47,827 results on '"Review Article"'
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2. Pathogenic roles of long noncoding RNAs in melanoma: Implications in diagnosis and therapies
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Yuchong Wang, Yuai Xiao, Yu Xia, and Chunyu Xue
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Melanoma ,Immune escape ,Review Article ,Cell Biology ,Drug resistance ,Biology ,medicine.disease_cause ,medicine.disease ,Biochemistry ,Phenotype ,Gene expression ,medicine ,Cancer research ,Epigenetics ,Signal transduction ,Carcinogenesis ,Molecular Biology ,Genetics (clinical) - Abstract
Melanoma is one of the most dangerous types of cutaneous neoplasms, which are pigment-producing cells of neuroectodermal origin found all over the body. A great deal of research is focused on the mechanisms of melanoma to promote better diagnostic and treatment options for melanoma in its advanced stages. The progression of melanoma involves alteration in different levels of gene expression. With the successful implementation of next-generation sequencing technology, an increasing number of long noncoding RNAs (lncRNAs) sequences have been discovered, and a significant number of them have phenotypic effects in both in vitro and in vivo studies, implying that they play an important role in the occurrence and progression of human cancers, particularly melanoma. A number of evidence indicated that lncRNAs are important regulators in tumor cell proliferation, invasion, apoptosis, immune escape, energy metabolism, drug resistance, epigenetic regulation. To better understand the role of lncRNAs in melanoma tumorigenesis, we categorize melanoma-associated lncRNAs according to their cellular functions and associations with gene expression and signaling pathways in this review. Based on the mechanisms of lncRNA, we discuss the possibility of lncRNA-target treatments, and the application of liquid biopsies to detect lncRNAs in melanoma diagnosis and prognosis.
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- 2023
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3. Use of Mesenchymal Stem Cells in Crohn's Disease and Perianal Fistulas: A Narrative Review
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Mohadeseh Khoshandam, Azar Sheikholeslami, Seyyed Jalal Eshaghhosseini, Mohsen Sheykhhasan, Hoda Fazaeli, and Naser Kalhor
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Anal fistula ,Oncology ,medicine.medical_specialty ,Crohn's disease ,business.industry ,Mesenchymal stem cell ,Medicine (miscellaneous) ,General Medicine ,Disease ,medicine.disease ,Inflammatory bowel disease ,Review article ,Cell therapy ,Internal medicine ,medicine ,Narrative review ,business - Abstract
Crohn's Disease (CD), which usually leads to anal fistulas among patients, is the most important inflammatory bowel disease that causes morbidity in many people around the world. This review article proposes using MSCs as a hopeful therapeutic strategy for CD and anal fistula treatment in both preclinical and clinical conditions. Finally, darvadstrocel, a cell-based medication to treat complex anal fistulas in adults, as the only European Medicines Agency (EMA)-approved product for the treatment of anal fistulas in CD is addressed. Although several common therapies, such as surgery and anti-tumor necrosis factor-alpha (TNF-α) drugs as well as a combination of these methods is used to improve this disease, however, due to the low effectiveness of these treatments, the use of new strategies with higher efficiency is still recommended. Cell therapy is among the new emerging therapeutic strategies that have attracted great attention from clinicians due to its unique capabilities. One of the most widely used cell sources administrated in cell therapy is mesenchymal stem cell (MSC). This review article will discuss preclinical and clinical studies about MSCs as a potent and promising therapeutic option in the treatment of CD and anal fistula.
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- 2023
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4. Inflammation and cancer: paradoxical roles in tumorigenesis and implications in immunotherapies
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Sunan Shen, Xinghan Liu, Lijie Yin, and Yayi Hou
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business.industry ,Cancer ,Inflammation ,Review Article ,Cell Biology ,medicine.disease_cause ,medicine.disease ,Biochemistry ,Virus ,Metastasis ,medicine ,Cancer research ,medicine.symptom ,Carcinogenesis ,business ,Cancer risk ,Molecular Biology ,Genetics (clinical) - Abstract
Chronic inflammation caused by persistent infections and metabolic disorders is thought to contribute to the increased cancer risk and the accelerated cancer progression. Oppositely, acute inflammation induced by bacteria-based vaccines or that is occurring after cancer selectively inhibits cancer progression and metastasis. However, the interaction between inflammation and cancer may be more complex than the current explanations for the relationship between chronic and acute inflammation and cancer. In this review, we described the impact of inflammation on cancer on the basis of three perspectives, including inflammation with different durations (chronic and acute inflammation), different scopes (systemic and local inflammation) and different occurrence sequences (inflammation occurring after and before cancer). In addition, we also introduced bacteria/virus-based cancer immunotherapies. We perceive that inflammation may be a double-edged sword with cancer-promoting and cancer-suppressing functions in certain cases. We expect to further improve the understanding of the relationship between inflammation and cancer and provide a theoretical basis for further research on their complex interaction.
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- 2023
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5. Insight into the role of multiple signaling pathways in regulating cancer stem cells of gynecologic cancers
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Shuya Pan, Z. Peter Wang, Xueqiong Zhu, Kehan Li, Xin Chen, and Yizuo Song
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0301 basic medicine ,Cancer Research ,Genital Neoplasms, Female ,business.industry ,medicine.medical_treatment ,Treatment outcome ,Wnt signaling pathway ,medicine.disease ,Targeted therapy ,Review article ,03 medical and health sciences ,030104 developmental biology ,0302 clinical medicine ,Cancer stem cell ,030220 oncology & carcinogenesis ,Neoplastic Stem Cells ,Cancer research ,Humans ,Medicine ,Female ,Signal transduction ,business ,Ovarian cancer ,Hedgehog ,Signal Transduction - Abstract
Mounting evidence has demonstrated that a myriad of developmental signaling pathways, such as the Wnt, Notch, Hedgehog and Hippo, are frequently deregulated and play a critical role in regulating cancer stem cell (CSC) activity in human cancers, including gynecologic malignancies. In this review article, we describe an overview of various signaling pathways in human cancers. We further discuss the developmental roles how these pathways regulate CSCs from experimental evidences in gynecologic cancers. Moreover, we mention several compounds targeting CSCs in gynecologic cancers to enhance the treatment outcomes. Therefore, these signaling pathways might be the potential targets for developing targeted therapy in gynecologic cancers.
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- 2022
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6. The Role of Perinatal Palliative Care in Fetal Neurology
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Sarah Ellestad, Monica E. Lemmon, Sharla Rent, and Margarita Bidegain
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medicine.medical_specialty ,Pregnancy ,Fetus ,Neurology ,Palliative care ,Fetal surgery ,business.industry ,medicine.medical_treatment ,MEDLINE ,Obstetrics and Gynecology ,medicine.disease ,Article ,Review article ,Palliative care.team ,Pediatrics, Perinatology and Child Health ,medicine ,Intensive care medicine ,business - Abstract
OBJECTIVES Many serious or life-threatening neurologic conditions are first diagnosed during the fetal period, often following a routine ultrasound or sonographic evaluation after an abnormal aneuploidy screen. Such conditions represent a worrisome or unexpected finding for expectant parents, making the perinatal period a critical time point to engage and empower families encountering complex neurologic clinical scenarios. This review covers the role of perinatal palliative care in these settings. STUDY DESIGN Topical review RESULTS:: The prenatal identification of structural abnormalities of the brain or spinal cord, radiographic signs of hemorrhage or ischemic injury, or evidence of genetic or metabolic conditions should prompt involvement of a fetal palliative care team. The inherent prognostic uncertainty is challenging for prenatally diagnosed neurologic conditions which have difficult to predict short and long-term outcomes. While many of these conditions lead to the birth of an infant with neurodevelopmental challenges, few result in in utero demise. Palliative care beginning in the perinatal period provides an additional layer of support for families navigating complex decision-making during their pregnancy and provides continuity of care into the newborn period. Palliative care principles can help guide discussions around genetic and other diagnostic testing, fetal surgery, and birth planning. A multidisciplinary team can help support families with decision-making and through bereavement care in the setting of fetal or neonatal death. CONCLUSION Early palliative care team involvement can provide a more holistic approach to counseling, facilitate planning, and ensure that a family's goals and wishes are acknowledged throughout an infant's care trajectory. KEY POINTS · Many serious or life-threatening neurologic conditions are diagnosed during the fetal period.. · Palliative care principles should be incorporated in the fetal period for affected patients.. · Palliative care clinicians can aid parents and clinicians in shared decision-making.. · Palliative care principles should be employed by all care providers in relevant cases..
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- 2023
7. The impact of warfarin on overall survival in cancer patients
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Thita Chiasakul and Jeffrey I. Zwicker
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Oncology ,medicine.medical_specialty ,Population ,Article ,Internal medicine ,Neoplasms ,medicine ,Humans ,cardiovascular diseases ,education ,education.field_of_study ,business.industry ,Incidence (epidemiology) ,Warfarin ,Cancer ,Anticoagulants ,Hematology ,Heparin ,Venous Thromboembolism ,Heparin, Low-Molecular-Weight ,medicine.disease ,Review article ,Clinical trial ,business ,Complication ,medicine.drug - Abstract
Venous thromboembolism (VTE) is a common complication in patients with cancer. Warfarin has largely been replaced by low-molecular-weight heparin (LMWHs) and direct oral anticoagulants (DOACs) as the standard of care in cancer-associated VTE. The survival benefit of these anticoagulants over warfarin in the cancer population was not demonstrated in clinical trials, possibly due to insufficient sample size and limited follow-up duration. There are emerging population-based studies suggesting that warfarin may be associated with improved overall survival in cancers and may have a protective effect against certain types of cancers. Warfarin may exert its anti-neoplastic properties through both coagulation pathway -dependent and -independent mechanisms, the latter of which are mediated by inhibition of the Gas6-AXL signaling pathway. Further research should emphasize on identifying clinical and laboratory predictors of beneficial effects of warfarin. In this review article, we summarize and update the current evidence regarding the potential impact of warfarin on the overall survival of cancer patients and incidence of cancer, as well as review the potential mechanism of such effect and future perspectives.
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- 2023
8. Therapeutic Approaches for the Management of Autoimmune Disorders via Gene Therapy: Prospects, Challenges and Opportunities
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Piyush Madaan, Habibur Rahman, G Adilakshmi, Parteek Chandel, Rokeya Akter, and Rakesh K. Sindhu
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business.industry ,Genetic enhancement ,Genetic Therapy ,Disease ,Inflammatory Bowel Diseases ,medicine.disease ,Inflammatory bowel disease ,Myasthenia gravis ,Autoimmune Diseases ,Review article ,Arthritis, Rheumatoid ,Diabetes Mellitus, Type 1 ,Immune system ,Diabetes mellitus ,Rheumatoid arthritis ,Drug Discovery ,Immunology ,Genetics ,medicine ,Animals ,Molecular Medicine ,business ,Molecular Biology ,Genetics (clinical) - Abstract
Background: Autoimmune diseases are the diseases that result due to the overactive immune response, and comprehend systemic autoimmune diseases like Rheumatoid Arthritis (RA), Sjӧgren’s Syndrome (SS), and organ-specific autoimmune diseases like type-1 diabetes mellitus (T1DM), Myasthenia Gravis (MG), and Inflammatory Bowel Disease (IBD). Currently, there is no long-term cure; but, several treatments exist which retard the evolution of the disease, embracing gene therapy, which has been scrutinized to hold immense aptitude for the management of autoimmune diseases. Objective: The review highlights the pathogenic mechanisms and genes liable for the development of autoimmune diseases, namely T1DM, type-2 diabetes mellitus (T2DM), RA, SS, IBD, and MG. Furthermore, the review focuses on investigating the outcomes of delivering the corrective genes with their specific viral vectors in various animal models experiencing these diseases to determine the effectiveness of gene therapy. Methods: Numerous review and research articles emphasizing the tremendous potential of gene therapy in the management of autoimmune diseases were procured from PubMed, MEDLINE, Frontier, and other databases and thoroughly studied for writing this review article. Results: The various animal models that experienced treatment with gene therapy have displayed regulation in the levels of proinflammatory cytokines, infiltration of lymphocytes, manifestations associated with autoimmune diseases, and maintained equilibrium in the immune response, thereby compete with the progression of autoimmune diseases. Conclusion: Gene therapy has revealed prodigious aptitude in the management of autoimmune diseases in various animal studies, but further investigation is essential to combat the limitations associated with it and before employing it on humans.
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- 2022
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9. Brain Tumor Detection Using Machine Learning and Deep Learning: A Review
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Aditya Gupta, Venkatesh S Lotlikar, and Nitin Satpute
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Computer science ,Brain tumor ,Computed tomography ,Machine learning ,computer.software_genre ,Convolutional neural network ,Machine Learning ,Deep Learning ,convolutional neural networks ,medicine ,Humans ,magnetic resonance imaging ,Preprocessor ,Radiology, Nuclear Medicine and imaging ,preprocessing ,medicine.diagnostic_test ,Brain Neoplasms ,business.industry ,Deep learning ,Brain ,deep learning ,medicine.disease ,Review article ,Tumor detection ,machine learning ,Neural Networks, Computer ,Artificial intelligence ,business ,computer ,International agency - Abstract
According to the International Agency for Research on Cancer (IARC), the mortality rate due to brain tumors is 76%. It is required to detect the brain tumors as early as possible and to provide the patient with the required treatment to avoid any fatal situation. With the recent advancement in technology, it is possible to automatically detect the tumor from images such as Magnetic Resonance Iimaging (MRI) and computed tomography scans using a computer-aided design. Machine learning and deep learning techniques have gained significance among researchers in medical fields, especially Convolutional Neural Networks (CNN), due to their ability to analyze large amounts of complex image data and perform classification. The objective of this review article is to present an exhaustive study of techniques such as preprocessing, machine learning, and deep learning that have been adopted in the last 15 years and based on it to present a detailed comparative analysis. The challenges encountered by researchers in the past for tumor detection have been discussed along with the future scopes that can be taken by the researchers as the future work. Clinical challenges that are encountered have also been discussed, which are missing in existing review articles.
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- 2022
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10. Innovations in otorhinolaryngology in the age of COVID‐19: A systematic literature review
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Jason A. Brant, Liuba Soldatova, Jason G. Newman, and E. Berryhill McCarty
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medicine.medical_specialty ,Psychological intervention ,MEDLINE ,Scopus ,Review Article ,Otolaryngology ,03 medical and health sciences ,0302 clinical medicine ,Inventions ,Health care ,Pandemic ,medicine ,Innovations ,030223 otorhinolaryngology ,Personal protective equipment ,Literature review ,business.industry ,COVID-19 ,medicine.disease ,Systematic review ,Otorhinolaryngology ,030220 oncology & carcinogenesis ,Surgery ,Medical emergency ,business - Abstract
Objective Otolaryngologists are at increased occupational risk of Coronavirus Disease 2019 (COVID-19) infection due to exposure from respiratory droplets and aerosols generated during otologic, nasal, and oropharyngeal examinations and procedures. There have been a variety of guidelines and precautions developed to help mitigate this risk. While many reviews have focused on the personal protective equipment (PPE) and preparation guidelines for surgery in the COVID-19 era, none have focused on the more creative and unusual solutions designed to limit viral transmission. This review aims to fill that need. Data sources PubMed, Ovid/Medline, and Scopus. Methods A comprehensive review of literature was performed on September 28, 2020 using PubMed, Ovid/Medline, and Scopus databases. All English-language studies were included if they proposed or assessed novel interventions developed for Otolaryngology practice during the COVID-19 pandemic. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines were followed. Results A total of 41 papers met inclusion criteria and were organized into 5 categories (‘General Recommendations for Otolaryngologic Surgery’, ‘Equipment Shortage Solutions’, ‘Airway Procedures’, ‘Nasal Endoscopy and Skull Base Procedures’, and ‘Otologic Procedures’). Articles were summarized, highlighting the innovations created and evaluated during the COVID-19 pandemic. Creative solutions such as application of topical viricidal agents, make-shift mask filters, three-dimensional (3-D) printable adapters for headlights, aerosol containing separation boxes, and a variety of new draping techniques have been developed to limit the risk of COVID-19 transmission. Conclusions Persistent risk of COVID-19 exposure remains high. Thus, there is an increased need for solutions that mitigate the risk of viral transmission during office procedures and surgeries, especially given that most COVID-19 positive patients present asymptomatically. This review examines and organizes creative solutions that have been proposed and utilized in the otolaryngology. These solutions have a potential to minimize the risk of viral transmission in the current clinical environment and to create safer outpatient and operating room conditions for patients and healthcare staff.
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- 2022
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11. 2020 Clinical Update in Liver Transplantation
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Brittany A. Brown, Nicholas W. Markin, Cale A. Kassel, Bradley A. Fremming, and Trevor J. Wilke
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medicine.medical_specialty ,Surgical stress ,Waiting Lists ,medicine.medical_treatment ,Review Article ,030204 cardiovascular system & hematology ,Liver transplantation ,End Stage Liver Disease ,03 medical and health sciences ,Liver disease ,0302 clinical medicine ,030202 anesthesiology ,Diabetes mellitus ,medicine ,Coagulopathy ,Humans ,Intensive care medicine ,business.industry ,Graft Survival ,COVID-19 ,Immunosuppression ,Perioperative ,medicine.disease ,Liver Transplantation ,Anesthesiology and Pain Medicine ,Respiratory virus ,Cardiology and Cardiovascular Medicine ,business - Abstract
The gold standard treatment of end-stage liver disease continues to be liver transplantation (LT). The challenges of LT require skilled anesthesiologists to anticipate physiologic changes associated with end-stage liver disease and surgical considerations that affect multiple organ systems. While on the waiting list, patients may be placed on new anticoagulation medications that can confound already complex coagulopathy in LT patients. Pain management often is an afterthought for such a complex procedure, but appropriate medications can help control pain while limiting opioid medications. Surgical stress and medications for immunosuppression can affect perioperative glucose management in ways that have implications for patient and graft survival. The coronavirus disease 2019 pandemic in 2020 provided a new challenge for anesthesiologists. The uncertainty of the novel respiratory virus challenged providers beyond just LT patients.
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- 2022
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12. Peripheral Arteriovenous Malformations: Imaging and Endovascular Management Strategies
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Uday Bhanu Kovilapu, Jawahar Rathod, Harshith Kramadhari, Yadav W. Munde, and Virender Malik
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medicine.medical_specialty ,business.industry ,Fistula ,medicine.medical_treatment ,Vascular malformation ,R895-920 ,Arteriovenous malformation ,peripheral arteriovenous malformations ,medicine.disease ,endovascular management strategies ,030218 nuclear medicine & medical imaging ,Peripheral ,Vascular anomaly ,Review article ,03 medical and health sciences ,Medical physics. Medical radiology. Nuclear medicine ,0302 clinical medicine ,Heart failure ,medicine ,Radiology, Nuclear Medicine and imaging ,Radiology ,Embolization ,business ,030217 neurology & neurosurgery - Abstract
The peripheral high-flow vascular malformation (HFVM) comprises arteriovenous malformation (AVM) and fistula (AVF), shows varied clinical presentation (ranging from subtle skin lesion to life-threatening congestive heart failure), and frequently poses diagnostic and therapeutic challenges. Importance of assigning a specific diagnosis to the vascular malformation cannot be overstated, as the treatment strategy is based on the type of vascular anomaly. Although the International Society for the Study of Vascular Anomalies (ISSVA) classification system is the most commonly accepted system for classifying congenital vascular anomalies in clinical practice, the Cho–Do et al classification is of utmost help in guiding optimal mode of treatment in peripheral AVM. Although transarterial approach remains the most commonly employed route for peripheral AVM embolization, the role of transvenous and direct percutaneous approach is ever increasing and the final decision on the approach depends on angioarchitecture of the AVM. In this article, we review various commonly employed classification systems for congenital vascular anomalies, and describe clinical features, imaging and treatment strategies for peripheral arteriovenous malformation (PAVM).
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- 2022
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13. Robotic-assisted percutaneous coronary intervention in the COVID-19 pandemic
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Takuya Nakamura, Yoshihiro Fukumoto, Kazunori Yamaji, Masaharu Nakano, and Yoshiaki Mitsutake
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Acute coronary syndrome ,medicine.medical_specialty ,Coronavirus disease 2019 (COVID-19) ,medicine.medical_treatment ,Review Article ,Coronary Artery Disease ,Coronary Angiography ,Sitting ,Percutaneous Coronary Intervention ,Robotic Surgical Procedures ,Internal medicine ,Health care ,Pandemic ,medicine ,Humans ,Pandemics ,SARS-CoV-2 ,business.industry ,Cardiogenic shock ,COVID-19 ,Percutaneous coronary intervention ,medicine.disease ,Treatment Outcome ,Conventional PCI ,Cardiology ,Medical emergency ,Cardiology and Cardiovascular Medicine ,business ,Robotic-assisted procedures - Abstract
Coronavirus disease-2019 (COVID-19) has a profound impact on the health care system worldwide. In the COVID-19 pandemic, hospitals are required to halt elective surgeries and procedures for preventing nosocomial infections and saving medical resources. In these situations, emergency procedures are required for life-threatening cardiovascular diseases such as acute coronary syndrome and cardiogenic shock. To prevent the spread of COVID-19, a social distance is essentially required. In ordinary percutaneous coronary intervention (PCI), operators manipulate the devices standing at the patient's tableside during the whole procedure, which may involve a certain risk of exposure to patients with COVID-19. A robotic-assisted PCI (R-PCI) allows operators to manipulate devices remotely, sitting at a cockpit located several meters away from the patient, and in addition, the assistant can be at the foot of the bed, much further from the access site. R-PCI can help to minimize the radiation exposure and the amount of person-to-person contact, and consequently may reduce the risk for the exposure to the virus., Graphical abstract Image, graphical abstract
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- 2022
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14. Update on pediatric testicular germ cell tumors
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Elisabeth T. Tracy, David A. Rodeberg, Jennifer H. Aldrink, Erin G. Brown, Peter F. Ehrlich, Timothy B. Lautz, Reto M. Baertschiger, Richard D. Glick, Peter Mattei, Afif N. Kulaylat, David H. Rothstein, Christa N. Grant, Roshni Dasgupta, and Emily R. Christison-Lagay
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Male ,endocrine system ,Pediatrics ,medicine.medical_specialty ,Adolescent ,medicine.medical_treatment ,03 medical and health sciences ,Retroperitoneal lymph node dissection ,0302 clinical medicine ,Testicular Neoplasms ,030225 pediatrics ,medicine ,Humans ,Prospective Studies ,Orchiectomy ,Child ,Neoplasm Staging ,business.industry ,Cancer ,Pediatric Surgeon ,General Medicine ,Evidence-based medicine ,Neoplasms, Germ Cell and Embryonal ,medicine.disease ,Testicular germ cell ,Review article ,Clinical trial ,030220 oncology & carcinogenesis ,Pediatrics, Perinatology and Child Health ,Lymph Node Excision ,Surgery ,business - Abstract
Background Testicular germ cell tumors are uncommon tumors that are encountered by pediatric surgeons and urologists and require a knowledge of appropriate contemporary evaluation and surgical and medical management. Method A review of the recommended diagnostic evaluation and current surgical and medical management of children and adolescents with testicular germ cell tumors based upon recently completed clinical trials was performed and summarized in this article. Results In this summary of childhood and adolescent testicular germ cell tumors, we review the initial clinical evaluation, surgical and medical management, risk stratification, results from recent prospective cooperative group studies, and clinical outcomes. A summary of recently completed clinical trials by pediatric oncology cooperative groups is provided, and best surgical practices are discussed. Conclusions Testicular germ cell tumors in children are rare tumors. International collaborations, data-sharing, and enrollment of patients at all stages and risk classifications into active clinical trials will enhance our knowledge of these rare tumors and most importantly improve outcomes of patients with testicular germ cell tumors. Level of evidence This is a review article of previously published and referenced level 1 and 2 studies, but also includes expert opinion level 5, represented by the American Pediatric Surgical Association Cancer Committee.
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- 2022
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15. Clinical guidance on endoscopic management of colonic polyps in Singapore
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Vikneswaran Namasivayam, James Weiquan Li, Chern Hao Chong, Christopher Khor, Tiing Leong Ang, Jit Fong Lim, Khay Guan Yeoh, Tju Siang Chua, Kok Ann Gwee, Kok Yang Tan, Lai Mun Wang, and Charles Vu
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Adenoma ,Curative resection ,Singapore ,medicine.medical_specialty ,medicine.diagnostic_test ,Colorectal cancer ,business.industry ,General surgery ,Perforation (oil well) ,Colonic Polyps ,Colonoscopy ,Review Article ,General Medicine ,Endoscopic management ,medicine.disease ,United States ,Endoscopic polypectomy ,Colonic Neoplasms ,medicine ,Humans ,Endoscopic resection ,Surveillance colonoscopy ,Colorectal Neoplasms ,business - Abstract
Colonoscopy with endoscopic resection of detected colonic adenomas interrupts the adenoma-carcinoma sequence and reduces the incidence of colorectal cancer and cancer-related mortality. In the past decade, there have been significant developments in instruments and techniques for endoscopic polypectomy. Guidelines have been formulated by various professional bodies in Europe, Japan and the United States, but some of the recommendations differ between the various bodies. An expert professional workgroup under the auspices of the Academy of Medicine, Singapore, was set up to provide guidance on the endoscopic management of colonic polyps in Singapore. A total of 23 recommendations addressed the following issues: accurate description and diagnostic evaluation of detected polyps; techniques to reduce the risk of post-polypectomy bleeding and delayed perforation; the role of specific endoscopic resection techniques; the histopathological criteria for defining endoscopic cure; and the role of surveillance colonoscopy following curative resection.
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- 2022
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16. Post COVID fatigue: Can we really ignore it?
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Sumit Bharti, Isha Garg, and Priya Sharma
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2019-20 coronavirus outbreak ,medicine.medical_specialty ,Tuberculosis ,Coronavirus disease 2019 (COVID-19) ,Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) ,media_common.quotation_subject ,Review Article ,Pathogenesis ,03 medical and health sciences ,Presentation ,Post-Acute COVID-19 Syndrome ,medicine ,Chronic fatigue syndrome ,Humans ,Intensive care medicine ,Fatigue ,media_common ,0303 health sciences ,Fatigue Syndrome, Chronic ,SARS-CoV-2 ,030306 microbiology ,business.industry ,COVID-19 ,medicine.disease ,Infectious Diseases ,business - Abstract
Long-COVID, also referred to as post-acute COVID-19, chronic COVID-19, post-COVID syndrome, or post-acute sequelae of SARS-CoV-2 infection (PASC), generally refers to symptoms that develop during or after acute COVID-19 illness, continue for ≥12 weeks, and are not explained by an alternative diagnosis. It is not yet known whether “long-COVID” represents a new syndrome unique to COVID-19 or overlaps with recovery from similar illnesses. It's difficult for physicians to predict when symptoms will improve as it varies differently in different people. Patient's recovery depends on various factors including age, associated comorbidities, severity of COVID-19 infection. Some symptoms, like fatigue, might continue even while others improve or go away. This review addresses the pathogenesis, presentation of post covid fatigue, its severity and its management.
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- 2022
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17. The association of elevated body mass index (BMI) with complications and outcomes following anatomic total shoulder arthroplasty: a systematic review
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Konrad I. Gruson, Jeremy Loloi, Yuchen Dong, Vanessa Charubhumi, Shady Mahmoud, and Eloy Tabeayo
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medicine.medical_specialty ,business.industry ,medicine.medical_treatment ,Level iv ,Evidence-based medicine ,Perioperative ,medicine.disease ,Obesity ,Arthroplasty ,Review article ,Internal medicine ,Medicine ,Orthopedics and Sports Medicine ,Surgery ,Range of motion ,business ,Elevated body mass index - Abstract
Purpose Obesity has been associated with increased perioperative complications following shoulder arthroplasty, though this finding has not been consistently reported. The purpose of this systematic review is to summarize the correlation between elevated body mass index (BMI) and the prevalence of perioperative complications and clinical outcomes following anatomic total shoulder arthroplasty (aTSA). Methods An extensive literature search of PubMed, Embase, ScienceDirect, and Google Scholar was conducted up until October 2020. Clinical studies that specifically examined the association between BMI and/or various categories of obesity with perioperative complications and functional outcomes following aTSA were included. Public databases (NIS, ACS-NSQIP, PearlDiver, and statewide databases) were largely excluded from the analysis unless procedural codes allowed for differentiation between reverse total shoulder arthroplasty (rTSA) and aTSA. Results Eleven studies were included in this systematic review - 9 studies reported solely on perioperative complications, 1 study solely on functional outcomes, and 1 study on both complications and outcomes following aTSA. Seven papers had a MINORS (Methodological Index for Non-Randomized Studies) score of Discussion Increasing BMI was not found to be associated with an elevated risk for the majority of perioperative complications following aTSA. Range of motion and patient reported functional outcomes can be expected to improve, even amongst morbidly obese patients. Level of Evidence Level IV; Review Article
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- 2022
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18. COVID-lateral damage: cardiovascular manifestations of SARS-CoV-2 infection
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Sadeer G. Al-Kindi and David A. Zidar
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cardiac injury ,medicine.medical_specialty ,Myocarditis ,Psychological intervention ,Translational research ,Context (language use) ,Review Article ,Disease ,Physiology (medical) ,Pandemic ,SARS-COV2 ,Global health ,medicine ,Humans ,Intensive care medicine ,SARS-CoV-2 ,business.industry ,Biochemistry (medical) ,Public Health, Environmental and Occupational Health ,COVID-19 ,General Medicine ,medicine.disease ,Magnetic Resonance Imaging ,inflammation ,Cardiovascular Injury ,business - Abstract
Early in the pandemic, concern that cardiovascular effects would accompany COVID-19 was fueled by lessons from the first SARS epidemic, knowledge that the SARS-COV2 entry receptor (Angiotensin-converting enzyme 2, ACE2) is highly expressed in the heart, early reports of myocarditis, and first-hand accounts by physicians caring for those with severe COVID-19. Over 18 months, our understanding of the cardiovascular manifestations has expanded greatly, leaving more new questions than those conclusively answered. Cardiac involvement is common (∼ 20%) but not uniformly observed in those who require treatment in a hospitalized setting. Cardiac MRI studies raise the possibility of manifestations in those with minimal symptoms. Some appear to experience protracted cardiovascular symptoms as part of a larger syndrome of post-acute sequelae of COVID-19 (PASC). Instances of vaccine induced thrombosis and myocarditis are exceedingly rare but illustrate the need to monitor the cardiovascular safety of interventions that induce inflammation. Here, we will summarize the current understanding of potential cardiovascular manifestations of SARS-COV2. To provide proper context, paradigms of cardiovascular injury due to other inflammatory processes will also be discussed. Ongoing research and a deeper understanding COVID-19 may ultimately reveal new insight into the mechanistic underpinnings of cardiovascular disease. Thus, in this time of unprecedented suffering and risk to global health, there exists the opportunity that well conducted translational research of SARS-COV2 may provide health dividends that outlast the current pandemic.
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- 2022
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19. Hepatic Regeneration in Cirrhosis
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Anupam Kumar, Rakesh Kumar Jagdish, and Ankur Kumar Jindal
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Cirrhosis ,Hepatology ,business.industry ,medicine.medical_treatment ,Regeneration (biology) ,Immunosuppression ,Review Article ,Liver transplantation ,Bioinformatics ,medicine.disease ,Transplantation ,Liver disease ,medicine ,Progenitor cell ,Stem cell ,business - Abstract
End-stage liver disease is characterized by massive hepatocyte death resulting in clinical decompensation and organ failures. Clinical consequences in cirrhosis are the results of the loss of functional hepatocytes and excessive scarring. The only curative therapy in advanced cirrhosis is orthotropic liver transplantation, but the clinical demand outweighs the availability of acceptable donor organs. Moreover, this also necessitates lifelong immunosuppression and carries associated risks. The liver has a huge capability for regeneration. Self-replication of quiescent differentiated hepatocytes and cholangiocytes occurs in patients with acute liver injury. Due to limited hepatocyte self-renewal capacity in advanced cirrhosis, great interest has therefore been shown in characterizing the possible role of hepatic progenitor cells and bone marrow-derived stem cells to therapeutically aid this process. Transplantation of cells from various sources that can be properly differentiated into functional liver cells or use of growth factors for ex-vivo expansion of progenitor cells is needed at utmost priority. Multiple researches over the last two decades have aided researchers in refining proliferation, differentiation, and storage techniques and understand the functionality of these cells for use in clinical practice. However, these cell-based therapies are still experimental and have to be used in trial settings.
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- 2022
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20. The use of deep learning technology for the detection of optic neuropathy
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Mei Li and Chao Wan
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Optic neuropathy ,business.industry ,Deep learning ,medicine ,Optometry ,Radiology, Nuclear Medicine and imaging ,Review Article ,Artificial intelligence ,medicine.disease ,business - Abstract
The emergence of computer graphics processing units (GPUs), improvements in mathematical models, and the availability of big data, has allowed artificial intelligence (AI) to use machine learning and deep learning (DL) technology to achieve robust performance in various fields of medicine. The DL system provides improved capabilities, especially in image recognition and image processing. Recent progress in the sorting of AI data sets has stimulated great interest in the development of DL algorithms. Compared with subjective evaluation and other traditional methods, DL algorithms can identify diseases faster and more accurately in diagnostic tests. Medical imaging is of great significance in the clinical diagnosis and individualized treatment of ophthalmic diseases. Based on the morphological data sets of millions of data points, various image-related diagnostic techniques can now impart high-resolution information on anatomical and functional changes, thereby providing unprecedented insights in ophthalmic clinical practice. As ophthalmology relies heavily on imaging examinations, it is one of the first medical fields to apply DL algorithms in clinical practice. Such algorithms can assist in the analysis of large amounts of data acquired from the examination of auxiliary images. In recent years, rapid advancements in imaging technology have facilitated the application of DL in the automatic identification and classification of pathologies that are characteristic of ophthalmic diseases, thereby providing high quality diagnostic information. This paper reviews the origins, development, and application of DL technology. The technical and clinical problems associated with building DL systems to meet clinical needs and the potential challenges of clinical application are discussed, especially in relation to the field of optic nerve diseases.
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- 2022
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21. Human mucosal tissue-resident memory T cells in health and disease
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Marcus Buggert, Olga Rivera-Ballesteros, and Joshua Lange
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education.field_of_study ,Gastrointestinal tract ,Mucous Membrane ,Effector ,Immunology ,Population ,Cancer ,Review Article ,Disease ,Biology ,medicine.disease ,Memory T Cells ,Immune system ,Neoplasms ,medicine ,Humans ,Immunology and Allergy ,Female ,education ,Head and neck ,Immunologic Memory ,Immunologic Surveillance ,Mucosal tissue - Abstract
Memory T cells are fundamental to maintain immune surveillance of the human body. During the past decade, it has become apparent that non-recirculating resident memory T cells (TRMs) form a first line memory response in tissues to tackle re-infections. The fact that TRMs are essential for local immunity highlights the therapeutic potential of targeting this population against tumors and infections. However, similar to other immune subsets, TRMs are heterogenous and may form distinct effector populations with unique functions at diverse tissue sites. Further insight into the mechanisms of how TRM function and respond to pathogens and malignancies at different mucosal sites will help to shape future vaccine and immunotherapeutic approaches. Here, we review the current understanding of TRM function and biology at four major mucosal sites: gastrointestinal tract, lung, head and neck, as well as female reproductive tract. We also summarize our current knowledge of how TRM targets invading pathogens and developing tumor cells at these mucosal sites and contemplate how TRMs may be exploited to protect from infections and cancer.
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- 2022
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22. Liver Biopsy in Patients With Alcohol-Associated Liver Disease With Acute-on-Chronic Liver Failure
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Loretta Jophlin and Ashwani K. Singal
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medicine.medical_specialty ,Hepatology ,medicine.diagnostic_test ,business.industry ,Liver failure ,Alcoholic hepatitis ,Review Article ,medicine.disease ,Gastroenterology ,Liver disease ,Internal medicine ,Liver biopsy ,medicine ,In patient ,Acute on chronic liver failure ,business - Abstract
Patients with alcohol-associated liver disease may develop severe forms of presentation of acute-on-chronic liver failure, with a high risk for short-term mortality. Alcoholic hepatitis should be suspected among patients with alcohol-associated liver disease who present with acute-on-chronic liver failure. In this review, we discuss the need and feasibility of liver biopsy in the diagnosis of alcoholic hepatitis and predicting its prognosis among decompensated patients with alcohol-associated liver disease and acute-on-chronic liver failure.
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- 2022
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23. Use of non-conventional biomarkers in the early diagnosis of acute kidney injury in preterm newborns with sepsis
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Joycilene da Silva Barbosa, Geraldo Bezerra da Silva Júnior, Gdayllon Cavalcante Meneses, Alice Maria Costa Martins, Elizabeth De Francesco Daher, Rosângela Pinheiro Gonçalves Machado, and Romélia Pinheiro Gonçalves Lemes
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medicine.medical_specialty ,medicine.medical_treatment ,Disease ,urologic and male genital diseases ,Sepsis ,Renal Dialysis ,Risk Factors ,Intensive care ,medicine ,Humans ,Intensive care medicine ,Dialysis ,urogenital system ,business.industry ,Mortality rate ,Infant, Newborn ,Acute kidney injury ,General Medicine ,Acute Kidney Injury ,medicine.disease ,Diseases of the genitourinary system. Urology ,female genital diseases and pregnancy complications ,Review article ,Intensive Care Units ,Early Diagnosis ,RC870-923 ,business ,Infant, Premature ,Biomarkers ,Kidney disease - Abstract
Acute kidney injury (AKI) is a common finding in Neotatal Intensive Care Units (NICU). Sepsis is one the main causes of AKI in preterm newborns. AKI has been associated with significant death rates. Early detection of the condition is the first step to improving prevention, treatment, and outcomes, while decreasing length of hospitalization, care costs, and morbimortality. AKI may progress to chronic kidney disease (CKD), a condition linked with dialysis and greater risk of cardiovascular disease. This review article aims to discuss cases of AKI in preterm newborns with sepsis, the use of biomarkers in lab workup, and the use of non-conventional biomarkers for the early identification of AKI.
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- 2022
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24. Implication of Covid-19 on Neurological Complications with Specific Emphasis on Alzheimer’s and Parkinson’s Disease
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Balraj Saini, Ravi Goyal, Harshdeep Singh, Rajwinder Kaur, Sandeep Arora, Ankita Sood, and Tapan Behl
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Pharmacology ,medicine.medical_specialty ,Parkinson's disease ,SARS-CoV-2 ,business.industry ,General Neuroscience ,Vulnerability ,COVID-19 ,Disease Management ,Parkinson Disease ,Disease ,medicine.disease ,Review article ,Alzheimer Disease ,Pandemic ,Health care ,Epidemiology ,medicine ,Humans ,Disease management (health) ,Intensive care medicine ,business - Abstract
It is noticeable how the novel coronavirus has spread from the Wuhan region of China to the whole world, devastating the lives of people worldwide. All the data related to the precautionary measures, diagnosis, treatment, and even the epidemiological data are being made freely accessible and reachable in a very little time as well as being rapidly published to save humankind from this pandemic. There might be neurological complications of COVID-19 and patients suffering from neurodegenerative conditions like Alzheimer’s disease and Parkinson’s disease might have repercussions as a result of the pandemic. In this review article, we have discussed the effect of SARS-CoV-2 viral infection on the people affected with neurodegenerative disorders such as Parkinson’s and Alzheimer’s. It primarily emphasizes two issues, i.e., vulnerability to infection and modifications of course of the disease concerning the clinical neurological manifestations, the advancement of the disease and novel approaches to support health care professionals in disease management, the susceptibility to these diseases, and impact on the severity of disease and management.
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- 2022
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25. Clinical Implications, Evaluation, and Management of Hyponatremia in Cirrhosis
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Dibya L Praharaj and Anil C. Anand
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medicine.medical_specialty ,Cirrhosis ,Hepatology ,business.industry ,medicine.medical_treatment ,nutritional and metabolic diseases ,Review Article ,Liver transplantation ,medicine.disease ,Gastroenterology ,Hypertonic saline ,Lethargy ,Spontaneous bacterial peritonitis ,Internal medicine ,Ascites ,medicine ,medicine.symptom ,business ,Hyponatremia ,Hepatic encephalopathy - Abstract
Hyponatremia is the most common electrolyte abnormality in patients with decompensated cirrhosis on Liver Transplantation (LT) waiting list. Most of these patients have dilutional or hypervolemic hyponatremia secondary to splanchnic vasodilatation. Excessive secretion of the antidiuretic hormone also plays an important role. Hypervolemic hyponatremia is commonly associated with refractory ascites, spontaneous bacterial peritonitis, and hepatic encephalopathy. Although uncommon, the use of diuretics and laxatives can cause hypovolemic hyponatremia that is characterized by the striking absence of ascites or pedal edema. Clinical features are often nonspecific and depend on the acuity of onset rather than the absolute value of serum sodium. Symptoms may be subtle, including nausea, lethargy, weakness, or anorexia. However, rarely patients may present with confusion, seizures, psychosis, or coma. Treatment includes discontinuation of diuretics, beta-blockers, and albumin infusion. Hypertonic saline (3%) infusion may be used in patients with very low serum sodium (
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- 2022
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26. Biologics recommendations for patients with psoriasis: a critical appraisal of clinical practice guidelines for psoriasis
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Sha Yao, Hao Luo, Lui Li, Xiuli Xie, Yun Xia, Yangyang Wang, and Chuanjian Lu
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Adult ,medicine.medical_specialty ,media_common.quotation_subject ,Dermatology ,Biological Factors ,030207 dermatology & venereal diseases ,03 medical and health sciences ,0302 clinical medicine ,Consistency (negotiation) ,Psoriasis ,medicine ,Humans ,Agree ii ,Quality (business) ,Child ,Intensive care medicine ,media_common ,030203 arthritis & rheumatology ,Biological Products ,business.industry ,Adalimumab ,medicine.disease ,Review article ,Biologic Agents ,Clinical Practice ,Critical appraisal ,Ustekinumab ,business - Abstract
This review article serves to assess the consistency of recommendations from guidelines on biologic agents for psoriasis, based on the quality evaluation of psoriasis Clinical Practice Guidelines (CPGs).We conducted a systematic literature search to identify CPGs that provide recommendations on diagnosis and treatment for psoriasis. Four reviewers performed a quality assessment of the included CPGs with the Appraisal of Guidelines Research and Evaluation II (AGREE II) Instrument.A total of 51 sets of CPGs from 22 medical societies or separate working groups fulfilled the inclusion criteria. The overall quality of the eligible sets of guidelines was moderate to high, with an overall average score of 55%. The highest domain scores were Score and Purpose (70%) and Clarity of Presentation (68%). A total of 95 biologic agent recommendations were extracted from the 18 recommended CPGs. Three biologic agents (Etanercept, Adalimumab, Ustekinumab) were recommended for pediatric patients. Three biologic agents (Adalimumab, Ustekinumab, Secukinumab) were recommended as first-line biologic agents for adults with psoriasis.The overall methodological quality of CPGs for psoriasis is medium to high. More attention should be paid to applicability in guideline development. The recommendations and the basis for them among various sets guidelines were almost consistent.
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- 2022
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27. Immune interventions in COVID-19: a matter of time?
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Xavier Mariette, Q. Richier, Olivier Hermine, Nicolas Noel, Léo Plaçais, Karine Lacombe, Service de Médecine Interne - Immunologie Clinique [AP-HP Bicêtre], AP-HP Hôpital Bicêtre (Le Kremlin-Bicêtre), Immunologie des Maladies Virales et Autoimmunes (IMVA - U1184), Université Paris-Sud - Paris 11 (UP11)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de la Santé et de la Recherche Médicale (INSERM), CHU Saint-Antoine [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Institut Pierre Louis d'Epidémiologie et de Santé Publique (iPLESP), Institut National de la Santé et de la Recherche Médicale (INSERM)-Sorbonne Université (SU), Hôpital Bicêtre, Imagine - Institut des maladies génétiques (IHU) (Imagine - U1163), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Cité (UPCité), Services des Maladies Infectieuses et Tropicales [CHU Saint-Antoine], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), and HAL-SU, Gestionnaire
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medicine.medical_specialty ,Time Factors ,Coronavirus disease 2019 (COVID-19) ,Immunology ,Psychological intervention ,Review Article ,Antiviral Agents ,Drug Administration Schedule ,Immunomodulating Agents ,Time frame ,Immune system ,Intervention (counseling) ,Pandemic ,Animals ,Humans ,Immunology and Allergy ,Medicine ,Intensive care medicine ,[SDV.MHEP] Life Sciences [q-bio]/Human health and pathology ,SARS-CoV-2 ,business.industry ,COVID-19 ,medicine.disease ,COVID-19 Drug Treatment ,Clinical trial ,Treatment Outcome ,Host-Pathogen Interactions ,Immunotherapy ,business ,Pneumonia (non-human) ,[SDV.MHEP]Life Sciences [q-bio]/Human health and pathology ,Immunosuppressive Agents - Abstract
As the COVID-19 pandemic is still ongoing, and considering the lack of efficacy of antiviral strategies to this date, and the reactive hyperinflammation leading to tissue lesions and pneumonia, effective treatments targeting the dysregulated immune response are more than ever required. Immunomodulatory and immunosuppressive drugs have been repurposed in severe COVID-19 with contrasting results. The heterogeneity in the timing of treatments administrations could be accountable for these discrepancies. Indeed, many studies included patients at different timepoints of infection, potentially hiding the beneficial effects of a time-adapted intervention. We aim to review the available data on the kinetics of the immune response in beta-coronaviruses infections, from animal models and longitudinal human studies, and propose a four-step model of severe COVID-19 timeline. Then, we discuss the results of the clinical trials of immune interventions with regards to the timing of administration, and finally suggest a time frame in order to delineate the best timepoint for each treatment.
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- 2022
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28. A narrative review of MRI acquisition for MR-guided-radiotherapy in prostate cancer
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Darren M. C. Poon, Oi Lei Wong, Kin Yin Cheung, Gladys Lo, Jing Yuan, and Siu Ki Yu
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medicine.medical_specialty ,business.industry ,medicine.medical_treatment ,Review Article ,urologic and male genital diseases ,medicine.disease ,Radiation therapy ,Prostate cancer ,medicine ,Radiology, Nuclear Medicine and imaging ,Narrative review ,Radiology ,business ,Mri guided - Abstract
Magnetic resonance guided radiotherapy (MRgRT), enabled by the clinical introduction of the integrated MRI and linear accelerator (MR-LINAC), is a novel technique for prostate cancer (PCa) treatment, promising to further improve clinical outcome and reduce toxicity. The role of prostate MRI has been greatly expanded from the traditional PCa diagnosis to also PCa screening, treatment and surveillance. Diagnostic prostate MRI has been relatively familiar in the community, particularly with the development of Prostate Imaging - Reporting and Data System (PI-RADS). But, on the other hand, the use of MRI in the emerging clinical practice of PCa MRgRT, which is substantially different from that in PCa diagnosis, has been so far sparsely presented in the medical literature. This review attempts to give a comprehensive overview of MRI acquisition techniques currently used in the clinical workflows of PCa MRgRT, from treatment planning to online treatment guidance, in order to promote MRI practice and research for PCa MRgRT. In particular, the major differences in the MRI acquisition of PCa MRgRT from that of diagnostic prostate MRI are demonstrated and explained. Limitations in the current MRI acquisition for PCa MRgRT are analyzed. The future developments of MRI in the PCa MRgRT are also discussed.
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- 2022
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29. Prone positioning for non-intubated spontaneously breathing patients with acute hypoxaemic respiratory failure: a systematic review and meta-analysis
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Alexandria Page, Zudin Puthucheary, Rupert M Pearse, and Brigitta Fazzini
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awake prone position ,ARDS ,Supine position ,non-invasive respiratory support ,medicine.medical_treatment ,Review Article ,Cochrane Library ,Patient Positioning ,Prone Position ,medicine ,Humans ,Wakefulness ,Noninvasive Ventilation ,SARS-CoV-2 ,business.industry ,Tracheal intubation ,COVID-19 ,Odds ratio ,medicine.disease ,hypoxic respiratory failure ,Prone position ,Anesthesiology and Pain Medicine ,Respiratory failure ,Meta-analysis ,Anesthesia ,Respiratory Insufficiency ,business - Abstract
Background Prone positioning in non-intubated spontaneously breathing patients is becoming widely applied in practice alongside noninvasive respiratory support. This systematic review and meta-analysis evaluates the effect, timing, and populations that might benefit from awake proning regarding oxygenation, mortality, and tracheal intubation compared with supine position in hypoxaemic acute respiratory failure. Methods We conducted a systematic literature search of PubMed/MEDLINE, Cochrane Library, Embase, CINAHL, and BMJ Best Practice until August 2021 (International Prospective Register of Systematic Reviews [PROSPERO] registration: CRD42021250322). Studies included comprise least-wise 20 adult patients with hypoxaemic respiratory failure secondary to acute respiratory distress syndrome or coronavirus disease (COVID-19). Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines were followed, and study quality was assessed using the Newcastle–Ottawa Scale and the Cochrane risk-of-bias tool. Results Fourteen studies fulfilled the selection criteria and 2352 patients were included; of those patients, 99% (n=2332/2352) had COVID-19. Amongst 1041 (44%) patients who were placed in the prone position, 1021 were SARS-CoV-2 positive. The meta-analysis revealed significant improvement in the PaO2/FiO2 ratio (mean difference –23.10; 95% confidence interval [CI]: –34.80 to 11.39; P=0.0001; I2=26%) after prone positioning. In patients with COVID-19, lower mortality was found in the group placed in the prone position (150/771 prone vs 391/1457 supine; odds ratio [OR] 0.51; 95% CI: 0.32–0.80; P=0.003; I2=48%), but the tracheal intubation rate was unchanged (284/824 prone vs 616/1271 supine; OR 0.72; 95% CI: 0.43–1.22; P=0.220; I2=75%). Overall proning was tolerated for a median of 4 h (inter-quartile range: 2–16). Conclusions Prone positioning can improve oxygenation amongst non-intubated patients with acute hypoxaemic respiratory failure when applied for at least 4 h over repeated daily episodes. Awake proning appears safe, but the effect on tracheal intubation rate and survival remains uncertain.
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- 2022
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30. PROTACs: A Hope for Breast Cancer Patients?
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Sandeep Arora, Gayatri P Sapkale, Gagan Deep Longowal, Pargat Singh, Rajwinder Kaur, Amritpal Kaur, and Gaurav Chaudhary
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Pharmacology ,Cancer Research ,medicine.medical_specialty ,business.industry ,Proteolysis targeting chimera ,MEDLINE ,Cancer ,Antineoplastic Agents ,Breast Neoplasms ,Disease ,Protein degradation ,medicine.disease ,Review article ,Small Molecule Libraries ,Breast cancer ,Current medication ,Family medicine ,Proteolysis ,medicine ,Humans ,Molecular Medicine ,Female ,business - Abstract
Background: Breast Cancer (BC) is the most widely recognized disease in women. A massive number of women are diagnosed with breast cancer and many lost their lives every year. Cancer is the subsequent driving reason for dying, giving rise to it one of the current medication's most prominent difficulties. Objectives: The main objective of the study is to examine and explore novel therapy (PROTAC) and its effectiveness against breast cancer. Methods: The literature search was done across Medline, Cochrane, ScienceDirect, Wiley Online, Google Scholar, PubMed, Bentham Sciences from 2001 to 2020. The articles were collected; screened, segregated, and selected papers were included for writing the review article. Results and Conclusion: A novel innovation emerged around two decades ago that has great potential to not only overcome the limitations but also can provide future direction for the treatment of many diseases which has presently not many therapeutic options available and regarded as incurable with traditional techniques; that innovation is called PROTAC (Proteolysis Targeting Chimera) and able to efficaciously ubiquitinate and debase cancer encouraging proteins by noncovalent interaction. PROTACs are constituted of two active regions isolated by a linker and equipped for eliminating explicit undesirable protein. It is empowering greater sensitivity to "drug-resistant targets" as well as a more prominent opportunity to influence non-enzymatic function. PROTACs have been demonstrated to show better target selectivity contrasted with traditional small-molecule inhibitors. So far, the most investigation into PROTACs possesses particularly concentrated on applications to cancer treatment including breast cancer, the treatment of different ailments may profit from this blossoming innovation.
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- 2022
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31. Finding the sweet spot: glycosylation mediated regulation of intestinal inflammation
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Charles A. Parkos and Jennifer C. Brazil
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Glycan ,Glycosylation ,animal structures ,Immunology ,Cell ,Review Article ,macromolecular substances ,Biology ,Metastasis ,chemistry.chemical_compound ,Immune system ,Polysaccharides ,Intestinal inflammation ,medicine ,Homeostasis ,Humans ,Immunology and Allergy ,Intestinal Mucosa ,Inflammation ,Sweet spot ,Cancer ,medicine.disease ,Cell biology ,carbohydrates (lipids) ,medicine.anatomical_structure ,chemistry ,biology.protein ,lipids (amino acids, peptides, and proteins) - Abstract
Glycans are essential cellular components that facilitate a range of critical functions important for tissue development and mucosal homeostasis. Furthermore, specific alterations in glycosylation represent important diagnostic hallmarks of cancer that contribute to tumor cell dissociation, invasion, and metastasis. However, much less is known about how glycosylation contributes to the pathobiology of inflammatory mucosal diseases. Here we will review how epithelial and immune cell glycosylation regulates gut homeostasis and how inflammation-driven changes in glycosylation contribute to intestinal pathobiology.
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- 2022
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32. Prospective for Diagnosis and Treatment of Diabetic Retinopathy
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Faiza Idris Himasa, Bhavna Kumar, Abhijeet Ojha, and Manmohan Singhal
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Adult ,medicine.medical_specialty ,Adolescent ,Eye Diseases ,Disease ,Retina ,Young Adult ,Ophthalmology ,Diabetes mellitus ,Drug Discovery ,Diabetes Mellitus ,Humans ,Medicine ,Prospective Studies ,Pharmacology ,Diabetic Retinopathy ,business.industry ,Retinal Detachment ,Retinal detachment ,Diabetic retinopathy ,Middle Aged ,medicine.disease ,Review article ,medicine.anatomical_structure ,Drug delivery ,Eye disorder ,business - Abstract
Abstract: Diabetic retinopathy is a posterior eye disorder in which damage occurs to the light sensitive retina due to diabetes mellitus. This disorder specifically affects people aged between 18-64 with type ІІ diabetes. This disease progresses through different pathophysiological pathways, which include oxidative stress, inflammation, stimulation of the growth factor in the eye’s vasculature, isoforms of protein kinase C, and also the activation of the hexosamine pathway. It starts as micro aneurysms and advances in complicated stage, which results in retinal detachment. Treatment of posterior eye diseases has complications due to the structural design of the eye and physiological barriers present. The current treatment approach involves the use of intravitreal anti- VEGFs, corticosteroids implants, laser and surgery; these treatment methods have drawbacks attributed to them despite their benefits. The development of a robust delivery system with minimal or no invasion to tackle the issues of diabetic retinopathy will be of considerable benefit to patients having diabetic retinopathy; the dependency on ophthalmologists for multiple injections will significantly reduce and provide a promising approach in drug delivery. In this review article, the authors provided information related to existing treatment methods available for diabetic retinopathy, the most significant among which is nanotechnology approach through which local delivery via the ocular route to posterior eye can be achieved. It also possesses the various carriers studied for the non-invasive approach for retinal delivery of medicaments. Non-invasive approach for delivery of drugs can be considered as potential for the treatment of diabetic retinopathy.
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- 2022
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33. Krüppel-like factor (KLF)5: An emerging foe of cardiovascular health
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Konstantinos Drosatos, Dimitra Palioura, and Antigone Lazou
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FGF21 ,business.industry ,Kruppel-Like Transcription Factors ,Cardiomyopathy ,Adipose tissue ,Heart ,FOXO1 ,White adipose tissue ,Bioinformatics ,medicine.disease ,Cardiovascular System ,Article ,Review article ,Cardiovascular physiology ,Humans ,Medicine ,Cardiomyopathies ,Cardiology and Cardiovascular Medicine ,business ,Molecular Biology ,PI3K/AKT/mTOR pathway ,Transcription Factors - Abstract
Krüppel-like factors (KLFs) are DNA-binding transcriptional factors, which regulate various pathways that pertain to development, metabolism and other cellular mechanisms. KLF5 was first cloned in 1993 and by 1999, it was reported as the intestinal-enriched KLF. Beyond findings that have associated KLF5 with normal development and cancer, it has been associated with various types of cardiovascular (CV) complications and regulation of metabolic pathways in the liver, heart, adipose tissue and skeletal muscle. Specifically, increased KLF5 expression has been linked with cardiomyopathy in diabetes, end-stage heart failure, and as well as in vascular atherosclerotic lesions. In this review article, we summarize research findings about transcriptional, post-transcriptional and post-translational regulation of KLF5, as well as the role of KLF5 in the biology of cells and organs that affect cardiovascular health either directly or indirectly. Finally, we propose KLF5 inhibition as an emerging approach for cardiovascular therapeutics.
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- 2022
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34. Surgical Free Flaps and Grafts in Head and Neck Reconstruction
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Prashant Raghavan, Robert E. Morales, Kalpesh T. Vakharia, and Sugoto Mukherjee
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medicine.medical_specialty ,Reconstructive surgery ,business.industry ,Head and neck cancer ,General Medicine ,medicine.disease ,Surgery ,Tumor recurrence ,Review article ,Myocutaneous Flaps ,Medicine ,Radiology, Nuclear Medicine and imaging ,Neurology (clinical) ,business ,Head and neck - Abstract
This review article discusses the basic principles behind the use of flaps and grafts for reconstructive surgery in the head and neck, with a special emphasis on the types of commonly used free flaps, their imaging appearance as well as some frequently encountered postoperative complications. Given the ubiquity and complexity of these reconstructive techniques, it is essential that head and neck radiologists be familiar in distinguishing between the expected evolving findings, complications, and tumor recurrence.
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- 2022
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35. Seroconversion rate after vaccination against COVID-19 in patients with cancer—a systematic review
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J-P. Spano, J-M. Michot, G. Antonarelli, Florian Scotté, Chiara Corti, J. Barrière, Giuseppe Curigliano, and Fabrice Andre
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Pediatrics ,medicine.medical_specialty ,COVID-19 Vaccines ,Sars-CoV-2 ,COVID19 ,Population ,Review Article ,immunogenicity ,Antibodies, Viral ,Immunogenicity, Vaccine ,Neoplasms ,vaccine ,Clinical endpoint ,Humans ,cancer ,Medicine ,Prospective Studies ,Seroconversion ,Prospective cohort study ,education ,education.field_of_study ,business.industry ,Mortality rate ,Vaccination ,COVID-19 ,Cancer ,Hematology ,medicine.disease ,Clinical trial ,Oncology ,business - Abstract
Background Coronavirus disease 2019 (COVID-19) has affected more than 210 million people worldwide. An optimal therapeutic approach for COVID-19 remains uncertain, to date. Since the history of cancer was linked to higher mortality rates due to COVID-19, the establishment of a safe and effective vaccine coverage is crucial in these patients. However, patients with cancer were mostly excluded from vaccine candidates’ clinical trials. This systematic review aims to investigate the current available evidence about the immunogenicity of COVID-19 vaccines in patients with cancer (PsC). Patients and methods All prospective studies that evaluated safety and efficacy of vaccines against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) were included, with immunogenicity after the first and the second dose as the primary endpoint, when available. Results Vaccination against COVID-19 for PsC seems overall safe and immunogenic after well-conducted vaccinations schedules. Yet, the seroconversion rate remains lower, lagged or both compared to the general population. Patients with hematologic malignancies, especially those receiving B cell depleting agents in the last 12 months are the most at risk of poor seroconversion. Conclusion A tailored approach to vaccination may be proposed to PsC, especially on the basis of the type of malignancy and of the specific oncologic treatments received.
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- 2022
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36. Narrative review of portal vein thrombosis in cirrhosis: pathophysiology, diagnosis, and management from an interventional radiology perspective
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Sameer Gadani, Cristiano Quintini, Nicholas Zerona, K. V. Narayanan Menon, Shreya Sengupta, Teresa Diago Uso, Abraham Levitin, Giuseppe D'Amico, and Sasan Partovi
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medicine.medical_specialty ,Cirrhosis ,medicine.diagnostic_test ,business.industry ,General surgery ,Perspective (graphical) ,Interventional radiology ,Review Article ,medicine.disease ,Pathophysiology ,Portal vein thrombosis ,medicine ,Narrative review ,Cardiology and Cardiovascular Medicine ,business - Abstract
OBJECTIVE: This paper examines the incidence, clinical presentation, and pathophysiology of portal vein thrombosis (PVT) in cirrhosis. Additionally, we have reviewed the literature regarding the current status of medical and interventional radiology management of PVT and have proposed a novel algorithm for the management given different clinical scenarios. Lastly two representative cases displaying endovascular treatment options are provided. BACKGROUND: Portal vein thrombus in the setting of cirrhosis is an increasingly recognized clinical issue with debate on its pathophysiology, natural course, and optimal treatment. Approximately one-third of patients are asymptomatic, and detection of the thrombus is an incidental finding on imaging performed for other reasons. In 30% to 50% of patients, PVT resolves spontaneously. However, there is increased post-transplant mortality in patients with completely occlusive PVT, therefore effective early revascularization strategies are needed for patients with complete PVT who are expected to undergo liver transplant. Additionally, no consensus has been reached regarding PVT treatment in terms of timing and type of interventions as well as type and duration of anticoagulation. METHODS: Computerized literature search as well as discussion with experts in the field. CONCLUSIONS: Management of PVT is complex, as many variables affect which treatments can be used. Anticoagulation appears to be the optimal first-line treatment in patients with acute PVT but without bleeding varices or mesenteric ischemia. Minimally invasive treatments include various methods of mechanical thrombectomy, chemical thrombolysis, and transjugular intrahepatic portosystemic shunt (TIPS) placement with or without variceal embolization. Definitive recommendations are difficult due to lack of high quality data and continued research is needed to evaluate the efficacy of different anticoagulants as well as the timing and use of various minimally invasive therapies in specific circumstances.
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- 2022
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37. Re-irradiation for intra-thoracic tumours and extra-thoracic breast cancer: dose accumulation, evaluation of efficacy and toxicity based on a literature review
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R. Kulik, Dorota Gabrys, and Agnieszka Namysł-Kaletka
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Re-Irradiation ,medicine.medical_specialty ,Lung Neoplasms ,medicine.medical_treatment ,Breast Neoplasms ,Review Article ,Breast cancer ,medicine ,Humans ,Radiology, Nuclear Medicine and imaging ,Lung cancer ,Lung ,business.industry ,Cancer ,General Medicine ,Thoracic Neoplasms ,medicine.disease ,Dysphagia ,Radiation therapy ,medicine.anatomical_structure ,Toxicity ,Female ,Radiology ,medicine.symptom ,Neoplasm Recurrence, Local ,business - Abstract
The improvement seen in the diagnostic procedures and treatment of thoracic tumours means that patients have an increased chance of longer overall survival. Nevertheless, we can still find those who have had a recurrence or developed a secondary cancer in the previously treated area. These patients require retreatment including re-irradiation. We have reviewed the published data on thoracic re-irradiation, which shows that some specific healthy tissues can tolerate a significant dose of irradiation and these patients benefit from aggressive treatment; however, there is a risk of damage to normal tissue under these circumstances. We analysed the literature data on re-irradiation in the areas of vertebral bodies, spinal cord, breast, lung and oesophagus. We evaluated the doses of primary and secondary radiotherapy, the treatment techniques, as well as the local control and median or overall survival in patients treated with re-radiation. The longest OS is reported in the case of re-irradiation after second breast-conserving therapy where the 5-year OS range is 81 to 100% and is shorter in patients with loco-reginal re-irradiation where the 5-y OS range is 18 to 60%. 2-year OS in patients re-irradiated for lung cancer and oesophagus cancer range from 13 to 74% and 18 to 42%, respectively. Majority grade ≥3 toxicity after second breast-conserving therapy was fibrosis up to 35%. For loco-regional breast cancer recurrences, early toxicity occurred in up to 33% of patients resulting in mostly desquamation, while late toxicity was recorded in up to 23% of patients and were mostly ulcerations. Early grade ≥3 lung toxicity developed in up to 39% of patients and up to 20% of Grade 5 hemoptysis. The most frequently observed early toxicity grade ≥3 in oesophageal cancer was oesophagitis recorded in up to 57% of patients, followed by hematological complications which was recorded in up to 50% of patients. The most common late complications included dysphagia, recorded in up to 16.7% of patients. We have shown that thoracic re-irradiation is feasible and effective in achieving local control in some patients. Re-irradiation should be performed with maximum accuracy and care using the best available treatment methods with a highly conformal, image-guided approach. Due to tremendous technological progress in the field of radiotherapy, we can deliver radiation precisely, shorten the overall treatment time and potentially reduce treatment-related toxicities.
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- 2023
38. Aldo-keto reductases and cancer drug resistance
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Tea Lanišnik Rižner, Sravan Jonnalagadda, Trevor M. Penning, and Paul C. Trippier
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Vinca ,Aldo-Keto Reductases ,Drug Resistance ,Antineoplastic Agents ,Review Article ,Drug resistance ,Downregulation and upregulation ,Aldehyde Reductase ,Neoplasms ,rak ,medicine ,Humans ,cancer ,Transcription factor ,aldo-keto reductases ,Pharmacology ,chemistry.chemical_classification ,Aldo-keto reductase ,Reactive oxygen species ,drug resistance ,biology ,aldo-keto reduktaze ,Chemistry ,odpornost na zdravila ,Cancer ,Metabolism ,biology.organism_classification ,medicine.disease ,udc:615 ,Cancer research ,Molecular Medicine - Abstract
Human aldo-keto reductases (AKRs) catalyze the NADPH-dependent reduction of carbonyl groups to alcohols for conjugation reactions to proceed. They are implicated in resistance to cancer chemotherapeutic agents either because they are directly involved in their metabolism or help eradicate the cellular stress created by these agents (e.g., reactive oxygen species and lipid peroxides). Furthermore, this cellular stress activates the Nuclear factor-erythroid 2 p45-related factor 2 (NRF2)-Kelch-like ECH-associated protein 1 pathway. As many human AKR genes are upregulated by the NRF2 transcription factor, this leads to a feed-forward mechanism to enhance drug resistance. Resistance to major classes of chemotherapeutic agents (anthracyclines, mitomycin, cis-platin, antitubulin agents, vinca alkaloids, and cyclophosphamide) occurs by this mechanism. Human AKRs also catalyze the synthesis of androgens and estrogens and the elimination of progestogens and are involved in hormonal-dependent malignancies. They are upregulated by antihormonal therapy providing a second mechanism for cancer drug resistance. Inhibitors of the NRF2 system or pan-AKR1C inhibitors offer promise to surmount cancer drug resistance and/or synergize the effects of existing drugs. Significance Statement Aldo-keto reductases (AKRs) are overexpressed in a large number of human tumors and mediate resistance to cancer chemotherapeutics and antihormonal therapies. Existing drugs and new agents in development may surmount this resistance by acting as specific AKR isoforms or AKR pan-inhibitors to improve clinical outcome.
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- 2023
39. Evaluating suspected small bowel obstruction with the water-soluble contrast challenge
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Edward M. Lawrence and Perry J. Pickhardt
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Adult ,Radiography, Abdominal ,medicine.medical_specialty ,Colon ,Iohexol ,Administration, Oral ,Contrast Media ,Review Article ,Conservative Treatment ,Ct examination ,Intestine, Small ,medicine ,Humans ,Radiology, Nuclear Medicine and imaging ,Clinical efficacy ,Gastrointestinal Transit ,Intubation, Gastrointestinal ,Aged ,Diatrizoate Meglumine ,Aged, 80 and over ,business.industry ,General Medicine ,Middle Aged ,medicine.disease ,Bowel obstruction ,Water soluble ,Treatment Outcome ,Radiology ,Triage ,business ,Algorithms ,Intestinal Obstruction - Abstract
With optimized technique, the water-soluble contrast challenge is effective at triaging patients for operative vs non-operative management of suspected small bowel obstruction. Standardized study structure and interpretation guidelines aid in clinical efficacy and ease of use. Many tips and tricks exist regarding technique and interpretation, and their understanding may assist the interpreting radiologist. In the future, a CT-based water-soluble contrast challenge, utilizing oral contrast given as part of the initial CT examination, might allow for a more streamlined algorithm and provide more rapid results.
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- 2023
40. Anatomical endoscopic enucleation of the prostate for bladder outlet obstruction: a narrative review
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Tae Hyo Kim and Phil Hyun Song
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medicine.medical_specialty ,medicine.diagnostic_test ,business.industry ,Enucleation ,Gold standard ,Hyperplasia ,medicine.disease ,Prostate size ,Endoscopy ,Review article ,Bladder outlet obstruction ,medicine.anatomical_structure ,Prostate ,Medicine ,Radiology ,business - Abstract
Anatomical endoscopic enucleation of the prostate (AEEP) differs from other endoscopic modalities for bladder outlet obstruction (BOO) because it extracts the whole benign prostatic hyperplasia component. AEEP has been launched for almost 40 years as a first-line treatment method for BOO regardless of prostate size according to several guidelines. However, it remains underperformed worldwide. In this review article, we elaborate on the advantages and disadvantages of AEEP compared to other surgical modalities for BOO to investigate its efficacy and safety as a gold standard surgical management option for males with BOO.
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- 2022
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41. Ефективність та доцільність застосування напроксену при різних клінічних ситуаціях
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I.Yu. Golovach
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Drug ,medicine.medical_specialty ,Naproxen ,business.industry ,media_common.quotation_subject ,Analgesic ,Osteoarthritis ,Chronic pain syndrome ,medicine.disease ,law.invention ,Review article ,Randomized controlled trial ,law ,Rheumatoid arthritis ,medicine ,Intensive care medicine ,business ,medicine.drug ,media_common - Abstract
В оглядовій статті подано докази клінічної ефективності напроксену в лікуванні пацієнтів ревматологічного профілю. Сучасна концепція раціонального й безпечного застосування нестероїдних протизапальних препаратів (НПЗП) передбачає досягнення максимальної ефективності разом з максимальним зниженням ризику ускладнень, насамперед із боку серцево-судинної та гастроінтестинальної систем. За даними клінічних досліджень, серед усіх НПЗП найменший ризик кардіоваскулярних ускладнень відзначений у напроксену. Напроксен належить до групи неселективних НПЗП, активно використовується в клінічний практиці вже понад 40 років та завоював довіру лікарів як надійний анальгетик та протизапальний засіб. Терапевтичний потенціал напроксену доведений при різних клінічних ситуаціях — від гострих епізодів болю та запалення і до хронічного больового синдрому в ревматологічній практиці. У статті наведені та проаналізовані рандомізовані клінічні випробування, що підкреслюють клінічну ефективність та безпеку при застосуванні напроксену при гострому подагричному артриті, гострих травмах, остеоартриті, ревматоїдному артриті та спондилоартритах.
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- 2022
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42. Метаболічний фенотип остеоартриту: подвійна роль ожиріння
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I.Yu. Golovach
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Insulin resistance ,business.industry ,Diabetes mellitus ,medicine ,Adipokine ,Type 2 Diabetes Mellitus ,Metabolic syndrome ,medicine.disease ,business ,Bioinformatics ,Obesity ,Dyslipidemia ,Review article - Abstract
Останніми роками спостерігається зростання інте-ресу до метаболічних змін при остеоартриті. В оглядовій статті підсумовані дані щодо метаболічного фенотипу остеоартриту, ролі ожиріння, дисліпідемії, цукрового діабету в розвитку метаболічного фенотипу. Поточні проспективні епідеміологічні дослідження демонструють наявність чітких асоціацій між остеоартритом і компонентами метаболічного синдрому. Деякі дослідники схильні розглядати метаболічний остеоартрит тільки як наслідок надлишкового навантаження на опорні суглоби внаслідок ожиріння. Однак численні недавні дослідження продемонстрували, що адипокіни і цитокіни, що продукуються жировою тканиною, гіперглікемія, інсулінорезистентність та дисліпідемія здатні порушувати метаболізм суглобових тканин. Вісцеральне ожиріння, дисліпідемія й інсулінорезистентність формують особливий вид запалення — низькорівневе, хронічне, пов’язане з метаболічними розладами, що отримало назву «метазапалення». Саме цей вид запалення відіграє вирішальну роль в патогенезі ожиріння, цукрового діабету 2-го типу та його ускладнень, а множинні сигнальні шляхи пов’язують інсулінорезистентність та імунну відповідь. Ожиріння здійснює двояку дію на перебіг остеоартриту: механічний вплив на опорні суглоби, а також генерація метазапалення, що порушує метаболізм суглобових тканин неопірних суглобів. Таким чином, ожиріння може впливати на патогенез і прогресування остеоартриту за допомогою біомеханічних ефектів, а також при збільшенні метастимулюючого запалення.
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- 2022
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43. Pathophysiology, Diagnosis, and Management of Coronary No-Reflow Phenomenon
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Balaji Natarajan, Padmini Varadarajan, Gagan Kaur, Prabhdeep Sethi, Ashis Mukherjee, Patrick Baghdasaryan, and Ramdas G. Pai
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medicine.medical_specialty ,business.industry ,Mechanism (biology) ,medicine.medical_treatment ,030204 cardiovascular system & hematology ,medicine.disease ,Revascularization ,Review article ,03 medical and health sciences ,0302 clinical medicine ,medicine.anatomical_structure ,Internal medicine ,No reflow phenomenon ,medicine ,Cardiology ,030212 general & internal medicine ,Endothelial dysfunction ,business ,Ventricular remodeling ,Cardiology and Cardiovascular Medicine ,Artery ,Cardiac catheterization - Abstract
Coronary no-reflow phenomenon is a lethal mechanism of ongoing myocardial injury following successful revascularization of an infarct-related coronary artery. Incidence of this phenomenon is high following percutaneous intervention and is associated with adverse in-hospital and long-term outcomes. Several mechanisms such as ischemia-reperfusion injury and distal microthromboembolism in genetically susceptible patients and those with preexisting endothelial dysfunction have been implicated. However, the exact mechanism in humans is still poorly understood. Several investigative and treatment strategies within and outside the cardiac catheterization laboratory have been proposed, but they have not uniformly shown success in reducing mortality or in preventing adverse left ventricular remodeling resulting from this condition. The aim of this article is to provide a brief and concise review of the current understanding of the pathophysiology, clinical predictors, and investigations and management of coronary no-reflow phenomenon.
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- 2022
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44. Invasive and non-invasive assessment of ischaemia in chronic coronary syndromes
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Tim P. van de Hoef, Sven Plein, Ozan M. Demir, Divaka Perera, Javier Escaned, Haseeb Rahman, and Jan J. Piek
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medicine.medical_specialty ,Ischemia ,Ischaemic Heart Disease ,Coronary Angiography ,Coronary pressure ,Angina ,Coronary circulation ,medicine ,Humans ,State of the Art Review ,Coronary physiology ,AcademicSubjects/MED00200 ,Intensive care medicine ,medicine.diagnostic_test ,business.industry ,Microcirculation ,Non invasive ,Coronary Stenosis ,Syndrome ,medicine.disease ,Review article ,Clinical Practice ,medicine.anatomical_structure ,Angiography ,Stable coronary artery disease ,Cardiology and Cardiovascular Medicine ,business - Abstract
Intracoronary physiology testing has emerged as a valuable diagnostic approach in the management of patients with chronic coronary syndrome, circumventing limitations like inferring coronary function from anatomical assessment and low spatial resolution associated with angiography or non-invasive tests. The value of hyperaemic translesional pressure ratios to estimate the functional relevance of coronary stenoses is supported by a wealth of prognostic data. The continuing drive to further simplify this approach led to the development of non-hyperaemic pressure-based indices. Recent attention has focussed on estimating physiology without even measuring coronary pressure. However, the reduction in procedural time and ease of accessibility afforded by these simplifications needs to be counterbalanced against the increasing burden of physiological assumptions, which may impact on the ability to reliably identify an ischaemic substrate, the ultimate goal during catheter laboratory assessment. In that regard, measurement of both coronary pressure and flow enables comprehensive physiological evaluation of both epicardial and microcirculatory components of the vasculature, although widespread adoption has been hampered by perceived technical complexity and, in general, an underappreciation of the role of the microvasculature. In parallel, entirely non-invasive tools have matured, with the utilization of various techniques including computational fluid dynamic and quantitative perfusion analysis. This review article appraises the strengths and limitations for each test in investigating myocardial ischaemia and discusses a comprehensive algorithm that could be used to obtain a diagnosis in all patients with angina scheduled for coronary angiography, including those who are not found to have obstructive epicardial coronary disease., Graphical Abstract Graphical AbstractIllustration of hierarchy of coronary indices and optimal coronary indices by coronary artery disease substrate. CFR, coronary flow reserve; CT, computed tomography; FFR, fractional flow reserve; hMR, hyperaemic microvascular resistance; hSR, hyperaemic stenosis resistance; iFR, instantaneous wave-free ratio; IMR, index of microvascular resistance; NHPR, non-hyperaemic pressure ratio; Pd/Pa, resting distal to aortic pressure ratio; QFR, quantitative flow reserve.
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- 2022
45. Цукровий діабет і гострі коронарні синдроми
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V.A. Serhiyenko and A.A. Serhiyenko
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medicine.medical_specialty ,Acute coronary syndrome ,business.industry ,Ischemia ,цукровий діабет, гострі коронарні синдроми, огляд ,RC648-665 ,medicine.disease ,Clopidogrel ,Diseases of the endocrine glands. Clinical endocrinology ,Review article ,Coronary artery disease ,Pharmacotherapy ,Diabetes mellitus ,Internal medicine ,medicine ,Cardiology ,diabetes mellitus, acute coronary syndromes, review ,business ,Ticagrelor ,medicine.drug - Abstract
This review article summarizes the existing literature on the current state of the problem of diabetes mellitus and acute coronary syndromes. In particular, the issues are analyzed related to the etiology, epidemiology, main pathophysiological features, classification of acute coronary syndromes, acute coronary syndromes without persistent ST-segment elevation on the electrocardiogram, acute coronary syndromes with ST-segment elevation, non-atherosclerotic causes of acute coronary syndrome, laboratory and instrumental diagnostic tests. Issues were analyzed related to the main approaches to the treatment of acute coronary syndromes, management of patients with diabetes mellitus and acute coronary syndromes, recommendations for secondary prevention. Initial treatment with corticosteroids includes acetylsalicylic acid, bolus heparin and intravenous heparin infusion (in the absence of contraindications). Antiplatelet therapy with ticagrelor or clopidogrel is also recommended. Pain is controlled using morphine/fentanyl and oxygen in case of hypoxia. Nitroglycerin can also be used sublingually or by infusion to relieve pain. Continuous monitoring of myocardial activity for arrhythmia is required. The choice of reperfusion strategy in patients with diabetes mellitus should be based on many factors, including assessment of clinical status (hemodynamic/electrical instability, prolonged ischemia), complications of chronic coronary syndrome, ischemic load, echocardiography, assessment of left ventricular function and any other comorbidities. In addition, various methods for assessing coronary artery disease and predicting mortality due to surgery are needed to make a final decision. Advances in the sensitivity of cardiac biomarkers and the use of risk assessment tools now enable rapid diagnosis within a few hours of symptom onset. Advances in the invasive management and drug therapy have resulted in improved clinical outcomes with resultant decline in mortality associated with acute coronary syndrome., В огляді проведений аналіз літературних джерел, присвячених сучасному стану проблеми цукрового діабету і гострих коронарних синдромів (ГКС). Зокрема, аналізуються питання, пов’язані з етіологією, епідеміологією, основними патофізіологічними особливостями, класифікацією гострих коронарних синдромів, гострих коронарних синдромів без стійкого підйому сегмента ST на ЕКГ, гострих коронарних синдромів із підйомом сегмента ST, неатеросклеротичними причинами гострого коронарного синдрому, лабораторними та інструментальними діагностичними дослідженнями. Аналізуються питання, пов’язані з основними підходами до лікування гострих коронарних синдромів, ведення хворих на цукровий діабет із гострими коронарними синдромами, рекомендаціями із вторинної профілактики. Першопочаткове лікування всіх ГКС включає ацетилсаліцилову кислоту, болюсне призначення гепарину та внутрішньовенну інфузію гепарину (за відсутності протипоказань). Також рекомендується антиагрегантна терапія тікагрелором або клопідогрелем. Забезпечують контроль болю за допомогою морфіну/фентанілу та кисню у разі гіпоксії. З метою зняття болю також можна використовувати нітрогліцерин сублінгвально або інфузійно. Необхідний постійний моніторинг діяльності міокарда на предмет аритмії. Вибір стратегії реперфузії у хворих на цукровий діабет повинен базуватися на багатьох чинниках, зокрема, на оцінці клінічного статусу (гемодинамічна/електрична нестабільність, тривала ішемія), ускладнень хронічного коронарного синдрому, ішемічного навантаження, ЕхоКГ-оцінці функції лівого шлуночка та будь-яких інших супутніх захворювань. Крім того, для прийняття остаточного рішення потрібно використовувати різні методи оцінки уражень коронарних артерій та прогнозування хірургічної смертності внаслідок оперативного втручання.
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- 2022
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46. Critical roles of FTO-mediated mRNA m6A demethylation in regulating adipogenesis and lipid metabolism: Implications in lipid metabolic disorders
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Tianhong Peng, Zhou Yang, Guang-li Yu, Yun-Cheng Lv, and Xiao Zhu
- Subjects
0301 basic medicine ,Medicine (General) ,endocrine system diseases ,Adipose tissue ,Skeletal muscle ,030209 endocrinology & metabolism ,Review Article ,QH426-470 ,Biochemistry ,Lipid disorder diseases ,03 medical and health sciences ,0302 clinical medicine ,R5-920 ,Lipid droplet ,medicine ,Genetics ,Molecular Biology ,Beta oxidation ,Genetics (clinical) ,Demethylation ,Chemistry ,Fatty liver ,AMPK ,nutritional and metabolic diseases ,Lipid metabolism ,Cell Biology ,medicine.disease ,Cell biology ,030104 developmental biology ,Liver ,Adipogenesis ,Lipogenesis ,FTO - Abstract
The goal this review is to clarify the effects of the fat mass and obesity-associated protein (FTO) in lipid metabolism regulation and related underlying mechanisms through the FTO-mediated demethylation of m6A modification. FTO catalyzes the demethylation of m6A to alter the processing, maturation and translation of the mRNAs of lipid-related genes. FTO overexpression in the liver promotes lipogenesis and lipid droplet (LD) enlargement and suppresses CPT-1–mediated fatty acid oxidation via the SREBP1c pathway, promoting excessive lipid storage and nonalcoholic fatty liver diseases (NAFLD). FTO enhances preadipocyte differentiation through the C/EBPβ pathway, and facilitates adipogenesis and fat deposition by altering the alternative splicing of RUNX1T1, the expression of PPARγ and ANGPTL4, and the phosphorylation of PLIN1, whereas it inhibits lipolysis by inhibiting IRX3 expression and the leptin pathway, causing the occurrence and development of obesity. Suppression of the PPARβ/δ and AMPK pathways by FTO-mediated m6A demethylation damages lipid utilization in skeletal muscles, leading to the occurrence of diabetic hyperlipidemia. m6A demethylation by FTO inhibits macrophage lipid influx by downregulating PPARγ protein expression and accelerates cholesterol efflux by phosphorylating AMPK, thereby impeding foam cell formation and atherosclerosis development. In summary, FTO-mediated m6A demethylation modulates the expression of lipid-related genes to regulate lipid metabolism and lipid disorder diseases.
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- 2022
47. Detecting the Uncommon Imaging Manifestations of Posterior Reversible Encephalopathy Syndrome (PRES) in Adults: a Comprehensive Illustrated Guide for the Trainee Radiologist
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Pravin Mundada, Vivek Pai, Iram R Khan, Yih Yian Sitoh, and Bela Purohit
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Adult ,medicine.medical_specialty ,Encephalopathy ,Posterior fossa ,Brain Edema ,030218 nuclear medicine & medical imaging ,Leukoencephalopathy ,03 medical and health sciences ,Impaired renal function ,0302 clinical medicine ,Pregnancy ,Radiologists ,Humans ,Medicine ,Radiology, Nuclear Medicine and imaging ,Brain Diseases ,Eclampsia ,business.industry ,Brain edema ,Posterior reversible encephalopathy syndrome ,medicine.disease ,Magnetic Resonance Imaging ,Review article ,Radiography ,030220 oncology & carcinogenesis ,Female ,Posterior Leukoencephalopathy Syndrome ,Radiology ,business - Abstract
Posterior reversible encephalopathy syndrome (PRES) has traditionally been described as a reversible leukoencephalopathy with a distinct pattern of posteriorly distributed vasogenic oedema involving the subcortical regions of parietal and occipital lobes. PRES commonly occurs in the setting of hypertensive emergencies, pre-eclampsia/eclampsia, impaired renal function, and immunosuppressive therapy. The various clinical presentations of PRES include encephalopathy, seizures, headache, visual, and focal neurological deficits. As knowledge of this entity grows, the range of clinical, and radiological features is seen to be much broader than originally described. The brain oedema may not always be posteriorly distributed and the syndrome may not be uniformly reversible. Of special note are some uncommon imaging features (unilateral cerebral involvement, and isolated posterior fossa involvement) and also some uncommon complications (haemorrhage, cytotoxic oedema, and vasoconstriction). These red herrings may lead to potential diagnostic challenges and pitfalls especially for trainee radiologists, who often read these scans in an emergency setting. Early and accurate diagnosis is crucial for prompt optimum management, thereby avoiding residual morbidity. This review article focusses on the atypical radiological features of PRES in adults with extensive case-based imaging examples. A brief description of the pathophysiology, clinical, and classic radiological features of PRES has also been included. A tabulated summary of potential mimics with diagnostic pearls is provided to highlight pertinent take home points and to serve as an easy guide for day-to-day clinical practice.
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- 2022
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48. Panax ginseng: Inflammation, platelet aggregation, thrombus formation, and atherosclerosis crosstalk
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Man Hee Rhee, Seung-Chun Park, Yuan Yee Lee, and Sung Dae Kim
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Cell ,Inflammation ,Review Article ,Biochemistry, Genetics and Molecular Biology (miscellaneous) ,chemistry.chemical_compound ,Ginseng ,Immune system ,medicine ,Platelet aggregation ,cardiovascular diseases ,Thrombus ,Vulnerable plaque ,Innate immune system ,Cholesterol ,business.industry ,Botany ,Atherosclerosis ,medicine.disease ,Crosstalk (biology) ,medicine.anatomical_structure ,Complementary and alternative medicine ,chemistry ,QK1-989 ,Cancer research ,medicine.symptom ,business ,Biotechnology - Abstract
Ginseng has been widely studied due to its various therapeutic properties on various diseases such as cardiovascular disease (CVD). Cardiovascular disease has been canonically known to be caused by high levels of low-density lipoproteins (LDL) in the bloodstream, in addition to the impaired vasodilatory effects of cholesterol. However, current research on CVD has revealed a cascade of mechanisms involving a series of events that contribute to the progression of CVD. Although this has been elucidated and summarized in previous studies the detailed correlation between platelet aggregation and innate immunity that plays an important role in CVD progression has not been thoroughly summarized. Furthermore, immune cell subtypes also contribute to the progression of plaque formation in the subendothelial layer. Thrombus formation and the coagulation cascade also have a vital role in the progression of atherosclerosis. Hence, in this mini review we aim to elucidate, summarize, and propose the potent therapeutic effect of ginseng on CVD, mainly on platelet aggregation, plaque formation, and thrombus formation., Graphical abstract Image 1
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- 2022
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49. A Review on Epigenetic Effects of Environmental Factors Causing and Inhibiting Cancer
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Sorayya Ghasemi and Fatemeh Khaledi
- Subjects
Cancer prevention ,biology ,Mechanism (biology) ,Cancer ,General Medicine ,Epigenome ,DNA Methylation ,Environment ,medicine.disease ,Bioinformatics ,Biochemistry ,Epigenesis, Genetic ,Review article ,Histone ,Neoplasms ,DNA methylation ,medicine ,biology.protein ,Humans ,Molecular Medicine ,Epigenetics ,Molecular Biology - Abstract
Epigenetic modifications refer to reversible changes in gene expression. Epigenetic changes include DNA methylation, histone modification, and non-coding RNAs that are collectively called epigenome. Various epigenetic effects account for the main impacts of environment and lifestyle on multifactorial diseases such as cancers. The environment's impacts on cancers act as double-edged swords. While some of them are involved in cancer development, some others contribute to preventing it. In this review article, the keywords "cancer", "epigenetic", "lifestyle", "carcinogen", " cancer inhibitors” and related words were searched to finding a link between environmental factors and epigenetic mechanisms influencing cancer in ISI, PUBMED, SCOPUS, and Google Scholar databases. Based on the literature environmental factors that are effective in cancer development or cancer prevention in this review will be divided into physical, chemical, biological, and lifestyle types. Different types of epigenetic mechanisms known for each of these agents will be addressed in this review. Unregulated changes in epigenome play roles in tumorigenicity and cancer development. The action mechanism and genes targeted which are related to the signaling pathway for epigenetic alterations determine whether environmental agents are carcinogenic or prevent cancer. Having knowledge about the effective factors and related mechanisms such as epigenetic on cancer can help to prevent and better cancers treatment.
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- 2022
- Full Text
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50. Phytochemicals used as inhibitors in the treatment of ovarian cancer: A Mini-review
- Author
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Jagdeep Kumar, Ajay Sharma, and Mahima Pundir
- Subjects
Cell cycle checkpoint ,Oncogene ,business.industry ,Cancer ,Disease ,medicine.disease ,Review article ,Vascular endothelial growth factor ,chemistry.chemical_compound ,chemistry ,Cell culture ,medicine ,Cancer research ,business ,Ovarian cancer - Abstract
Cancer occurs when cells begin to grow abnormally and abruptly in the body. Cancer is one of the dangerous diseases due to which many people die in the world. Many kinds of cancers occur in the human body in which ovarian cancer is also one of the most fatal cancers found among women. It causes many deaths in women. Ovarian cancer generally occurs because of hereditary. Both types of molecules can be used in medicines; i.e., synthesized by man in the laboratories and naturally occurring molecules. Phytochemicals are the naturally occurring molecules found in plants. Phytochemicals are of great importance nowadays because our research is more focusing on plant-based molecules which can be helpful in the treatment of any kind of disease and have fewer side effects. In this review article, we examined how various phytochemicals are utilized as inhibitors in the therapy of ovarian malignancy. Phytochemicals including flavonoids, terpenes, and organo-Sulphur compounds have antioxidant, anti-inflammatory, antitumor, antiviral, apoptosis induction, anti-proliferation, and cell cycle arrest induction properties that help in the inhibition of CAOV3, OVCAR3, OVCAR5, TOV112D, and A2780 ovarian cancer cells. Also helps in suppressing the expression of c-Myc (cellular-Myc: An oncogene on chromosome 8q24 of cellular), VEGF (Vascular endothelial growth factor), and NF-κB (Nuclear factor-kappa B) in ovarian cancer cell lines.
- Published
- 2022
- Full Text
- View/download PDF
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