65 results on '"Kavitha, K."'
Search Results
2. Results on controllability of Hilfer fractional differential equations with infinite delay via measures of noncompactness
- Author
-
Kavitha, K., primary, Vijayakumar, V., additional, Udhayakumar, R., additional, and Ravichandran, C., additional
- Published
- 2021
- Full Text
- View/download PDF
3. A note on approximate controllability of the Hilfer fractional neutral differential inclusions with infinite delay
- Author
-
Kavitha, K., primary, Vijayakumar, V., additional, Udhayakumar, R., additional, Sakthivel, N., additional, and Sooppy Nisar, Kottakkaran, additional
- Published
- 2020
- Full Text
- View/download PDF
4. Results on the existence of Hilfer fractional neutral evolution equations with infinite delay via measures of noncompactness
- Author
-
Kavitha, K., primary, Vijayakumar, V., additional, Udhayakumar, R., additional, and Nisar, Kottakkaran Sooppy, additional
- Published
- 2020
- Full Text
- View/download PDF
5. Ultrathin Yttria-Stabilized Zirconia as a Flexible and Stable Substrate for Infrared Nano-Optics
- Author
-
Gopalan, Kavitha K., primary, Rodrigo, Daniel, additional, Paulillo, Bruno, additional, Soni, Kamal K., additional, and Pruneri, Valerio, additional
- Published
- 2018
- Full Text
- View/download PDF
6. Photodetectors: Mid-Infrared Pyroresistive Graphene Detector on LiNbO3 (Advanced Optical Materials 4/2017)
- Author
-
Mark B. Lundeberg, Valerio Pruneri, Romain Parret, Sebastien Nanot, Kavitha K. Gopalan, Frank H. L. Koppens, and Davide Janner
- Subjects
Materials science ,business.industry ,Graphene ,Lithium niobate ,Detector ,Mid infrared ,Photodetector ,Photodetection ,Atomic and Molecular Physics, and Optics ,Electronic, Optical and Magnetic Materials ,Pyroelectricity ,law.invention ,chemistry.chemical_compound ,chemistry ,law ,Optical materials ,Optoelectronics ,business - Published
- 2017
- Full Text
- View/download PDF
7. Tunable complete optical absorption in multilayer structures including 𝐆𝐞𝟐𝐒𝐛𝟐𝐓𝐞𝟓 without lithographic patterns
- Author
-
Mkhitaryan, Vahagn K., Ghosh, Dhriti S., Rudé, Miquel, Canet-Ferrer, Josep, Maniyara, Rinu Abraham, Gopalan, Kavitha K., Pruneri, Valerio, and Universitat Politècnica de Catalunya. Institut de Ciències Fotòniques
- Subjects
Física [Àrees temàtiques de la UPC] ,Llum ,Physics::Optics ,Light absorption ,Multilayer Structures - Abstract
Controlling the spectral transmission, reflection, and absorption properties of optical structures is of great interest for many applications in photonics. Particularly, perfect absorbers over a wide frequency (wavelength) range are desirable for thin-film thermal emitters, thermo-solar cells, photodetectors, and smart windows. Up to date, several mechanisms have been proposed to achieve nearly 100% absorption in various frequency ranges of the electromagnetic spectrum; starting from microwaves to near infrared (NIR) and visible. One of the first demonstrations of a structure that was absorbing with nearly 100% efficiency was proposed by Landy et al. in 2008,[1] where metamaterial resonator arrays were used to achieve narrowband and highly resonant absorption of GHz and THz waves. The narrowband character of the resonances can be an advantage when absorbers with high quality factor are required and wavelength selectivity is desirable. However, there are many applications that need broadband absorption. To this end great efforts have been made during the last decade, for instance by mixing multiple resonances in a many-fold resonator, which can lead to, e.g., dual band[2] or multiband[3-9] resonant absorption. Unfortunately fabrication of these structures requires sophisticated techniques such as micro- or nano-lithography, severely limiting their scalability and increasing the cost of the absorber.
- Published
- 2017
8. Topical perfluorodecalin resolves immediate whitening reactions and allows rapid effective multiple pass treatment of tattoos
- Author
-
Robert Anolik, Julie K. Karen, Leonard J. Bernstein, Jeremy A. Brauer, Elizabeth K. Hale, Kavitha K. Reddy, Lori Brightman, Roy G. Geronemus, and Elliot Weiss
- Subjects
Single pass ,medicine.medical_specialty ,Time Factors ,Lasers, Solid-State ,Dermatology ,Outcome assessment ,Administration, Cutaneous ,chemistry.chemical_compound ,Multiple pass ,Outcome Assessment, Health Care ,medicine ,Humans ,Single-Blind Method ,Skin ,Fluorocarbons ,Tattooing ,business.industry ,Tattoo removal ,Surgery ,Perfluorodecalin ,chemistry ,Dermatologic Agents ,Treatment time ,business ,Previously treated ,Nuclear medicine ,Tomography, Optical Coherence - Abstract
Background and Objective Laser tattoo removal using multiple passes per session, with each pass delivered after spontaneous resolution of whitening, improves tattoo fading in a 60-minute treatment time. Our objective was to evaluate the safety and efficacy of topical perfluorodecalin (PFD) in facilitating rapid effective multiple-pass tattoo removal. Study Design In a randomized, controlled study using Q-switched ruby or Nd:YAG laser, 22 previously treated tattoos were treated with 3 passes using PFD to resolve whitening after each pass (“R0 method”). In previously untreated symmetric tattoos, seven were treated over half of the tattoo with the R20 method, and the opposite half with 4 passes using PFD (R0 method); two were treated over half with a single pass and the opposite half with 4 passes using PFD (R0 method); and six treated over half with a single pass followed by PFD and the opposite half with a single pass alone. Blinded dermatologists rated tattoo fading at 1–3 months. Optical coherence tomography (OCT) imaging of whitening was performed in two tattoos. Results Topical PFD clinically resolved immediate whitening reactions within a mean 5 seconds (range 3–10 seconds). Tattoos treated with the R0 method demonstrated excellent fading in an average total treatment time of 5 minutes. Tattoo areas treated with the R0 method demonstrated equal fading compared to the R20 method, and improved fading compared to a single pass method. OCT imaging of whitening demonstrated epidermal and dermal hyper-reflective “bubbles” that dissipated until absent at 9–10 minutes after PFD application, and at 20 minutes without intervention. Conclusions Multiple-pass tattoo removal using PFD to deliver rapid sequential passes (R0 method) appears equally effective as the R20 method, in a total treatment time averaging 5 minutes, and more effective than single pass treatment. OCT-visualized whitening-associated “bubbles,” upon treatment with PFD, resolve twice as rapidly as spontaneous resolution. Lasers Surg. Med. 45: 76–80, 2013. © 2012 Wiley Periodicals, Inc.
- Published
- 2012
- Full Text
- View/download PDF
9. Elevated vancomycin trough is not associated with nephrotoxicity among inpatient veterans
- Author
-
Thuong Tran, Christopher J. Graber, Kavitha K. Prabaker, Matthew Bidwell Goetz, and Tamara Pratummas
- Subjects
Male ,medicine.medical_specialty ,Hospitals, Veterans ,Leadership and Management ,Assessment and Diagnosis ,Gastroenterology ,Nephrotoxicity ,Cohort Studies ,chemistry.chemical_compound ,Vancomycin ,Internal medicine ,Humans ,Medicine ,Dosing ,Care Planning ,Veterans Affairs ,Retrospective Studies ,Veterans ,Creatinine ,business.industry ,Health Policy ,Incidence (epidemiology) ,General Medicine ,Acute Kidney Injury ,Middle Aged ,Surgery ,Hospital medicine ,Discontinuation ,chemistry ,Female ,Fundamentals and skills ,business ,medicine.drug - Abstract
BACKGROUND: Vancomycin troughs of 15-20 mg/L are recommended in the treatment of invasive staphylococcal disease, higher levels than previously recommended. OBJECTIVE/SETTING: We sought to determine if there was an association between vancomycin trough and nephrotoxicity, defined as 0.5 mg/L or 50% increase in serum creatinine, at a large Veterans Affairs medical center. PATIENTS AND METHODS: We reviewed records of 348 inpatients at our institution who received ≥5 days of vancomycin during 2 time periods when vancomycin dosing protocols differed (May 2005-April 2006 and January 2007-December 2007). Potential risk factors for nephrotoxicity were collected prior to nephrotoxicity onset, and all patients with nephrotoxicity events occurring within 5 days of starting vancomycin were excluded. RESULTS: Overall incidence of nephrotoxicity was 31/348 patients (8.9%). A similar percentage of patients experienced nephrotoxicity in 2005-2006 versus 2007 (16/201 vs 15/147, respectively; P = 0.57), despite a rise in mean (9.7 mg/L in 2005-2006 vs 13.2 mg/L in 2007; P < 0.0001) and highest (11.8 mg/L in 2005-2006 vs 15.7 mg/L in 2007; P < 0.0001) vancomycin trough levels achieved. In a multivariate logistic regression model, only receipt of intravenous contrast dye was significantly associated with nephrotoxicity (OR 4.01, P < 0.001), though there was a trend toward an association between maximum vancomycin trough ≥15 mg/L and nephrotoxicity (OR 2.05, P = 0.082). Overall reversibility of nephrotoxicity either prior to or within 72 hours of vancomycin discontinuation was 77.8%. CONCLUSIONS: We conclude that nephrotoxicity, with higher trough levels occurring at ≥5 days of vancomycin therapy, was uncommon at our institution and typically reversible. Journal of Hospital Medicine 2012;. © 2011 Society of Hospital Medicine
- Published
- 2011
- Full Text
- View/download PDF
10. Histologic mimickers of mycosis fungoides: a review
- Author
-
Jag Bhawan and Kavitha K. Reddy
- Subjects
Clinicopathologic correlation ,medicine.medical_specialty ,Mycosis fungoides ,Pathology ,Skin Neoplasms ,Histology ,business.industry ,Eczema ,Dermatitis ,Anatomical pathology ,Dermatology ,Disease ,medicine.disease ,Peripheral T-cell lymphoma ,Pathology and Forensic Medicine ,Lymphoma ,Diagnosis, Differential ,Mycosis Fungoides ,Psoriasis ,Humans ,Medicine ,business ,Time to diagnosis - Abstract
Mycosis fungoides (MF) is a rare type of non-Hodgkin's lymphoma affecting the skin. Because MF develops slowly over several years and may have a variety of clinical presentations, including itchy patches, plaques or tumors that may be confused with common benign conditions such as eczema and psoriasis, the disease presents a diagnostic challenge. The average time to diagnosis varies but is frequently as long as 3 to 6 years. Skin biopsies frequently reveal non-specific features of several dermatoses; thus, histologic evaluation of the disease is also challenging. Importantly, various significant and/or benign conditions may mimic MF histologically and result in a misdiagnosis of MF. Here we review the reported histologic mimickers of MF and discuss both similar and differentiating features of each, in order to aid in more accurate interpretation of diagnostically challenging skin biopsies. Clinicopathologic correlation is ultimately essential to make accurate diagnosis of MF and its histologic mimickers.
- Published
- 2007
- Full Text
- View/download PDF
11. Photodetectors: Mid-Infrared Pyroresistive Graphene Detector on LiNbO3 (Advanced Optical Materials 4/2017)
- Author
-
Gopalan, Kavitha K., primary, Janner, Davide, additional, Nanot, Sebastien, additional, Parret, Romain, additional, Lundeberg, Mark B., additional, Koppens, Frank H. L., additional, and Pruneri, Valerio, additional
- Published
- 2017
- Full Text
- View/download PDF
12. Mid-Infrared Pyroresistive Graphene Detector on LiNbO3
- Author
-
Gopalan, Kavitha K., primary, Janner, Davide, additional, Nanot, Sebastien, additional, Parret, Romain, additional, Lundeberg, Mark B., additional, Koppens, Frank H. L., additional, and Pruneri, Valerio, additional
- Published
- 2016
- Full Text
- View/download PDF
13. Tunable Complete Optical Absorption in Multilayer Structures Including Ge2Sb2Te5without Lithographic Patterns
- Author
-
Mkhitaryan, Vahagn K., primary, Ghosh, Dhriti S., additional, Rudé, Miquel, additional, Canet-Ferrer, Josep, additional, Maniyara, Rinu Abraham, additional, Gopalan, Kavitha K., additional, and Pruneri, Valerio, additional
- Published
- 2016
- Full Text
- View/download PDF
14. Tunable Complete Optical Absorption in Multilayer Structures Including Ge2Sb2Te5without Lithographic Patterns
- Author
-
Dhriti Sundar Ghosh, Vahagn Mkhitaryan, Kavitha K. Gopalan, Josep Canet-Ferrer, Rinu Abraham Maniyara, Miquel Rudé, and Valerio Pruneri
- Subjects
Materials science ,business.industry ,Electromagnetic spectrum ,Physics::Optics ,Photodetector ,Metamaterial ,02 engineering and technology ,021001 nanoscience & nanotechnology ,01 natural sciences ,Atomic and Molecular Physics, and Optics ,Electronic, Optical and Magnetic Materials ,010309 optics ,Wavelength ,Resonator ,Optics ,Narrowband ,0103 physical sciences ,Optoelectronics ,Photonics ,0210 nano-technology ,business ,Absorption (electromagnetic radiation) - Abstract
Controlling the spectral transmission, reflection, and absorption properties of optical structures is of great interest for many applications in photonics. Particularly, perfect absorbers over a wide frequency (wavelength) range are desirable for thin-film thermal emitters, thermo-solar cells, photodetectors, and smart windows. Up to date, several mechanisms have been proposed to achieve nearly 100% absorption in various frequency ranges of the electromagnetic spectrum; starting from microwaves to near infrared (NIR) and visible. One of the first demonstrations of a structure that was absorbing with nearly 100% efficiency was proposed by Landy et al. in 2008,[1] where metamaterial resonator arrays were used to achieve narrowband and highly resonant absorption of GHz and THz waves. The narrowband character of the resonances can be an advantage when absorbers with high quality factor are required and wavelength selectivity is desirable. However, there are many applications that need broadband absorption. To this end great efforts have been made during the last decade, for instance by mixing multiple resonances in a many-fold resonator, which can lead to, e.g., dual band[2] or multiband[3-9] resonant absorption. Unfortunately fabrication of these structures requires sophisticated techniques such as micro- or nano-lithography, severely limiting their scalability and increasing the cost of the absorber.
- Published
- 2016
- Full Text
- View/download PDF
15. Topical perfluorodecalin resolves immediate whitening reactions and allows rapid effective multiple pass treatment of tattoos
- Author
-
Reddy, Kavitha K., primary, Brauer, Jeremy A., additional, Anolik, Robert, additional, Bernstein, Leonard, additional, Brightman, Lori, additional, Hale, Elizabeth, additional, Karen, Julie, additional, Weiss, Elliot, additional, and Geronemus, Roy G., additional
- Published
- 2012
- Full Text
- View/download PDF
16. Elevated vancomycin trough is not associated with nephrotoxicity among inpatient veterans
- Author
-
Prabaker, Kavitha K., primary, Tran, Thuong P.‐H., additional, Pratummas, Tamara, additional, Goetz, Matthew Bidwell, additional, and Graber, Christopher J., additional
- Published
- 2011
- Full Text
- View/download PDF
17. ChemInform Abstract: Synthesis and Pharmacological Investigation of Novel 4-(2-Methylphenyl)-1-Substituted-4H-[1,2,4]triazolo [4,3-a]quinazolin-5-ones as New Class of H1-Antihistaminic Agents.
- Author
-
Alagarsamy, V., primary, Rupeshkumar, M., additional, Kavitha, K., additional, Meena, S., additional, Shankar, D., additional, Siddiqui, A. A., additional, and Rajesh, R., additional
- Published
- 2009
- Full Text
- View/download PDF
18. Low-lying stepwise paths for ethylene 1,3-dipolar cycloadditions: A DFT study
- Author
-
Kavitha, K., primary and Venuvanalingam, P., additional
- Published
- 2005
- Full Text
- View/download PDF
19. Erythrocyte Lipid Peroxidation and Antioxidants in Gastric Cancer Patients
- Author
-
ARIVAZHAGAN, S., primary, KAVITHA, K., additional, and NAGINI, S., additional
- Published
- 1997
- Full Text
- View/download PDF
20. Isolation and evolutionary analysis of Australasian topotype of bluetongue virus serotype 4 from India
- Author
-
Reddy, Y. Vishnuvardhan, Susmitha, B., Patil, S., Krishnajyothi, Yadlapati, Putty, Kalyani, Ramakrishna, K.V., Sunitha, G., Devi, B.V., Kavitha, K., Deepthi, B., Krovvidi, S., Reddy, Y.N., Reddy, G. Hanmanth, Singh, K.P., Maan, Narender Singh, Hemadri, D., Maan, S., Mertens, P.P., Hegde, N.R., Rao, P.P., Reddy, Y. Vishnuvardhan, Susmitha, B., Patil, S., Krishnajyothi, Yadlapati, Putty, Kalyani, Ramakrishna, K.V., Sunitha, G., Devi, B.V., Kavitha, K., Deepthi, B., Krovvidi, S., Reddy, Y.N., Reddy, G. Hanmanth, Singh, K.P., Maan, Narender Singh, Hemadri, D., Maan, S., Mertens, P.P., Hegde, N.R., and Rao, P.P.
- Abstract
Bluetongue (BT) is a Culicoides-borne disease caused by several serotypes of bluetongue virus (BTV). Similar to other insect-borne viral diseases, distribution of BT is limited to distribution of Culicoides species competent to transmit BTV. In the tropics, vector activity is almost year long, and hence, the disease is endemic, with the circulation of several serotypes of BTV, whereas in temperate areas, seasonal incursions of a limited number of serotypes of BTV from neighbouring tropical areas are observed. Although BTV is endemic in all the three major tropical regions (parts of Africa, America and Asia) of the world, the distribution of serotypes is not alike. Apart from serological diversity, geography-based diversity of BTV genome has been observed, and this is the basis for proposal of topotypes. However, evolution of these topotypes is not well understood. In this study, we report the isolation and characterization of several BTV-4 isolates from India. These isolates are distinct from BTV-4 isolates from other geographical regions. Analysis of available BTV seg-2 sequences indicated that the Australasian BTV-4 diverged from African viruses around 3,500 years ago, whereas the American viruses diverged relatively recently (1,684 CE). Unlike Australasia and America, BTV-4 strains of the Mediterranean area evolved through several independent incursions. We speculate that independent evolution of BTV in different geographical areas over long periods of time might have led to the diversity observed in the current virus population.
- Full Text
- View/download PDF
21. Differential Expression of Hard Tissue Proteins in Hypomineralized Second Primary Molars in Comparison to Normal Teeth.
- Author
-
Jessica S, Sekar R, Ghosh S, Dhungel S, B K, Ramakrishnan M, Jh SF, Prasad M, I J, and Subramani S
- Subjects
- Humans, Dental Enamel Hypoplasia metabolism, Amelogenesis, Child, Electrophoresis, Gel, Two-Dimensional, Extracellular Matrix Proteins metabolism, Extracellular Matrix Proteins analysis, Dental Enamel metabolism, Child, Preschool, Female, Dental Enamel Proteins metabolism, Phosphoproteins, Sialoglycoproteins, Tooth, Deciduous metabolism, Molar metabolism
- Abstract
Objective: This study aims to identify the proteins in hypomineralized second primary molars (HSPMs) and correlate their function in Amelogenesis. HSPM is a qualitative defect of the enamel of the second primary molars with no clear etiology., Material and Methods: Total protein quantification was performed using the Bradford Protein Assay, followed by the electrophoretic separation of samples using 2D-Gel electrophoresis to identify the proteins., Results: The results from the Bradford Protein Assay unveiled a five-fold increase in the protein content in HSPM. Proteins such as Dentin sialo-phosphoprotein (DSPP), Keratin, type I, Serum Albumin, Anti-thrombin III, Alpha-1-Antitrypsin, Histone H3.2, Actin, Heat shock Protein, Vimentin, Desmoglein-3, Glyceraldehyde-3-phosphate dehydrogenase, Inosine-5'-monophosphate dehydrogenase 2, Zinc Alpha 2 glycoprotein, Lysozyme C, Prothrombin, Vit-D binding Protein, Apolipoprotein A-1, Defensin 1, Immunoglobulin Gamma, Immunoglobulin Kappa, and Alpha-Amylase were all upregulated (p < 0.05) in HSPM., Conclusion: This investigation conclusively demonstrates that HSPM-affected teeth have higher protein content than healthy teeth. The study also supports the theory of proteolytic inhibition attributed to reduced protease activity and heightened protease inhibitor activity., (© 2025 The Author(s). Clinical and Experimental Dental Research published by John Wiley & Sons Ltd.)
- Published
- 2025
- Full Text
- View/download PDF
22. Prevalence of non-communicable disease risk factors among nursing staff in a low and middle-income country: A cross-sectional digital survey-based study.
- Author
-
Dhanasekaran K, Lakshmanan G, Perumal V, Choudhary M, Chalga MS, Hote PK, Hariprasad R, Kumar V, Chacko S, Kumaresan K, and Swarnkar NK
- Subjects
- Humans, Cross-Sectional Studies, Male, Risk Factors, Female, Adult, Prevalence, Middle Aged, India epidemiology, Surveys and Questionnaires, Nursing Staff, Developing Countries, Noncommunicable Diseases epidemiology
- Abstract
Aim: To assess the prevalence of non-communicable disease risk factors among the nursing staff and educate them on prevention., Background: Nursing staff is integral to the Indian community healthcare systems. Recent studies report a high prevalence of non-communicable diseases in Indian nursing staff. Therefore, data on the prevalence of non-communicable disease risk factors among nursing staff are crucial for education on prevention., Design: A cross-sectional digital survey-based study., Method: We invited 4435 nursing staff to attend our online survey. We used a customized questionnaire for data collection, including a digitized version of the Community-Based Assessment Checklist form. A score of >4 was considered high risk and warranted screening., Result: Among 682 nursing staff who attended, 70% had never undergone screening for non-communicable diseases. The prevalence of non-communicable disease risk factors was significantly higher in male nursing staff. In addition, logistic regression analysis showed that age, tobacco and alcohol use, increased waist circumference, physical inactivity and family history of non-communicable diseases were significant risk factors among nursing staff., Conclusion: The study findings suggest that the nursing staff have suboptimal self-health concerns on non-communicable diseases. This situation warrants continued medical education, awareness campaigns on adopting a healthy lifestyle and health promotion., (© 2024 John Wiley & Sons Australia, Ltd.)
- Published
- 2024
- Full Text
- View/download PDF
23. High prevalence of "non-pathogenic" POLE mutation with poor prognosis in a cohort of endometrial cancer from South India.
- Author
-
Kuriakose S, Dhanasooraj D, Shiny PM, Shammy S, Sona VP, Manjula AA, Ramachandran A, Vijaykumar B, Susan N, Dinesan M, Sankar UV, Ramachandran K, and Sreedharan PS
- Subjects
- Humans, Female, India, Middle Aged, Retrospective Studies, Prognosis, Aged, Adult, Prevalence, Neoplasm Staging, Endometrial Neoplasms genetics, Endometrial Neoplasms pathology, Endometrial Neoplasms mortality, DNA Polymerase II genetics, Mutation, Poly-ADP-Ribose Binding Proteins genetics
- Abstract
Objective: The Cancer Genome Atlas (TCGA) project identified favorable prognosis regarding the ultra-mutated endometrial cancer (EC) subtype linked to polymerase epsilon gene (POLE) mutations. This study investigated POLE mutations in EC of Indian patients., Methods: This retrospective analytical study was conducted between January 2016 and January 2023 at the Government Medical College, Kozhikode, and the MVR Cancer Center, Kozhikode, Kerala. Sanger sequencing of POLE gene exons 9 and 13 in 151 EC patients was carried out to analyze the relationship between mutations and epidemiological factors, clinicopathologic features, and treatment outcomes., Results: Among 151 cases enrolled, 39 were unique POLE-mutated cases. Significant associations were high-grade tumors, myometrial invasion >50%, and Lymph-vascular space invasion (LVSI). The median follow-up was 40 months (95% confidence interval [CI], 34-46). A lower mean disease-specific survival (DSS) of 51.7 months (95% CI, 43.7-59.6) was noted in the POLE-mutated group compared with 72.11 months (95% CI, 67.60-76.62) for the POLE wild-type. A statistically significant hazard ratio (HR) of 2.683 for DSS in the POLE-mutated group was noted. In advanced stages (FIGO stages II-IV), a nine-fold HR for DSS and overall survival (OS) compared with POLE wild-type was identified. After controlling for treatment effects using Cox proportional HR, advanced-stage POLE-mutated tumors had a significantly higher HR of 8.67 for DSS compared with POLE-wild-type tumors of the same stage., Conclusion: This study identified a unique set of POLE mutations in Indian EC patients associated with poor prognosis, which were particularly pronounced in advanced stages. Advanced stage of presentation, type of POLE mutations, and possibly ethnicity are predictors of adverse outcomes in POLE-mutated EC. The present study highlights ethnicity as a determinant of phenotypic expression of genetic change., (© 2024 International Federation of Gynecology and Obstetrics.)
- Published
- 2024
- Full Text
- View/download PDF
24. Epilepsy with eyelid myoclonia with atonic seizures and generalized paroxysmal fast activity: A novel electroclinical phenotype associated with SETD1B pathogenic variant.
- Author
-
Ng VHL, Hart F, Kothur K, Buckley M, Harb C, and Gill D
- Subjects
- Humans, Electroencephalography, Eyelids pathology, Phenotype, Seizures genetics, Histone-Lysine N-Methyltransferase genetics, Epilepsy genetics, Epilepsy, Absence, Epilepsy, Generalized genetics, Myoclonus genetics
- Published
- 2024
- Full Text
- View/download PDF
25. Multidisciplinary collaborative consensus statement on the barriers and solutions to care access, patient and caregiver support, and clinical capacity and capability for patients with spasticity.
- Author
-
Patel A, Gellhorn A, Neerukonda K, and Kwasnica C
- Subjects
- Humans, United States, Muscle Spasticity drug therapy, Consensus, Delphi Technique, Caregivers, Health Services
- Abstract
Background: There is evidence that patients with spasticity are not receiving adequate care. Identifying the unmet needs of patients with spasticity is essential to develop services and treatment strategies to better support this population This is an effort to identify challenges related to treatment of spasticity and provide the springboard for the implementation of identified solutions., Objective: To identify the main barriers to spasticity care and identify potential solutions., Design: Delphi process., Setting: Expert panel., Participants: A total of 35 participants with diverse experience and knowledge related to spasticity care were invited and 29 attended an in-person 2022 Spasticity Summit hosted by the American Academy of Physical Medicine and Rehabilitation., Methods: The expert panel participated in a presummit survey to identify the main potential barriers to spasticity care. During the in-person meeting the panel initially worked in small groups and then as whole to reach consensus through the Delphi process. The panel also completed a postsummit survey., Results: Several barriers to spasticity care and potentials solutions were identified. Consensus was reached for the top three barriers and potential solutions (>50% and >75%, respectively). Top barriers included the need for a document listing all the challenges related to access of care for spasticity, increased caregiver and community awareness of spasticity, and education of clinicians regarding patient needs. Top solutions to barriers included increasing the number of providers who treat spasticity, enhancing patient and caregiver education, and developing and publishing a consensus guidance statement., Conclusions: Consensus was achieved on the top three barriers to spasticity care and potential solutions. The purpose of this analysis is to pave the way for further development of solutions to improve the care of patients with spasticity., (© 2023 American Academy of Physical Medicine and Rehabilitation.)
- Published
- 2024
- Full Text
- View/download PDF
26. ACE2 and TAS2R38 receptor expression in pediatric and adult patients in the nasal and oral cavity.
- Author
-
Franks ZG, Nandakumar K, Santhanam L, Lester L, Walsh JM, and Dalesio NM
- Abstract
Objective: To investigate differences in angiotensin-converting-enzyme-2 (ACE2) and bitter taste receptor (TAS2R38) expression between patient age groups and comorbidities to characterize the pathophysiology of coronavirus 19(COVID-19) pandemic. ACE2 is the receptor implicated to facilitate SARS-CoV-2 infections and levels of expression may correlate to the severity of COVID-19 infection. TAS2R38 has many non-gustatory roles in disease, with some evidence of severe COVID-19 disease in certain receptor phenotypes., Methods: We conducted a prospective cohort study and collected nasal and lingual tissue from healthy pediatric ( n = 22) and adult ( n = 25) patients undergoing general anesthesia for elective procedures. RNA isolation and qPCR were performed with primers targeting ACE2 and TAS2R38., Results: A total of 25 adult (52% male; 44% obese) and 22 pediatric (50% male; 36% obese) patients were enrolled, pediatric tissue had 43% more nasal ACE2 RNA expression than adults with a median fold change of 0.69 (IQR 0.37, 0.98) in adults and 0.99 (IQR 0.74, 1.43) in children ( p < .05). There were no differences between the age groups in ACE2 expression of lingual tissue ( p = .14) or TAS2R38 expression collected from either nasal ( p = 049) or lingual tissue ( p = .49). Stratifying for obesity yielded similar differences between nasal ACE2 expression between adults and children with median fold change of 0.56 (IQR 0.32, 0.87) in adults and 1.0 (IQR 0.82, 1.52) in children ( p < .05)., Conclusions: ACE2 receptor expression is higher in nasal tissue collected from children compared to adults, suggesting COVID-19 infectivity is more complicated than ACE2 and TAS2R38 mRNA expression., Level of Evidence: NA., Competing Interests: Jonathan M. Walsh reports educational consultant relationship with Smith & Nephew regarding Coblation technology. No direct conflict of interest for this project., (© 2024 The Authors. Laryngoscope Investigative Otolaryngology published by Wiley Periodicals LLC on behalf of The Triological Society.)
- Published
- 2024
- Full Text
- View/download PDF
27. Comparison between the demographic shift clinical severity and outcome of the first two waves of COVID-19 in pregnancy in a tertiary hospital in India.
- Author
-
Lenin A, Abraham K, David LS, Tirkey RS, Mani T, Jasmine S, and Sathyendra S
- Subjects
- Pregnancy, Infant, Newborn, Humans, Female, Cesarean Section, Retrospective Studies, SARS-CoV-2, Tertiary Care Centers, India epidemiology, Perinatal Mortality, Pregnancy Outcome, COVID-19 epidemiology, Pregnancy Complications, Infectious diagnosis, Pregnancy Complications, Infectious epidemiology
- Abstract
Objective: To study and compare the maternal and neonatal outcomes of COVID-19 in pregnancy during the two waves of the pandemic in India., Methods: This observational, retrospective cohort study on pregnant women with SARS-CoV-2 infection was conducted in a 2700-bed tertiary referral center in South India from March 1, 2020 to June 30 2021. The clinical presentation, severity, and maternal and neonatal outcomes of COVID-19 were compared between the two waves., Results: A total of 623 pregnant women tested positive for SARS-CoV-2 infection in our institute; 379 (60.8%) were diagnosed during the first wave and 244 (39.2%) in the second wave. Most of the affected women (81.1%) were in their third trimester. Maternal mortality rate was 823 per 100 000 live births. Composite maternal outcome (increasing requirement for ventilation, pulmonary embolism, disease progression) were more pronounced during the second wave (2.1% vs 6.1%). Between the two waves, both maternal (1 vs 3; P = 0.162) and perinatal (3.2% vs 6.7%; P = 0.065) deaths were higher during the second wave. The cesarean section rate was high during the first wave (48% vs 32.4%; P < 0.001). Preterm births were comparable between the two waves (19.5% vs 22%; P < 0.500)., Conclusion: The women presented with more severe illness during the second wave of COVID-19. There was higher perinatal mortality, but the maternal mortality was similar between the two waves., (© 2023 International Federation of Gynecology and Obstetrics.)
- Published
- 2023
- Full Text
- View/download PDF
28. Successes and Opportunities during the Pandemic: Reflections and Revelations from a Vaccine Development Perspective.
- Author
-
Heaton PM, Palaniappan K, Stona AC, Vogel S, and Lim JCW
- Subjects
- Humans, Singapore epidemiology, Congresses as Topic, Pandemics prevention & control, Vaccines
- Abstract
The Centre of Regulatory Excellence (CoRE) launched an annual lecture series in 2021 in Singapore to honor the memory of the late Professor Sir Alasdair Breckenridge, CoRE's founding Chair, and foster dialogue on global biomedical and regulatory perspectives, challenges, and advances. The 2022 Sir Alasdair Breckenridge Lecture "Success and Opportunities in the Pandemic" was delivered by Dr Penny M Heaton, former CEO of the Bill & Melinda Gates Foundation Research Institute and current Global Therapeutics Lead for Vaccines at Johnson & Johnson. Dr Heaton highlighted key lessons on the importance of trust, collaboration, and transparency in the context of health care and vaccine production., (© 2023 The Authors. Clinical Pharmacology & Therapeutics published by Wiley Periodicals LLC on behalf of American Society for Clinical Pharmacology and Therapeutics.)
- Published
- 2023
- Full Text
- View/download PDF
29. Reimagining Critical Care Delivery Mechanisms in Global Surgery: The Frontiers of Telemedicine.
- Author
-
Ehsan AN, Ranganathan K, and Raghavendran K
- Subjects
- Humans, Delivery of Health Care, Critical Care, Telemedicine
- Published
- 2023
- Full Text
- View/download PDF
30. Vaginal birth as compared with cesarean section in preterm twins-Experience from a tertiary center of a middle-income country.
- Author
-
Priyanka P, Abraham K, Navneetham P, Abraham A, and Regi A
- Subjects
- Infant, Newborn, Pregnancy, Humans, Female, Prospective Studies, Delivery, Obstetric, Parturition, Pregnancy, Twin, Gestational Age, Retrospective Studies, Cesarean Section, Premature Birth epidemiology
- Abstract
Objectives: To evaluate the mode of birth in early-preterm, late-preterm, and near-term twins as well as to compare the maternal and neonatal outcomes of each group following vaginal birth (VB) and lower-segment cesarean section (LSCS)., Methods: A prospective cohort study was conducted of 100 twin pregnancies in a tertiary center between 2018 and 2019. Deliveries were allocated into the following three gestational age groups (weeks ± days) and compared: (1) early-preterm (28 to 31 ± 6), (2) late-preterm (32 to 35 ± 6), and (3) near-term (≥36 weeks)., Results: The proportion of VB and LSCS were similar when early-preterm twins (P = 0.766; relative risk [RR], 1.08) and late-preterm twins (P = 0.071; RR, 1.21) were compared separately with near-term twins. Perinatal outcomes did not differ between VB and LSCS within each gestational age group. When compared with the near-term group, the early-preterm group had more hypoglycemia (P < 0.001), hyperbilirubinemia (P < 0.001), respiratory distress (P < 0.001), low APGAR scores (P < 0.001), and death (P < 0.001) irrespective of the mode of birth. The late-preterm group had lower morbidity and mortality (P = 0.227). Postpartum hemorrhage and blood transfusion were similar between the groups., Conclusion: The proportion of VB and LSCS and associated maternal and neonatal outcomes did not differ in twins of different gestational ages. The data provide reassurance to practitioners to perform vaginal delivery in preterm twins., (© 2022 International Federation of Gynecology and Obstetrics.)
- Published
- 2023
- Full Text
- View/download PDF
31. Multicenter study of pediatric Epstein-Barr virus-negative monomorphic post solid organ transplant lymphoproliferative disorders.
- Author
-
Afify ZAM, Taj MM, Orjuela-Grimm M, Srivatsa K, Miller TP, Edington HJ, Dalal M, Robles J, Ford JB, Ehrhardt MJ, Ureda TJ, Rubinstein JD, McCormack S, Rivers JM, Chisholm KM, Kavanaugh MK, Bukowinski AJ, Friehling ED, Ford MC, Reddy SN, Marks LJ, Smith CM, and Mason CC
- Subjects
- Child, Humans, Male, Female, Herpesvirus 4, Human, Prospective Studies, Retrospective Studies, Epstein-Barr Virus Infections complications, Epstein-Barr Virus Infections epidemiology, Lymphoproliferative Disorders diagnosis, Lymphoproliferative Disorders etiology, Lymphoma, Non-Hodgkin complications, Lymphoma, Large B-Cell, Diffuse pathology, Myeloproliferative Disorders complications, Organ Transplantation adverse effects
- Abstract
Background: Pediatric Epstein-Barr virus-negative monomorphic post solid organ transplant lymphoproliferative disorder [EBV(-)M-PTLD] comprises approximately 10% of M-PTLD. No large multi-institutional pediatric-specific reports on treatment and outcome are available., Methods: A multi-institutional retrospective review of solid organ recipients diagnosed with EBV(-)M-PTLD aged ≤21 years between 2001 and 2020 in 12 centers in the United States and United Kingdom was performed, including demographics, staging, treatment, and outcomes data., Results: Thirty-six patients were identified with EBV(-)M-PTLD. Twenty-three (63.9%) were male. Median age (range) at transplantation, diagnosis of EBV(-)M-PTLD, and interval from transplant to PTLD were 2.2 years (0.1-17), 14 years (3.0-20), and 8.5 years (0.6-18.3), respectively. Kidney (n = 17 [47.2%]) and heart (n = 13 [36.1%]) were the most commonly transplanted organs. Most were Murphy stage III (n = 25 [69.4%]). Lactate dehydrogenase was elevated in 22/34 (64.7%) and ≥2 times upper limit of normal in 11/34 (32.4%). Pathological diagnoses included diffuse large B-cell lymphoma (n = 31 [86.1%]) and B-non-Hodgkin lymphoma (B-NHL) not otherwise specified (NOS) (n = 5 [13.9%]). Of nine different regimens used, the most common were: pediatric mature B-NHL-specific regimen (n = 13 [36.1%]) and low-dose cyclophosphamide, prednisone, and rituximab (n = 9 [25%]). Median follow-up from diagnosis was 3.0 years (0.3-11.0 years). Three-year event-free survival (EFS) and overall survival (OS) were 64.8% and 79.9%, respectively. Of the seven deaths, six were from progressive disease., Conclusions: EFS and OS were comparable to pediatric EBV(+) PTLD, but inferior to mature B-NHL in immunocompetent pediatric patients. The wide range of therapeutic regimens used directs our work toward developing an active multi-institutional registry to design prospective studies., Plain Language Summary: Pediatric Epstein-Barr virus-negative monomorphic post solid organ transplant lymphoproliferative disorders (EBV(-)M-PTLD) have comparable outcomes to EBV(+) PTLD, but are inferior to diffuse large B-cell lymphoma in immunocompetent pediatric patients. The variety of treatment regimens used highlights the need to develop a pediatric PTLD registry to prospectively evaluate outcomes. The impact of treatment regimen on relapse risk could not be assessed because of small numbers. In the intensive pediatric B-non-Hodgkin lymphoma chemoimmunotherapy group, 11 of 13 patients remain alive in complete remission after 0.6 to 11 years., (© 2022 American Cancer Society.)
- Published
- 2023
- Full Text
- View/download PDF
32. A Feasible Multimodal Photoacoustic Imaging Approach for Evaluating the Clinical Symptoms of Inflammatory Arthritis.
- Author
-
Rajasekar B, Nirmala P, Bhuvaneswari P, Radhika R, Asha S, Kavitha KR, and Belay SS
- Subjects
- Humans, Joints diagnostic imaging, Magnetic Resonance Imaging, Oxygen, Positron-Emission Tomography, Arthritis, Rheumatoid diagnostic imaging, Photoacoustic Techniques
- Abstract
Numerous traditional medical imaging methods, including computed tomography with X-rays, positron emission tomography (PET), and magnetic resonance imaging (MRI), are utilized frequently in medical settings to screen for illnesses, diagnose patients, and track the effectiveness of treatments. When examining bone protrusions, CT is preferred over MRI for scanning connective tissue. Although the picture quality of PET is inferior to that of CT and MR, it is outstanding for detecting the molecular markers and metabolic functions of illnesses. To give high-resolution structural pictures and improved ailment sensitivity and specificity within another image, multimodal data and substantial therapeutic influence on advanced diagnostics and therapeutics have been used. The goal was to evaluate the clinical significance of multimodal photoacoustic/ultrasound (PA/US) articular imaging scoring, a cutting-edge image technique that may show the microvessels and oxygen levels of rheumatoid arthritis-related inflamed joints (RA). The PA/US imaging technology analyzed seven tiny joints. The PA and power Doppler (PD) impulses were semiquantified using a 0-3 grading scale, and the averages of the PA and PD scores for the seven joints are computed. Three PA+SO
2 types were found determined by the relative oxygen levels (SO2 ) measurements of the affected joints. Researchers evaluated the relationships between the disease activity ratings and the PA/US imaging ratings. The PA scores and medical ratings that reflect the extent of the pain have strong relationships with each other, as do the PA+SO2 combinations. PA may be clinically useful in assessing RA. Thus, the research evaluated the clinical symptoms of inflammatory arthritis using a multimodal photoacoustic image process., Competing Interests: The authors declare that there is no conflict of interest regarding the publication of this article., (Copyright © 2022 B. Rajasekar et al.)- Published
- 2022
- Full Text
- View/download PDF
33. An Ideal Approach for Enhancing 5-Fluorouracil Anticancer Efficacy by Nanoemulsion for Cytotoxicity against a Human Hepatoma Cell Line (HepG2 Cells).
- Author
-
Mohamed JMM, Ahamad F, El-Sherbiny M, Ebrahim HA, Eladl MA, Dawood AF, Khader STSA, Kavitha K, and Teressa DM
- Subjects
- Cell Line, Tumor, Fluorouracil pharmacology, Hep G2 Cells, Humans, Particle Size, Carcinoma, Hepatocellular drug therapy, Liver Neoplasms drug therapy, Nanoparticles chemistry
- Abstract
The core objectives of the research were to prepare 5-fluorouracil nanoemulsion (FU-NE) and to evaluate the physiochemical properties and to study the i n vitro antiproliferation in HepG2 cell lines. The physiochemical parameters determined were compatibility, particle size (PS), polydispersity index (PDI), zeta potential (ZP), density, surface tension (ST), pH, viscosity, in vitro release of FU, cytotoxicity, and apoptosis study. The prepared FU-NE3 was stable, sterile, and homogeneous. On the HepG2 (120 μ g.mL
-1 ) cells, in vitro cytotoxicity was obtained at IC50 concentration. Apoptosis examination by AO/EBand Hoechst staining shows that the majority of cell demise was caused by apoptosis, with a tiny fraction of necrosis. Hence, this investigation concluded that the developed FU-NE has now desirable characteristics for drug delivery to the cancer cell and may be screened for the in vivo colorectal anticancer activity., Competing Interests: The authors declare that there are no conflicts of interest., (Copyright © 2022 Jamal Moideen Muthu Mohamed et al.)- Published
- 2022
- Full Text
- View/download PDF
34. Phyllanthin inhibits MOLT-4 leukemic cancer cell growth and induces apoptosis through the inhibition of AKT and JNK signaling pathway.
- Author
-
Wang H, Chinnathambi A, Alahmadi TA, Alharbi SA, Veeraraghavan VP, Krishna Mohan S, Hussain S, Ramamoorthy K, and Rengarajan T
- Subjects
- Cell Line, Tumor, Humans, Leukemia drug therapy, Leukemia pathology, Apoptosis drug effects, Cell Proliferation drug effects, Leukemia metabolism, Lignans pharmacology, MAP Kinase Kinase 4 metabolism, Proto-Oncogene Proteins c-akt metabolism, Signal Transduction drug effects
- Abstract
Among cancers, leukemia is a multistep progression that involves genetic modifications of normal hematopoietic progenitor cells to cancerous cells. In recent times, leukemia cases and their mortality rate have increased rapidly. Therefore, the immense need for a therapeutic approach is crucial that can control this type of cancer. Phyllanthin is a lignan compound constituent from the Phyllanthus species and has numerous beneficial effects as a dietary component. The present study aims to determine the impact of phyllanthin on the MOLT-4 cytotoxic effect. MOLT-4 cells and MS-5 cells were cultured at different concentrations of phyllanthin (5, 10, 25, 50, 75, and 100 μM/ml), and the viability was assessed by the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide method. The level of reactive oxygen species, the membrane potential of mitochondria, apoptosis by 2',7'-dichlorofluorescin-diacetate (DCF-DA), rhodamine, acridine orange (AO)/ethidium bromide (EB), 4',6-diamidino-2-phenylindole (DAPI)/propidium iodide (PI) staining, gene expression of signaling molecules, and protein levels were assessed by reverse-transcription polymerase chain reaction and western blot analysis. Phyllanthin did not show toxicity toward MS-5 cells and significantly decreased the cell viability of MOLT-4 cells with an IC
50 value of 25 µM/ml. Also, phyllanthin induced the production of reactive oxygen species and led to the loss of mitochondrial membrane potential. AO/EB and DAPI/PI staining fluorescent image confirmed the induction of apoptosis by phyllanthin treatment. The messenger RNA (mRNA) expression of cell cycle regulator cyclin D1, antiapoptotic gene Bcl-2, NF-κB, and TNF-α decreased, but the proapoptotic Bax mRNA expression was increased. The phosphorylated protein levels of p-PI3K1/2, p-ERK1/2, and p-AKT were decreased, whereas the levels of p-p38 and p-JNKT1/2 increased. Our results confirmed that phyllanthin inhibits the MOLT-4 cells, increases apoptosis, and inhibits MOLT-4 migration and cell invasion. Therefore, phyllanthin can be used as a potential target for leukemia treatment., (© 2021 Wiley Periodicals LLC.)- Published
- 2021
- Full Text
- View/download PDF
35. Improved automatic detection of herpesvirus secondary envelopment stages in electron microscopy by augmenting training data with synthetic labelled images generated by a generative adversarial network.
- Author
-
Shaga Devan K, Walther P, von Einem J, Ropinski T, A Kestler H, and Read C
- Subjects
- Algorithms, Cytomegalovirus metabolism, Herpesviridae Infections virology, Humans, Machine Learning, Microscopy, Electron, Transmission, Neural Networks, Computer, Virion metabolism, Capsid ultrastructure, Cytomegalovirus ultrastructure, Deep Learning, Herpesviridae Infections diagnostic imaging, Image Processing, Computer-Assisted methods, Virion ultrastructure
- Abstract
Detailed analysis of secondary envelopment of the herpesvirus human cytomegalovirus (HCMV) by transmission electron microscopy (TEM) is crucial for understanding the formation of infectious virions. Here, we present a convolutional neural network (CNN) that automatically recognises cytoplasmic capsids and distinguishes between three HCMV capsid envelopment stages in TEM images. 315 TEM images containing 2,610 expert-labelled capsids of the three classes were available for CNN training. To overcome the limitation of small training datasets and thus poor CNN performance, we used a deep learning method, the generative adversarial network (GAN), to automatically increase our labelled training dataset with 500 synthetic images and thus to 9,192 labelled capsids. The synthetic TEM images were added to the ground truth dataset to train the Faster R-CNN deep learning-based object detector. Training with 315 ground truth images yielded an average precision (AP) of 53.81% for detection, whereas the addition of 500 synthetic training images increased the AP to 76.48%. This shows that generation and additional use of synthetic labelled images for detector training is an inexpensive way to improve detector performance. This work combines the gold standard of secondary envelopment research with state-of-the-art deep learning technology to speed up automatic image analysis even when large labelled training datasets are not available., (© 2020 John Wiley & Sons Ltd.)
- Published
- 2021
- Full Text
- View/download PDF
36. Anticancer effect of purified polysaccharide from marine clam Donax variabilis on A549 cells.
- Author
-
Sahayanathan GJ, Padmanaban D, Raja K, and Chinnasamy A
- Subjects
- A549 Cells, Animals, Cell Cycle Checkpoints, Humans, Spectroscopy, Fourier Transform Infrared, Bivalvia, Polysaccharides pharmacology
- Abstract
The marine invertebrates are one of the main leads to the derivation of anticancer compounds. The present investigation was to explore the anticancer effect of a potentially active polysaccharide fraction from marine clam Donax variabilis on human lung cancer cells (A549). A polysaccharide was purified from the whole tissue of D. variabilis by GFC and characterized by FT-IR and NMR spectroscopy. Subsequently, fraction 2.1 (F2.1) showed a significant inhibitory effect on A549 cells (p < .001) with cellular, nuclear, and apoptotic morphological changes along with DNA damage. Although, F2.1 treatment exhibit the cell cycle arrest in S-phase through the downregulation of cell cycle regulators such as Cyclin A and cdk2 and regulate ROS-induced mitochondrial-mediated apoptosis in A549 cells by an increased level of proapoptotic molecules such as Bax, Cyt-c, Cleaved caspase-3 and 9, and decreased the level of Bcl-2. All data were statistically evaluated by one-way ANOVA and a post hoc analysis with Dunnett testing. Together, purified polysaccharide fraction from marine clam could be a new source of the natural anticancer agent against lung cancer. PRACTICAL APPLICATIONS: Over the decades, a lot of anticancer drugs were designed from plant sources for therapies against various diseases. This was an attempt to isolate a novel anticancer agent from animal sources. Most of the marine mollusks are nutritionally rich and with some potent bioactive compounds. Donax variabilis is an edible marine clam, which was consumed as food among people where live in coastal regions. In the present investigation, the D. variabilis was chosen to isolate active polysaccharide fraction against lung cancer cells. Based on our findings, the purified polysaccharide fraction may be utilized as sources of natural bioactive agents in cancer prevention., (© 2020 Wiley Periodicals LLC.)
- Published
- 2020
- Full Text
- View/download PDF
37. Robotic radical hysterectomy for stage 1B1 cervical cancer: A case series of survival outcomes from a leading UK cancer centre.
- Author
-
Patel H, Madhuri K, Rockell T, Montaser R, Ellis P, Chatterjee J, Butler-Manuel S, and Tailor A
- Subjects
- Female, Humans, Hysterectomy, Neoplasm Staging, Retrospective Studies, United Kingdom, Laparoscopy, Robotic Surgical Procedures, Uterine Cervical Neoplasms surgery
- Abstract
Background: We present the largest UK single institute robotic radical hysterectomy (RRH) case series for the management of cervical cancer (CC)., Methods: Data were collected on women who had a RRH as primary treatment for stage 1b1 CC between December 2009 and December 2018., Results: Ninty women had a robotic hysterectomy. Five-year follow-up data were available for 30%. The disease-free survival at 5 years was 89.6%. Overall survival at 3 and 5 years for death from any cause was 96.1% and 91.4%, respectively. The overall 5-year survival for death from disease only was 92.8%. Overall survival by tumour size alone showed that women with tumours less than 2 cm had a 98.3% 5-year survival compared to 83.4% for tumour size greater than 2 cm. Irrespective of tumour size, those that had no evidence of lymphovascular space invasion had a 100% 5-year survival., Conclusion: Our preliminary data supports the oncological safety of RRH in a selective cohort of patients with stage 1b1 CC., (© 2020 John Wiley & Sons, Ltd.)
- Published
- 2020
- Full Text
- View/download PDF
38. Sixty-eight consecutive patients assessed for COVID-19 infection: Experience from a UK Regional infectious diseases Unit.
- Author
-
Easom N, Moss P, Barlow G, Samson A, Taynton T, Adams K, Ivan M, Burns P, Gajee K, Eastick K, and Lillie PJ
- Subjects
- Adolescent, Adult, Aged, Anti-Infective Agents therapeutic use, Betacoronavirus, COVID-19, Child, Child, Preschool, Coronavirus Infections drug therapy, Female, Humans, Infant, Infant, Newborn, Male, Middle Aged, Pandemics, Pneumonia, Viral drug therapy, SARS-CoV-2, United Kingdom, Young Adult, Coronavirus Infections diagnosis, Fever virology, Pneumonia, Viral diagnosis
- Abstract
Background: Assessment of possible infection with SARS-CoV-2, the novel coronavirus responsible for COVID-19 illness, has been a major activity of infection services since the first reports of cases in December 2019., Objectives: We report a series of 68 patients assessed at a Regional Infection Unit in the UK., Methods: Between 29 January 2020 and 24 February 2020, demographic, clinical, epidemiological and laboratory data were collected. We compared clinical features between patients not requiring admission for clinical reasons or antimicrobials with those assessed as needing either admission or antimicrobial treatment., Results: Patients assessed were aged from 0 to 76 years; 36/68 were female. Peaks of clinical assessments coincided with updates to the case definition for suspected COVID-19. Microbiological diagnoses included SARS-CoV-2, mycoplasma pneumonia, influenza A, non-SARS/MERS coronaviruses and rhinovirus/enterovirus. Nine of sixty-eight received antimicrobials, 15/68 were admitted, 5 due to inability to self-isolate. Patients requiring admission on clinical grounds or antimicrobials (14/68) were more likely to have fever or raised respiratory rate compared to those not requiring admission or antimicrobials., Conclusions: The majority of patients had mild illness, which did not require clinical intervention. This finding supports a community testing approach, supported by clinicians able to review more unwell patients. Extensions of the epidemiological criteria for the case definition of suspected COVID-19 lead to increased screening intensity; strategies must be in place to accommodate this in time for forthcoming changes as the epidemic develops., (© 2020 The Authors. Influenza and Other Respiratory Viruses Published by John Wiley & Sons Ltd.)
- Published
- 2020
- Full Text
- View/download PDF
39. A community-based, cross-sectional study of hrHPV DNA self-sampling-based cervical cancer screening in rural Karnataka, India.
- Author
-
Adsul P, Srinivas V, Gowda S, Nayaka S, Pramathesh R, Chandrappa K, Khan A, Jayakrishna P, and Madhivanan P
- Subjects
- Adult, Cross-Sectional Studies, DNA, Viral genetics, Early Detection of Cancer methods, Female, Humans, India, Mass Screening methods, Mass Screening statistics & numerical data, Middle Aged, Papillomavirus Infections epidemiology, Pregnancy, Prevalence, Surveys and Questionnaires, Uterine Cervical Neoplasms diagnosis, Uterine Cervical Neoplasms virology, Papillomavirus Infections diagnosis, Vaginal Smears methods
- Abstract
Objective: To examine the feasibility of implementing a high-risk HPV (hrHPV) DNA-based screening program for cervical cancer and the prevalence of hrHPV DNA-positive women in a community setting in rural India., Methods: A cross-sectional study was conducted at the community level in the Hunsur taluk of the Mysore district from January to August 2016. Cervical cancer screening was conducted with self-collected vaginal samples that were analyzed using the Hybrid Capture 2 (HC2) assay (Qiagen, USA)., Results: The majority of participants were aged 30-39 years, with no formal schooling, from a lower caste, and lived below an annual household income of US$1499. After group health education and one-on-one counseling, a total of 473 women underwent self-sampling. Of these, 36 (7.6%) were positive for hrHPV and only 24 (66.6%) underwent follow-up diagnostic triaging. Cancer was detected in two women, who were referred to appropriate healthcare facilities for further treatment., Conclusion: Implementation of hrHPV DNA-based screening tests using self-sampling can be feasible in rural settings in India. However, substantial resources are required for providing health education and one-on-one counseling to inform asymptomatic women about the benefits of testing and, more importantly, to improve compliance with follow-up., (© 2019 International Federation of Gynecology and Obstetrics.)
- Published
- 2019
- Full Text
- View/download PDF
40. Circular RNA Profiling by Illumina Sequencing via Template-Dependent Multiple Displacement Amplification.
- Author
-
Guria A, Velayudha Vimala Kumar K, Srikakulam N, Krishnamma A, Chanda S, Sharma S, Fan X, and Pandi G
- Subjects
- Animals, Arabidopsis genetics, Genome genetics, Humans, Mice, MicroRNAs genetics, Molecular Sequence Annotation, Oryza genetics, RNA isolation & purification, RNA, Circular, Computational Biology, Gene Expression Profiling methods, RNA genetics, RNA Splicing genetics
- Abstract
Circular RNAs (circRNAs) are newly discovered incipient non-coding RNAs with potential roles in disease progression in living organisms. Significant reports, since their inception, highlight the abundance and putative functional roles of circRNAs in every organism checked for, like O. sativa , Arabidopsis , human, and mouse. CircRNA expression is generally less than their linear mRNA counterparts which fairly explains the competitive edge of canonical splicing over non-canonical splicing. However, existing methods may not be sensitive enough for the discovery of low-level expressed circRNAs. By combining template-dependent multiple displacement amplification (tdMDA), Illumina sequencing, and bioinformatics tools, we have developed an experimental protocol that is able to detect 1,875 novel and known circRNAs from O. sativa . The same method also revealed 9,242 putative circRNAs in less than 40 million reads for the first time from the Nicotiana benthamiana whose genome has not been fully annotated. Supported by the PCR-based validation and Sanger sequencing of selective circRNAs, our method represents a valuable tool in profiling circRNAs from the organisms with or without genome annotation.
- Published
- 2019
- Full Text
- View/download PDF
41. Water channel activity of putative aquaporin-6 present in Aedes aegypti.
- Author
-
Sreedharan S and Sankaranarayanan K
- Subjects
- Animals, Aquaporin 6 genetics, Biological Transport genetics, Biological Transport physiology, Cloning, Molecular, HEK293 Cells, Humans, Insect Proteins genetics, Water, Aedes metabolism, Aquaporin 6 metabolism, Insect Proteins metabolism
- Abstract
Aquaporins (AQPs) are integral membrane channels that facilitate the bidirectional transport of water and sometimes other small solutes across biological membranes. AQPs are important in mediating environmental adaptations in mosquitoes and are considered as a novel target for the development of effective insecticides against mosquitoes. Here, we expressed Aedes aegypti AQP6 ( AaAQP6) in human embryonic kidney (HEK) 293 cells and analyzed the water permeability by a conventional swelling assay, that is, a real-time change in cell size corresponding to the cell swelling induced by hyposmotic solution. The swelling assay revealed that AaAQP6 is a mercury-sensitive water channel. Gene expression studies showed that AaAQP6 is highly expressed in the pupae than other developmental stages. Heterologous expression of AaAQP6 in HEK cell was mainly observed intracellularly suggesting AaAQP6 possibly could be a subcellular water channel and may play an osmoregulatory function in the pupae of A. aegypti., (© 2018 Wiley Periodicals, Inc.)
- Published
- 2019
- Full Text
- View/download PDF
42. Use of hyaluronidase as an adjunct to local anaesthetic eye blocks to reduce intraoperative pain in adults.
- Author
-
Rüschen H, Aravinth K, Bunce C, and Bokre D
- Subjects
- Adult, Anesthesia, Local methods, Humans, Pain Measurement, Patient Satisfaction, Randomized Controlled Trials as Topic, Analgesia methods, Analgesics administration & dosage, Anesthetics, Local administration & dosage, Hyaluronoglucosaminidase administration & dosage, Intraoperative Complications prevention & control, Pain, Procedural prevention & control
- Abstract
Background: Hyaluronidase has been used over many decades as an adjunct to local anaesthetic solution to improve the speed of onset of eye blocks and to provide better akinesia and analgesia. With the evolution of modern eye surgery techniques, fast onset and akinesia are not essential requirements anymore. The assumption that the addition of hyaluronidase to local anaesthetic injections confers better analgesia for the patient needs to be examined. There has been no recent systematic review to provide evidence that hyaluronidase actually improves analgesia., Objectives: To ascertain if adding hyaluronidase to local anaesthetic solutions for use in ophthalmic anaesthesia in adults results in a reduction of perceived pain during the operation and to assess harms, participant and surgical satisfaction, and economic impact., Search Methods: We carried out systematic searches in Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE, Embase, and four other databases in June 2017. We searched the trial registers at www.ISRCTN.com, ClinicalTrials.gov and www.clinicaltrialsregister.eu for relevant trials. We imposed no language restrictions., Selection Criteria: We included randomized controlled trials (RCTs) that evaluated the effect of hyaluronidase on pain experienced by adults during intraocular surgery using a rating scale., Data Collection and Analysis: Two review authors (HR and KA) independently extracted data and assessed methodological quality using standard procedures as expected by Cochrane., Main Results: We included seven trials involving 500 participants that studied the effect of hyaluronidase on intraoperative pain. Four of the seven trials with 289 participants reported the primary outcome in a dichotomous manner, and we proceeded to meta-analyse the findings which showed a moderate heterogeneity that could not be explained (I
2 = 41% ). The pooled risk ratio (RR) for these four trials was 0.83 with the 95% confidence interval ranging from 0.48 to 1.42. The reduction in intraoperative pain scores in the hyaluronidase group were not statistically significant. Among the three trials that reported the primary outcome in a continuous manner, the presence of missing data made it difficult to conduct a meta-analysis. To further explore the data, we imputed standard deviations for the other studies from another included RCT (Sedghipour 2012). However, this resulted in substantial heterogeneity between study estimates (I² = 76% ). The lack of reported relevant data in two of the three remaining trials made it difficult to assess the direction of effect in a clinical setting.Overall, there was no statistical difference regarding the intraoperative reduction of pain scores between the hyaluronidase and control group. All seven included trials had a low risk of bias.According to GRADE, we found the quality of evidence was low and downgraded the trials for serious risk of inconsistency and imprecision. Therefore, the results should be analysed with caution.Participant satisfaction scores were significantly higher in the hyaluronidase group in two high quality trials with 122 participants. Surgical satisfaction was also superior in two of three high quality trials involving 141 participants. According to GRADE, the quality of evidence was moderate for participant and surgical satisfaction as the trials were downgraded for imprecision due to the small sample sizes. The risk of bias in these trials was low.There was no reported harm due to the addition of hyaluronidase in any of the studies. No study reported on the cost of hyaluronidase in the context of eye surgery., Authors' Conclusions: The effects of adding hyaluronidase to local anaesthetic fluid on pain outcomes in people undergoing eye surgery are uncertain due to the low quality of evidence available. A well designed RCT is required to address inconsistency and imprecision among the studies and to determine the benefit of hyaluronidase to improve analgesia during eye surgery. Participant and surgical satisfaction is higher with hyaluronidase compared to the control groups, as demonstrated in moderate quality studies. There was no harm attributed to the use of hyaluronidase in any of the studies. Considering that harm was only rarely defined as an outcome measure, and the overall small number of participants, conclusions cannot be drawn about the incidence of harmful effects of hyaluronidase. None of the studies undertook cost calculations with regards to use of hyaluronidase in local anaesthetic eye blocks.- Published
- 2018
- Full Text
- View/download PDF
43. The health-related quality of life of children, adolescents, and young adults with neurofibromatosis type 1 and their families: Analysis of narratives.
- Author
-
Draucker CB, Nutakki K, Varni JW, and Swigonski NL
- Subjects
- Adaptation, Psychological, Adolescent, Adult, Child, Child, Preschool, Female, Humans, Infant, Male, Middle Aged, Psychometrics, Stress, Psychological, Surveys and Questionnaires, Young Adult, Neurofibromatosis 1 psychology, Parents psychology, Quality of Life psychology
- Abstract
Purpose: Provide an in-depth description of the health-related quality of life (HRQoL) in youth diagnosed with neurofibromatosis type 1 (NF1) and their families., Design and Methods: Data were drawn from qualitative interviews conducted for a larger study aimed at developing the Pediatric Quality of Life Inventory™ (PedsQL™) NF1 module., Results: Youth with NF1 and their families experience a wide range of concerns related to HRQoL due to the varied symptom expression and uncertain trajectory of the disorder., Practice Implications: Pediatric nurses should routinely assess for HRQoL in this population and develop strategies tailored to those concerns that require intervention., (© 2017 Wiley Periodicals, Inc.)
- Published
- 2017
- Full Text
- View/download PDF
44. A Rare Case of Stroke Secondary to Iron Deficiency Anemia in a Young Female Patient.
- Author
-
Gopalratnam K, Woodson KA, Rangunwala J, Sena K, and Gupta M
- Abstract
Ischemic strokes occur when there is a sudden obstruction of an artery supplying blood flow to an area of the brain, leading to a focal neurological deficit. Strokes can be thrombotic or embolic in etiology and are associated with underlying conditions such as hypertension and atherosclerosis. Possible etiologies of strokes include cardioembolic disease, hematologic disorders, connective tissue disorders, and substance abuse or can be cryptogenic. Most stroke cases are seen in patients over 65 years of age. However, about one-fourth of strokes occur in young adults. Iron deficiency anemia (IDA) has been described as a known cause for strokes in children, but very few case reports describe this association in adults. We describe a 20-year-old female who presented with sudden onset left side weakness. Magnetic Resonance Imaging (MRI) of the brain demonstrated ischemic infarctions. Patient was also found to be severely anemic. Patient had a thorough work-up including Magnetic Resonance Angiography (MRA) of the brain, echocardiogram, and an extensive screen for thrombophilia disorders. This, however, did not demonstrate a clear etiology. As it has been suggested that IDA is a potential cause for stroke, it is possible the stroke in this young patient was attributable to severe IDA., Competing Interests: The authors declare that they have no competing interests.
- Published
- 2017
- Full Text
- View/download PDF
45. Alleviating Thoracotomy Pain With Intercostal Liposomal Bupivacaine: A Case Report.
- Author
-
Saby A, Swaminathan K, Pangarkar S, and Tribuzio B
- Subjects
- Bupivacaine, Humans, Intercostal Nerves, Nerve Block, Pain, Postoperative, Thoracotomy
- Abstract
Thoracotomy pain is common after chest surgery and may result from injury to the lung pleura, intercostal muscles, costovertebral joint, or intercostal nerves. Inappropriately controlled postoperative pain can hinder recovery and increase the risk of complications such as infection, atelectasis, blood clots, and development of post-thoracotomy pain syndrome. A number of treatment options for acute pain are available, most of which require systemic medications or indwelling catheters that may be contraindicated in patients on anticoagulants. We present the case of a patient with post-thoracotomy pain that effectively was treated with an ultrasound-guided nerve block with liposomal bupivacaine. The patient experienced pain relief without adverse event. Liposomal bupivacaine may be considered a potential treatment option for patients with severe acute post-thoracotomy pain in whom other modalities have not worked or are contraindicated., Level of Evidence: N/A., (Copyright © 2016 American Academy of Physical Medicine and Rehabilitation. Published by Elsevier Inc. All rights reserved.)
- Published
- 2016
- Full Text
- View/download PDF
46. The RAB5-GEF Function of RIN1 Regulates Multiple Steps During Listeria monocytogenes Infection.
- Author
-
Balaji K, French CT, Miller JF, and Colicelli J
- Published
- 2015
- Full Text
- View/download PDF
47. The RAB5-GEF function of RIN1 regulates multiple steps during Listeria monocytogenes infection.
- Author
-
Balaji K, French CT, Miller JF, and Colicelli J
- Subjects
- Animals, Cell Line, Epithelial Cells metabolism, Epithelial Cells microbiology, HeLa Cells, Humans, Intracellular Signaling Peptides and Proteins genetics, Lysosomes, Phagocytosis, Phagosomes metabolism, Rats, Intracellular Signaling Peptides and Proteins metabolism, Listeria monocytogenes pathogenicity, rab5 GTP-Binding Proteins metabolism, ras Guanine Nucleotide Exchange Factors metabolism
- Abstract
Listeria monocytogenes is a food-borne pathogenic bacterium that invades intestinal epithelial cells through a phagocytic pathway that relies on the activation of host cell RAB5 GTPases. Listeria monocytogenes must subsequently inhibit RAB5, however, in order to escape lysosome-mediated destruction. Relatively little is known about upstream RAB5 regulators during L. monocytogenes entry and phagosome escape processes in epithelial cells. Here we identify RIN1, a RAS effector and RAB5-directed guanine nucleotide exchange factor (GEF), as a host cell factor in L. monocytogenes infection. RIN1 is rapidly engaged following L. monocytogenes infection and is required for efficient invasion of intestinal epithelial cells. RIN1-mediated RAB5 activation later facilitates the fusion of phagosomes with lysosomes, promoting clearance of bacteria from the host cell. These results suggest that RIN1 is a host cell regulator that performs counterbalancing functions during early and late stages of L. monocytogenes infection, ultimately favoring pathogen clearance., (© 2014 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.)
- Published
- 2014
- Full Text
- View/download PDF
48. Application of silica nanoparticles in maize to enhance fungal resistance.
- Author
-
Suriyaprabha R, Karunakaran G, Kavitha K, Yuvakkumar R, Rajendran V, and Kannan N
- Subjects
- Antifungal Agents pharmacology, Aspergillus niger drug effects, Disease Resistance drug effects, Disease Resistance physiology, Fusarium drug effects, Plant Diseases immunology, Plant Diseases prevention & control, Zea mays drug effects, Aspergillus niger immunology, Fusarium immunology, Nanoparticles administration & dosage, Plant Diseases microbiology, Silicon Dioxide pharmacology, Zea mays immunology, Zea mays microbiology
- Abstract
In this study, maize treated with nanosilica (20-40 nm) is screened for resistance against phytopathogens such as Fusarium oxysporum and Aspergillus niger and compared with that of bulk silica. The resistivity is measured for disease index and expression of plant responsive compounds such as total phenols, phenylalanine ammonia lyase, peroxidase and polyphenol oxidase. The results indicate that nanosilica-treated plant shows a higher expression of phenolic compounds (2056 and 743 mg/ml) and a lower expression of stress-responsive enzymes against both the fungi. Maize expresses more resistance to Aspergillus spp., than Fusarium spp. These results show significantly higher resistance in maize treated with nanosilica than with bulk, especially at 10 and 15 kg/ha. In addition, hydrophobic potential and silica accumulation percentage of nanosilica treated maize (86.18° and 19.14%) are higher than bulk silica treatment. Hence, silica nanoparticles can be used as an alternative potent antifungal agent against phytopathogens.
- Published
- 2014
- Full Text
- View/download PDF
49. Imatinib for the treatment of pulmonary arterial hypertension and pulmonary capillary hemangiomatosis.
- Author
-
Nayyar D, Muthiah K, Kumarasinghe G, Hettiarachchi R, Celermajer D, Kotlyar E, and Keogh A
- Abstract
Despite currently available treatments, the prognoses of pulmonary arterial hypertension (PAH) and pulmonary capillary hemangiomatosis (PCH) remain poor. Platelet-derived growth factor and its receptor (PDGFR) have been implicated in the pathogenesis of pulmonary hypertension in PAH and PCH. Imatinib, a PDGFR antagonist, may be beneficial in the treatment of both conditions because of its potent antiproliferative effect. We report two cases that demonstrate the potential for safe and efficacious use of imatinib in PAH and PCH.
- Published
- 2014
- Full Text
- View/download PDF
50. In vitro bioactivity and antimicrobial tuning of bioactive glass nanoparticles added with neem (Azadirachta indica) leaf powder.
- Author
-
Prabhu M, Ruby Priscilla S, Kavitha K, Manivasakan P, Rajendran V, and Kulandaivelu P
- Subjects
- Body Fluids drug effects, Cell Line, Tumor, Cell Shape drug effects, Cell Survival drug effects, Escherichia coli drug effects, Humans, Hydrogen-Ion Concentration, Microbial Sensitivity Tests, Nanoparticles ultrastructure, Powders, Silver pharmacology, Spectrometry, X-Ray Emission, Spectroscopy, Fourier Transform Infrared, Staphylococcus aureus drug effects, X-Ray Diffraction, Anti-Infective Agents pharmacology, Azadirachta chemistry, Glass chemistry, Plant Leaves chemistry
- Abstract
Silica and phosphate based bioactive glass nanoparticles (58SiO2-33CaO-9P2O5) with doping of neem (Azadirachta indica) leaf powder and silver nanoparticles were prepared and characterised. Bioactive glass nanoparticles were produced using sol-gel technique. In vitro bioactivity of the prepared samples was investigated using simulated body fluid. X-ray diffraction (XRD) pattern of prepared glass particles reveals amorphous phase and spherical morphology with a particle size of less than 50 nm. When compared to neem doped glass, better bioactivity was attained in silver doped glass through formation of hydroxyapatite layer on the surface, which was confirmed through XRD, Fourier transform infrared (FTIR), and scanning electron microscopy (SEM) analysis. However, neem leaf powder doped bioactive glass nanoparticles show good antimicrobial activity against Staphylococcus aureus and Escherichia coli and less bioactivity compared with silver doped glass particles. In addition, the biocompatibility of the prepared nanocomposites reveals better results for neem doped and silver doped glasses at lower concentration. Therefore, neem doped bioactive glass may act as a potent antimicrobial agent for preventing microbial infection in tissue engineering applications.
- Published
- 2014
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.