41 results on '"Azeem R"'
Search Results
2. POS0260 ONCE-MONTHLY SEL-212 DEMONSTRATES EFFICACY AND SAFETY FOR UP TO 6-MONTHS IN GOUT REFRACTORY TO CONVENTIONAL THERAPY: COMBINED DATA FROM THE DISSOLVE I & II PHASE 3, DOUBLE-BLIND, PLACEBO-CONTROLLED CLINICAL TRIALS
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Baraf, H. S. B., primary, Khanna, P., additional, Patel, A., additional, Singhal, A., additional, Sobierska, J., additional, Santin-Janin, H., additional, Azeem, R., additional, Dehaan, W., additional, Traber, P., additional, and Kivitz, A., additional
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- 2024
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3. POS0033 HEALTH-RELATED QUALITY OF LIFE (HRQOL) AND OTHER SECONDARY CLINICAL OUTCOMES IN ADULTS WITH GOUT REFRACTORY TO CONVENTIONAL THERAPY TREATED WITH SEL-212: POOLED 6-MONTH DATA FROM THE PHASE 3 DISSOLVE I & II CLINICAL TRIALS
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Khanna, P., primary, Patel, A., additional, Singhal, A., additional, Kivitz, A., additional, Sobierska, J., additional, Santin-Janin, H., additional, Kragh, N., additional, Azeem, R., additional, Dehaan, W., additional, Traber, P., additional, and Baraf, H. S. B., additional
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- 2024
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4. LB0002 SAFETY & EFFICACY OF SEL-212 IN PATIENTS WITH GOUT REFRACTORY TO COVENTIONAL TREATMENT: OUTCOMES FROM TWO RANDOMIZED, DOUBLE BLIND, PLACEBO-CONTROLLED, MULTICENTER PHASE III STUDIES
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Baraf, H. S. B., primary, Kivitz, A., additional, Rhodes, S., additional, Leung, S., additional, Folarin, O., additional, Gonzalez-Rivera, T., additional, Sobierska, J., additional, Christie, J., additional, Patel, A., additional, Dehaan, W., additional, Azeem, R., additional, and Traber, P., additional
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- 2023
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5. Developing and Optimizing a Chronic Cyanotic Swine Model
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Gerrah, Rabin, Cabreriza, Santos E., Rusanov, Alexander, Romanov, Alexander, Khan, Azeem R., and Spotnitz, Henry M.
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- 2011
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6. Formulation and In Vitro Evaluation of Salbutamol Sulphate In Situ Gelling Nasal Inserts
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Farid, Ragwa M., Etman, Mohamed A., Nada, Aly H., and Ebian, Abd El Azeem R.
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- 2013
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7. Unveiling the Cardiotoxicity Conundrum: Navigating the Seas of Tyrosine Kinase Inhibitor Therapies
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Jahanzaib Ekram DO, Azeem Rathore DO, Carlos Avila MD, Rahbia Hussein MD, and Mohammed Alomar MD
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Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Tyrosine kinase inhibitors (TKIs) have revolutionized the treatment of various solid and hematologic malignancies by targeting dysregulated signaling pathways critical for malignant cell growth. However, these therapeutic benefits are often accompanied by cardiotoxicities, such as hypertension, left ventricular dysfunction, QT prolongation, and tachyarrhythmias, among others. These cardiotoxicities post a significant challenge in clinical management, often limiting the use of otherwise effective therapies. The underlying mechanism of TKI-induced cardiotoxicity appears to be multifaceted, involving several pathways including: direct cardiomyocyte damage, mitochondrial dysfunction, endothelial damage, and disruption of signaling pathways critical for cardiac function. The range and severity of cardiotoxicities vary significantly across different TKIs, necessitating a comprehensive understanding of each agent’s specific cardiovascular risk profile. Preventing and managing TKI-induced cardiotoxicity requires a comprehensive, multidisciplinary approach. Early identification of at-risk patients through baseline cardiovascular risk assessments and appropriate monitoring during therapy is crucial. Strategies to mitigate cardiotoxic effects include dose modification, the use of cardioprotective agents, and temporary discontinuation of therapy. Additionally, decision making via multidisciplinary teams ensures minimization of cardiovascular complications while also continuing effective cancer treatment. Historically, data have been limited regarding cardiotoxicity and most cancer therapies, which certainly includes TKIs. This review aims to synthesize the current body of knowledge on TKI-associated cardiotoxicities, while highlighting the importance of vigilance and proactive management to minimize cardiovascular complications.
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- 2024
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8. Role of high-density brines in reservoir development stages: A review
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Arshad Raza, Mohamed Mahmoud, Saad Alafnan, Muhammad Arif, Farzain Ud Din Kirmani, Muhammad Shahzad Kamal, Mobeen Murtaza, and Azeem Rana
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Reservoir development ,Brine ,High density ,Environment ,Sustainability ,Production of electric energy or power. Powerplants. Central stations ,TK1001-1841 - Abstract
High-density brines have been recognized beneficial for oilfield applications, with various key areas such as drilling, completion and formation evaluation. High-density brines can play a critical role in the development and production of oil and gas reservoirs during the primary, secondary, and tertiary recovery phases. High-density brines can enhance the mobility and recovery of the oil in the reservoir by controlling the density and viscosity. However, a less attention has been given to the application of high-density brine in the area of reservoir development. This review is shedding light on a concise overview of reservoir development stages in association with the recovery mechanisms. In addition, most possible applications of high-density fluids have also been reviewed in the field of the reservoir development. In summary, this review state that high-density brines can be used to stimulate reservoirs by hydraulic fracturing during the primary recovery phase. However, the risk of increased interfacial tension, which relies on the density difference of two fluids, can trap more residual oil relative to conventional water flooding. In addition, high-density brines are effective in decreasing the mobility ratio and facilitating favorable displacement during polymer flooding. However, they can be least effective in alkaline flooding due to the high IFT related to large density differences. Thus, it is suggested to consider the utilization of sustainable high-density brines by taking into account effective factors in petroleum engineering aspects such as stimulation, secondary recovery and polymer flooding.
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- 2024
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9. Chronic Hypoxemia Increases Ventricular Brain Natriuretic Peptide Precursors in Neonatal Swine
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Khan, Azeem R., Birbach, Mariusz, Cohen, Meryl S., Ittenbach, Richard F., Spray, Thomas L., Levy, Richard J., and Gaynor, J. William
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- 2008
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10. Chronic hypoxemia increases myocardial cytochrome oxidase
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Piel, David A., Khan, Azeem R., Waibel, Robert, Birbach, Mariusz, Cohen, Meryl S., Spray, Thomas L., Deutschman, Clifford S., Gaynor, J. William, and Levy, Richard J.
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- 2005
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11. Improving Water-Based Drilling Mud Performance Using Biopolymer Gum: Integrating Experimental and Machine Learning Techniques
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Mobeen Murtaza, Zeeshan Tariq, Muhammad Shahzad Kamal, Azeem Rana, Tawfik A. Saleh, Mohamed Mahmoud, Sulaiman A. Alarifi, and Nadeem Ahmed Syed
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water-based mud ,swelling inhibition ,fluid loss ,Gum Arabic ,green additive ,machine learning ,Organic chemistry ,QD241-441 - Abstract
Drilling through shale formations can be expensive and time-consuming due to the instability of the wellbore. Further, there is a need to develop inhibitors that are environmentally friendly. Our study discovered a cost-effective solution to this problem using Gum Arabic (ArG). We evaluated the inhibition potential of an ArG clay swelling inhibitor and fluid loss controller in water-based mud (WBM) by conducting a linear swelling test, capillary suction timer test, and zeta potential, fluid loss, and rheology tests. Our results displayed a significant reduction in linear swelling of bentonite clay (Na-Ben) by up to 36.1% at a concentration of 1.0 wt. % ArG. The capillary suction timer (CST) showed that capillary suction time also increased with the increase in the concentration of ArG, which indicates the fluid-loss-controlling potential of ArG. Adding ArG to the drilling mud prominently decreased fluid loss by up to 50%. Further, ArG reduced the shear stresses of the base mud, showing its inhibition and friction-reducing effect. These findings suggest that ArG is a strong candidate for an alternate green swelling inhibitor and fluid loss controller in WBM. Introducing this new green additive could significantly reduce non-productive time and costs associated with wellbore instability while drilling. Further, a dynamic linear swelling model, based on machine learning (ML), was created to forecast the linear swelling capacity of clay samples treated with ArG. The ML model proposed demonstrates exceptional accuracy (R2 score = 0.998 on testing) in predicting the swelling properties of ArG in drilling mud.
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- 2024
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12. Relief of branch pulmonary artery stenosis reduces pulmonary valve insufficiency in a swine model
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J. William Gaynor, Jonathan J. Rome, Travis L. Seymour, Timothy Y Liu, Azeem R. Khan, Matthew A. Harris, Matthew J. Gillespie, and Christopher J. Petit
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Pulmonary and Respiratory Medicine ,medicine.medical_specialty ,Sus scrofa ,Magnetic Resonance Imaging, Cine ,Pulmonary insufficiency ,Constriction, Pathologic ,Pulmonary Artery ,medicine.artery ,Internal medicine ,medicine ,Animals ,Pulmonary wedge pressure ,business.industry ,Pulmonary artery stenosis ,Myocardium ,Hemodynamics ,Left pulmonary artery ,medicine.disease ,Magnetic Resonance Imaging ,Right pulmonary artery ,Pulmonary Valve Insufficiency ,Surgery ,medicine.anatomical_structure ,Pulmonary valve ,Pulmonary artery ,Ventricular Function, Right ,Cardiology ,Cardiology and Cardiovascular Medicine ,business ,Blood Flow Velocity - Abstract
ObjectiveWe sought to determine the impact of relieving branch pulmonary artery stenosis on pulmonary valve insufficiency and right ventricular function. Long-standing pulmonary insufficiency causes progressive right ventricular dilatation, leading to decreased right ventricular function. Adults with pulmonary insufficiency are at risk of decreased exercise tolerance, arrhythmias, and sudden cardiac death. Branch pulmonary artery stenosis frequently occurs in these patients, and the presence of branch stenosis may exacerbate valve insufficiency.MethodsNeonatal piglets (n = 7) underwent surgery to create pulmonary insufficiency and left pulmonary artery stenosis. At 3 months of age, the animals underwent baseline cardiac magnetic resonance imaging followed by stenting of the left pulmonary artery. A repeat magnetic resonance imaging scan was performed 1 week after intervention. Magnetic resonance imaging evaluation included (1) velocity mapping to assess the forward and reverse flow at the main, left and right pulmonary arteries, and aorta; and (2) volumetric assessment of the right ventricle.ResultsLeft pulmonary artery flow increased from 14.5% to 36.3% of total net flow after stenting (P < .01). Pulmonary regurgitation decreased from 38.7% to 27.4% (P < .02). Right ventricular ejection fraction improved from a median of 53.5% to 58.2% after stenting (P < .01). Cardiac index improved from a median of 2.7 to 3.5 L/min/m2 (P = .01).ConclusionRelief of branch pulmonary artery stenosis reduces insufficiency and improves right ventricular systolic function in this animal model. This supports the practice of aggressive intervention in patients with branch pulmonary artery stenosis and pulmonary insufficiency.
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- 2009
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13. Hemodynamics and Axial Strain Additively Increase Matrix Remodeling and MMP-9, But Not MMP-2, Expression in Arteries Engineered by Directed Remodeling
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Azeem R. Khan, Jason W. Nichol, J. William Gaynor, Keith J. Gooch, and Mariusz Birbach
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Sus scrofa ,Biomedical Engineering ,Hemodynamics ,Bioengineering ,Matrix (biology) ,Matrix metalloproteinase ,Biochemistry ,Article ,Biomaterials ,Extracellular matrix ,In vivo ,medicine ,Animals ,Cell Nucleus ,Tissue Engineering ,biology ,Chemistry ,Transcription Factor RelA ,NF-kappa B p50 Subunit ,Arteries ,Immunohistochemistry ,Elastin ,Extracellular Matrix ,Protein Transport ,medicine.anatomical_structure ,Matrix Metalloproteinase 9 ,biology.protein ,Biophysics ,Matrix Metalloproteinase 2 ,Stress, Mechanical ,Ex vivo ,Biomedical engineering ,Artery - Abstract
We previously demonstrated the ability to create engineered arteries by carefully controlling the mechanical environment of intact arteries perfused ex vivo, yielding engineered arteries with native appearance and vasoactive response. Increased axial strain was sufficient to increase length up to 20% in 9 days through a growth and remodeling response. The amount of the achievable length increase, however, was highly dependent on the hemodynamic conditions acting through unknown mechanisms. Because matrix metalloproteinase-2 (MMP-2) and matrix metalloproteinase-9 (MMP-9) activity is increased, and often required, in mechanically induced remodeling in vivo, MMP-2 and MMP-9 expression was investigated to elucidate the hemodynamic mediation of artery length. Carotid arteries from 30 kg pigs were perfused for 9 days ex vivo at either in situ axial strain or with a gradual 50% increase in axial strain, under either arterial or reduced hemodynamics ( approximately 10% of arterial hemodynamics). MMP-2 protein expression increased roughly twofold, while MMP-9 expression increased threefold under either reduced hemodynamics or increased axial strain (p0.05). The combination of reduced hemodynamics with increased axial strain demonstrated an additive increase in MMP-9 protein (p0.05) with no further change in MMP-2 expression. To investigate the mechanism by which axial strain and hemodynamics could additively increase MMP-9 expression, the expression of nuclear factor kappa B (NF-kappaB) subunits p50 and p65 was evaluated. Axial strain stimulated p65 expression and localization, while hemodynamics increased p50 expression, with both molecules being expressed only when both mechanical stimuli were applied. These data suggest that MMP-9 expression can be simultaneously stimulated by separate mechanical stimuli mediated by p50 and p65 expression, and that by using conditions that maximize MMP-9 expression, we can create an optimal remodeling environment to better direct the growth of engineered arteries and other tissues.
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- 2009
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14. Pontage artério-veineux fémoro-rénal : une possibilité d'accès pour hémodialyse
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Roderick J. Romero, Lea M. Blackwell, Diane Kwan, Azeem R. Khan, Jon V. Schellack, Addison D. Thompson, Paul E. Perkowski, Colin D. Goodier, Shawn J. Stafford, and Imtiaz R. Khan
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Gynecology ,medicine.medical_specialty ,business.industry ,medicine ,Electrical and Electronic Engineering ,business ,Atomic and Molecular Physics, and Optics - Abstract
Il s'est produit une augmentation significative du nombre de malades en insuffisance renale terminale. Le nombre limite de greffons renaux rend necessaire que la plupart des malades deviennent dependants d'une dialyse chronique. En raison des nombreuses complications associees aux catheters temporaires, les acces arterio-veineux permanents sont plus interessants en tant qu'acces vasculaires a long terme. Cependant, avec la disponibilite reduite des sites d'acces vasculaire permanent, il est important d'avoir de nombreuses possibilites. Dans cette observation, nous presentons un choix alternatif pour un pontage arterio-veineux entre l'artere femorale commune gauche et la veine renale gauche chez un malade ayant des options limitees d'acces vasculaire.
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- 2008
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15. Injerto arteriovenoso femoro-renal: una opción viable para el abordaje de hemodiálisis
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Addison D. Thompson, Paul E. Perkowski, Shawn J. Stafford, Jon V. Schellack, Roderick J. Romero, Lea M. Blackwell, Imtiaz R. Khan, Colin D. Goodier, Diane Kwan, and Azeem R. Khan
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General Computer Science - Abstract
En los ultimos anos se ha producido un aumento significativo del numero de pacientes con insuficiencia renal terminal. Por otra parte, el numero limitado de trasplantes renales conlleva que la mayor parte de pacientes sean dependientes de la dialisis cronica. Debido a las numerosas complicaciones asociadas con los cateteres de abordaje temporal, el abordaje arteriovenoso permanente es mas beneficioso como acceso vascular a largo plazo. No obstante, a causa de la disponibilidad limitada de vasos para practicar un acceso vascular permanente, es importante disponer de diversas posibilidades. En este articulo presentamos un caso de implantacion de un injerto arteriovenoso alternativo ,entre la arteria femoral comun izquierda y la vena renal izquierda, en un paciente con opciones limitadas de acceso vascular.
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- 2008
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16. Femororenal Arteriovenous Graft: A Viable Option for Hemodialysis Access
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Paul E. Perkowski, Azeem R. Khan, Shawn J. Stafford, Lea M. Blackwell, Diane Kwan, Jon V. Schellack, Addison D. Thompson, Imtiaz R. Khan, Colin D. Goodier, and Roderick J. Romero
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Adult ,Male ,medicine.medical_specialty ,Vascular access ,Disease ,Femoral artery ,Prosthesis Design ,Renal Veins ,Blood Vessel Prosthesis Implantation ,Arteriovenous Shunt, Surgical ,Renal Dialysis ,medicine.artery ,medicine ,Humans ,Intensive care medicine ,Polytetrafluoroethylene ,Vascular Patency ,Hemodialysis access ,Kidney ,business.industry ,Left renal vein ,Phlebography ,General Medicine ,Femoral Vein ,Blood Vessel Prosthesis ,Surgery ,medicine.anatomical_structure ,Chronic dialysis ,Kidney Failure, Chronic ,Cardiology and Cardiovascular Medicine ,business - Abstract
There has been a significant increase in the number of patients with end-stage renal disease. The limited number of kidney transplants necessitates that most patients become dependent upon chronic dialysis. Due to the numerous complications associated with temporary access catheters, permanent arteriovenous access is more beneficial for long-term vascular access. However, with the restricted availability of sites for permanent vascular access, it is important to have a variety of possibilities. In this case report, we present an alternative choice for an arteriovenous graft, left common femoral artery to left renal vein, in a patient with limited vascular access options.
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- 2008
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17. COVID‐19‐associated Brugada pattern electrocardiogram: Systematic review of case reports
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Kevin Liu, Kai Chen, Ekin C. Uzunoglu, Azeem Rathore, Tanya Deol, Ele Wu, Claude S. Elayi, Prakash G. Suryanarayana, Stephen G. Keim, and John N. Catanzaro
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Brugada ,COVID ,electrocardiogram ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Abstract Aims To summarize published case reports of patients diagnosed with coronavirus disease 2019 (COVID‐19) and Brugada pattern electrocardiogram (ECG). Methods The Preferred Reporting Items for Systematic Reviews and Meta‐Analyses checklist were followed. A literature search was conducted using PubMed, EMBASE, and Scopus up until September 2021. The incidence, clinical characteristics, and management outcomes of COVID‐19 patients with a Brugada pattern ECG were identified. Results A total of 18 cases were collected. The mean age was 47.1 years and 11.1% were women. No patients had prior confirmed diagnosis of Brugada syndrome. The most common presenting clinical symptoms were fever (83.3%), chest pain (38.8%), shortness of breath (38.8%), and syncope (16.6%). All 18 patients presented with type 1 Brugada pattern ECG. Four patients (22.2%) underwent left heart catheterization, and none demonstrated the presence of obstructive coronary disease. The most common reported therapies included antipyretics (55.5%), hydroxychloroquine (27.7%), and antibiotics (16.6%). One patient (5.5%) died during hospitalization. Three patients (16.6%) who presented with syncope received either an implantable cardioverter defibrillator or wearable cardioverter defibrillator at discharge. At follow‐up, 13 patients (72.2%) had resolution of type 1 Brugada pattern ECG. Conclusion COVID‐19‐associated Brugada pattern ECG seems relatively rare. Most patients had resolution of the ECG pattern once their symptoms have improved. Increased awareness and timely use of antipyretics is warranted in this population.
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- 2023
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18. Spigelian hernia as a cause of small bowel obstruction
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Bastidas, Juan G., Khan, Azeem R., and LeBlanc, Karl A.
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Abdominal hernia -- Diagnosis ,Abdominal hernia -- Care and treatment ,Abdominal hernia -- Case studies ,Polytetrafluoroethylene -- Usage ,Polytetrafluoroethylene -- Case studies ,Intestines -- Obstructions ,Intestines -- Causes of ,Intestines -- Care and treatment ,Intestines -- Case studies ,Health - Published
- 2010
19. First case of Arcobacter species isolated in pericardial fluid in an HIV and COVID-19 patient with worsening cardiac tamponade
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Azeem Rathore, Falguni Patel, Nidhi Gupta, Denis D. Asiimwe, Fabiana Rollini, and Malleswari Ravi
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Arcobacter ,Pericardial effusion ,Cardiac tamponade ,COVID-19 ,COVID-19 vaccine ,Case report ,Infectious and parasitic diseases ,RC109-216 - Abstract
Arcobacter spp. is an emerging pathogen that is increasingly recognized as a cause of human infections. Gastrointestinal manifestations are most described in the case report literature. We present a case of the first documented case of Arcobacter spp. isolated in pericardial fluid in an immunocompromised patient with worsening cardiac tamponade that was successfully managed with an urgent pericardiocentesis and ensuing steroids, antibiotics, and a pericardial drain. The patient had a past medical history of HIV, latent syphilis, PCP pneumonia, ESRD, and hypertension, and presented with worsening dyspnea, subjective fever, myalgias, cough, pleuritic chest pain, and pericardial rub. Diagnostic workup revealed a positive COVID-19 PCR test, elevated high-sensitive cardiac troponins, elevated CRP, elevated D-dimer, and elevated creatinine. An ECG revealed diffuse ST-segment elevation, and imaging showed cardiomegaly with pulmonary vascular congestion and diffuse interstitial edema. Urgent TTE showed a large circumferential pericardial effusion with tamponade physiology present. Culture on aerobic blood agar grew Arcobacter spp. of unknown specific species, and blood cultures were also positive for Arcobacter spp. Treatment involved intravenous meropenem for five days, followed by oral ciprofloxacin, low-dose colchicine, and a tapered dose of ibuprofen. Repeat laboratory data and TTE showed complete resolution of the pericardial effusion and improved left ventricular function. This case highlights the potential for Arcobacter spp. to cause severe infections and the importance of considering it as a possible pathogen in patients with atypical presentations.
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- 2023
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20. Tuberculous peritonitis: a surgical dilemma
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Khan, Azeem R., Morris, Lee M., Keswani, Sundeep G., Khan, Imtiaz R., Le, Linda, Lee, W. Chapman, and Hunt, John P.
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Tuberculosis -- Development and progression ,Tuberculosis -- Physiological aspects ,Tuberculosis -- Case studies ,Peritonitis -- Diagnosis ,Peritonitis -- Care and treatment ,Peritonitis -- Causes of ,Peritonitis -- Case studies ,Abdominal pain -- Causes of ,Abdominal pain -- Care and treatment ,Abdominal pain -- Case studies ,Health - Published
- 2009
21. Formulation and In Vitro Evaluation of Salbutamol Sulphate In Situ Gelling Nasal Inserts
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Aly Nada, Mohamed A. Etman, Ragwa M. Farid, and Abd El Azeem R. Ebian
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Alginates ,Polymers ,Surface Properties ,Chemistry, Pharmaceutical ,Pharmaceutical Science ,Aquatic Science ,Methylcellulose ,Chitosan ,Diffusion ,chemistry.chemical_compound ,Differential scanning calorimetry ,Hypromellose Derivatives ,Glucuronic Acid ,Drug Discovery ,Mucoadhesion ,Technology, Pharmaceutical ,Albuterol ,Solubility ,Ecology, Evolution, Behavior and Systematics ,Administration, Intranasal ,Drug Carriers ,Chromatography ,Ecology ,Calorimetry, Differential Scanning ,Chemistry ,Hexuronic Acids ,technology, industry, and agriculture ,Mucins ,Adhesiveness ,General Medicine ,Hydrogen-Ion Concentration ,Bronchodilator Agents ,Kinetics ,Carboxymethylcellulose Sodium ,Delayed-Action Preparations ,Drug delivery ,Nasal administration ,Drug carrier ,Agronomy and Crop Science ,Gels ,Hydrophobic and Hydrophilic Interactions ,Research Article - Abstract
The aim of this study was to formulate salbutamol sulfate (SS), a model drug, as mucoadhesive in situ gelling inserts having a high potential as nasal drug delivery system bypassing the first-pass metabolism. In situ gelling inserts, each containing 1.4% SS and 2% gel-forming polymer, hydroxypropyl methylcellulose (HPMC), carboxymethylcellulose sodium (CMC Na), sodium alginate (AL), and chitosan (CH) were prepared. The inserts were investigated for their different physicochemical properties. The weight of inserts was 16–27 mg, drug content was 3.9–4.2 mg, thickness ranged between 15 and 28 μm and surface pH was 5–7. Cumulative drug released from the inserts exhibited extended release for more than 10 h following the decreasing order: CH > AL > CMC Na > HPMC. The drug release from CMC Na and AL inserts followed zero-order kinetics while HPMC and CH inserts exhibited non-Fickian diffusion mechanism. The inserts exhibited different water uptake (7–23%) with the smallest values for CH. Differential scanning calorimetry study pointed out possible interaction of SS and oppositely charged anionic polymers (CMC Na and AL). The mucoadhesive in situ gelling inserts exhibited satisfactory mucoadhesive and extended drug release characteristics. The inserts could be used for nasal delivery of SS over about 12 h; bypassing the hepatic first-pass metabolism without potential irritation.
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- 2013
22. Spigelian hernia as a cause of small bowel obstruction
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Karl A. LeBlanc, Azeem R. Khan, and Juan G. Bastidas
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Male ,medicine.medical_specialty ,Abdominal wall ,Abdominal muscles ,Spigelian hernia ,Intestine, Small ,Medicine ,Humans ,Aponeurosis ,Polytetrafluoroethylene ,Aged ,business.industry ,Abdominal wall defect ,Suture Techniques ,General Medicine ,Surgical Mesh ,medicine.disease ,digestive system diseases ,Hernia, Ventral ,Surgery ,Bowel obstruction ,stomatognathic diseases ,surgical procedures, operative ,medicine.anatomical_structure ,business ,Tomography, X-Ray Computed ,Intestinal Obstruction - Abstract
Spigelian hernia is a rare abdominal wall defect usually appearing between the abdominal muscle lateral to the rectus abdominis and through a debilitated spigelian aponeurosis. Spigelian hernias account for 0.12% to 2.4% of all abdominal wall hernias with a 17-24% risk of strangulation. We report the case of a 77-year-old male that presented with small bowel obstruction with incarcerated spigelian hernia which was successfully treated with a Ventralex hernia patch (Bard Access Systems, Inc., Murray Hill, NJ). A small open incision over the incarcerated hernia was a safe and effective method of repairing an incarcerated spigelian hernia in an urgent fashion.
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- 2010
23. Developing and optimizing a chronic cyanotic swine model
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Rabin Gerrah, Azeem R. Khan, Alexander Rusanov, Alexander Romanov, Santos E. Cabreriza, and Henry M. Spotnitz
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Heart Defects, Congenital ,medicine.medical_specialty ,Sus scrofa ,Biocompatible Materials ,Anastomosis ,Pulmonary Artery ,Hypoxemia ,Blood loss ,Fraction of inspired oxygen ,medicine.artery ,Internal medicine ,medicine ,Animals ,Heart Atria ,Hypoxia ,Polytetrafluoroethylene ,Cyanosis ,business.industry ,Anastomosis, Surgical ,Arrhythmias, Cardiac ,Thrombosis ,Hypoxia (medical) ,medicine.disease ,Shunt (medical) ,Disease Models, Animal ,Pulmonary artery ,Chronic Disease ,Cardiology ,Surgery ,medicine.symptom ,business - Abstract
Background Pulmonary artery (PA)-left atrial (LA) shunt models in piglets have been described, but technical details critical to limit morbidity/mortality and promote study of chronic cyanosis are lacking. Accordingly, we describe our experience with an optimized technique. Materials and Methods In 25 6- to 8-wk-old Yorkshire piglets, a beveled, 8 mm, polytetrafluoroethylene tube graft was anastomosed to the PA and LA. Systemic pressure was maintained at >60 mmHg. Saturation targets were met by adjusting a Teflon band on the graft and distal PA. The target oxygen saturation (So 2 ) was 85% on a 50% fraction of inspired oxygen (Fio 2 ). If the So 2 was 2 , the graft was constricted to achieve a So 2 ≥ 90% on a 100% Fio 2 and 75%–80% on a 21% Fio 2 . Complications affecting mortality were neutralized with a stepwise strategy to minimize risk. Results Thrombosis, blood loss, and arrhythmia were determinants of survival. Protocol optimization over time increased survival while assuring chronic cyanosis. Survival approached 90%, with a So 2 of 80% to 90%, 3 to 5 wk postoperatively. Complications included bleeding, excessive hypoxemia, uncontrolled shunt flow, arrhythmias, and thrombosis. Conclusions Refinement of surgical technique, shunt adjustment via graft banding, and thrombotic and arrhythmia prophylaxis are the keys to success with this model.
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- 2009
24. Substrate characterization of ventricular tachycardia in a porcine model of tetralogy of Fallot using noncontact mapping
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J. William Gaynor, Ilana Zeltser, Azeem R. Khan, Travis L. Seymour, Maully J. Shah, Ronn E. Tanel, Jonathan R. Kaltman, Matthew J. Gillespie, Victoria L. Vetter, and Larry A. Rhodes
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Tachycardia ,medicine.medical_specialty ,Swine ,Diastole ,Pulmonary insufficiency ,Ventricular tachycardia ,Heart Conduction System ,Internal medicine ,Medicine ,Ventricular outflow tract ,Animals ,Sinus rhythm ,Tetralogy of Fallot ,business.industry ,Body Surface Potential Mapping ,General Medicine ,medicine.disease ,Disease Models, Animal ,medicine.anatomical_structure ,Ventricle ,Cardiology ,Tachycardia, Ventricular ,medicine.symptom ,Cardiology and Cardiovascular Medicine ,business - Abstract
Background:Ventricular tachycardia (VT) in patients following tetralogy of Fallot (TOF) repair is challenging to map because of the presence of scar, patch material, and hemodynamic residua of surgery. This study investigates whether noncontact mapping can identify the arrhythmia substrate in a porcine model that involves a right ventricular outflow tract (RVOT) patch and either chronic volume or pressure load on the right ventricle. Methods:Nine infant pigs (3–5 kg) underwent surgery involving an RVOT patch and creation of pulmonary insufficiency (PI, n = 4) or pulmonary stenosis (PS, n = 5). After a mean of 4.2 months, pigs underwent invasive electrophysiology studies (EPS) with noncontact mapping (Ensite, St. Jude Medical, St. Paul, MN USA) of the right ventricle. Automated, unipolar voltage maps (VM) were constructed during sinus rhythm. Threshold for substrate was set at −0.5 mV and incrementally adjusted to higher values until a contiguous region of low voltage was delineated. Programmed stimulation was performed to induce VT. VT activation was correlated to location of VM defined substrate. Three control pigs underwent EPS and VM. Results:Free-wall RVOT substrate was identified in each of the model animals, correlating to location of the patch. The mean voltage threshold was −1.1 mV. VT was induced in 6/9 animals. Diastolic activation approximated the inferior or lateral border of the substrate in all animals. No RVOT substrate was identified in the control pigs. Conclusion:Automated voltage mapping of sinus beats identifies substrate for VT in a porcine model of TOF. Consistent diastolic activation of the substrate border was found during VT. Targeting this area may be useful in the ablation of VT after repair of TOF.
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- 2007
25. Abstract 2346: Stenting of Pulmonary Artery Branch Stenosis Alleviates Pulmonary Valve Insufficiency in a Swine Model of Repaired Tetralogy of Fallot
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Travis L. Seymour, Azeem R. Khan, Matthew A. Harris, Timothy Y Liu, James W Gaynor, Matthew J. Gillespie, Jonathan J. Rome, Richard B. Kim, Christopher J. Petit, and Evelio Rodriguez
- Subjects
medicine.medical_specialty ,Reduced exercise tolerance ,business.industry ,Pulmonary Artery Branch ,medicine.disease ,Stenosis ,Physiology (medical) ,Internal medicine ,medicine ,Cardiology ,Ventricular volume ,Pulmonary Valve Insufficiency ,Cardiology and Cardiovascular Medicine ,business ,Tetralogy of Fallot - Abstract
Introduction : Pulmonary insufficiency-induced right ventricular volume overload in adults with repaired tetralogy of Fallot (TOF) is associated with reduced exercise tolerance, ventricular arrhythmias and sudden cardiac death. Studies have shown that the severity of pulmonary insufficiency (PI) predicts these symptoms. There has been indirect evidence that pulmonary artery branch stenosis (PABS) exacerbates PI in adults with repaired TOF. However the impact of treatment of PABS on PI has not been evaluated. Hypothesis : Relief of unilateral PABS in the setting of PI alleviates the severity of PI. Methods : Newborn piglets (n=9) underwent pulmonary valve resection with transannular patch and left pulmonary artery (LPA) banding. Between 10 to 16 weeks later, a cardiac catheterization was performed with hemodynamic evaluation and stenting of the banded LPA. Immediately prior to catheterization, and then 1 week following intervention, a cardiac MRI was performed. MRI data obtained included main and branch pulmonary arterial forward and reverse flow, and right and left ventricular volume. Results: Six animals survived the protocol. At time of catheterization, the LPA had a discrete stenosis, with a mean gradient of 11.6 mmHg (range 9 –16.1) across the banded region. The mean diameter of the LPA at the banded region was 3.4 mm (range 3.1– 4.2) and 10.8 mm distally (range 9.6 –14) at baseline, compared with a mean right pulmonary artery diameter of 20.2 mm. The banded region was stented to a mean diameter of 10.4 mm (range 8 –12.6). The main pulmonary artery regurgitant fraction (RF) at baseline was a mean of 38.2%; after stenting of the LPA, the RF decreased to 29.6% (p=0.02). Flow into the LPA improved in all animals, from a mean of 12.2% of total at baseline to 33.6% following stenting (p Conclusions: In the setting of unilateral PABS, stenting alleviates the severity of PI in an animal model of repaired TOF. Though clinical studies are required, these findings should be considered in decisions regarding treatment of PABS after repair of TOF.
- Published
- 2007
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26. Chronic hypoxemia increases ventricular brain natriuretic peptide precursors in neonatal swine
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Richard J. Levy, Azeem R. Khan, Mariusz Birbach, J. William Gaynor, Meryl S. Cohen, Thomas L. Spray, and Richard F. Ittenbach
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Pulmonary and Respiratory Medicine ,Heart Defects, Congenital ,medicine.medical_specialty ,medicine.drug_class ,Swine ,Enzyme-Linked Immunosorbent Assay ,Hematocrit ,Sensitivity and Specificity ,Hypoxemia ,Random Allocation ,Atrial natriuretic peptide ,Internal medicine ,medicine.artery ,Natriuretic Peptide, Brain ,medicine ,Natriuretic peptide ,Animals ,cardiovascular diseases ,Protein Precursors ,Hypoxia ,Probability ,medicine.diagnostic_test ,business.industry ,Brain natriuretic peptide ,Prognosis ,Disease Models, Animal ,medicine.anatomical_structure ,Animals, Newborn ,Ventricle ,Pulmonary artery ,Circulatory system ,Chronic Disease ,cardiovascular system ,Cardiology ,Surgery ,medicine.symptom ,Cardiology and Cardiovascular Medicine ,business ,Atrial Natriuretic Factor ,Biomarkers - Abstract
Circulating levels of atrial natriuretic peptide and brain natriuretic peptide (BNP) are elevated in patients with cyanotic congenital heart disease and associated with the severity of ventricular dysfunction. We evaluated the effect of chronic hypoxemia on left ventricle pro-atrial natriuretic peptide and pro-BNP, the cytoplasmic precursors of the plasma hormones.Forty newborn piglets were randomized to placement of a pulmonary artery to left atrium shunt to create hypoxemia or sham thoracotomy. Animals were studied at 1 or 2 weeks after the procedure (four groups, n = 10 per group). Arterial oxygen tension and hematocrit were obtained. Left ventricular shortening fraction was measured by echocardiography. Left ventricular tissue was harvested and cytoplasm was extracted. Pro-BNP levels were determined by Western blot analysis. Pro-atrial natriuretic peptide levels were determined using enzyme-linked immunosorbent assay.Significant differences among treatment groups were observed for arterial oxygen tension (p0.001) and hematocrit (p0.001). Pairwise comparisons indicated lower arterial oxygen tension and higher hematocrit for hypoxemic piglets compared with control piglets at 1 and 2 weeks. Left ventricular shortening fraction was not decreased in the hypoxemic animals at any time (p = 0.638). Left ventricular pro-atrial natriuretic peptide decreased in hypoxemic piglets (p = 0.029), whereas left ventricular pro-BNP increased in hypoxemic piglets at 2 weeks (p = 0.002).Chronic hypoxemia alone, even in the absence of cardiac dysfunction, is sufficient to increase ventricular levels of pro-BNP. This finding may have implications for the interpretation of BNP levels in the clinical management of patients with cyanotic congenital heart disease.
- Published
- 2007
27. Chronic hypoxemia increases myocardial cytochrome oxidase
- Author
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David A. Piel, Robert J. Waibel, Richard J. Levy, Mariusz Birbach, Clifford S. Deutschman, Meryl S. Cohen, Thomas L. Spray, J. William Gaynor, and Azeem R. Khan
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Pulmonary and Respiratory Medicine ,medicine.medical_specialty ,Swine ,chemistry.chemical_element ,Hematocrit ,Oxygen ,Hypoxemia ,Electron Transport Complex IV ,chemistry.chemical_compound ,Internal medicine ,medicine ,Cytochrome c oxidase ,Animals ,Hypoxia ,medicine.diagnostic_test ,biology ,business.industry ,Myocardium ,Hypoxia (medical) ,Heme A ,Endocrinology ,chemistry ,Animals, Newborn ,Anesthesia ,Chronic Disease ,biology.protein ,Surgery ,medicine.symptom ,Cardiology and Cardiovascular Medicine ,business ,Adenosine triphosphate - Abstract
ObjectiveCyanotic patients have potentially decreased tissue oxygen tension. Cytochrome oxidase catalyzes the reduction of oxygen and is integral to adenosine triphosphate production. Cytochrome oxidase subunit I, the active site, is encoded by mitochondrial DNA. Using a newborn swine model of chronic hypoxemia, we evaluated ventricular cytochrome oxidase subunit I mRNA and protein expression and assessed cytochrome oxidase activity.MethodsThirty-two newborn piglets underwent thoracotomy and placement of a pulmonary artery–to–left atrium shunt or sham operation. Two weeks later, partial pressure of arterial oxygen, hematocrit, and left ventricular shortening fraction values were compared with baseline values. Northern blot hybridization and protein immunoblotting for ventricular cytochrome oxidase subunit I were performed. Cytochrome oxidase kinetic activity was measured. Heme a,a3 content and turnover number were determined. Significance was assessed with a t test.ResultsBaseline partial pressure of arterial oxygen and hematocrit values were similar. Hypoxemic piglets had a lower partial pressure of arterial oxygen of 38 ± 10 mm Hg (P < .001) and higher hematocrit value of 31.4% ± 2.9% (P < .001) compared with a partial pressure of arterial oxygen of 140 ± 47 mm Hg and hematocrit value of 24.6% ± 3.9% after the sham operation. Baseline and postprocedure left ventricular shortening fraction were similar within and between groups. Chronic hypoxemia increased right ventricular and left ventricular cytochrome oxidase I mRNA and protein by more than 1.4-fold. Cytochrome oxidase activity increased significantly in hypoxemia by 2.5-fold compared with that seen after the sham operation. Heme a,a3 content and turnover number increased by 1.5-fold during hypoxemia.ConclusionsChronic hypoxemia increases cytochrome oxidase I message, protein expression, and activity. The increase in kinetics was due to increased enzyme content and catalytic activity. This is a possible adaptive mechanism that might preserve organ function during chronic hypoxemia.
- Published
- 2004
28. Tuberculous Peritonitis: A Surgical Dilemma
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W Chapman Lee, Sundeep G. Keswani, Imtiaz R. Khan, Lee M. Morris, John P. Hunt, Linda Le, and Azeem R. Khan
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Adult ,Male ,medicine.medical_specialty ,medicine.medical_treatment ,Antitubercular Agents ,Peritonitis, Tuberculous ,Human immunodeficiency virus (HIV) ,Peritonitis ,HIV Infections ,medicine.disease_cause ,Abdominal tuberculosis ,Laparotomy ,Tuberculous peritonitis ,Tuberculous enteritis ,Humans ,Medicine ,Intestinal obstruction surgery ,Intensive care medicine ,business.industry ,General Medicine ,medicine.disease ,Abdominal Pain ,Tomography, X-Ray Computed ,business ,Medical therapy ,Intestinal Obstruction - Abstract
This is a case report of tuberculous peritonitis (TB), an entity which is difficult to diagnose. When TB is found in extrapulmonary organs it is usually associated with an immunocompromised state, such as that caused by the human immunodeficiency virus (HIV). Medical therapy continues to be the treatment of choice and, if the correct diagnosis is made early, surgery is rarely required.
- Published
- 2009
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29. Femororenal Arteriovenous Graft: A Viable Option for Hemodialysis Access
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Khan, Azeem R., Blackwell, Lea M., Stafford, Shawn J., Thompson, Addison D., Romero, Roderick J., Goodier, Colin D., Kwan, Diane, Khan, Imtiaz R., Schellack, Jon V., and Perkowski, Paul E.
- Published
- 2008
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30. Pontage artério-veineux fémoro-rénal : une possibilité d'accès pour hémodialyse
- Author
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Khan, Azeem R., Blackwell, Lea M., Stafford, Shawn J., Thompson, Addison D., Romero, Roderick J., Goodier, Colin D., Kwan, Diane, Khan, Imtiaz R., Schellack, Jon V., and Perkowski, Paul E.
- Published
- 2008
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- View/download PDF
31. Hemodynamics and Axial Strain Additively Increase Matrix Remodeling and MMP-9, But Not MMP-2, Expression in Arteries Engineered by Directed Remodeling
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Nichol, Jason W., primary, Khan, Azeem R., additional, Birbach, Mariusz, additional, Gaynor, J. William, additional, and Gooch, Keith J., additional
- Published
- 2009
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32. Analysis of circumferentially welded thin-walled cylinders to study the effects of tack weld orientations and joint root opening on residual stress fields
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Dar, N U, primary, Qureshi, E M, additional, Malik, A M, additional, Hammouda, M M I, additional, and Azeem, R A, additional
- Published
- 2009
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- View/download PDF
33. Injerto arteriovenoso femoro-renal: una opción viable para el abordaje de hemodiálisis
- Author
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Khan, Azeem R., primary, Blackwell, Lea M., additional, Stafford, Shawn J., additional, Thompson, Addison D., additional, Romero, Roderick J., additional, Goodier, Colin D., additional, Kwan, Diane, additional, Khan, Imtiaz R., additional, Schellack, Jon V., additional, and Perkowski, Paul E., additional
- Published
- 2008
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34. Abstract 2346: Stenting of Pulmonary Artery Branch Stenosis Alleviates Pulmonary Valve Insufficiency in a Swine Model of Repaired Tetralogy of Fallot
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Petit, Christopher J, primary, Gillespie, Matthew J, additional, Harris, Matthew A, additional, Seymour, Travis L, additional, Liu, Timothy Y, additional, Khan, Azeem R, additional, Kim, Richard, additional, Rodriguez, Evelio, additional, Gaynor, J. W, additional, and Rome, Jonathan J, additional
- Published
- 2007
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35. The effects of chronic and acute physical activity on working memory performance in healthy participants: a systematic review with meta-analysis of randomized controlled trials
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Azeem Rathore and Barbara Lom
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Acute physical activity ,Chronic physical activity ,Healthy participants ,Working memory ,Cognition ,Randomized controlled trials ,Medicine - Abstract
Abstract Background Understanding how physical activity (PA) influences cognitive function in populations with cognitive impairments, such as dementia, is an increasingly studied topic yielding numerous published systematic reviews. In contrast, however, there appears to be less interest in examining associations between PA and cognition in cognitively healthy individuals. Therefore, the objective of this review was to evaluate and synthesize randomized controlled trial (RCT) studies that investigated the effects of both chronic and acute PA on working memory performance (WMP) in physically and cognitively healthy individuals. Methods Following the preferred reporting items for systematic review and meta-analysis (PRISMA) guidelines, a systematic review of studies published between August 2009 and December 2016 was performed on RCTs investigating the effects of chronic and acute PA on WMP with healthy participants as the sample populations. Searches were conducted in Annual Reviews, ProQuest, PsycARTICLES, PsycINFO, PubMed, and Web of Science. Main inclusion criteria stipulated (1) healthy sample populations, (2) PA interventions, (3) WMP as an outcome, and (4) RCT designs. Descriptive statistics included cohort and intervention characteristics and a risk of bias assessment. Analytical statistics included meta-analyses and moderation analyses. Results From 7345 non-duplicates, 15 studies (eight chronic PA and seven acute PA studies) met the inclusion criteria and were evaluated. Overall, there was noticeable variance between both cohort and intervention characteristics. Sample populations ranged from primary school children to retirement community members with PA ranging from cycling to yoga. The majority of studies were characterized by “low” or “unclear” risk of selection, performance, detection, attrition, reporting, or other biases. Meta-analysis of chronic PA revealed a significant, small effect size while analysis of acute PA revealed a non-significant, trivial result. Age and intensity were significant moderators while allocation concealment, blinding, and intervention length were not. Conclusions Chronic PA can significantly improve WMP while acute PA cannot. The limiting factors for acute PA studies point to the diversity of working memory instruments utilized, unequal sample sizes between studies, and the sample age groups. Large-scale, high-quality RCTs are needed in order to provide generalizable and more powerful analysis between PA and WMP in a systematic approach.
- Published
- 2017
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36. MODES OF DELIVERY IN SECOND PREGNANCY IN WOMEN WHO HAD ELECTIVE CAESAREAN SECTION FOR BREECH PRESENTATION IN FIRST PREGNANCY.
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Azeem R, Kokeb S, Inayat K, Danish N, Nelofer T, and Saifullah S
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- Humans, Female, Pregnancy, Adult, Cross-Sectional Studies, Young Adult, Adolescent, Middle Aged, Delivery, Obstetric methods, Delivery, Obstetric statistics & numerical data, Pakistan, Breech Presentation surgery, Cesarean Section statistics & numerical data, Elective Surgical Procedures
- Abstract
Background: The optimal management of breech presentation remains a debate among obstetricians worldwide. The Term Breech Trial (2000) highlighted elective caesarean section as a preferable method over vaginal delivery for breech presentations. This study investigates delivery modes in women who had an elective caesarean section for breech presentation in their first pregnancy. Objective was to evaluate delivery outcomes in the second pregnancy of women who had an elective caesarean section for breech presentation in their first pregnancy., Methods: A cross-sectional study was conducted at Jinnah International Hospital Abbottabad from October 10, 2018, to April 10, 2019. Data was collected from 321 women who had an elective caesarean section for breech presentation during their first pregnancy. The study used per-abdominal examination and obstetrical ultrasound to assess foetal presentation and recorded the mode of delivery in the second pregnancy., Results: Participants' ages ranged from 18 to 49 years, with a mean age of 28.87±4.07 years. The average interval between deliveries was 1.92±0.92 years, labour duration averaged 5.56±2.41 hours, and foetal head engagement averaged 2.92±1.35. Of the participants, 18.7% achieved a vaginal delivery, while 81.3% had a repeat caesarean section. Reasons for repeat caesarean included recurrent breech presentation in 44.9% and foetal distress in 32.4%., Conclusions: Approximately 18.7% of women who had an elective caesarean section for breech presentation in their first pregnancy achieved vaginal delivery in their second pregnancy, whereas the majority underwent another elective caesarean section.
- Published
- 2024
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37. The COMPARE head-to-head, randomized controlled trial of SEL-212 (pegadricase plus rapamycin-containing nanoparticle, ImmTOR™) versus pegloticase for refractory gout.
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Baraf HSB, Khanna PP, Kivitz AJ, Strand V, Choi HK, Terkeltaub R, Dalbeth N, DeHaan W, Azeem R, Traber PG, and Keenan RT
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- Adult, Humans, Gout Suppressants adverse effects, Gout Suppressants therapeutic use, Polyethylene Glycols adverse effects, Polyethylene Glycols therapeutic use, Symptom Flare Up, Treatment Outcome, Urate Oxidase therapeutic use, Urate Oxidase adverse effects, Uric Acid, Uricosuric Agents adverse effects, Uricosuric Agents therapeutic use, Gout, Stomatitis chemically induced, Stomatitis drug therapy
- Abstract
Objectives: Serum urate (SU) lowering with PEGylated uricases in gout can reduce flares and tophi. However, treatment-emergent anti-drug antibodies adversely affect safety and efficacy and the currently approved PEGylated uricase pegloticase requires twice-monthly infusions. Investigational SEL-212 therapy aims to promote uricase-specific tolerance via monthly sequential infusions of a proprietary rapamycin-containing nanoparticle (ImmTOR) and pegadricase., Methods: COMPARE was a randomized, phase 2, open-label trial of SEL-212 vs pegloticase in adults with refractory gout. SEL-212 [ImmTOR (0.15 mg/kg) and pegadricase (0.2 mg/kg)] was infused monthly or pegloticase (8 mg) twice monthly for 6 months. The primary endpoint was the proportion of participants with SU <6 mg/dl for ≥80% of the time during 3 and 6 months. Secondary outcomes were mean SU, gout flares, number of tender and/or swollen joints and safety., Results: During months 3 and 6 combined, numerically more participants achieved and maintained a SU <6 mg/dl for ≥80% of the time with SEL-212 vs pegloticase (53.0% vs 46.0%, P = 0.181). The percentage reductions in SU levels were statistically greater during months 3 and 6 with SEL-212 vs pegloticase (-73.79% and -47.96%, P = 0.0161). Reductions in gout flare incidence and number of tender and/or swollen joints were comparable between treatments. There were numerical differences between the most common treatment-related adverse events of interest with SEL-212 and pegloticase: gout flares (60.2% vs 50.6%), infections (25.3% vs 18.4%) and infusion-related reactions (15.7% vs 11.5%), respectively. Stomatitis (and related terms) was experienced by eight participants (9.6%) with SEL-212 and none with pegloticase. Stomatitis, a known event for rapamycin, was associated with ImmTOR only., Conclusions: SEL-212 efficacy and tolerability were comparable to pegloticase in refractory gout. This was associated with a substantial reduction in treatment burden with SEL-212 due to decreased infusion frequency vs pegloticase., Clinical Trial Registration: NCT03905512., (© The Author(s) 2023. Published by Oxford University Press on behalf of the British Society for Rheumatology.)
- Published
- 2024
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38. Phase 2 Dose-Finding Study in Patients with Gout Using SEL-212, a Novel PEGylated Uricase (SEL-037) Combined with Tolerogenic Nanoparticles (SEL-110).
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Kivitz A, DeHaan W, Azeem R, Park J, Rhodes S, Inshaw J, Leung SS, Nicolaou S, Johnston L, Kishimoto TK, Traber PG, Sands E, and Choi H
- Abstract
Introduction: SEL-212 is a developmental treatment for uncontrolled gout characterized by serum uric acid (sUA) levels ≥ 6 mg/dl despite treatment. It comprises a novel PEGylated uricase (SEL-037; also called pegadricase) co-administered with tolerogenic nanoparticles containing sirolimus (rapamycin) (SEL-110; also called ImmTOR
® ), which mitigates the formation of anti-drug antibodies (ADAs) against uricase and SEL-037 (PEGylated uricase), thereby enabling sustained sUA control (sUA < 6 mg/dl). The aim of this study was to identify appropriate dosing for SEL-037 and SEL-110 for use in phase 3 clinical trials., Methods: This open-label phase 2 study was conducted in adults with symptomatic gout and sUA ≥ 6 mg/dl. Participants received five monthly infusions of SEL-037 (0.2 or 0.4 mg/kg) alone or in combination with three or five monthly infusions of SEL-110 (0.05-0.15 mg/kg). Safety, tolerability, sUA, ADAs, and tophi were monitored for 6 months., Results: A total of 152 adults completed the study. SEL-037 alone resulted in rapid sUA reductions that were not sustained beyond 30 days in most participants due to ADA formation and loss of uricase activity. Levels of ADAs decreased with increasing doses of SEL-110 up to 0.1 mg/kg, with anti-uricase titers < 1080 correlating with sustained sUA control and reductions in tophi. Overall, 66% of evaluable participants achieved sUA control at week 20 following five monthly doses of SEL-037 0.2 mg/kg + SEL-110 0.1-0.15 mg/kg, whereas only 26% achieved sUA control at week 20 when SEL-110 was withdrawn after week 12. Compared to other dose combinations, SEL-037 0.2 mg/kg + SEL-110 0.15 mg/kg achieved the greatest sUA control at week 12 and was well-tolerated with no safety concerns., Conclusion: Results provide continued support for the use of multiple monthly administrations of SEL-037 0.2 mg/kg + SEL-110 0.1-0.15 mg/kg in clinical trials for SEL-212., Trial Registration: ClinicalTrials.gov identifier, NCT02959918., (© 2023. The Author(s).)- Published
- 2023
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39. Allelic Discrimination of Vitamin D Receptor Polymorphisms and Risk of Type 2 Diabetes Mellitus: A Case-Controlled Study.
- Author
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Mohammed AA, El-Matty DMA, Abdel-Azeem R, Raafat K, Hussein MA, El-Ansary AR, Hafez W, Hassan HA, Nassar NA, Selim NM, Ghaith D, Kholy AAE, Abd El Salam SM, Anouti FA, and Wahba AS
- Abstract
(1) Background: Type 2 diabetes mellitus (T2DM) is one of the rapidly growing healthcare problems, and several vitamin D receptor (VDR) polymorphisms seem to modulate the risk of T2DM. Our research was designed to investigate the allelic discrimination of VDR polymorphisms and T2DM occurrence risk. (2) Methods: This case-control research included 156 patients with T2DM and 145 healthy control subjects. Most of the study population were males 56.6% vs. 62.8% in the case and control groups, respectively. Genotyping for VDR single nucleotide polymorphisms (SNPs), rs228570 (Fok1), rs7975232 (Apa1), and rs1544410 (Bsm1) was compared between both groups. (3) Results: There was a negative link between vitamin D levels and insulin sensitivity. A significant difference was noted in the allelic discrimination of VDR polymorphism rs228570 and rs1544410 between the study groups ( p < 0.001). No difference was observed in the allelic discrimination of VDR polymorphism rs7975232 between the groups ( p = 0.063). Moreover, T2DM patients had significantly higher levels of fasting blood sugar (FBS), glycated hemoglobin HbA1c, 2-h post-prandial blood sugar (PP), serum glutamic oxaloacetic transaminase (SGOT), serum glutamic-pyruvic transaminase (SGPT), total cholesterol, and triglycerides ( p < 0.001), while High-Density Lipoprotein (HDL) Cholesterol (HDL-C) was significantly decreased ( p = 0.006). (4) Conclusions: VDR polymorphisms had a positive association with T2DM risk among the Egyptian population. Further large-scale research using deep sequencing of samples is strongly urged to investigate different vitamin D gene variants and interactions, as well as the influence of vitamin D on T2DM.
- Published
- 2023
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40. Prevalence of Suicide Ideation and its Relationship with Depression among Transgender Population.
- Author
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Azeem R, Zubair UB, Jalil A, Kamal A, Nizami A, and Minhas F
- Subjects
- Adult, Cross-Sectional Studies, Depression diagnosis, Depression psychology, Depressive Disorder, Major psychology, Female, Humans, Intention, Male, Pakistan epidemiology, Prevalence, Psychiatric Status Rating Scales, Severity of Illness Index, Socioeconomic Factors, Suicide psychology, Suicide, Attempted psychology, Transgender Persons statistics & numerical data, Depression epidemiology, Depressive Disorder, Major epidemiology, Substance-Related Disorders epidemiology, Suicidal Ideation, Suicide statistics & numerical data, Suicide, Attempted statistics & numerical data, Transgender Persons psychology
- Abstract
Objective: To record the prevalence of suicidal ideation in the transgender population and assess the relationship of depression with the suicidal ideation., Study Design: Cross-sectional study., Methodology: The study group comprised of 156 transgender people of Rawalpindi and Islamabad. Suicidal ideation was assessed by the scale for suicide ideation (SSI). Hamilton rating scale for depression (HAM-D) was used to look for the presence and severity of depression among the target population. Relationship of the age, smoking, family income, illicit substance use, and depression was studied with the presence of suicidal intent among these transgender population of twin cities., Results: One hundred and fifty-six transgender people were included in this study. Mean age of the study participants was 39.26 ±4.28 years. Out of them, 89 (57.1%) had no suicidal ideations, while 67 (42.9%) had suicidal ideation. Fifty-seven (36.5%) did not showed depression, while 99 (63.5%) had depression on HAM-D. With binary logistic regression, depression and illicit substance were found to be significantly related to the presence of suicidal ideations in the target population (p <0.05)., Conclusion: A high prevalence of suicidal ideation among the transgender population of twin cities was found in this study. Depression, illicit substance use, and other mental health illnesses should be screened routinely on this high risk population for early recognition and treatment.
- Published
- 2019
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41. Efficacy and Safety of ITCA 650, a Novel Drug-Device GLP-1 Receptor Agonist, in Type 2 Diabetes Uncontrolled With Oral Antidiabetes Drugs: The FREEDOM-1 Trial.
- Author
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Rosenstock J, Buse JB, Azeem R, Prabhakar P, Kjems L, Huang H, and Baron MA
- Subjects
- Administration, Oral, Adult, Aged, Aged, 80 and over, Body Weight drug effects, Double-Blind Method, Drug Delivery Systems methods, Exenatide, Female, Glucagon-Like Peptide-1 Receptor agonists, Glycated Hemoglobin metabolism, Humans, Hypoglycemic Agents adverse effects, Male, Middle Aged, Placebos, Sulfonylurea Compounds administration & dosage, Sulfonylurea Compounds adverse effects, Treatment Outcome, Young Adult, Diabetes Mellitus, Type 2 drug therapy, Drug Delivery Systems instrumentation, Hypoglycemic Agents administration & dosage, Peptides administration & dosage, Peptides adverse effects, Venoms administration & dosage, Venoms adverse effects
- Abstract
Objective: ITCA 650 (exenatide in osmotic mini-pump) continuously delivers exenatide subcutaneously for 3-6 months. Two doses of ITCA 650 were compared with placebo in patients with uncontrolled type 2 diabetes., Research Design and Methods: This 39-week, phase 3, double-blind, placebo-controlled trial randomized 460 patients aged 18-80 years with glycated hemoglobin (HbA
1c ) 7.5-10% [58-86 mmol/mol] 1:1:1 to placebo, ITCA 650 40 μg/day, or ITCA 650 60 μg/day. Primary end point was change in HbA1c at 39 weeks., Results: Least squares (LS) mean change from baseline HbA1c was -1.1% [-12.2 mmol/mol] and -1.2% [-13.2 mmol/mol] for ITCA 650 40 and 60 μg/day, respectively ( P < 0.001 vs. placebo -0.1% [-1.3 mmol/mol]). In a prespecified analysis, greater HbA1c reductions occurred in patients not receiving sulfonylureas (SUs) versus those receiving SUs (-1.7% vs. -1.2% [-18.6 and -13.1 mmol/mol]). At week 39, HbA1c <7% [53 mmol/mol] was attained in 37%, 44%, and 9% of ITCA 650 40 μg/day, ITCA 650 60 μg/day, and placebo groups, respectively ( P < 0.001 each dose vs. placebo). LS mean change from baseline body weight was -2.3 kg and -3.0 kg for ITCA 650 40 and 60 μg/day, respectively ( P ≤ 0.015 vs. placebo -1.0 kg). Nausea was the most common adverse event (AE) and subsided over time. Discontinuation for gastrointestinal AEs occurred in 7.2% with ITCA and 1.3% with placebo. Most AEs associated with procedures to place and remove ITCA 650 were mild and transient., Conclusions: ITCA 650 significantly reduced HbA1c and weight compared with placebo and was well tolerated in patients with uncontrolled type 2 diabetes on oral antidiabetes medications., (© 2017 by the American Diabetes Association.)- Published
- 2018
- Full Text
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