Michael key Veterans Affairs Medical Center

Houston, TX, United States

Michael key Veterans Affairs Medical Center

Houston, TX, United States
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PubMed | Columbia University, Minneapolis Heart Institute and Minneapolis Heart Institute Foundation, Michael key Veterans Affairs Medical Center and Baylor College of Medicine
Type: Journal Article | Journal: Current atherosclerosis reports | Year: 2016

Cardiovascular disease (CVD) is the leading cause of morbidity and mortality worldwide. Despite the success of treatment of CVD with statin therapy, a number of patients remain at high risk for CVD. Ezetimibe is a non-statin agent that inhibits intestinal cholesterol absorption, leading to reductions in low-density lipoprotein cholesterol (LDL-C). A number of clinical studies evaluating the use of ezetimibe therapy have resulted in discordant data regarding its safety and efficacy. In this review, we discuss the findings from these studies as well as potential indications for the use of ezetimibe for LDL-C lowering and cardiovascular event reduction.

PubMed | Lehigh Valley Health Network, Michael key Veterans Affairs Medical Center, University of Texas Medical Branch, Research Service and Baylor College of Medicine
Type: Journal Article | Journal: Acta neurologica Scandinavica | Year: 2016

Levodopa treatment has been shown to improve gait spatio-temporal characteristics in both forward and backward walking. However, effect of levodopa on gait variability during backward walking compared with forward walking has not been reported.To study the effects of levodopa on gait variability of forward and backward walking in individuals with Parkinsons disease (PD).Forty individuals with PD were studied. Their mean age was 68.70 7.46 year. The average time since diagnosis was 9.41 5.72 year. Gait variability was studied while OFF and ON levodopa when the participants walked forward and backward at their usual speed. Variability in step time, swing time, stride length, double support time, and stride velocity were compared between medication condition and walking direction.Variability of step time, swing time, stride length, and stride velocity decreased significantly during forward and backward walks (P < 0.001; P < 0.001; P = 0.003, P = 0.001, respectively) after levodopa administration. Variability of double support time was not changed after levodopa administration (P = 0.054).Levodopa had positive effects on gait variability of forward and backward walking in individuals with PD. However, variability in double support time was not affected by the levodopa.

PubMed | The Menninger Clinic, Michael key Veterans Affairs Medical Center, University of Houston and Baylor College of Medicine
Type: Journal Article | Journal: Bulletin of the Menninger Clinic | Year: 2016

Recently, the National Institute of Mental Health (NIMH) introduced the Research Domain Criteria (RDoC) initiative to address two major challenges facing the field of psychiatry: (1) the lack of new effective personalized treatments for psychiatric disorders, and (2) the limitations associated with categorically defined psychiatric disorders. Although the potential of RDoC to revolutionize personalized psychiatric medicine and psychiatric nosology has been acknowledged, it is unclear how to implement RDoC in naturalistic clinical settings as part of routine outcomes research. In this article, the authors present the major RDoC principles and then show how these principles are operationalized in The Menninger Clinics McNair Initiative for Neuroscience Discovery-Menninger & Baylor College of Medicine (MIND-MB) study. The authors discuss how RDoC-informed outcomes-based assessment in clinical settings can transform personalized clinical care through multimodal treatments.

Corrales-Medina V.F.,University of Ottawa | Madjid M.,Baylor College of Medicine | Madjid M.,University of Texas Health Science Center at Houston | Madjid M.,Texas Heart Institute | And 2 more authors.
The Lancet Infectious Diseases | Year: 2010

Acute coronary syndromes are a leading cause of morbidity and mortality worldwide. The mechanisms underlying the triggering of these events are diverse and include increased coronary and systemic inflammatory activity, dominant prothrombotic conditions, increased biomechanical stress on coronary arteries, variations in the coronary arterial tone, disturbed haemodynamic homoeostasis, and altered myocardial metabolic balance. There is experimental evidence that acute infections can promote the development of acute coronary syndromes, and clinical data strongly support a role for acute infections in triggering these events. In our Review, we summarise the pathogenesis of coronary artery disease and present the evidence linking acute infections with the development of acute coronary syndromes. Greater awareness of this association is likely to encourage research into ways of protecting patients who are at high risk. © 2010 Elsevier Ltd. All rights reserved.

Al-Mohtaseb Z.,Baylor College of Medicine | Heffez J.L.,Baylor College of Medicine | Carvounis P.E.,Baylor College of Medicine | Carvounis P.E.,Michael key Veterans Affairs Medical Center | Holz E.R.,Baylor College of Medicine
Eye | Year: 2010

Purpose: To evaluate demarcation laser photocoagulation (DLP) for macula-sparing rhegmatogenous retinal detachments (RRD) with and without symptoms of posterior vitreous separation or progressive visual field defect. Methods: Retrospective, interventional, single surgeon case series of consecutive patients with RRD treated with demarcation laser photocoagulation between March 1999 and February 2008 at an academic center. The null hypothesis was that there exists no difference in the rate of progression for retinal detachment irrespective of the presence ('symptomatic') or absence ('asymptomatic') of symptoms of posterior vitreous separation or visual field defect at presentation. Results: A total of 27 eyes of 26 patients were included in the study. In all, 22 of the 27 eyes (81.4%) did not require additional treatment and remained attached during mean follow-up of 38.4 months. None of the 14 asymptomatic patients required surgery (0%) whereas 5 out of the 13 patients (38.5%) who were symptomatic at presentation required further intervention (p = 0.016): one patient required additional laser only and four patients required scleral buckling or vitrectomy. Pre- and post- DLP logMAR visual acuity was 0.15 and 0.14, respectively. Conclusion: Demarcation laser photocoagulation is an effective alternative to scleral buckling or vitrectomy for treating asymptomatic RRDs. It has a high failure rate among eyes with symptomatic RRD. © 2010 Macmillan Publishers Limited All rights reserved.

Malaty H.M.,Baylor College of Medicine | Malaty H.M.,Michael key Veterans Affairs Medical Center | Hou J.K.,Baylor College of Medicine | Hou J.K.,Michael key Veterans Affairs Medical Center | Thirumurthi S.,Baylor College of Medicine
Clinical and Experimental Gastroenterology | Year: 2010

Background: Environmental factors, including socioeconomic status, may affect inflammatory bowel disease (IBD). There is a paucity of data on the epidemiology of IBD among patients of low socioeconomic status. Aim: To examine the epidemiologic features of IBD among African-American, Hispanic, and Caucasian patients from a county hospital, where the majority of the patients are socioeconomically disadvantaged. Methods: A retrospective study was conducted on a cohort of patients diagnosed with IBD based on clinical, radiologic, endoscopic, and histological data. We reviewed charts of adults aged 20-70 years diagnosed with IBD between 2000 and 2006. Demographic data, disease subtype, and phenotypic features of IBD were recorded based on the Montreal Classification. The data were analyzed using the chi-square, Fisher exact, Wilcoxon rank-sum, and Student's t-tests. Results: The study cohort included 273 patients, with 54% female, 30% Caucasian, 44% African-American, and 26% Hispanic. Over half (54%) of the patients had Crohn's disease (CD), and 46% had ulcerative colitis (UC). The mean age at diagnosis was 40 ± 14 years with no significant difference between CD and UC (age 43 ± 13 versus 44.5 ± 14, respectively; P = 0.5). Females were diagnosed at a significantly later age than males (46 ± 13 years versus 40 ± 13, respectively; P = 0.001). This trend remained significant for females with CD and UC, and across each racial/ethnic group. Hispanic patients were diagnosed with UC more often than Caucasian patients (64% versus 34%; odds ratio [OR] 3.5; 95% confidence interval [CI]: 1.8-6.5, P = 0.0003) or African-Americans (64% versus 43%; OR 2.3; 95% CI: 1.3-4.3, P = 0.005). Among the 147 patients with CD, 54% had fistulizing and/or stricturing disease. The prevalence of fistulizing, stricturing, and inflammatory CD was similar across all age, gender, and racial/ ethnic groups. Conclusions: Within an indigent population, UC was diagnosed more often in Hispanics than CD. Females were diagnosed at a significantly older age than males across all racial/ethnic groups. There was no difference in the CD phenotypes between the three ethnic groups. Understanding the epidemiology of IBD will require examination of the interactions between gender, race/ ethnicity, and environmental factors. © 2010 Malaty et al, publisher and licensee Dove Medical Press Ltd.

Tavakoli-Tabasi S.,Michael key Veterans Affairs Medical Center | Tavakoli-Tabasi S.,Baylor College of Medicine | Ninan S.,Michael key Veterans Affairs Medical Center
Digestive Diseases and Sciences | Year: 2011

Background: Patients with chronic hepatitis C (HCV) infection commonly have perihepatic lymph node enlargement (PLNE). We investigated the prognostic value of PLNE in the development of complicated cirrhosis and death, as well as the clinical and laboratory factors associated with the presence of PLNE in a cohort of HCV-infected veterans. Methods: Using a retrospective cohort design, we compared the rate of development of decompensated cirrhosis and/or death in a group of HCV-infected patients who did not have evidence of decompensated cirrhosis stratified by the presence or absence of PLNE. We used Kaplan-Meier survival curves. We then evaluated which factors were predictive of detection of PLNE using logistic regression. Results: A total of 131 patients were included in the study. Fifty-nine patients had PLNE and 72 patients did not. After a mean follow-up of 42 months, survival in the absence of progression to decompensated cirrhosis and/or death was not significantly different between the two groups (log-rank test, p = 0.27). The only factor predictive of progression to decompensated cirrhosis and/or death was the presence of cirrhosis at baseline (HR 13.13, 95% CI 2.21-79.41). In addition, cirrhosis was the only factor predictive of the detection of PLNE on CT scan (OR 3.09: CI 2.1-25.9). Conclusions: Presence of PLNE in patients with chronic HCV infection is strongly associated with subclinical cirrhosis. However, PLNE does not independently predict the progression of liver disease to decompensated cirrhosis and/or death in HCV-infected patients. © 2011 Springer Science+Business Media, LLC.

Tavakoli-Tabasi S.,Michael key Veterans Affairs Medical Center | Tavakoli-Tabasi S.,Baylor College of Medicine | Bagree A.,University of Texas Health Science Center at Houston
Journal of Clinical Gastroenterology | Year: 2012

Goals: To describe dermatologic side effects encountered during treatment of patients with chronic hepatitis C, and analyze factors predisposing to such reactions. Background: Treatment of hepatitis C virus (HCV) infection with interferon (IFN) and ribavirin is associated with a number of mucocutaneous adverse reactions that have not been adequately studied. Study: A retrospective cohort study design was used to longitudinally describe mucocutaneous drug eruptions during IFN and ribavirin therapy in HCV-infected patients. Factors predictive of mucocutaneous eruptions were analyzed by the use of Kaplan-Meier curves and Cox proportional hazard model. Results: A total of 286 HCV-infected consecutive patients were treated with one of the IFNα formulations plus ribavirin. The mean age was 51.1 years (SD 5.6). There were 6 female patients. There were 5 patients who were also infected with human immunodeficiency virus (HIV). Fifty-six percent of the patients were white, 37% were African American, and 14% were Hispanic. Twenty-one percent of all study patients developed mucocutaneous drug eruptions. The most common drug eruptions were eczematous drug eruptions (48%), seborrheic dermatitis (11%), and xerosis (8%). Dermatologic eruptions were a contributing factor in the decision to discontinue antiviral treatment in 10% of cases. Use of Pegylated IFN formulations (hazard ratio=1.86; 95% confidence interval, 1.04-3.34) and presence of HIV coinfection (hazard ratio=4.46; 95% confidence interval, 1.61-12.92) were associated with increased rate of skin reactions. Conclusions: Mucocutaneous reactions during IFN and ribavirin treatment of hepatitis C are common and are associated with HIV infection and use of Pegylated IFN. Copyright © 2012 by Lippincott Williams & Wilkins.

Shahani L.,Baylor College of Medicine | Shah M.,Baylor College of Medicine | Tavakoli-Tabasi S.,Baylor College of Medicine | Tavakoli-Tabasi S.,Michael key Veterans Affairs Medical Center
BMJ Case Reports | Year: 2015

Progressive multifocal leukoencephalopathy (PML) is a severe opportunistic infection of the central nervous system. A 52-year-old man with HIV infection, recently started on antiretroviral therapy, presented with symptoms of mental cloudiness, blurry vision and ataxia. MRI of the brain showed nodular perivascular space enhancement with surrounding vasogenic oedema and midline shift. A lumbar puncture revealed noninflammatory cerebrospinal fluid and was positive for JC virus. As the patient developed worsening symptoms in the setting of initiation of antiretroviral therapy with immune recovery, a diagnosis of JC virus-associated immune reconstitution inflammatory syndrome (IRIS) was made. With recent literature on the use of CCR5 antagonist maraviroc in PML, our patient was started on maraviroc and noted to have improvement in PML IRIS. This is the first case of an HIV-positive patient successfully treated for PML IRIS with maraviroc, as verified by our literature review; also, our case has clinical implications in improving outcome in PML IRIS. Copyright 2015 BMJ Publishing Group.

PubMed | Michael key Veterans Affairs Medical Center
Type: Journal Article | Journal: World journal of cardiology | Year: 2016

To review methods of assessing adherence and strategies to improve adherence to cardiovascular disease (CVD) medications, among South Asian CVD patients.We conducted a systematic review of English language studies that examined CVD medication adherence in South Asian populations from 1966 to April 1, 2015 in SCOPUS and PubMed. Working in duplicate, we identified 61 studies. After exclusions, 26 studies were selected for full text review. Of these, 17 studies were included in the final review. We abstracted data on several factors including study design, study population, method of assessing adherence and adherence rate.These studies were conducted in India (n = 11), Pakistan (n = 3), Bangladesh (n = 1), Nepal (n = 1) and Sri Lanka (n = 1). Adherence rates ranged from 32%-95% across studies. Of the 17 total publications included, 10 focused on assessing adherence to CVD medications and 7 focused on assessing the impact of interventions on medication adherence. The validated Morisky Medication Adherence Scale (MMAS) was used as the primary method of assessing adherence in five studies. Three studies used validated questionnaires similar to the MMAS, and one study utilized Medication Event Monitoring System caps, with the remainder of the studies utilizing pill count and self-report measures. As expected, studies using non-validated self-report measures described higher rates of adherence than studies using validated scale measurements and pill count. The included intervention studies examined the use of polypill therapy, provider education and patient counseling to improve medication adherence.The overall medication adherence rates were low in the region, which suggest a growing need for future interventions to improve adherence.

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