Background:Transforming growth factor-beta 1 (TGF-β1) is a multifunctional pleiotropic cytokine involved in inflammation and pathogenesis of cerebrovascular diseases. There is limited information on the association between variations within the TGF-β1 gene polymorphisms and risk of ischemic stroke (IS). The aim of this study was to investigate the association of the TGF-β1 gene (C509T, G800A, and T869C) polymorphisms, and their haplotypes with the risk of IS in North Indian population.Methods:A total of 250 IS patients and 250 age- and sex-matched controls were studied. IS was classified using the Trial of Org 10172 in Acute Stroke Treatment classification. Conditional logistic regression analysis was used to calculate the strength of association between TGF-β1 gene polymorphisms and risk of IS. Genotyping was performed using SNaPshot method.Results:Hypertension, diabetes, dyslipidemia, alcohol, smoking, family history of stroke, sedentary lifestyle, and low socioeconomic status were found to be associated with the risk of IS. The distribution of C509T, G800A and T869C genotypes was consistent with Hardy-Weinberg Equilibrium in the IS and control groups. Adjusted conditional logistic regression analysis showed a significant association of TGF-β1 C509T (odds ratio [OR], 2.1; 95% CI; 1.2–3.8; P = 0.006), G800A (OR, 4.4; 95% CI; 2.1–9.3; P < 0.001) and T869C (OR, 2.6; 95% CI; 1.5–4.5; P = 0.001) with the risk of IS under dominant model. Haplotype analysis showed that C509-A800-T869 and T509-G800-C869 haplotypes were significantly associated with the increased risk of IS. C509T and T869C were in strong linkage disequilibrium (D' =0.51, r2 = 0.23).Conclusion:Our results suggest that TGF-β1 polymorphisms and their haplotypes are significantly associated with the risk of IS in North Indian population.
Lenalidomide (LND) is an analogue of thalidomide that is second generation immunomodulatory drugs (IMiDs). LND contains asymmetric carbon atom and exist R and S enantiomer. S (À) form of enantiomer are considered to be more potent and biologically active in tumor cell. It is available in racemic form for clinical use. The study aims to develop and validate enantiomer separation of LND in human plasma. The chromatographic enantiomeric separation was achieved on a Daicel-CSP, Chiralpack IA 4.6 Â 250 mm_5 μm. The mobile phase was constituted in combination of methanol:glacial acetic acid at a concentration of 499.50 ml: 50 μl. UV wavelength detection was 220 nm. The RSD% for all validation parameters was found to be within the acceptable limit. The chiral chromatographic (chiral stationary phase-high-performance liquid chromatography [CSP-HPLC]) method developed and validated for the quantitative estimation of LND enantiomers S (À) and R (+) in human plasma sample is accurate, precise, robust, stable and selective.
Background: Chronic neuropathic pain, caused by a lesion or disease of the somatosensory nervous system is a common debilitating condition in clinical practice. Pregabalin and Amitriptyline are most commonly used drugs for its management. The aim of the study was to study the safety of Pregabalin and Amitriptyline in chronic neuropathic pain.Methods: Prospective observational study at Department of Medicine and Orthopaedics at All India Institute of Medical Sciences, Rishikesh. Newly diagnosed patients of neuropathic pain who were prescribed either Pregabalin or Amitriptyline were included in the study. Patients were followed up telephonically or during routine visits for a period of 3 months after initiation of any of these drugs. Appropriate measures of central tendency were used to describe demographic and clinical parameters and Correlation test was used between different variables and occurrence of adverse drug reactions.Results: 317 patients were prescribed these drugs. A total of 276 ADRs were observed (128 with Pregabalin and 148 with Amitriptyline). Central nervous system symptoms like sedation and dizziness were most commonly present in both the groups. Diabetes mellitus (47.1%) was most common etiology for neuropathic pain. Causality assessment showed probable association with Amitriptyline (n=140) and Pregabalin (n=118). Majority of ADRs with Amitriptyline group (49.32%) were moderate in severity whereas it was mild with Pregabalin (59.7%). A weak positive correlation (R=0.273) was seen with number of ADRs occurrence and total drug exposure in patients taking Pregabalin whereas a weak negative correlation (R=-0.623) was seen in Amitriptyline treated group.Conclusions: Safety profile of Pregabalin was better than Amitriptyline in the present study. The study findings must be replicated in larger patient population and for a prolonged duration for better understanding of the pattern of adverse drug reactions.
In ischemic stroke patients, aspirin resistance has been linked to an altered lipid profile. This study was undertaken to explore the association of blood lipid profiles with aspirin resistance in ischemic stroke patients. Relevant studies published before November 2022 in PubMed, Medline, EMBASE, and Google Scholar were chosen for this study. Random effects models were used to assess pooled standardized mean and standard deviation (SD) with a 95% confidence interval (CI). RevMan 5 and STATA version 13.0 software were used for statistical analysis. Subjects from eight studies consisting of aspirin resistance and sensitive data were considered in this meta-analysis. Our findings suggested a significant association between the elevated levels of TG in Aspirin resistance groups as compared to non-resistance (SMD 0.83, 95% CI 0.30 to 1.95, p-value < 0.001). However, the meta-influence analysis suggested no significant association when a study with a large effect size was excluded. The results of our comprehensive meta-analysis suggest none of the lipid parameters were significantly associated with aspirin resistance. Further studies might be required to support the findings of this meta-analysis.
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