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Introduction Autosomal dominant polycystic kidney disease (ADPKD) is the most common monogenic disorder that affects the kidney, which affects all ethnical groups worldwide, with varied clinical presentations and severity. The studies done in various parts of the world on the association between angiotensin II type 1 receptor (AT1R) A1166C gene polymorphism and ADPKD patients have revealed inconsistent results. This study was done to assess the role of AT1R A1166C gene polymorphism in ADPKD in the South Indian population, which is the first of its kind. Methodology This is a case-control study, conducted at a tertiary care center in South India. This study was concerned with the frequency of exposure (genotype) in ADPKD patients. Peripheral blood samples from 85 unrelated ADPKD patients and 94 controls without diabetes, hypertension, or any kidney-related disease were collected. The AT1R A1166C polymorphism was compared between (i) the cases and controls, (ii) early and late stages of chronic kidney disease (CKD) (ADPKD) subjects, and (iii) ADPKD subjects with and without hypertension. Results Among the ADPKD patients, 45 (52.9%) subjects showed early stage (CKD stages 1-3), and 40 (47%) subjects showed late stage CKD (CKD stages 4 and 5). The genotype distribution of the studied 85 ADPKD patients was almost similar. No significant association was found between the genotype distribution of AT1R A1166C polymorphism in AA vs. AC (OR = 1.11; 95% CI = 0.37-3.32; p < 0.844) and A vs. C (OR = 1.11; 95% CI = 0.38-3.32; p < 0.847) between cases and controls. The genotype distributions in genetic model AA vs. AC (OR = 3.07; 95% CI = 0.56-16.8; p < 0.177) and allelic model A vs. C (OR = 2.13; 95% CI = 0.40-11.3; p < 0.364) between the early and late CKD stages of ADPKD were also not significant. No significant association of gene polymorphism was found between the non-hypertensive and hypertensive groups of ADPKD. Conclusion The results of our study suggest there is no significant association between AT1R A1166C polymorphisms and ADPKD in the South Indian population. Further, the gene polymorphism is not related to the progression of ADPKD or the presence of hypertension in ADPKD cases in South India.
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INTRODUCTION: The uplift of SARS-CoV-2 infection has necessitated the understanding of long-term consequences in the affected population. This study was driven by a lack of Indian studies to estimate the torment of post-coronavirus disease 2019 (COVID-19) symptoms and the quality of life. METHODS: This prospective observational study was conducted in a tertiary care centre in South India, between August and November 2020. SARS-CoV-2 hospitalised patients were telephonically questioned regarding the persistence of symptoms along with an assessment of the quality of life using the 15D questionnaire in the first, second, and fourth weeks. Since a majority of the patients had resolution of symptoms by four weeks, the study was not extended for a longer period. RESULTS: The study included 476 patients whose mean length of hospital stay was 7.67 days. Of the patients, 68.7% had mild severity, 24.8% had moderate disease, and 6.5% had severe disease. About 28.4% required oxygen, 8.2% required ICU care, and 1.3% required mechanical ventilation. Myalgia (13.9%), cough (1.3%), and dyspnoea (6.1%) were the predominant persistent symptoms in the fourth-week post-discharge. All the symptoms of health-related quality of life and physical performance improved by the fourth week, which was statistically significant. CONCLUSION: Our study findings are in stark contrast to the studies published from other regions of the world, which show a significant worsening of quality of life even among those with mild illness.
