Publications by authors named "Medha Rajappa"

CKD progression is associated with declining vitamin D levels, which correlate with various comorbidities. Total serum 25-hydroxyvitamin D (Total-25(OH)D) may not accurately reflect vitamin D deficiency in these patients. This study aimed to evaluate the vitamin D spectrum in CKD and kidney transplant recipients (KTRs).

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Epidermal Growth Factor Receptor (EGFR) signalling is thought to be involved in the pathogenesis of pemphigus vulgaris. The objective was to assess the cutaneous EGFR mRNA expression and serum soluble EGFR (sEGFR) levels among Pemphigus patients in comparison to the healthy controls. This was a cross-sectional study with a longitudinal follow up.

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Introduction: Autophagy plays a role in chemotherapy resistance by facilitating cell survival under stress conditions in many malignancies, including ovarian cancers. The use of ascitic fluid to study autophagy biomarkers is an emerging approach, with potential advantages over tissue-based studies in cancer research. This study aimed to standardize reproducible laboratory methods for detecting and quantifying autophagy biomarkers in the ascitic fluid of ovarian cancer patients.

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The progressive degradation of the renal parenchyma and reduction of functional nephrons characterise chronic kidney disease (CKD). Disorders of bone mineral metabolism is one of the leading causes of morbidity and mortality in CKD. Calcium-sensing receptor (CASR) allows cells to detect changes in blood calcium levels and regulate its concentration.

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Background: Autophagy activation contributes to chemotherapy resistance in several cancers, including ovarian cancer. Hydroxychloroquine (HCQ) is an autophagy inhibitor inhibiting the fusion of the autophagosome with the lysosome and has been repurposed as an anti-cancer agent. In this randomized phase II study, we used HCQ in combination with standard chemotherapy in platinum sensitive relapsed ovarian cancer (PSROC) patients.

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Controlled Human Infection Studies (CHIS) involving the deliberate exposure of healthy individuals to infectious agents, are emerging as a valuable tool for medical research. This systematic survey explores the perceptions of ethics committee members from various Indian medical research institutions after participating in a sensitization workshop on CHIS. This cross-sectional study was conducted on the workshop participants through an online survey.

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Background: Polymorphisms in thiopurine methyltransferase (TPMT) are a predominant cause of azathioprine-induced leucopenia in Western countries. The exact role of these polymorphisms in the Indian population with dermatological disorders is uncertain.

Objectives: To evaluate the frequency of genetic polymorphism of TPMT and its impact on the safety of azathioprine in dermatological disorders.

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Background: Limited data exists on clinical predictors of kidney outcomes in children with lupus nephritis (LN).

Methods: Children aged below 18 years with biopsy-proven LN followed from January 2010 to February 2024 in a tertiary-care center were enrolled in order to characterize their clinical presentations, flares, infections, histology and determine Major Adverse Kidney Events (MAKE) (defined as eGFR < 60 mL/min/1.73 m and/or death).

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Background Chronic kidney disease (CKD) leads to a progressive decline in renal function, primarily due to deteriorating kidney structures. Vascular calcification is a key effect of CKD. MicroRNAs (miRNAs) play a significant role in the onset and progression of both cardiovascular illness and CKD.

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Background: Chronic kidney disease (CKD) is defined by gradual deterioration of renal parenchyma and decline of functioning nephrons. The risk of cardiovascular events is drastically increased in patients with CKD. This complicated link of CKD and cardiovascular disease (CVD) is not well understood till date.

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Article Synopsis
  • The study investigates factors contributing to acute kidney injury (AKI) during cardiac surgery, focusing on the difference in mean arterial pressure (MAP) before and during the procedure, as well as the role of plasma Neutrophil gelatinase-associated lipocalin (NGAL).
  • Conducted on 112 high-risk patients undergoing heart surgery, the research measured delta MAP and NGAL levels to find correlations with postoperative AKI occurrences using the KDIGO classification.
  • Results showed that a delta MAP greater than 25.67 mmHg was predictive of AKI, while serum NGAL levels were more strongly associated with early AKI, suggesting its potential as a biomarker for risk assessment after cardiac surgery.
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Objectives: Synaptic plasticity markers are known to alter in schizophrenia. The objective of the study was to investigate the genotype and allele frequency of neurotrophin-3 (NT-3) gene polymorphism (rs6489630, rs6332, and rs11063714) and plasma NT-3 levels in schizophrenia and their relation with cognitive status.

Materials And Methods: The study was conducted on 216 Schizophrenia patients and 216 controls.

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Background: Psoriasis is an immune-mediated, chronic inflammatory disease affecting mainly the skin. Chronic stress leads to the blunted hypothalamic-pituitary-adrenal axis (HPA) that might induce pro-inflammatory conditions. Hence, we assessed the blood levels of the HPA hormones and interleukin-17 (IL-17) and the effect of stress and emotional distress to understand the link between stress and psoriasis better.

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Controlled Human Infection Model (CHIM) studies provide a unique platform for studying the pathophysiology of infectious diseases and accelerated testing of vaccines and drugs in controlled settings. However, ethical issues shroud them as the disease-causing pathogen is intentionally inoculated into healthy consenting volunteers, and effective treatment may or may not be available. We explored the perceptions of the members of institutional ethics committees (IECs) in India about CHIM studies.

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Background: There is paucity of information regarding the etiology and outcomes of Acute Kidney Disease (AKD) in children.

Methods: The objectives of this cohort study were to evaluate the etiology and outcomes of AKD; and analyze predictors of kidney survival (defined as free of CKD 2, 3a, 3b, 4 or 5). Patients aged 1 month to 18 years who developed AKD over a 4-year-period (January 2018-December 2021) were enrolled.

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Background: Maculopapular drug eruption (MPE) in reaction to antibiotics is associated with enhanced expression of T-helper (Th)1 cytokines such as interferon gamma (IFN-gamma) or Th2 cytokines such as interleukin (IL)-5. Identifying the culprit drug usually involves rechallenge, which may not be forthcoming. Memory lymphocytes remain responsive to the culprit drug long after the reaction has resolved.

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Abnormal synaptic plasticity leads to cognitive impairment in schizophrenia. Markers of synaptic plasticity are known to be altered in schizophrenia, but there are limited data available about neural cell adhesion molecule-1 (NCAM-1) levels and its association with cognitive functions in schizophrenia. The objective of the study was to analyze NCAM-1 levels and its association with various cognitive domains in schizophrenia.

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Article Synopsis
  • A study in South India found that 9.1% of healthcare workers (HCWs) had a latex glove allergy, with irritant contact dermatitis as the most common symptom.
  • Risk factors for developing this allergy included having a history of allergic conditions, working in both wards and operating theaters, being part of the auxiliary staff, and having over ten years of experience in a hospital.
  • The researchers emphasized the need for education on proper glove use and moisturizing to prevent skin issues, along with calls for more research on latex allergy in healthcare settings, especially in developing countries.
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Chronic kidney disease (CKD) is defined by gradual deterioration of the renal parenchyma and decline of functioning nephrons. CKD is now recognized as a distinct risk factor for cardiovascular disease (CVD). This risk rises in tandem with the decline in kidney function and peaks at the end-stage.

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Objectives: To detect early atherosclerosis changes using flow-mediated dilation (FMD) of the brachial artery, carotid intima-media thickness (CIMT), inflammatory markers (hs-CRP, IL-6), and endothelial markers (sICAM and sVCAM).

Methods: The authors recruited 4 to 18-y-old children with type 1 diabetes mellitus (T1DM) and age- and sex-matched normal children, excluding those with familial hypercholesterolemia, syndromic disorders, and cardiovascular disease. CIMT and FMD were measured in both the groups.

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Background: Malnutrition and low body mass index (BMI) are risk factors for mortality in hospitalized patients. Data substantiating this are unavailable for hospitalized general medical patients in our setting. We studied the prevalence of malnutrition among patients admitted to general medical wards in a tertiary care hospital and its role as a risk factor for 1-month mortality.

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Aim: To explore the possibility of using urinary biomarkers neutrophil gelatinase-associated lipocalin (NGAL) and kidney injury molecule-1 (KIM-1) to assess the presence of renal scars in children with Vesicoureteric Reflux (VUR).

Materials And Methods: This cross-sectional study was conducted in 94 children aged 0-16 years diagnosed with VUR in the Department of Pediatric Surgery, JIPMER. Urinary biomarkers were measured using the enzyme-linked immunosorbent assay kits, normalized with urinary creatinine (Cr) and compared with severity of VUR (low grade [I and II] and high grade [III, IV, and V]), presence or absence of renal scar in VUR patients and severity of renal scar.

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Introduction Nephrin is a podocyte-specific protein that may serve as a urinary biomarker in patients with diabetic nephropathy. The objectives of the study were to determine urinary nephrin levels in patients with and without type 2 diabetic nephropathy and to assess the correlation between urinary nephrin and albuminuria. Methods This was a cross-sectional comparative study that was carried out at Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Puducherry over 18 months.

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Objective: To evaluate the incidence of aminoglycoside-related nephrotoxicity and ascertain drug causality and its risk factors.

Methods: This prospective study was conducted from January, 2019 to January, 2021, and recruited 110 consecutively admitted children aged 1 month to 12 years, receiving aminoglycosides for ≥4 days. Drug causality was assessed using Liverpool adverse drug reaction causality assessment tool.

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Introduction: Psoriasis is a chronic inflammatory disease affecting the skin with an unclear etiological significance.

Aim: In this study, we determined the mRNA expression and circulating levels of T helper (Th)/T regulatory (Treg) cytokines in psoriasis and analyzed their association with disease severity and treatment response.

Material And Methods: 189 psoriasis patients and 189 controls were recruited.

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