Publications by authors named "Parameswaran R"

Background: Given the increasing prevalence of antiplatelet agent use and the lack of high-quality evidence, the CAPTAIN trial aimed to investigate the safety and provide recommendations on continuing acetylsalicylic acid perioperatively in patients undergoing elective laparoscopic totally extraperitoneal inguinal hernia repair (LIHR).

Methods: The CAPTAIN trial was a multicentre, surgeon blind, randomized controlled trial conducted from April 2016 to April 2023. Patients undergoing LIHR were eligible for inclusion.

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Systemic lupus erythematosus (SLE) is an autoimmune disease characterized by dysregulated B cell activation, autoantibody production, and nephritis. B cell activating factor (BAFF) overexpression enhances autoreactive B-cell survival, driving autoimmunity. BAFF specific belimumab and CD20 specific rituximab antibodies are used for SLE therapy but are not curative, highlighting the need for alternative B cell depletion therapies.

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We report on a case of a 67-year-old male who was referred to our care with persistent aldosteronism post adrenalectomy. Biochemical failure after surgery is rare after surgery for primary aldosteronism (PA). Persistent hypokalaemia and raised aldosteronism is an indication of treatment failure after surgery.

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Background: Adrenal Cushing's syndrome is caused by an adrenal tumor that produces hypercortisolism and requires glucocorticoid supplementation following resection of the tumour to prevent adrenal insufficiency. Few studies have examined whether glucocorticoid replacement (GR) therapy is required after retroperitoneal laparoscopic unilateral adrenal adenoma resection in patients with non-cortisol secreting tumors, or whether there is any correlation between preoperative biochemical indicators and postoperative cortisol function. This study sought to investigate which patients with non-cortisol secreting tumors required GR therapy after undergoing retroperitoneal laparoscopic resection of unilateral adrenal cortical adenoma.

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The implant surface chemistry and topography are primary factors regulating the success and survival of bone scaffold. Surface modification is a promising alternative to enhance the biocompatibility and tissue response to augment the osteogenic functionalities of polyesters like PLA. The study employed the synergistic effect of alkaline hydrolysis and polydopamine (PDA) functionalization to enhance the cell-material interactions on 3D printed polylactic acid (PLA) scaffold.

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Combined ganglioneuroma-schwannoma is an exceedingly rare tumor that has only been described in isolated case reports. We document a 64-year-old man with an incidentally discovered combined ganglioneuroma-schwannoma of the retroperitoneum that was intimately associated with sympathetic ganglia. We highlight the morphological and immunohistochemical findings of this rare tumor, and show evidence of its origin from sympathetic ganglia.

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Hairy cell leukemia variant (HCL-v) is a rare malignancy of clonal mature B-cells that follows a chronic disease course. HCL-v patients are often resistant to purine nucleoside analogs, which are the first-line therapy. To address the shortcomings of current therapy for HCL-v, we investigated the activity of a BAFF ligand-based CAR-T cell which binds to all three BAFF receptors, BAFF-receptor, TACI, and BCMA.

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Background: The cure for patients with primary hyperaldosteronism (PHA) secondary to solitary adrenal adenoma is adrenalectomy. We investigated the impact of size of Conns' tumour on hypertension resolution in a multi-ethnic South East Asian Cohort.

Methods: Retrospective cohort study of patients who underwent surgery for PHA between January 2010 to December 2022 was performed.

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The era of mucoadhesive polymers has advanced to the next generation, focusing on targeted adhesion of chemical functional groups with mucosa. This work aims to develop boronic acid functionalized polymers, which could facilitate reversible binding with the mucin in the mucosa. Pendant groups of boronic acid were conjugated on the chains of polyvinylpyrrolidone (PVP) via C═N bonding.

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Article Synopsis
  • Parathyroid carcinoma (PTTC) is a rare type of cancer that can occur with kidney-related parathyroid problems, but it's not very common.
  • Researchers looked at 48 cases of PTTC over many years to see how these patients did.
  • They found that surgery to remove the cancer along with affected glands gives the best chance to get rid of it, but some patients still had issues later on.
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Biological scaffolds are plagued by poor biomechanical properties and untimely degradation. These limitations have yet to be addressed without compromising their biocompatibility. It is desirable to avoid inflammation and have degradation with concomitant host collagen deposition or even site-appropriate regeneration for the successful outcome of an implanted biological scaffold.

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Background: Preoperative diagnosis of parathyroid cancer (PC) where possible allows for en-bloc resection of the tumour, which is associated with excellent prognosis. The rule of >3 (size of tumour larger than 3 cm; corrected calcium more than 3 mmol/L) as proposed by Schulte and Talat has a specificity of 95% in predicting malignancy in parathyroid neoplasms. We looked at the impact of rule of 3 in predicting malignancy and outcomes on intervention in a South Asian cohort.

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Developing an ideal nerve conduit for proper nerve regeneration still faces several challenges. The attempts to fabricate aligned substrates for neuronal growth have enhanced the hope of successful nerve regeneration. In this wok, we have attempted to generate an electrospun matrix with aligned fibers from a silver and graphene oxide-incorporated ethylene vinyl alcohol copolymer (EVAL).

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Background Biliary dyskinesia (BD) is a disorder characterised by abdominal pain of biliary origin (i.e., sudden steady pain at the right upper quadrant of the abdomen or the epigastrium, the absence of gallstones on ultrasound (US)), and a decreased gallbladder ejection fraction (GBEF) on a cholecystokinin-cholescintigraphy hepatobiliary iminodiacetic acid (CCK-HIDA) scan.

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Unlabelled: A borderline case presents with mild skeletal disharmony or orthodontic problems due to arch length discrepancy and migration of teeth or a combination of these but is masked by a balanced soft tissue relationship. This case report describes one such borderline case of a 13-year-old girl who complained of irregularly placed upper and lower front teeth. Extraoral examination revealed balanced soft tissue with a mild convex profile, competent lips, and an average nasolabial angle.

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Importance: Poorly differentiated cancer (PDC) and anaplastic thyroid cancer (ATC) have an aggressive course of disease with limited treatment options. The expression of programmed cell death ligand-1 (PD-L1) has been used to determine the responses of many cancers to immunotherapy. The aim of the study was to investigate the expression of PD-L1 in a cohort of patients with PDC and ATC to assess their suitability for immunotherapy.

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Significant progress has been made in the understand-ing of many human diseases, especially cancers, which has contributed to improved and increased survival. The Human Genome Project and The Cancer Genome Atlas project brought about a new era, with an understanding of inherited diseases at a molecular level, which subsequently facilitated the option of precision medicine. Precision medicine has helped tailor treatment decisions at an individual level, for instance in terms of surgical treatments or targeted therapies in advanced diseases.

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Background: Although the substrate in persistent atrial fibrillation (PeAF) is not limited to the pulmonary veins (PVs), PV isolation (PVI) remains the cornerstone ablation strategy.

Objectives: The aim of this study was to describe the mechanism of outgoing wavefronts (WFs) originating in the PV sleeves during PeAF.

Methods: Eleven patients presenting for first-time PeAF ablation were recruited (mean age 63.

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Introduction: An anterior open bite is a form of vertical discrepancy that presents as a lack of contact between maxillary and mandibular segments. The treatment modalities usually involve either intrusion of posterior teeth or extrusion of anterior or a combination of both. The anatomical relationship between the apex of the maxillary molar roots to the inferior wall of the maxillary sinus floor is crucial in planning posterior intrusion.

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Introduction: Parathyroid carcinoma is a rare malignant endocrine tumor that is usually associated with primary hyperparathyroidism. The coexistence of parathyroid carcinoma and renal hyperparathyroidism is a rare phenomenon. Hence, we present a case of parathyroid carcinoma in a patient with tertiary hyperparathyroidism.

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Background Microleakage under orthodontic brackets has a role in early bracket debonding and white spot lesions due to the ingress of oral fluids in the bracket-adhesive-tooth interface. This in vitro study aimed to evaluate and compare the microleakage under orthodontic brackets bonded with the conventional adhesive system, nanocomposites, and nanoionomers. Materials and methods Forty-five human premolars were extracted for therapeutic reasons and collected for this study.

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