Publications by authors named "Nigam A"

We introduce a quantum-classical generative model for small-molecule design, specifically targeting KRAS inhibitors for cancer therapy. We apply the method to design, select and synthesize 15 proposed molecules that could notably engage with KRAS for cancer therapy, with two holding promise for future development as inhibitors. This work showcases the potential of quantum computing to generate experimentally validated hits that compare favorably against classical models.

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In women globally, breast cancer ranks as the second most frequent cause of cancer-related deaths, making up about 25% of female cancer cases, which is pretty standard in affluent countries. Breast cancer is divided into subtypes based on aggressive, genetic and stage. The precise cause of the problem is still unknown.

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Objective: This study compares ambulatory glycemic profile and glycemic variability between pregnant women diagnosed with type 2 diabetes mellitus (T2DM) receiving pharmacotherapy and healthy pregnant women without diabetes and assesses their correlation with fetal outcome.

Method: This was a case-control study involving 60 pregnant women (40 with T2DM and 20 healthy controls) in the third trimester of pregnancy. A flash glucose monitor device was applied over the upper arm to obtain the ambulatory glucose profile.

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Article Synopsis
  • Cardiac rehabilitation programs can help patients with atherosclerotic cardiovascular diseases (ASCVD) adopt healthier lifestyles, but there’s a need to explore strategies for reversing conditions like prediabetes and metabolic syndrome.
  • The DIABEPIC-1 study evaluated a 6-month enhanced rehabilitation program combining exercise with nutritional interventions, such as a Mediterranean diet and reduced ultraprocessed food intake.
  • Results showed high participation rates and significant health improvements, with half of the participants achieving prediabetes remission and 70% with metabolic syndrome also reaching remission by the end of the study.
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Introduction: The diagnosis of choledochal cysts in the adult population is complicated by the expected physiologic dilation of the common bile duct after cholecystectomy. We aimed to compare patients who underwent choledochal cyst resection based on cholecystectomy status.

Methods: A retrospective analysis was conducted of patients who underwent choledochal cyst resection between 1/1/1998-12/31/2021.

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According to Chinese Medicine system, Chinese honeysuckle have a lot of valuable metabolites which have a various potential like anti-inflammatory action, antidiabetic, analgesics, antipyretic, eliminates pollutants etc. According to Chinese Medicinal System, the plant is mentioned to cure various diseases like peptic ulcer, diabetes, inflammation etc. It is frequently given for patients with colds that include fever, headaches, and sore throats, but it may also be used to help people who are overheated or under stress chill down.

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Background: Structured and supervised physical exercise and cognitive training are two efficient ways to enhance cognition in older adults. Performing both within a combined intervention could maximize their effect on cognition due to their potential synergy on brain functions. During the COVID-19 pandemic, these interventions were particularly relevant due to the collateral impact of social restrictions regarding physical activity and the level of cognitive stimulation.

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Ammonia is a ubiquitous, toxic by-product of cell metabolism. Its high membrane permeability and proton affinity cause ammonia to accumulate inside acidic lysosomes in its poorly membrane-permeant form: ammonium (NH). Ammonium buildup compromises lysosomal function, suggesting the existence of mechanisms that protect cells from ammonium toxicity.

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The prevalence of overweight and obesity is increasing worldwide. Common comorbidities related to obesity, significantly polygenic disorders, cardiovascular disease, and heart conditions affect social and monetary systems. Over the past decade, research in drug discovery and development has opened new paths for alternative and conventional medicine.

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Multi-site MRI imaging poses a significant challenge due to the potential variations in images across different scanners at different sites. This variability can introduce ambiguity in further image analysis. Consequently, the image analysis techniques become site-dependent and scanner-dependent, implying that adjustments in the analysis methodologies are necessary for each scanner configuration.

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Article Synopsis
  • Cannabis is a psychoactive drug consumed globally in various forms, with THC being the main active ingredient affecting cognitive and motor functions.
  • The legal status of cannabis varies widely, with some regions allowing medicinal use while others, like India, have strict prohibitions, although bhang is culturally accepted.
  • A case study highlights a 28-year-old male who suffered a severe heart attack after consuming bhang, illustrating the potential cardiovascular risks associated with cannabis, especially when its concentration is unregulated.
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The tumor microenvironment (TME) significantly influences cancer progression, and mesenchymal stem cells (MSCs) play a crucial role in interacting with tumor cells via paracrine signaling, affecting behaviors such as proliferation, migration, and epithelial-mesenchymal transition. While conventional 2D culture models have provided valuable insights, they cannot fully replicate the complexity and diversity of the TME. Therefore, developing 3D culture systems that better mimic in vivo conditions is essential.

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  • Regulatory proteins use specific repressor domains (RDs) to control gene expression, but how variations in their sequences affect this function is not well understood.
  • Researchers created a dataset from 115,000 variant sequences to study repressor activity in human cells, identifying clinical variants that alter repression functions, including those linked to certain genetic disorders.
  • They developed a deep learning model called TENet to predict repressor activity based on sequence and structure, aiming to enhance the design of synthetic regulatory proteins and improve how we prioritize functional variants in future research.
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Introduction: 3D-printed scaffolds have emerged as an alternative for addressing the current limitations encountered in bone reconstruction. This study aimed to systematically review the feasibility of using 3D bio-printed scaffolds as a material for bone grafting in animal models, focusing on femoral and tibial defects. The primary objective of this study was to evaluate the efficacy, safety, and overall impact of these scaffolds on bone regeneration.

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Progressive metastasis is the primary cause of cancer-related deaths. It has been recognized that many cancers are characterized by long periods of stability followed by subsequent progression. Genes termed metastasis progression suppressors (MPS) are functional gatekeepers of this process, and their loss leads to late-stage progression.

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Key Clinical Message: Uterine artery embolization demonstrated significant efficacy in the treatment of utero-cervical cancer. This minimally invasive procedure holds promise as a valuable adjunct therapy, potentially offering improved outcomes and reduced morbidity in select cases. Further research is warranted to validate its broader clinical utility.

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Antibiotic resistance has emerged as a global threat, rendering the existing conventional treatment strategies ineffective. In view of this, antimicrobial peptides (AMPs) have proven to be potent alternative therapeutic interventions with a wide range of applications in clinical health. AMPs are small peptides produced naturally as a part of the innate immune responses against a broad range of bacterial, fungal and viral pathogens.

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Objective: Type 2 diabetes (T2D) mellitus is increasing exponentially in India, with overweight/obesity being prime contributors. This study aimed at assessing the clinical impact of the combination therapy of a glucagon-like peptide-1 receptor agonist (GLP-1RA) injection (inj.) and a sodium-glucose cotransporter-2 inhibitor (SGLT-2i) in overweight/obese patients from the Indian subcontinent.

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Bilateral retinal metastasis is a rare disease that represents less than 1% of ocular metastases. Additionally, the prevalence of ocular metastases overall is only 5% to 10%. It is uncommonly found due to the absence of a lymphatic system in the eye.

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Article Synopsis
  • Culotte stenting is a treatment method for bifurcation lesions of the left main coronary artery that has proven effective but can lead to side branch restenosis due to gaps at the ostium.
  • A study found that performing sequential kissing balloon dilation before main vessel stenting can help prevent these gaps, which is important for successful outcomes.
  • In a report of 45 patients treated with double kissing mini-culotte stenting, there were no major adverse events, and the procedure showed low rates of complications and side branch restenosis at the one-year follow-up.
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Background And Objectives: With increasing life expectancy and prevalence of thalassaemia, it has led to a greater need for safe blood, yet the current supply from voluntary donors is insufficient to meet this demand. Thalassaemia recipients face a significant risk of alloimmunization because of repeated exposure to foreign red cell antigens. Study aims to determine high prevalent Rh antigen negative donors in western India donor population along with what percentage of these donors are willing to become dedicated voluntary donors for thalassaemia patients.

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  • The clinical development of farnesyltransferase inhibitors (FTIs) for HRAS-mutant tumors shows varied responses due to co-occurring mutations and their impact on sensitivity to FTIs.
  • Targeted sequencing revealed that HRAS-mutant cancers frequently exhibit mutations in the MAPK, PI3K, or RTK pathways, more so than KRAS and NRAS mutants, with specific alterations like BRAF, NF1, PTEN, and PIK3CA being prevalent.
  • Research indicated that while certain comutations confer resistance to FTIs, combining FTIs with MEK inhibitors may enhance sensitivity in HRAS-mutant tumors, presenting a potential treatment strategy.
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