Publications by authors named "Mandar Deshpande"

Summary: PDBImages is an innovative, open-source Node.js package that harnesses the power of the popular macromolecule structure visualization software Mol*. Designed for use by the scientific community, PDBImages provides a means to generate high-quality images for PDB and AlphaFold DB models.

View Article and Find Full Text PDF
Article Synopsis
  • Macromolecular complexes are crucial for cellular functions, and understanding their structure at the atomic level is vital for studying molecular mechanisms.
  • The Protein Data Bank (PDB) collects structural data of these complexes, but inconsistent naming practices make it hard to identify similar assemblies.
  • This study developed a method using external resources to standardize naming for over 90% of PDB assemblies, improving data organization and supporting better research and education efforts.
View Article and Find Full Text PDF

Lymph node status is an important prognostic factor in head and neck cancer. The purpose of this study is to investigate the prognostic value of lymph node density (LND) in node-positive oral cavity cancer patients who received surgery plus adjuvant radiotherapy. From January 2008 to December 2013, a total of 61 oral cavity squamous cell cancer patients who had positive lymph node and received surgery and adjuvant radiotherapy were analysed.

View Article and Find Full Text PDF

Background: Limited data exists regarding the impact of intensification of adjuvant therapy in resected Oral Cavity Squamous Cell Carcinomas (OCSCC) with adverse prognostic features on histopathology.

Patients And Methods: This was a three-arm phase III, randomised trial including patients with resected advanced OCSCC. Randomisation was done in a 1:1:1 ratio: Arm-A- standard adjuvant radiation therapy (RT) 60Gy/30 fractions over 6 weeks versus Arm-B-concurrent chemoradiation versus Arm-C-accelerated radiation therapy (6 d a week).

View Article and Find Full Text PDF

While scientists can often infer the biological function of proteins from their 3-dimensional quaternary structures, the gap between the number of known protein sequences and their experimentally determined structures keeps increasing. A potential solution to this problem is presented by ever more sophisticated computational protein modeling approaches. While often powerful on their own, most methods have strengths and weaknesses.

View Article and Find Full Text PDF
Article Synopsis
  • The text outlines the importance of archiving and sharing protein and nucleic acid structures for supporting research in life sciences.
  • It highlights the role of the Protein Data Bank in Europe (PDBe) in developing databases and web services to provide access to structural data, annotations, and visualization tools.
  • The document also discusses future directions for PDBe's services to address challenges posed by advancements in structure determination and modeling.
View Article and Find Full Text PDF

Presence of methanotrophs in diverse environmental habitats helps to reduce emissions of greenhouse gas like methane. Isolation and culture of undiscovered wealth of methanotrophic organisms can help in exploitation of these organisms in value added products. The present study focuses on the enrichment of methanotroph dominated mixed microbial community by use of three stage strategy of revival, proliferation, and segregation.

View Article and Find Full Text PDF

The quality of macromolecular structure models crucially depends on refinement and validation targets, which optimally describe the expected chemistry. Commonly used software for these two procedures has been designed and developed in a protein-centric manner, resulting in relatively few established features for the refinement and validation of nucleic acid-containing structure models. Here, new nucleic acid-specific approaches implemented in PDB-REDO are described, including a new restraint model using noncovalent geometries (base-pair hydrogen bonding and base-pair stacking) as refinement targets.

View Article and Find Full Text PDF

To develop biotechnological process for methane to methanol conversion, selection of a suitable methanotrophic platform is an important aspect. Systematic approach based on literature and public databases was developed to select representative methanotrophs Methylotuvimicrobium alcaliphilum, Methylomonas methanica, Methylosinus trichosporium and Methylocella silvestris. Selected methanotrophs were further investigated for methanol tolerance and methanol production on pure methane as well as biogas along with key enzyme activities involved in methane utilization.

View Article and Find Full Text PDF
Article Synopsis
  • - Large biomolecular structures are being determined daily using methods like crystallography and electron microscopy, alongside new integrative/hybrid methods (I/HM) that create models of very large macromolecular assemblies, sometimes with hundreds of millions of atoms.
  • - There has been significant development in web-native 3D visualization tools, notably with LiteMol and NGL Viewers, and a new tool called Mol* was created to combine their strengths for better macromolecular analysis.
  • - Mol* Viewer allows high-quality visualization and analysis of complex biochemical structures, supports a variety of data visualization needs, and is open source, making it freely available for users and easily integratable into other platforms.
View Article and Find Full Text PDF

Immune checkpoint inhibitors, such as pembrolizumab and nivolumab, act by inhibiting programmed death-1 and activating the T cells against cancer. An imbalance in this immune response, however, could lead to immune-related adverse events (irAEs) involving multiple organs like rash, fatigue, hypo and hyperthyroidism, pneumonitis, hepatitis, and colitis, among others. Oral irAEs are not uncommon among immune checkpoint inhibitors which include xerostomia, dysgeusia, and lichenoid reactions; however, oral mucositis is rarely seen or reported in patients receiving PD-1 inhibitors.

View Article and Find Full Text PDF
Article Synopsis
  • * Research on diabetic db/db mice revealed reduced activity of the enzyme OGG-1, which repairs oxidative DNA damage, alongside increased levels of modified DNA (8OHG) and 4HNE adducts, suggesting that 4HNE inhibits OGG-1 function.
  • * Additional experiments showed that direct interaction between 4HNE and OGG-1 decreases its activity in a dose-dependent manner, indicating a potential mechanism by which oxidative stress contributes
View Article and Find Full Text PDF

The Protein Data Bank in Europe (PDBe), a founding member of the Worldwide Protein Data Bank (wwPDB), actively participates in the deposition, curation, validation, archiving and dissemination of macromolecular structure data. PDBe supports diverse research communities in their use of macromolecular structures by enriching the PDB data and by providing advanced tools and services for effective data access, visualization and analysis. This paper details the enrichment of data at PDBe, including mapping of RNA structures to Rfam, and identification of molecules that act as cofactors.

View Article and Find Full Text PDF

A vast majority of type-2 diabetic patients (~65%) die of cardiovascular complications including heart failure (HF). In diabetic hearts, levels of 4-hydroxy-2-nonenal (4HNE), a reactive aldehyde that is produced upon lipid peroxidation, were increased. We also demonstrated that in diabetic hearts, there is a decrease in the activity of aldehyde dehydrogenase (ALDH) 2, a primary detoxifying enzyme present in cardiac mitochondria.

View Article and Find Full Text PDF

The Protein Data Bank in Europe (PDBe, pdbe.org) is actively engaged in the deposition, annotation, remediation, enrichment and dissemination of macromolecular structure data. This paper describes new developments and improvements at PDBe addressing three challenging areas: data enrichment, data dissemination and functional reusability.

View Article and Find Full Text PDF

Robotic thyroidectomy is getting accepted worldwide, but, majority of the literature is from South Korea. The purpose of this paper is to review the early experiences with robotic retroauricular (RA) thyroidectomy from India. The rationale for robotic thyroidectomy, its advantages and disadvantages are reviewed.

View Article and Find Full Text PDF

Aldehyde dehydrogenase (ALDH) gene superfamily consists of 19 isozymes. They are present in various organs and involved in metabolizing aldehydes that are biologically generated. For instance, ALDH2, a cardiac mitochondrial ALDH isozyme, is known to detoxify 4-hydroxy-2-nonenal, a reactive aldehyde produced upon lipid peroxidation in diabetic conditions.

View Article and Find Full Text PDF

Aldehyde dehydrogenase (ALDH) 2 is a mitochondrial isozyme of the heart involved in the metabolism of toxic aldehydes produced from oxidative stress. We hypothesized that hyperglycemia-mediated decrease in ALDH2 activity may impair mitochondrial respiration and ultimately result in cardiac damage. A single dose (65 mg/kg; i.

View Article and Find Full Text PDF

The AMP-activated protein kinase, AMPK, is an energy-sensing, metabolic switch implicated in various metabolic disorders; however, its role in inflammation is not well defined. We have previously shown that loss of AMPK exacerbates experimental autoimmune encephalomyelitis (EAE) disease severity. In this study, we investigated the mechanism through which AMPK modulates inflammatory disease like EAE.

View Article and Find Full Text PDF

Increase in 4-hydroxy-2-nonenal (4HNE) due to oxidative stress has been observed in a variety of cardiac diseases such as diabetic cardiomyopathy. 4HNE exerts a damaging effect in the myocardium by interfering with subcellular organelles like mitochondria by forming adducts. Therefore, we hypothesized that increased 4HNE adduct formation in the heart results in proteasome inactivation in isoproterenol (ISO)-infused type 1 diabetes mellitus (DM) rats.

View Article and Find Full Text PDF

Background: Eight percent of the U.S. population has been diagnosed with diabetes mellitus (DM), while another large percentage has gone undiagnosed.

View Article and Find Full Text PDF

Background: The purpose of this study was to explore urinary Epstein-Barr virus (EBV)-DNA as a potential biomarker in patients with nasopharyngeal carcinoma (NPC).

Methods: EBV-DNA copies were estimated in plasma/urine of patients with NPC (n = 76) by real-time polymerase chain reaction (PCR) at baseline, during therapy, and at follow-up. Their correlation with EBV-RNA expression in tissues (n = 53) was used to assess sensitivity and specificity of plasma/urine EBV-DNA.

View Article and Find Full Text PDF

Reactive oxygen species (ROS)-mediated reactive aldehydes induce cellular stress. In cardiovascular diseases such as ischemia-reperfusion injury, lipid-peroxidation derived reactive aldehydes such as 4-hydroxy-2-nonenal (4HNE) are known to contribute to the pathogenesis. 4HNE is involved in ROS formation, abnormal calcium handling and more importantly defective mitochondrial respiration.

View Article and Find Full Text PDF