Liver Type Fatty Acid Binding Protein (L-FABP): A Marker of Contrast Induced -Acute Kidney Injury

Background: Urinary Liver type fatty acid binding protein (L-FABP) is an early biomarker for renal damage. A few studies have been published analyzing the potential use of urinary Liver type fatty acid binding protein (L-FABP) as a biomarker for acute kidney injury. However no study has been done related to Acute Kidney Injury associated with contrast administration. Aim: To search for new markers to identify Acute Kidney Injury (AKI) associated with contrast administration earlier than serum creatinine. Material and Methods: We studied 100 consecutive patients with normal serum creatinine undergoing angiographic procedure. We assessed urinary liver type fatty acid binding protein (L-FABP) levels at basal, 2h 4h, 12h, 24 h and 48 hours after the angiographic procedure. Serum creatinine was measured at basal, 24h and 48 hours after the procedure. Results: There was a significant rise in urinary L-FABP levels at 12 hours after the angiographic procedure. The presence of contrast induced nephropathy associated with acute Kidney Injury was 9%. Conclusion: The present study highlighted the importance of urinary L-FABP in detecting Acute Kidney Injury associated with contrast administration earlier than Serum creatinine. Keywords: Liver type fatty acid binding protein (L-FABP).   Glomerular Filtration Rate (GFR), Contrast induced acute kidney injury (CI-AKI)

Occipital neuralgia in lung carcinoma: A rare clinical scenario case report

Occipital neuralgia is an uncommon cause of pain over occipital region. When occipital nerves are affected due to osteogenic / vasculogenic / neurogenic causes it is manifested as a sharp shooting or stabbing type of pain over the occipital region of scalp, often progressing to involve the vertex and the temporal region as well. Use and withdrawal of variety of drugs result in headache. The role of any chemotherapeutic drug, as a causative agent for occipital neuralgia, has not been described in literature so far. We are reporting a rare case of occipital neuralgia precipitated while on combination chemotherapy regimen in lung carcinoma

Dosimetric evaluation of 120-leaf multileaf collimator in a Varian linear accelerator with 6-MV and 18-MV photon beams

In this study the dosimetric characteristics of 120-leaf multileaf collimators (MLCs) were evaluated for 6-MV and 18-MV photon beams. The dose rate, percentage depth dose, surface dose, dose in the build-up region, beam profile, flatness, symmetry, and penumbra width were measured using three field-defining methods: (i) ‘Jaw only’, (ii) ‘MLC only’, and (iii) ‘MLC+Jaw’. Analysis of dose rate shows that the dose rate for ‘MLC only’ field was higher than that for ‘Jaw only” and ‘MLC+Jaw’ fields in both the energies. The ‘percentage of difference’ of dose rates between ‘MLC only’ and ‘MLC+Jaw’ was (0.9% to 4.4%) and (1.14% to 7%) for 6 MV and 18 MV respectively. The surface dose and dose in the build-up region were more pronounced for ‘MLC only’ fields for both energies, and no significant difference was found in percentage depth dose beyond dmax for both energies. Beam profiles show that flatness and symmetry for both the energies were less than the 3%. The penumbra width for ‘MLC only’ field was more than that for the other two field-defining methods by (1 to 2 mm) and (0.8 to 1.3 mm) for 6-MV and 18-MV photon beams respectively. Analysis of ‘width of 50% dose level’ of the beam profiles at dmax to reflect the field size shows 1 to 2 mm more for 6-MV photons and 2.2 to 2.4 mm morefor 18-MV photons for ‘MLC only’ fields. The results of this study suggest that the characteristics of 120-leaf MLC system with 6 MV and 18 MV are same in all aspects except the surface dose, penumbra, dose in the build-up region, and width of 50% dose levels

CMTM6 drives cisplatin resistance by regulating Wnt signaling through the ENO-1/AKT/GSK3β axis

Rewiring tumor cells to undergo drug-induced apoptosis is a promising way to overcome chemoresistance. Therefore, identifying causative factors for chemoresistance is of high importance. Unbiased global proteome profiling of sensitive, early, and late cisplatin-resistant oral squamous cell carcinoma (OSCC) lines identified CMTM6 as a top-ranked upregulated protein. Analyses of OSCC patient tumor samples demonstrated significantly higher CMTM6 expression in chemotherapy (CT) nonresponders as compared with CT responders. In addition, a significant association between higher CMTM6 expression and poorer relapse-free survival in esophageal squamous cell carcinoma, head and neck squamous cell carcinoma, and lung squamous cell carcinoma was observed from Kaplan-Meier plot analysis. Stable knockdown (KD) of CMTM6 restored cisplatin-mediated cell death in chemoresistant OSCC lines. Upon CMTM6 overexpression in CMTM6-KD lines, the cisplatin-resistant phenotype was rescued. The patient-derived cell xenograft model of chemoresistant OSCC displaying CMTM6 depletion restored the cisplatin-induced cell death and tumor burden substantially. The transcriptome analysis of CMTM6-KD and control chemoresistant cells depicted enrichment of the Wnt signaling pathway. We demonstrated that CMTM6 interaction with membrane-bound Enolase-1 stabilized its expression, leading to activation of Wnt signaling mediated by AKT–glycogen synthase kinase-3β. CMTM6 has been identified as a stabilizer of programmed cell death ligand 1. Therefore, as CMTM6 facilitates tumor cells for immune evasion and mediates cisplatin resistance, it could be a promising therapeutic target for treating therapy-resistant OSCC

Abstracts of National Conference on Biological, Biochemical, Biomedical, Bioenergy, and Environmental Biotechnology

This book contains the abstracts of the papers presented at the National Conference on Biological, Biochemical, Biomedical, Bioenergy, and Environmental Biotechnology (NCB4EBT-2021) Organized by the Department of Biotechnology, National Institute of Technology Warangal, India held on 29–30 January 2021. This conference is the first of its kind organized by NIT-W which covered an array of interesting topics in biotechnology. This makes it a bit special as it brings together researchers from different disciplines of biotechnology, which in turn will also open new research and cooperation fields for them. Conference Title: National Conference on Biological, Biochemical, Biomedical, Bioenergy, and Environmental BiotechnologyConference Acronym: NCB4EBT-2021Conference Date: 29–30 January 2021Conference Location: Online (Virtual Mode)Conference Organizer: Department of Biotechnology, National Institute of Technology Warangal, Indi