Effect of augmented glycation in mobilization of plasma free fatty acids in type 2 diabetes mellitus
DIABETES & METABOLIC SYNDROME-CLINICAL RESEARCH & REVIEWS
Authors: Chandra, Kailash; Jain, Vineet; Azhar, Masood; Khan, Washim; Alam, Ozair; Ahmad, Sayeed; Jain, Swatantra Kumar
Abstract
Background and aims: Type 2 Diabetes Mellitus (T2DM) is known to be associated with an increase in total plasma free fatty acid (FFA) concentration. The present study was conducted to determine the changes in plasma fatty acids at different levels of glycation in type 2 diabetes mellitus. ethods: The study involved 50 subjects having different levels of glycation (HbA1c 4.9-15.0%) and further categorized in 5 groups [group 1 (HbA1c <6%), group 2 (HbA1c 6-7%), group 3 (HbA1c 7.1-9%), group 4 (HbA1c (9.1-12%) and group 5 (HbA1c >12%)] with 10 subjects in each group. Results: A total of 19 free fatty acids were detected by gas chromatography-mass spectrometry (GC-MS) analysis in the plasma samples. The levels of lauric acid (C12:0) and stearic acid (C18:0) were significantly raised at an advanced stage of glycation (HbA1c 9.1-15%). Long-chain fatty acids, pentadecanoic acid (C15:0) and palmitic acid (C16:0) levels were elevated in hyperglycemia as compared to normoglycaemic subjects (HbA1c <6%). Moreover, levels of mono and polyunsaturated fatty acids, oleic acid (C18:1) and linoleic acid (C18:2, w6) were significantly decreased in patients with increased levels of glycation (HbA1c 6-15%). Conclusion: GC-MS is a novel way to study the plasma fatty acid profiling and findings of this study suggest that monitoring alterations in plasma FFA profile may be of prognostic value. (c) 2020 Diabetes India. Published by Elsevier Ltd. All rights reserved.
Milk somatic cell derived transcriptome analysis identifies regulatory genes and pathways during lactation in Indian Sahiwal cattle (Bos indicus)
MOLECULAR BIOLOGY REPORTS
Authors: Ahlawat, Sonika; Vijh, Ramesh Kumar; Sharma, Anju; Sharma, Upasna; Girdhar, Yashila; Kaur, Mandeep; Chhabra, Pooja; Kumar, Ashish; Arora, Reena
Abstract
Background The present study is an effort to understand the genomic drivers of lactation in Sahiwal (Bos indicus), the best milch cattle breed of the tropics. Methods RNA sequencing of four animals from early, mid and late lactation stages was performed using milk somatic cells as source of RNA. Results The genes encoding the milk casein and whey proteins showed highest expression in early and mid lactation, with a declining trend towards the late stage. The enhanced expression ofPLIN2, FABP5andFABP3genes in mid lactation suggests enrichment of the PPAR alpha pathway which is linked to fatty acid metabolism. A gradual decline in the percentage of genes involved in metabolism of proteins, mRNA and insulin synthesis from early to late lactation reflected transition from lactogenesis to involution. Major biological pathways maintained throughout lactation were adaptive immune system, FGF signaling, EGFR signaling, activated TLR4 signaling, NFkB and MAP kinases activation mediated by TLR4 signaling repertoire. Differential expression analysis revealed 547, 1010 and 1313 differentially expressed genes (p < 0.05) between early-late, early-mid and mid-late stages, respectively. The topmost regulatory genes identified by network analysis from the differentially expressed genes, were involved in Chemokine receptor, GPCR and EGFR1 pathways. Conclusion The genes and pathways delineated in this study have regulatory implications in cell morphogenesis, lipid droplet formation and protein synthesis in the course of lactation. The study provides an insight into the expression profile of genes influencing milk properties and lactation in Sahiwal cattle.