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Homology modeling and molecular docking studies on Type II diabetes complications reduced PPARγ receptor with various ligand molecules

Prabhu S, Vijayakumar S, Manogar P, Maniam GP, Govindan N

Biomed Pharmacother, 2017 Aug;92:528-535.
PMID: 28575810 DOI: 10.1016/j.biopha.2017.05.077

Peroxisome proliferator-activated receptor gamma (PPARγ), a type II nuclear receptor present in adipose tissue, colon and macrophages. It reduces the hyperglycemia associated metabolic syndromes. Particularly, type II diabetes-related cardiovascular system risk in human beings. The fatty acid storage and glucose metabolism are regulated by PPARγ activation in human body. According to recent reports commercially available PPARγ activating drugs have been causing severe side effects. At the same time, natural products have been proved to be a promising area of drug discovery. Recently, many studies have been attempted to screen and identify a potential drug candidate to activate PPARγ. Hence, in this study we have selected some of the bio-active molecules from traditional medicinal plants. Molecular docking studies have been carried out against the target, PPARγ. We Results suggested that Punigluconin has a efficient docking score and it is found to have good binding affinities than other ligands. Hence, we concluded that Punigluconin is a better drug candidate for activation of PPARγ gene expression. Further studies are necessary to confirm their efficacy and possibly it can develop as a potential drug in future.
Changes in stroke volume variation and cardiac index during open major bowel surgery

Prabhu SP, Nileshwar A, Krishna HM, Prabhu M

Niger J Clin Pract, 2021 Nov;24(11):1682-1688.
PMID: 34782509 DOI: 10.4103/njcp.njcp_30_20

Background: Stroke volume variation (SVV) is a dynamic indicator of preload, which is a determinant of cardiac output. Aims: Aim of this study was to evaluate the relationship between changes in SVV and cardiac index (CI) in patients with normal left ventricular function undergoing major open abdominal surgery.
Patients and Methods: Patients undergoing major open abdominal surgery were monitored continuously with FloTrac® to measure SVV and CI along with standard monitoring. Both SVV and CI were noted at baseline and every 10 min thereafter till the end of surgery and were observed for concurrence between the measurements.
Results: 1800 pairs of measurement of SVV and CI were obtained from 60 patients. Mean SVV and CI (of all patients) measured at different time points of measurement showed that as SVV increased with time, the CI dropped correspondingly. When individual readings of CI and SVV were plotted against each other, the scatter was found to be wide, reiterating the lack of agreement between the two parameters (R2 = 0.035). SVV >13% suggesting hypovolemia was found at 207 time points. Of these, 175 had a CI >2.5 L/min/m2 and only 32 patients had a CI <2.5 L/min/m2.
Conclusion: SVV, a dynamic index of fluid responsiveness can be used to monitor patients expected to have large fluid shifts during major abdominal surgery. It is very specific and has a high negative predictive value. When SVV increases, CI is usually maintained. Since many factors affect SVV and CI, any increase in SVV >13%, must be correlated with other parameters before administration of the fluid challenge.
Duplication cyst with midgut volvulus in a neonate: an unusual presentation

Pai NG, Prabhu S, Prabhakar P, Kumar V

BMJ Case Rep, 2020 Aug 26;13(8).
PMID: 32847882 DOI: 10.1136/bcr-2020-235526

Incomplete intestinal fixation or malrotation of gut with midgut volvulus is one of the important causes of bilious vomiting in neonates. The incidence of malrotation of gut in population is 4% and that of duplication cyst is 1:4500. Patients with malrotation are prone to develop midgut volvulus due to their narrow mesenteric base demanding urgent surgical intervention. Common associated anomalies are intrinsic duodenal obstruction, internal hernias, caecal volvulus, anorectal malformations and Hirschsprung's disease. The present case refers to a 4-day-old neonate who presented with malrotation of gut with reverse volvulus and an associated gastrointestinal duplication cyst, which is a rare association with only few reported case reports. After imaging with ultrasound and contrast radiograph, the baby underwent prompt surgical intervention in the form of Ladd's procedure with resection and anastomosis of jejunal duplication cyst.
Comprehensive review on lignocellulosic biomass derived biochar production, characterization, utilization and applications

Jayakumar M, Hamda AS, Abo LD, Daba BJ, Venkatesa Prabhu S, Rangaraju M, et al.

Chemosphere, 2023 Dec;345:140515.
PMID: 37871877 DOI: 10.1016/j.chemosphere.2023.140515

Biochar is an ample source of organic carbon prepared by the thermal breakdown of biomass. Lignocellulosic biomass is a promising precursor for biochar production, and has several applications in various industries. In addition, biochar can be applied for environmental revitalization by reducing the negative impacts through intrinsic mechanisms. In addition to its environmentally friendly nature, biochar has several recyclable and inexpensive benefits. Nourishing and detoxification of the environment can be undertaken using biochar by different investigators on account of its excellent contaminant removal capacity. Studies have shown that biochar can be improved by activation to remove toxic pollutants. In general, biochar is produced by closed-loop systems; however, decentralized methods have been proven to be more efficient for increasing resource efficiency in view of circular bio-economy and lignocellulosic waste management. In the last decade, several studies have been conducted to reveal the unexplored potential and to understand the knowledge gaps in different biochar-based applications. However, there is still a crucial need for research to acquire sufficient data regarding biochar modification and management, the utilization of lignocellulosic biomass, and achieving a sustainable paradigm. The present review has been articulated to provide a summary of information on different aspects of biochar, such as production, characterization, modification for improvisation, issues, and remediation have been addressed.