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Obesity is a multifactorial disease and is associated with an increased risk of developing metabolic syndrome and co-morbidities. Dysregulated expansion of the adipose tissue during obesity induces local tissue hypoxia, altered secretory profile of adipokines, cytokines and chemokines, altered profile of local tissue inflammatory cells leading to the development of low-grade chronic inflammation. Low grade chronic inflammation is considered to be the underlying mechanism that increases the risk of developing obesity associated comorbidities. The glucocorticoid induced protein annexin A1 and its N-terminal peptides are anti-inflammatory mediators involved in resolving inflammation. The aim of the current study was to investigate the role of annexin A1 in obesity and associated inflammation. To achieve this aim, the current study analysed data from two feasibility studies in clinical populations: (1) bariatric surgery patients (Pre- and 3 months post-surgery) and (2) Lipodystrophy patients. Plasma annexin A1 levels were increased at 3-months post-surgery compared to pre-surgery (1.2 ± 0.1 ng/mL, n = 19 vs. 1.6 ± 0.1 ng/mL, n = 9, p = 0.009) and positively correlated with adiponectin (p = 0.009, r = 0.468, n = 25). Plasma annexin A1 levels were decreased in patients with lipodystrophy compared to BMI matched controls (0.2 ± 0.1 ng/mL, n = 9 vs. 0.97 ± 0.1 ng/mL, n = 30, p = 0.008), whereas CRP levels were significantly elevated (3.3 ± 1.0 µg/mL, n = 9 vs. 1.4 ± 0.3 µg/mL, n = 31, p = 0.0074). The roles of annexin A1 were explored using an in vitro cell based model (SGBS cells) mimicking the inflammatory status that is observed in obesity. Acute treatment with the annexin A1 N-terminal peptide, AC2-26 differentially regulated gene expression (including PPARA (2.8 ± 0.7-fold, p = 0.0303, n = 3), ADIPOQ (2.0 ± 0.3-fold, p = 0.0073, n = 3), LEP (0.6 ± 0.2-fold, p = 0.0400, n = 3), NAMPT (0.4 ± 0.1-fold, p = 0.0039, n = 3) and RETN (0.1 ± 0.03-fold, p < 0.0001, n = 3) in mature obesogenic adipocytes indicating that annexin A1 may play a protective role in obesity and inflammation. However, this effect may be overshadowed by the continued increase in systemic inflammation associated with rapid tissue expansion in obesity.

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Objective: An ethanolic extract of Sesamum indicum Linn was used to test for phytochemicals, antioxidant activity, and gastroprotective effects. Study Design: Cross-Sectional Study Place of Study: Rashid Latif Medical College Lahore. Duration of Study: July 2021 to March 2022 Materials and methods: This study ulcerated Wister albino rats using pylorus ligation and indomethacin-induced ulcer screening. Ulceration required pylorus ligation. These ulcer screening models were used. An ethanolic S. indicum leaves (EESIL) at 100, 200, and 400 mg/kg (orally for 7 days) was compared against omeprazole, a common ulcer medication. The trial lasted seven days. Throughout the course of the experiment, readings were taken for the following variables: stomach content; pH; total acidity; pepsin activity ulcer score; free acidity; ulcer index (UI); percentage of inhibition of ulcers; mean mucin, pepsin, and total protein content; and ulcer index (UI). Results: In comparison to the control group, the pylorus ligation model resulted in a decrease in pepsin activity, free acidity, pepsin content, ulcer score, total protein content, and % ulcer inhibition. Moreover, the overall acidity level was lower (P< 0.05 and P< 0.01). EESIL-tested groups had higher mean mucin and stomach content pH (P 0.05 and P 0.01). Both findings are statistically significant. EESIL dosages (100, 200, and 400 mg/kg ) had dose-dependent gastroprotective effects. Compared to the control group, stomach metrics like UI and ulcer score dropped significantly (P< 0.05 and P<0.01), gastric pH increased, and ulcer percentage inhibition increased. Increased ulcer inhibition percentage. Moreover, stomach pH increased and ulcer percentage decreased. Conclusion: Antioxidant, anti-ulcer, EESIL, and EESIL compounds have antioxidant action depending on concentration. Antioxidant is connected. The study found that the EESIL's increased defensive and decreased offensive components increased its antiulcer potential. This was due to the study's revisions. The research's offensive and defensive design caused this. Keywords: Antioxidant, anti-ulcer, ethanolic extract of sesamum indicum leaves, indomethacin, pylorus ligation, ulcer index