Prostaglandins & other lipid mediators最新文献

The aim of the study was the assessment of changes in the serum phospholipid profile patients with Lyme neuroborreliosis (NB), asymptomatic people after frequent tick bites and patients after long-term multidrug therapy against B.burgdorferi. LC-QTOF-MS/MS platform was used to identify changes in serum phospholipid profile of 37 persons. The results demonstrate differences PL profile among patients with Lyme borreliosis (LB), people frequently exposed to tick bites and patients treated with long-term multidrug therapy compared to healthy subjects. Significant differences in SM, LPC, PI, and PC content of NB patients discriminate this group of patients from the other groups, have potential diagnostic value, and can be used for the development of more effective diagnostic tools. The finding that the phospholipid profile of foresters is similar to healthy people, suggests the existence of adaptive mechanisms that are currently difficult to explain but are interesting from the perspective of future research.

Epoxyeicosatrienoic acids (EETs) are a class of cytochrome P450 (P450) arachidonic acid (AA) metabolites with diverse biological activities including anti-hypertensive, vasodilatory, angiogenic, and anti-inflammatory properties. While their functions as autocrine and paracrine mediators in cardiovascular and renal systems are well established, their mechanism of action and roles in hormonal functional responses are yet to be fully defined. In this review, we highlight extant evidence of their participation in hormonal transmembrane signal transduction leading to the activation of the ERK1/2 or Akt serine/threonine kinases. Based on studies with EGF (Epidermal Growth Factor), VEGF (Vascular Endothelial Growth Factor) and insulin binding to their membrane bound receptors, we propose to include EETs to the inventory of intracellular mediators associated with the functional responses elicited upon selected hormone/receptor interactions.

Background: Gastric cancer (GC) is the third leading culprit of cancer-related deaths around the world. Beta-sitosterol (BS) is an important phytosterol that has been proven to have anti-proliferative effects on GC and other tumors. However, mechanisms and targets of BS in cancer are rarely explored.

Methods: In this investigation, the targets of BS in the treatment of GC were analyzed by network pharmacology. Molecular docking and cellular thermal shift assay were introduced to validate the binding relationship between BS and PTGS1. The impacts of BS on GC cell viability, half maximal inhibitory concentration, proliferation ability, apoptosis level, and angiogenesis ability were detected by using Cell Counting Kit-8, clone formation assay, flow cytometry, and angiogenesis experiment, respectively. In addition, the expression levels of angiogenic factors (VEGF, FGF, PAI-1) were detected by using western blot.

Results: In this project, through cell experiments, PTGS1 was identified as a protein that directly binds to BS. In vitro cell experiments revealed that BS promoted apoptosis and inhibited GC cell proliferation and angiogenesis. Importantly, treatment with BS attenuated the promoting influence of PTGS1 overexpression on GC cell proliferation and angiogenesis.

Conclusion: This investigation highlighted PTGS1 as the target of BS in GC cells. BS can regulate PTGS1 to inhibit GC cell proliferation and angiogenesis, providing new evidence for the potential use of BS as a therapeutic agent for GC.

Cardiovascular complications resulting from cisplatin (CS) are a significant factor that can disrupt the treatment plan associated with this chemotherapy. This information led us to investigate the effectiveness of lutein (LT), which has antioxidant effects, in preventing CS-induced cardiotoxic effects. After 28 rats were randomly divided into four equal groups, saline (1 ml/day) was administered to the control group, LT (100 mg/kg/day) to the LT group, CS (10 mg/kg) to the CS group, and active agents in the LT and CS groups were administered to the CS + LT group in the same dose and manner. The examinations determined that MDA, cardiac biomarkers (CK-MB, BNP, LDH, and cTn-I) levels, TNF-α and caspase-3 expressions, and apoptosis significantly increased in the CS group. In contrast, GSH, SOD, and CAT levels were decreased. In addition, histopathological changes characterized by interstitial edema, leukocyte infiltration, and vacuolar degeneration were detected in the heart tissues of this group. It was determined that LT application prevented the above-mentioned CS-induced cardiotoxic effects to a significant extent, although not completely. The findings obtained in this study show that LT may reduce CS-induced cardiac damage thanks to its ROS-reducing, anti-inflammatory, anti-apoptotic, and cytoprotective characteristics.

Saffron has been traditionally used for various health benefits, but its effects on biomarkers of liver function, kidney function, and blood pressure in diabetes are not well understood. This meta-analysis aims to evaluate the impact of saffron supplementation on systolic blood pressure (SBP), diastolic blood pressure (DBP), fasting blood glucose (FBG), liver enzymes (ALT, AST), and kidney function markers (BUN, creatinine) in patients with diabetes and prediabetes. A comprehensive search was conducted across multiple databases to identify randomized controlled trials (RCTs) assessing saffron/crocin supplementation on glycemic control, hepatic and renal function, and blood pressure regulation in patients with diabetes and prediabetes. Data were extracted and analyzed using random effects model to determine the effect sizes and 95 % confidence intervals (CIs) for each biomarker. The GRADE framework was employed to assess the certainty of the evidence for each outcome. Thirteen studies were included in the meta-analysis. Saffron supplementation significantly reduced SBP (SMD = -0.57, 95 % CI: -0.8 to -0.34, p = 0.036) with the high certainty of evidence, FBG (SMD = -0.57, 95 % CI: -0.93 to -0.22, p = 0.001) with the low certainty of evidence, and AST (SMD = -0.49, 95 % CI: -0.97 to -0.00, p = 0.049) with the low certainty of evidence. Other studied biomarkers were not affected significantly by saffron/crocin supplementation. Saffron/crocin supplementation is effective in decreasing AST, SBP, and FBG levels in patients with diabetes and prediabetes. However, it has no significant effect on ALT, renal function, and DBP. Our observed effect sizes on AST, SBP, and FBG are not clinically important.

Polycystic ovary syndrome (PCOS) is one of the most common and important polygenic endocrine disorders among women of reproductive-aged. Current treatments are mostly used only to control the signs and symptoms of the disease, while not being able to completely prevent complications. Curcumin is one of the active compounds in turmeric, which is commonly used for a wide range of metabolic and inflammatory diseases. Therefore, this systematic review was performed to evaluate the effect of curcumin supplementation on PCOS. The current systematic review was performed according to the guidelines of the 2015 PRISMA (Preferred Reporting Items for Systematic Review and Meta-Analysis) statements. We searched ProQuest, PubMed, Google Scholar electronic, Scopus, and Cochrane, Embase, and Science Direct databases and on articles published up until November 2024. All of the animal studies (seven studies) and clinical trials (five studies) included in this systematic review that assessed the effect of curcumin on, reproductive hormones and metabolic risk markers in PCOS were published in English-language journals. Most studies supported the beneficial effects of curcumin on folliculogenesis, ovarian histomorphology, and luteinization processes. The effects of curcumin on decreasing the levels of luteinizing insulin resistance luteinizing hormone (LH), Follicle-stimulating hormone (FSH)and testosterone, were also reported. Curcumin also improved dyslipidemia, but no significant effect on weight loss has been reported. It is suggested that the effect of curcumin in PCOS is more related to the antioxidant and anti-inflammatory properties of curcumin than to the effects of weight loss. Therefore, this study provides evidence that curcumin can be considered an effective factor in reducing the complications of PCOS. However, due to the low number of human studies in this field, further clinical trials are warranted to verify these outcomes.