Effect of taurine on vascular dysfunction in an in vitro ischemia-reperfusion model of rat thoracic aorta.

Objective: The primary objective of this study was to evaluate the protective effect of taurine on endothelial dysfunction in a vascular ischemia-reperfusion (IR) model.

Methods: Thoracic aortas of 9 male Sprague-Dawley rats (350-500 g) were cut into rings and randomized into control (n = 7), IR (n = 8), IR + taurine 1 mM (n = 7), IR + taurine 10 mM (n = 8), IR + taurine 30 mM (n = 8), and IR + taurine 100 mM (n = 5) groups. Aortic rings in the IR group were stored in 0.

A meta-analysis of animal studies evaluating the effect of hydrogen sulfide on ischemic stroke: is the preclinical evidence sufficient to move forward?

Hydrogen sulfide (HS) is a gasotransmitter that has been studied for its potential therapeutic effects, including its role in the pathophysiology and treatment of stroke. This systematic review and meta-analysis aimed to determine the sufficiency of overall preclinical evidence to guide the initiation of clinical stroke trials with HS and provide tailored recommendations for their design. PubMed, Web of Science, Scopus, EMBASE, and MEDLINE were searched for studies evaluating the effect of any HS donor on in vivo animal models of regional ischemic stroke, and 34 publications were identified.

Effects of hypoxia versus ischaemia on vascular functions of isolated rat thoracic aorta: revisiting the vascular ischaemia/reperfusion model.

Introduction: The rat vascular ischaemia and reperfusion model is used to evaluate the molecular and functional effects of potential agents against ischaemia and reperfusion injury of autologous graft veins. However, there is no consensus on whether hypoxia, rather than ischaemia, is sufficient to induce vascular dysfunction.

Aim: To compare the effects of hypoxia and ischaemia, with or without reperfusion, on the vascular functions of isolated thoracic aortic rings of rats.

Effect of hydrogen sulfide on ischemia-reperfusion injury of kidney: A systematic review and meta-analysis of in vivo animal studies.

Hydrogen sulfide (HS) has been shown to be effective against kidney ischemia-reperfusion injury (IRI) in animal studies. We aimed to evaluate the current evidence from in vivo animal studies for the protective effects of HS against kidney IRI by systematically reviewing the literature and performing a meta-analysis. Based on the preregistered protocol (PROSPERO: CRD42021295469); PubMed, Medline, Embase, Web of Science, and Scopus were searched to identify in vivo animal studies evaluating the effect of HS against kidney IRI.

Effect of rosuvastatin on spatial learning, memory, and anxiety-like behaviour in ovariectomized rats.

The effect of rosuvastatin (Ros) on cognitive function and anxiety-like behaviour in ovariectomized rats were evaluated. Eighteen female Wistar rats (218-310 g, 6-8 months old) were allocated into sham ( = 6), ovariectomy (Ovx,  = 6) or Ovx + Ros (up to eighth week  = 6, then  = 4) groups. Ros was administered at 20 mg/kg/day by oral gavage for 12 weeks.

Mechanism of acitretin-induced relaxations in isolated rat thoracic aorta preparations.

Acitretin is a member of vitamin A-derived retinoids, and its effect on vascular smooth muscle had not yet been studied. The aim of this study is to investigate the effect of acitretin, a retinoid, on vascular smooth muscle contractility. Thoracic aorta preparations obtained from 34 male Sprague-Dawley rats (355 ± 15 g) were studied in isolated organ baths containing Krebs-Henseleit solution.

Effects of Algan Hemostatic Agent on bleeding time in a rat tail hemorrhage model.

Background: Algan Hemostatic Agent (AHA) is a multi-herbal extract containing a standardized amount of Achillea millefolium, Juglans regia, Lycopodium clavatum, Rubus caesius or Rubis fruciosus, Viscum album, and Vitis vinifera, each of which is effective in hemostasis. In this study, we aimed to investigate the effects of AHA on bleeding time in a rat tail hemorrhage model.

Methods: Forty-eight Sprague Dawley rats (5-7 weeks old, 180-210 g) were randomly and equally allocated to six groups as follows: heparin plus saline (heparinized control), heparin plus AHA-soaked sponge, heparin plus liquid form of AHA, saline (non-heparinized control), AHA-soaked sponge and liquid form of AHA.

Relaxant effect of diallyl sulfide on nonpregnant rat uterus: Involvement of voltage-dependent calcium channels.

Aim: We aimed to determine the effect and mechanism of action of diallyl sulfide (DAS), an active component of sulfur-containing foods such as garlic on rat uterine activity.

Methods: Isometric tension changes in longitudinal uterine strips obtained from 20 female Sprague-Dawley rats (250-300 g) in estrus stage of estrous cycle were studied in isolated organ baths containing Krebs-Henseleit solution.

Results: Diallyl sulfide (10 -10  M) caused a concentration-dependent relaxation on KCl (60 mM)-induced contractions and inhibited spontaneous peristaltic activity of uterine strips (P < 0.

Cyclosporine A-induced acute hepatotoxicity in guinea pigs is associated with endothelin-mediated decrease in local hepatic blood flow.

Aims: To bring further insight into the mechanism of cyclosporine A (CsA)-induced hepatotoxicity, the acute effect of CsA on local hepatic blood flow (LHBF) and its association with systemic hemodynamics, histopathological and biochemical indicators of liver toxicity were studied in guinea pigs in vivo. The association of endothelin (ET) and/or Cremophor-EL (C-EL, vehicle in parenteral CsA preparation) with CsA effects was also investigated.

Main Methods: Animals were assigned into five groups; control, CsA, C-EL, Bosentan (non-selective ET receptor antagonist)+CsA, and BQ-123 (ET(A) receptor antagonist)+CsA.

The impact of human leukocyte antigen matching on transplant complications and immunosuppression dosage.

Administrative claims data facilitate ascertainment of outcomes not collected by the transplant registry and provide the opportunity to examine prescribed doses of immunosuppressive medications. Here, we examine the impact of human leukocyte antigen (HLA) matching on traditional outcomes, rejection and survival, and use novel methods to examine immunosuppresion doses and complication rates. The central hypothesis tested in this analysis is that HLA-matched recipients receive lower doses of immunosuppression and have fewer posttransplant complications.

The role of nitric oxide in the electrical field stimulation-induced contractions of sphincter of oddi and gallbladder strips in Guinea pigs.

The aim of this study was to investigate the modulatory role of nitric oxide (NO) in the electrical field stimulation (EFS)-induced contractions of isolated sphincter of Oddi (SO) and gallbladder strips from guinea pigs. EFS was used to activate the intrinsic nerves in SO and gallbladder strips. EFS produced frequency-dependent biphasic contractile responses in the SO strips.

Mechanism of action of the cisapride-induced vasodilatation in renal vasculature of rat.

Background & Objectives: Cisapride is a prokinetic agent with cholinomimetic and 5-HT4 receptor agonistic properties. It has been proposed that cisapride-induced hypotension is partly mediated by cholinergic system. The aim of this study was to investigate the mechanism of cisapride-induced dilatation in the rat isolated perfused kidney.

Calcium-antagonistic activity of sumatriptan in the rat anococcygeus muscle.

The relaxant effect of sumatriptan, a 5-HT(1B/1D) receptor agonist, on the rat anococcygeus muscle was investigated. Sumatriptan induced concentration-dependent relaxations of the phenylephrine-precontracted rat anococcygeus muscle. N(G)-nitro-L-arginine, methylene blue, glibenclamide, tetrodotoxin, indomethacin, GR 113808, GR 55562, methysergide, ketanserin, ICS 205930, clozapine, methiothepin, metergoline, mesulergine, and ritanserin did not inhibit the relaxations induced by sumatriptan.