Saeed Niazmand

Department of Physiology and Cardiovascular Research Center, School of Medicine Mashhad University of Medical Sciences Mashhad, Iran

[ 1 ] - A comparison between the effects of Portulaca oleracea seeds extract and valsartan on echocardiographic and hemodynamic parameters in rats with levothyroxine-induced thyrotoxicosis

Objective: The aim of the present study was to compare the effects of Portulaca oleracea (Po) seeds extract and those of valsartan on cardiac function in levothyroxine (T4)-treated rats. Materials and Methods: Forty Wistar rats were divided into four groups (n=10): control, levothyroxine (T4), T4 plus valsartan (T4-Val) and T4 plus hydro-alcoholic extract of the P. oleracea seeds (T4-Po). Contr...

[ 2 ] - A comparison of the effects of Portulaca oleracea seeds hydro-alcoholic extract and Vitamin C on biochemical, hemodynamic and functional parameters in cardiac tissue of rats with subclinical hyperthyroidism

Objective: The present study was performed to evaluate the effects of hydro-alcoholic extract of Portulaca oleracea (P. oleracea) seeds and Vitamin C on biochemical and hemodynamic parameters in cardiac tissue of rats with subclinical hyperthyroidism. Materials and Methods: Forty eight male rats were divided into six groups of 8 and treated for 4 weeks. T4 group received daily injection of levo...

[ 3 ] - Salix alba attenuated oxidative stress in the heart and kidney of hypercholesterolemic rabbits

Objective: Oxidative stress plays a critical role in the development of hypercholesterolemia-induced complications. This study evaluated the effects of aspirin and Salix alba hydroethanolic extract on oxidative stress in the heart and kidney of hypercholesterolemic rabbits. Materials and Methods: The antioxidant activity, as well as total phenolic and salicin content of S. alba (Sa) extract wer...

[ 4 ] - Nigella sativa seed decreases endothelial dysfunction in streptozotocin-induced diabetic rat aorta

Objective: Diabetes is an important risk factor for cardiovascular events. The great percent of morbidity in patients with diabetes is due to endothelial dysfunction. The present study investigated the effects of hydroalcholic extract of Nigella sativa (N. sativa) on contractile and dilatation response of isolated aorta in streptozotocin (STZ)-induced diabetic rat. Materials and Methods: Rats ...

[ 5 ] - The effects of hydroalcoholic extract of Nigella sativa seed on oxidative stress in hippocampus of STZ-induced diabetic rats

Objective: Oxidative stress plays an important role in the etiology of diabetic complications. Diabetes impairs hippocampus neurogenesis, synaptic plasticity, and learning. The aim of this study was to investigate the effects of hydroalcoholic extract of Nigella sativa seed on oxidative stress in STZ-induced diabetic rats' hippocampus. Materials and Methods: Diabetes induced by 60 mg/kg STZ, i....

[ 6 ] - The role for nitric oxide on the effects of hydroalcoholic extract of Achillea wilhelmsii on seizure

Objective: Nitric oxide (NO) plays an important role both as a consequence and as a cause of epileptic seizures.Regarding the central nervous system depressant effects of Achillea wilhelmsii (A. wilhelmsii), as well the effects of the plant on NO, this study was aimed to elucidatethe possible role for nitric oxide on the effects of hydroalcoholic extract of A. wilhelmsii on pentylenetetrazole (...

[ 7 ] - Hypotensive effect of Achillea wilhelmsii aqueous-ethanolic extract in rabbit

Objective: For many years in herbal medicine the antihypertensive and lowering blood lipid properties of Achillea wilhelmsii (A. wilhelmsii) have been suggested. In the present study the impacts of the plant extract on rabbit’s blood pressure and heart rate have been investigated. Materials and Methods: Twelve NWZ rabbits weighed 2-3 kg were randomly divided into two groups of 6 rabbits. The t...

[ 8 ] - In vivo effects of allogeneic mesenchymal stem cells in a rat model of acute ischemic kidney injury

Objective(s): Renal ischemia-reperfusion injury (IRI) as a severe condition of acute kidney injury (AKI) is the most common clinical problem with high mortality rates of 35-60% deaths in hospital. Mesenchymal stem cells (MSC) due to unique regenerative characteristics are ideal candidates for the treatment of the ischemic injuries. This work is focused on the administration of MSC to IRI-induce...

[ 9 ] - Evaluation of nicotinic receptor of pedunculopontine tegmental nucleus in central cardiovascular regulation in anesthetized rat

Objective(s): Cholinergic neurons are important neurons in the Pedunculopontine tegmental nucleus (PPT). In this study, nicotinic receptor of the PPT in central cardiovascular regulation in the anesthetized rat was evaluated. Materials and Methods: Saline, acetylcholine (Ach; doses: 90 and 150 nmol), hexamethonium (Hexa; doses: 100 and 300 nmol) and higher doses of Hexa (300 nmol) + Ach (150 nm...

[ 10 ] - Cardiovascular effects of nitrergic system of the pedunculopon-tine tegmental nucleus in anesthetized rats

Objective(s): Nitric oxide (NO) is an important neurotransmitter in central nervous system involved in central cardiovascular regulation. The presence of NO in the pedunculopontine tegmental (PPT) nucleus has been shown, but its cardiovascular effect has not been determined. In the present study, the cardiovascular effect of NO in the PPT nucleus was evaluated. Materials and Methods: After indu...

[ 11 ] - The Effects of Achillea wilhelmsii Extract on Rat’s Gastric Motility at Basal and Vagal Stimulated Conditions

Objective(s) Achillea genius is widely used in traditional medicine for gastrointestinal disorders. The aim of this study was to investigate the effects of aqueous-ethanol extract of Achillea wilhelmsii on rat’s gastric motility in basal and vagal stimulated conditions. Materials and Methods Twenty four Wistar rats were randomly divided into two groups: control and test. The extract was prep...

[ 12 ] - The Inhibitory Effect of Ziziphora clinopodioides Lam. on Gastric Acid Output at Basal, Vagotomized and Vagal Stimulated Conditions in Rat

Objective(s) Ziziphora clinopodioides Lam. is a plant widely used in Iranian traditional medicine for gastrointestinal disorders. Several reports have demonstrated antibacterial (Helicobacteria pylori), antioxidant and anti‌inflammatory properties of Z. clinopodioides. The aim of this study was to investigate the effects of aqueous- ethanol extract of Z. clinopodioides on rat’s gastric acid ou...

[ 13 ] - اثر عصاره آبی - الکلی گیاه کلپوره (Teucrium polium L.) بر فشار خون، ضربان قلب و فشار درون بطنی خرگوش

مقدمه: کلپوره از تیره نعناع، گیاهی علفی است که مصارف دارویی دارد. در سال‌های اخیر اثرات ضد‌دیابت، ضد‌اسپاسم، ضد‌باکتری و کاهش‌دهنده چربی و فشار خون آن گزارش شده است ولی تا‌کنون اثرات قلبی - عروقی آن در یک مطالعه بررسی نشده است. هدف: در این تحقیق اثر عصاره آبی - الکلی سرشاخه و برگ‌های این گیاه بر متوسط فشار خون شریانی‌، تعداد ضربان قلب و فشار درون بطنی خرگوش به صورت in vivo بررسی شد. روش بررسی...

[ 14 ] - اثر عصاره آبی ـ الکلی بومادران (Achillea wilhelmsii) بر میزان ترشح اسید معده موش صحرایی تحت شرایط پایه، قطع و تحریک عصب واگ

سابقه و هدف: بومادران، از تیرهی کاسنی، گیاهی است که در سالهای اخیر اثرات ضداکسیدانی، ضدالتهابی، ضداسپاسم و ضدمیکروبی آن گزارش شده است، این گیاه در طب سنتی برای ناراحتیهای گوارشی کاربرد دارد ولی در مورد اثرات آن بر ترشح اسید معده تحقیقی صورت نگرفته است. مواد و روشها: 24 سر، موش صحرایی نژاد ویستار با وزن ( g 250-200)، به طور تصادفی به دو گروه دوازدهتایی کنترل و آزمون تقسیم شدند. پس از بیهوشی...

[ 15 ] - بررسی اثرات زردچوبه و روغن گاوی بر درمان زخم‏های تجربی معده در موش صحرایی

هدف: این مطالعه جهت بررسی اثرات درمانی ترکیب پودر ریزوم زردچوبه و روغن گاوی در درمان زخم‏های تجربی معده در موش‏ صحرایی انجام گرفت. مواد و روش‏ها: ایجاد زخم معده در موش‏های صحرایی نر تحت 48 ساعت گرسنگی نگه‏داری شده 250 تا 300 گرمی با استفاده از ایندومتاسین خوراکی (50 میلی‏گرم بر کیلوگرم حل شده در کربوکسی متیل سلولز 1 درصد) انجام شد. حیوانات به‏صورت تصادفی به 5 گروه تقسیم شدند. گروه‏ سالم و غیر ...

[ 16 ] - مقایسه اثر عصاره آبی– الکلی تخم سیاه‌دانه و متفورمین بر پارامترهای بیوشیمیایی خون در موش‌های صحرایی دیابتی‌شده با استرپتوزوتوسین

اهداف: بیماری دیابت با افزایش سطح قندخون ناشی از فقدان انسولین یا مقاومت بافت‌های محیطی به انسولین و یا هر دو همراه است. هدف از این مطالعه، بررسی اثرات عصاره آبی- الکلی تخم سیا‌ه‌دانه بر پارامترهای بیوشیمیایی خون در موش‌های صحرایی نر دیابتی‌شده با استرپتوزوتوسین بود. مواد و روش ‌ ها: این مطالعه مداخله‌ای با استفاده از 60 سر موش صحرایی نر انجام شد. حیوانات به‌طور تصادفی به 6 گروه 10تایی کنتر...

[ 17 ] - اثر عصاره آبی- الکلی سیاه دانه بر ترشح اسید و موکوس معدی در شرایط مهار سیکلواکسیژناز در موش‌های صحرایی

چکیده اهداف: در مطالعات مختلف و همچنین در طب سنتی، خواص بسیار زیادی برای سیاه‌دانه، از جمله اثرات آنتی‌اکسیدانی و محافظت‌کننده مخاط معده گزارش شده است. هدف از این مطالعه، بررسی اثر عصاره آبی- الکلی سیاه‌دانه بر ترشح اسید و موکوس معدی در شرایط مهار سیکلواکسیژناز بود. مواد و روش‌ها: این مطالعه مداخله‌ای با استفاده از 40 سر موش صحرایی نر نژاد ویستار انجام شد. موش‌های صحرایی به 5 گروه کنترل مثبت ...

[ 18 ] - Is there any change in the pattern of bacterial translocation with increased time of the obstruction?

Introduction: Bacterial translocation is defined as the passage of bacteria from intestinal tract to the extraintestinal organs such as the peritoneum and blood circulation. The aim of this study is to examine bacterial translocation (regarding type of bacteria and effect of time of obstruction on bacterial translocation) from intestinal lumen to the peritoneum and viscera in acute, simple mec...

[ 19 ] - The Comparison of Antioxidant Effect of Aspirin, Metformin, Atorvastatin and Captopril Co-administration in the Heart and Kidney Tissues of Diabetic Rats

The present study investigated the effects of co-administration of aspirin, metformin, atorvastatin and captopril on serum lipid profile and oxidative stress in the heart and kidney of streptozotocin-induced diabetic rats. In this study, rats were randomly divided into the following eleven groups: control (Cont.), and diabetic (D), as well as 9 groups that were treated with metformin (M, 300 mg...