A study on the effects of vitamin D supplementation on hematological parameters and serum 25-hydroxy vitamin D in healthy dogs.

Background: Limited studies are available on vitamin D supplementation in dogs. This study evaluates the effect of a commercial vitamin D3 supplement on serum 25-hydroxy vitamin D as well as selected biochemical and hematological parameters in healthy dogs. Eight intact male adult dogs with a mean body weight of 20 kg from mixed breeds were included in the study.

The neuroprotective effects of Chalcones from Ashitaba on cuprizone-induced demyelination via modulation of brain-derived neurotrophic factor and tumor necrosis factor α.

Introduction: Multiple sclerosis (MS) is the most common demyelinating disease of the central nervous system. However, the limitations of available therapeutic strategies are frustrating, both in terms of their low efficacy and multiple side effects. Previous studies showed that natural compounds such as Chalcones possess neuroprotective effects on neurodegenerative disorders.

Effect of insulin and cinnamon extract on spatial memory and gene expression of GLUT1, 3, and 4 in streptozotocin-induced Alzheimer's model in rats.

Objectives: Since diminished hippocampal insulin signaling leads to memory impairment, insulin resistance and hyperinsulinemia are probably associated with Alzheimer's disease (AD). The effect of intracerebroventricular injection of insulin (Ins) and oral cinnamon extract (Cinn) on glucose transporter (GLUT) 1, 3, and 4 gene expressions in the hippocampus and spatial memory in a streptozotocin (STZ)-induced AD rat model was investigated in the present study.

Materials And Methods: Fifty-six adult male Sprague-Dawley rats (280±20 g) were allocated into eight distinct groups (n=7) of five controls (negative, Ins, Cinn, Ins+Cinn, and STZs) and three treatments (STZ+ Ins, STZ+ Cinn, and STZ+ Ins + Cinn).

The passive avoidance task ameliorate the toxic effects of bisphenol A on dopamine D1 receptor density in hippocampus, amygdala, and cerebellum of male rats.

Introduction: Dopamine D1 receptor seems to play a role in mediating plasticity. Therefore, the present study aimed to investigate the effects of passive avoidance tasks postexposed to BPA on dopamine D1 receptor density in the hippocampus, amygdala, and cerebellum of male rats.

Methods: Thirty-five male Sprague-Dawley rats weighing 220.

Possible therapeutic effect of royal jelly on endometriotic lesion size, pain sensitivity, and neurotrophic factors in a rat model of endometriosis.

Endometriosis is the abnormal growth of endometrial tissue. The goals of the study are: (1) Is any correlation between endometriosis pain and neurotrophins in the serum, dorsal root ganglion (DRG), and peritoneal fluid (PF) in rat models of experimental endometriosis?, (2) Possible therapeutic effects of royal jelly (RJ) on pain scores, size of endometriotic lesion, and neurotrophic factors. Forty-eight Sprague Dawley female rats weighing 205.

Assessing Pain Behavioral Responses and Neurotrophic Factors in the Dorsal Root Ganglion, Serum and Peritoneal Fluid in Rat Models of Endometriosis.

Pain is the most frequently reported symptom involving in endometriosis. The alterations of neurotrophic factors and certain neuropeptides in the dorsal root ganglion (DRG), as well as serum and peritoneal fluid (PF), were evaluated in rat models of endometriosis. Twenty-four Sprague Dawley female rats were selected and maintained in a standard condition with 12 hours' dark-light cycles.

Effects of Pretreatment With Ginseng Extract on Dopamine D2 Receptor Analgesia.

Introduction: The ginseng extract is an herb that has been used for many purposes such as analgesic effect. Dopamine D2 receptors are involved in the regulation of pain in humans. Therefore, the present investigation aims to study how pretreatment with aqueous-alcoholic extract of ginseng can affect dopamine D2 receptors' pain sensitivity.

The Cataleptic, Asymmetric, Analgesic, and Brain Biochemical Effects of Parkinson's Disease Can Be Affected by Infection.

Purpose: Parkinson's disease (PD) is a neurodegenerative disorder with progressive motor defects. Therefore, the aim of the present investigation was to examine whether catalepsy, asymmetry, and nociceptive behaviors; the Nissl-body and neuron distribution; brain-derived neurotrophic factor (BDNF); malondialdehyde (MDA); total antioxidant capacity (TAC) levels; and the percentage of dopamine depletion of striatal neurons in the rat model of Parkinson's disease (PD) can be affected by (TG) infection.

Methods: Fifty rats were divided into five groups: control (intact rats), sham (rats which received an intrastriatal injection of artificial cerebrospinal fluid (ACSF)), PD control (induction of PD without TG infection), TG control (rats infected by TG without PD induction), and PD infected (third week after PD induction, infection by TG was done).

could improve hippocampal tau protein and TNF levels and cognitive behavior defects in a rat model of Alzheimer's disease.

Objective: (ZM) is a plant with ethnopharmacological value which was recently tested to reduce symptoms of Alzheimer's disease (AD). The aim of the present study was to determine the effect of ZM essential oil on spatial cognitive and noncognitive behavior, as well as hippocampal tau protein and tumor necrosis factor alpha (TNFα) concentrations in rats with AD.

Materials And Methods: Thirty-five adult male Sprague Dawley rats (300±30 g) were randomly divided into 5 groups: control (intact rats); sham (received intracerebroventricular (ICV) microinjection of normal saline); AD control (rats with AD that did not receive any treatment); vehicle control (rats with AD that orally received tween-80, 5% (ZM essential oil vehicle) for 20 days) and experimental (rats with AD that orally received ZM essential oil 100 µl/kg/day for 20 days).

Neuroprotective Effect of Zataria Multiflora Essential Oil on Rats With Alzheimer Disease: A Mechanistic Study.

Introduction: Finding herbs with promising effects to prevent or postpone Alzheimer Disease (AD) is highly demanded. The present study aimed at clarifying plausible effects and related mechanism(s) of Zataria Multiflora Essential Oil (ZMEO) against memory impairment in a rat model of the AD.

Methods: Forty male adult rats were categorized into four groups and treated as follows: 1.

Effect of pharmacological doses of niacin on testicular structure and function in normal and diabetic rats.

Male diabetic patients may experience adverse changes in testicular functions or structure. Niacin has antidyslipidemic properties in diabetic patients. We aimed to clarify the effect of pharmacological doses of niacin on testicular structure and function of normal and diabetic rats.

Synergistic effect of spexin and progesterone on pain sensitivity attenuation in ovariectomized rats.

Spexin is a central modulator of nociception. The aim of the present study was to investigate the effect of intra-hippocampal CA3 (IHCA3) injection of spexin and spexin-progesterone co-administration on pain sensitivity in ovariectomized rat. Thirty-five adult female rats were divided into five groups.

Boswellic Acid Improves Cognitive Function in a Rat Model Through Its Antioxidant Activity: - Neuroprotective effect of Boswellic acid.

Objectives: Boswellic acid (BA), a compound isolated from the gum-resin of , is a pentacyclic terpenoid that is active against many inflammatory diseases, including cancer, arthritis, chronic colitis, ulcerative colitis, Crohn's disease, and memory impairment, but the mechanism is poorly understood. This study investigated the effects of boswellic acid on spatial learning and memory impairment induced by trimethyltin (TMT) in Wistar rats.

Methods: Forty male Wistar rats were randomly divided into 5 groups: Normal group, TMT-administrated rats (8.

Effect of Extremely Low Frequency Electromagnetic Field and GABAA Receptors on Serum Testosterone Level of Male Rats.

Background: GABA can influence the steroidogenesis in peripheral and central nervoussystems.

Objectives: The present study investigates the interactive effect of GABAA receptors and extremely low frequency electromagnetic field on serum testosterone level of male rats.

Patients And Methods: Fifty adult male rats were randomly assigned into 10 groups.

Niacin Ameliorates Lipid Disturbances due to Glucocorticoid Administration in Rats.

Objectives: This study was conducted to evaluate the effects of niacin on glucocorticoid-induced dyslipidemia and fatty liver in rats.

Materials And Methods: TWENTY FOUR ADULT MALE RATS WERE DIVIDED RANDOMLY INTO FOUR EQUAL GROUPS: 1- normal saline (control), 2- dexamathasone 0.125 mg/kg/day, i.

Hippocampal GABA(A) Receptor and Pain Sensitivity during Estrous Cycle in the Rat.

Background: Estradiol and progesterone as well as hippocampal GABA(A) receptors are believed to play a role in the modulation of pain. The aim of present study was to investigate the effect of intrahippocampal injections of GABA(A) receptor agonist (muscimol) and GABA(A) receptor antagonist (picrotoxin) on pain sensitivity during estrous cycle.

Methods: Pain sensitivity was evaluated in rats by formalin test during all stages of estrous cycle.

Acute and chronic exposure of chick embryo to ethanol alters brain neurosteroid levels.

Neurosteroids are modulators of neuronal function that may play important role in brain maturation. The aim of the present investigation was to study the effect of prenatal exposure to acute and chronic ethanol on brain progesterone, estradiol, and testosterone concentration on 10th and 15th days following egg incubation. Eggs were exposed to ethanol at 10 % in chronic treatment and 70 % in acute treatment.

Modulation of NR1 subunit of N-methyl-D-aspartate receptor by ovariectomy and passive avoidance learning.

Background: Learning and memory are the most intensively studied subjects in neuroscience. Two sites of mammalian brain which are important in learning and memory are CA1 region of hippocampus and Purkinje cell layer of cerebellum. So, the aim of present investigation was to study of the effect of ovariectomy and passive avoidance learning on NR1 subunit of N-methyl-D-aspartate (NMDA) receptor distribution in CA1 region of hippocampus and Purkinje cell layer of cerebellum.

Concentration of four heavy metals (cadmium, lead, mercury, and arsenic) in organs of two cyprinid fish (Cyprinus carpio and Capoeta sp.) from the Kor River (Iran).

Concentration of heavy metals in aquatic animals mainly occurs due to industrial contamination. In this study, the concentrations of four heavy metals (cadmium, lead, mercury, and arsenic) in organs of two cyprinid fish and in water collected from three sections of the Kor River, Iran were determined using the inductively coupled plasma method. Pathological and hormonal changes due to metal contamination were also measured.

CNS alpha 1 receptor in tonic pain during estrous cycle in rats.

Estrogen and progesterone are known to affect nociception. The plasma concentrations of these hormones vary during estrous cycle in rodents. The aim of the present study was to investigate the effect of evidence of alpha1 receptor agonist and antagonist on tonic pain in all phases of estrous cycle in female rats.

Evaluation of serum steroid hormones in schizophrenic patients.

Background: Recent studies have implicated the abnormalities in the gamma-aminobutyric acid (GABA) neurotransmmiter system in the pathophysiology of schizophrenia. There are also evidences indicating that steroids of central or peripheral origin may modulate GABAergic system through direct interaction with the GABAA receptor complex. These raise the possibility that alternations in serum steroid hormones may contribute to the pathophysiological process in the schizophrenia.