S.Sirri Bilge

• Professor
• Ondokuz Mayıs University

Neuroinflammation and the immune response are recognized as significant mechanisms contributing to the progression and pathophysiology of Parkinson’s disease (PD). Consequently, extensive research is being conducted on drugs targeting inflammation and immune response. Leflunomide, known for its anti‑inflammatory and immunomodulatory properties, is...

Oxidative stress is considered one of the mechanisms responsible for neurodegenerative diseases, especially for Parkinson’s disease. Since oxidative stress causes pathological changes in neuronal structures antioxidant compounds gained significant attention the last decades. Although several antioxidant compounds showed neuroprotective actions in P...

Rotenone is an industrial and environmental toxicant that has been strongly associated with neurodegeneration. It is clear that rotenone induces inflammatory and oxidative stress; however, information on the role of histone acetylation in neurotoxicity is limited. Epigenetic alterations, neuroinflammation, and oxidative stress play a role in the pr...

Numerous studies have investigated the role of agmatine in the central nervous system and indicated neuroprotective properties. In addition to its potent antioxidant effects, agmatine is an endogenous neuromodulator and has wide spectrum molecular actions on different receptor subtypes (NMDA, Imidazoline 1-2, alpha-2 adrenoreceptor, 5-HT2a, 5-HT3)...

The transient receptor potential ankyrin 1 (TRPA1), a member of the TRP superfamily, is widely distributed in the central nervous system (CNS) and plays an important role in pain and inflammation. However, no data has been reported regarding the effects of TRPA1 on epileptic seizures. Thus, this study was designed to investigate the sub-chronic eff...

Aim: Physicians mostly prescribe selective serotonin reuptake inhibitors in the treat-ment of depression in pregnancy. However, there is little information on teratogenic effects of selective serotonin reuptake inhibitors. This study aims to investigate the ef-fects of prenatal exposure to citalopram, one of the most prescribed antidepressants, on...

The effects of melatonin and melatonin analogs in experimental Parkinson’s disease (PD) models remain controversial. Agomelatine, a novel analog of melatonin, is both agonists for melatonin-1 and melatonin-2 receptors and antagonist of 5-HT2C receptors. While agomelatine has been commonly used as an anti-depressant and sleep drug, information about...

Nonsteroidal anti-inflammatory drugs (NSAIDs) are commonly used for their anti-inflammatory, analgesic, and antipyretic effects. NSAIDs generally work by blocking the production of prostaglandins (PGs) through the inhibition of two cyclooxygenase enzymes. PGs are key factors in many cellular processes, such as gastrointestinal cytoprotection, hemos...

Tianeptine is a clinically effective atypical antidepressant with distinct neurochemical properties. In this study, we aimed to investigate the contribution of opioid receptors in the antinociceptive effect of tianeptine on visceral pain in awake rats and to differentiate the subtype and the localization (central and/or peripheral) of these opioid...

In this study, we aimed to study the possible preventive effect of docosahexaenoic acid (DHA), a dietary omega-3 fatty acid, on toxicity caused by chlorpyrifos (CPF). Six groups of Sprague Dawley rats (200–250 g) consisting of equal numbers of males and females (n = 8) were assigned to study. The rats were orally given for 5 days. The control group...

Objectives We aimed to investigate the effect of a carbohydrate-rich diet on detrusor contractility in rats. Materials and Methods Sprague-Dawley rats were randomized into two groups. The control group received regular food and water. The study group received carbohydrate-rich diet for six weeks. The rats' detrusor muscle was isolated for pharmaco...

Non-steroidal anti-inflammatory drugs (NSAIDs), which are widely used for the treatment of rheumatic arthritis, pain, and many different types of inflammatory disorders, cause serious gastrointestinal (GI) side effects. The free carboxylic acid group existing on their chemical structure is correlated with GI toxicity related with all routine NSAIDs...

OBJECTIVES: Irrational drug use results in drug interactions, treatment noncompliance, and drug resistance. Rational pharmacotherapy education is being implemented in many faculties of medicine. Our aim is to introduce rational pharmacotherapy education by clinicians and to evaluate task-based rational drug therapy education in the clinical context...

Background and Objective: Certain antidepressant drugs cause urinary incontinence while some of that are used to treat incontinence. This study was aimed to investigate the possible effects of venlafaxine in rat bladder detrusor muscle and the mechanisms involved in the inhibitory effect of contraction. Methodology: Strips of rat detrusor muscle we...

Objectives: Irrational drug use results in drug interactions, treatment noncompliance, and drug resistance. Rational pharmacotherapy education is being implemented in many faculties of medicine. Our aim is to introduce rational pharmacotherapy education by clinicians and to evaluate task-based rational drug therapy education in the clinical contex...

Objective: We aimed to investigate the effects of a Carbohydrate-rich diet on vas deferens contractility and histology. Materials and Methods: Twenty mature male rats were subjected into two groups. The control group received regular food and water and the study group received regular food and a carbohydrate-rich liquid diet mixture of 37–40% fruct...

Background: Some studies have suggested that the intrathecal use of cyclooxygenase enzyme inhibitors provides an anti-nociceptive effect. Therefore, the occurrence of side effects seen in systemic usage can be eliminated. Aims: The primary objective of this experimental, randomized, controlled trial was to test the hypothesis asserting that intrat...

Objective: We aimed to investigate the effects of a Carbohydrate-rich diet on vas deferens contractility and histology. Materials and Methods: Twenty mature male rats were randomized into two groups. The control group received regular food and water and the study group received regular food and a carbohydrate-rich liquid diet mixture of 37–40% fruc...

Blood brain barrier (BBB) is a special cellular system that enables the nervous system to maintain in brains homeostasis by allowing the essential materials to pass while denying harmful substances. All of the drugs with high molecular weight and 98%of the drugs with low molecular weight cannot pass through theBBB. Only a few high liposoluble molec...

Objectives: To investigate nonsteroidal anti-inflammatory drugs effectiveness in colorectal distension (CRD)-induced visceral pain model. Materials and Methods: Male Sprague–Dawley (250–300 g) rats were anesthetized with ketamine (50 mg/kg, intraperitoneally [i.p.]) and chlorpromazine (25 mg/kg, i.p.). Two bipolar Teflon-coated Ni/Cr wire electrode...

Background: Alpha2 agonists contribute to pain control at the level of the medulla spinalis. Alpha2 agonists are generally added to local anaesthetics to prolong spinal or epidural anaesthesia time. Aims: In the present study, we aimed to evaluate the antinociceptive and neurotoxic effects of dexmedetomidine given intracerebroventricularly for 5 d...

Objective: Dexmedetomidine has been reported to produce analgesia after intrathecal administration. In the present study the α2-adrenoceptor agonist dexmedetomidine was evaluated for its potential spinal neurotoxic effects. Material and methods: Three days after intrathecal cannulation, rats were administered either dexmedetomidine (3 μg/30 μL,...

Tianeptine is an unusual tricyclic antidepressant drug. In this study, we aimed to investigate the antinociceptive effect of tianeptine on visceral pain in rats and to determine whether possible antinociceptive effect of tianeptine is mediated by serotonergic (5-HT(2,3)) and noradrenergic (α(1,2)) receptor subtypes. Male Sprague Dawley rats (250-30...

In this study, synthesis of a series of3,6-diaryl-l,2,4-triazoIo[3,4-b]-1, 3,4-thiadiazines by the condensation of appropriate 5-(3,4-dichlorophenyl)-2- (aroylmethyl)thio-1,3,4-oxadiazoles and hydrazine hydrate in acetic acid is described. The structures of newly synthesized compounds were confirmed by IR, 'H-NMR and elemental analysis. All the com...

To determine whether twisting of the ipsilateral vas deferens results in alteration of its contractility. Experimental study. University animal lab. 24 male Wistar rats. All the rats in the experimental groups underwent spermatic cord torsion. Durations of torsion were 45 minutes, 3 hours, and 24 hours in groups 2, 3, and 4, respectively. In groups...

Acute carbon monoxide (CO) poisoning can cause early and persistent damages in tissues sensitive to hypoxia. This study investigated serum heart-type fatty acid-binding protein (H-FABP) levels as a biomarker of acute CO poisoning in rats. The rats were exposed to a mixture of either 3000 (group A) or 5000 (group B) parts per million (ppm) CO in air...

In this study, the effects of non-steroidal anti-inflammatory drugs (NSAIDs) from, different groups on various physiological mechanisms involving bladder muscle motility were investigated in isolated rat: detrusor strips. For this purpose, in the presence of aspirin, indomethacin and ketoprofen the responses of isolated detrusor strips to carbachol...

Organophosphate (OP) compounds are a large class of chemicals, many of which are used as pesticides. It is suggested that OPs specifically affect glia and neurons. Effects of acute exposure to chlorpyrifos (CPF), which is a common organophosphorus pesticide used worldwide, on neuron-specific enolase (NSE) and S100B levels in rat blood during 7 days...

Organophosphate (OP) compounds are a large class of chemicals, many of which are used as pesticides. It is suggested that OPs specifically affect glia and neurons. Effects of acute exposure to chlorpyrifos (CPF), which is a common orga-nophosphorus pesticide used worldwide, on neuron-specific enolase (NSE) and S100B levels in rat blood during 7 day...

In comparison with cutaneous pain, the role of alpha(2)-adrenoceptor (alpha(2)-AR) agonists in visceral pain has not been extensively examined. We aimed to characterize the antinociceptive effect of IV dexmedetomidine on visceral pain in rats and to determine whether antinociception thus produced is mediated by opioid receptors. Male Sprague Dawley...

We aimed to establish the physical, motor, and cognitive teratogenic effect of levetiracetam exposure throughout pregnancy in rats. Thirty-two Sprague-Dawley pregnant female rats were divided into four groups. Groups 1-3 were treated with different doses of levetiracetam (25, 50, 100 mg/kg/d) from gestational days 1 to 18. Group 4 (control group) w...

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

Cytarabine (ARA-C) has been used for many years in the treatment of patients with leukemia and lymphoma. Gastrointestinal ulceration and mucositis are two of the well-known side effects of ARA-C. We set out to investigate whether vitamin A (VA) can help prevent ARA-C-induced mucosal lesions in mice. Mice were divided into 5 groups. Group I (control...

Selective serotonin reuptake inhibitors (SSRIs) induced delayed ejaculation as an adverse effect. Cause of this they have been used to treat Premature Ejaculation. Recent studies have suggested that sildenafil, a selective inhibitor of cyclic GMP specific phosphodiesterase type 5, could be beneficial in the treatment of PE. However, some studies de...

Serotonin (5-hydroxytryptamine, 5-HT) reuptake inhibitors represent important targets for the development of new treatments for detrusor overactivity and urinary incontinence. The present study was undertaken to investigate the effects of the forced swimming test (FST) on the contractile response of isolated rat detrusor muscle and to examine the e...

Echo-planar magnetic resonance imaging (EP-MRI), which is novel variant of MRI, is thought to have antidepressant properties in humans and animal models. Using the forced swimming test (FST), we investigated which monoaminergic system in mice is affected by EP-MRI. The short- and long-term effects of EP-MRI on immobility time in the FST and motor a...

Several 5-(3,4-dichlorophenyl)-2-(aroylmethyl)thio-1,3,4-oxadiazoles were synthesized and characterized by elemental analyses, IR and nuclear magnetic resonance spectra. All compounds were evaluated for anti-inflammatory activity by determining their ability to provide protection against carregeenan-induced edema in rat paw. In addition, ulcerogeni...

This study describes the chemical synthesis and pharmacological evaluation of some new 1-aryl-3-[(4-benzyl)piperidine-1-yl]propane derivatives as antidepressants. The structures attributed to the compounds were elucidated using IR and 1H-NMR spectroscopic techniques besides elemental analysis. The antidepressant-like effect of these compounds was a...

Phosphodiesterease type 5 (PDE5), nitric oxide synthase (NOS) and guanilate cyclase have shown high activity in areas responsible to behaviours in brain. It is alleged that PDE5 inhibitor sildenafil which is used in erectile disfunction passes blood brain barrier and can cause adverse effects related to behaviours. The aim of this study, to investi...

To evaluate the effect of sildenafil, a selective inhibitor of cyclic guanosine monophosphate (cGMP)-selective type 5 phosphodiesterase, on isolated rat vas deferens and its connections with the purinergic system. Epididymal and prostatic portions of isolated vas deferens were placed in organ baths containing Krebs' solution. Contractions were indu...

Several studies have shown a role of nitric oxide/cyclic guanosine monophosphate signaling pathway in the regulation of anxiety. The effects of the phosphodiesterase (PDE) 5 inhibitors on anxiety are not fully understood. The aim of present study was to investigate the possible role of sildenafil, an inhibitor of cyclic GMP-specific phosphodiestera...

The present study was performed to investigate the effect of propofol on anxiety using the elevated plus-maze test. Groups of mice received propofol (20, 40, 60 mg/kg) or diazepam (2 mg/kg), caffeine (30 mg/kg), L-arginine (100 mg/kg), m-chlorophenylpiperazine (m-CPP, 2.5 mg/kg) and then were placed in an elevated plus-maze that was composed of two...

The effects of N-nitro-L-arginine-methyl ester (L-NAME) a nitric oxide (NO) synthase inhibitor and L-arginine, a NO precursor, were investigated on lidocaine-induced convulsions. In the first experiment, four groups of mice received physiological saline (0.9%), L-arginine (300 mg/kg, i.p.), L-NAME (100 mg/kg, i.p.) and diazepam (2 mg/kg), respectiv...