In this study the role of adenosine A1 receptors of the CA1 region of hippocampus on piriform cortex–kindled seizures was investigated in rats. Obtained results showed that in kindled animals, bilateral microinjection of N6–cyclohexyladenosine (CHA), an adenosine A1 receptor agonist, at doses of 10 and 100 mM into the hippocampal CA1 region decreased the afterdischarge duration (ADD), stage 5 s...

Introduction:Adenosine as a potent vasodilator has physiological role in regulation of regional cerebral blood flow (rCBF). Metod: Laser-Dِoppler flowmetry technique was used to study pial vessels blood flow responses to adenosine receptors agonists and antagonist. Male Sprague Dawley rats (250-350g) that were housed in standard conditions, were anesthetized with Urethane (1.5g/kg). Adenosine ...

Primarily opioidergic and adenosine mechanisms are considered to be involved in the antinociceptive effects of antidepressants. This study was designed to determine the efficacy of acute venlafaxine administration in alleviating symptoms of neuropathic pain and the role of endogenous adenosine and opioid systems in this effect of venlafaxine. We have evaluated the effect of caffeine, a non-sele...

Abstract Despite the remarkable outcome of immune checkpoint inhibitors (ICIs) in non-small cell lung cancer (NSCLC), a large number patients remain unresponsive to this therapy. A key factor unresponsiveness ICIs is intrinsic therapeutic resistance where monocytic myeloid-derived suppressor cells (M-MDSCs) contribute significantly via suppressing CD8 +T mediated anti-tumor response. Our result...

introduction: the role of adenosine a1 receptors of the amygdala on entorhinal cortex kindled seizures was investigated. material and methods: animals were kindled by daily electrical stimutation of entorhinal cortex. in the full kindled animals, n6-cyclohexyladenosine (cha 10, 50, 100, 500óm), an adenosine a1 receptor agonist and 8-cyclopentyl- 1, 3, dimethylxanthine (cpt, 10, 20 óm), an adeno...

This study was designed to determine whether human hearts release adenosine, a possible regulator of coronary flow, during temporary myocardial ischemia and, if so, to examine the mechanisms involved. Release of adenosine from canine hearts had been reported during reactive hyperemia following brief coronary occlusion, and we initially confirmed this observation in six dogs hearts. Angina was t...

Adenosine is a signaling nucleoside that has been proposed to contribute to the pathogenesis of asthma and chronic obstructive pulmonary disease. Previous studies suggest that adenosine might play an important role in modulating levels of inflammatory mediators in the lung. Because airway epithelium is an important cellular source of inflammatory mediators, the objective of the present study wa...

The purpose of this study was to examine (1) whether endogenous adenosine receptors inhibit the release of epinephrine and norepinephrine from adrenal medulla in response to physiological and pharmacological stimuli and (2) whether the renin-angiotensin system modulates this effect of endogenous adenosine. We used a conscious animal model to approximate normal physiological conditions. Male Spr...

Shin, Hwa Kyoung, Yung Woo Shin, and Ki Whan Hong. Role of adenosine A2B receptors in vasodilation of rat pial artery and cerebral blood flow autoregulation. Am. J. Physiol. Heart Circ. Physiol. 278: H339–H344, 2000.—This study was aimed to investigate the underlying mechanism of vasodilation induced by the activation of A2B adenosine receptors in relation to cerebral blood flow (CBF) autoregul...