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排序方式: 共有196条查询结果,搜索用时 15 毫秒
1.
Both Human Immunodeficiency Virus Cellular DNA Sequencing and Plasma RNA Sequencing Are Useful for Detection of Drug Resistance Mutations in Blood Samples from Antiretroviral-Drug-Naive Patients
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2.
Vinicio Granados-Soto Marcelo de O. Rufino Lúcia D. Gomes Lopes Srgio H. Ferreira 《European journal of pharmacology》1997,340(2-3)
The effect of inhibition of nitric oxide synthesis and guanylate cyclase on the peripheral antinociceptive effect of morphine was assessed by using the formalin test in the rat. Saline, NG-monomethyl-
-arginine, a nitric oxide synthesis inhibitor (50 μg) and methylene blue, a guanylate cyclase inhibitor (500 μg), did not exhibit any antinociceptive activity. However, morphine (10 μg) produced a significant antinociceptive effect in phases 2a and 2b, which was reduced by pretreatment with either NG-monomethyl-
-arginine or methylene blue. These results suggest that the local administration of morphine induces antinociception by the activation of the
-arginine–nitric oxide–cGMP pathway. 相似文献
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Flavio Tern‐Rosales Roberto Medina‐Santilln Gerardo Reyes‐García Vinicio Granados‐Soto 《Drug development research》2005,66(4):286-294
There is evidence that B vitamins produce antinociception in animals. However, potentiation of NSAID‐induced antinociception by B vitamins is unclear. The current study was designed to investigate the antinociceptive interaction between a mixture of B vitamins and either acetaminophen or metamizol. Acetaminophen (56–316 mg/kg), metamizol (32–178 mg/kg), and the mixture of B vitamins (32–178 mg/kg of thiamine, pyridoxine, and cyanocobalamin in a 100:100:1 proportion, respectively) or a combination of each drug with the B vitamins mixture was administered orally to female Wistar rats, and the antinociceptive effect determined in the formalin test. Isobolographic analyses were used to define the nature of the interaction between NSAIDs and B vitamins. Oral administration of either drug produced a dose‐related antinociceptive effect. Isobolographic analyses revealed that both acetaminophen or metamizol and the B vitamins mixture interacted synergistically in the formalin test, suggesting that these two combinations could be useful in treating inflammatory pain states. Drug Dev. Res. 66:286–294, 2006. © 2006 Wiley‐Liss, Inc. 相似文献
5.
Hepatocellular carcinoma (HCC) is the fifth most common cancer worldwide and the third leading cause of cancer death. Recent epidemiological data indicate that the mortality rate of HCC will double over the next decades in the USA and Europe. Liver cancer progresses in a large percentage of cases during the clinical course of chronic fibro‐inflammatory liver diseases leading to cirrhosis. Therefore, HCC development is regarded as the result of different environmental risk factors each involving different genetic, epigenetic‐ and chromosomal alterations and gene mutations. During tumour progression, the malignant hepatocytes and the activated hepatic stellate cells are accompanied by cancer‐associated fibroblasts, myofibroblasts and immune cells generally called tumour stromal cells. This new and dynamic milieu further enhances the responsiveness of tumour cells towards soluble mediators secreted by tumour stromal cells, thus directly affecting the malignant hepatocytes. This results in altered molecular pathways with cell proliferation as the most important mechanism of liver cancer progression. Given this contextual complexity, it is of utmost importance to characterize the molecular pathogenesis of HCC, and to identify the dominant pathways/drivers and aberrant signalling pathways. This will allow an effective therapy for HCC that should combine strategies affecting both cancer and the tumour stromal cells. This review provides an overview of the recent challenges and issues regarding hepatic stellate cells, extracellular matrix dynamics, liver fibrosis/cirrhosis and therapy, tumour microenvironment and HCC. 相似文献
6.
5‐HT2B Receptor Antagonists Reduce Nerve Injury‐Induced Tactile Allodynia and Expression of 5‐HT2B Receptors
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Jorge B. Pineda‐Farias Isabel Velázquez‐Lagunas Paulino Barragán‐Iglesias Claudia Cervantes‐Durán Vinicio Granados‐Soto 《Drug development research》2015,76(1):31-39
Preclinical Research |
7.
Maritza Del Carmen Quezada‐Conde Patricia de Lourdes Alvarez‐Velasco Edisson Fernando Lopez Marco Vinicio Medina Renata Pereira de Samuel Marques Marcia Turolla Wanderley E. Michel-Crosato Claudio Mendes Pannuti Antonio Carlos Frias Daniela Prcida Raggio Fausto Medeiros Mendes 《Dental traumatology》2020,36(5):510-517
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9.
Assessment of the antinociceptive and ulcerogenic activity of the tapentadol–diclofenac combination in rodents
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Juan R. Zapata‐Morales Ángel J. Alonso‐Castro Vinicio Granados‐Soto Sergio Sánchez‐Enriquez Mario A. Isiordia‐Espinoza 《Drug development research》2018,79(1):38-44
Preclinical Research & Development |
10.
The possible pronociceptive role of peripheral and spinal 5-HT7 receptors in the formalin test was assessed. Local administration of 5-HT7 (SB-269970, 2.5-77.1 nmol/paw), but not 5-HT(1A) (WAY-100635, 1-60 nmol/paw), receptor antagonist significantly reduced formalin-induced flinching. Local 5-hydroxytryptamine (5-HT, 3-100 nmol/paw) or 5-carboxamidotryptamine (5-CT, 0.3-3 nmol/paw) (a 5-HT7/1A receptor agonist) augmented, in a dose-dependent manner, 0.5% formalin-induced nociceptive behavior. The local pronociceptive effect of 5-HT or 5-CT was significantly reduced by SB-269970 (25 and 77.1 nmol/paw), but not by WAY-100635 (10 nmol/paw). 5-HT7 receptors were observed in myelinated and unmyelinated axons of the digital nerves in rat hindpaw. Intrathecal SB-269970 (2.5-77.1 nmol/rat) or WAY-100635 (1-50 nmol/rat) did not modify 1% formalin-induced nociceptive behavior. Spinal 5-HT (25-200 nmol/rat) significantly reduced formalin-induced flinching behavior during phase 2. At lower doses (0.1-3 nmol/rat) intrathecal 5-CT dose-dependently increased flinching during phase 2. In contrast, higher doses (10-30 nmol/rat) of 5-CT reduced formalin-induced nociceptive behavior during both phases. The spinal pronociceptive effect of 5-CT was reduced by SB-269970 (7.7-77 nmol/rat), but not by WAY-100635 (10 nmol/rat). In addition, the spinal antinociceptive effect of 5-CT was partially reversed by WAY-100635 (10 nmol/rat). The spinal antinociceptive effect of 5-HT was unaffected either by SB-269970 (77 nmol/rat) or WAY-100635 (10 nmol/rat). Data suggest that 5-HT7, but not 5-HT1A, receptors play a pronociceptive role in peripheral and spinal sites in the rat formalin test. 相似文献