2008
Ethyl pyruvate reduces germ cell–specific apoptosis and oxidative stress in rat model of testicular torsion/detorsion
Payabvash S, Kiumehr S, Tavangar SM, Dehpour AR. Ethyl pyruvate reduces germ cell–specific apoptosis and oxidative stress in rat model of testicular torsion/detorsion. Journal Of Pediatric Surgery 2008, 43: 705-712. PMID: 18405719, DOI: 10.1016/j.jpedsurg.2007.12.063.Peer-Reviewed Original ResearchConceptsEthyl pyruvate solutionRinger's ethyl pyruvate solutionProtective effectRight testisTissue damageMPO activityTesticular torsionGroup 2Sperm countGerm cell apoptosis indicesLong-term testicular functionTesticular torsion/detorsionGerm cell-specific apoptosisLipid peroxidationApoptotic tissue damageTestis tissue damageTorsion/detorsionGroup 2 ratsAnti-inflammatory propertiesSprague-Dawley ratsGroup 24 hoursEpididymal sperm concentrationEthyl pyruvateCell apoptosis indexPyruvate solution
2007
Salutary Effects of N-Acetylcysteine on Apoptotic Damage in a Rat Model of Testicular Torsion
Payabvash S, Salmasi AH, Kiumehr S, Tavangar SM, Nourbakhsh B, Faghihi SH, Dehpour AR. Salutary Effects of N-Acetylcysteine on Apoptotic Damage in a Rat Model of Testicular Torsion. Urologia Internationalis 2007, 79: 248-254. PMID: 17940358, DOI: 10.1159/000107958.Peer-Reviewed Original ResearchConceptsAdministration of NACGerm cell apoptosis indicesIschemia/reperfusion injuryTorsion/detorsionCell apoptosis indexRat modelN-acetylcysteineApoptosis indexReperfusion injuryTesticular torsionProtective effectGroup 2Control groupTesticular torsion/detorsionNAC 30 minRenal tissue damageSprague-Dawley ratsGroup 1 animalsGerm cell apoptosisIntraperitoneal injectionSham operationSaline injectionSystemic administrationTherapeutic doseAntioxidant balanceEndogenous opioids modulate hepatocyte apoptosis in a rat model of chronic cholestasis: the role of oxidative stress
Payabvash S, Kiumehr S, Nezami BG, Zandieh A, Anvari P, Tavangar SM, Dehpour AR. Endogenous opioids modulate hepatocyte apoptosis in a rat model of chronic cholestasis: the role of oxidative stress. Liver International 2007, 27: 538-547. PMID: 17403194, DOI: 10.1111/j.1478-3231.2007.01457.x.Peer-Reviewed Original ResearchConceptsAnti-oxidant balanceBile duct ligationChronic cholestasisEndogenous opioidsCholestatic ratsHepatocyte apoptosisOpioid antagonistRat modelHepatic lipid peroxidation levelsSerum liver enzymesCholestatic liver diseaseEndogenous opioid systemHepatic glutathione levelsAnti-oxidant defensesLipid peroxidation levelsAnti-oxidant enzyme activitiesChronic treatmentNaltrexone treatmentCholestatic animalsLiver diseaseBDL ratsHepatic damageDuct ligationLiver enzymesCholestasis
2006
Chronic morphine treatment induces oxidant and apoptotic damage in the mice liver
Payabvash S, Beheshtian A, Salmasi AH, Kiumehr S, Ghahremani MH, Tavangar SM, Sabzevari O, Dehpour AR. Chronic morphine treatment induces oxidant and apoptotic damage in the mice liver. Life Sciences 2006, 79: 972-980. PMID: 16750225, DOI: 10.1016/j.lfs.2006.05.008.Peer-Reviewed Original ResearchConceptsChronic morphine treatmentMorphine treatmentMorphine administrationHigh dosesInduction of apoptosisInduction of liverHepatic glutathione concentrationAntioxidant defenseLiver antioxidant defensesObserved adverse effectsPro-oxidant effectsCancer painEnzymatic antioxidant defensesOpioid analgesicsChronic painOpioid drugsTumor spreadOpioid receptorsSame dosesHepatotoxic effectsProtective roleTumor growthLow dosesMorphineHepatocyte apoptosis