2023
Early brain microstructural development among preterm infants requiring caesarean section versus those delivered vaginally
Bobba P, Weber C, Malhotra A, Bahtiyar M, Copel J, Taylor S, Ment L, Payabvash S. Early brain microstructural development among preterm infants requiring caesarean section versus those delivered vaginally. Scientific Reports 2023, 13: 21514. PMID: 38057452, PMCID: PMC10700578, DOI: 10.1038/s41598-023-48963-z.Peer-Reviewed Original ResearchImpact of postnatal weight gain on brain white matter maturation in very preterm infants
Bobba P, Weber C, Higaki A, Mukherjee P, Scheinost D, Constable R, Ment L, Taylor S, Payabvash S. Impact of postnatal weight gain on brain white matter maturation in very preterm infants. Journal Of Neuroimaging 2023, 33: 991-1002. PMID: 37483073, PMCID: PMC10800683, DOI: 10.1111/jon.13145.Peer-Reviewed Original ResearchConceptsBirth weight z-scoreMagnetic resonance imagingVery preterm infantsPostnatal weight gainWeight z-scoreWhite matter maturationBirth weightDiffusion tensor imagingNeurological outcomePreterm infantsGestational ageWeight gainCorpus callosumHigher birth weight z-scoresBrain white matter maturationLong-term neurological deficitsZ-scoreBrain developmentWeight z-score changeWM tractsZ-score changeWM maturationWeeks of lifeNeurological deficitsNutritional intervention
2022
Age‐related topographic map of magnetic resonance diffusion metrics in neonatal brains
Bobba PS, Weber CF, Mak A, Mozayan A, Malhotra A, Sheth KN, Taylor SN, Vossough A, Grant PE, Scheinost D, Constable RT, Ment LR, Payabvash S. Age‐related topographic map of magnetic resonance diffusion metrics in neonatal brains. Human Brain Mapping 2022, 43: 4326-4334. PMID: 35599634, PMCID: PMC9435001, DOI: 10.1002/hbm.25956.Peer-Reviewed Original ResearchConceptsGestational ageCerebellar white matterWhite matterNeonatal brainDiffusion-weighted imagingCorpus callosumMD valuesCorpus callosum myelinationLower gestational ageTerm-equivalent ageSubcortical white matterFA/MDApparent diffusion coefficient (ADC) valuesMonths of ageDiffusion tensor imaging (DTI) metricsDiffusion metricsAge-related evolutionAge-related changesAge-specific normative valuesNeonatal ageBrain parenchymaCorticospinal tractNeonate brainDiffusivity metricsADC values
2015
Bilateral persistent fetal vasculature due to a mutation in the Norrie disease protein gene
Payabvash S, Anderson JS, Nascene DR. Bilateral persistent fetal vasculature due to a mutation in the Norrie disease protein gene. The Neuroradiology Journal 2015, 28: 623-627. PMID: 26459204, PMCID: PMC4757132, DOI: 10.1177/1971400915609350.Peer-Reviewed Original ResearchMeSH KeywordsBlindnessEye ProteinsGenetic Diseases, X-LinkedHumansInfantMagnetic Resonance ImagingMaleMutationNerve Tissue ProteinsNervous System DiseasesOptic DiskPersistent Fetal Circulation SyndromeRetinal DegenerationRetinal DiseasesRetinal HemorrhageSpasms, InfantileTomography, X-Ray ComputedVitreous Body
2008
Application of magnetic resonance urography in diagnosis of congenital urogenital anomalies in children
Payabvash S, Kajbafzadeh AM, Saeedi P, Sadeghi Z, Elmi A, Mehdizadeh M. Application of magnetic resonance urography in diagnosis of congenital urogenital anomalies in children. Pediatric Surgery International 2008, 24: 979. PMID: 18668256, DOI: 10.1007/s00383-008-2196-7.Peer-Reviewed Original ResearchConceptsMagnetic resonance urographyRenal nuclide scanCongenital urogenital anomaliesUrogenital anomaliesConventional imaging modalitiesUrinary tractNuclide scanJunction obstructionConventional intravenous urographyVesicoureteral junction obstructionPosterior urethral valvesImaging modalitiesUreteropelvic junction obstructionSoft tissue lesionsReliable noninvasive techniqueUrethral valvesEctopic kidneyIntravenous urographySurgical findingsMean ageFinal diagnosisUseful adjuvantCongenital anomaliesPolycystic kidneysMRU technique
2007
Myocyte Apoptosis in Primary Obstructive Megaureters: The Role of Decreased Vascular and Neural Supply
Payabvash S, Kajbafzadeh AM, Tavangar SM, Monajemzadeh M, Sadeghi Z. Myocyte Apoptosis in Primary Obstructive Megaureters: The Role of Decreased Vascular and Neural Supply. Journal Of Urology 2007, 178: 259-264. PMID: 17499782, DOI: 10.1016/j.juro.2007.03.054.Peer-Reviewed Original ResearchConceptsPrimary obstructive megaureterObstructive megaureterNumber of microvesselsUreteral endingsApoptosis indexVesicoureteral junctionNerve endingsStudy groupMuscular componentNormal controlsMyocyte apoptosisCD31-positive microvesselsCollagen fibersFunctional obstructionNeural supplyUreteral reimplantationPositive microvesselsMicrovessel densityNerve supplyNerve terminalsDefective vascular developmentMegaureterNeural elementsTissue specimensConnective tissueEvolution of Endoscopic Management of Ectopic Ureterocele: A New Approach
Kajbafzadeh A, Salmasi AH, Payabvash S, Arshadi H, Akbari HR, Moosavi S. Evolution of Endoscopic Management of Ectopic Ureterocele: A New Approach. Journal Of Urology 2007, 177: 1118-1123. PMID: 17296426, DOI: 10.1016/j.juro.2006.11.001.Peer-Reviewed Original ResearchConceptsEctopic ureteroceleTotal success rateGroup 2Group 1Ureterocele moietyEndoscopic treatmentVesicoureteral refluxUreterocele incisionUreterocele punctureSingle punctureDouble punctureNew onset vesicoureteral refluxConcomitant vesicoureteral refluxOpen surgical interventionNew endoscopic approachDouble J stentDifferent endoscopic modalitiesSuccess rateTreatment of childrenCommon endoscopic treatmentEndoscopic injectionSingle centerSurgical interventionEndoscopic modalitiesEndoscopic management
2006
Endoscopic Treatment of Vesicovasal and Vesicoureteral Reflux in Infants With Persisting Mesonephric Duct
Kajbafzadeh AM, Payabvash S. Endoscopic Treatment of Vesicovasal and Vesicoureteral Reflux in Infants With Persisting Mesonephric Duct. Journal Of Urology 2006, 176: 2657-2662. PMID: 17085187, DOI: 10.1016/j.juro.2006.08.027.Peer-Reviewed Original ResearchConceptsMesonephric ductEndoscopic treatmentVesicoureteral refluxAnorectal malformationsProximal prostatic urethraFirst-line therapyIpsilateral renal agenesisHigh anorectal malformationInvasive endoscopic approachInitial colostomyRecurrent sepsisMean followupProphylactic antibioticsInfants 2Line therapyUrological evaluationBladder neckGeneral anesthesiaSurgical interventionFurther episodesMale infantPoor feedingRenal agenesisAnorectal anomaliesBlood culturesSmooth Muscle Cell Apoptosis and Defective Neural Development in Congenital Ureteropelvic Junction Obstruction
Kajbafzadeh AM, Payabvash S, Salmasi AH, Monajemzadeh M, Tavangar SM. Smooth Muscle Cell Apoptosis and Defective Neural Development in Congenital Ureteropelvic Junction Obstruction. Journal Of Urology 2006, 176: 718-723. PMID: 16813927, DOI: 10.1016/j.juro.2006.03.041.Peer-Reviewed Original Research