Results: 52

Prevalence of karyotype alterations in couples with recurrent pregnancy loss in a tertiary center in Brazil

Abstract Objective To assess the prevalence and type of chromosomal abnormalities in Brazilian couples with recurrent pregnancy loss (RPL) and compare the clinical characteristics of couples with and without chromosome abnormalities. Methods We assessed the medical records of 127 couples with a histo...

Variations in heterochromatin content reveal important polymorphisms for studies of genetic improvement in garlic (Allium sativum L. )

Braz. j. biol; 83 (), 2023
Abstract Allium sativum L. is an herb of the Alliaceae family with a specific taste and aroma and medicinal and nutraceutical properties that are widely marketed in several countries. Brazil is one of the largest importers of garlic in the world, despite of its production is restricted and limited to int...

First constitutive heterochromatin characterization and Karyotype of white stork Ciconia ciconia (Aves: Ciconiidae)

Braz. j. biol; 83 (), 2023
Abstract The karyotype and constitutive heterochromatin pattern of the white stork Ciconia ciconia samples obtained from Manzala lake, Dimiaat, Egypt was described. Somatic cells of Ciconia ciconia samples have diploid number 2n= 68 chromosomes. Out of 68 chromosomes, 11 pairs including sex chromosomes w...

Cytokey: desenvolvimento de uma chave de identificação com dados citogenéticos para os vetores da doença de Chagas do estado da Paraíba, Brasil

Os triatomíneos são insetos hematófagos vetores do protozoário Trypanosoma cruzi, agente etiológico da doença de Chagas (DC). Embora existam diferentes formas de transmissão do parasito, a Organização Mundial de Saúde ressalta que a vetorial seja a principal via de transmissão do T. cruzi na A...

Comparison of Cavum Septum Pellucidum Size in Euploid and Aneuploid Fetuses

Abstract Objective The aim of the present study is to compare the cavum septum pellucidi (CSP) z-score in euploid and aneuploid fetuses and to investigate the performance of the CSP width/length and CSP width/biparietal diameter (BPD) ratios as a diagnostic marker in aneuploidy. Methods A total of 54 p...

49,XXXXY: investigação da idade no diagnóstico, apresentação clínica e tratamento: uma revisão narrativa da literatura

Diagn. tratamento; 27 (4), 2022
O cariótipo 49,XXXXY, uma variante rara da Síndrome de Klinefelter, acomete 1:85.000–100.000 nascidos vivos do sexo masculino e surge a partir de uma dupla não disjunção durante as duas rodadas da meiose (I e II) materna. No entanto, as pesquisas envolvendo indivíduos com essa constituição crom...

Leydig and Sertoli cell function in individuals with genital ambiguity, 46,XY karyotype, palpable gonads and normal testosterone secretion: a case-control study

Säo Paulo med. j; 140 (2), 2022
Abstract BACKGROUND: Because normal male sexual differentiation is more complex than normal female sexual differentiation, there are more cases of disorders of sex development (DSDs) with 46,XY karyotype that have unclear etiology. However, Leydig and Sertoli cell markers are rarely used in distinguishi...

Population structuration and chromosomal features homogeneity in Parodon nasus (Characiformes: Parodontidae): A comparison between Lower and Upper Paraná River representatives

Neotrop. ichthyol; 20 (1), 2022
The ichthyofauna of the La Plata hydrographic basin is divided into Upper and Lower Paraná River systems due to the geographic isolation of the Sete Quedas waterfalls, currently flooded by the lake of the Itaipu dam. In Parodontidae, pairs of species, or groups of cryptic species were described between ...

Caracterización clínica y citogenética de una cohorte de pacientes con leucemia promielocítica aguda atendidos en un Hospital Universitario en Medellín, Colombia

Med. lab; 26 (3), 2022
Introducción. La leucemia promielocítica aguda (LPA) es un subtipo poco frecuente de leucemia mieloide aguda (LMA), que se caracteriza por un comportamiento clínico particularmente agresivo, y en ausencia de tratamiento, su curso generalmente es fatal. El objetivo de este trabajo fue determinar las ca...