Tetraploidy in a liveborn infant.

Tetraploidy in a 26-month-old girl (cytogenetic and molecular studies).

Liveborn infants with tetraploidy are very rare in human pregnancies and usually die during the first days or months. Seven cases of liveborn infants with tetraploidy have previously been reported. Among them only two 92, XXXX infants survived for longer than 12 months. Here we report on the case of a 26-month-old girl with tetraploidy. The main clinical features of tetraploidy are facial dysmo...

[Neural tube defects and associated factors in liveborn and stillborn infants].

OBJECTIVES To evaluate the prevalence and factors associated to neural tube defects in liveborn and stillborn infants delivered at the Hospital das Clínicas, UFMG, from January 8, 1999 to July 31, 2000. METHODS This is a descriptive study, based on a database, according to the Latin-American Collaborative Study of Congenital Malformation (ECLAMC) rules. Reports on liveborn and stillborn infan...

Induction of tetraploidy in transgenic tilapia (Oreochromis niloticus) using physical shocks

The induction of tetraploidy by means of cold, heat and multiple heat shock treatments was investigated on male fish from a growth-enhanced transgenic tilapia C118 line, crossed with wild type females. After the development a new multiple heat shock protocol (two heat treatments at 41oC in 60 and 80 min. after fertilization for 5 min. per each), chromosome and X-gal in situ staining assays demo...

Retrospective analysis of 17 liveborn neonates with hydrops fetalis.

BACKGROUND Hydrops fetalis (HF) is a condition with a high mortality rate. The cause may be due to a variety of underlying diseases. In the majority of cases, death occurs antepartum and intrapartum. For those that are born alive, it is difficult to survive. The purpose of this study was to analyze the clinical manifestations, etiologies and outcomes of liveborn babies with hydrops fetalis. M...

Cyclopia and sirenomelia in a liveborn infant.