Structural and numerical chromosomal abnormalities are common in early developing embryos, and these abnormalities may cause spontaneous abortions and implantation failure. The reproductive risk of carriers with structural chromosomal abnormalities depends on the breakpoint positions, the segregation patterns and the sex of the carrier. These carriers have a lower chance of producing normal or ...

Prenatal exposure to alcohol (ethanol) results in a continuum of physical and neurological developmental abnormalities that vary depending on the timing, duration, and degree of alcohol exposure. Heavy exposure during development may lead to the condition Fetal Alcohol Syndrome [6] (FAS), characterized by growth deficits, neurological deficiencies and minor facial abnormalities. Alcohol is a kn...

Prenatal exposure to alcohol (ethanol) results in a continuum of physical and neurological developmental abnormalities that vary depending on the timing, duration, and degree of alcohol exposure. Heavy exposure during development may lead to the condition Fetal Alcohol Syndrome [6] (FAS), characterized by growth deficits, neurological deficiencies and minor facial abnormalities. Alcohol is a kn...

BACKGROUND Pronuclear (PN) zygote morphology has been proposed as a useful tool for selecting the best embryos for transfer. METHODS PN morphology was recorded in 888 zygotes and classified according to similar/different PN size [groups A (n = 816) and B (n = 72)] and to the number, distribution and synchrony of nucleolar precursor bodies (NPB): subgroup I, pronuclei with 3-4 polarized NPB; s...

Prenatal exposure to alcohol (ethanol) results in a continuum of physical and neurological developmental abnormalities that vary depending on the timing, duration, and degree of alcohol exposure. Heavy exposure during development may lead to the condition Fetal Alcohol Syndrome [6] (FAS), characterized by growth deficits, neurological deficiencies and minor facial abnormalities. Alcohol is a kn...

to report the oral findings, including dental anomalies, ectopic eruption of the maxillary permanent first molars and periodontal disease and soft tissue alterations, in a subject with apert syndrome. clinical and radiographic examination of a patient with apert syndrome, aged 21 years old, not previously submitted for orthodontic or orthognathic treatment. dental anomalies were present in a pa...

orofacial clefts, including cleft lip with or without cleft palate (cl (p)), are common congenital malformations, second only to clubfoot in frequency of occurrence. the epidemiology and genetics of this disorder have been studied extensively in various countries by several investigators. the objective of this study is to assess the epidemiology and some genetic aspects of orofacial clefting at...

W H E N Guyer & Smith (1918, 1924) subjected pregnant rabbits to active and passive immunization with lens proteins, it was noted that a high percentage of the new-born showed lens anomalies and other ocular changes such as microphthalmia and coloboma of the iris. Though these experiments seem to indicate that antibodies circulating in the maternal circulation may interfere with embryonic devel...

There is a high incidence of chromosome abnormalities in human embryos that leads to failed IVF cycle. Different studies have shown maternal age the determining factor appearance chromosomal alterations embryo. However, possible influence ovarian stimulation on oocyte and embryo aneuploidies mosaicism controversial. A retrospective study was carried out which 835 from 280 couples undergoing rep...

background: it has been demonstrated that performing a mock embryo transfer (et) significantly improves the pregnancy rate in ivf cycles. the mock et could be performed prior to the stimulation cycle or immediately before real et. the problem of the first procedure is the possibility of variation in the uterine position and or cervico�uterine angle. objective: the purpose of this study was to d...