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Response of the G2-prophase checkpoint to genotoxic drugs in lymphocytes from healthy individuals
(Society of Biology of Chile, 2012)
We analyzed the in vitro effects of the anti-tumoral drugs doxorubicin, cytosine arabinoside and hydroxyurea on the G2-prophase checkpoint in lymphocytes from healthy individuals. At biologically equivalent concentrations, ...
Chromosomal data of two pholcids (Araneae, Haplogynae): A new diploid number and the first cytogenetical record for the New World Clade
(Amer Arachnological Soc, 2005-01-01)
Mesobolivar luteus (Keyserling 1891) and Micropholcus fauroli (Simon 1887) specimens were collected in Ubatuba and Rio Claro, both in the state of São Paulo, Brazil. Mesabolivar luteus showed 2n (male) = 15 = 14 + X and ...
Spermatogenesis and nucleolar activity in Triatoma klugi (Triatomine, Heteroptera)
(2008-01-01)
Triatoma klugi is a Chagas disease vector in the Rio Grande do Sul State. Triatominae chromosomes are holocentric and sex chromosomes segregation is post-reductional. In this paper we describe the karyotype of male T. klugl ...
Cytogenetics of three breeds of river buffalo (Bubalus bubalis L.), with evidence of a fragile site on the X chromosome
(Elsevier B.V., 1998-02-01)
The cytogenetic study of 182 river buffalo (Bubalus bubalis L., 2n=50) of Murrah, Mediterranean and Jaffarabadi breeds, from the State of São Paulo, was carried out to characterize their chromosomes and to detect possible ...
Effects of gonadotropin-exposed medium with high concentrations of progesterone and estradiol-17 beta on in vitro maturation of canine oocytes
(SPRINGER, 2009)
During the process of maturation in the oviduct, canine oocytes in the germinal vesicle stage are exposed to decreasing levels of estradiol-17 beta and increasing levels of progesterone. However, hormone concentrations in ...
Improvements in cytological preparations for fluorescent in situ hybridization in Passiflora
(Fundacao de Pesquisas Científicas de Riberao Preto, 2010-11)
Cytological preparations for the fluorescent in situ hybridization (FISH) technique require cytoplasm-free metaphases, with well-spread chromosomes, for the localization of DNA sequences and chromosome mapping. We tested ...
Effects of gonadotropin-exposed medium with high concentrations of progesterone and estradiol-17b on in vitro maturation of canine oocytes
(Berlin, 2009)
During the process of maturation in the oviduct, canine oocytes in the germinal vesicle stage are exposed to decreasing levels of estradiol-17b and increasing levels of progesterone. However, hormone concentrations in the ...
Drifter technique: a new method to obtain metaphases in Hep-2 cell line cultures
(Instituto de Tecnologia do Paraná - Tecpar, 2005-07-01)
The Hep-2 cell line is derived from laryngeal carcinoma cells and is often utilized as a model in carcinogenesis and mutagenesis tests. To evaluate the proliferative potential of this line, we developed a cytogenetic ...
Subtelomeric region of chromosome 2 in patients with autism spectrum disorders
(2008-07-30)
Autism spectrum disorders are severe psychiatric diseases commonly identified in the population. They are diagnosed during childhood and the etiology has been much debated due to their variations and complexity. Onset is ...
Locus no cromossomo 19 influencia positivamente o número de oócitos recuperados em ciclos estimulados
(2011-05-01)
Objective: To evaluate if identified loci associated with normal age of menopause variation and early menopause can account for the poor response to controlled ovarian stimulation. Methods: A total of 71 patients, with age ...