Research Article

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DLK1; Gene expression; Hu sheep; IGF-I; Muscle trait

The aim of the present study was to detect delta-like 1 ho­molog (DLK1) and insulin-like growth factor-I (IGF-I) gene expression in the longissimus dorsi of Hu sheep at different growth stages and study the association between these genes and meat quality. The diameter and density of muscle fibers and tenderness of the longissimus dorsi were measured. Growth stage, but ... more

R. Su; W. Sun; D. Li; Q.Z. Wang; X.Y. Lv; H.H. Musa; L. Chen; Y.F. Zhang; W.Z. Wu
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Carcass trait; Gene expression; Hu sheep; IGF-I; MyoG

In the present study, real time-polymerase chain reaction was applied to analyze the expression of IGF-I and MyoG genes in Hu sheep longissimus dorsi at different growth stages and their association with meat traits. Expression of the IGF-I gene in Hu sheep differed significantly between males and females at the two day-old (0.01 < P < 0.05), one-month old (0.01 < P < 0.05), ... more

W. Sun; R. Su; D. Li; H.H. Musa; Y. Kong; J.T. Ding; Y.H. Ma; L. Chen; Y.F. Zhang; W.Z. Wu
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Brazil; Glutathione S-transferase; Polymorphism

The glutathione S-transferase (GST) family of enzymes has a vital role in phase II of biotransformation of environmental carcinogens, pollutants, drugs and other xenobiotics. GSTs are polymorphic, with the type and frequency of polymorphism being ethnic dependent. Polymorphisms in GST genes have been shown to be associated with susceptibility to disease and disease outcome. We ... more

A. Rossini; D.C.M. Rapozo; L.M.F. Amorim; J.M.B. Macedo; R. Medina; J.F.N. Neto; C.V.M. Gallo; L.F.R. Pinto
03/28/2007
Dog breeds; Growth; Polymorphism; SNP; SOCS2

Suppressor of cytokine signaling 2 (SOCS2) is a negative regulator of growth hormone signaling. The deletion of SOCS2 in mice results in a 30-50% increase in post-natal growth. In an effort to identify polymorphisms in the SOCS2 gene that may be associated with body size in dogs, we characterized the canine SOCS2 gene and analyzed its genetic diversity among small and large dog breeds ... more

G. Rincón; A.E. Young; D.L. Bannasch; J.F. Medrano
03/14/2006
Alu; CEPH panel; Human population genetics; Polymorphism; X chromosome

We describe a novel polymorphic Alu insertion (DXS225) on the human X chromosome (Xq21.3) embedded into an L1 retrotransposon. The DXS225 polymorphism was genotyped in 684 males from the CEPH Human Genome Diversity Panel. This insertion was found in all regions of the globe, suggesting that it took place before modern humans spread from Africa ca. 100,000 ... more

R.Wellerson Pereira; S.Silva dos Santos; S.Danilo Jun Pena
01/05/2009
meningiomas; metastases; Methylation; Polymorphism; schwannomas; TP53

The p53 tumor suppressor gene is the most frequently mutated gene in human cancer; this gene is mutated in up to 50% of human tumors. It has a critical role in the cell cycle, apoptosis and cell senescence, and it participates in many crucial physiological and pathological processes. Polymorphisms of p53 have been suggested to be associated with genetically determined susceptibility in various ... more

L.O. Almeida; A.C. Custódio; G.R. Pinto; M.J. Santos; J.R.W. Almeida; C.A. Clara; J.A. Rey; C. Casartelli
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Bombyx mori multiple nucleopolyhedrovirus; Molecular markers; Polymorphism; Random amplified polymorphic DNA; Silkworm

The silkworm Bombyx mori L. is particularly susceptible to virus diseases, especially B. mori nucleopolyhedrovirus (BmNPV). Disease resistance, along with high productivity, are important selection criteria for developing commercial hybrids of B. mori. We used bioassays and molecular markers linked to susceptibility/resistance to baculovirus infection to analyze the ... more

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01/13/2009
Polymorphism; Random amplified polymorphic DNA markers; Table grapes; Vitis vinifera

Random amplified polymorphic DNA (RAPD) markers were used to detect polymorphism and to examine relationships among four table grape clones from northwestern Paraná, in southern Brazil. The 10 primers used for RAPD fingerprints generated 126 reproducible fragments, of which 63, 68, 76, and 72 were polymorphic in cultivars Italia, Rubi, Benitaka, and Brasil, respectively. Among the primers, OPP ... more

S.H.Z. Maia; C.A. Mangolin; S.A.O. Collet; M.F.P.S. Machado
02/25/2009
Mitochondrial DNA; Polymorphism; Sea turtles; Single strand conformation polymorphism

Marine turtles are increasingly being threatened worldwide by anthropogenic activities. Better understanding of their life cycle, behavior and population structure is imperative for the design of adequate conservation strategies. The mtDNA control region is a fast-evolving matrilineal marker that has been employed in the study of marine turtle populations. We developed and tested a simple ... more

E.C. Reis; R.M. Albano; A.C.V. Bondioli; L.S. Soares; G. Lôbo-Hajdu; G. Lôbo-Hajdu
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C1236T; MDR1; Polymorphism; Turkish population

Human P-glycoprotein (P-gp) is encoded by the MDR1 gene, which is located on chromosomal region 7q21 and consists of 28 exons. To date, over 50 single nucleotide polymorphisms (SNPs) have been reported for the MDR1 gene. The effect of these polymorphisms on P-gp function or their clinical impact is in most cases unknown, but some of the SNPs are known to be of functional ... more

G. Gümüş-Akay; A.R. üstemoğlu; A. Karadağ; A. Sunguroĝlu; A. Sunguroĝlu

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