Authors: Vozzi PA, Marcondes CR, Bezerra LAF and Lobo RB
Parameters based on the probability of gene origin were used to describe genetic variability in three reproductive groups from the Breeding Program for Nellore Cattle (PMGRN). The three reproductive populations (cows in reproductive age, bulls from artificial insemination centers and young bulls in progeny test) generated medi.. Read More»
Authors: Y.Y. Fan G.W. Fu C.Z. Fu L.S. Zan W.Q. Tian
The peroxisome proliferator-activated receptor gamma (PPAR-Ã?³) is a key molecule in adipocyte differentitation; it transactivates multiple target genes in lipid metabolic pathways. Using PCR-SSCP and DNA sequencing, we evaluated a potential association of an SNP (72472 Gï¹¥T in exon7) of the bovine PPAR-Ã?³gene with carcass and meat quality traits in 6.. Read More»
Authors: G.-L. Wang, X.-L. Xia, X.-L. Li, S.-J. Dong and J.-L. Li
Antimicrobial peptides (AMPs), of which big defensins are examples, are an important component of the natural defenses of most living organisms, and possess remarkable microbicidal activities. In the present study, using expressed-sequence tag sequences from a cDNA library and RACE, the full-length cDNA sequence of the big def.. Read More»
Authors: M.R.S. Briones F. Bosco
Gene expression “noise” is commonly defined as the stochastic variation of gene expression levels in different cells of the same population under identical growth conditions. Here, we tested whether this “noise” is amplified with time, as a consequence of decoherence in global gene expression profiles (.. Read More»
Authors: C.B. Dallagassa, L.F. Huergo, M.I. Stets, F.O. Pedrosa, E.M. Souza, L.M. Cruz, F.E.A. Assis, S. Wolf, W. Volanski, G. Picheth, C.P. Pigatto-Denardi, S.M.S.S. Farah and C.M.T. Fadel-Picheth
The mass profiles of cell-free extracts of 180 commensal and pathogenic strains of Escherichia coli were determined by MALDI-TOF mass spectrometry (MS). While some peaks were highly conserved in all E. coli, several peaks occurred only in some strains, showing heterogeneity among them. We did not detect strain-specific peaks f.. Read More»
Authors: A.P. Batistini, M.P.C. TellesB.W. BertoniJ. da S. Coppede F.V. M�´ro, S. de C. Fran�§a, A.M.S. Pereira
Catuaba (Anemopaegma arvense), a Bignoniaceae species endemic to Cerrado regions, shows anticancer properties and is widely used as a stimulant in traditional medicine. We evaluated the genetic diversity of seven populations found in the State of São Paulo, using random amplified polymorphic DNA markers. After optimizat.. Read More»
Authors: I.A. Giantsis N. Kravva A.P. Apostolidis
Despite the great commercial and economic importance of mussels, Mytilus galloprovincialis (Bivalvia, Mollusca) in Greece, little information is available concerning their population genetic structure. We used RAPD markers to examine genetic differentiation and potential impact of aquaculture practices and other anthropogenic activities on the genetic str.. Read More»
Authors: Y. Zhi3*, Z. Cao2*, Q.H. Li1, X.L. Li1, Y. Sun1, T. Zhang1 and Q. Zhang1
Previous studies have used microarray technology to explore gene expression differences between the atrium and the ventricle. However, selection criteria for the differentially expressed genes (DEGs) based only on either the fold change or the P value in these studies. Here, we aim to further identify the DEGs by setting a P value threshold of 2, which ma.. Read More»
Authors: J.H. Amorim, T.N.S. Macena, G.V. Lacerda-Junior, R.P. Rezende, J.C.T. Dias, M. Brendel and J.C.M. Cascardo
The need for the prospecting for and identification of new biomolecules is a reality. Molecular techniques allow access to the metabolic potential of microorganisms via the isolation of DNA from environmental samples, i.e., without the application of microbial culture techniques. With its great biological diversity, the Atlantic Rainforest biome has a soi.. Read More»
Authors: C.A. Pacheco, K.C.C. Alevi, T.L. Silva, M.T.V. Azeredo-Oliveira, C.R. Ceron and M.K.H. Kobayashi
It has been reported in the literature that the Malpighian tubules of Neuroptera in the third instar undergo drastic histological changes, when they stop functioning in osmoregulation and start to secrete silk fibers for a cocoon. Therefore, to increase our knowledge about these cellular alterations that occur in the larvae of.. Read More»