Catalan conjecture/Mihailescu theorem is a theorem in number theory that was conjectured by Mathematician Eugene Charles Catalan in 1844 and was proved completely by Preda Mihailescu in 2005. The note stating the problem was not given the due imprtance at the begining and appeared among errata to papers which had appeared in the earlier volume of Crelle journal. The problem got its due considra...

Spermatogenesis requires the concerted action of thousands of genes, all contributing to its efficiency to a different extent. The Y chromosome contains several testis-specific genes and among them the AZF region genes on the Yq and the TSPY1 array on the Yp are the most relevant candidates for spermatogenic function. TSPY1 was originally described as the putative gene for the gonadoblastoma lo...

1. Real Decreto-Ley 16/2012, de 20 de abril, de medidas urgentes para garantizar la sostenibilidad del Sistema Nacional de Salud y mejorar la calidad y seguridad de sus prestaciones (24 abril 2012). 2. Cohen MS, Chen YQ, McCauley M, et al. Prevention of HIV-1 infection with early antiretroviral therapy. N Engl J Med. 2011;365:493–505. 3. Del Romero J, Castilla J, Hernando V, et al. Combined ant...

Conformational coupling with the inositol 1,4,5-trisphosphate (IP3) receptor has been suggested as a possible mechanism of activation of TRPC3 channels and a region in the C terminus of TRPC3 has been shown to interact with the IP3 receptor as well as calmodulin (calmodulin/IP3 receptor-binding (CIRB) region). Here we show that internal deletion of 20 amino acids corresponding to the highly con...

An ideal image compression technique for image data archival, retrieval and distribution would be one with the asymmetrical computational requirements of Vector Quantization (VQ), but without the complications arising from VQ codebooks. Codebook generation and maintenance are stumbling blocks •which have limited the use of VQ as a practical image compression algorithm. Model-based YQ (MVQ), a v...

Around 10% of males with idiopathic azoospermia or oligozoospermia, which are important causes of male infertility, have partial deletions on the long arm of the Y chromosome. To develop a rapid and accurate detection system for screening major Y deletions found in infertile men, we developed a multiplex PCR system that can simultaneously amplify five loci on the Y chromosome, SRY, AMELY, DBY, ...

atitis: results from the hepatitis surveillance system in Italy. Scand J Infect Dis 1995; 27:441–4. 4. Tumminelli F, Marcellin P, Rizzo S, et al. Shaving as potential source of hepatitis C virus infection. Lancet 1995; 345:658. 5. Sun DX, Zhang FG, Geng YQ, Xi DS. Hepatitis C transmission by cosmetic tattooing in women. Lancet 1996; 347:541. 6. Yee LJ, Weiss HL, Langner RG, Herrera J, Kaslow RA...

Chromosomal defects are relatively frequent in infertile men however, translocations between the Y chromosome and autosomes are rare and less than 40 cases of Y-autosome translocation have been reported. In particular, only three individuals has been described with a Y;21 translocation, up to now. We report on an additional case of an infertile man in whom a Y;21 translocation was associated wi...