PMID- 14704480 OWN - NLM STAT- MEDLINE DCOM- 20040610 LR - 20151119 IS - 1230-6002 (Print) IS - 1230-6002 (Linking) VI - 55 IP - 5 DP - 2003 Sep-Oct TI - MSRV pol sequence copy number as a potential marker of multiple sclerosis. PG - 869-75 AB - Multiple sclerosis (MS) is a neurological disease in which demyelination in the brain and spinal cord is observed. The causal influence of bacterial/viral infections and genetic/immune factors in the etiology of multiple sclerosis is suggested. Multiple sclerosis-related retrovirus (MSRV) is one of the potential agents, which can lead to development of the disease. The aim of cytogenetic studies was assessment of MSRV pol sequence copy number in patients with MS compared to normal individuals. Cytogenetic slides with interphase nuclei and extended chromatin fibers were prepared from peripheral blood of 16 patients with MS and 10 healthy individuals. Fluorescence in situ hybridization (FISH) with biotinylated product of polymerase chain reaction was used in order to analyze MSRV pol sequence copy number in the examined material. Detection of MSRV pol probe was carried out by immunological reaction with avidin-fluorescein and biotinylated anti-avidin. MSRV pol sequence copy number was significantly greater in MS patients than in normal individuals. Using FISH technique to extended chromatin fibers, it was observed that MSRV pol exists as tandem repeats on various chromosomes. The increased number of MSRV pol sequence has been found on chromatin fibers of MS patients as compared to healthy controls. FAU - Zawada, Mariola AU - Zawada M AD - Institute of Human Genetics, Polish Academy of Sciences, Strzeszynska 32, PL 60-479 Poznan, Poland. FAU - Liwien, Izabela AU - Liwien I FAU - Pernak, Monika AU - Pernak M FAU - Januszkiewicz-Lewandowska, Danuta AU - Januszkiewicz-Lewandowska D FAU - Nowicka-Kujawska, Karina AU - Nowicka-Kujawska K FAU - Rembowska, Jolanta AU - Rembowska J FAU - Lewandowski, Krzysztof AU - Lewandowski K FAU - Hertmanowska, Hanna AU - Hertmanowska H FAU - Wender, Mieczyslaw AU - Wender M FAU - Nowak, Jerzy AU - Nowak J LA - eng PT - Journal Article PL - Poland TA - Pol J Pharmacol JT - Polish journal of pharmacology JID - 9313882 RN - 0 (Biomarkers) RN - 0 (Chromatin) SB - IM MH - Adult MH - *Biomarkers MH - Cell Nucleus/genetics/ultrastructure MH - Chromatin/genetics/ultrastructure MH - Endogenous Retroviruses/genetics/isolation & purification/pathogenicity MH - Gene Dosage MH - Genes, pol/*genetics MH - Humans MH - In Situ Hybridization, Fluorescence MH - Interphase MH - Middle Aged MH - Multiple Sclerosis/*genetics/*physiopathology/virology MH - Polymerase Chain Reaction MH - Retroviridae/genetics MH - Reverse Transcriptase Polymerase Chain Reaction EDAT- 2004/01/06 05:00 MHDA- 2004/06/21 10:00 CRDT- 2004/01/06 05:00 PHST- 2003/09/29 00:00 [received] PHST- 2003/10/27 00:00 [revised] PHST- 2004/01/06 05:00 [pubmed] PHST- 2004/06/21 10:00 [medline] PHST- 2004/01/06 05:00 [entrez] PST - ppublish SO - Pol J Pharmacol. 2003 Sep-Oct;55(5):869-75.