References of "Tamma, Nico"
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See detailA splice-acceptor site variant in the bovine PIGH gene causes glycosylphosphatidyl inositol deficiency and lethal arthrogryposis syndrome.
Sartelet, Arnaud ULg; Li, Wanbo; Pailhoux Eric et al

in Bayrou, Calixte; Cabaraux, Jean-François; Delguste, Catherine (Eds.) et al Proccedings of the 3rd Scientific Meetingof the Faculty of Veterinary Medecine (2013, October 11)

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See detailRilouke, une cellule de surveillance des défauts génétiques dans la race blanc bleu belge
Sartelet, Arnaud ULg; Tamma, Nico ULg; Chapon, Samuel et al

in Point Vétérinaire (2013), 339

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See detailA missense mutation in the ClC-7 chloride channel causes hamartomas with osteopetrosis in cattle.
Sartelet, Arnaud ULg; Stauber, Tobias; Druet, Tom ULg et al

Conference (2012, June 05)

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See detailA splice site variant in the bovine RNF11 gene compromises growth and regulation of the inflammatory response.
Sartelet, Arnaud ULg; Druet, Tom ULg; Michaux, Charles ULg et al

in PLoS Genetics (2012), 15(3), 1002581

We herein report association mapping of a locus on bovine chromosome 3 that underlies a Mendelian form of stunted growth in Belgian Blue Cattle. By resequencing positional candidates, we identify the ... [more ▼]

We herein report association mapping of a locus on bovine chromosome 3 that underlies a Mendelian form of stunted growth in Belgian Blue Cattle. By resequencing positional candidates, we identify the causative c124-2A>G splice variant in intron 1 of the RNF11 gene, for which all affected animals are homozygous. We make the remarkable observation that 26% of healthy Belgian Blue animals carry the corresponding variant. We demonstrate in a prospective study design that approximately one third of homozygous mutants die prematurely with major inflammatory lesions, hence explaining the rarity of growth-stunted animals despite the high frequency of carriers. We provide preliminary evidence that heterozygous advantage for an as of yet unidentified phenotype may have caused a selective sweep accounting for the high frequency of the RNF11 c124-2A>G mutation in Belgian Blue Cattle. [less ▲]

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See detailBalancing selection of a frame-shift mutation in the MRC2 gene accounts for the outbreak of the Crooked Tail Syndrome in Belgian Blue Cattle.
Fasquelle, Corinne ULg; Sartelet, Arnaud ULg; Li, Wanbo et al

in PLoS Genetics (2009), 5(9), 1000666

We herein describe the positional identification of a 2-bp deletion in the open reading frame of the MRC2 receptor causing the recessive Crooked Tail Syndrome in cattle. The resulting frame-shift reveals ... [more ▼]

We herein describe the positional identification of a 2-bp deletion in the open reading frame of the MRC2 receptor causing the recessive Crooked Tail Syndrome in cattle. The resulting frame-shift reveals a premature stop codon that causes nonsense-mediated decay of the mutant messenger RNA, and the virtual absence of functional Endo180 protein in affected animals. Cases exhibit skeletal anomalies thought to result from impaired extracellular matrix remodeling during ossification, and as of yet unexplained muscular symptoms. We demonstrate that carrier status is very significantly associated with desired characteristics in the general population, including enhanced muscular development, and that the resulting heterozygote advantage caused a selective sweep which explains the unexpectedly high frequency (25%) of carriers in the Belgian Blue Cattle Breed. [less ▲]

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See detailMapping QTL influencing gastrointestinal nematode burden in Dutch Holstein-Friesian dairy cattle.
Coppieters, Wouter ULg; Mes, Ted H M; Druet, Tom ULg et al

in BMC Genomics (2009), 10

BACKGROUND: Parasitic gastroenteritis caused by nematodes is only second to mastitis in terms of health costs to dairy farmers in developed countries. Sustainable control strategies complementing ... [more ▼]

BACKGROUND: Parasitic gastroenteritis caused by nematodes is only second to mastitis in terms of health costs to dairy farmers in developed countries. Sustainable control strategies complementing anthelmintics are desired, including selective breeding for enhanced resistance. RESULTS AND CONCLUSION: To quantify and characterize the genetic contribution to variation in resistance to gastro-intestinal parasites, we measured the heritability of faecal egg and larval counts in the Dutch Holstein-Friesian dairy cattle population. The heritability of faecal egg counts ranged from 7 to 21% and was generally higher than for larval counts. We performed a whole genome scan in 12 paternal half-daughter groups for a total of 768 cows, corresponding to the approximately 10% most and least infected daughters within each family (selective genotyping). Two genome-wide significant QTL were identified in an across-family analysis, respectively on chromosomes 9 and 19, coinciding with previous findings in orthologous chromosomal regions in sheep. We identified six more suggestive QTL by within-family analysis. An additional 73 informative SNPs were genotyped on chromosome 19 and the ensuing high density map used in a variance component approach to simultaneously exploit linkage and linkage disequilibrium in an initial inconclusive attempt to refine the QTL map position. [less ▲]

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See detailHighly effective SNP-based association mapping and management of recessive defects in livestock.
Charlier, Carole ULg; Coppieters, Wouter ULg; Rollin, Frédéric ULg et al

in Nature Genetics (2008), 40(4), 449-54

The widespread use of elite sires by means of artificial insemination in livestock breeding leads to the frequent emergence of recessive genetic defects, which cause significant economic and animal ... [more ▼]

The widespread use of elite sires by means of artificial insemination in livestock breeding leads to the frequent emergence of recessive genetic defects, which cause significant economic and animal welfare concerns. Here we show that the availability of genome-wide, high-density SNP panels, combined with the typical structure of livestock populations, markedly accelerates the positional identification of genes and mutations that cause inherited defects. We report the fine-scale mapping of five recessive disorders in cattle and the molecular basis for three of these: congenital muscular dystony (CMD) types 1 and 2 in Belgian Blue cattle and ichthyosis fetalis in Italian Chianina cattle. Identification of these causative mutations has an immediate translation into breeding practice, allowing marker assisted selection against the defects through avoidance of at-risk matings. [less ▲]

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