Retrospective study of Mycoplasma gallisepticum meningoencephalitis in six turkey flocks in western France. 2013

B Wyrzykowski, and O Albaric, and S Moreau, and F Nguyen, and R Fleurance, and S Belluco, and M Wyers, and M-A Colle
Nantes Angers Le Mans University , Oniris, Department of Veterinary Pathology, Nantes, France.

Mycoplasma gallisepticum (MG) meningoencephalitis was diagnosed in six turkey flocks, from 1998 to 2005, in the western part of France. Affected birds were 8-11 weeks old and all displayed neurological signs, especially torticollis, with more than half having concomitant respiratory signs. Microscopical examination of brain samples from birds in all six flocks revealed similar lesions of acute to subacute multifocal parenchymal necrosis, perivascular cuffing, leptomeningitis and vasculitis. Birds from four of the six affected flocks were seropositive for MG and in birds from four flocks MG DNA was detected by polymerase chain reaction performed on tracheal swabs or on samples of formalin-fixed and paraffin wax-embedded brain. To our knowledge, this is the first pathological description of naturally occurring cases of turkey MG meningoencephalitis in Europe.

UI MeSH Term Description Entries
D008590 Meningoencephalitis An inflammatory process involving the brain (ENCEPHALITIS) and meninges (MENINGITIS), most often produced by pathogenic organisms which invade the central nervous system, and occasionally by toxins, autoimmune disorders, and other conditions. Cerebromeningitis,Encephalomeningitis,Cerebromeningitides,Encephalomeningitides,Meningoencephalitides
D009175 Mycoplasma Infections Infections with species of the genus MYCOPLASMA. Eperythrozoonosis,Infections, Mycoplasma,Eperythrozoonoses,Infection, Mycoplasma,Mycoplasma Infection
D009336 Necrosis The death of cells in an organ or tissue due to disease, injury or failure of the blood supply.
D011201 Poultry Diseases Diseases of birds which are raised as a source of meat or eggs for human consumption and are usually found in barnyards, hatcheries, etc. The concept is differentiated from BIRD DISEASES which is for diseases of birds not considered poultry and usually found in zoos, parks, and the wild. Disease, Poultry,Diseases, Poultry,Poultry Disease
D001921 Brain The part of CENTRAL NERVOUS SYSTEM that is contained within the skull (CRANIUM). Arising from the NEURAL TUBE, the embryonic brain is comprised of three major parts including PROSENCEPHALON (the forebrain); MESENCEPHALON (the midbrain); and RHOMBENCEPHALON (the hindbrain). The developed brain consists of CEREBRUM; CEREBELLUM; and other structures in the BRAIN STEM. Encephalon
D004269 DNA, Bacterial Deoxyribonucleic acid that makes up the genetic material of bacteria. Bacterial DNA
D005602 France A country in western Europe bordered by the Atlantic Ocean, the English Channel, the Mediterranean Sea, and the countries of Belgium, Germany, Italy, Spain, Switzerland, the principalities of Andorra and Monaco, and by the duchy of Luxembourg. Its capital is Paris. Corsica,Saint Pierre and Miquelon,Miquelon and Saint Pierre,Miquelon and St. Pierre,St. Pierre and Miquelon
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D012189 Retrospective Studies Studies used to test etiologic hypotheses in which inferences about an exposure to putative causal factors are derived from data relating to characteristics of persons under study or to events or experiences in their past. The essential feature is that some of the persons under study have the disease or outcome of interest and their characteristics are compared with those of unaffected persons. Retrospective Study,Studies, Retrospective,Study, Retrospective
D014422 Turkeys Large woodland game BIRDS in the subfamily Meleagridinae, family Phasianidae, order GALLIFORMES. Formerly they were considered a distinct family, Melegrididae. Meleagridinae,Meleagrididae

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