First isolation of Mycobacterium microti (Llama-type) from a dog     

Deforges L  Boulouis HJ  Thibaud JL  Boulouha L  Sougakoff W  Blot S  Hewinson G  Truffot-Pernot C  Haddad N 《Veterinary microbiology》2004,103(3-4):249-253

We report the first isolation of Mycobacterium microti from a dog with lesions of acute peritonitis. The isolate was demonstrated to be M. microti of Llama-Type by spoligotyping. Epidemiological implications of the isolation of this possibly zoonotic agent from a dog are discussed.  相似文献   

Effects of seropositivity for bovine leukemia virus, bovine viral diarrhoea virus, Mycobacterium avium subspecies paratuberculosis, and Neospora caninum on culling in dairy cattle in four Canadian provinces     

Tiwari A  VanLeeuwen JA  Dohoo IR  Stryhn H  Keefe GP  Haddad JP 《Veterinary microbiology》2005,109(3-4):147-158

The purpose of this research was to determine the effects of seropositivity for exposure to bovine leukemia virus (BLV), bovine viral diarrhoea virus (BVDV), Mycobacterium avium subspecies paratuberculosis (MAP) and Neospora caninum (NC) on overall and reason-specific culling in Canadian dairy cattle. Serum samples from, approximately, 30 randomly selected cows from 134 herds were tested for antibodies against BLV, MAP and NC using commercially available ELISA test kits, while 5 unvaccinated cattle over 6 months of age were tested for antibodies to bovine viral diarrhoea virus (BVDV). For analyzing the time (in days) to culling of cows after the blood testing, a two-step approach was utilized, non-parametric (Kaplan-Meier survival graphs) visualization and then semi-parametric survival modelling (Cox proportional hazards model), while controlling for confounding variables and adjusting for within herd clustering. For all reasons of culling, MAP-seropositive cows had a 1.38 (1.05-1.81, 95% C.I.) times increased hazard of culling compared to MAP-seronegative cows. Seropositivity for the other pathogens was not associated with an increased risk of overall culling. Among cows that were culled because of either decreased reproductive efficiency or decreased milk production or mastitis, MAP-seropositive cows were associated with 1.55 (1.12-2.15, 95% C.I.) times increased hazard compared to MAP-seronegative cows. Among cows that were culled because of reproductive inefficiency, NC-seropositive cows had a 1.43 (1.15-1.79, 95% C.I.) times greater hazard than NC-seronegative cows. Among cows that were culled because of decreased milk production, cows in BVDV-seropositive herds had a 1.86 (1.28-2.70, 95% C.I.) times increased hazard compared to cows in BVDV-seronegative herds. BLV-seropositive cows did not have an increased risk of reason-specific culling as compared to BLV-seronegative cows. No significant interaction on culling among seropositivity for the pathogens was detected, but only a limited number of cows tested seropositive for multiple pathogens. Results from our research will help in better understanding the economic impacts of these pathogens and justification for their control.  相似文献   

Effect of several Rhizobium strains on nodulation,nitrogen uptake and yield of chickpeas (Cicer arietinum L.)     

A. Tellawi  N. Haddad  B. Hattar 《植物养料与土壤学杂志》1986,149(3):314-322

The effect of soil sterilization, and seed inoculation with three Rhizobium strains (3889, CP5b and IC 26) were studied on 5 chickpea (Cicer arietinum L.) genotypes (Jordan local, ILC 72 from Spain, ILC 484 from Turkey, C 235 from India, and ILC 1272 from U.S.A.). The main objective of the work was to investigate the effect of inoculation with different Rhizobium strains on yield, nodulation and other agronomic characteristics of different chickpea genotypes. Inoculation with Rhizobium resulted in a significant increase in grain yield for all genotypes tested. The average increase due to inoculation was 110% over the uninoculated control. Inoculation resulted in more nodules, greater nodule fresh weight and higher nitrogen uptake. The various Rhizobium strains differed in their effects. Genotypes responded differently to inoculation.  相似文献   

A survey of peach viruses in Lebanon     

E. Choueiri  C. Haddad  N. Abou Ghanem-Sabanadzovic  F. Jreijiri  S. Issa  A. T. Saad  B. Di  Terlizzi V. Savino 《EPPO Bulletin》2001,31(4):493-497

Field surveys were carried out in the main peach-growing areas of Lebanon to assess the presence and distribution of viruses and viroids in commercial orchards. Field inspections were made in spring and summer 2000 to observe symptoms of virus and viroid diseases respectively. In total, 950 trees in 95 commercial plantings from three different regions of Lebanon (Bekaa Valley, Mount Lebanon and north Lebanon) were surveyed and sampled. Immunoenzymatic tests (DAS-ELISA) were used to ascertain the presence of the following: Prunus necrotic ring spot ilarvirus (PNRSV), Prune dwarf ilarvirus (PDV), Apple mosaic ilarvirus (ApMV), Apple chlorotic leaf spot trichovirus (ACLSV), Plum pox potyvirus (PPV), Tomato ringspot nepovirus (ToRSV) and Strawberry latent ringspot nepovirus (SLRSV). Peach latent mosaic pelamoviroid (PLMVd) and Hop stunt hostuviroid (HSVd) were identified by molecular hybridization. About 25% of the tested samples were infected by one or more viruses. In particular, the prevailing virus was PNRSV (61.2% of infection), followed by ACLSV (27.1%), PDV (22.4%) and ApMV (2.1%). Mixed infections were about 13%. ToRSV, SLRSV and PPV were not found. HSVd was apparently absent, whereas PLMVd was identified in 34% of the samples examined. This viroid prevailed in certain areas of Mount Lebanon in both native and foreign cultivars.  相似文献   

A pilot study evaluating adaptive closed‐loop fluid resuscitation during states of absolute and relative hypovolemia in dogs          下载免费PDF全文

Behnood Gholami PhD  Wassim M. Haddad PhD  James M. Bailey MD  PhD  Beth Geist DVM  Yukie Ueyama DVM  William W. Muir DVM  PhD  DACVAA  DACVECC 《Journal of Veterinary Emergency and Critical Care》2018,28(5):436-446

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Attack Upon a Bather by a Swordfish: A Case Report     

Vidal Haddad  José Lima de Figueiredo 《The Forestry Chronicle》2009,20(4):344-346

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Use of mechanics of cohesive granular media for analysis of hardness and vitreousness of wheat endosperm     

J.Y. Delenne  Y. Haddad  J.C. Bnet  J. Abecassis 《Journal of Cereal Science》2008,47(3):438-444

The characterisation of the wheat endosperm by mechanical tests of compression highlighted a relation between the rupture energy and the elasticity modulus for different varieties of wheat; this relation allows us to distinguish mealy and vitreous endosperms. An approach based on the micromechanics of cohesive granular materials is used to analyse these experimental results. A geometrical model of the wheat endosperm made of grains linked by cohesive bonds is proposed. We introduced two parameters, the first one α represents the percentage of active bonds (bonds where the stiffness and strength are non-zero), and the second one β represents the threshold of the bond's rupture. The parameter β can be related to the cross-section of the bond. This model successfully describes the mechanical tests on the wheat endosperm. The comparison with the experimental tests makes it possible to clearly differentiate vitreous wheats and mealy wheats and then attribute this property to the parameter β. The model shows the same tendency as regards the evolution of the rupture energy and the elastic modulus with the parameter α. The modelling of endosperm by the mechanics of cohesive granular media provides a new theoretical framework to interpret the rheology of endosperm. This approach allows us to connect this rheology to the mechanical actions at the scale of the granules.  相似文献   

Inhibition of Protein Glycation by Combined Antioxidant and Antiglycation Constituents from a Phenolic Fraction of Sage (Salvia officinalis L.)     

Ben Khedher  Mohamed Raâfet  Hafsa  Jawhar  Haddad  Mohamed  Hammami  Mohamed 《Plant foods for human nutrition (Dordrecht, Netherlands)》2020,75(4):505-511

Plant Foods for Human Nutrition - Disturbed advanced glycation end products (AGEs)-oxidative stress axis is strongly linked to vascular complications observed in diabetes and other metabolic...  相似文献   

Vitamin K2 is a mitochondrial electron carrier that rescues pink1 deficiency     

Vos M  Esposito G  Edirisinghe JN  Vilain S  Haddad DM  Slabbaert JR  Van Meensel S  Schaap O  De Strooper B  Meganathan R  Morais VA  Verstreken P 《Science (New York, N.Y.)》2012,336(6086):1306-1310

Human UBIAD1 localizes to mitochondria and converts vitamin K(1) to vitamin K(2). Vitamin K(2) is best known as a cofactor in blood coagulation, but in bacteria it is a membrane-bound electron carrier. Whether vitamin K(2) exerts a similar carrier function in eukaryotic cells is unknown. We identified Drosophila UBIAD1/Heix as a modifier of pink1, a gene mutated in Parkinson's disease that affects mitochondrial function. We found that vitamin K(2) was necessary and sufficient to transfer electrons in Drosophila mitochondria. Heix mutants showed severe mitochondrial defects that were rescued by vitamin K(2), and, similar to ubiquinone, vitamin K(2) transferred electrons in Drosophila mitochondria, resulting in more efficient adenosine triphosphate (ATP) production. Thus, mitochondrial dysfunction was rescued by vitamin K(2) that serves as a mitochondrial electron carrier, helping to maintain normal ATP production.  相似文献   

Corridors increase plant species richness at large scales   总被引：1，自引：0，他引：1  

Damschen EI  Haddad NM  Orrock JL  Tewksbury JJ  Levey DJ 《Science (New York, N.Y.)》2006,313(5791):1284-1286

Habitat fragmentation is one of the largest threats to biodiversity. Landscape corridors, which are hypothesized to reduce the negative consequences of fragmentation, have become common features of ecological management plans worldwide. Despite their popularity, there is little evidence documenting the effectiveness of corridors in preserving biodiversity at large scales. Using a large-scale replicated experiment, we showed that habitat patches connected by corridors retain more native plant species than do isolated patches, that this difference increases over time, and that corridors do not promote invasion by exotic species. Our results support the use of corridors in biodiversity conservation.  相似文献