Treatment of contaminated radial fracture in Sprague-Dawley rats by application of a degradable polymer releasing gentamicin     

Yuval Ramot  Michal Steiner  Netanel Amouyal  Yossi Lavie  Guy Klaiman  Abraham J. Domb  Abraham Nyska  Tal Hagigit 《Journal of toxicologic pathology》2021,34(1):11

Fracture-related infections remain a leading cause of morbidity and mortality. We aimed to establish a simple contaminated radial osteotomy model to assess the efficacy of a biodegradable polymer poly(sebacic-co-ricinoleic acid) [p(SA-RA)] containing 20% w/w gentamicin. A unilateral transverse osteotomy was induced in Sprague-Dawley (SD) rats, followed by application of Staphylococcus aureus suspension over the fracture. After successfully establishing the contaminated open fracture model, we treated the rats either systemically (intraperitoneal cefuroxime), locally with p(SA-RA) containing gentamicin, or both. Control groups included non-contaminated group and contaminated groups that were either untreated or treated with the polymer alone. After 4 weeks, the bones were subjected to micro-CT scanning and microbiological and histopathology evaluations. Micro-CT analysis revealed similar changes in the group subjected to both local and systemic treatment as in the non-contaminated control group. Lack of detectable bacterial growth was noted in most animals of the group subjected to both local and systemic treatment, and all samples were negative for S. aureus. Histopathological evaluation revealed that all treatment modalities containing antibiotics were highly effective in reducing infection and promoting callus repair, resulting in early bone healing. While p(SA-RA) containing gentamicin treatment showed better results than cefuroxime, the combination of local and systemic treatment displayed the highest therapeutic potential in this model.  相似文献   

A novel method for rearing the progeny of wild mediterranean fruit flies using artificial fruit     

Roy Kaspi  Idit Feitelson  Tamar Drezner  Boaz Yuval 《Phytoparasitica》2001,29(1):15-22

A technique for rearing the progeny of wildCeratitis capitata flies was developed. The method is based on wild captured flies which are allowed to oviposit in artificial fruit containing larval rearing medium. Flies develop in the fruit from eggs to last larval instar, then exit the fruit and pupate within vermiculite. This method was shown to be feasible and efficient, and to increase considerably the number of wild flies for testing purposes. Possible contribution to the Sterile Insect Technique (SIT) and potential applications of the method are discussed.  相似文献   

A review of approaches to quality assurance of veterinary systems for health-status certification     

Stärk KD  Salman M  Tempelman Y  Kihm U 《Preventive veterinary medicine》2002,56(2):129-140

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Electronic measurement of canine mean platelet volume     

Waner T  Yuval D  Nyska A 《Veterinary clinical pathology / American Society for Veterinary Clinical Pathology》1998,18(4):84-86

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Regenerating Mandibular Bone Using rhBMP‐2: Part 2—Treatment of Chronic,Defect Non‐Union Fractures          下载免费PDF全文

Boaz Arzi DVM  Diplomate AVDC & EVDC  Daniel J. Huey PhD  Derek D. Cissell VMD  Diplomate ACVR  Kyriacos A. Athanasiou PhD  PE 《Veterinary surgery : VS》2015,44(4):410-416

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Germination, genetics, and growth of an ancient date seed     

Sallon S  Solowey E  Cohen Y  Korchinsky R  Egli M  Woodhatch I  Simchoni O  Kislev M 《Science (New York, N.Y.)》2008,320(5882):1464

An ancient date seed (Phoenix dactylifera L.) excavated from Masada and radiocarbon-dated to the first century Common Era was germinated. Climatic conditions at the Dead Sea may have contributed to the longevity of this oldest, directly dated, viable seed. Growth and development of the seedling over 26 months was compatible with normal date seedlings propagated from modern seeds. Preliminary molecular characterization demonstrated high levels of genetic variation in comparison to modern, elite date cultivars currently growing in Israel. As a representative of an extinct date palm population, this seedling can provide insights into the historic date culture of the Dead Sea region. It also has importance for seed banking and conservation and may be of relevance to modern date palm cultivation.  相似文献   

Editing of CD1d-bound lipid antigens by endosomal lipid transfer proteins   总被引：3，自引：0，他引：3  

Zhou D  Cantu C  Sagiv Y  Schrantz N  Kulkarni AB  Qi X  Mahuran DJ  Morales CR  Grabowski GA  Benlagha K  Savage P  Bendelac A  Teyton L 《Science (New York, N.Y.)》2004,303(5657):523-527

It is now established that CD1 molecules present lipid antigens to T cells, although it is not clear how the exchange of lipids between membrane compartments and the CD1 binding groove is assisted. We report that mice deficient in prosaposin, the precursor to a family of endosomal lipid transfer proteins (LTP), exhibit specific defects in CD1d-mediated antigen presentation and lack Valpha14 NKT cells. In vitro, saposins extracted monomeric lipids from membranes and from CD1, thereby promoting the loading as well as the editing of lipids on CD1. Transient complexes between CD1, lipid, and LTP suggested a "tug-of-war" model in which lipid exchange between CD1 and LTP is on the basis of their respective affinities for lipids. LTPs constitute a previously unknown link between lipid metabolism and immunity and are likely to exert a profound influence on the repertoire of self, tumor, and microbial lipid antigens.  相似文献   

BRIEF COMMUNICATION: Electronic Measurement of Canine Mean Platelet Volume     

Trevor Waner  Dror Yuval  Abraham Nyska 《Veterinary clinical pathology / American Society for Veterinary Clinical Pathology》1989,18(4):84-86

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Demographic and environmental risk factors for infection by Theileria equi in 590 horses in Israel     

Steinman A  Zimmerman T  Klement E  Lensky IM  Berlin D  Gottlieb Y  Baneth G 《Veterinary parasitology》2012,187(3-4):558-562

The prevalence of Theileria equi infection as well as the environmental and demographic risk factors for infection was studied in 590 healthy horses from 46 farms in Israel. The prevalence of T. equi DNA was assessed using a polymerase chain reaction for a segment of the Theileria 18S rRNA gene. The overall prevalence was 26.4% (156/590). There was a significant geographical variation in the prevalence of T. equi infection, ranging from 9.3% (25/270) in the central lowlands to 81.7% (49/60) in the Golan Heights. The prevalence of T. equi infection was found to be significantly associated with management types with more horses with access to pasture being positive. Breed was identified as a risk factor for T. equi infection in a univariate analysis with relatively high infection rates in the Quarter horse and local breeds (41.1% and 36.3% respectively), while ponies and Arabian horses had a relatively low prevalence (10% and 9.1%, respectively). However, since a correlation between geographic location and breed was found, it is difficult to draw definite conclusions regarding this risk factor. Age and gender were not found as risk factors for T. equi infection in this study. The environmental variables that were significantly associated with positivity were relative humidity and minimum land surface temperature at day which both showed negative correlation with T. equi prevalence. In conclusion, Israel was found to be enzootic for T. equi infection, as indicated by the high sub-clinical infection rate, which differed between geographical areas.  相似文献   

Detection of Bartonella spp. in wild rodents in Israel using HRM real-time PCR     

Danny Morick  Gad Baneth  Boaz Avidor  Michael Y. Kosoy  Kosta Y. Mumcuoglu  Dvir Mintz  Osnat Eyal  Ralph Goethe  Andreas Mietze  Nahum Shpigel  Shimon Harrus   《Veterinary microbiology》2009,139(3-4):293-297

The prevalence of Bartonella spp. in wild rodents was studied in 19 geographical locations in Israel. One hundred and twelve rodents belonging to five species (Mus musculus, Rattus rattus, Microtus socialis, Acomys cahirinus and Apodemus sylvaticus) were included in the survey. In addition, 156 ectoparasites were collected from the rodents. Spleen sample from each rodent and the ectoparasites were examined for the presence of Bartonella DNA using high resolution melt (HRM) real-time PCR. The method was designed for the simultaneous detection and differentiation of eight Bartonella spp. according to the nucleotide variation in each of two gene fragments (rpoB and gltA) and the 16S–23S intergenic spacer (ITS) locus, using the same PCR protocol which allowed the simultaneous amplification of the three different loci. Bartonella DNA was detected in spleen samples of 19 out of 79 (24%) black rats (R. rattus) and in 1 of 4 (25%) Cairo spiny mice (A. cahirinus). In addition, 15 of 34 (44%) flea pools harbored Bartonella DNA. Only rat flea (Xenopsyla cheopis) pools collected from black rats (R. rattus) were positive for Bartonella DNA. The Bartonella sp. detected in spleen samples from black rats (R. rattus) was closely related to both B. tribocorum and B. elizabethae. The species detected in the Cairo spiny mouse (A. cahirinus) spleen sample was closely related to the zoonotic pathogen, B. elizabethae. These results indicate that Bartonella species are highly prevalent in suburban rodent populations and their ectoparasites in Israel. Further investigation of the prevalence and zoonotic potential of the Bartonella species detected in the black rats and the Cairo spiny mouse is warranted.  相似文献