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Bell, R.J.W.; Kingston, J.K.; Mogg, T.D.; Perkins, N.R. |
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Title |
The prevalence of gastric ulceration in racehorses in New Zealand |
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Journal Article |
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Year |
2007 |
Publication |
New Zealand Veterinary Journal |
Abbreviated Journal |
N Z Vet J |
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Volume |
55 |
Issue |
1 |
Pages |
13-18 |
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Keywords |
Age Factors; *Animal Feed; Animal Husbandry/methods; Animals; Female; Horse Diseases/*epidemiology/pathology/prevention & control; Horses; Male; New Zealand/epidemiology; Physical Conditioning, Animal/*adverse effects/physiology; Poaceae; Prevalence; Risk Factors; Severity of Illness Index; Sex Factors; Stomach Ulcer/epidemiology/pathology/prevention & control/*veterinary; Time Factors |
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AIM: To establish the prevalence and factors influencing the prevalence and severity of gastric ulceration in racehorses in New Zealand. METHODS: Horses (n=171) in active training for racing by trainers (n=24) located throughout New Zealand were examined using gastroscopy during 2003 and 2004. Images of the examination were recorded and reviewed, and an ordinal grade based on the severity of gastric ulceration present was assigned, using the grading system proposed by the Equine Gastric Ulcer Council (EGUC). Information about the horses such as age, breed, sex, stabling, time at pasture, pasture quality, and presence of clinical signs consistent with equine gastric ulcer syndrome (EGUS) was recorded. RESULTS: Of the 171 horses in the study, 133 (78%) were Thoroughbreds and 38 (22%) were Standardbreds. Evidence of gastric ulceration was present in 151 (88.3%) of these. Prevalence of ulceration was higher at the lesser curvature (LC) and greater curvature (GC) of the stomach than at the saccus caecus (SC; p<0.01), and ulceration was more severe at the LC than at either the GC (p=0.02) or the SC (p<0.001). The prevalence of ulceration did not differ between the two breeds (p=0.51) or between horses of differing ages (p=0.56). Gastric ulceration was evident in 125/141 (89%) horses kept at pasture for at least 4 h/day, in all 13 (100%) horses kept at pasture full time, and in 16/17 (94%) horses stabled full time. Prevalence and severity of ulceration did not differ between horses stabled full time, kept at pasture for part of the day or kept at pasture full time (p=0.33 and 0.13, respectively), and for horses grazed on pasture severity of ulceration did not vary significantly with the quality of the pasture (p=0.12). Neither prevalence (p=0.26) nor severity (p=0.49) of gastric ulceration varied significantly with duration of training. CONCLUSIONS: The prevalence of gastric ulceration in racehorses in New Zealand is similar to that reported elsewhere for horses in active training for racing. Access to pasture for some or all of the day did not appear to be protective. |
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Institute of Veterinary, Animal and Biomedical Sciences, Massey University, Private Bag 11222, Palmerston North, New Zealand. robinjw@gmail.com |
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0048-0169 |
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PMID:17339911 |
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Equine Behaviour @ team @ |
Serial |
4020 |
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Author |
Boissevain, I. |
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Title |
[Animal and human rights in installments] |
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Year |
2007 |
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Tijdschrift Voor Diergeneeskunde |
Abbreviated Journal |
Tijdschr Diergeneeskd |
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Volume |
132 |
Issue |
4 |
Pages |
132 |
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Keywords |
Animals; Clinical Competence/*standards; Horse Diseases/*diagnosis; Horses; Humans; Netherlands; Time Factors; Veterinary Medicine/*methods/*standards |
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Dutch |
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Dierenrechten en mensenrechten in termijnen |
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0040-7453 |
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PMID:17366876 |
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Equine Behaviour @ team @ |
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4018 |
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Kristiansen, K.K.; Kold, S.E. |
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Title |
Multivariable analysis of factors influencing outcome of 2 treatment protocols in 128 cases of horses responding positively to intra-articular analgesia of the distal interphalangeal joint |
Type |
Journal Article |
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Year |
2007 |
Publication |
Equine Veterinary Journal |
Abbreviated Journal |
Equine Vet J |
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Volume |
39 |
Issue |
2 |
Pages |
150-156 |
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Keywords |
Analgesia/methods/*veterinary; Anesthesia, Local/methods/veterinary; Animals; Anti-Inflammatory Agents/therapeutic use; Female; Foot Diseases/drug therapy/prevention & control/*veterinary; Glycosaminoglycans/therapeutic use; Horse Diseases/*drug therapy/prevention & control; Horses; Injections, Intra-Articular/*veterinary; Joint Diseases/drug therapy/prevention & control/veterinary; Lameness, Animal/drug therapy/prevention & control; Male; Methylprednisolone/analogs & derivatives/therapeutic use; Multivariate Analysis; Pain/prevention & control/veterinary; Retrospective Studies; Time Factors; *Toe Joint/drug effects/pathology; Treatment Outcome |
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Abstract |
REASONS FOR PERFORMING STUDY: There is limited knowledge available of factors influencing response to treatments of the DIP-joint in horses with lameness responding to diagnostic analgesia of the DIP-joint. For this reason a multivariable statistical analysis was performed. HYPOTHESIS: Horses with lameness reduced by > or = 75% 10 min after intra-articular analgesia of the DIP-joint, can be treated successfully by intra-articular medication of the joint. Multiple factors influence the response to treatment. METHODS: The study was performed retrospectively based on clinical records of horses treated with either polysulphated glycosaminoglycan (PSGAG) or methylprednisolone acetate (MPA) in the DIP-joint between January 1996 and January 2003. Information was collected from clinical records and from the owners of the horses via a detailed questionnaire, in which they described their perception of the outcome a minimum of one year after treatment. Allocation of the horses to the 2 treatment groups was done mainly because of a change in treatment policy. In Regime A all horses received 3 intra-articular injections of PSGAG approximately 8 days apart, whereas in Regime B all horses received a single intra-articular injection of MPA as a first treatment. If the horse did not improve sufficiently to return to work by 4 weeks, a series of 3 intra-articular PSGAG injections was administered. RESULTS: Of the horses receiving Regime A, 67% had a successful outcome, compared with 46% of the group receiving Regime B. A significantly better result was obtained in dressage horses than in jumping horses (eventing and showjumping). Other variables such as age, duration of lameness, distribution of lameness, degree of lameness, response to DIP-joint analgesia and radiographic observations were also associated with success of treatment. CONCLUSIONS AND POTENTIAL RELEVANCE: There is a rationale for using either PSGAG or MPA intra-articularly in the treatment of lameness, reduced > or = 75% within 10 min of analgesia of the DIP-joint. |
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Willesley Equine Clinic Ltd., Tetbury, Gloucestershire, GL8 8QU UK |
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0425-1644 |
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Notes |
PMID:17378444 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
3707 |
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Winkelmayr, B.; Peham, C.; Fruhwirth, B.; Licka, T.; Scheidl, M. |
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Title |
Evaluation of the force acting on the back of the horse with an English saddle and a side saddle at walk, trot and canter |
Type |
Journal Article |
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Year |
2006 |
Publication |
Equine Veterinary Journal. Supplement |
Abbreviated Journal |
Equine Vet J Suppl |
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Issue |
36 |
Pages |
406-410 |
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Keywords |
Animals; Back/*physiology; Back Pain/etiology/veterinary; Biomechanics; Exercise Test/veterinary; Female; Gait/physiology; Horse Diseases/etiology; Horses/*physiology; Humans; Locomotion/physiology; Male; Movement/*physiology; *Physical Conditioning, Animal/instrumentation/methods/physiology; *Pressure; Weight-Bearing/*physiology |
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REASONS FOR PERFORMING STUDY: Force transmission under an English saddle (ES) at walk, trot and canter is commonly evaluated, but the influence of a side saddle (SS) on the equine back has not been documented. HYPOTHESIS: Force transmission under a SS, with its asymmetric construction, is different from an ES in walk, trot and canter, expressed in maximum overall force (MOF), force in the quarters of the saddle mat, and centre of pressure (COP). The biomechanics of the equine back are different under a SS compared to ES. METHODS: Thirteen horses without clinical signs of back pain ridden in an indoor riding school with both saddles were measured using an electronic saddle sensor pad. Synchronous kinematic measurements were carried out with tracing markers placed along the back in front of (withers, W) and behind the saddle (4th lumbar vertebra, L4). At least 6 motion cycles at walk, trot and canter with both saddles (ES, SS) were measured. Out of the pressure distribution the maximum overall force (MOF) and the location of the centre of pressure (COP) were calculated. RESULTS: Under the SS the centre of pressure was located to the right of the median and slightly caudal compared to the COP under the ES in all gaits. The MOF was significantly different (P<0.01) between saddles. At walk, L4 showed significantly larger (P<0.01) vertical excursions under the ES. Under the SS relative horizontal movement of W was significantly reduced (P<0.01) at trot, and at canter the transversal movement was significantly reduced (P<0.01) . In both trot and canter, no significant differences in the movement of L4 were documented. CONCLUSIONS AND POTENTIAL RELEVANCE: The results demonstrate that the load under a SS creates asymmetric force transmission under the saddle, and also influences back movement. To change the load distribution on the back of horses with potential back pain and as a training variation, a combination of both riding styles is suitable. |
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Department V, Clinic of Orthopaedics in Ungulates, University of Veterinary Medicine, Veterinaerplatz 1, A-1210 Vienna, Austria |
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PMID:17402456 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
4007 |
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Author |
Robert, C.; Valette, J.P.; Denoix, J.M. |
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Title |
Correlation between routine radiographic findings and early racing career in French trotters |
Type |
Journal Article |
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Year |
2006 |
Publication |
Equine Veterinary Journal. Supplement |
Abbreviated Journal |
Equine Vet J Suppl |
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Volume |
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Issue |
36 |
Pages |
473-478 |
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Keywords |
Animals; Bone and Bones/anatomy & histology/pathology/*radiography; Carpus, Animal/anatomy & histology/pathology/radiography; Horse Diseases/diagnosis/radiography; Horses/*anatomy & histology/*physiology; Physical Conditioning, Animal/*physiology; Predictive Value of Tests; Sports; Stifle/anatomy & histology/pathology/radiography; Tarsus, Animal/anatomy & histology/pathology/radiography |
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REASONS FOR PERFORMING STUDY: The relationship between the presence of radiological abnormalities and subsequent racing performance is controversial. However, as training is expensive and time consuming, it would save time and money to identify subjects with osteo-articular lesions not compatible with a normal racing career on the basis of routine radiographic screenings at yearling age. OBJECTIVES: To evaluate the impact of osteo-articular lesions on racing ability in French Trotters and identify radiographic changes associated with failure in 'qualification', in order to provide objective criteria for selection of horses based on their osteo-articular status. HYPOTHESIS: The influence of radiographic findings (RF) on racing ability depends on their nature, location, clinical relevance and number. METHODS: The limbs of 202 French Trotters were radiographed just before they started training. All the RF were graded according to a standardised protocol depending on their severity. The success in 'qualification' (first race in career of French Trotters) was the criteria used to assess racing ability. Breeders and trainers were questioned about the causes for horses not racing. RESULTS: Overall 113 (55.9%) horses qualified. Osteoarticular lesions were directly responsible for nonqualification in 31% of the horses. Subjects with more than one abnormal RF, with abnormal RF on the fore-, hind-fetlock or proximal tarsus were less likely to qualify. Dorsal modelling in the front fetlock and osteochondrosis of the lateral trochlear ridge of the femur also significantly reduced the qualification rate. CONCLUSIONS: Most RF are compatible with beginning a racing career, but severe RF or multiple abnormal RF significantly compromise future racing career. POTENTIAL RELEVANCE: This study supports the use of routine radiographic programmes for detection of osteoarticular lesions in yearlings. A synthetic radiographic score, based on both the severity and the number of lesions, could be useful for breeders and trainers as complementary information to select their horses. |
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Address |
UMR INRA-ENVA de Biomecanique et Pathologie Locomotrice du Cheval, Ecole Veterinaire d'Alfort, 7 Av. du Gal de Gaulle, 94704 Maisons-Alfort Cedex, France |
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Notes |
PMID:17402469 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
4002 |
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Author |
Lucas, Z.; Raeside, J.I.; Betteridge, K.J. |
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Title |
Non-invasive assessment of the incidences of pregnancy and pregnancy loss in the feral horses of Sable Island |
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Journal Article |
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Year |
1991 |
Publication |
Journal of Reproduction and Fertility. Supplement |
Abbreviated Journal |
J Reprod Fertil Suppl |
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44 |
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479-488 |
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Abortion, Veterinary/*epidemiology; Animals; Animals, Wild/*physiology; Atlantic Islands; Estrogens/analysis; Feces/chemistry; Female; Fertilization; Gestational Age; Horse Diseases/*epidemiology; Horses; Incidence; Pregnancy; *Pregnancy, Animal |
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Field observations of 400 totally unmanaged feral horses on Sable Island, Nova Scotia, were complemented by oestrogen determinations in faecal samples from 154 identified females over a 4-year period (454 mare-years). Of mares that were sampled throughout the year and subsequently produced foals, 92.1% exhibited elevated faecal oestrogens between 15 October and 30 March. The results confirm that faecal oestrogens are a useful indicator of pregnancy after approximately 120 days gestation. Distribution of foaling resembled that seen in other feral populations, with 95% of births occurring from April through July. The foaling rate for mares aged 3 years or older was 62.0%, with 50.7% of mares foaling in 3 or 4 years. Foaling rates were low (4.1%) in mares bred as yearlings and rose with age to 70.8% in those bred as 4-year-olds. Fetal loss after Day 120 was deduced from faecal oestrogens to be 26.0% overall, with marked variation from year to year (9.6-37.3%) and with age (70.0% in those bred as yearlings, decreasing to 5.6% in those bred as 4-year-olds). Of 58 mares aged 2 years or older that were sampled every year, about half (49.6%) the barren years were attributable to fetal loss after 120 days gestation. All mares conceived in at least 2 of the 4 years, suggesting that pregnancy loss, even after Day 120, is as important as failure to conceive in causing barren years. |
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Department of Biomedical Sciences, Ontario Veterinary College, University of Guelph, Canada |
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0449-3087 |
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PMID:1795292 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2247 |
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Author |
Dowdle, W.R.; Schild, G.C. |
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Title |
Influenza: its antigenic variation and ecology |
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Journal Article |
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Year |
1976 |
Publication |
Bulletin of the Pan American Health Organization |
Abbreviated Journal |
Bull Pan Am Health Organ |
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Volume |
10 |
Issue |
3 |
Pages |
193-195 |
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Keywords |
Animals; *Antigens, Viral; Bird Diseases/microbiology; Birds; Hemagglutinins, Viral; Horse Diseases/microbiology; Horses; Humans; Influenza A virus/immunology/isolation & purification; Influenza, Human/epidemiology; Mutation; Neuraminidase/immunology; Orthomyxoviridae/enzymology/*immunology; Orthomyxoviridae Infections/microbiology/veterinary; Recombination, Genetic; Swine; Swine Diseases/microbiology |
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Influenza viruses have two surface antigens, the glycoprotein structures hemagglutinin (HA) and neuraminidase (NA). Antibodies to each of these are associated with immunity, but the structures themselves are antigenically variable. When an antigenic change is gradual over time it is referred to as a drift, while a sudden complete or major change in either or both antigens is termed a shift. The mechanism of antigenic drift is usually attributed to selection of preexisting mutants by pressure from increasing immunity in the human population. The mechanism of antigenic shift is less clear, but one tentative hypothesis is that shifts arise from mammalian or avian reservoirs, or through genetic recombination of human and animal influenza strains. |
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0085-4638 |
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PMID:187273 |
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Equine Behaviour @ team @ |
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2700 |
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Author |
Hinrichs, K.; Watson, E.D.; Kenney, R.M. |
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Title |
Granulosa cell tumor in a mare with a functional contralateral ovary |
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Journal Article |
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Year |
1990 |
Publication |
Journal of the American Veterinary Medical Association |
Abbreviated Journal |
J Am Vet Med Assoc |
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Volume |
197 |
Issue |
8 |
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1037-1038 |
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Animals; Corpus Luteum/*physiopathology; Female; Granulosa Cell Tumor/pathology/physiopathology/*veterinary; Horse Diseases/*pathology/physiopathology; Horses; Ovarian Neoplasms/pathology/*veterinary; Ovary/*pathology/physiopathology |
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A functional corpus luteum was found in the ovary contralateral to the ovary with a granulosa cell tumor in a 24-year-old Standardbred mare. The mare was ovariectomized because she was to be used as a jump mare for collection of semen from stallions. The blood concentration of progesterone was 2.2 ng/ml, and the luteal tissue progesterone concentration was 6.3 micrograms/mg. Atrophy of the contralateral ovary is one of the major signs used in diagnosis of granulosa cell tumor; however, our findings indicate that the ovary contralateral to a granulosa cell tumor is not invariably nonfunctional. |
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Department of Medicine, School of Veterinary Medicine, Tufts University, North Grafton, MA 01536 |
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0003-1488 |
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PMID:2243036 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
3802 |
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Author |
Sudia, W.D.; Fernandez, L.; Newhouse, V.F.; Sanz, R.; Calisher, C.H. |
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Title |
Arbovirus vector ecology studies in Mexico during the 1972 Venezuelan equine encephalitis outbreak |
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Journal Article |
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Year |
1975 |
Publication |
American Journal of Epidemiology |
Abbreviated Journal |
Am J Epidemiol |
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Volume |
101 |
Issue |
1 |
Pages |
51-58 |
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Keywords |
Animals; Arboviruses/isolation & purification; Culicidae/microbiology; Disease Vectors/*microbiology; Ecology; Encephalitis Virus, St. Louis/isolation & purification; Encephalitis Virus, Venezuelan Equine/*isolation & purification; Encephalitis Virus, Western Equine/isolation & purification; Encephalomyelitis, Equine/epidemiology/*transmission/veterinary; Horse Diseases/epidemiology/*transmission; Horses; Insect Vectors/microbiology; Mexico |
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Abstract |
Virus vector studies were conducted in the States of Durango, Chihuahua, and Tamaulipas, Mexico, in June and July 1972. Apparently only a low level of Venzuelan equine encephalitis (VEE) virus transmission to equines occured at the time of the study, and the infection was restricted to areas which had not experienced overt activity during the preceding year. The low level of infection was associated with a scarcity of mosquitoes. The IB (epidemic) strain of VEE virus was isolated from two pools of Anopheles pseudopunctipennis (Theo.) and the blood of one symptomatic equine. The low mosquito population, the relatively few equine cases observed, and the absence of reports of VEE human disease from the outbreak area suggested VEE virus persistence through a low-level mosquito-equine transmission cycle. Other studies have already indicated that wild vertebrates play no more than a minor role in outbreaks of epidemic VEE. Mosquito collections made in areas of the states of Durango, Chihuahua, and Tamaulipas, where considerable epidemic activity of VEE had occurred in 1971, failed to reveal evidence of VEE virus persistence. Twenty-nine ioslations of other arboviruses were also made in these studies: including 22 of St. Louis encephalitis virus (SLE), 2 of Flanders virus, 1 of Turlock virus, 1 of Trivittatus virus of the California Group, 1 of western equine encephalitis virus (VEE), and 2 (from Santa Rose) which possibly represent a hitherto unknown virus in the Bunyamwera Group. These are the first reports of SLE virus isolations from mosquitoes in Mexico, and the first demonstration of Trivittatus, VEE Turlock and Flanders viruses in Mexico from any source. |
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0002-9262 |
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Notes |
PMID:235213 |
Approved |
no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2706 |
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| Permanent link to this record |
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Author |
Crans, W.J.; McNelly, J.; Schulze, T.L.; Main, A. |
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Title |
Isolation of eastern equine encephalitis virus from Aedes sollicitans during an epizootic in southern New Jersey |
Type |
Journal Article |
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Year |
1986 |
Publication |
Journal of the American Mosquito Control Association |
Abbreviated Journal |
J Am Mosq Control Assoc |
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Volume |
2 |
Issue |
1 |
Pages |
68-72 |
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Keywords |
Aedes/*microbiology; Alphavirus/*isolation & purification; Animals; Disease Outbreaks/veterinary; Ecology; Encephalitis Virus, Eastern Equine/*isolation & purification; Encephalomyelitis, Equine/epidemiology/transmission/veterinary; Horse Diseases/epidemiology/transmission; Horses; Insect Vectors/microbiology; New Jersey |
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Abstract |
Eastern equine encephalitis virus (EEE) was isolated from the salt marsh mosquito, Aedes sollicitans, collected from coastal areas of New Jersey on 3 occasions during the late summer and fall of 1982. The isolations were made at a time when local Culiseta melanura were either undergoing a population increase or exhibiting high levels of EEE virus. Although no human cases were reported during the epizootic period, the data lend support to the hypothesis that Ae. sollicitans is capable of functioning as an epidemic vector in the coastal areas of New Jersey where human cases of EEE have been most common. |
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Address |
Mosquito Research and Control, Cook College, Rutgers University, New Brunswick, NJ 08903 |
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Publisher |
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Place of Publication |
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Editor |
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Language |
English |
Summary Language |
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Original Title |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
8756-971X |
ISBN |
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Medium |
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Expedition |
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Conference |
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Notes |
PMID:2853203 |
Approved |
no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2684 |
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| Permanent link to this record |
