Publications by authors named "Chavkin M"

Background: Drowning persists as a preventable pediatric cause of severe morbidity and mortality. This study aims to investigate the risk factors, circumstances, and medical consequences associated with pediatric drowning incidents in order to identify patterns that can inform targeted interventions.

Methods: This was a retrospective analysis of a cohort of pediatric drowning cases.

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Genetic deficiencies provide insights into gene function in humans. Here we describe a patient with a very rare genetic deficiency of ADAM17. We show that the patient's PBMCs had impaired cytokine secretion in response to LPS stimulation, correlating with the clinical picture of severe bacteremia from which the patient suffered.

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Infections with Onchocerca lupi nematodes are diagnosed sporadically in the United States. We report 8 cases of canine onchocercosis in Minnesota, New Mexico, Colorado, and Florida. Identification of 1 cytochrome c oxidase subunit 1 gene haplotype identical to 1 of 5 from Europe suggests recent introduction of this nematode into the United States.

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Background: Onchocerca lupi, a filarioid of zoonotic concern, infects dogs and cats causing ocular lesions of different degrees, from minor to severe. However, infected animals do not always display overt clinical signs, rendering the diagnosis of the infection obscure to the majority of veterinarians. Canine onchocercosis has been reported in the Old World and the information on its occurrence in the United States, as well as its pathogenesis and clinical management is still meagre.

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Introduction: Children with Down syndrome present with multiple medical problems in a higher prevalence compared with the general population, which may lead to hospitalizations.

Methods: Analysis of 560 hospitalizations of 162 children aged 0-16 years with Down syndrome at Hadassah Medical Center during the years 1988-2007 compared with data on children in the general population, hospitalized at the same period. Data was collected from patient files and statistical data from the Ministry of Health.

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Over the last decade a significant increase in the life expectancy of people with Down syndrome (DS) has been observed, which has caused a higher incidence of morbidity as they age. However, there is a lack of literature regarding morbidity and hospitalization of adults with DS. Analysis of 297 hospitalizations of 120 adults with DS aged 18-73 years hospitalized at Hadassah Medical Centers during the years 1988-2007 compared with data of the general population, hospitalized at the same period.

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Objective: To evaluate, for clinically normal dogs, results of Schirmer tear tests in eyes without topical anesthetic (STT) and to detect differences associated with breed, sex, age, day, and time of day in eyes in which STT was performed after use of topical anesthetic (STTa).

Animals: 41 Beagles, 43 Labrador Retrievers, 25 Golden Retrievers, 26 English Springer Spaniels, and 22 Shetland Sheepdogs.

Procedure: Beagles had STT and STTa values measured twice daily for 5 days.

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The purpose of this study was to determine the temporal appearance of T. gondii in aqueous humor of cats orally inoculated with T. gondii using polymerase chain reaction (PCR) for the detection of the B1 gene.

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The purpose of this study was to assess the role of interleukin 6 (IL-6) in feline uveitis by measuring IL-6 activity in the serum and aqueous humor of cats. Serum and aqueous humor was collected from clinically normal, random source cats (n = 10); clinically normal, specific-pathogen free cats experimentally inoculated with Toxoplasma gondii strain ME49 and sampled sequentially for 20 months (n = 4); and client-owned cats with uveitis (n = 27). Interleukin 6 activity was measured in each sample.

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Three horses were examined because of exophthalmos and others signs indicative of a space-occupying orbital mass. In 2 horses, exenteration was used to remove the orbital mass. In a third horse, an orbital tumor and lung metastases were found at necropsy.

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Toxoplasma gondii-naive cats and cats previously infected orally with T. gondii tissue cysts were inoculated with soluble tachyzoite antigens plus adjuvant or adjuvant alone. Toxoplasma gondii-specific IgM and IgG were measured in serum, aqueous humor, and cerebrospinal fluid (CSF).

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Toxoplasma gondii-specific IgA, IgM, and IgG were measured by ELISA in the serum and aqueous humor of 29 client-owned cats with endogenous uveitis and 7 specific-pathogen-free cats tested sequentially for 20 weeks after inoculation with T gondii. Local antibody production in aqueous humor was estimated by multiplying the aqueous humor-to-serum T gondii-specific antibody ratio by the serum-to-aqueous humor total IgG (C value) or calicivirus-specific IgG (CTC value) ratio. Evidence for local production of antibody in aqueous humor was defined as C value greater than 8 or CTC value greater than 1.

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We decided to determine whether Toxoplasma gondii-specific IgM or IgG is produced locally or is deposited in the aqueous humor of T gondii-naive cats after primary or secondary inoculation with T gondii. Cats were orally inoculated with T gondii tissue cysts during weeks 0 and 36. Aqueous humor and serum T gondii-specific IgM and IgG were measured, using ELISA, during weeks 0, 2, 4, 6, 8, 12, 16, 20, 26, 34, 38, 40, 42, 44, 48, 56, 62, 66, and 72 after primary oral inoculation.

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Objectives: This report describes a unique group of German shepherd dogs with inherited ventricular arrhythmias and sudden death. Before death, these dogs have no evidence of cardiovascular failure.

Background: There are few spontaneous animal models of sudden death that permit intensive investigation.

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Proportional hospital accession ratios for chronic superficial keratitis (CSK) of dogs were determined for 16 US veterinary teaching hospitals participating in the Veterinary Medical Data Base between Jan 1, 1976 and Dec 31, 1991. The prevalence of CSK was significantly correlated (r = 0.90) with altitude of residence, but not with latitude, longitude, mean annual solar radiation, or mean annual relative humidity.

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Globule leukocyte tumor involving the distal portion of the jejunum and proximal portion of the ileum caused chronic vomiting and weight loss in a 3-year-old cat. The intestinal mass was resected during exploratory laparotomy. The histologic appearance of the mass was characterized by inclusion of numerous intracytoplasmic eosinophilic granules.

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A dog was presented to the New York State College of Veterinary Medicine with a one-month history of corneal ulceration. The corneal lesion was diagnosed as a persistent corneal erosion (PCE) and treated initially with debridement and supported with a contact lens. One week later, the corneal erosion remained unepithelialized.

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