1976 Nebraska maternal mortality review for Maternal Child Health Committee Nebraska Medical Association.
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Prevalence and potential vectors of Haemoproteus in Nebraska mouring doves.
Three hundred and nine mourning doves (Zenaida macroura) from Lancaster County, Nebraska, were examined for species of Haemoproteus. Older doves possessed higher Haemoproteus prevalences than younger doves. Mean total prevalence for each dove age group was as follows: adults, 61% H. sacharovi and 83% H. maccallumi; immatures, 35% H. sacharovi and 42% H. maccallumi; and nestlings, 31% H. sacharovi and 16% H. maccallumi. Yearly prevalences were less variable in mature doves than in immature and nestling doves. No correlation between nestling and parent Haemoproteus infections were observed, but nestmates in 10 or 18 nests harbored equivalent infections. Stilbometopa podopostyla and Microlynchia pusilla (Hippoboscidae) were collected from Nebraska doves. Hippoboscidae were collected from doves of all ages from April to August. Dove baited fly traps yielded Culex tarsalis and C. pipiens in Nebraska and Culicoides haematopotus, C. crepuscularis, and Simulium aureaum in Ames, Iowa.
Animals↗
New species of Gyrodactylus and Dactylogyrus (Trematoda: Monogenea) from fishes of Nebraska.
Six new monogenetic trematodes are described from Nebraska fishes: Gyrodactylus bulbacanthus sp. n. from Fundulus kansae (Garman); G. callawayensis sp. n. from Notropis lutrensis (Baird and Girard); G. eos sp. n. from Phoxinus eos (Cope); G. nebraskensis from Phoxinus neogaeus (Cope); G. planensis from Notropis dorsalis (Agassiz); and Dactylogyrus pectenatus from Pimephales promelas (Rafinesque). This is the second report of monogeneans from Nebraska fishes.
Animals↗
Leukemia among Nebraska farmers: a death certificate study.
The risk of leukemia among farmers was studied using records of death certificates from Nebraska, 1957--1974. Comparison of occupation, as recorded on the death certificate, for 1084 leukemia deaths and 2168 deaths from other causes, matched for age at death, year of death, county of residence, race, and sex, revealed an elevated risk of leukemia among farmers (odds ratio = 1.25). The risk was greatest among farmers born after 1900 and dying before age 66 (odds ratio = 1.83). Stratification by county of residence showed a significantly elevated risk for farmers from heavy corn producing counties.
Adult↗
Nitrogen fixation (acetylene reduction) associated with roots of winter wheat and sorghum in Nebraska.
Root segments and root-soil cores (6.5-cm diameter) from fields and nurseries of winter wheat and sorghum were tested for N2 fixation by using the acetylene reduction assay. Wheat samples (approximately 1,200) from 109 sites generally had low or no activity (0 to 3.1 nmol of C2H4 produced per h per g [dry weight] of root segments), even after 24 h of incubation. However, a commercial field of Scout 66, located in western Nebraska, exhibited appreciable activity (290 nmol of C2H4 produced per h per g [dry weight] of root segments). Of 400 sorghum lines and crosses, grain sorghums (i.e., CK-60A, Wheatland A, B517, and NP-16) generally exhibited higher nitrogenase activity than forage sorghums or winter wheats. CK-60A, a male sterile grain sorghum, was sampled at four locations and had the most consistent activity of 24 to 1,100 nmol of C2H4 produced per h per core. The maximum rate extrapolated to 2.5 g of N per hectare per day. Numerous N2-fixing bacterial isolates were obtained from wheat and sorghum roots that exhibited high nitrogenase activity. Most isolates were members of the Enterobacteriacae, i.e., Klebsiella pneumoniae, Enterobacter cloacae, and Erwinia herbicola.
Acetylene↗
Isolation and identification of mycoplasma agalactiae subsp. bovis from arthritic cattle in Iowa and Nebraska.
Two strains of Mycoplasma were isolated from synovial fluids of arthritic feeder cattle and were identified as Mycoplasma agalactiae subsp. bovis by growth inhibition and fluorescent antibody tests. The strains (Iowa 1136 and Nebraska 2) could not be distinguished from known strains (Donetta and California 01) by immunoelectrophoresis or by agar gel precipitation.
Animals↗
New purple sulfur bacteria genomes from Nebraska salt marsh enrichments.
Two genomes from a Winogradsky column enrichment from the Nebraska salt marshes were sequenced. The analysis of whole-genome phylogeny and average nucleotide identity comparisons indicated that these belong to species of purple sulfur bacteria, Halochromatium and Ectothiorhodospira marina, that have not been described before.
Ectothiorhodospira↗
Physicochemical properties of Nebraska calf diarrhea virus hemagglutinin.
Highly purified Nebraska calf diarrhea virus (NCDV) was prepared by cesium chloride density gradient centrifugation. The effect of temperature, pH, different concentrations of formaldehyde, chloroform, ether, ethyl alcohol, and methyl alcohol on NCDV hemagglutinin and virus morphology was studied. NCDV hemagglutinin was inactivated by temperature, pH 2.0, chloroform, ethyl alcohol, and methyl alcohol.
Alcohols↗
Aspergillosis in common crows in Nebraska, 1974.
During fall 1974, approximately 1,000 to 1,500 common crows (Corvus brachyrhynchos) died of aspergillosis in south-central Nebraska. The birds were debilitated, lethargic and dyspneic. On necropsy, typical lesions of aspergillosis were found in the lungs and air sacs. Histopathologic examination revealed granulomatous lesions around fungal hyphae in the respiratory system.
Animals↗
An epornitic of avian cholera in waterfowl and common crows in Phelps County, Nebraska, in the spring, 1975.
In the spring of 1975, many species of waterfowl and common crows (Corvus brachyrhynchos) were found dead in Phelps County, Nebraska. About 25,000 water fowl and at least 3,000 crows died in the epornitic. Few waterfowl were seen dying, but the crows experienced a chronic illness during which they became debilitated and were lethargic and dyspneic. Gross and microscopic lesions in the waterfowl were typical for acute avian cholera. The crows had dark, firm areas within the lungs, loosely adhered yellow fibrous material in the pericardial sac and air sacs and, occasionally, liver abscesses. Microscopically, focal purulent pneumonia was present and a fibrinopurulent exudate overlaid a granulomatous reaction on the heart and lung surfaces. Isolation of Pasteurella multocida serotype 1 confirmed the diagnosis of acute and chronic avian cholera in the waterfowl and crows, respectively.
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Osteoarthrosis in a coyote x dog hybrid from Nebraska.
Osteoarthrosis is described in a wild, 14-year-old coyote (Canis latrans) x dog (C. familiaris) hybrid shot in southeastern Nebraska. There was ankylosis of five vertebrae, the head of the left femur was absent, and periarticular osteophytes occurred throughout the skeleton. The age is significant because wild coyotes seldom live beyond 6 years and coyote x dog hybrids are considered to be less fit for survival in the wild than coyotes.
Animals↗
Liver transplantation at the University of Nebraska Medical Center from 1985 to 1992.
Based on our 7 and one-half-year experience with liver transplantation at the University of Nebraska Medical Center: 1. Success and growth of the program has been, in part, the result of close interaction and support of the various specialists involved. 2. We have demonstrated that outstanding patient and graft survival rates can be obtained with cyclosporine/prednisone immunosuppression. 3. Few, if any, technical contraindications exist to liver transplantation. 4. Surgical advances have allowed allografts to be salvaged which would otherwise require replacement. 5. Routine donor-liver biopsy prior to implantation has reduced the rate of primary nonfunction. 6. New strategies to improve survival for patients with hepatitis-B-related liver disease and hepatic malignancies undergoing liver transplantation need to be developed. 7. The management of patients with fulminant hepatic failure is evolving and now includes innovative approaches such as the use of ECLS and auxiliary transplants.
Academic Medical Centers↗
Food habit changes of Chinese persons living in Lincoln, Nebraska.
Qualitative and quantitative changes in food habits of Chinese persons living in Lincoln, Nebraska, were evaluated. Findings indicated that these people do have a flexible attitude toward foods. Incorporation of American foods into their diet and a decreased consumption of Chinese foods showed that a continuous process of food-habit changing is occurring in this group. In particular, more American foods have been incorporated in their breakfast and lunch patterns, while for the dinner meal, the more traditional Chinese foods continue to be eaten. Factors related to the ease of adaptation to American food were investigated, and possible implications are suggested.
Adult↗
Nebraska physicians' attitudes and practices in the field of infant feeding and nutrition.
A questionnaire was mailed to all pediatricians, family practitioners, and general practitioners in Nebraska to determine their attitudes and practices concerning infant feeding and nutrition. One hundred seventy responded. Their attitudes and practices regarding infant feeding and nutrition generally seemed to be positive. Areas in which they were undecided were often nutrition concerns which are currently being researched.
Attitude of Health Personnel↗
New complement-fixation test for the human reovirus-like agent of infantile gastroenteritis. Nebraska calf diarrhea virus used as antigen.
A complement-fixation (C.F.) test for the human reovirus-like agent of infantile gastroenteritis has been developed using the serologically related Nebraska calf diarrhoea virus (N.C.D.V.) as antigen. Most infants and children who shed the agent in stools and/or who demonstrated serological (C.F.) evidence of infection with a reovirus-like-particle-positive human stool-filtrate C.F. antigen also demonstrated serological evidence of infection when a concentrated N.C.D.V. preparation was employed AS C.F. antigen. The N.C.D.V., which was previously shown to be related to the human reovirus-like agent, was found to be related antigenically to the epizootic diarrhoea of infant mice (E.D.I.M.) virus also. Studies on the prevalence of C.F. antibody in sera from infants and young children revealed a pattern of rapid acquisition of antibody to both the human reovirus-like agent and the N.C.D.V. as over 80 percent of these individuals possessed antibody to each agent by 36 months of age. A strong positive association was found in the results obtained with the two antigens. The ready availability of cell-culture grown N.C.D.V., and its ability to serve as a "substitute" C.F. antigen for the human reovirus-like agent, should enable the serodiagnosis of many cases of disease due to the human agent and facilitate seroepidemiological studies of such infections. In addition, the observation that a large proportion of individuals infected with the human reovirus-like agent develop serological evidence of infection not only to the human agent but to the calf agent as well may have important implications in the immunoprophylaxis of disease caused by the human reovirus-like agent.
Animals↗
Hemagglutination and hemagglutination-inhibition studies with a strain of Nebraska calf diarrhea virus (bovine rotavirus).
A hemagglutinin has been prepared from Nebraska calf diarrhea virus (NCDV) propagated in BS-C-1 cell line. After cesium chloride centrifugation, the hemagglutinin of the bovine rotavirus was found to be associated with intact virions (density 1.355 g/ml) but not with virions lacking an outer capsid layer (density 1.375 g/ml). In hemagglutination-inhibition (HAI) tests, the hemagglutinin reacted specifically with NCDV serum, and HAI seroconversions were detected in some sera tested. Cross-reactions were observed in complement fixation tests between the human and bovine rotaviruses but were not demonstrated by HAI, suggesting that the hemagglutinin detects a specific rather than a group antibody response.
Animals↗
Complement fixation test of Nebraska calf diarrhea virus with calf serum.
A complement fixation (CF) test for neonatal calf diarrhea has been developed with Nebraska calf diarrhea virus (NCDV) as antigen. The CF antigenicity of NCDV appeared in BK cell cultures for the first time 3 days after inoculation. Usually, the unconcentrated BK cell culture fluid infected with NCDV possessed poor CF antigenicity. The fluid concentrated by ultracentrifugation and ultrafiltration and with polyethylene glycol 6000 revealed a high-titered CF antigenicity to antiserum against NCDV. The antigen was not sensitive to lipid solvents, but was relatively resistant to heating. It was recognized that the concentrated fluid of cell culture infected with NCDV was available as antigen in the CF test for the serological demonstration of infection with a calf reovirus-like agent. The wide prevalence of diarrhea among Japanese calves with the calf reovirus-like agent was revealed from the results of CF and neutralization tests of NCDV.
Animals↗
Hemagglutination with Nebraska calf diarrhea virus.
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