Medicine and Health Sciences Commons^™

Biotechnology In The Conquest Of Infectious Diseases, Ashley T. Haase

Journal of the Minnesota Academy of Science

No abstract provided.

Allergies Related To Mosquitoes, Repellents, And Insecticides, James T.C. Li, Charles E. Reed

Journal of the Minnesota Academy of Science

Man's skin response to the mosquito bite exhibits great individual variability. The everyday immediate reaction consists o f a red, or erythematous wheal that lasts only one or two hours. Twenty to 24 hours after the mosquito bite, a delayed reaction of erythema, swelling, and itching may also occur. An individual may exhibit an immediate reaction, delayed reaction, both reactions, or neither reaction. Studies suggest that sensitization to mosquito saliva may be responsible for the inflammatory response. This hypothesis is supported by histologic studies which demonstrate striking infiltration of inflammatory cells at the site of mosquito bites. Severe local reactions …

Mosquitoes As Vectors Of Disease In Minnesota, John W. Washburn

Journal of the Minnesota Academy of Science

Diseases due to mosquito-borne viruses occur every summer in Minnesota. The incidence of Western encephalitis and LaCrosse encephalitis is usually low, but outbreaks of Western encephalitis have occurred in the past. Evidence of Jamestown Canyon virus activity has been found in Minnesota. This virus may represent a newly-recognized cause of central nervous system disease and encephalitis. The epidemiology of the mosquito-borne encephalitis viruses found in Minnesota and the methods of disease surveillance and control are discussed.

Minnesota's Response: The Mosquito Research Program, John Washburn, Nancy Read

Journal of the Minnesota Academy of Science

The Minnesota Mosquito Research Program (MMRP) was established in September 1984 in response to a request by Governor Perpich. The Minnesota Department of Health (MDH), as the lead agency, brought together a Working Group of distinguished North American experts to discuss the problems related to mosquito research and control. This Working Group- with advice from legislators and representatives from the community, environmental groups, and state and federal agencies- made recommendations for the development of a mosquito research and control program in Minnesota.

The Working Group divided its recommendations into two areas, research and administrative structure. An extensive research program in …

Effects Of Various Hormones On Human Carcinoma Cell Proliferation, Y. L. Gao, B. S. Leung, A. H. Potter, W.C.Y. Yu

Journal of the Minnesota Academy of Science

Cell proliferation of a mammary adenocarcinoma cell line, CAMA-1. is affected by a number of steroid hormones and prolactin in long-term cultures. Estrogenic compounds stimulate cell growth while antiestrogenic compounds inhibit it. Prolactin can synergize the estrogenic effect. Progesterone, glucocorticoid or androgen reduce cell proliferation. Dihydrotestosterone is a very potent inhibitor,- effective at as low as 10 nM, and its effect is independent of estrogen action. Cortisol is a less effective inhibitor at concentrations below 10 nM; at these levels cortisol exhibits a slight inhibition which appears to be unrelated to estrogenic action. However, at higher concentrations, cortisol markedly reduces …

Chlorofluorocarbon Effects On Cardiac, Pulmonary, And Respiratory Patients, Mildred E. Olson

Journal of the Minnesota Academy of Science

Research results from studies of the physiological effects of aerosal propellants on animals and people are summarized. The papers selected for this summary were published between 1968 and 1975. Effects of the 15 chlorofluorocarbons used as propellants have been recorded on the cardiac, pulmonary and respiratory functions of a number of animal species as well as man. The fifteen propellants have been classified into four groups on the basis of their degree of toxicity. Fluorocarbon 11, the most frequently used propellant, is in group 1, the most toxic. The relative toxicity of each of the 14 other propellants compared with …

Some Effects Of The Bite Of The Short-Tailed Shrew, Blarina Brevicauda, Howard F. Krosch

Journal of the Minnesota Academy of Science

Folklore, especially in Europe, has long maintained that shrews are extremely poisonous. Zoologists have discounted this belief as superstition until recently, when it was learned that at least two species of shrews - the European water shrew, Neomys fodiens, and the American short-tailed shrew, Blarina brevicauda - produce a toxin in their sub-maxillary glands.

The Abnormal Coxofemoral Articulation In The German Shepherd Dog, Griselda Hanlon

Journal of the Minnesota Academy of Science

A common abnormality among dogs of the coxofemoral articulation, known as developmental hip dysplasia, is discussed with special reference to its occurrence in the German Shepherd breed. Some observations made from serial radiographic studies of the maturation of normal and abnormal coxofemorol articulation of 200 experimental German Shepherd dogs are presented, and a method of measuring the ilio-acetabular angle is described. Further evaluation will be made of the angle as an early predictor in the course of developmental hip dysplasia.

Night Vision, Charles Sheard

Journal of the Minnesota Academy of Science

No abstract provided.

Observations On Vitrified And Frozen Muscle Fibers In Polarized Light, Gregory Thoennes

Journal of the Minnesota Academy of Science

No abstract provided.

Five Generations Of Cerebellar Ataxia In The Human And Possibilities Of Its Genetic Control, C. P. Oliver, R. Gray

Journal of the Minnesota Academy of Science

No abstract provided.

Adrenaline, Insulin, Potassium, And Phosphorus In Carbohydrate Metabolism, J. Clifford Stickney

Journal of the Minnesota Academy of Science

No abstract provided.