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Biomedical subjects

G L Hoffman

Publications and source records attributed to G L Hoffman.

36 records · Page 2Linked to original sources
PubMed1976

Aneurysms of extracranial carotid arteries.

Twenty-three extracranial carotid artery aneurysms were encountered in 19 patients. Arteriosclerosis was evident in 16 aneurysms. Severe arterial hypertension affected all patients with arteriosclerotic lesions. Trauma, penetrating neck injury once, and blunt neck injury three times caused four aneurysms. Three aneurysms resulted from earlier carotid artery operations. All 19 patients were symptomatic. Neurologic symptoms affected 13 individuals. Local symptoms referable to the aneurysmal mass troubled 15 patients. Twenty-one aneurysms were treated operatively. There was no operative mortality. Aneurysmectomy with arterial reconstruction was performed 16 times. Aneurysmorrhaphy was undertaken on four occasions and carotid ligation once. Two strokes and multiple cranial nerve injury accounted for three operative complications. No neurologic complications occurred during follow-up totaling 360 man-months. These lesions may be successfully treated by a carefully performed, properly selected operation.

Adolescent↗
PubMed1975

Variation in response of channel catfish to Henneguya sp. infections (Protozoa: Myxosporidea).

Infections in channel catfish (Ictalurus punctatus, Rafinesque) induced by the sporozoan Henneguya (Protozoa: Myxosporidea) result in seven known and diverse disease manifestations. Most outstanding is an interlamellar branchial form responsible for significant losses among immature catfish, and a unique papillomatous form. The question of whether or not the species of Henneguya involved in these cases is H. exilis remains to be resolved.

Animals↗
PubMed1975

A disease of freshwater fishes caused by Tetrahymena corlissi Thompson, 1955, and a key for identification of holotrich ciliates of freshwater fishes.

Tetrahymena corlissi, a free-living protozoan, apparently caused the death of large number of guppies (Poecilia reticulatus) and occasionally other fishes, in aquaria and hatcheries at several locations. Apparently the disease occurs when the fish and protozoan populations are both at a high level of density. The signs include white spots and epidermal damage. Histologically, T. corlissi could be seen in skin, muscle, and viscera; in some there was marked inflammation, in others there was little tissue reaction. A key is presented for the identification of invasive fish ciliates: Chilodonella, Hemiophrys, Ichthyophthirius, Ophryoglena, and Tetrahymena.

Animals↗
PubMed1970

Unusual pathogenicity of a common metacercaria of fish.

The metacercaria of Posthodiplostomum minimum centrarchi Hoffman, 1958, is reported from an unusual host, Roccus saxatilis, from North Carolina. Although few dead or moribund fish were observed, there were many deformed fish, few of which survived. The metacercariae were in the musculature and orbit of the eye instead of in the usual location in the centrarchid hosts.

Animals↗
PubMed1970

Control methods for snail-borne zoonoses.

All trematodes which cause infections and diseases in humans (zoonoses) require snails for their first intermediate host. Some have additional intermediate hosts such as crustaceans, fishes and frogs. In this paper I have discussed the use of various procedures for controlling snail populations thereby reducing the population of trematodes whose cercariae penetrate the skin of man, or which are acquired by eating raw aquatic vegetation such as watercress, or which cause pathology in fish. Biological, chemical, and physical snail control techniques are discussed. The most promising molluscucides are copper compounds, Bayluscide, biocidal rubber and molluscicidal bait.

Animals↗
PubMed1970

Incidental aquatic zoonoses.

The following incidental aquatic zoonoses are discussed: eosinophilic mengingitis caused by Angiostrongylus cantonesis, the Guinea worm (Dracunculus medinesis), Anisakis infections, Cryptocotyle lingua, eye fluke (Philophthalmus), the tapeworm Diplogonoporus grandis, and shellfish-borne hepatitis.

Animals↗