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Biomedical subjects

H Thomé

Publications and source records attributed to H Thomé.

6 recordsLinked to original sources

[Comparison of two methods of age determination in teeth of known age from wild carnivores].

Two age-determining methods were conducted on representatives of known age from the Order Carnivora (4 red foxes, 3 tree martens, 3 stone martens, 2 racoons, 2 badgers, 2 polecat and one otter). Age determination employed with the aid of tooth wear nearly agrees with the real age of the animals. Dating based on the formation of the age-dependent cement zone coincided well with the known ages of the individual specimens. However, in real foxes the figure one must be added to the number of cementum layers counted determining the definitive age of individuals. For representation of the cementum layers transverse sections of the apical part of the tooth root of canini, P2 and P3, stained with methylene blue, should be used. It is important to note that the dentino-cemental line should not be considered when counting the year rings in the cement.

Age Determination by Teeth↗

[Respiratory gas exchange and glucose uptake by the human spleen in situ (author's transl)].

Blood samples were taken from the splenic artery, vein and pulp of 16 patients suffering from lymphoproliferative diseases, essential thrombocytopenia or hereditary spherocytosis and undergoing early splenectomy. The relevant parameters of the respiratory gas exchange as well as glucose and lactate concentrations were determined in these samples. In no case did the thorough examination of the splenic tissue reveal any histopathologic aspects. Taking into account a mean splenic blood flow of 100 ml/100 g/min during anaesthesia, the mean oxygen consumption of the splenic tissue attains 1.1 ml/100 g/min. The glucose uptake and the lactate release show to be 9 mg/100 g/min and 5.2 mg/100 g/min, respectively. Despite high glucose uptake rates and pronounced glycolytic activities there is no evidence of the existence of low pH values, a glucose depletion or hypoxia in the normal spleen. In the normal spleen, therefore, the intrasplenic sequestration of red blood cells cannot be explained by unfavourable metabolic conditions.

Glucose↗