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Biomedical subjects

J Dauth

Publications and source records attributed to J Dauth.

36 records · Page 2Linked to original sources
PubMed1988

Blood lead concentrations in hippopotami (Hippopotamus amphibius) in the Kruger National Park.

Venous whole-blood samples for the determination of lead concentrations were obtained from hippopotami (Hippopotamus amphibius) (n = 26) during a population control programme on the banks of the Sabie River. A mean blood lead concentration of 26.3 micrograms l-1 was lower than the mean concentration of 34.0 micrograms l-1 cited for a group of young people living in a remote area where lead pollution was considered to be negligible. These concentrations indicate that lead pollution in this area of the Kruger National Park is at present low.

Animals↗
PubMed1988

Parotid salivary gland of the African elephant (Loxodonta africana): structure and composition of saliva.

Specimens from parotid salivary glands of full-grown elephant (Loxodonta africana) a (n=6) and saliva aspirated from their main excretory ducts were examined macroscopically and microscopically and analyzed biochemically. The composition of the saliva was compared to that of the blood. The parotids (n=12; mean = 7.4 kg) are homocrine and of a seromucous nature. Myoepithelial cells are well-developed along intercalated ducts and their processes extend to proximal portions of allied acini. The saliva is hypotonic and contains relatively low concentrations of sodium and glucose and high concentrations of potassium, urea, calcium and phosphorus. Absence of detectable levels of alpha-amylase negates a digestive role and the voluminous secrete evidently aids swallowing by moisturising and lubricating the large mass of ingested leaves, grass and bark.

Animals↗
PubMed1987

Development of resistance in rabbits to immature stages of the Ixodid tick Rhipicephalus appendiculatus.

A study of acquired resistance in rabbits to larvae and nymphs of Rhipicephalus appendiculatus Neumann showed a positive correlation between the levels of gamma globulin in the serum and the resistance developed by the host. A negative correlation between the weight of engorged ticks and gamma globulin levels was also demonstrated during this study. Repeated infestations with ticks evoked a typical antibody response to antigenic challenge. The levels of gamma globulin stabilized after three infestations and no further decrease in the weight of ticks was observed. The mechanism of the acquisition of resistance by the rabbits, the production of antibodies and the involvement of complement are discussed.

Animals↗
PubMed1987

Multiple myeloma: a study of 10 cases.

The clinical, radiographical, biochemical, microscopical and ultrastructural features of 10 cases of multiple myeloma were studied. The skull and jaw regions were frequently involved by the disease and although the diagnosis remains multidisciplinary, microscopical parameters differentiating a myelomatous bone marrow infiltrate from a reactive plasmacytosis are discussed. Biochemical and microscopical factors influencing the prognosis are highlighted and significant ultrastructural findings include erythrophagocytosis, cytoplasmic nuclear asynchrony of plasmablasts and intranuclear viral like inclusions.

Adult↗
PubMed1987

Blood chemical and electrolyte concentrations in the mountain reedbuck Redunca fulvorufula.

Concentrations of sodium, potassium, chloride, inorganic phosphorus, total magnesium, total calcium, iron, urea, creatinine, total protein, albumin, total bilirubin, alkaline phosphatase (ALP), alanine transaminase (ALT), lactate dehydrogenase (LD), creatine kinase (CK), gamma-glutamyltransferase (GGT) and aspartate transaminase (AST) were determined in serum specimens collected from 53 free-ranging mountain reedbuck (Redunca fulvorufula) during live capture using nets. Considerable variations in the concentrations of the enzymes ALP, LDH, CK, GGT and AST were found as well as in the concentrations of creatinine, bilirubin and iron. This wide variation in results seriously questions the usefulness of similar blood investigations on heterogenous groups of mechanically restrained animals.

Animals↗
PubMed1987

Blood chemical parameters in the warthog Phacochoerus aethiopicus.

Concentrations of sodium, potassium, chloride, inorganic phosphorus, total calcium, total magnesium, albumin, total protein, cholesterol, urea, creatinine, cortisol as well as the activities of alkaline phosphatase, alanine transaminase, aspartate transaminase, gamma-glutamyltransferase, creatine kinase and lactate dehydrogenase were determined in serum specimens collected from 100 free-ranging warthogs Phacochoerus aethiopicus within five minutes after they were killed with a shotgun. Average concentrations for the following chemical constituents were found: sodium (145 mmol l-1), potassium (8.6 mmol l-1), chloride (102.5 mmol l-1), phosphorus (2.31 mmol l-1), calcium (2.93 mmol l-1), magnesium (1.23 mmol l-1), albumin (26.4 g l-1), serum proteins (62.2 g l-1), cholesterol (1.82 mmol l-1) and urea (8.74 mmol l-1). The cortisol concentrations ranged from 55-340 nmol l-1 (n = 30). Wide variations were recorded in the concentration of creatinine as well as in the activities of the various enzymes.

Animals↗
PubMed1987

Serum biochemical and haematological parameters in the Cape vulture Gyps coprotheres.

Serum concentrations of total proteins, albumin, glucose, alkaline phosphatase, alanine transaminase, aspartate transaminase, gamma-glutamyltransferase, lactate dehydrogenase, creatine kinase, urea, creatinine, total calcium, ionised calcium, total magnesium, sodium chloride, potassium, phosphorus, cortisol, parathormone, 25-hydroxy-VitD3 and insulin as well as the results of haematological investigations in Cape vultures (n = 10) are presented.

Animals↗
PubMed1986

Multiple myeloma presenting with extensive oral and perioral amyloidosis.

The case of a young adult patient, with a kappa-light-chain-secreting multiple myeloma and extensive oral and salivary gland amyloid deposits, is presented. This case illustrates the necessity of a multidisciplinary approach using biochemical, radiographic, and relevant histologic investigations in the diagnosis of multiple myeloma. Factors influencing the prognosis of this neoplastic condition are discussed. Microscopic examination of the oral amyloid deposits supports the suggested central role played by the macrophage in amyloidogenesis.

Amyloidosis↗
PubMed1985

IgD multiple myeloma. A case report.

A patient with a fracture of the left femur was investigated for suspected multiple myeloma. Serum total proteins, protein electrophoresis, and immunoglobulin G, A and M levels were within normal limits. Bence Jones proteinuria of the lambda type was present. Subsequent investigations revealed the presence of IgD myeloma.

Aged↗
PubMed1985

Blood chemical parameters in free-living white rhinoceros Ceratotherium simum.

Serum concentrations of sodium, potassium, chloride, total protein, albumin, aspartate transaminase, creatine kinase, lactate dehydrogenase, gamma-glutamyltranspeptidase, alkaline phosphatase and alanine transaminase were determined in free-living white rhinoceroses Ceratotherium simum (n = 20). Single serum cortisol (n = 20), oestradiol-17 Beta (n = 14) and progesterone (n = 14) concentrations are also presented. Low serum sodium (129.6 +/- 4.2 mmol/l) chloride (94.2 +/- 3.05 mmol/l) and albumin (26.1 +/- 3.71 mmol/l) as well as high globulin (alpha 1, alpha 2, beta and gamma) concentrations were outstanding features.

Animals↗
PubMed1985

Blood chemical and electrolyte concentrations in the ostrich Struthio camelus.

Serum levels of sodium, potassium, chloride, phosphorus, iron, total magnesium, total calcium, alkaline phosphatase, alanine transaminase, lactate dehydrogenase, creatine kinase, gamma-glutamyltransferase, aspartate transaminase, urea, creatinine, total protein, albumin and plasma glucose were determined in 49 ostriches (Struthio camelus) kept under semi-extensive conditions.

Animals↗
PubMed1985

Blood chemical parameters in shot Cape Mountain Zebra Equus zebra zebra.

Serum levels of cortisol, sodium, potassium, chloride, urea, creatinine, total protein, albumin, phosphorus, aspartate transaminase, creatine kinase, lactate dehydrogenase, iron, total magnesium, total calcium, alkaline phosphatase, alanine transaminase and gamma-glutamyltranspeptidase were determined in 11 short Cape Mountain Zebra Equus zebra zebra.

Animals↗
PubMed1984

Unusual presentation of multiple myeloma. A report of 2 cases.

The diagnosis of multiple myeloma (overt plasma cell dyscrasia) is usually not considered in patients under 30 years of age. Furthermore, multiple myeloma with coexistent megaloblastic and iron deficiency anaemia is very uncommon. Within 6 months we encountered 2 patients under 30 years of age who had multiple myeloma, one with advanced secondary amyloidosis and the other with severe megaloblastic and iron deficiency anaemia.

Adult↗
PubMed1984

Biclonal gammopathy. A case report.

The presence of two or more monoclonal proteins in serum due to the malignant proliferation of more than one clone of B lymphocytes is uncommon. A patient with raised levels of both immunoglobulin G and M is presented and some clinical and laboratory features are shown.

Blood Proteins↗
PubMed1984

Ionized calcium versus total calcium in dairy cows.

Ionized and total calcium levels were determined in 29 Friesian and 5 Drakensberger cows. One Friesian cow had parturient paresis and specimens were taken before and after treatment. It is suggested that due to the easy reliable way in which ionized calcium levels can now be determined this investigation should replace total calcium estimations in dairy cows presenting with parturient paresis. Ionized calcium levels serve as a valuable diagnostic aid but are also important to assess the effectivity of treatment for this condition.

Animals↗
PubMed1982

Circulating immunoglobulin levels in patients with pulmonary tuberculosis with special reference to IgE.

This study has demonstrated high levels of circulating IgE in a group of patients with pulmonary tuberculosis compared with a control group. There was little or no specific binding of circulating IgE to M. tuberculosis but when the serum was heated to 56 degrees C for 1 hour 5/20 of the patients investigated showed appreciable levels of binding. It is suggested that the IgE which binds to M. tuberculosis exists in a heat-labile complex with an anti IgE antibody and that this complex formation may represent a protective host mechanism.

Adult↗