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Biomedical subjects

T Bunnag

Publications and source records attributed to T Bunnag.

27 records · Page 2Linked to original sources
PubMed1977

The predatory activity of Lebistes reticulatus (Peters, 1859) on Schistosoma mansoni miracidia in laboratory experiments.

Laboratory experiments were conducted to evaluate the role of the guppy, Lebistes reticulatus (Peters, 1859), as an active predator on Schistosoma mansoni miracidia. When five guppies were introduced into 3.5 liters of water containing 500 and 1200 miracidia on two corresponding tests, a dramatic reduction in number of miracidia was observed. In one experiment, no miracidia could be found after 60 minutes of exposure. The infection rates of vector snails, Biomphalaria glabrata, exposed to approximately 3000 miracidia in the presence of guppies were also greatly reduced. The results obtained suggest that L. reticulatus is a probable predator of S. mansoni miracidia and may, under field conditions, play an important role as a limiting or interfering factor in the transmission of S. mansoni.

Animals↗
PubMed1977

Nidal delineation of Thailand: an approach to disease ecology in major nidal base regions.

Provisional nidal base regions have veen delineated for Thailand. The nidal base regions so derived were compared by computing the percentages of species common to pairs of provinces (coefficient of community, CC). The results provided a CC matrix and dendrogram showing the relationship between regions, combined with the general geographic and climatologic conditions. Six ecological regions have been designated, of which five are classified as super provinces (Northeast, Central, East, South and Far South), while only one is a subregion (North). Problems of error in the data are discussed and the need for further accurate analysis to further the goal of control of disease.

Animals↗
PubMed1975

Eosinophilic meningitis in Thailand. Clinical studies of 484 typical cases probably caused by Angiostrongylus cantonensis.

Six hundred and forty-six patients with an eosinophilic pleocytosis were studied in Thailand over a 3-year period ending in March 1968. It was possible to segregate the cases into two clinical entities, which were termed typical eosinophilic meningitis and eosinophilic myeloencephalitis respectively. The clinical and laboratory finding of 484 cases of typical eosinophilic meningitis are reported here. The latter entity was generally benign and self-limited with a case mortality ratio of less than 0.5%. Acute severe headache was the most significant symptom. Fever was uncommon and abnormal neurologic findings were absent in 58% of cases. Sixteen percent of patients had visual impairment and 12% had an abnormal fundus. Impairment of the sensorium of a slowly progressive type and weakness of the extremities without localization were noted in 5% and less than 1% of patients, respectively. These signs occurred only in severely ill patients. Involvement of the cranial nerves was found in 17% of patients. Paralysis of the external rectus muscle of the eye and facial paralysis were found in 3% and 4%, respectively. The cerebrospinal fluid was characteristically turbid with a leucocyte count of more than 500 cells per mm3 in 75% of cases. It appeared that specific treatment of the disease was not indicated and that steroids and antibiotics did not have a definite beneficial effect on the course of the illness.

Adolescent↗