Japanese Journal of Tropical Medicine and Hygiene
Online ISSN : 2186-1811
Print ISSN : 0304-2146
ISSN-L : 0304-2146
Volume 11, Issue 1
Displaying 1-6 of 6 articles from this issue
  • SHIGEHISA HABE
    1983 Volume 11 Issue 1 Pages 1-6
    Published: March 15, 1983
    Released on J-STAGE: May 20, 2011
    JOURNAL FREE ACCESS
    The possibility of albino rats as the hosts of 3 species of the lung-flukes is experimentally detected. Rats were each orally infected with 10 to 20 metacercariae of the bisexual type of P. westermani, P. miyazakii and P. mexicanus and were necropsied 60 to 150 days after infection. All of the worms of P. westermani and a part of P. miyazakii (21 %) and P. mexicanus (74%) were found in the muscles of the rats. They were morphologically similar to excysted metacercariae and contained many excretory granules in their bladder. Worms of the youngest stage selected from them were fed to dogs and cat and 37.3-66.7% of worms were recovered from the animals after 103-202 days. These worms were parasitic within cysts in the lungs and most of them were fully mature. Thus, it was revealed that the bisexual type of P. westermani, P. miyazakii and P. mexicanus also take the rat as their paratenic hosts.
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  • 1. Localization of Acid Phosphatase Activity in Developing Larvae in Mosquito (Aedes aegypti)
    EISAKU KIMURA, YASUO NAKAJIMA, YOSHIKI AOKI
    1983 Volume 11 Issue 1 Pages 7-15
    Published: March 15, 1983
    Released on J-STAGE: May 20, 2011
    JOURNAL FREE ACCESS
    Histochemical localization of acid phosphatase was reported on the microfilariae isolated from the peripheral blood of the dog and their developing larvae in mosquitoes in comparison with the localization in those from the jird's peritoneal cavity and their larvae. Whole body of microfilariae stained red with dark red excretory vesicle and anal vesicle. The sheaths were negative in those from the dog, while positive in most microfilariae from the jird. During the first two days after the intake unstained larvae were frequently found in the mosquitoes fed jird microfilariae in contrast to those fed on the dog. From the third day on, positive developing intestine was observed. After the first molt the esophagus appeared as a red double line. On the 7th day strong activity was found at the esophagus, intestine, developing anus and amphids, while the nerve ring was negative. Positive reaction was detected at the hypodermis and anus of infective larvae.
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  • HIROJI KANBARA, W. PANJAITAN
    1983 Volume 11 Issue 1 Pages 17-24
    Published: March 15, 1983
    Released on J-STAGE: May 20, 2011
    JOURNAL FREE ACCESS
    The blood and spleen examination for malaria was carried out in six villages (Desa) of Asahan district (Kabupaten), North Sumatra from February 1980 to March 1981. In general, parasite rate proved to be low (average 2.0%) in this area and both species of Plasmodium vivax and P. falciparum were detected. Besides this, interesting aspects of malaria endemic in this area were revealed. First, positive cases were found only in four villages bordering the sea, and, again, malaria endemic area was restricted to a few subvillages (Lorong) close to the coast in each village. Secondly the regular survey perfomed in Lorong I and II of Desa Perupuk, one of six villages, at intervals of a month showed that the active transmission of malaria took place during the dry season from January to July but the transmission became inactive during rainy season from August to December. The role of Anopheles sundaicus, which was determined as a main vector, in the limitation of endemic area and in the seasonal fluctuation of transmission was discussed.
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  • YOSHIHISA HASHIGUCHI, MASATO KAWABATA, MASATOSHI TAKAOKA, OTTO FLORESC
    1983 Volume 11 Issue 1 Pages 25-33
    Published: March 15, 1983
    Released on J-STAGE: May 20, 2011
    JOURNAL FREE ACCESS
    The present work was designed to assess the relationship between the hourly O. volvulus microfilarial density (mfd) in patient's skin and the hourly microfilarial intake by S. ochraceum. From two experiments employing 14 patients, it is suggested that there may be a little elevation of mfd during the period from evening through mid-night, but not pronounced. The microfilarial intake by the fly revealed two peaks, one in the morning and the other in the afternoon. Thus, the pattern of microfilarial intake did not correlate with the present diurnal pattern of mfd. The hourly intake was briefly discussed in relation to the biting activity and the parous rates of S. ochraceum. This report is the first case dealing with the hourly microfilarial intake by the black fly. Further such information would be required for a better understanding of the transmission mechanism of onchocerciasis in given endemic areas.
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  • YOSHIHIRO SEKIBA, SHIGETSUNE KOJIMA, NOBUAKI KADOI, SATORU TANUMA, NOR ...
    1983 Volume 11 Issue 1 Pages 35-39
    Published: March 15, 1983
    Released on J-STAGE: May 20, 2011
    JOURNAL FREE ACCESS
    A lowered T cell percentage and a raised Tr cell percentage during the acutely ill period in Protein Calorie Malnutrition were observed. These values generally returned to normal after treatment. It is suggested that T cell immunodeficiency in Protein Calorie Malnutrition could be due to the alterations of T cell subsets coming from an increase of Tγ cells.
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  • 1983 Volume 11 Issue 1 Pages 41-54
    Published: March 15, 1983
    Released on J-STAGE: May 20, 2011
    JOURNAL FREE ACCESS
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