Showing papers by "Chung-Ang University published in 1976"

Clinical Trial Of Oxantel Pamoate(Cp-14, 445) On Trichocephalus Trichiurus Infection.

Abstract: The present clinical trial was conducted to determine the efficacy and tolerance of oxantel(CP-14, 445), one of pyrimidine derivative, in the treatment of Trichocephalus trichiurus infection. One hundred eighty two cases who harboured T. trichiurus were treated with oxantel in a single dose of 10 to 25 mg/kg of body weight. For the evaluation, the negative conversion rate and egg reduction rate were calculated before and 22 days after the treatment. The results obtained were as follows: 1. The prevalence rate of T. trichiurus infection in present study was 64.2% by examining 1,536 fecal specimens collected. 2. The overall negative conversion rate was 66.5%, while the highest rate(93.3%) was obtained in the group treated with 20 mg/kg of oxantel (Group III). The lowest rate(56.6%) was observed in Group I (10 mg/kg). 3. The overall egg reduction rate on present study was 90.3%. The highest rate, 100% of egg reduction was also obtained in Group III (20 mg/kg). 4. From the observation of 1,244 expelled worms, it was known that 45.0% of collected worms were expelled on the first of post-treatment day, and male and female worms were about the same in number(1.03 : 1). Average worm burden per capita was 11.1 in this observation. 5. The medication was readily accepted and tolerated by all the treated cases. On the hemograms, urinalysis and liver function tests, no significant differences were noted before and after the drug administration. Side reactions were so mild and transient that none required specific treatment.

[Studies On The Lungfluke, Paragonimus Iloktsuenensis: VI. Effect Of Prednisolone Injection On The Immune Responses Of Albino Rats]

Abstract: In order to understand the effect of prednisolone injection on the immune responses of albino rat against Paragonimus iloktsuenensis infection, the differential leucocyte counts, appearance of immunoblast (large pyroninophilic cell, LPC) in the spleen and lungs in various experimental groups were observed in relation with the growth, maturation and migration sites of this rodent lungfluke. Rats of 3 experimental groups (A series), each group consisted of 5 rats, were infected with 20 metacercariae of P. iloktsuenensis, and they were kept for 3 days(Group I), 3 weeks(Group II), and 4 weeks (Group III) of infection period. The same number of experimental groups, each group of rats received 10 mg/kg dose of prednisolone injection every other day, were also kept and examined in comparison with the former groups. Preparation of peripheral blood smear and collection of worms were completed immediately after the end of infection period, and they were stained with Giemsa or Semichon's acetocarmine. Paraffin sections of the spleen and the lung tissues were stained with hematoxylin-eosin and methyl green pyronin (MGP). Those materials from A and B series of experimental groups were examined under the light microscope, and the results obtained were as follows: 1. On observing differential leucocyte counts of peripheral blood smear, lymphocyte counts were consistently higher than those of uninfected controls in A series of infected groups, while those of B series were consistently low. On the other hand, neutrophil counts of A series showed lower counts than those of B series. In general, fluctuation patterns of both A and B series of experimental groups were almost the same, although lymphocyte and neutrophil counts showed reciprocal relation. The eosinophil counts of both series were negligible, especially in the groups of B series. 2. The counts of LPC in the periarterial lymphatic sheath of the spleen were rapidly increased in the groups of A series, while those of B series were much less than those of A series, and the appearance of considerable LPC in the spleen was also delayed in B series. Furthermore, LPC of peribronchial lymphatic tissue in A series started to increase after the invasion of lungflukes into the lungs, while those of B series were much less due to the inhibited migration of lymphocytes into the lesions. 3. Number, size and maturity of collected worms showed no significant differences between the groups of A and B series, but migration speed of the lungflukes was somewhat accelerated in B series than in A series. In this connection, it was considered that the immune responses of albino rats did not contribute for the complete protection against P. iloktsuenensis, but inhibited the migration of this lungfluke to some extent.

The effects of intravenously infused vasodilators on the renal plasma flow and renal tubules

Abstract: Nitroglycerin increased the renal plasma flow and altered electrolyte excretion. Perhexiline, i. v., caused an increase in sodium, chloride and osmolar clearance without the changes in the renal plasma flow. An elevation of the tubular sodium rejection fraction probably contributed to the increased solute clearance. Isoproterenol caused retention of sodium, chloride potassium, and water without changing the renal plasma flow or the glomerular filtration rate. The tubular rejection fraction of sodium was decreased, indicating that isoproterenol was directly increasing the tubular reabsorption. The renal changes induced by isoproterenol were not altered by pretreatment with perhexiline.