In order to observe the complement fixation test and immuno-diffusion test of paragonimiasis, the sera taken at 10 days intervals up to 150 days from cats infected with Paragonimus westermani were examined by the above two immunological methods. The resultant findings were as follows: The complement fixation test showed positive reaction 20 days after the infection with 20 metacercariae, and 40-50 days after the infection with 10 metacercariae. The highest titer was observed 110 days later following the acceleration at 80 days later. In immuno-diffusion test, one are appeared 30 days after the infection with 20 metacercariae, but 60 days after the infection with 10 metacercariae. However, more than two arcs were observed since 70 days after infection. A relatively wide band appeared by the antigens of Fresh worm material and Somatic material. But relatively clear precipitin lines were observed in the diffusion test with V.B.S. antigen, increasing to 3-4 arcs after 110days. In general, complement fixation test showed earlier and higher sensitive reaction than immuno-diffusion test, and was considered to be more valuable method forr immunological diagnosis.
parasitology-helminth-trematoda ; Paragonimus westermani ; immunology ; cat ; complement fixation test ; immuno-diffusion test

Many investigators were interested in the pathogenesis and the relationship between microscopical features and clinical behavior of hydatidiform mole. Trophoblastic cells in the trophoblastic disease were intensively examined histologically, ultrastructurally, immunohistochemically, and with hormone assay method, etc. But ultrastructural study on the stroma of hydatidiform mole was scarcely reported. In this paper, hydatidiform mole was examined at light and electron microscopic levels, with emphasis on the stroma. The results were as follows: 1) Hydropic degeneration of H-mole is more severe in the center of stroma and is not related with the degree of trophoblastic proliferation. Hofbauer cell and vascular structure are extremely rarely observed in the periphery of stroma which has relatively preserved cellular components. 2) Basement membrane is sometimes separated from trophoblastic layer. Degenerated cells in the stroma contain vacuoles, autophagosomes, and lipid droplets. Collagen is abundant in the loose interstitium. Hofbauer cells have no lysosome or phagosome. Vascular lumen is patient and endothelial cells are degenerated. From the above results, H-mole may be produced due to abnormal changes of trophoblasts and stromal changes may be a secondary process, so called autolysis. Hofbauer cells are not engaged in the stromal degeneration and may be different from usual tissue macrophages.

BACKGROUND: Uracil nucleotides are stored in platelets and all other cells, and are released into the extracellular space upon stimulation. They show various biological responses but their actions and mechanism are not well understood. This study was conducted to investigate the effects of uridine 5'-triphosphate(UTP) on vascular tone and to identify the characteristics of their receptors. METHODS: Aortic ring preparation were made from the rat descending thoracic aorta. Endo-thelial cells were preserved or removed by gentle rubbing, The basal tension of aortic ring was lgm and isometric contraction were recorded on polygraph using force transducer. RESULTS: In aortic ring Precontracted by 100nM norepinephrine, UTP induced dual effect with various concentrations. UTP elicited endothelium-dependent relaxation at low concentrations(100nM-10microM), and endothelium-independent contraction at high concentrations(more than 30microM). Among uracil nucleotides, UDP was as much effective as UTP in vascular tone, but UMP and uridine were not. UTP(pA50 6.15) was more potent than ATP(5.17), ITP(4.75) and other nucleotides(TTP, GTP, CTP). At basal tension, UTP induced relaxation at low concentrations and contraction at hige concentrations in endothelium-intact ring. But in endothelium-removed ring, UTP elicited only contraction. Prior treatment of aortic ring with suramin, a non-selective P2-purinoceptor blocker, inhibited UTP-Induced relaxation and contraction. Reactive blue-2, a P2gamma purinoceptor blocker, inhibited relaxation only, but alpha, beta-methylene ATP, a P2x Purinoceptor blocker, enhanced contractile response. ATP inhibited the UPT-induced relaxation, but 2-methylthio ATP did not alter the effects of UTP. It means that UTP and ATP act at the same receptor but 2-methylthio ATP does not. CONCLUSION: These results suggest that UTP-induced relaxation is mediated by nucleotide receptors on endothelium and the contraction is mediated by pyrimidinoceptors on vascular smooth muscle.
Adenosine Triphosphate ; Animals ; Aorta ; Aorta, Thoracic* ; Endothelium ; Extracellular Space ; Guanosine Triphosphate ; Isometric Contraction ; Muscle, Smooth, Vascular ; Norepinephrine ; Rats* ; Receptors, Purinergic ; Receptors, Purinergic P2X ; Relaxation ; Suramin ; Transducers ; Uracil Nucleotides ; Uridine Diphosphate ; Uridine Monophosphate ; Uridine Triphosphate ; Uridine*

BACKGROUND: Adenosine 5'-tetraphosphate(ATPP), an endogenous nucleotide, is stored in cells and released into the extracellular space upon stimulation. Some of the biological responses to ATPP were reported, but characteristics of its receptor were not well known. Present study was conducted to investigate the effects of ATPP on mechanical contractility, resting membrane potential and action potential of rat left atrium. METHODS: Left atrium was isolated from Sprague-Dawley rat. Mechanical contraction induced by electrical field stimulation(EFS) was recorded on polygraph using force transducer. With glass microelectrodes(10 MOmega), potential difference across the membrane was measured and recorded on an oscilloscope and a polygraph. RESULTS: ATPP reduced the left atrial contractility with concentration-dependent manner. ATPP also hyperpolarized the resting membrane potential and decreased the action potential duration of the left atrial cell. Nucleotides other than ATPP, such as ATP, ADP, AMP and adenosine, have the same effect as ATPP. However, there is no difference among the nucleotides. Prior treatment of DPCPX, a P1-purinoceptor blocker, inhibited the ATPP-induced negative inotropism and changes of the membrane potential. But suramin, a nonselective P2-purinoceptor blocker, did not alter the effects of ATPP. alpha, beta methylene ADP and adenosine deaminase, which attenuates hydrolysis of adenine nucleotides and inactivates adenosine respectively, did not influence the effects of adenine nucleotides except for adenosine. CONCLUSION: ATPP reduced the mechanical contractility, hyperpolarized the resting membrance potential and decreased duration of action potential of rat left atrium. These effects were induced by ATPP directly, not by adenosine from hydrolyzed ATPP.
Action Potentials ; Adenine Nucleotides ; Adenosine Deaminase ; Adenosine Diphosphate ; Adenosine Triphosphate ; Adenosine* ; Animals ; Extracellular Space ; Glass ; Heart Atria ; Hydrolysis ; Membrane Potentials ; Membranes ; Muscle Contraction ; Nucleotides ; Rats ; Rats, Sprague-Dawley ; Receptors, Purinergic ; Suramin ; Transducers

It appears that frequency of fractures of the aceta ulum is increasing with the number of automobiles on our roads and when they occur they seem to pose difficulties of management. Because, the anatomy of this region is complicated, making surgical approaches difficult. Second, the patients often have major associated injuries, making early operative treatment hazardous. Third, the fractures are often severly comminuted, leading many surgeons to beleave that operative reduction is impossible. Finally, and unfortunately, the fractures are often missed. The aim of treatment must be to restore the fractured acetabulum to its normal anatomy followed by early motion to promote healing and restore function. Undisplaced acetabular fractures have a good prosis with conservative treatment but patients with displaced fractures of the acetabulum not reduced by manipulation and traction should be considered candidates for open reduction. The author experienced 72 cases of acetabular fracture patients who were admitted to the department of Orthopaedic Surgery of Catholic Medical College and Center from January 1979 to August 1983. The results of 48 patients who were followed up over 6 months period were as follows; l. Among 72 cases(44 were male and 28 were female), the most common causes of acetabular fracture was pedestrian struck by car. 2. 56 were treated conservatively and 16 were treated surgically. The result were as follows; Excellent-15(31%), Good-23(48%), Fair-8(17%), Poor-2(4%). 3. 72 cases were classified by Letournel classification. The most common type was posterior wall fracture(14 cases), and second most was T-shaped fracture(13 cases). 4. If the grossly displaced fragments are present they should be reduced and fixed surgically if surgical approach can be done. 5. It is essential to understand the pathologic anatomy of the acetabulum in order to approach the acetabular fracture sefely and with maximum ease.
Acetabulum ; Automobiles ; Classification ; Clinical Study ; Humans ; Male ; Surgeons ; Traction

No abstract available.
Neurilemmoma*

OBJECTIVE: To assess the effect of recombinant human leukemia inhibitory factor on in vitro development of 1-cell ICR mouse embryo. MATERIALS AND METHOD: ICR mice were superovulated with PMSG/hCG and 1-cell stage mouse embryos were recruited. 1-cell mouse embryo were cocultured on human oviductal cells in a CO2 incubator (coculture group) and were cultured on 0.4% BSA+HTF media (control group). And anti-hLIF Ab was added the cocultured group in a different concentration (1pg, 10pg, 100pg, 1ng) and developmental rate was compaired to the control group, and rhLIF was added to the preincubated 0.4% BSA+HTF media in a different concentration (2000U, 1000U, 100U, 10U) and its developmental rate was compaired to group which was cultured on 0.4% BSA+HTF media only. RESULT: 1. The cleavage rate of 2-cell mouse embryo co-cultured with human tubal epithelial cell was significantly higher than that of cultured with media alone (HTF with 0.4% BSA) (p<0.05). 2. When LIF antibody was added to the medium with human tubal epitherlial cell, the mouse embryo could not cleave more than 2-cell in 1 ng of LIF antibody, and less than 1 ng, the cleavage rate was lower than cultured without LIF antibody group(p<0.05). 3. Two cell blocked ICR mouse embryos were developed into four cells under LIF(p<0.05), but no further development was observed. CONCLUSIONS: These results shows that LIF enhances the development of preimplantation embryo, and when rhLIF is applicated in vitro, it has positive effects on the development of early mouse embryo and can help overcoming the two-cell block.
Animals ; Blastocyst* ; Coculture Techniques* ; Embryonic Structures ; Epithelial Cells ; Humans ; Incubators ; Leukemia Inhibitory Factor* ; Leukemia* ; Mice ; Mice, Inbred ICR ; Oviducts

No abstract available.
Aged* ; Female ; Humans ; Sarcoma, Kaposi*

No abstract available.
Aged* ; Female ; Humans ; Sarcoma, Kaposi*

The oncogenes, which have been detected in various human solid tumors, transform culture cells, and the level of m-RNA specific for an oncogene increases in the cellular extract of the tumor cells. These findings suggested that oncogene expression was closely related with carcinogenesis. Recently, oncogen products were considered as tumor markers, but it was not confirmed that the relationship between quantitative change of oncogene product and malignant potential of a neoplasm. To evaluate the relationship between the quantitative change of oncogene product and malignant potential, immunohistochemical staining for the ras and myc oncogene products was performed in the sections of papilloma and transitional cell carcinoma of urinary bladder. 1) Positive reaction of c-ras oncogene product was noted along the cell membrane and in the cytoplasm, and c-myc oncogene product in the nucleus, and along the unclear membrane and cell membrane. 2) Tissue expression of c-ras oncogene was homogeneous and strong in the transitional cell carcinoma rather than in papilloma. 3) The ratio of the positive cells with c-ras oncogene product was 35.1% in the papilloma, 79.4% in the grade I, 81.9% in the grade II, 87.6%, in the grade III of transitional cell carcinoma of the urinary bladder. There was a tendency for the ratio to increase with the degree of histological grading. 4) By the immunoperoxidase staining of c-myc oncogene product, the number of the cells showing positive nuclear staining incrased with the tumor grading.
Humans ; Tumor Markers, Biological ; Carcinogens