2.An Experimental Study of Vibrio vulnificus Infection in Mice.
Korean Journal of Pathology 1991;25(2):123-146
An experimental of Vibrio vulnificus infection has been performed with the intravenous, subcutaneous and oral inoculation of Vibrio vulnificus into ICR mice. The results are as follows: 1) The LD50 of the intravenous, subcutaneous and oral inoculation of Vibrio vulnificus were 1.6x10(7) cells/ml, 4.0x10(7) cells/ml, and 2.5x10(9) cells/ml, respectively. 2) In the experimental group without treatment with CC14, the survival rates for intravenous inoculation were 100% (1/2 LD50), 39.1% (LD50), and 8.3% (2 LD50). The survival rates for subcutaneous inoculation groups were 100% (1/2 LD50), 46.9% (LD50), and 18.8% (2 LD50). And the survival rates for oral inoculation groups were 100% (1/2 LD50), 53.1% (LD50), and 43.8% (2 LD50). 3) In those treated with CC14 0.05 ml, the survival rates for intravenous inoculation groups were 43.8% (1/2 LD50), 29.1% (LD50), 0% (2 LD50). The survival rates for subcutaneous inoculation groups were 59.4% (1/2 LD50), 40.6% (LD50), and 9.4% (2 LD50). The survival rates for oral inoculation groups were 68.8% (1/2 LD50), 46.9% (LD50), and 18.8% (2 LD50). In those treated with CC14 0.1 ml, the survival rates for intravenous inoculation groups were 25.0% (1/2 LD50), 10.4% (LD50), and 0% (2 LD50). The survival rates for subcutaneous inoculation groups were 43.8% (1/2 LD50), 21.9% (LD50), 0% (2 LD50). The survival rates for oral inoculation groups were 50.0% (1/2 LD50), 37.5% (LD50), and 0% (2 LD50). 4) Liver, lungs, meninges and brain, kidneys, heart, gastrointestinal tract and spleen showed septic inflammatory findings. Their degree of inflammation were different according to the severity of hepatic damage and the inoculum size.
Mice
;
Animals
3.Change in Plasma Homocysteine Concentration during the Recovery Phase of Renal Transplantation.
Jin Ho JEON ; Dong Ho YANG ; Sea Yong HONG
Korean Journal of Nephrology 1999;18(3):476-482
A prospective study of vitamin B6, B12, folate, and homocysteine levels was carried out in 7 kidney transplant(KT) recipients. The first sample for the basal level was drawn on the morning of the KT day before the start of cyclosporine injection. Thereafter, serial blood samples were taken every day until the serum creatinine level decreased below 1.5 mg/dl and then every 2 or 3days until discharge. The serum creatinine level decreased to below 1.5 mg/dl within 3days except for cases 4 and 6. The homocysteine levels decreased markedly in synchronisation with serum creatinine levels increased during the first 7days and then declined together with serum creatinine levels but went up again after a few days. The levels of B6, and vitamin B12 do not continue to decrease after the levels of serum creatinine have decreased to 1.5mg/dl, while homocysteine levels go up progressively. In conclusion, contrary to our expectation, the level of homocysteine rebounds a few days after KT following a transient decline. A deficiency of folic acid, vitamin B6 and vitamin B12 does not seem to cause hyperhomocysteinemia in KT recipients. It is necessary to pay attention to hyperhomocysteinemia in KT recipients, especially when the recipients have an atherosclerosis-related complication.
Creatinine
;
Cyclosporine
;
Folic Acid
;
Homocysteine*
;
Hyperhomocysteinemia
;
Kidney
;
Kidney Transplantation*
;
Plasma*
;
Prospective Studies
;
Vitamin B 12
;
Vitamin B 6
4.The impact of genetic counseling on performance of prenatalcytogenetic diagnosis.
Sei Kwang KIM ; Yeoung Ho YANG ; Chan Ho SONG
Korean Journal of Obstetrics and Gynecology 1992;35(12):1742-1748
No abstract available.
Diagnosis*
;
Genetic Counseling*
5.Clinical and cytogenetic study of congenital anomalies.
Young Ho YANG ; In Sook SOHN ; Chan Ho SONG
Korean Journal of Obstetrics and Gynecology 1993;36(7):2294-2303
No abstract available.
Cytogenetics*
6.Clinical and cytogenetic study of congenital anomalies.
Young Ho YANG ; In Sook SOHN ; Chan Ho SONG
Korean Journal of Obstetrics and Gynecology 1993;36(7):2294-2303
No abstract available.
Cytogenetics*
7.A Clinicopathologic Analysis of Pseudomyxoma Peritonei Originated from Mucinous Ovarian Tumors.
Ji Hyun PARK ; Young Ho YANG ; Jae Ho HAN
Korean Journal of Obstetrics and Gynecology 1999;42(8):1808-1814
OBJECTIVE: The aims of this study were to analyze the natural history of patients with pseudomyxoma peritonei originated from mucinous ovarian tumor, evaluate clinical and pathologic variables, and review our experience with available therapeutic modalities. METHODS: Six patients were treated for pseudomyxoma peritonei originating from mucinous ovarian tumor at Severance Hospital between 1990 and 1998. The data were collected retrospectively and all charts were reviewed RESULTS: The mean age at diagnosis was 51 years, and most common symptoms were abdominal distension. Pseudomyxoma peritonei was found in association with five mucinous ovarian tumors of borderline malignancy, and one ovarian mucinous adenoma. All patients underwent surgical staging and cytoreduction, three patients received postoperative adjuvant chemotherapy and, of these, two developed recurrence. With respect to survival, all patients were alive, four were alive and free of disease, two were alive with disease at the end point of study. CONCLUSION: Pseudomyxoma peritonei is commonly associated with borderline mucinous ovarian tumors, and is a frequently relapsing and protracted disease. But aggressive and repeated debulking surgery is recommended for long survival.
Adenoma
;
Chemotherapy, Adjuvant
;
Diagnosis
;
Humans
;
Mucins*
;
Natural History
;
Pseudomyxoma Peritonei*
;
Recurrence
;
Retrospective Studies
8.A Clinical Study of Open Fractures of Tibia
Dae Yong HAN ; Ho Jung KANG ; Yang Ho KANG
The Journal of the Korean Orthopaedic Association 1990;25(3):676-683
Open fracture characteristically has higher chances of infection and sof tissue damage in comparison with closed fracture. In spite of the development of operation methods and antibiotics, complications such as infection, nonunion, delayed union, and joint stiffness are continuously confronted as problems in the field of orthopedics. Different methods of treatment have been advocated as regards the care of the open wound and the method of stabilization of the fracture fragments. Therefore a comparative analysis of the type of open fracture and the bone union time according to the initial treatment methods was made from 47 cases over the age of 20, who were followed up until bone union developed among the inpatients who were treated for open fracture of tibia in the period of 7 years from January, 1982 to December, 1988, and the results are as follows: 1. The highest incidence of fractures was encountered in 3rd decade(34%) and male to female ratio was 6:l. 2. The most common cause of fractures was traffic accident(76.6%). 3. The most common level of fracture was in mid one-third and the bone union time was longest in mid one-third. 4. The bone union time was longer, and the rate of complication was greater in order of type 1, 2 & 3 according to Gustilo's classification. 5. The good result was obtained in type 1 fractures, by using the closed reduction & cast immobilization and pin & plaster method; in type 2, the bone union time was shortest in the cases of pin & plater method; in type 3, the bone union time was shortest in the cases of closed reduction or open, reduction & external fixation. 6. Bone union was obtained in all cases of delayed union and nonunion and the bone union time was shortest in cases treated with plate & bone graft.
Anti-Bacterial Agents
;
Classification
;
Clinical Study
;
Female
;
Fractures, Closed
;
Fractures, Open
;
Humans
;
Immobilization
;
Incidence
;
Inpatients
;
Joints
;
Male
;
Methods
;
Orthopedics
;
Tibia
;
Transplants
;
Wounds and Injuries
9.Study for the Effects of the Polyvalent Pseudomonas Vaccine of the Experimental Pseudomonas sepsis.
Korean Journal of Pathology 1986;20(3):263-276
Recently there is increasing tendency of the nosocomial infection, and Pseudomonas aeruginosa is one of the most important and common pathogens causing hospital opportunistic infections with rapid emergence of resistant strain especially in immunologically compromised patients. An experimental study for the effects of polyvalent Pseudomonas vaccine was performed in an animal model of Pseudomonas sepsis on a survival rates and histopathological points of view-using ICR inbred mice. The vaccine was prepared with heat killed whole cells of the 10 representative serotypes of Pseudomonas aeruginosa, which were isolated from the Department of Microbiology, College of Medicine, Kyung Hee University and Seoul National University, and they were devided into two polyvalent vaccine groups. The animal model of the Pseudomonas sepsis was deveoped by intravenous inoculation of Pseudomonas aeruginosa (serotype F, inoculum size 100 microliter, 109 cells/ml), immediately after cutaneous burns. The results were as follows. 1) The survival rate of the immune mice was 100% and that of non-immune mice was 60%. 2) The histologic findings of lung of the non-immune mice were severe congestion (18/18 mice), hemorrhage (18/18 mice), emphysematous change (18/18 mice), thrombosis (9/18 mice), infarction (9/18 mice) and inflammation (6/18 mice) and those of the immune mice were only congestion (6/20 mice) and focal emphysematous change (2/20) from the 3 day experimental group. 3) The histologic findings of the liver in the non-immune mice were severe congestion, Kupffer cell mobilization, focal necrosis, & portal inflammation in most of them, and from 7 day experimental group there were noted infiltrations of lagre histiocytic cells in sinusoids, and those in the immune mice were only reactive change of varying degree. 4) The histologic findings of the spleen in the non-immune mice were severe reactive hyperplasia in all and ischemic necrosis in about half of them, and those in the immune mice were only reactive change. 5) The histologic findings of the heart in the non-immune mice were severe congestion and inflammation in most and in the immune mice were only occasional nonspecific congestion. 6) The histologic findings of the kidney in the non-immune mice were severe congestion in all, interstitial inflammation, acute tubular necrosis and cortical necrosis in about half of them, and those in the immune mice were only mild congestion. With the above results, we can suspect there is a significant protective effects of the polyvalent pseudomonas vaccine on the pseudomonas sepsis in ICR mice.
Mice
;
Animals
10.A study on the stress analysis of three root-form implants with finite element analysis.
The Journal of Korean Academy of Prosthodontics 1993;31(1):129-150
No abstract available.
Finite Element Analysis*