2.Partial Sequence Analysis of Puumala Virus M Segment from Bats in Korea.
Bok Young YUN ; Jeong Joong YOON ; Yun Tae LEE
Journal of the Korean Society of Virology 1999;29(1):23-31
Hantavirus is a genus of the Bunyaviridae family causing two serious diseases, hemorrhagic fever with renal syndrome (HFRS) and hantavirus pulmonary syndrome (HPS). Puumala virus is a member of hantavirus originally found in Europe, and its natural reservoir is Clethrionomys glareolus. It is also associated with the hurnan disease nephropathia epidemica, a milder form of HFRS. To identify the hantaviruses in bats, bats were collected from Jeong-Sun, Won-Joo, Chung-Ju and Hwa-Cheon area in Korea, and nested RT-PCR was performed with serotype specific primer from M segment. Interestingly, Puumala virus was detected in bats (Rhinolophus ferrum-equinum) only from Won-Joo. The 327 bp nested RT-PCR product, was sequenced. The sequence database search indicates that the sequence is homologous to the published sequence of Puumala viruses. The sequence similarities were ranged from 71% to 97%. The highest sequence similarity was 97% with Puumala virus Vranicam strain, and the lowest was 71% with Puumala virus K27 isolate. Puumala virus Vranicam strain was isolated from a bank vole (Clethrionomys glareolus) in Bosnia-Hercegovina. Puumala virus K27 was isolated from human in Russia. This analysis confirms that bats (Rhinolophus ferrum-equinum) in Korea are natural reservoir of Puumala virus.
Arvicolinae
;
Base Sequence
;
Bunyaviridae
;
Chiroptera*
;
Chungcheongbuk-do
;
Europe
;
Hantavirus
;
Hantavirus Pulmonary Syndrome
;
Hemorrhagic Fever with Renal Syndrome
;
Humans
;
Korea*
;
Puumala virus*
;
Russia
;
Sequence Analysis*
3.Effects of sodium vanadate on contractility of vascular smooth muscle.
Young Kwang YOON ; Chang Hyun MOON ; Young Ho LEE ; Bok Soon KANG ; Doo Hee KANG
Korean Circulation Journal 1993;23(1):104-116
The present study was intended to examine the effect of sodium vanadate on contractility of vascular smooth muscle. Aortic ring preparations were made from the rabbit thoracic aorta and endothelial cells were removed from the ring. The contractility of the aortic ring was measured under various conditions. The results were summarized as follows; 1) Sodium vanadate induced contraction of vascular smooth muscle in a dose-dependent fashion. 2) The contractile effects were not blocked by treatments with adrenergic blocking agent(phentolamine) and indomethacin, indicating the direct action of the drug on vascular smooth muscle. 3) In the presence of ouabain, Na(+)-K(+)-ATPase inhibitor, sodium vanadate still increased the contractility of vascular smooth muscle. 4) Treatment with 4.4'-diisothiocyanostilbene-2.2'-disulfonic acid(DIDS) blocked completely the contractile effects of sodium vanadate. 5) In the presence of verapamil, lanthanum and ryanodine, the contractility of the vascular smooth muscle by sodium vanadate was decreased. From the above results. it was suggested that sodium vanadate acts directly on vascular smooth muscle and causes contraction. It was probably due to inhibition of Ca(++)-ATPase in plasma membrane as well as increasing the release of Ca(++) from sarcoplasmic reticulum and Ca(++) influx across the plasma membrane, but not inhibition of Na(+)-K(+)-ATPase.
Aorta, Thoracic
;
Cell Membrane
;
Endothelial Cells
;
Indomethacin
;
Lanthanum
;
Muscle, Smooth, Vascular*
;
Ouabain
;
Ryanodine
;
Sarcoplasmic Reticulum
;
Sodium*
;
Vanadates*
;
Verapamil
4.Perinatal Prognosis of Single Umbilical Artery.
Yoon Ha KIM ; Tae Bok SONG ; Ji Soo BYUN ; Young Youn CHOI ; Ji Young LEE
Korean Journal of Perinatology 1999;10(2):155-160
OBJECTIVE: To evaluate the perinatal prognosis of fetuses with a single umbilical artery. METHODS: From 1992 to 1998, nineteen cases with single umbilical artery(SUA) was observed in 8,704 deliveries at Chonnam University Hospital. RESULTS: Out of nineteen fetuses, thirteen fetuses with single umbilical artery were detected by antenatal ultrasonographic examination and six fetuses were detected after birth. The male to female ratio was 0.9: 1. Congenital malformations were observed in 8 babies(42.1%) and included leg deformity, esophageal atresia, imperforated anus, ventriculomegaly, meningocele, hydronephrosis, ventricular septal defect, joint contracture, cleft lip and palate, toe anomaly, imperforated anus, kyphosis, no urethra and testis, clubfoot, patent ductus arteriosus and rnild mitral regurgitation. Among 10 cases of karyotyping analysis three cases were diagnosed as trisomy 18. Fourteen fetuses(77.8%) showed growth restriction at delivery. Antenatal obstetric complications were hydramnios(n = 3), oligohydramnios(n =2), and severe preeclampsia(n = 3). CONCLUSION: Careful ultrasonographic evaluation for the identification of a SUA is necessary because of its frequent association with congenital anomaly, growth restriction and cytogenetic abnormality.
Anal Canal
;
Chromosome Aberrations
;
Cleft Lip
;
Clubfoot
;
Congenital Abnormalities
;
Contracture
;
Ductus Arteriosus, Patent
;
Esophageal Atresia
;
Female
;
Fetus
;
Heart Septal Defects, Ventricular
;
Humans
;
Hydronephrosis
;
Jeollanam-do
;
Joints
;
Karyotyping
;
Kyphosis
;
Leg
;
Male
;
Meningocele
;
Mitral Valve Insufficiency
;
Palate
;
Parturition
;
Prognosis*
;
Single Umbilical Artery*
;
Testis
;
Toes
;
Trisomy
;
Urethra
5.A case of prenatal ultrasonographic diagnosis of Roberts syndrome.
Yong Hoon CHO ; Young Don YOON ; Tae Bok SONG ; Ji Soo BYUN ; Young Youn CHOI
Korean Journal of Perinatology 1992;3(1):88-94
No abstract available.
Diagnosis*
6.A Case of Pseudo-Meigs' Syndrome.
Tae Hyoung PARK ; Young Bok PARK ; Cheol Seong BAE ; Hae Won YOON ; Myung Soo KANG
Korean Journal of Obstetrics and Gynecology 1999;42(10):2386-2390
Meigs' syndrome is defined as a hydrothorax with ascites and a pelvic tumor, both of which resolve on removal of the tumor. Pseudo-Meigs' syndrome is a variant not possessing the original tumor cell types described by Meigs. Both these syndromes should be considered in otherwise healthy women who present with either new or recurrent hydrothorax and ascites. Pseudo-Meigs' syndrome occurs with the clinical triad of (1)ascites, (2)pleural effusion and (3)Brenner tumors, struma ovarii, benign thecomas, extreme ovarian edema, uterine leiomyomas or other benign pelvic tumors. A case of Pseudo-Meigs' syndrome associated with Brenner tumor is presented with a brief review of literatures.
Ascites
;
Brenner Tumor
;
Edema
;
Female
;
Humans
;
Hydrothorax
;
Leiomyoma
;
Meigs Syndrome
;
Struma Ovarii
;
Thecoma
7.A Follow-up Study of Newborns who had Exchange Blood Transfusion for Hyperbilirubinemia.
Young Soo YOON ; Seung Joon PARK ; Ki Bok KIM
Journal of the Korean Pediatric Society 1981;24(9):826-836
A follow up study was made of 59 cases of neonatal hyperbilirubinemia receving blood exchange transfusion at Kwangju Christian Hospital from early 1976 to early 1979, with the following results. 1. 42patients(71.2%) returned for followup: 12 patients(20.3%) did not return; and 5 patients(8.5%) had died. 2. Of those returning, developmental status was studied by D.D.S.T. 38 patients(90.5%) had normal development , 3(7.1%) were retarded, and 1(2.4%) was questionable. 3. There was no retardation among patients exchange-Transfused at the age of 5 days or less, except for one patients with severe dehydration. All the other retarded or dying patients were over 5 days at the time of exchange transfusion. 4. Serum bilirubin level was above 27 mg% in all retarded patients . Of the 5 patients dying, 3 had serum bilirubin levels of over 40mg%, one with S.B. of 25mg% had BET at 10 days of age, and one died of necrotizing enterocolitis without evidence of kernicterus. 5. In patients with normal development, 23 were male, and 15 were female. All females had normal development, whereas all four babies with retardation were male. 6. Because S.B. remained over 25mg%, three patients underwent a second BET, with good results. 7. ABO incompatibility was etiologically responsible in 23 cases (55.9%), followed by idiopathic hyperbilirubinemia in 16 cases (27.4%), Other causes of hyperbilirubinemia were infection, respiratory distress syndrome, immune neonatal thrombocytopenia, enclosed hemorrhage, small-for-date infant, etc. 8. Mean values with standard errors of pre BET serum bilirubin level were as follows. Normal development group: 28.10.69mg% Retarded development group: 30.21.15mg% There was a tendency toward higher S.B. levels in retarded development group. 9. Nine patients who had early signs of kernicterus on admission, developed normally after BET, but those patients , shown later to be retarded, had only transient improvement of early signs of kernicterus at the time of discharge. 10. Thirty-three patients had siblings, among whom 8 also had history of hyperbilirubinemia or mental retardation due to kernicterus, or had undergone blood exchange transfusion. All of the were cases of ABO incompatibility. 11. Motor distrubance was the predominant handicap in all 4 cases of typical cerebral palsy, but no speech disturbance or hearing loss was seen. Choreoathetosis was evident in two patients over 3 years of age, but it was not possible to classify the cerebral palsy in two patients less than 1 1/2years of age.
Bilirubin
;
Blood Transfusion*
;
Cerebral Palsy
;
Dehydration
;
Enterocolitis, Necrotizing
;
Female
;
Follow-Up Studies*
;
Gwangju
;
Hearing Loss
;
Hemorrhage
;
Humans
;
Hyperbilirubinemia*
;
Hyperbilirubinemia, Neonatal
;
Infant
;
Infant, Newborn*
;
Intellectual Disability
;
Kernicterus
;
Male
;
Siblings
;
Thrombocytopenia, Neonatal Alloimmune
8.Long-term effects of HLA matching on graft survivals in cyclosporine treated living kidney transplants.
Young Suk YOON ; Byung Ki BANG ; Won Il KIM ; Yong Bok KOH
The Journal of the Korean Society for Transplantation 1993;7(1):129-139
No abstract available.
Cyclosporine*
;
Graft Survival*
;
Kidney*
;
Transplants*
9.The effect of HLA mismatching on living kidney graft survivals.
Young Suk YOON ; Byung Kee BANG ; Won Il KIM ; Yong Bok KOH
The Journal of the Korean Society for Transplantation 1991;5(1):35-45
No abstract available.
Graft Survival*
;
Kidney*
;
Transplants*
10.The effect of HLA mismatching on living kidney graft survivals.
Young Suk YOON ; Byung Kee BANG ; Won Il KIM ; Yong Bok KOH
The Journal of the Korean Society for Transplantation 1991;5(1):35-45
No abstract available.
Graft Survival*
;
Kidney*
;
Transplants*