1.Evaluation of the Use of Rh(D)'Control Test in Rh(D) Typing.
Yoon Jeong CHO ; Jong Seong CHOI
Korean Journal of Blood Transfusion 1996;7(1):23-26
Clinically, the Rh blood group system is important since Rh antibodies are readily induced by transfusion or pregnancy in individuals negative for the antigert and may cause hemolytic reactions or hemolytic disease of the newborn. Since the D antigert is strongly immunogenic, donors and patients are routinely typed for D status and patients are generally given D compatible blood. But under several circumstances such as spontaneous agglutination of red blood cells coated with immunoglobulin, antisera with additives may cause false positive results in test using high-protein reagents. And facton in the patient' s own serum may also affect the test, since unwashed red blood cells suspended in their own serum or plasma are frequently tested. Therefore, manufacturers and American Association of Blood Banks(AABB) recommend that the Rh(D) control test with Rh(D) control reagent which contains the same additive present in high-protein anti-D except for the anti-D. This study was undertaken to evaluate the usefss of the Rh(D) control test in Korea where Rh(D) negative population is small. Red blood cells from 1115 in-patients and 468 out-patients at Korea University Medical Center were employed in Rh(D) typing and Rh(D) control test in parellel. 1580 cases are Rh(D) positive and 3 cases were Rh(D) negative. No agglutination was observed with Rh(D) control test. Though AABB and manufacturers recommended that the Rh(D) control test should be done in parellel with Rh(D) typing test, the authers concluded that there were no need to run the Rh(D) control test in Korea.
Academic Medical Centers
;
Agglutination
;
Antibodies
;
Erythrocytes
;
Humans
;
Immune Sera
;
Immunoglobulins
;
Indicators and Reagents
;
Infant, Newborn
;
Korea
;
Outpatients
;
Plasma
;
Pregnancy
;
Tissue Donors
2.Early Clinical Outcome and Complications of Tension Free Vaginal Tape Procedure in Stress Incontinent Women.
Seong Kyoo CHOI ; Jong Min YUN ; You Sik LEE
Korean Journal of Urology 2001;42(6):589-593
PURPOSE: The aim of the study was to evaluate the clinical outcome and complications of tension free vaginal tape (TVT) procedure for the surgical treatment of female stress urinary incontinence. MATERIALS AND METHODS: Between April 1999 and May 2000, 41 women with stress urinary incontinence underwent TVT procedure. Preoperative evaluation included questionnaires study, physical examination, one hour pad test and urodynamic study. Postoperative clinical outcome, patient's satisfaction and complications were checked after 3-months. RESULTS: The mean age of patients was 51.6 years (range 40-76) and mean hospital stay 2.1 days (range 1-10). The mean follow-up period was 9.9 months (range 3-15). Thirty six patients (87.8%) were cured, 2 patients (4.9%) were improved. Two of 3 patients with failed operation who developed postoperative urge incontinence had grade III cystocele. Five bladder perforations and 1 obturator nerve injury occurred. The abdominal leak point pressure (LPP) increased from 50.6cmH20 to 110.8cmH2O, detrusor pressure of maximal flow rate (Pdet.Qmax) increased from 15.8cmH2O to 28.6cmH2O and maximal flow rate (Qmax) decreased from 32.8ml/s to 22.5ml/s after operation. CONCLUSIONS: The TVT procedure is an effective and feasible surgical treatment for female stress urinary incontinence. However, in patients with grade III cystocele, postoperative urge incontinence may develop after the procedure. Since TVT procedure involves securing the mid-urethra, urinary obstruction may also occur, necessitating the need for continued follow-up as well as a careful comparison with other sling procedure.
Cystocele
;
Female
;
Follow-Up Studies
;
Humans
;
Length of Stay
;
Obturator Nerve
;
Physical Examination
;
Surveys and Questionnaires
;
Suburethral Slings*
;
Urinary Bladder
;
Urinary Incontinence
;
Urinary Incontinence, Urge
;
Urodynamics
3.Effects of Cyclosporine on the Intrarenal Renin-Angiotensin System.
Jong Seong KIM ; Mi Ra AN ; Nam Ho KIM ; Ki Chul CHOI ; Jong Un LEE
Korean Journal of Nephrology 1998;17(5):679-685
The present study was aimed at investigating the effect of cyclosporine A (CsA) on the renal renin-angiotensin systems. In rats chronically treated with CsA, the intrarenal expression of various genes of the renin-angiotensin system was assessed by Northern blot analysis. Along with the increases in plasma and renal renin activities, chronic CsA-treatment differentially affected the renal expression of renin-angiotensin system. The treatment with CsA for one week did not significantly alter the expression of either type 1 angiotensin II receptor (AT1A) or angiotensinogen gene, but increased the renin mRNA level. The three-week-treatment caused increases in the expression not only of renin but also of AT1A and angiotensinogen genes. Supplementation with L-arginine kept the expression of renin mRNA normal in the one-week-treated, but failed to prevent the alterations of the gene expression in the three-week-treated. Feedback control among components of the renin-angiotensin system also influences angiotesinogen. In the liver, the expression of angiotensinogen mRNA was decreased by the CsA-treatment for either one- or three-weeks. In conclusion, chronic CsA-treatment is associated with a differential expression of various genes for the renin-angiotensin system. L-Arginine may be effective in maintaining the normality of renin-angiotensin system only during early period after beginning the use of CsA.
Angiotensinogen
;
Animals
;
Arginine
;
Blotting, Northern
;
Cyclosporine*
;
Gene Expression
;
Liver
;
Plasma
;
Rats
;
Receptors, Angiotensin
;
Renin
;
Renin-Angiotensin System*
;
RNA, Messenger
4.Experiences on Anderson-Hynes Pyeloplasty.
Seong Ho CHOI ; Jong Byung YOON
Korean Journal of Urology 1979;20(3):264-276
The operative technic for the correction of hydronephrosis due to obstruction at ureteropelvic junction has been discussed. There are two different types of technics in pyeloplasty ; 1st. nondismembered pyeloplasty molds and restructures the obstructed ureteropelvic junction without completely dismembering it and 2nd. dismembered pyeloplasty interrupts the continuity of the transport system of the obstructed ureteropelvic junction. Since Andereon-Hynes reported the technics which belongs to dismembered pyeloplasty for retrocaval ureter in 1949, many articles with satisfactory result have been published. We report Anderson-Hynes pyeloplasty for hydronephrosis secondary to obstruction of the ureteropelvic Junction in 7 cases. Advantages of Anderson-Hynes pyeloplasty are as follows. 1. Complete excision of the obstructive segment. 2. Reduction of the dead space. 3. Excision of a good part of the sick pelvis. 4. Activation of latent pacemaker P cells.
Fungi
;
Hydronephrosis
;
Pelvis
;
Retrocaval Ureter
5.Papillary Transitional Cell Carcinoma of the Bladder: Report of a Case.
Seong Ho CHOI ; Jong Byung YOON
Korean Journal of Urology 1976;17(4):303-306
Transitional cell carcinoma of the bladder in children is the rarest tumor. Less than 20 cases in children have been reported in the literatures since the first report by Campbell in 1951. We report a case of papillary transitional cell carcinoma of the bladder in a 4-year-old boy and literatures were reviewed.
Carcinoma, Transitional Cell*
;
Child
;
Child, Preschool
;
Humans
;
Male
;
Urinary Bladder*
6.Genotypes of Circumsporozoite of Plasmodium vivax in Korea.
Jong Seong CHOI ; Chae Seung LIM ; Kap No LEE
Korean Journal of Clinical Pathology 1998;18(4):671-677
BACKGROUND: More than 200 million people suffer from malaria worldwide. In Korea this infectious disease had been on a decreasing trend since 1930s and was considered to be eradicated from 1985. However, since 1993 when a case of malaria was reported, its incidence is progressively increased. Recent efforts have been focused on the development of vaccine against the infective sporozoite stage of Plasmodium vivax. It has been found that sporozoites are complicated with genetic variation within the circumsporozoite gene and phenotypic heterogeneity in the protein it encodes. So, we investigated the distribution of circumsporozoite gene of Plasmodium vivax in Korea. METHODS: Polymerase chain reactions (PCR) were performed on samples confirmed with microscopic examination for P. vivax and negative samples with clinical and microscopic examination. The amplified products were analyzed by dot hybridization with oligonucleotide probes VK210 and VK247 which are respectively complementary to the predominant and variant strains of the circumsporozoite gene of P. vivax. RESULTS: The incidence of isolation in VK210 and VK247 strains were 96.3%, respectively and individuals who were infected with both strains were 92.7%. Compared to the microscopic examination, the results of PCR showed 82% in sensitivity, 100% in specificity. CONCLUSIONS: The present study suggests that a single-epitope vaccine based on either one circumsporozoite domain is unlikely to be protective because both VK210 and VK247 strains of P. vivax were found widely in Korea. The PCR method appears not to be feasible as a screening, but suitable as a confirmatory test for the identification of Plasmodium species.
Communicable Diseases
;
Genetic Variation
;
Genotype*
;
Incidence
;
Korea*
;
Malaria
;
Mass Screening
;
Oligonucleotide Probes
;
Plasmodium vivax*
;
Plasmodium*
;
Polymerase Chain Reaction
;
Population Characteristics
;
Sensitivity and Specificity
;
Sporozoites
7.Phylogenetic Analysis of Human Bocavirus in Hospitalized Children with Acute Respiratory Tract Infection in Korea.
Jong Gyun AHN ; Seong Yeol CHOI ; Dong Soo KIM ; Ki Hwan KIM
Korean Journal of Pediatric Infectious Diseases 2012;19(2):71-78
PURPOSE: Human bocavirus (hBoV), a recently discovered virus, has been detected in children with respiratory tract infections worldwide. The aim of this study was to analyze the frequency and molecular phylogeny of hBoV in the respiratory samples of children with acute respiratory tract infections in 2010. METHODS: Nasopharyngeal samples were collected from 953 children with lower respiratory tract infections at Severance children's hospital in Korea from January 2010 to December 2010. We applied the multiplex PCR technique for the identification of 12 respiratory viruses from the samples. Among the total specimens, hBoV positive samples were subjected to phylogenetic analysis by sequencing a fragment of the VP1/VP2 gene junction. RESULTS: hBoV was detected in 141 (14.8%) among 953 patients. The 61.7% of hBoV-positive samples were found to co-exist with other respiratory viruses. The results of phylogenetic analysis showed that all 141 hBoV-positive isolates were identified as hBoV 1, revealing a high similarity among the isolates (>98%). CONCLUSION: hBoV 1 with minimal sequence variations circulated in children with acute respiratory infections during 2010. More research is needed to determine the clinical severity and outcomes of the minimal sequence variations.
Child
;
Child, Hospitalized
;
Human bocavirus
;
Humans
;
Korea
;
Multiplex Polymerase Chain Reaction
;
Phylogeny
;
Respiratory System
;
Respiratory Tract Infections
;
Viruses
8.Timing of Penile Color Flow Duplex Ultrasonography Using a PGE1.
Seong CHOI ; Yeon Tae JEONG ; Jong Min KIM ; Hyun Yul RHEW
Korean Journal of Urology 1997;38(5):473-478
Duplex ultrasonography (USG) is an accepted method to assess noninvasively arterial inflow to the penis. Optimal pharmacological agents as well as timing of the scan and stimulation during the scan continue to be debated. Between August 1994 and May 1996, 24 normal males (control group) and 45 impotent patients (impotence group) underwent penile doppler sonography, and their records were reviewed. Scans were performed at 1, 3, 5, 10, 15, 20 and 30 minutes after intracavernous injection of PGE1 (10 pg) in all subjects. Any subject not having a full erection at 15 minutes performed private self-stimulation for at least 5 minutes before the 30 minute scan. If we define normal arterial inflow as a peak systolic velocity (PSV) of 30 cm. per second or greater in the best artery, 46% of control group and 55% of impotence group achieved this velocity until 5 minutes. One (4%) of control group and three (6%) of impotence group achieved maximum velocity at 1 or 3 minutes but continually PSV of 30 cm. per second or greater after 5 minutes, so any subject may not have had an incorrect diagnosis. When we calculated maximum velocity in the best artery in relation to percentage tumescence, maximum velocity were recorded most often at 10% tumescence (46% of control group and 51% of impotence group). If we define normal arterial inflow as PSV of 30 cm. per second or greater in best artery, the cumulative percentage of patients who achieved this velocity at 1, 3, 5, 10, 15, 20 and 30 minutes were 4, 34, 46, 88, 96, 96 and 100% in control group and 6, 28, 55, 90, 92, 94 and 96% in impotence group. In conclusion, we support delaying the initial scan until 5 minutes, performing the additional scans until 30 minutes and self-stimulation when necessary. We believe all efforts should be made to have studies performed in the setting of least anxiety to the patient.
Alprostadil*
;
Anxiety
;
Arteries
;
Diagnosis
;
Erectile Dysfunction
;
Humans
;
Male
;
Penis
;
Ultrasonography*
9.A Case of Chronic Pancreatitis Complicated by Retroperitoneal and Intrasplenic Pseudocysts.
Myung Hwan NHO ; Seok Reyol CHOI ; Woo Won SHIN ; Jong Seong KIM
Korean Journal of Gastrointestinal Endoscopy 1991;11(2):351-353
A 69-year-old-male patient was admitted because of left upper quadrant (LUQ) abdominal pain He had hard palpable mass (abaut 15x l0cm) in LUQ abdomen and mild elevated serum alkaline phosphatase (349 IU/L) and amylase (216 U/L) levels at the admission time. Abdominal CT scan revealed huge, well-marginated cystic mass in enlarged spleen with increased densities in dependent portion of cystic mass, about 8x13cm in size. Another small well-capsulated. cystic mass in anterior aspect of spleen was also seen. After ERCP, urgent surgical intervention was done. Final diagnosis was chronic pancreatitis with large intrasplenic (l2x9.5 cm) and retroperitoneal pseudocysts. So we are reporting above case with pertinent review of literatures.
Abdomen
;
Abdominal Pain
;
Alkaline Phosphatase
;
Amylases
;
Cholangiopancreatography, Endoscopic Retrograde
;
Diagnosis
;
Humans
;
Pancreatitis, Chronic*
;
Spleen
;
Splenomegaly
;
Tomography, X-Ray Computed
10.A Case of Cushing's Syndrome.
Seong Ja JEON ; Oh Kyung LEE ; Keun Chull CHOI ; Myung Ho LEE ; Jong Deok KIM
Journal of the Korean Pediatric Society 1983;26(9):928-933
No abstract available.
Cushing Syndrome*