1.Usefulness of Triple Marker Testing for Prenatal Diagnosis.
Jong Rak CHOI ; Kyung A LEE ; Kyung Soon SONG
Korean Journal of Clinical Pathology 1997;17(4):575-580
BACKGROUND: Our purpose was to assess the utility of prenatal triple-marker (alpha- fetoprotein (AFP), beta-human chorionic gonadotropin (hCG) and unconjugated estriol (uE3) testing for chromosomal abnormalities in women with Down syndrome screen-positive results. METHODS: Total 1,082 women between 15 and 21 weeks' gestation received second trimester Down syndrome risk evaluation by triple marker testing. AFP, beta-hCG and uE3 were measured by Coat-A-Count(R) IRMA (Diagnostic Products Corporation, LA, USA), The risk for Down syndrome was calculated using a commercially available software program (AFP Expert; Benetech Medical System, Toronto, Canada) by use of a Down syndrome risk cutoff value(1:270 at midtrimester). Karyotypes were reviewed for 32 (54.2%) of these patients who received prenatal chromosome analysis. RESULTS: Fifty nine (5.5%) patients of the 1,082 women screened were identified as positive. Two chromosome abnormalities (47,XYY and 46,XX, int (9) ) were found in the 32 patients who underwent prenatal chromosome analysis (6.3%). Any cases on the abnormal serum tests torn out not to be associated with trisomy 21. CONCLUSIONS: Although triple marker screen appears to be an effective method detecting chromosome abnormalities there is a high false positive rate. Therefore, new screening test that reduce false positive rate is need to be introduced.
Chorionic Gonadotropin
;
Chromosome Aberrations
;
Down Syndrome
;
Estriol
;
Female
;
Fetal Proteins
;
Humans
;
Karyotype
;
Mass Screening
;
Pregnancy
;
Pregnancy Trimester, Second
;
Prenatal Diagnosis*
2.Mercury contents in scalp hair of dentists and in their dental office.
Kyung Hee SONG ; Doo Hie KIM ; Jong Young LEE
Korean Journal of Occupational and Environmental Medicine 1991;3(1):21-31
No abstract available.
Dental Offices*
;
Dentists*
;
Hair*
;
Humans
;
Scalp*
5.Molecular Cloning and Nucleotide Sequence of the Gene Encoding Fusion(F) Protein of the Thermostable Newcastle Disease Virus Isolated from a Diseased Pheasant.
Kyung Soo CHANG ; Kui Hyun KIM ; Moo Hyung JUN ; Hee Jong SONG ; Jong Hyeon PARK
Journal of the Korean Society of Virology 1998;28(3):233-244
The gene encoding F protein of CBP-1 strain, a heat-stable Newcastle disease virus (NDV) isolated from the diseased pheasants in Korea, was characterized by reverse transcription-polymerase chain reaction (RT-PCR), nucleotide and amino acid sequences. Virus RNA was prepared from the chorioallatoic fluid infected with NDV CBP-1 virus and cDNA was amplified by RT-PCR, cloned and sequenced to analyze. The PCR was sensitive as to detect the virus titer above 25 hemagglutination unit. 1.7kb (1,707bp) size of the cDNA was amplified and cloned into BamHI site of pVL1393 Baculo transfer vector. The nucleotide sequences for F protein were determined by dye terminator cyclic sequencing using four pairs of primers, and 553 amino acid sequences were predicted. In comparison of the nucleotide sequence of F gene of CBP-1 with those of other NDV strains, the homology revealed 88.8%, 98.5% and 98.7% with Kyojungwon (KJW), Texas GB and Beaudette C strains, respectively. As the deduced 553 amino acid sequences of F protein of CBP-1 were compared with those of other NDV strains, the homology appeared 89.9%, 98.7% and 98.9% with KJW, Texas GB and Beaudette C strains, respectively. The putative protease cleavage site (112-116) was R-R-Q-K-R, indicating that CBP-1 strain is velogenic type. The amino acid sequences include 6 sites of N-asparagine-linked glycosylation and 13 cysteine residues. These data indicate that the genotype of CBP-1 strain is more closely associated with the strains of Texas GB and Beaudette C than KJW strain.
Amino Acid Sequence
;
Animals
;
Base Sequence*
;
Clone Cells
;
Cloning, Molecular*
;
Cysteine
;
DNA, Complementary
;
Genotype
;
Glycosylation
;
Hemagglutination
;
Korea
;
Newcastle disease virus*
;
Newcastle Disease*
;
Polymerase Chain Reaction
;
RNA
;
Texas
;
Viral Load
6.Prenatal diagnosis of Duchenne muscular dystrophy using Polymerase Chain Reaction-restriction fragment length polymorphism(RFLP).
Dong Hyun CHA ; Kook LEE ; Jong Rak CHOI ; Kyung Soon SONG
Korean Journal of Obstetrics and Gynecology 2000;43(6):1080-1087
OBJECTIVE: Duchenne muscular dystrophy(DMD) is a X-linked recessive disease and results from mutation in the dystrophin gene. In this study, we evaluate the efficacy of polymerase chain reaction-restriction fragment length polymorphism in prenatal genetic diagnosis of DMD. METHODS: DNA was isolated from DMD family's blood and fetal amniocyte and used to perform PCR-RFLP. In DMD family(3 cases), linkage analysis was tried with 5 RFLP probes. RESULTS: DMDs of the family A had mutiple exon deletions(6, 8, 12, 13, 17). The mother was a heterozygote of pERT84;MaeIII. The male fetus had a same allele and also same exon deletions with the affected males. The pregnancy was terminated at IUP 18 gestational weeks. Pregnant woman of the family B was heterozygote of both pERT84;MaeIII and pERT87-15;BamHI, and pregnant woman of the family C was of pERT84;MaeIII. The both male fetuses , as compared with the affected male of each family, had a different allele. Thus, the fetuses were probably not affected with a confidence level of 95%. CONCLUSIONS: Prenatal diagnosis in prevention of DMD is most important. PCR-RFLP analysis in DMD family is rapid and useful diagnostic tool.
Alleles
;
Diagnosis
;
DNA
;
Dystrophin
;
Exons
;
Female
;
Fetus
;
Heterozygote
;
Humans
;
Male
;
Mothers
;
Muscular Dystrophy, Duchenne*
;
Polymerase Chain Reaction
;
Polymorphism, Restriction Fragment Length
;
Pregnancy
;
Pregnant Women
;
Prenatal Diagnosis*
7.Mediastinal parasitic cyst by paragonimiasis.
Ki Ho SONG ; Man Jong BAEK ; Kyung SUN ; Kwang Taik KIM ; In Sung LEE ; Hyoung Mook KIM
The Korean Journal of Thoracic and Cardiovascular Surgery 1993;26(1):67-69
No abstract available.
Paragonimiasis*
8.Health hazard of workers potentially exposed to trichloroethylene in the Inchon area.
Young Hahn MOON ; Jaehoon ROH ; Kyung Jong LEE ; Chang Iei SONG
Korean Journal of Occupational and Environmental Medicine 1992;4(1):14-19
No abstract available.
Incheon*
;
Trichloroethylene*
9.A Case of Squamous Cell Carcinoma Arising in the Lesion of Chronic Discoid Lupus Erythematosus.
Kyung Seok OH ; Mu Hyun SONG ; Sung Yul LEE ; Jong Suk LEE ; Kyu Uang WHANG
Korean Journal of Dermatology 2000;38(3):399-403
Squamous cell carcinoma(SCC) is a recognized late complication of chronic discoid lupus erythematosus(CDLE). There are many case reports of SCC in white patients with chronic DLE. However, it is uncommon in blacks and Asians. The etiology of squamous cell carcinoma is multifactorial. The predisposing factors for the development of SCC in these patients include actinic keratosis, Bowen's disease, burn scars, arsenic keratosis, and chronic discoid lupus erythematosus. Of these causes, SCC developing in the lesions of CDLE is very rare. We report a patient who has been evaluated for ten years with a diagnosis of discoid lupus erythematosus and has squamous cell carcinoma.
African Continental Ancestry Group
;
Arsenic
;
Asian Continental Ancestry Group
;
Bowen's Disease
;
Burns
;
Carcinoma, Squamous Cell*
;
Causality
;
Cicatrix
;
Diagnosis
;
Humans
;
Keratosis
;
Keratosis, Actinic
;
Lupus Erythematosus, Discoid*
10.Sedation of Children for MR or CT Imaging Examination Using Chloral Hydrate.
Woo Sun KIM ; Man Chung HAN ; In One KIM ; Kyung Mo YEON ; Jong Gi SONG
Journal of the Korean Radiological Society 1994;31(2):358-362
PURPOSE: Pediatric sedation is an important factor for obtaining the images of good quality. We performed this study to analyze the efficacy of our sedation protocol using chloral hydrate. MATERIALS AND METHODS: We collected prospectively 151 sedation records of children(1 day-15 years old), who were sedated with chloral hydrate for MR(n=112) or CT(n=39) studies. We initially administered 50mg/Kg orally(n=94) or rectally(n=57) 30 minutes before the scheduled examinations, and then administered additionali dose (second dose :25-35mg/Kg, third dose:10-15mg/Kg) to patients whom initial dose failed to sedate. RESULTS: Satisfactory sedation was achieved by initial administration in 109 patients(72%) without si difference between oral(per oral: P.O.) and rectal(per rectal: P.R.) administration. Second dose was required in 28% and third dose in 5%. MR and CT examinations required second dose in 36(32%) and 6 patients(15%), respectively. P.O. -patients vomited in 5%. P.R. -patients defecated in 22% after initial administration. There were no other serious complications. Time interval from the drug administration to the start of examinations was 33 minutes in initial-dose-group and 64 minutes in additional-dose-group. Two patients could not complete MR examination due to early arousal. Prolonged sedation, requiring more than 30 minutes for alertness after MR and CT examinations, was encountered in twenty(18%) and two patients(5%), respectively. CONCLUSION: Our protocol using chloral hydrate(P.O. or P.R.) is thought to be an effective and safe method for pediatric sedation for MR or CT imaging.
Arousal
;
Child*
;
Chloral Hydrate*
;
Humans
;
Prospective Studies