1.A riboprinting scheme for identification of unknown Acanthamoeba isolates at species level.
The Korean Journal of Parasitology 2002;40(1):25-31
We describe a riboprinting scheme for identification of unknown Acanthamoeba isolates at the species level. It involves use of the PCR-RFLP of small subunit ribosomal RNA gene (riboprint) of 24 reference strains by 4 kinds of restriction enzymes. Seven strains in morphological group I and III were identified at species level with their unique sizes of PCR product and riboprint type by Rsa I. Unique restriction fragment length patterns of 17 strains in group II by Dde I, Taq I and Hae III were classified into: (1) four taxa that were identifiable to the species level, (2) a subgroup of 4 taxa and a pair of 2 taxa that were identical to each other, and (3) a species complex of 7 taxa assigned to A. castellanii complex that were closely related. These results were consistent with that of 18s rDNA sequence analysis. This approach provides an alternative to the rDNA sequencing for rapid identification of a new clinical isolate or large number of environmental isolates of Acanthamoeba.
Acanthamoeba/classification/genetics/*isolation & purification
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Animals
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Polymerase Chain Reaction
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Polymorphism, Restriction Fragment Length
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RNA, Protozoan
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RNA, Ribosomal
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Ribotyping/*methods
2.Studies on Identification and Drug Resistance of Atypical Mycobacteria Isolated from Patients with Pulmonary Tuberculosis.
Dong Hyun CHUNG ; Sung Kwang KIM ; Joo Deuk KIM
Yeungnam University Journal of Medicine 1984;1(1):49-58
The differential diagnosis of atypical mycobacteriosis caused by atypical mycobacteria (with the exception of Mycobacterium tuberculosis, Mycobacterium bovis, and Mycobacterium leprae) which are widly distributed in soil and water, from pulmonary tuberculosis is possible only when atypical mycobacteria are isolated and identified. In this investigation, attempts were made to isolate atypical mycobacteria from persons registered as tuberculosis patients in the Anyang Health Center in Anyang City, Kyungki province, Korea. Biological and biochemical tests were performed for the atypical mycobacteria isolated from these patients, also retrospective analysis of clinical and X-ray findings of the patients with bacteriologically confirmed atypical mycobacteriosis were done. The results can be summarized as follows; 1. 103 strains of mycobacteria were isolated among 334 sputum samples from patients. 2. Among the isolated mycobacteria, 10 strains (9.7%) were found to be an atypical mycobacteria and 93 strains (90.3%) were tubercle bacilli of human type. 3. On the basis of Runyon's grouping of atypical mycobacteria, there were 3 strains (30.0%) of scotochromogen and nonphotochromogen respectively, 4 strains (40.0%) of rapid grower, and no photochromogen. 4. By biochemical tests, 3 strains of scotochromogen were identified as Mycobacterium scroful-aceum (2 strains) and Mycobacterium szulgai (1 strain) 3 strains of nonphotochromogen were Mycobacterium avium-complex (2 strains) and Mycobacterium terriae (1 strain), and 4 strains of rapid grower were Mycobacterium fortuitum (3 strains) and Mycobacterium chelonae. 5. In drug sensitivity tests, all 10 strains isolated atypical mycobacteria showed resistance to various concentration of INH and SM and low concentration (10 mcg, 40 mcg and 50 mcg) of EB, TH, and CS, and were sensitive to only high concentration (20 mcg and 100 mcg) of EB, TH, CS, and RFP. 6. In analysis of clinical findings by the patients with bacteriologically confirmed atypical mycobacteriosis, it was found that clinical symptoms of these patients appeared not to be mild than those of patients with pulmonary tuberculosis. The patients with atypical mycobacteriosis had been treated for pulmonary tuberculosis for a long time and they showed no improvement.
Diagnosis, Differential
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Drug Resistance*
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Gyeonggi-do
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Humans
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Korea
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Mycobacterium
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Mycobacterium bovis
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Mycobacterium chelonae
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Mycobacterium fortuitum
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Mycobacterium tuberculosis
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Nontuberculous Mycobacteria*
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Retrospective Studies
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Soil
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Sputum
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Tuberculosis
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Tuberculosis, Pulmonary*
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Water
3.Patients' Satisfaction after Reverse Total Shoulder Arthroplasty Is Affected by Preoperative Functional Status.
Jong Pil YOON ; Dong Hyun KIM ; Seok Won CHUNG
Clinics in Shoulder and Elbow 2016;19(3):119-124
BACKGROUND: The purpose of this study is to evaluate the functional outcomes of reverse total shoulder arthroplasty (RTSA) and to assess factors affecting the patients' subjective satisfaction after RTSA. METHODS: Forty-three patients (mean age, 75.0 ± 5.2 years) who underwent RTSA for cuff tear arthropathy or irreparable cuff tears with preoperative magnetic resonance imaging and pre- and postoperative radiographs at 1 year, and whose various functional outcomes including pain visual analogue scale (VAS), simple shoulder test, Constant score, American Shoulder and Elbow Surgeons score, and active range of motion were evaluated preoperatively and at the last follow-up (>12 months) were enrolled. The outcome parameter was set as a satisfaction scale. Various clinical and radiographic factors were analyzed, and their correlations with postoperative satisfaction were evaluated. RESULTS: All functional scores, VAS pain score, and active forward flexion showed significant improvement after surgery (all p<0.001). Twenty-nine patients were satisfied with the results and 14 were dissatisfied. The presence of pseudoparalysis (p=0.028) and worse preoperative function (all p<0.05) were related with higher satisfaction. Any radiologic parameters did not affect patients' postoperative satisfaction. CONCLUSIONS: All patients showed a good functional outcome after RTSA, however the patients' subjective postoperative satisfaction was affected by preoperative functional status (higher satisfaction in poor preoperative function), not by radiological findings.
Arthroplasty*
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Elbow
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Follow-Up Studies
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Humans
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Magnetic Resonance Imaging
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Range of Motion, Articular
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Shoulder*
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Surgeons
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Tears
4.Primary aldosteronism.
Choon Sik JEONG ; Hyun Pyo CHO ; Il Dong CHUNG
Journal of the Korean Surgical Society 1993;44(4):579-583
No abstract available.
Hyperaldosteronism*
5.Cloning and characterization of Giardia intestinalis cyclophilin.
Hak Sun YU ; Hyun Hee KONG ; Dong Il CHUNG
The Korean Journal of Parasitology 2002;40(3):131-138
The cyclophilins (Cyps) are family members of proteins that exhibit peptidylprolyl cis-trans isomerase (PPIase, EC 5.2.1.8) activity and bind the immunosuppressive agent cyclosprin A (CsA) in varying degrees. During the process of random sequencing of a cDNA library made from Giardia intestinalis WB strain, the cyclophilin gene (gicyp 1) was isolated. An open reading frame of gicyp 1 gene was 576 nucleotides, which corresponded to a translation product of 176 amino acids (Gicyp 1). The identity with other Cyps was about 58-71%. The 13 residues that constituted the CsA binding site of human cyclophilin were also detected in the amino acid sequence of Gicyp 1, including tryptophan residue essential for the drug binding. The single copy of the gicyp 1 gene was detected in the G. intestinalis chromosome by southern hybridization analysis. Recombinant Gicyp 1 protein clearly accelerated the rate of cis--
6.A Classification of Polydactyly and Its Application to The Treatment
Goo Hyun BAEK ; Moon Sang CHUNG ; Dong Jun KIM
The Journal of the Korean Orthopaedic Association 1995;30(3):510-517
Polydactyly is one of the most common congenital anomalies of the limb, however its surgical treatment varies from simple excision to reconstruction. The purpose of this study is to present out classification of polydactyly in which the type of surgery was concerned primarily. Two hundred and thirty five digits(134 fingers and 101 toes) in 188 patients were operated from 1980 to 1992. We divided the polydactyly into two types-the simple type, in which the extradigit arises from only one digit, and the complex type in which the extradigit connects more than two adjacent main digits. The simple type was subdivided into joint type(type I), in that the extradigit has its own joint in its origine; epiphyseal type(type II), the extradigit share common epiphysis with main digit; and hypoplastic type(type III), the extradigit is connected only by soft tissue to the main digit. The epiphyseal type(type II) was further divided into subtype A(type IIA), in that the origin seems to be directly derived from the epiphysis; and subtype B(type IIB), which resemble an osteochondroma. Type III and type IIB can be treated by simple excision, however the type I and type IIB can be treated by arthroplasty with or without osteotomy as well as excision of extradigit. Result of surgical treatment in 1 digit of the simple form, which siginifies the extradigit arising from only one digit, are good in 193 digits(91%), fair 14(6.6%), and poor 5(2.4%) after an average follow-up period of 20 months. Our principles in the surgical treatment of polydactyly was treatment according to the type, and early treatment.
Arthroplasty
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Classification
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Epiphyses
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Extremities
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Fingers
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Follow-Up Studies
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Humans
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Joints
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Osteochondroma
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Osteotomy
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Polydactyly
7.Double-Layered Lateral Meniscus: A Case Report
Chung Nam KANG ; Dong Wook KIM ; Seung Hyun HWANG
The Journal of the Korean Orthopaedic Association 1996;31(6):1307-1310
Many types of meniscal anomalies were reported. Authors found a double-layered lateral meniscus, with one meniscus overlying another. The 39-year old male patient had torn medial and lateral menisci. We performed partial medial and lateral meniscectomy, and incidentally found that lateral meniscus was double-layered. It was characteristic that the upper small accessory meniscus was firmly connected from the posterior horn to middle segments of the lower main meniscus along its peripheral edge. We left it alone. The symptoms were gone, So, it was thought that this anomaly was not related to the patient's symptoms.
Animals
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Horns
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Humans
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Male
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Menisci, Tibial
8.Hemorrhagic Chicken Pox.
Joon CHUNG ; Kee Yang CHUNG ; Seung Kyung HANN ; Hyun Hee LEE ; Dong Soo KIM
Korean Journal of Dermatology 1994;32(3):509-513
Primary varicella infection usuelly runs a benign clinical course in the helthy population. However, hemorrhagic chicken pox presents with a very extensive eruption of hemorrhagic vesicles in patients with decreaed platelets or impaired immunity and is accompanied by severe constitutional symptoms. A 7-year-old male was admi due to abdompal pain for 1 day and peneralized vesicular eruption for 5 days. The eruption first appeared on the trunk and then spread to involved face, scalp and extrsmities. The skin rash was compatable with varicella but despite the administration of acclovir intravenously, the vesicular eruption became hemorrhagic. Ten days after admission, having experienced cardisc arrest twice and with his mental state in coms, he was diseharged as his situation was hopelesa. We have experienced a giatient diagnosed as having hemorrhagie, chicken pox complicated by encephalopathy.
Chickenpox*
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Chickens*
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Child
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Exanthema
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Humans
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Male
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Scalp
9.Analysis of doppler blood flow velocity waveforms of the fetal umbilical artery in normal pregnancies.
In Sik LEE ; Jae Hyun CHUNG ; Young Tak KIM ; Dong Geun CHUNG ; Ahm KIM ; Jung Eun MOK
Korean Journal of Obstetrics and Gynecology 1991;34(8):1090-1095
No abstract available.
Blood Flow Velocity*
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Pregnancy*
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Umbilical Arteries*
10.A Quantitative Analysis of Collagen Fibril Diameters of Transverse Carpal Ligament in Patients with Carpal Tunnel Syndrome.
Goo Hyun BAEK ; Yong Jin CHUNG ; Moon Sang CHUNG ; Young Ho LEE ; In Ho SEONG ; Dong Han KIM
Journal of Korean Orthopaedic Research Society 2001;4(1):1-9
No Abstract Available.
Carpal Tunnel Syndrome*
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Collagen*
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Humans
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Ligaments*