1.The Morphometric Study on the Vermiform Appendix in Korean Adults.
Kyeong Han PARK ; Uhm Mee RYUNG ; Young Il HWANG ; Douk Ho HWANG ; Ka Young CHANG
Korean Journal of Physical Anthropology 1996;9(1):27-34
The anatomical structure of vermiform appendix was studied for 124 Korean adult cadavers and the articles were reviewed with special reference to its position and length. The results are as follows ; 1. On the frequency of positional types based on Wakeley (1933), postileal type was recorded most frequently (37.7%) and retrocecal type was found in 19.7% of cases, showing the difference from other ethnic groups whose most frequent position was retrocecal or pelvic type. 2. In the direction of appendix in relation to the clock, the direction between 1 and 3 o'clock was most frequently found. 3. Appendix of fixed form was found in 22.1% of cases, that of free form 77.9%. In free form, postileal type was found most frequently, but retrocecal type was met most frequently in fixed form. 4. The length of appendix was 5.95±1.64 cm (male ; 6.14±1.67 cm ; female 5.59±1.51 cm). Neither significant difference between sex nor positional type was noted. 5. Positions of appendix are seemed to be set up during fetal stage. The Ethnic variation in the positions of appendix is thought to be determined by inherited physical anthropological factor, not by postnatal one.
Adult*
;
Appendix*
;
Cadaver
;
Ethnic Groups
;
Female
;
Humans
2.Vasopressin gene expression in the rat hypothalamus studied by in situ hybridization and immunocytochemistry.
Sa Sun CHO ; Kyeong Han PARK ; Douk Ho HWANG ; ka Young CHANG ; Sang Ho BAIK
Korean Journal of Anatomy 1993;26(2):155-166
No abstract available.
Animals
;
Gene Expression*
;
Hypothalamus*
;
Immunohistochemistry*
;
In Situ Hybridization*
;
Rats*
;
Vasopressins*
3.Measurement of the Bile Duct in Korean Normal Adult.
Dong Ho LEE ; Young Il HWANG ; Kyeong Han PARK ; Kyeong Je CHO ; Ka Young CHANG ; Key June SEOUNG
Korean Journal of Physical Anthropology 1988;1(1):65-73
In a jaundiced patient, it is important to ascertain as early as possible whether the bile duct is dilated. Ultrasonography, computed tomography & conventional cholangiography are widely accepted methods of determining the size of the extrahepatic bile ducts. But there is a considerable discrepancy among the size of the bile duct as measured from them. So the author analyzed and compared the respective diameters of the bile ducts in Korean normal adults as measured from cadaver, IV cholangiography, ultrasoud and computed tomography. The materials were 45 cases of cadaver, 38 cases of IV cholangiography, 100 cases of ultrasonography & 55 cases of computed tomography. The results were as follows ; 1. The diameters of the bile ducts were 7.58±2.26mm at CHD & 8.04±2.42mm at CBD from cadaver ; 5.38±1.90mm at CHD & 6.58±2.37mm at CBD from IV cholanglography ; 3.24±1.13mm at CHD & 4.71±1.48mm at CBD from ultrasonography ; and 4.56±1.51mm at CHD & 5.87±1.68mm at CBD from computed tomography. 2. The diameter of the bile duct was greatest in cadaver, and then reduced in IV cholangiography, computed tomography and ultrasonography in this orde.r 3. There were no size discrepancy between the diameter of the common hepatic duct and that of the common bile duct. 4. There were no discrepanry of the diameter of the bile duct by sex.
Adult*
;
Bile Ducts*
;
Bile Ducts, Extrahepatic
;
Bile*
;
Cadaver
;
Cholangiography
;
Common Bile Duct
;
Hepatic Duct, Common
;
Humans
;
Ultrasonography
4.Postoperative Acute Spinal Subdural Hematoma: Report of Two Cases.
Kyeong Bo CHOI ; Byeong Wook HWANG ; Sang Ho LEE
Korean Journal of Spine 2010;7(2):90-95
We report two very rare cases of postoperative acute spinal subdural hematoma (ASSH) and review the literature. ASSH is usually related to trauma or a previous lumbar puncture, and a review of the literature revealed only a few cases of spinal subdural hematomas occurring secondary to an underlying hematological disorder or to an iatrogenic coagulopathy. However, there have been no reports about the occurrence of ASSH as a complication of uneventful spinal surgery. The authors present two cases of postoperative ASSHs after open lumbar microdiscectomy (OLM) and underline the pitfalls in their diagnosis and treatment modalities. Two patients were treated with surgery, which progressed without sequelae, and their preoperative symptoms were resolved. Postoperative ASSH is an extremely rare complication, but precautions for meticulous hemostasis and careful awareness for minimal manipulation of the dura during lumbar surgery should be considered in all patients, even those who do not require multilevel decompressions and/or who have a preoperative coagulopathy.
Diskectomy
;
Hematoma
;
Hematoma, Subdural, Spinal
;
Hemostasis
;
Humans
;
Postoperative Complications
;
Spinal Puncture
5.A cases of velamentous insertion of umbilical cord.
Ho Sang SEO ; Sam Hyeon CHO ; Soo Hyeon JO ; Kyeong Tae KIM ; Yoon Yeong HWANG ; Jai Euk LEE
Korean Journal of Obstetrics and Gynecology 1993;36(12):3970-3975
No abstract available.
Umbilical Cord*
6.The molecular pathophysiology of vascular anomalies: Genomic research
Jong Seong KIM ; Su-Kyeong HWANG ; Ho Yun CHUNG
Archives of Plastic Surgery 2020;47(3):203-208
Vascular anomalies are congenital localized abnormalities that result from improper development and maintenance of the vasculature. The lesions of vascular anomalies vary in location, type, and clinical severity of the phenotype, and the current treatment options are often unsatisfactory. Most vascular anomalies are sporadic, but patterns of inheritance have been noted in some cases, making genetic analysis relevant. Developments in the field of genomics, including next-generation sequencing, have provided novel insights into the genetic and molecular pathophysiological mechanisms underlying vascular anomalies. These insights may pave the way for new approaches to molecular diagnosis and potential disease-specific therapies. This article provides an introduction to genetic testing for vascular anomalies and presents a brief summary of the etiology and genetics of vascular anomalies.
7.Morphology of the Mitral Valve of the Korean Adult Heart.
Tae Yeong BAE ; Kyeong Han PARK ; Douk Ho HWANG ; Sa Sun CHO ; Ka Young CHANG ; Sang Ho BAIK ; Kwang Ho LEE
Korean Journal of Physical Anthropology 1989;2(1):33-41
This study was performed to described morphology of mitral valve by observing and measuring anatomical structures of mitral valves in Korean which looked normal at autopsy, and to provided basic data the clinical application. The mean circumference of mitral valve annulus was 9.14±1.28cm in males and 8.14±1.18cm in females. The width of anterior cusp was 30.3±0.53cm in males and 2.80±0.53cm in females, and the height was 1.99±0.43cm in males and 1.51±0.39cm in females. The posterior cusp consisted of 3 scallops in 34 hearts and 4 scallops in 4 hearts, and 2 scallops in 2 hearts out of 40 hearts. The middle scallop was largest in 36 hearts out of 40 hearts. The width of posteromedial scallop was 1.18±0.37cm in males and 1.08±0.32cm in females, and the height was 0.97±0.31cm in males and 0.94±0.29cm in females. Thre width of midd1e scallop was 2.08±0.61cm in males and 1.84±0.63cm in feamales, and the height was 1.18±0.32cm in male and 1,11±0.25cm in females. The width of anterolateral scallop was 1.30±0.41cm in males and 1.10±0.43cm in females, and the height was 0.88±0.25cm in males and 0.94±0.33cm in females. In general, the values of male were greater than those of female, although there was no statistical significance. Measurements of this study were generally smaller than those of the Caucasian reported by other investigators. Measurements in male were generally larger than those in female and this result corresponded well to those of other authors.
Adult*
;
Autopsy
;
Female
;
Heart*
;
Humans
;
Male
;
Mitral Valve*
;
Pectinidae
;
Research Personnel
8.Inhibition of Overexpression of c-myb Protooncogene in K562 Cells Using c-myb Antisense Oligodeoxynucleotides.
Pyoung Han HWANG ; Ho Keun YI ; Kyeong Mee LEE ; Jung Soo KIM ; Moo Kyung KIM
Korean Journal of Pediatric Hematology-Oncology 1999;6(2):275-285
PURPOSE: The c-myb protooncogene encodes MYB protein that is critical for normal and leukemic hematopoietic cell proliferation and development. It is known that c-myb plays an important role in leukemogenesis as well. Aberrant expression of c-myb is seen in acute myeloid leukemia (AML), acute lymphoid leukemia (ALL), and chronic myeloid leukemia (CML). We reasoned that down regulation of c-myb expression using synthetic antisense oligomers targeted to c-myb mRNA might prove useful antileukemic agents if leukemia cells were more dependent on c-myb function for proliferation than their normal counterparts. To investigate the applying possibility of c-myb antisense oligodeoxynucleotides as the useful antileukemic agents, we examined the cell viability, cloning efficiency and the expression of c-myb mRNA and MYB protein after the exposure of c-myb oligomers on normal bone marrow cells and leukemia cells. MATERIALS AND METHODS: We maintained in short-term suspension culture for 4 days to analyze the effect of c-myb oligomers on normal bone marrow cells and chronic myelocytic leukemia cell line K562. During suspension culture, cell counts and viability were periodically determined, and immediately seeded into duplicate methylcellulose cultures containing recombinanat human interleukin 3 and GM-CSF. Cells placed in semisolid cultures were allowed to grow for an additional 10~12 days. We counted the colonies, and then RNA and protein was extracted from cells cloned in liquified methyl- cellulose cultures. We detected the c-myb mRNA expression by RT-PCR and Southern hybridization analysis and MYB expression by Western hybridization analysis. RESULTS: c-myb sense oligomers had negligible effects on K562 cells growth in short- term suspension culture, while exposure to c-myb antisense oligomers resulted in a daily decline in cell number. In contrast, normal bone marow cell viability and numbers were unaffected by c-myb sense or antisense oligomers exposure. c-myb antisense oligodeoxy nucleotides strongly inhibited or completely abolished growth and colony formation of K562 cells. In contrast, c-myb sense oligomers did not affect. At antisense dose that inhibited leukemic cell growth, normal bone marrow cells survived. Thus, normal and leukemic cells showed the differential sensitivity to the toxic effect of c-myb antisense oligomers. RT-PCR, Southern hybridization analysis and Western hybridization analysis of c-myb antisense-treated K562 cells revealed a complete absence of c-myb mRNA expression and MYB expression. CONCLUSION: Results obtained from these studies suggest that inhibition of c-myb function with antisense oligodeoxynucleotides might eventually form the basis for a molecular biologic approach to leukemia therapy, perhaps most immediately as ex vivo bone marrow purging agent.
Bone Marrow Cells
;
Bone Marrow Purging
;
Cell Count
;
Cell Line
;
Cell Proliferation
;
Cell Survival
;
Cellulose
;
Clone Cells
;
Cloning, Organism
;
Down-Regulation
;
Granulocyte-Macrophage Colony-Stimulating Factor
;
Humans
;
Interleukin-3
;
K562 Cells*
;
Leukemia
;
Leukemia, Myelogenous, Chronic, BCR-ABL Positive
;
Leukemia, Myeloid, Acute
;
Methylcellulose
;
Nucleotides
;
Oligodeoxyribonucleotides*
;
Precursor Cell Lymphoblastic Leukemia-Lymphoma
;
RNA
;
RNA, Messenger
9.Two cases of ruptured congenital sinus of Valsalva aneurysms dissecting into the interventricular septum in patients with cerebral infarction.
Rak Kyeong CHOI ; In Won KIM ; Seung Mook JUNG ; Choon Ho HAN ; Choong Won GOH ; Dal Soo LIM ; Hun Sik PARK ; Suk Keun HONG ; Hweung Kon HWANG
Korean Circulation Journal 2000;30(5):599-604
Sinus of Valsalva aneurysms are rare cardiac anomalies and are usually caused by the separation of the aortic wall media from the valve ring tissue. These aneurysms frequently rupture into the low-pressure areas like the right ventricle and right atrium, rarely do they rupture into the left atrium, left ventricle, pericardial sac, or pulmonary artery. Cerebral infarction has been reported as a rare complication of unruptured sinus of Valsalva aneurysm. We experienced very rare two cases of Valsalva aneurysms of right coronary sinus dissecting into the interventricular septum in patients with cerebral infarction. In two cases these aneurysms ruptured into the left ventricle. These aneurysms were excised and the defect was closed with autopericardium. At the end of the surgical repair, coaptation was found to be insufficient and aortic valve replacement was undertaken.
Aneurysm*
;
Aortic Valve
;
Cerebral Infarction*
;
Coronary Sinus
;
Heart Atria
;
Heart Ventricles
;
Humans
;
Pulmonary Artery
;
Rupture
;
Sinus of Valsalva*
10.Experimental Congenital Diaphragmatic Hernia in a Fetal Lamb Model (I).
Seok Joo HAN ; Ai Ri HAN ; Yong Won PARK ; Dong Hwan SHIN ; Bong Kyeong KIM ; In Sook YANG ; Eui Ho HWANG
Journal of the Korean Surgical Society 2001;61(3):229-236
PURPOSE: The purpose of this study was to construct a fetal animal model of congenital diaphragmatic hernia in a lamb under domestic environments. METHODS: Left-sided diaphragmatic hernias were created in seven fetal lambs at about 85 days' gestation (experimental group). Three other fetal lambs did not receive any surgical procedure and served as control group. Four of these lambs (3 in the experimental group and 1 in the control group) were delivered after a sufficient intrauterine period. The morphological changes of lung development were compared between the two groups. RESULTS: Creation of diaphragmatic hernia resulted in marked hypoplasia in fetal lung development. In this experiment, the maternal mortality was 33.3%, and the fetal mortality was 60% which are relatively high as compared with previous reports. CONCLUSION: From this data, the authors concluded that experimental fetal diaphragmatic hernia can be established although the technique for the measurement of gestational age, anesthesia and postoperative care should be improved to overcome domestic inexperience in using the lamb as an experimental animal.
Anesthesia
;
Animals
;
Fetal Mortality
;
Gestational Age
;
Hernia, Diaphragmatic*
;
Lung
;
Maternal Mortality
;
Models, Animal
;
Postoperative Care
;
Pregnancy