1.Effects of Alginate Culture on Viability, Proliferation, and Phenotype of Canine Articular Chondrocytes.
Hyeong Geun PARK ; Jeong Im WOO ; So Ra PARK ; Han Jo LIM ; Byoung Hyun MIN
Journal of Korean Orthopaedic Research Society 2001;4(1):24-31
No Abstract Available.
Chondrocytes*
;
Phenotype*
2.Noise Level and Frequency Experienced by Premature Infants Receiving Incubator Care in the Neonatal Intensive Care Unit
Child Health Nursing Research 2020;26(2):296-308
Purpose:
The purpose of this study was to identify the noise level and frequency experienced by premature infants receiving incubator care in the neonatal intensive care unit (NICU).
Methods:
The participants were 20 premature infants receiving incubator care in the NICU of a university hospital in Daejeon Metropolitan city. The noise level was measured using a professional sound-level meter (ET-958, FLUS, Shenzhen, China) based on a noise classification table developed by the author. The data were analyzed with descriptive statistics, the t-test, analysis of variance, and Pearson correlation coefficients using SPSS for Windows version 22.0.
Results:
The average noise level experienced by premature infants receiving incubator care in the NICU was 51.25 dB (range: 45.0~81.7 dB). The frequency of noises was highest for factors related to nursing activities (40.3%), followed by human factors (29.1%), machine alarm sounds (20.1%), incubator operation (6.6%), and internal environmental factors (3.9%).
Conclusion
According to the above results, the noise level experienced by premature infants receiving incubator care in the NICU exceeded the recommendations of the American Academy of Pediatrics. Therefore, it is necessary to develop an interventional program to reduce noise in the NICU, and to conduct follow-up studies to verify its effectiveness.
3.The effect of proliferation and phenotype by ascorbic acid on human articular chondrocytes culture.
Hyun Jung LEE ; Jung Im WOO ; So Ra PARK ; Byoung Hyun MIN
Journal of Korean Orthopaedic Research Society 2001;4(2):150-158
For the successful autologous chondrocyte transplantation, it is important to maximize the number of chondrocyte and maintain its original morphology and phenotypic change of the chondrocyte in the culture. In this study, the effect of ascorbic acid and human serum which are known to promote cell proliferation and collagen synthesis was observed in the culture of human chondrocyte. Media were prepared with the conditions of fetal bovine Serum(FBS) treated group, FBS +ascorbic acid(asc) treated group, human serum(HuS) treated group, and HuS+asc treated group, respectively. Proliferation was measured by cell counting using trypan-blue staining method. We used to determine the degree of expression of aggrecan of mRNA and type II collagen using RT-PCR. Type II collagen in cultured cell and medium was measured by western blot analysis and proteoglycan synthesis by DMB (Dimethylene Blue) assay. Under all conditions, aggrecan on mRNA level was well expressed. On the other hand, expression of type II collagen was reduced on HuS treated group than FBS treated group, and ascorbic acid treated groups showed decreased expression of type II collagen. Western blot analysis showed increased expression of type II collagen on HuS treated group than FBS treated group, and ascorbic acid treated groups showed increased level. HuS+asc treated group showed the most significant effect than the other groups. The increased effects of ascorbic acid on the proliferation and collagen synthesis were more prominent in the culture with human serum. It might be due to the synergic effect with some growth factors which were present in human serum.
Aggrecans
;
Ascorbic Acid*
;
Blotting, Western
;
Cell Count
;
Cell Proliferation
;
Cells, Cultured
;
Chondrocytes*
;
Collagen
;
Collagen Type II
;
Hand
;
Humans*
;
Intercellular Signaling Peptides and Proteins
;
Phenotype*
;
Proteoglycans
;
RNA, Messenger
4.A case of Meigs' syndrome.
So Hyun PARK ; No Hyun PARK ; Young Ran HAN ; Moon Whan IM ; Jong Hyeok KIM ; Jin Yong LEE
Korean Journal of Obstetrics and Gynecology 1991;34(2):298-303
No abstract available.
Female
;
Meigs Syndrome*
5.A case of Meigs' syndrome.
So Hyun PARK ; No Hyun PARK ; Young Ran HAN ; Moon Whan IM ; Jong Hyeok KIM ; Jin Yong LEE
Korean Journal of Obstetrics and Gynecology 1991;34(2):298-303
No abstract available.
Female
;
Meigs Syndrome*
6.A case of endocervical stromal sarcoma.
Moon Hwan IM ; Young Cheol YU ; Young Ran HAN ; So Hyun PARK ; Cheong Rae ROH ; Soon Beom KANG
Korean Journal of Obstetrics and Gynecology 1991;34(3):444-449
No abstract available.
Sarcoma*
7.Nonsurgical treatment of ectopic pregnancy:Local methotrexate injection.
Kae Hyun NAM ; Jeong Jae LEE ; So Young JIN ; Im Soon LEE ; Kwon Hae LEE ; Tai Ho CHO
Korean Journal of Obstetrics and Gynecology 1993;36(5):625-633
No abstract available.
Methotrexate*
8.An anesthetic experience in severe preeclampsia patient suspected HELLP syndrome with an intraperitoneal hemorrhage caused by a rapidly progressed liver rupture: A case report.
Hyun Joo HEO ; Hyungtae KIM ; Ji Hye LEE ; So Mang IM ; Ok Hyun KIM ; Han Gyeol LEE
Anesthesia and Pain Medicine 2018;13(4):401-404
The diagnosis of HELLP syndrome associated with preeclampsia-eclampsia during pregnancy uses three test results, including hemolysis, elevated liver enzyme, low platelets and their related clinical symptoms. Liver rupture is a life-threatening and rare complication related to HELLP syndrome. Early diagnosis and rapid treatment are very important for protecting the life of the patient and the fetus. We are reporting an anesthetic experience a sudden-onset suspicious HELLP syndrome with an intraperitoneal hemorrhage caused by a rapidly progressed liver rupture in a severe preeclampsia patient without any abnormalities during gestation.
Diagnosis
;
Early Diagnosis
;
Eclampsia
;
Female
;
Fetus
;
HELLP Syndrome*
;
Hemolysis
;
Hemorrhage*
;
Humans
;
Liver*
;
Pre-Eclampsia*
;
Pregnancy
;
Rupture*
9.Dedifferentiation of Human Chondrocyte in Monolayer Culture and its Reversibility in Pellet Culture.
Byoung Hyun MIN ; Jeong Im WOO ; So Ra PARK ; Heon Joo PARK ; Shin Young KANG
Journal of Korean Orthopaedic Research Society 1998;1(1):23-31
Articular cartilage is a unique tissue devoid of blood and nerve tissue and so its regeneration is very limited. Recently a clinical trial on transplantation using autologous chondrocyte with periosteal flap has drawn a great deal of attention. Chondrocytes cultured in a plastic flask in monolayer can rapidly dedifferentiate appearing fibroblastic, and exhibit a change in matrix gene expression characterized by a decrease in type II collagen synthesis. It is uncertain whether phenotypic change of dedifferentiated chondrocytes in vitro can be reversible to their original status alter long term culture. It is important to verify tile maintenance of the phenotype and determine the optimum period for culturing chondrocytes to be used in autologous chondrocyte transplantation. This study will be set up to confirm the reversibility of once-dedifferentiated chondrocytes with matrix-producing capability. The phenotype of cultured human chondrocyte is analysed by Northern blot and Western blot analysis for collagen type I and II. Chondrocytes appeared fibroblast right after adhering to the flask buttom at first week of culture. The proliferating rates of chondrocyte in a monolayer culture were maximum at 3rd and 4th week of culture. And thereafter, proliferation rate flowed down or stops as confluence rose. On Northern and Western blot analysis, collagen type II was well expressed by 3th to 4th week culture, thereafter progressively decreased its density with time. On the other hand, collagen type I m-RNA has not expressed until 3rd week of the culture, showing progressive increment of density thereafter. On Northern blot analysis in pellet culture, type II collagen m-RNA is apparantly reexpressed. This study indicates chat in the monolayor culture, the chondrocytic phenotype was lost with regards to morphology and mRNA expression and cartilage specific protein. However, these cells seemed to haute the potential to redifferentiate to well-differentiated chondrocytes in densely packed culture, such as pellet.
Blotting, Northern
;
Blotting, Western
;
Cartilage
;
Cartilage, Articular
;
Chondrocytes*
;
Collagen Type I
;
Collagen Type II
;
Fibroblasts
;
Gene Expression
;
Hand
;
Humans*
;
Nerve Tissue
;
Phenotype
;
Plastics
;
Regeneration
;
RNA, Messenger
10.Arachnoid Cyst in Cavernous Sinus: Case Report.
Hyoung Gun LIM ; Won Jong YOO ; So Lyung JUNG ; Hae Giu LEE ; Hyun Wook LIM ; Soo Ah IM
Journal of the Korean Radiological Society 2002;47(6):561-563
Arachnoid cyst of the cavernous sinus is very rare. When present, its anatomic location frequently gives rise to cranial nerve palsy. We report a case of arachnoid cyst of the cavernous sinus in a 38-year-old man with impaired eyeball movement and diplopia.
Adult
;
Arachnoid Cysts
;
Arachnoid*
;
Cavernous Sinus*
;
Cranial Nerve Diseases
;
Diplopia
;
Humans