1.Effect of IP3 and ryanodine treatments on the development of bovine parthenogenetic and reconstructed embryos.
Gook Jun AHN ; Byeong Chun LEE ; Woo Suk HWANG
Journal of Veterinary Science 2001;2(2):131-137
For parthenogenetic activation as a model system of nuclear transfer, microinjection and electroporation as activation treatments in bovine metaphase II oocytes were administered to each of three groups as follows: control group (treatments with Ca2+, Mg2+ -free PBS+100 micro M EGTA), IP3 group (control+25 micro M IP3) and IP3+ ryanodine group (control+25 micro M IP3+10 mM ryanodine). In experiments using microinjection, no significant differences were observed between any of the developmental stages of the electroporation experiment. For electroporation, cleavage rates were significantly higher in the IP3+ryanodine group than in the IP3 or control group (85.6% vs 73.7% or 67.6%, respectively). In the subsequent stages of embryonic development, such as morula and blastocyst formation, the IP3 and ryanodine group exhibited significantly higher rates of morula fomation than the IP3 or control groups (40.6% vs 24.2% or 16.7%, respectively). Similarly, the rate of blastocyst formation in the IP3+ryanodine group was significantly higher than the control group (16.3% vs 6.9%) but did not differ significantly from the IP3 group (16.3% vs 9.5%). In nuclear transfer, activation was performed at 30 hpm by microinjection and elecroporation with 25 micro M IP3+ 10 mM ryanodine followed by 6-DMAP treatment. No significant differences were observed at any stage of embryonic development and none of the embryos activated by electroporation reached either the morula or blastocyst stage. However, 3.8% and 1.9% of embryos activated by microinjection sucessfully developed to the morula and blastocyst stages, respectively. In conclusion, activation treatments using IP3 and ryanodine are able to support the development of bovine parthenogenetic and reconstructed embryos.
Adenine/administration & dosage/*analogs & derivatives/pharmacology
;
Animals
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Cattle/*embryology/physiology
;
Cell Fusion
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Electroporation/veterinary
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Embryonic and Fetal Development/*drug effects
;
Enzyme Inhibitors/administration & dosage/pharmacology
;
Female
;
Inositol 1,4,5-Trisphosphate/administration & dosage/*pharmacology
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Microinjections/veterinary
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Nuclear Transfer Techniques
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Oocytes/drug effects/growth & development
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Parthenogenesis/*drug effects
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Protein Kinase Inhibitors
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Ryanodine/administration & dosage/*pharmacology
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Skin/cytology
3.MR Imaging Finding of Intracranial Metastatic Melanoma: Report of Two Cases.
Eui Jong KIM ; Woo Suk CHOI ; Hee Young HWANG ; Hyun Cheol KIM
Journal of the Korean Radiological Society 1995;33(5):713-716
MR finding of melanoma shows peculiar signal intensity based on paramagnetic effect of melanin or intratumoral hemorrhage, which displays decreased T1 and T2 relaxation times in many cases. Authors report MR findings in two cases of intracranial metastatic melanoma, which is pathologically confirmed by operation.
Hemorrhage
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Magnetic Resonance Imaging*
;
Melanins
;
Melanoma*
;
Relaxation
4.A Case of Acquired Tufted Angioma.
Jae Young HWANG ; Jin Woo PARK ; Sung Yul LEE ; Jong Suk LEE ; Kyu Uang WHANG
Korean Journal of Dermatology 1999;37(1):128-130
Acquired tufted angioma is a benign, progressive vascular lesion that has a distinctive histopathologic appearance. We report a 31-year-old man with acquireed tufted angioma. Several reddish papules and plaque were present on the neck. The lesion had been present for 6 months. They had enlarged slowly, and were slightly tender. Histopathologic examination of the biopsy specimen showed round to ovoid cellular tufts of capillaries, most prominent in the middle to lower dermis.
Adult
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Biopsy
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Capillaries
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Dermis
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Hemangioma*
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Humans
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Neck
5.Chlamydial infection in women with tubal pregnancy.
Woo Sik LEE ; Dong Hoon HWANG ; Byung Suk LEE ; Ki Hyun PARK ; Chan Ho SONG
Korean Journal of Obstetrics and Gynecology 1993;36(4):534-542
No abstract available.
Female
;
Humans
;
Pregnancy
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Pregnancy, Tubal*
6.Chlamydial infection in women with tubal pregnancy.
Woo Sik LEE ; Dong Hoon HWANG ; Byung Suk LEE ; Ki Hyun PARK ; Chan Ho SONG
Korean Journal of Obstetrics and Gynecology 1993;36(4):534-542
No abstract available.
Female
;
Humans
;
Pregnancy
;
Pregnancy, Tubal*
7.A Case of Left Atrial Myxoma in Childhood.
Heu Ran MIN ; Myoung Hee KOOK ; Yong Jong WOO ; Jae Suk MA ; Tai Ju HWANG
Journal of the Korean Pediatric Society 1988;31(2):263-270
No abstract available.
Myxoma*
8.MRI of osteonecrosis of the femoral head : Diagnostic value and histologic correlation.
Chang Soo KANG ; Byung Woo MN ; Sung Ha LEE ; Suk Young HWANG
The Journal of the Korean Orthopaedic Association 1993;28(2):527-539
No abstract available.
Head*
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Magnetic Resonance Imaging*
;
Osteonecrosis*
9.Diagnostic Significance and Usefulness in Digital Infrared Thermal Imaging (DITI) of Patients with Nonspecific Orbital Inflammation.
Jeong Wan RYU ; Ji Sun PAIK ; Ho Sik HWANG ; Suk Woo YANG
Journal of the Korean Ophthalmological Society 2012;53(12):1732-1736
PURPOSE: The present study assessed the diagnostic significance of digital infrared thermal imaging (DITI) in determining the inflammatory state of patients with nonspecific orbital inflammation. METHODS: The present study included 11 patients diagnosed with nonspecific orbital inflammation between December 2009 and March 2011 and who were followed-up for more than 6 months. All patients were all diagnosed based on computed tomography (CT), magnetic resonance image (MRI) and tissue biopsy. The grade of eyelid swelling was classified as 5 and severe compared with the temperature of location. The temperature of the upper eyelid, caruncle, medial conjunctiva, lateral conjunctiva, lower eyelid, cornea and lateral orbit were measured with DITI. RESULTS: When comparing the normal eye with the diseased eye in patients with nonspecific orbital inflammation, the temperature of the upper eyelid and cornea were statistically significant (p = 0.003, p = 0.038, respectively, Mann-Whitney test). The correlation between the grade of eyelid swelling and the temperature of location was most highly related in the temperature of the upper eyelid (Spearman's correlation coefficient, r = 0.55, p = 0.008) and cornea (Spearman's correlation coefficient, r = 0.45, p = 0.037). CONCLUSIONS: DITI may aid in evaluating the inflammatory state of nonspecific orbital inflammation. In particular, the temperature of the upper eyelid and cornea can be very useful indicator. Future studies, including larger study population are necessary in order to confirm DITI as a diagnostic tool which can assess the results of medical treatment by comparing temperature before and after treatment.
Biopsy
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Conjunctiva
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Cornea
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Eye
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Eyelids
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Humans
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Inflammation
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Magnetic Resonance Spectroscopy
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Orbit
10.Choledochal Cyst and Anomalous Pancreatobiliary Ductal Union in Children.
Suk Woo SON ; Eh Ri HAN ; Seok Joo HAN ; Eui Ho HWANG
Journal of the Korean Surgical Society 1999;57(5):739-744
BACKGROUND: The etiology of choledochal cysts is unknown, but the theory of pancreatobiliary reflux through an anomalous pancreatobiliary ductal union (APBDU) is widely accepted. The aim of this study was to evaluate the correlation between choledochal cysts and APBDUs in children. METHODS: We retrospectively analyzed 33 pediatric patients with choledochal cyst who had undergone excision of the whole extrahepatic bile duct along with hepaticoenterostomy at the Division of Pediatric Surgery, Department of Surgery, Yonsei University College of Medicine, from 1993 to 1998. RESULTS: The mean age of the patients was 51 months, and the ratio of males to females was 1:2.3. Anatomical types were Ia (n=17, 52%), Ic (n=11, 33%), III (n=1, 3%), and IVa (n=4, 12%) in the Todani classification of biliary cysts. We performed endoscopic retrograde cholangiopancreatography, magnetic resonance cholangiopancreatography, or intraoperative cholangiopancreatography in all cases. An APBDU was identified in 24 patients (73%): right angle union (n=11, 33%), acute angle union (n=11, 33%), or a complex union (n=2, 6%) in the Todani classification of APBDUs. Type Ia cystic lesions correlated with right angle unions whereas Type Ic cylindrical lesions correlated with acute angle unions. The mean age of patients with a Type Ic, acute angle union was older than that of patients with a Type Ia, right angle union. In Type Ic, the amylase levels in serum and bile were elevated, but in Type Ia, they were not. CONCLUSIONS: APBDUs correlated highly with the shape of the extrahepatic dilatation, the age at onset, and the reflux of pancreatic juice. We think the excision of the entire extrahepatic duct along with a hepaticoenterostomy and appropriate evaluation of the APBDU are essential for the treatment of choledochal cysts in children.
Amylases
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Bile
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Bile Ducts, Extrahepatic
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Child*
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Cholangiopancreatography, Endoscopic Retrograde
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Cholangiopancreatography, Magnetic Resonance
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Choledochal Cyst*
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Classification
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Dilatation
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Female
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Humans
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Male
;
Pancreatic Juice
;
Retrospective Studies