1.The Effect of GM-CSF Supplementation in Culture Medium in the Human IVF Programs.
Won Il PARK ; Hyuck Chan KWON ; Dong Hoon KIM ; Hee Kyoo KANG ; Myo Kyung KIM ; Hoi Chang LEE ; Ji Hak JUNG ; Myong Seop LEE ; Ho Joon LEE
Korean Journal of Fertility and Sterility 2001;28(2):161-168
OBJECTIVE: Granulocyte-macrophage colony stimulating factors known to be secreted in murine and human reproductive tract. The development of human, bovine and murine embryos could be promoted by addition of GM-CSF in culture medium. However, the pregnancy and implantation rate of embryos cultured in GM-CSF have not been evaluated. The aim of this study was to assess the effect of GM-CSF in embryo development, pregnancy and implantation rate. METHODS: A total of 191 IVF cycles were divided into control and GM-CSF supplement group (control =96, GM-CSF=95). The embryos were cultured for three day with or without 2 ng/ml of recombinant human GM-CSF. The quality of embryo, developmental velocity, pregnancy and implantation rates were compared. RESULTS: There was no difference in age, number of gonadotropin ampules used, number of oocytes and fertilization. The number of ICSI cycle was higher in GM-CSF group. In GM-CSF group, G-1 grade embryos were the highest in proportion (56.4%), while G-2 grade embryos were highest (44.3%) in control group. The developmental velocity of embryos were not different between GM-CSF and control group. The pregnancy and implantation rates were significantly higher in GM-CSF group than control (47.4% vs. 33.3%, 17.0% vs. 11.1% respectively). CONCLUSION: By adding GM-CSF in culture medium, the quality of embryo, pregnancy and implantation rate could be improved.
Colony-Stimulating Factors
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Embryonic Development
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Embryonic Structures
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Female
;
Fertilization
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Gonadotropins
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Granulocyte-Macrophage Colony-Stimulating Factor*
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Humans*
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Oocytes
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Pregnancy
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Sperm Injections, Intracytoplasmic
2.Dosimetric Characteristics of a Thermal Neutron Beam Facility for Neutron Capture Therapy at HANARO Reactor.
Dong Han LEE ; Mi Sook KIM ; Soheigh SUH ; Young Hoon JI ; Moon Sik CHOI ; Jae Hong PARK ; Kum Bae KIM ; Seung Yul YOO ; Myong Seop KIM ; Byung Chul LEE ; Ki Jung CHUN ; Jae Won CHO
Korean Journal of Medical Physics 2007;18(2):87-92
A thermal neutron beam facility utilizing a typical tangential beam port for Neutron Capture Therapy was installed at the HANARO, 30 MW multi-purpose research reactor. Mixed beams with different physical characteristics and relative biological effectiveness would be emitted from the BNCT irradiation facility, so a quantitative analysis of each component of the mixed beams should be performed to determine the accurate delivered dose. Thus, various techniques were applied including the use of activation foils, TLDs and ionization chambers. All the dose measurements were performed with the water phantom filled with distilled water. The results of the measurement were compared with MCNP4B calculation. The thermal neutron fluxes were 1.02E9 n/cm2 s and 6.07E8 n/cm2 s at 10 and 20 mm depth respectively, and the fast neutron dose rate was insignificant as 0.11 Gy/hr at 10 mm depth in water. The gamma-ray dose rate was 5.10 Gy/hr at 20 mm depth in water. Good agreement within 5%, has been obtained between the measured dose and the calculated dose using MCNP for neutron and gamma component and discrepancy with 14% for fast neutron flux. Considering the difficulty of neutron detection, the current study support the reliability of these results and confirmed the suitability of the thermal neutron beam as a dosimetric data for BNCT clinical trials.
Fast Neutrons
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Neutron Capture Therapy*
;
Neutrons*
;
Relative Biological Effectiveness
;
Water
3.The Effect of H1-Receptor Antagonist on Hemodynamic Change during Anesthesia.
Tae Soo HAHM ; Chung Soo KIM ; Myong Shin KOO ; Byung Seop SHIN ; Hee Youn HWANG ; Sang Min LEE ; Hyun Sung CHO
Korean Journal of Anesthesiology 2006;51(4):395-399
baseline for safe use of a drug. RESULTS: SVR and PVR failed to show statistically significant changes. Heart rates were increased only at 2 minute after administration of chlorpheniramine maleate. Blood pressures were increased but returned to basal level within 4 minutes. Cardiac output showed statistically significant increase until 8 minutes. However, the changes of hemodynamic values were maintained within 20% of basal levels. CONCLUSIONS: Chlorpheniramine maleate is observed to cause statistically significant hemodynamic change after intravenous administration during anesthesia. But the changes were within 20% of basal levels, and we can safely use chlorpheniramine maleate 8 mg IV in the view of hemodynamic changes.
Administration, Intravenous
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Anesthesia*
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Cardiac Output
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Chlorpheniramine
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Heart Rate
;
Hemodynamics*
4.Prognostic Model for Survival and Recurrence in Patients with Early-Stage Cervical Cancer: A Korean Gynecologic Oncology Group Study (KGOG 1028)
E Sun PAIK ; Myong Cheol LIM ; Moon-Hong KIM ; Yun Hwan KIM ; Eun Seop SONG ; Seok Ju SEONG ; Dong Hoon SUH ; Jong-Min LEE ; Chulmin LEE ; Chel Hun CHOI
Cancer Research and Treatment 2020;52(1):320-333
Purpose:
We aimed to develop and validate individual prognostic models in a large cohort of cervical cancer patients that were primarily treated with radical hysterectomy.
Materials and Methods:
We analyzed 1,441 patients with early-stage cervical cancer treated between 2000 and 2008 from the Korean Gynecologic Oncology Group multi-institutional cohort: a train cohort (n=788) and a test cohort (n=653). Models predicting the risk for overall survival (OS), disease- free survival (DFS), lymphatic recurrence and hematogenous recurrence were developed using Cox analysis and stepwise backward selection and best-model options. The prognostic performance of each model was assessed in an independent patient cohort. Model-classified risk groups were compared to groups based on traditional risk factors.
Results:
Independent risk factors for OS, DFS, lymphatic recurrence, and hematogenous recurrence were identified for prediction model development. Different combinations of risk factors were shown for each outcome with best predictive value. In train cohort, area under the curve (AUC) at 2 and 5 years were 0.842/0.836 for recurrence, and 0.939/0.882 for OS. When applied to a test cohort, the model also showed accurate prediction result (AUC at 2 and 5 years were 0.799/0.723 for recurrence, and 0.844/0.806 for OS, respectively). The Kaplan-Meier plot by proposed model-classified risk groups showed more distinctive survival differences between each risk group.
Conclusion
We developed prognostic models for OS, DFS, lymphatic and hematogenous recurrence in patients with early-stage cervical cancer. Combining weighted clinicopathologic factors, the proposed model can give more individualized predictions in clinical practice.