1.Cilostazol Reduces PAC-1 Expression on Platelets in Ischemic Stroke.
Su Yun LEE ; Myong Jin KANG ; Jae Kwan CHA
Journal of Clinical Neurology 2008;4(4):148-152
BACKGROUND AND PURPOSE: Cilostazol, a phosphodiesterase III inhibitor, is known to be a useful antiplatelet agent that inhibits the progression of atherosclerosis in ischemic stroke. This study investigated the effects of combining cilostazol with aspirin on the expressions of P-selectin and PAC-1 on activated platelets in acute ischemic stroke. METHODS: We analyzed 70 patients with acute ischemic stroke (<72 hrs of an ischemic event). The daily intake was 100 mg of aspirin in 37 patients and 100 mg of aspirin plus 200 mg of cilostazol in 33 patients. The expressions of P-selectin and PAC-1 on activated platelets were measured on the day of admission and 5 days later. We also evaluated the clinical progression using the National Institutes of Health Stroke Scale (NIHSS) at the same times. RESULTS: After 5 days the extent of PAC-1 expression on activated platelets was significantly lower for combined aspirin and cilostazol treatment (61.0+/-19.3%, p=0.008; mean+/-standard deviation) than the baseline level (70.9+/-12.9%), but did not differ between aspirin alone (66.0 +/-19.0%) and baseline (70.1+/-15.7%). The expression of P-selectin did not differ between combined aspirin and cilostazol treatment and baseline. The clinical progression did not differ between the two groups, as indicated by the absence of significant changes on the NIHSS in the acute period. CONCLUSIONS:This study found that the combined regimen of aspirin and cilostazol exerts the beneficial effect of reducing PAC-1 activity on activated platelets in acute ischemic stroke. However, the clinical outcome of this regimen was no better than that of the aspirin-only regimen. Therefore, further detailed studies of the possible clinical benefits of cilostazol in acute ischemic stroke are needed.
Aspirin
;
Atherosclerosis
;
Blood Platelets
;
Cyclic Nucleotide Phosphodiesterases, Type 3
;
Humans
;
National Institutes of Health (U.S.)
;
P-Selectin
;
Stroke
;
Tetrazoles
2.Study of repuirements and conditions to be improved for voluntary occupational health program in worksite.
Jae Seok SONG ; Jong Uk WON ; Myong Sei SON ; Bong Suk CHA ; Jae Hoon ROH
Korean Journal of Preventive Medicine 1997;30(4):840-851
To perform voluntary occupational health program in worksites, regulational supports are necessary. The regulational supports include assessment of current occupational health program and appropriate incentives. The purpose of this study is to find out the requirements of voluntary occupational health program and conditions to be improved. Study population was industrial health managers of both industries with less than 300 workers and over 300 workers, and the member of labor union who is responsible for safety and health in worksite. Two different questionnaire were used to find out the requirements and conditions to be improved respectively. The results were; 1. The category which prevalence rate of occupational injuries and occupational disease should be lower than national average was most important in health managers employed in industries over 300 workers and followed by reporting system, education, worksite policy, work environment assessment, protective equipment, consequently. But those employed in industries less than 300 workers showed high importance in prevalence rate of occupational injuries and disease, reporting system, worksite policy, work environment assessment, protective equipment, education, consequently. 2. The members of labor union thought that worksite policy was most important and the next is education, reporting system, work environment assessment, protective equipment, prevalence rate of occupational injuries and disease. 3. There were difference in importance of education and worksite policy according to the size of industries. Reporting system, prevalence rate of occupational injuries and disease, and worksite policy had different importance between members of labor union and health managers. 4. In the results of questionnaire for conditions to be improved, the most important condition was top manager's willingness except personal protective equipments, and followed by financial support, legal support. The limitations of this study were the problems of representativeness of study population. but voluntary health program should be performed in worksites which have relatively good occupational health system. So, this selection bias could not disrupt our results.
Education
;
Financial Support
;
Humans
;
Labor Unions
;
Motivation
;
Occupational Diseases
;
Occupational Health*
;
Occupational Injuries
;
Prevalence
;
Surveys and Questionnaires
;
Selection Bias
;
Workplace*
3.Can Diffusion-Perfusion Mismatch on Brain MRI in Acute Ischemic Stroke Patients Predict Clinical Outcome?: Preliminary Study Focused on rCBV.
Hyung Won JEON ; Ji Hye KANG ; Su Yun LEE ; Yu Sil LEE ; Myong Jin KANG ; Jae Kwan CHA
Journal of the Korean Neurological Association 2008;26(4):295-300
BACKGROUND: Diffusion-perfusion mismatch (DPM) on MRI has been considered an ischemic penumbra. However, several reports have demonstrated limitation of DPM on MRI as a predictable marker of the ischemic penumbra. In this study, we investigated the relationship between DPM and the clinical progression in acute ischemic stroke patients. METHODS: We consecutively recruited fifty-seven patients showing acute ischemic stroke (within 24 hours) in the middle cerebral artery (MCA) territory. The clinical outcomes were determined by serial measurement of National Institute of Health Stroke Scale (NIHSS) and modified Rankin Scale (mRS) during 30 days after their ischemic event. We also evaluated the relationship among the parameters of perfusion MRI and the clinical worsening in patients with DPM on initial MRI. RESULTS: Nineteen (33.3%) patients had DPM on MRI within 24 hours after stroke onset. Even though the frequency of clinical worsening for 30 days after stroke onset was higher in DPM group (26%) than in non-DPM group (11%), it did not reach statistical significance (p=0.143). However, extent of MCA stenosis (p<0.001) and time to peak (TTP) delay on MRI (p<0.001) were significantly greater in patients with DPM than in those without DPM. Among several parameters of the perfusion MRI, only relative cerebral blood volume (rCBV) was significantly related to the clinical worsening (62.9+/-24.7% vs 96.1+/-19.2%, p=0.007) in patients with DPM. CONCLUSIONS: This study shows that DPM on MRI does not always predict the clinical worsening in acute ischemic stroke. To overcome this problem, we should analyze rCBV map based DPM as well as TTP map based DPM.
Blood Volume
;
Brain
;
Constriction, Pathologic
;
Diffusion
;
Humans
;
Magnetic Resonance Imaging
;
Middle Cerebral Artery
;
Perfusion
;
Stroke
;
Thymine Nucleotides
4.Revision Superficial Temporal Artery-Middle Cerebral Artery Bypass Surgery for Recurrent Acute Ischemic Stroke Due to Delayed Occlusion of the Bypass Graft.
Yun Hee CHOI ; Hyun Seok PARK ; Myong Jin KANG ; Jae Kwan CHA
Journal of Cerebrovascular and Endovascular Neurosurgery 2018;20(2):127-132
Intravenous thrombolysis (IVT) and endovascular treatment (EVT) are currently the main treatments for reperfusion in acute ischemic stroke. Although the EVT recanalization rate has increased, unsuccessful recanalization is still observed in 10-30% cases. Superficial temporal artery-middle cerebral artery (STA-MCA) bypass is considered a rescue therapy in such cases, but in most centers it is not usually performed for acute ischemic stroke. Graft occlusion is rare following STA-MCA bypass, but it might lead to recurrent ischemic stroke. We hereby report on a patient with right MCA infarction and in whom EVT failed due to complete proximal internal carotid artery occlusion. He underwent an emergency STA-MCA bypass, resulting in a full recovery of his motor weakness. However, six months later, the patient experienced recurrent acute ischemic stroke due to bypass graft occlusion. His EVT failed again but revision bypass surgery, using STA remnant branch, was successful with full motor weakness recovery. We recommend a revision bypass surgery as a feasible therapeutic option for recurrent cerebral infarction caused by delayed STA graft occlusion.
Carotid Artery, Internal
;
Cerebral Arteries*
;
Cerebral Infarction
;
Cerebral Revascularization
;
Emergencies
;
Graft Occlusion, Vascular
;
Humans
;
Infarction, Middle Cerebral Artery
;
Reoperation
;
Reperfusion
;
Stroke*
;
Transplants*
5.Position statements on genetic test for peritoneal, ovarian, and fallopian tubal cancers: Korean Society of Gynecologic Oncology (KSGO).
Min Chul CHOI ; Myong Cheol LIM ; Dong Hoon SUH ; Yong Jung SONG ; Tae Joong KIM ; Suk Joon CHANG ; Jae Weon KIM
Journal of Gynecologic Oncology 2016;27(4):e36-
No abstract available.
Fallopian Tube Neoplasms/*genetics
;
Female
;
Genes, BRCA1
;
Genes, BRCA2
;
*Genetic Testing
;
Humans
;
Mutation
;
Ovarian Neoplasms/*genetics
;
Peritoneal Neoplasms/*genetics
;
Republic of Korea
;
Societies, Medical
6.Position statements on genetic test for peritoneal, ovarian, and fallopian tubal cancers: Korean Society of Gynecologic Oncology (KSGO).
Min Chul CHOI ; Myong Cheol LIM ; Dong Hoon SUH ; Yong Jung SONG ; Tae Joong KIM ; Suk Joon CHANG ; Jae Weon KIM
Journal of Gynecologic Oncology 2016;27(4):e36-
No abstract available.
Fallopian Tube Neoplasms/*genetics
;
Female
;
Genes, BRCA1
;
Genes, BRCA2
;
*Genetic Testing
;
Humans
;
Mutation
;
Ovarian Neoplasms/*genetics
;
Peritoneal Neoplasms/*genetics
;
Republic of Korea
;
Societies, Medical
7.Effects of soft tissue grafting prior to orthodontic treatment on preventing gingival recession in dogs
Young Woo SONG ; Heekyu JUNG ; Seo Yeon HAN ; Kyeong-Won PAENG ; Myong Ji KIM ; Jae-Kook CHA ; Yoon Jeong CHOI ; Ui-Won JUNG
Journal of Periodontal & Implant Science 2020;50(4):226-237
Purpose:
This study was conducted to assess the efficacy of prophylactic gingival grafting in the mandibular anterior labial area for preventing orthodontically induced gingival recession.
Methods:
Eight mongrel dogs received gingival graft surgery at the first (I1) and third (I3) mandibular incisors on both sides based on the following group allocation: AT group (autogenous connective tissue graft on I1), AT-control group (contralateral side in the AT group), CM group (xenogeneic cross-linked collagen matrix graft on I3) and CM-control group (contralateral side in the CM group). At 4 weeks after surgery, 6 incisors were splinted and proclined for 4 weeks, followed by 16 weeks of retention. At 24 weeks after surgery, casts were made and compared with those made before surgery, and radiographic and histomorphometric analyses were performed.
Results:
Despite the proclination of the incisal tip (by approximately 3 mm), labial gingival recession did not occur. The labial gingiva was thicker in the AT group (1.85±0.50 mm vs.1.76±0.45 mm, P>0.05) and CM group (1.90±0.33 mm vs. 1.79±0.20 mm, P>0.05) than in their respective control groups.
Conclusions
The level of the labial gingival margin did not change following labial proclination of incisors in dogs. Both the AT and CM groups showed enhanced gingival thickness.
8.Minimally invasive surgery for radical hysterectomy in women with cervical cancer: Korean Society of Gynecologic Oncology, Korean Society of Obstetrics and Gynecology, and Korean Society of Gynecologic Endoscopy and Minimally Invasive Surgery position statement
Miseon KIM ; Tae Wook KONG ; Sunghoon KIM ; Seung Cheol KIM ; Yong Beom KIM ; Jae Weon KIM ; Jeong Yeol PARK ; Dong Hoon SUH ; Seung Hyuk SHIM ; Keun Ho LEE ; Sung Jong LEE ; Jae Kwan LEE ; Myong Cheol LIM
Journal of Gynecologic Oncology 2019;30(5):e104-
On the basis of emerging data and the current understanding of minimally invasive surgery (MIS) for radical hysterectomy (RH) in women with cervical cancer, the Korean Society of Gynecologic Oncology, Korean Society of Obstetrics and Gynecology, and Korean Society of Gynecologic Endoscopy and Minimally Invasive Surgery support the following recommendations: • According to the recently published phase III Laparoscopic Approach to Cervical Cancer (LACC) trial—a prospective randomized clinical trial—disease-free survival and overall survival rates of MIS RH are significantly lower than those of open RH. • Gynecologic oncologists should be aware of the emerging data on MIS RH for early-stage cervical cancer. • The results of the LACC trial, together with institutional data, should be discussed with patients before choosing MIS RH. • MIS RH should be performed for optimal candidates according to the current practice guidelines by gynecologic oncologists who are skilled at performing MIS.
Endoscopy
;
Female
;
Gynecology
;
Humans
;
Hysterectomy
;
Laparoscopy
;
Laparotomy
;
Minimally Invasive Surgical Procedures
;
Obstetrics
;
Prospective Studies
;
Survival Rate
;
Uterine Cervical Neoplasms
9.Bilateral salpingectomy to reduce the risk of ovarian/fallopian/peritoneal cancer in women at average risk: a position statement of the Korean Society of Obstetrics and Gynecology (KSOG).
Miseon KIM ; Young Han KIM ; Yong Beom KIM ; Jayeon KIM ; Jae Weon KIM ; Mi Hye PARK ; Joo Hyun PARK ; Jeong Ho RHEE ; Myong Cheol LIM ; Joon Seok HONG
Obstetrics & Gynecology Science 2018;61(5):542-552
Based on the current understanding of a preventive effect of bilateral salpingectomy on ovarian/fallopian/peritoneal cancers, the Korean Society of Obstetrics and Gynecology, Korean Society of Gynecologic Endocrinology, Korean Society of Gynecologic Oncology, Korean Society of Maternal Fetal Medicine, and Korean Society for Reproductive Medicine support the following recommendations:• Women scheduled for hysterectomy for benign gynecologic disease should be informed that bilateral salpingectomy reduces the risk of ovarian/fallopian/peritoneal cancer, and they should be counseled regarding this procedure at the time of hysterectomy.• Although salpingectomy is generally considered as a safe procedure in terms of preserving ovarian reserve, there is a lack of evidences representing its long-term outcomes. Therefore, patients should be informed about the minimal potential of this procedure for decreasing ovarian reserve.• Prophylactic salpingectomy during vaginal hysterectomy is favorable in terms of prevention of ovarian/fallopian/peritoneal cancer, although operation-related complications minimally increase with this procedure, compared to the complications associated with vaginal hysterectomy alone. Conversion to open or laparoscopic approach from vaginal approach to perform prophylactic salpingectomy is not recommended.• Women who desire permanent sterilization at the time of cesarean delivery could be counseled for prophylactic salpingectomy before surgery on an individual basis.
Endocrinology
;
Fallopian Tubes
;
Female
;
Genital Diseases, Female
;
Gynecology*
;
Humans
;
Hysterectomy
;
Hysterectomy, Vaginal
;
Obstetrics*
;
Ovarian Neoplasms
;
Ovarian Reserve
;
Prophylactic Surgical Procedures
;
Reproductive Medicine
;
Salpingectomy*
;
Sterilization
10.Six months response rate of combined oral medroxyprogesterone/levonorgestrel-intrauterine system for early-stage endometrial cancer in young women: a Korean Gynecologic-Oncology Group Study
Mi Kyoung KIM ; Seok Ju SEONG ; Soon Beom KANG ; Duk Soo BAE ; Jae Weon KIM ; Joo Hyun NAM ; Myong Cheol LIM ; Taek Sang LEE ; Sunghoon KIM ; Jiheum PAEK
Journal of Gynecologic Oncology 2019;30(2):e47-
OBJECTIVE: To evaluate the efficacy of combined oral medroxyprogesterone acetate (MPA)/levonorgestrel-intrauterine system (LNG-IUS) treatment and to compare the diagnostic accuracy of endometrial aspiration biopsy with dilatation & curettage (D&C) in young women with early-stage endometrial cancer (EC) who wished to preserve their fertility. METHODS: A prospective phase II multicenter study was conducted from January 2012 to January 2017. Patients with grade 1 endometrioid adenocarcinoma confined to the endometrium were treated with combined oral MPA (500 mg/day)/LNG-IUS. At 3 and 6 months of treatment, the histologic change of the endometrial tissue was assessed. The regression rate at 6 months treatment and the consistency of the histologic results between the aspiration biopsy and the D&C were evaluated. RESULTS: Forty-four patients were enrolled. Nine voluntarily withdrew and 35 patients completed the protocol treatment. The complete regression (CR) rate at 6 months was 37.1% (13/35). Partial response was shown in 25.7% of cases (9/35). There were no cases of progressive disease and no treatment-related complications. A comparison of the pathologic results from aspiration biopsy and D&C was carried out for 33 cases. Fifteen cases were diagnosed as “EC” by D&C. Among these, only 8 were diagnosed with EC from aspiration biopsy, yielding a diagnostic concordance of 53.3% (ĸ=0.55). CONCLUSION: Combined oral MPA/LNG-IUS treatment for EC showed 37.1% of CR rate at 6 months. Considering the short treatment periods, CR rate may be much higher if the treatment continued to 9 or 12 months. So, this treatment is still a viable treatment option for young women of early-stage EC. Endometrial aspiration biopsy with the LNG-IUS in place is less accurate than D&C for follow-up evaluation of patients undergoing this treatment. TRIAL REGISTRATION: ClinicalTrials.gov Identifier: NCT01594879
Biopsy, Needle
;
Carcinoma, Endometrioid
;
Dilatation and Curettage
;
Endometrial Neoplasms
;
Endometrium
;
Female
;
Fertility
;
Fertility Preservation
;
Follow-Up Studies
;
Humans
;
Levonorgestrel
;
Medroxyprogesterone Acetate
;
Prospective Studies