1.Cumulus and granulosa cell biomarkers: a good predictor for successful oocyte and embryo developmental competence in human in vitro fertilization
Journal of Genetic Medicine 2021;18(1):1-7
The oocyte quality is of great importance in infertility as it reflects the follicle developmental potential and further affects the embryo development, clinical pregnancy outcomes. The analysis of gene expression in somatic cells is an important study to better clinical in vitro fertilization (IVF) outcomes in embryo selection reflecting the appropriate communication between the oocyte and somatic cells. Specifically, somatic cell transcriptomic technology can help assess biomarkers of oocyte and embryo ability. The present article aims to overview the basic aspect of folliculogenesis and review studies involving changes in candidate gene expression of cumulus or granulosa cell related to clinical outcomes in human IVF.
2.Cumulus and granulosa cell biomarkers: a good predictor for successful oocyte and embryo developmental competence in human in vitro fertilization
Journal of Genetic Medicine 2021;18(1):1-7
The oocyte quality is of great importance in infertility as it reflects the follicle developmental potential and further affects the embryo development, clinical pregnancy outcomes. The analysis of gene expression in somatic cells is an important study to better clinical in vitro fertilization (IVF) outcomes in embryo selection reflecting the appropriate communication between the oocyte and somatic cells. Specifically, somatic cell transcriptomic technology can help assess biomarkers of oocyte and embryo ability. The present article aims to overview the basic aspect of folliculogenesis and review studies involving changes in candidate gene expression of cumulus or granulosa cell related to clinical outcomes in human IVF.
3.Platelet-rich plasma treatment in patients with refractory thin endometrium and recurrent implantation failure: A comprehensive review
Min Kyoung KIM ; Haengseok SONG ; Sang Woo LYU ; Woo Sik LEE
Clinical and Experimental Reproductive Medicine 2022;49(3):168-174
Refractory thin endometrium and recurrent implantation failure are among the most challenging infertility-related factors hindering successful pregnancy. Several adjuvant therapies have been investigated to increase endometrial thickness and the pregnancy rate, but the treatment effect is still minimal, and for many patients, these treatment methods can be quite costly and difficult to approach. Platelet-rich plasma (PRP) is an autologous concentration of platelets in plasma and has recently been elucidated as a better treatment option for these patients. PRP is rich in cytokines and growth factors, which are suggested to exert a regenerative effect at the level of the injured tissue. Another advantage of PRP is that it is easily obtained from the patient’s own blood. We aimed to review the recent findings of PRP therapy used for patients with refractory thin endometrium and recurrent implantation failure.
4.Clinical Study of Tuberculous Peritonitis.
Nam Sik KU ; Eun Kyung PARK ; Sang Woo LYU ; Sung Jong LEE ; Chae Chun RHIM ; Sung Eun NAMKOONG
Korean Journal of Obstetrics and Gynecology 2002;45(11):1961-1965
OBJECTIVE: The aim of this study is to evaluate the clinicopathologic characteristics of tuberculous peritontitis from calcinomatosis peritonei. METHODS: From July 1994 to May 2002, fifteen women who were diagnosed tuberculous peritonitis in Kangnam St. Mary's Hospital were analyzed. We reviewed their medical records. RESULTS: A total of 15 patients eventually diagnosed by pathological or bacteriological method were reveiwed. Five patients were taken explorative lapartomy and biopsy. Eight patiets were taken laparoscopy and biopsy. One patient shows M. tubcerculous only cutured in ascites. One patient with cervical lyhphadenopathy shows chronic granuloma on cervical lymph node. CONCLUSION: Tuberculous peritonitis needs differential diagnosis with ovarian cancer because of its vague symptoms as ascites, abdominal pain and fever. Since there is no specific and sensitive method, at present, an explorative laparotomy or pelviscopic surgery can be alternatives for differetial diagnosis between tuberculous peritonitis and ovarian cancer.
Abdominal Pain
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Ascites
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Biopsy
;
Diagnosis
;
Diagnosis, Differential
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Female
;
Fever
;
Granuloma
;
Humans
;
Laparoscopy
;
Laparotomy
;
Lymph Nodes
;
Medical Records
;
Ovarian Neoplasms
;
Peritonitis, Tuberculous*
5.The Present Conditions of Clinical Clerkship Management in Korea.
Sang Hyun KIM ; Eun Bae YANG ; Duck Sun AHN ; Woo Tack JEON ; Chuhl Joo LYU
Korean Journal of Medical Education 2009;21(4):373-383
PURPOSE: This study investigated the present conditions of clinical clerkship management in Korea to make recommendations for it. METHODS: The data were collected between April 15 and May 30 in 2009 using questionnaires that were sent to the clerkship directors of 41 colleges of medicine and medical graduate schools. RESULTS: The elective course system was established in 78% of the institutions; the 6 core specialties were found in all medical schools. The duration of clerkship was longest in internal medicine, followed by surgery, pediatrics, obstetrics and gynecology, psychiatry, and emergency medicine. There were differences between the planning and monitoring agencies. Preclinical courses existed in 92.7% of the institutions. However, much more remains to be done ie, with regard to the issues of student assessment in clinical clerkship, faculty development programs for the faculty and residents, incentive systems for educational involvement, provisions for yearly systematic clerkships, integration of basic-clinical science-medical humanities, and community-based education. CONCLUSION: Because clinical clerkship education is very important as a core curriculum, curriculum planning and its management must be given adequate attention. The following measures are suggested: elective systems that allow students to choose by career planning; concerns over faculty development programs for residents as a teacher; consensus on the concept, objectives, duration, content, evaluation tools of pre-clinical clerkship and clinical clerkship, and student well-being; and emphasis on community-based education.
Clinical Clerkship
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Clinical Competence
;
Consensus
;
Curriculum
;
Education, Medical
;
Emergency Medicine
;
Gynecology
;
Humanities
;
Humans
;
Internal Medicine
;
Korea
;
Motivation
;
Obstetrics
;
Pediatrics
;
Schools, Medical
;
Surveys and Questionnaires
6.The impact of post-warming culture duration on clinical outcomes of vitrified-warmed single blastocyst transfer cycles
Ji Young HWANG ; Jae Kyun PARK ; Tae Hyung KIM ; Jin Hee EUM ; HaengSeok SONG ; Jin Young KIM ; Han Moie PARK ; Chan Woo PARK ; Woo Sik LEE ; Sang Woo LYU
Clinical and Experimental Reproductive Medicine 2020;47(4):312-318
Objective:
The objective of the study was to compare the effects of long-term and short-term embryo culture to assess whether there is a correlation between culture duration and clinical outcomes.
Methods:
Embryos were divided into two study groups depending on whether their post-warming culture period was long-term (20–24 hours) or short-term (2–4 hours). Embryo morphology was analyzed with a time-lapse monitoring device to estimate the appropriate timing and parameters for evaluating embryos with high implantation potency in both groups. Propensity score matching was performed to adjust the confounding factors across groups. The grades of embryos and blastoceles, morphokinetic parameters, implantation rate, and ongoing pregnancy rate were compared.
Results:
No significant differences were observed in the implantation rate or ongoing pregnancy rate between the two groups (56.3% vs. 67.9%, p=0.182; 47.3% vs. 53.6%, p=0.513). After warming, there were more expanded and hatching/hatched blastocysts in the long-term culture group than in the short-term culture group, but there was no significant between-group difference in embryo grade. Regarding pregnancy outcomes, the completion of re-expansion was faster in women who became pregnant than in those who did not for both culture durations (long-term: 2.19±0.63 vs. 4.11±0.81 hours, p=0.003; short-term: 1.17±0.29 vs. 1.94±0.76 hours, p=0.018, respectively).
Conclusion
The outcomes of short-term culture and long-term culture were not significantly different in vitrified-warmed blastocyst transfer. Regardless of the post-warming culture time, the degree of blastocyst re-expansion 3–4 hours after warming is an important marker for embryo selection.
7.Application of serum anti-Müllerian hormone levels in selecting patients with polycystic ovary syndrome for in vitro maturation treatment.
Hyun Ha SEOK ; Haengseok SONG ; Sang Woo LYU ; You Shin KIM ; Dong Ryul LEE ; Woo Sik LEE ; Tae Ki YOON
Clinical and Experimental Reproductive Medicine 2016;43(2):126-132
OBJECTIVE: The purpose of this study was to identify useful clinical factors for the identification of patients with polycystic ovary syndrome (PCOS) who would benefit from in vitro maturation (IVM) treatment without exhibiting compromised pregnancy outcomes. METHODS: A retrospective cohort study was performed of 186 consecutive patients with PCOS who underwent human chorionic gonadotropin-primed IVM treatment between March 2010 and March 2014. Only the first IVM cycle of each patient was included in this study. A retrospective case-control study was subsequently conducted to compare pregnancy outcomes between IVM and conventional in vitro fertilization (IVF) cycles. RESULTS: Through logistic regression analyses, we arrived at the novel finding that serum anti-Müllerian hormone (AMH) levels and the number of fertilized oocytes in IVM were independent predictive factors for live birth with unstandardized coefficients of 0.078 (95% confidence interval [CI], 1.005-1.164; p=0.037) and 0.113 (95% CI, 1.038-1.208; p=0.003), respectively. Furthermore, these two parameters were able to discriminate patients who experienced live births from non-pregnant IVM patients using cut-off levels of 8.5 ng/mL and five fertilized oocytes, respectively. A subsequent retrospective case-control study of patients with PCOS who had serum AMH levels ≥8.5 ng/mL showed that IVM had pregnancy outcomes comparable to conventional IVF, and that no cases of ovarian hyperstimulation syndrome were observed. CONCLUSION: Serum AMH levels are a useful factor for predicting pregnancy outcomes in PCOS patients before the beginning of an IVM cycle. IVM may be an alternative to conventional IVF for PCOS patients if the patients are properly selected according to predictive factors such as serum AMH levels.
Case-Control Studies
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Chorion
;
Cohort Studies
;
Female
;
Fertilization in Vitro
;
Humans
;
In Vitro Oocyte Maturation Techniques
;
In Vitro Techniques*
;
Live Birth
;
Logistic Models
;
Oocytes
;
Ovarian Hyperstimulation Syndrome
;
Polycystic Ovary Syndrome*
;
Pregnancy
;
Pregnancy Outcome
;
Pregnancy Rate
;
Retrospective Studies
8.Anti-Mullerian hormone levels as a predictor of clinical pregnancy in in vitro fertilization/intracytoplasmic sperm injection-embryo transfer cycles in patients over 40 years of age.
Hyun Jong PARK ; Sang Woo LYU ; Hyun Ha SEOK ; Tae Ki YOON ; Woo Sik LEE
Clinical and Experimental Reproductive Medicine 2015;42(4):143-148
OBJECTIVE: The aim of the current study was to determine the predictive value of anti-Mullerian hormone (AMH) levels for pregnancy outcomes in patients over 40 years of age who underwent in vitro fertilization or intracytoplasmic sperm injection-embryo transfer (IVF/ICSI-ET) cycles. METHODS: We retrospectively analyzed the medical records of 188 women aged 40 to 44 years who underwent IVF/ICSI-fresh ET cycles due to unexplained infertility in the fertility center of CHA Gangnam Medical Center. Patients were divided into group A, with AMH levels <1.0 ng/mL (n=97), and group B, with AMH levels > or =1.0 ng/mL (n=91). We compared the clinical pregnancy rate (CPR) in the two groups and performed logistic regression analysis to identify factors that had a significant effect on the CPR. RESULTS: The CPR was significantly lower in group A than group B (7.2% vs. 24.2%, p<0.001). In multivariate logistic regression analysis, AMH levels were the only factor that had a significant impact on the CPR (odds ratio, 1.510; 95% confidence interval, 1.172-1.947). The area under the receiver operating characteristic curve for AMH levels as a predictor of the CPR was 0.721. When the cut-off level of AMH was set at 1.90 ng/mL, the CPR was 6.731-fold higher in the group with AMH levels > or =1.90 ng/mL than in the group with AMH levels <1.90 ng/mL (p<0.001). CONCLUSION: Our study showed that AMH levels were predictive of clinical pregnancy in infertility patients over 40 years of age. Further prospective studies should be conducted to validate the predictive capability of AMH levels for the outcome of clinical pregnancy.
Anti-Mullerian Hormone*
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Cardiopulmonary Resuscitation
;
Female
;
Fertility
;
Fertilization in Vitro
;
Humans
;
Infertility
;
Logistic Models
;
Medical Records
;
Pregnancy Outcome
;
Pregnancy Rate
;
Pregnancy*
;
Prospective Studies
;
Retrospective Studies
;
ROC Curve
;
Spermatozoa*
9.A case of abdominal pregnancy on abdominal scar following in vitro fertilization and embryo transfer in a patient with bilateral tubal obstruction.
Hyun Ha SEOK ; Woo Sik LEE ; Tae Ki YOON ; Soo Hee KIM ; Hyung Jae WON ; You Shin KIM ; Sang Woo LYU
Korean Journal of Obstetrics and Gynecology 2008;51(3):355-358
Abdominal pregnancy is a rare event following in vitro fertilization and embryo transfer. In case of early abdominal pregnancy, it is difficult to diagnose and treat early because of nonspecific symptoms. The abdominal pregnancy in a woman with tubal obstruction is very exceptional and an abdominal pregnancy on abdominal scar have not been reported. We reported the first abdominal pregnancy on abdominal scar following in vitro fertilization and embryo transfer in a woman with unilateral salpingectomy and contralateral tubal obstruction.
Cicatrix
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Embryo Transfer
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Embryonic Structures
;
Fallopian Tube Diseases
;
Female
;
Fertilization in Vitro
;
Humans
;
Pregnancy
;
Pregnancy, Abdominal
;
Pregnancy, Ectopic
;
Salpingectomy
10.Efficacy of intralipid administration to improve in vitro fertilization outcomes: A systematic review and meta-analysis
E Jung HAN ; Hye Nam LEE ; Min Kyoung KIM ; Sang Woo LYU ; Woo Sik LEE
Clinical and Experimental Reproductive Medicine 2021;48(3):203-210
We performed a systematic review and meta-analysis to evaluate whether intralipid administration improved the outcomes of in vitro fertilization. Online databases (PubMed, Cochrane Library, Medline, and Embase) were searched until March 2020. Only randomized controlled trials (RCTs) that assessed the role of intralipid administration during in vitro fertilization were considered. We analyzed the rates of clinical pregnancy and live birth as primary outcomes. Secondary outcomes included the rates of chemical pregnancy, ongoing pregnancy, and missed abortion. We reviewed and assessed the eligibility of 180 studies. Five RCTs including 840 patients (3 RCTs: women with repeated implantation failure, 1 RCT: women with recurrent spontaneous abortion, 1 RCT: women who had experienced implantation failure more than once) met the selection criteria. When compared with the control group, intralipid administration significantly improved the clinical pregnancy rate (risk ratio [RR], 1.48; 95% confidence interval [CI], 1.23–1.79), ongoing pregnancy rate (RR, 1.82; 95% CI, 1.31–2.53), and live birth rate (RR, 1.85; 95% CI, 1.44–2.38). However, intralipid administration had no beneficial effect on the miscarriage rate (RR, 0.75; 95% CI, 0.48–1.17). A funnel plot analysis revealed no publication bias. Our findings suggest that intralipid administration may benefit women undergoing in vitro fertilization, especially those who have experienced repeated implantation failure or recurrent spontaneous abortion. However, larger, well-designed studies are needed to confirm these findings.