1.In vitro 31P NMR spectroscopic assessment of the endurance and recovery capacity of skeletal muscle: comparison between the sedentaries and canoe athletes.
Tae Hawn LIM ; Tae Keun LEE ; Ki Hong SEONG ; Chi Woong MUN ; Sang Tae KIM ; Myung Jin SHIN
Journal of the Korean Radiological Society 1992;28(5):776-782
In vivo 31P NMR spectroscopic study of forearm wrist flexor muscles was performed in two groups of volunteers composed respectively of 6 sedentaries and 6 canoe athletes. A continuous isometric contraction of endurance exercises was adopted in oder to assess the endurance capacity and recovery potential of skeletal muscles. Differences in high energy phosphorus metabolism between the sedentaries and athletes were evaluated with and emphasis on the intracellular pH and Pi/PCr ratio as indicators of high energy phosphorus metabolism. There were no differences of baseline pH and Pi/PCr ratio between the two groups. The athletes sustained the exercise at more acidic intracellular pH and at a higher Pi/PCr ratio of intracellular conditions for an all-out than did the sedentaries. The recovery rate of pH showed no difference between the two groups. There was a tendency of faster recovery of Pi/PCr in athletes showing half recovery time(T1/2) of 39.0±3.0 seconds as compared to that of sedentaries (55.7±7.5 seconds). The recovery rate of Pi/PCr as a function of Pi/PCr ratio at a given period of time was significantly faster in athletes than in sedentaries (P<0.001). The correlation coefficient of the recovery rate of Pi/PCr against the Pi/PCr ratio was 0.985 and 0.914 respectively for the athletes and sedentaries. The pH and the Pi/PCR ratio at an all-out state can be used as indicators of endurance capacity and the recovery rate of Pi/PCr, as a reovery potential of skeletal muscles.
Athletes*
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Exercise
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Forearm
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Humans
;
Hydrogen-Ion Concentration
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In Vitro Techniques*
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Isometric Contraction
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Metabolism
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Muscle, Skeletal*
;
Muscles
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Phosphorus
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Volunteers
;
Wrist
2.Life-Threatening Complication after Extracorporeal Shock Wave Lithotripsy for a Renal Stone: A Hepatic Subcapsular Hematoma.
Tae Beom KIM ; Ho Ki PARK ; Kwang Yeom LEE ; Khae Hawn KIM ; Han JUNG ; Sang Jin YOON
Korean Journal of Urology 2010;51(3):212-215
Extracorporeal shock wave lithotripsy (ESWL) has revolutionized the management of urolithiasis since it was first introduced in 1980. ESWL is a well-established, safe and effective therapeutic alternative to surgical treatment for urolithiasis. Complications of ESWL do occur in a small number of patients, and when they do, they typically involve the kidney. We present a case of a young female patient who developed a huge hepatic subcapsular hematoma accompanied by hypovolemic shock after ESWL for a 9 mm stone in the right kidney. The hematoma measured 13x6 cm. Conservative care with no surgical intervention was chosen because there was no evidence of active bleeding on the computed tomography. After conservative therapy, the hematoma was gradually absorbed and the patient was discharged.
Female
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Hematoma
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Hemorrhage
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Humans
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Kidney
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Lithotripsy
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Shock
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Urolithiasis
3.What is the best Treatment of Penile Fractures? Conservative or Surgical?: Experience in 34 cases.
Sang Jin YOON ; Ho Ki PARK ; Han JUNG ; Kwan Joong JOO ; Khae Hawn KIM
Korean Journal of Andrology 2010;28(1):22-27
PURPOSE: Penile fracture is described as a traumatic rupture of the tunica albuginea because of blunt injury of an erect penis. In this study, we aimed to compare conservative and surgical treatment modalities. MATERIALS AND METHODS: We retrospectively reviewed the medical records of 34 patients who visited our hospital with penile fracture and two treatment modalities were compared: conservative (Group I) and surgical (Group II). The five men who refused surgical treatment were treated conservatively, and the other 29 patients underwent surgical treatment. RESULTS: The most common cause of fracture was sexual intercourse (21/34, 61.8%). The most common sites of fracture were the right (67.6%), ventral (67.6%), and proximal (47.1%) parts of the penis. In Group II, only complication was painful erection (2/29, 6.9%), whereas in group I, 80% (4/5) suffered complications such as wound infection, painful erection, penile nodules with curvature, and erectile dysfunction. All patients treated with surgery successfully recovered without erectile dysfunction. CONCLUSIONS: Because surgical management gives excellent results, shorter hospitalization, less morbidity, surgical treatment is more effective approach than conservative treatment.
Coitus
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Erectile Dysfunction
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Hospitalization
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Humans
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Male
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Medical Records
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Penile Erection
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Penis
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Retrospective Studies
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Rupture
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Urologic Surgical Procedures, Male
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Wound Infection
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Wounds, Nonpenetrating
4.The Establishment of Dendritic Cell-Tumor Fusion Vaccines for Hormone Refractory Prostate Cancer Cell.
Tae Beom KIM ; Ho Ki PARK ; Joo Hyun CHANG ; In Ho CHOI ; Khae Hawn KIM ; Sang Jin YOON ; Min Sung LEE ; Han JUNG ; Choung Soo KIM
Korean Journal of Urology 2010;51(2):139-144
PURPOSE: Dendritic cell (DC)-based tumor vaccine is an attractive modality for the treatment of hormone-refractory prostate cancer (HRPC) because it has some efficacy and few side effects in patients with poor general conditions. The aim of this study was to establish which is the most effective DC vaccine for the treatment of HRPC. We compared DC vaccine sensitized with tumor lysate and a fusion vaccine of DCs and tumor cells. MATERIALS AND METHODS: The DU145 cancer cell line was purchased from the American Type Culture Collection. DCs were cultured from peripheral blood monocytes. Peripheral blood monocytes were cultured in RPMI 1640 medium supplemented with interleukin-4 (IL-4), granulocyte-macrophage colony-stimulating factor, and 10% fetal calf serum. Tumor necrosis factor-alpha was added on day 7 to support maturation. Functional activity was measured in three groups: the DC single-culture group, the DC culture group with DC vaccine sensitized with tumor lysates, and the DC culture group prepared with tumor fusion vaccine made from irradiated tumor cells and monocyte-derived DCs by the polyethylene glycol method. RESULTS: By FACS analysis, the rate of DC-tumor fusion vaccine was 20.3+/-3%. The IL-12 level produced by the DC-tumor fusion vaccine was significantly higher than that of DCs pulsed with tumor lysate (p<0.05). Also, the generation of interferon-gamma by tumor-specific T cells in the DC-tumor fusion vaccine group was superior to that of DCs pulsed with tumor lysate (p<0.05). In addition, the T cells of the tumor lysate-pulsed DCs and tumor fusion vaccine had 1.6 and 2.5 times the functional activity, respectively, of the DC single-culture group in killing tumor cells in the cytotoxicity assay. CONCLUSIONS: The DC-tumor fusion vaccine seems to be more effective than DC single-culture or DC-tumor lysate vaccine in the treatment of HRPC.
Cancer Vaccines
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Cell Line
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Dendritic Cells
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Granulocyte-Macrophage Colony-Stimulating Factor
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Homicide
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Humans
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Interferon-gamma
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Interleukin-12
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Interleukin-4
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Monocytes
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Polyethylene Glycols
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Prostate
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Prostatic Neoplasms
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T-Lymphocytes
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Tumor Necrosis Factor-alpha
;
Vaccines
5.Postpartum Emphysematous Cystitis after Casarean Section.
Ho Ki PARK ; Won Seok SIM ; In Ho CHOI ; Joo Hyun CHANG ; Khae Hawn KIM ; Han JUNG ; Sang Jin YOON ; Min Sung LEE ; Tae Beom KIM
Journal of the Korean Continence Society 2009;13(2):159-162
Emphysematous cystitis is a rare infectious condition of the urinary bladder. Underlying diabetes mellitus is present in over half of reported cases with women being affected twice as often as men. It also occurs in alcoholism, undernutrition, radiating and immunosuppressive treatments. We present a case of postpartum emphysematous cystitis after Casarean section (C-sec) in a young female without underlying disease.
Alcoholism
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Cystitis*
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Diabetes Mellitus
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Female
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Humans
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Male
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Malnutrition
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Postpartum Period*
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Urinary Bladder
6.The clinical, laboratory, and radiologic improvement due to siltuximab treatment in idiopathic multicentric Castleman’s disease
Gi-June MIN ; Young-Woo JEON ; Sung-Soo PARK ; Silvia PARK ; Seung-Hawn SHIN ; Seung-Ah YAHNG ; Jae-Ho YOON ; Sung-Eun LEE ; Byung-Sik CHO ; Ki-Seong EOM ; Yoo-Jin KIM ; Seok LEE ; Hee-Je KIM ; Chang-Ki MIN ; Dong-Wook KIM ; Jong-Wook LEE ; Seok-Goo CHO
The Korean Journal of Internal Medicine 2021;36(2):424-432
Background/Aims:
Idiopathic multicentric Castleman disease (iMCD) comprises approximately 30% of all cases of Castleman disease. It is characterized by constitutional symptoms, enlarged lymph nodes at multiple anatomical sites, and laboratory test abnormalities, which are primarily related to the overproduction of interleukin 6 (IL-6). Siltuximab is a human-mouse chimeric immunoglobulin G1κ monoclonal antibody against human IL-6. In view of the limited treatment options for iMCD, this study aimed to evaluate the efficacy and safety of siltuximab in the management of this condition.
Methods:
In this real-world retrospective study, we administered siltuximab to 15 patients with iMCD who previously received conventional chemotherapy and/or steroid pulse therapy. The median time to a durable symptomatic response was 22 days (range, 17 to 56). The serum hemoglobin and albumin levels and erythrocyte sedimentation rates significantly normalized after the first 3 months of siltuximab treatment. Lymph node involution, assessed using imaging, was relatively gradual, demonstrating a complete or partial response at 6 months.
Results:
On an average, the improvements in clinical, laboratory, and radiologic parameters of iMCD in responders were observed after one, three, and eight cycles of siltuximab treatment, respectively. Siltuximab demonstrated a favorable safety profile, and prolonged treatment was well-tolerated.
Conclusions
Despite the small sample size of the present study, the results are encouraging and demonstrate the potential of siltuximab as the first-line treatment of iMCD. Further large multicenter studies are needed to evaluate the clinical outcomes and adverse events associated with siltuximab.
7.Treatment for relapsed acute promyelocytic leukemia: what is the best post-remission treatment?
Gi-June MIN ; Byung-Sik CHO ; Sung-Soo PARK ; Silvia PARK ; Young-Woo JEON ; Seung-Ah YAHNG ; Seung-Hawn SHIN ; Jae-Ho YOON ; Sung-Eun LEE ; Ki-Seong EOM ; Yoo-Jin KIM ; Seok LEE ; Chang-Ki MIN ; Seok-Goo CHO ; Jong Wook LEE ; Hee-Je KIM
Blood Research 2022;57(3):197-206
Background:
Arsenic trioxide (ATO) is the standard treatment for relapsed acute promyelocytic leukemia (APL). However, consensus on post-remission therapies is still lacking.
Methods:
We evaluated 52 patients who experienced relapse following initial treatment of APL between 2000 and 2019 at Catholic Hematology Hospital. Among them, 41 patients received reinduction treatment, 30 with ATO-based regimen, whereas 11 with conventional intensive chemotherapy (IC).
Results:
The ATO reinduction group showed a significantly higher second molecular complete remission (mCR2) rate, superior neutrophil and platelet recovery, and a lower infection rate than the IC reinduction group. No significant differences were observed in survival outcomes after post-remission treatment among the ATO-based (N=19), autologous (N=12), and allogeneic (N=6) hematopoietic stem cell transplantation (HSCT) groups. In the ATO-based and autologous HSCT groups, among patients with mCR2 after ATO reinduction, nine and five patients experienced a second relapse, respectively (50.7% vs. 41.7%, P =0.878). Among these patients, seven received salvage allogeneic HSCT; six remained alive. The other seven patients received ATO without HSCT. Five died from disease progression, and two survived and have been in mCR2 since.
Conclusion
Post-remission treatment outcomes of patients with relapsed APL were not significantly different, regardless of the treatment option, suggesting the feasibility of ATO-based treatment without HSCT in mCR2. Allogeneic HSCT may be an effective salvage treatment modality for patients with a second relapse. Owing to a few cases of relapsed APL, multicenter prospective studies may help elucidate the efficacy of each post-remission treatment.
8.Clinical Significance of Epstein-Barr Virus Expression in Breast Cancer.
Tae Hyoung KIM ; Jun Hyun LEE ; Hak Jun SEO ; Ki Hawn KIM ; Ji Il KIM ; Chang Hyuck AN ; Woo Chan PARK ; Byung Joo SONG ; Se Jeong OH ; Sang Seol JUNG ; Keun Woo LIM ; Jeong Soo KIM
Journal of Korean Breast Cancer Society 2004;7(3):161-165
PURPOSE: Epstein-Barr Virus (EBV) is well understood as an oncogenic virus in human tumors. Its association with breast cancers has been reported but is still in controversy. So we have examined the expression of EBV in breast cancers and evaluated the relationship between the well-known prognositc factors of breast cancer and EBV expression. METHODS: A retrospective study was conducted with patients who had been re-evaluated to confirm the diagnosis based on immunohistochemical analysis with EBNA-2 expression, between January 1991 and December 2002. The cases were assigned to the positive lesion that displayed 10% or more of immunoreactive cells. RESULTS: The expressions of EBNA-2(Ebstein Barr virus nuclear antigen - 2) were noted in 26 (21.1%) out of 123 cases of breast cancer patients and 4 (20%) out of 20 cases in a control group of benign tumors. The expression of EBV in breast cancers and that of a control group were not different significantly. But, the correlation between the expression of EBNA-2 and ER status was noted statistically significant (P=0.040). CONCLUSION: Judging from the results of our study, EBV infection detected in breast cancer seems to be latent and the association of EBV to breast cancer is less likely related.
Breast Neoplasms*
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Breast*
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Diagnosis
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Epstein-Barr Virus Infections
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Herpesvirus 4, Human*
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Humans
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Oncogenic Viruses
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Retrospective Studies