1.The Role of PKCzeta on MT1-MMP Expression with Shear Stress and Cyclic Strain in Microvascular Endothelial Cells.
Sang Seob YUN ; Ji Il KIM ; In Sung MOON
Journal of the Korean Society for Vascular Surgery 2007;23(2):120-127
PURPOSE: hear stress (SS) and cyclic strain (CS) influence the expression of membrane type 1-matrix metalloproteinase (MT1-MMP) in microvascular endothelial cells (MVECs). It is known that changes in the level of Sp1 phosphorylation are important for MT1-MMP expression following SS and CS. However, the exact mechanism underlying this process is poorly understood. The aim of this study was to determine the effect of PKCzeta on serine phosphorylation and activation of Sp1 in response to SS and CS. METHOD: MVECs were exposed to SS or CS for up to 8 hours with or without PKCzeta inhibitors. The activity and phosphorylation of Sp1 were assessed by Western blot analysis and immunoprecipitation. MT1-MMP protein expression was assessed by Western blot analysis. RESULT: PKCzeta was phosphorylated and activated under SS, whereas no significant changes were noted under CS. SS increased Sp1 phosphorylation in a time-dependent manner, but no changes in the Sp1 phosphorylation were observed when the MVECs were pretreated with the PKCzeta inhibitors. By contrast, MVECs exposed to CS in the presence or absence of PKCzeta inhibitors showed no change in the phosphorylation of Sp1. SS decreased MT1-MMP protein expression in a time-dependent manner, but in the presence of PKCzeta inhibitors, MT1-MMP expression was not changed compared with the static levels after SS. CS increases MT1-MMP expression in a time-dependent manner. Similar expression was observed when the cells were pretreated with PKCzeta inhibitors under CS. CONCLUSION: These data demonstrate that the increased affinity of Sp1 for the MT1-MMP's promoter site occurs because of PKCzeta induced phosphorylation of Sp1 in response to SS.
Blotting, Western
;
Endothelial Cells*
;
Immunoprecipitation
;
Matrix Metalloproteinase 14*
;
Membranes
;
Phosphorylation
;
Serine
2.The Correlation between Metabolic Syndrome and Urinary pH in Adult Korean Men Who Visited a Health Promotion Center.
Tae Sung JUNG ; Won Jae YANG ; Yun Seob SONG
Korean Journal of Urology 2009;50(7):694-698
PURPOSE: Low urinary pH is a risk factor for uric acid stones, and acidic urine has been described as a renal manifestation of the metabolic syndrome. We evaluated the association between metabolic syndrome and urinary pH in adult Korean men who visited a health promotion center. MATERIALS AND METHODS: From 2004 to 2008, a total of 18,513 adult men who visited our health promotion center were enrolled in this study. The relation between urinary pH and various parameters associated with the metabolic syndrome were evaluated. RESULTS: The average age was 45.6 years (range, 18-95 years), and 4987 men (26.9%) were classified as having the metabolic syndrome. The mean urinary pH of the metabolic syndrome group was 5.91, which was significantly lower than that of the normal group (6.08). In univariate and multivariate analysis, body mass index, serum triglyceride, and blood sugar were negatively correlated with urinary pH (p<0.05). In multivariate logistic regression analysis, obesity (body mass index > or =25 kg/m2), hypertriglyceridemia (> or =150 mg/dl), high fasting glucose (> or =110 mg/dl), and low high-density lipoprotein cholesterol (<45 mg/dl) were the significant factors that predicted low urinary pH (< or =5.5). CONCLUSIONS: Metabolic syndrome was related to lower urinary pH in ostensively healthy adult Korean men. Further studies are needed to elucidate the exact mechanism responsible for the lower urinary pH in individuals with the metabolic syndrome.
Adult
;
Blood Glucose
;
Body Mass Index
;
Cholesterol
;
Fasting
;
Glucose
;
Health Promotion
;
Humans
;
Hydrogen-Ion Concentration
;
Hypertriglyceridemia
;
Lipoproteins
;
Logistic Models
;
Male
;
Metabolic Syndrome X
;
Multivariate Analysis
;
Obesity
;
Risk Factors
;
Uric Acid
;
Urinalysis
3.Effects of Maeil Human Milk Fortifier on Growth and Bone Mineralization in Preterm Infants.
Jae Eun YU ; Ko Soo PAI ; Ju Yeon HAM ; Moon Sung PARK ; Sung Seob YUN
Journal of the Korean Society of Neonatology 2005;12(1):32-41
PURPOSE: A prospective, controlled trial was conducted to evaluate growth, bone mineralization, and nutritional status receiving preterm human milk supplemented with a newly formulated Maeil human milk fortifier. METHODS: Twenty five fortified human milk-fed and preterm formula-fed infants with a birth weight < 1, 800 g and gestational age <35 weeks, who were born at Ajou University Hospital from March, 2003 through August, 2004 were studied. Growth, biochemical indices of bone mineralization, feeding tolerance, morbidity and wrist X-ray were assessed serially. Total body bone mineral density was measured by dual energy X-ray absorptiometry at 2 and 5months of age. RESULTS: There were no differences in growth, including weight, height and head circumference, between two groups. Serum Ca, P, ALP and other biochemical indices were similar. Although low grade rickets (grade I and II) were occasionally found on wrist X-ray, the rate of occurrence and severity were similar. The bone mineral densities of both group showed no difference. CONCLUSION: The fortified human milk-fed infants and preterm formula-fed infants showed no difference in growth, and bone mineralization. This newly formulated Maeil human milk fortifier can be safely used in preterm infants.
Absorptiometry, Photon
;
Birth Weight
;
Bone Density
;
Calcification, Physiologic*
;
Gestational Age
;
Head
;
Humans*
;
Infant
;
Infant, Newborn
;
Infant, Premature*
;
Milk, Human*
;
Nutritional Status
;
Prospective Studies
;
Rickets
;
Wrist
4.A Case of Prenatal Diagnosis of Thoracic Ectopia Cordis.
Seong Joon YOON ; Bong Shik SHIN ; Kyo Weon LEE ; Hye Sup SONG ; Jong Seul HAN ; Sung Do KIM ; Joo Seob KEUM ; Myung Sook KIM ; Tae Yun OH
Korean Journal of Obstetrics and Gynecology 1997;40(10):2317-2321
Ectopia cordis is defined as a congenital malposition of the heart partially or completely outside the thorax and often associated with sternal and congenital heart defects:surgical repair is generally unsuccessful because of the magnitude of the deformity and the associat-ed intracardiac anormalies. Four types of ectopia cordis are described : cervical, thoracic, abdominal and thoracoa- bdominal. Cervical and thoracic type are often fatal within days, because the heart is expo- sed and malformed. Abdominal type carries a better prognosis because cardiac abnormalities are less often found. The prognosis of thoraco-abdominal type mainly depends on the pre- sence of intracardiac abnormalities. We have experienced a case of thoracic ectopia cordis at 25 weeks' gestation by ultra- sonography, so present the case and the review with literature briefly.
Congenital Abnormalities
;
Ectopia Cordis*
;
Heart
;
Pregnancy
;
Prenatal Diagnosis*
;
Prognosis
;
Thorax
5.Histo-immunological Effect of Exogenous Testosterone on the Experimentally Induced Autoimmune Mouse Prostatitis.
Sung Joon HONG ; Dong Soo PARK ; Byung Ha CHUNG ; Yun Seob SONG ; Dong Hyeon LEE
Korean Journal of Urology 1996;37(11):1193-1200
The goal of this study was to examine the characteristics of the histo- immunological changes following induction of autoimmune prostatic inflammation achieved by subcutaneous allograft injection of the tissue homogenate of mouse ventral prostate. We also investigated the effect of the administration of androgen upon the development of mouse autoimmune prostatitis. Eight week old male C57BL/6 mice were selected and the presence, location and the degree of inflammation were identified after injection. The extent of infiltrations of the inflammatory cells in the prostate following the administration of the exogenous testosterone, the variation of the CD4/CD8 ratio of splenic lymphocyte and the variations of the interleukin-2 and tumor necrosis factor-alpha secreted by the splenic cells were also examined. The autoimmune prostatitis of the mouse induced by subcutaneous allograft injection of the mouse ventral prostate showed histological findings similar to that of human. The degree of induction was in proportion to the amount of tissues injected and showed organ-specificity. Exogenous administration of testosterone resulted in partial inhibitory effect on the induction of inflammation which was thought to be related to the decrease in the CD8+ T lymphocyte count and the functional inhibitory effect of the splenic T lymphocyte on the production of Interleukin- 2. However, tumor necrosis factor-alpha is presumed to be not closely related to the inhibitory effect of the administration of testosterone. In the future, further studies on the variation of cytokine levels and the value of sex hormones within the prostate and, moreover investigations in related to the humoral immune mechanism should be encouraged.
Allografts
;
Animals
;
Gonadal Steroid Hormones
;
Humans
;
Inflammation
;
Interleukin-2
;
Lymphocyte Count
;
Lymphocytes
;
Male
;
Mice*
;
Prostate
;
Prostatitis*
;
Testosterone*
;
Tumor Necrosis Factor-alpha
6.Effect of Cytokines on Human Sperm Motility.
Moo Sang LEE ; Yun Seob SONG ; Sung Joon HONG ; Dong Hyeon LEE
Korean Journal of Andrology 1998;16(1):55-60
PURPOSE: Inflammatory white blood cells are related to semen quality, affection fertility. In these cases, inflammatory cytokines are present in increased quantities, and this increase may be related to sperm motility. We examined changes in measures of motility after administration of cytokines to sperm in vitro. MATERIALS AND METHODS: Semen from 30 healthy men were obtained. With the swim-up procedure, actively motile sperm were isolated and incubated in Ham's F10 culture medium. Interleukin(IL)-1 alpha(10ng/mL) was added, and measures of sperm motility were examined ater 5 and 24 hours using the Hamilton-Thorne computer semen analysis system. These measures were expressed as a percentage of the values before incubation. RESULTS: The decreases of the average path velocity (VAP) in the IL-1 alpha-treated and IL-8treated specimens after 24 hours are statistically significant. None of the decrease in values for straight-line velocity (VSL) is statistically significant. There were statistically significant decreases in the curvilinear velocity (VCL)in IL-6-treated and TNF-1 alpha-treated specimens after 24 hours. None of the changes in the lateral head displacement (ALH)or the beat cross frequency (BCF)was statistically significant. CONCLUSION: The administration of cytokines decreases sperm motility in vitro. It is suggested that seminal cytokines may affect sperm motility in vivo.
Cytokines*
;
Fertility
;
Head
;
Humans*
;
Interleukin-1
;
Leukocytes
;
Male
;
Semen
;
Semen Analysis
;
Sperm Motility*
;
Spermatozoa*
7.Effect of Cytokines on Human Sperm Motility.
Moo Sang LEE ; Yun Seob SONG ; Sung Joon HONG ; Dong Hyeon LEE
Korean Journal of Andrology 1998;16(1):55-60
PURPOSE: Inflammatory white blood cells are related to semen quality, affection fertility. In these cases, inflammatory cytokines are present in increased quantities, and this increase may be related to sperm motility. We examined changes in measures of motility after administration of cytokines to sperm in vitro. MATERIALS AND METHODS: Semen from 30 healthy men were obtained. With the swim-up procedure, actively motile sperm were isolated and incubated in Ham's F10 culture medium. Interleukin(IL)-1 alpha(10ng/mL) was added, and measures of sperm motility were examined ater 5 and 24 hours using the Hamilton-Thorne computer semen analysis system. These measures were expressed as a percentage of the values before incubation. RESULTS: The decreases of the average path velocity (VAP) in the IL-1 alpha-treated and IL-8treated specimens after 24 hours are statistically significant. None of the decrease in values for straight-line velocity (VSL) is statistically significant. There were statistically significant decreases in the curvilinear velocity (VCL)in IL-6-treated and TNF-1 alpha-treated specimens after 24 hours. None of the changes in the lateral head displacement (ALH)or the beat cross frequency (BCF)was statistically significant. CONCLUSION: The administration of cytokines decreases sperm motility in vitro. It is suggested that seminal cytokines may affect sperm motility in vivo.
Cytokines*
;
Fertility
;
Head
;
Humans*
;
Interleukin-1
;
Leukocytes
;
Male
;
Semen
;
Semen Analysis
;
Sperm Motility*
;
Spermatozoa*
8.Production and Characterization of Egg Yolk Antibodies to Human Rotavirus.
Dong Kyuk JUNG ; Kang Young KIM ; Shien Young KANG ; Han Soo JOO ; Hoo Kil JUNG ; Sung Seob YUN ; Suk Lak JUHN
Journal of Bacteriology and Virology 2001;31(4):379-385
No abstract available.
Antibodies*
;
Egg Yolk*
;
Humans*
;
Ovum*
;
Rotavirus*
9.Traumatic Diaphragmatic Hernia with Delayed Presentation in an Adult.
Joon Kyoung SUNG ; Sang Seob YUN ; Jong Kyung PARK ; Seung Hye CHOI ; Seong LEE
Journal of the Korean Surgical Society 2004;66(1):67-71
A diaphragmatic hernia in adult can result from delayed presentation of congenital or traumatic diaphragmatic defect. of all congenital diaphragmatic hernia, 5~25% present beyond the neonatal period. Diaphragmatic injury due to blunt or penetrating truncal trauma is relatively common, and can be missed during immediate posttraumatic period. If the diaphragmatic injury is not recognized at the time of the initial trauma, the patient may recover and remain symptom free, or suffer from chronic nonspecific abdominal and/or chest symptoms. After a variable interval acute symptom associated with intestinal obstruction or strangulation can arise because of a herniation of the abdominal organs through the diaphragmatic defect. A delay in diagnosis may occur and be associated with a high morbidity, so a careful history and examination, are essential for the successful management of patients, as is maintaining an awareness of the possibility of the delayed presentation of traumatic diaphragmatic hernia and its complication. We present a 35-years-old male patient with delayed presenting, traumatic diaphragmatic hernia, and discuss a literature a review.
Adult*
;
Diagnosis
;
Hernia, Diaphragmatic
;
Hernia, Diaphragmatic, Traumatic*
;
Humans
;
Intestinal Obstruction
;
Male
;
Thorax
10.Sperm Motility in Chronic Nonbacterial Prostatitis: Related to Antisperm Antibody and Seminal Cytokine and Seminal Plasma Composition.
Moo Sang LEE ; Yun Seob SONG ; Sung Joon HONG ; Ih Rae CHO
Korean Journal of Urology 1996;37(4):433-440
Seminal inflammatory white blood cells in patients with chronic nonbacterial prostatitis may be related to the decrease of semen quality affecting fertility. So we evaluated the change of sperm motility, the levels of antisperm antibodies, the seminal levels of various cytokines and the change of seminal biochemical compositions that may affect sperm motility in the control group. We also examined chronic nonbacterial prostatitis with pyospermia to establish the role of seminal inflammatory white blood cells on alteration of sperm motility. The relation between various affecting factors and sperm motility were also evaluated. Titers of antisperm antibodies were low in patients with chronic nonbacterial prostatitis. Interleukin-1a and interleukin-8 of seminal inflammatory cytokines were present in increased quantities in patients with chronic nonbacterial prostatitis and interleukin-8 of these increases were correlated to sperm motility. Among the seminal composition, the level of zinc was decreased significantly which was not correlated to sperm motility. In conclusion, sperm motility was decreased and alterations in interleukin-8 of seminal cytokines were correlated with sperm motility in chronic nonbacterial prostatitis.
Antibodies
;
Cytokines
;
Fertility
;
Humans
;
Interleukin-8
;
Leukocytes
;
Prostatitis*
;
Semen Analysis
;
Semen*
;
Sperm Motility*
;
Spermatozoa*
;
Zinc