OBJECTIVES: It is widely accepted that estrogen has favorable effects on cardiovascular diseases, especially in the postmenopausal women. Endothelin-1(ET-I), released from the vascular endothelium, is a 21-amino acid peptide with strong vasoconstrictor activity. However, the effect of estrogen on the vasoconstriction to ET-1 has not been extensively studied. METHODS: To investigate the effect of estrogen (175beta-estradiol) on the vascular contraction to ET-1, porcine coronary artery(PCA) rings were suspended in organ chambers(37 degrees C, 95% O2/5% CO2) for measurement of isometric tension change. Endothelium was removed mechanically if necessary. In acute experiments, vascular rings were preincubated for 15minutes with 3different concentrations of 170beta-estradiol(10(-6), 10(-5), 10(-4)M) and concentration-contraction curves to cumulative doses of ET-1 were constructed. In the experiments after a longer exposure to 17beta-estradiol, the vessels with endothelium were exposed in the 5% CO2 incubator to 3different concentrations of 17beta-estradiol(10(-9), 10(-8), 10(-7)M) for 44-50 hours, and then concentrationcontraction curves to ET-1 were obtained. RESULTS: Incubation for 15minutes with 170beta-estradiol(10(-4)M) inhibited ET-1-induced contraction in the vessels with endothelium(area under the curve and maximal contraction, p<0.05 compared with control). This effect persisted regardless of the sex and the presence or absence of the endotheliurn. Incubation of the vessels far a longer time with 170beta-estradiol(44-50 hours) resulted in the inhibition of maximal contraction to ET-1(p<0.05) by a lower concentration of 175beta-estradiol(10(-7)M) than in acute experiments in male PCA rings, but an enhanced contraction to ET-1(area under the curve; p<0.05) by 10M of 175beta-estradiol was observed in female PCA rings. CONCLUSION: Short-time incubation with 17Pbeta-estradiol has an inhibitory effect on the contraction to ET-1 in PCA rings. This effect is independent of the presence of the endothelium and the sex of the pigs. A longer incubation with 17beta-estradiol results in a similar inhibitory effect on male(but not female) PCA rings, suggesting that a sex-related difference may exist concerning the effect of 17beta-estradiol on ET-1-induced contraction.
Cardiovascular Diseases ; Coronary Vessels* ; Endothelin-1* ; Endothelins ; Endothelium ; Endothelium, Vascular ; Estrogens ; Female ; Humans ; Incubators ; Male ; Passive Cutaneous Anaphylaxis ; Swine ; Vasoconstriction

OBJECTIVE: To report three cases of monozygotic twinning after IVF-ET transfer. METHODS: Private practice in two different assisted reproductive technology clinics. RESULTS: Three intrauterine monozygotic twin pregnancies occurred after IVF-ET. One of them was complicated by cord entanglement, another is progressing normal pregnancy without complication and the other was had a normal pregnancy without complication and delivered twin by cesarean section. CONCLUSION: The reported prevalence of multiple gestations in IVF-ET is a approximately 30%, and it is only 2.7% to be monozygotic twinning in IVF-ET. We report three cases of monozygotic twining after IVF-ET.
Cesarean Section ; Female ; Humans ; Pregnancy* ; Prevalence ; Private Practice ; Reproductive Techniques, Assisted ; Twinning, Monozygotic ; Twins, Monozygotic*

We have performed 190 renal transplantations from August 1990 to June 1996. No cadaveric donor was used and all except one were first grafts. We conducted a clinical analysis, especially concerning the factors affecting acute rejection and graft function at 1 year. The results were as follows : 1) The mean ages of donor and recipient were 35.3 years and 37.4 years respectively. The ratio of male to female was 1.4 : 1 and 1.5 : 1, respectively. 2) One hundred and six cases(55.8%) were living unrelated donors and eighty four cases(44.2%) were living related donors. 3) One hundred and sixty six potential recipients were given 3 donor specific transfusions(DST), started about 5 weeks prior to transplantation with cyclosporin coverage. Six of these patients(3.6%) developed sensitization by DST that precluded the subsequent transplantation and the remaining 160 patients received the kidney from the blood donors. Another 28 recipients were given DST 24 hours prior to operation. 4) Most of initial acute rejection episodes(71 episodes, 95%) appeared within the first month of post-transplantation. 5) We analyzed the possible factors affecting the incidence of acute rejection. Donor age and HLA incompatibility were significant statistically(p<0.05). 6) Multiple regression analysis showed that a number of acute rejection episodes(p<0.001) was the only independent risk factor for the graft function at 1 year. 7) Overall graft and patient survival rate were 97.2% and 98.6% at 1 year, 94.1% and 95.5% at 3 years.
Blood Donors ; Cadaver ; Cyclosporine ; Female ; Humans ; Incidence ; Kidney ; Kidney Transplantation* ; Male ; Risk Factors ; Survival Rate ; Tissue Donors ; Transplants ; Unrelated Donors

OBJETIVE: To assess the effects of progesterone and acetyl-L-carnitine used after treated with IsolateR gradient before semen cryopreservation-thawing on sperm parameters and membrane integrity. MATERIALS AND METHODS: From April 2001 to July 2001, ten normal male partner of couples who were visited in vitro fertilization (IVF) clinics. the semens were treated with IsolateR gradient before cryopreservation, spermatozoa was incubated with progesterone (1, 5 and 10 micrometer), acetyl-L-carnitine (2.5, 5 and 10 micrometer), or both (progesterone, 1 micrometer; and acetyl-L-carnitine, 5 micrometer) for 30 min. RESULTS: There were no differences in sperm parameters and vital stain among isolate only treated group, progesterone (1, 5 and 10 micrometer), acetyl-L-carnitine (2.5, 5 and 10 micrometer) and both (progesterone, 1 micrometer; and acetyl-L-carnitine, 5 micrometer). But, in high concentration of acetyl-L-carnitine (10 micrometer) treated group, sperm parameters and vital stain were decreased. The statistical method was used ANOVA (Kruskal-Wallis test) and p value was <0.01. CONCLUSIONS: Neither progesterone nor acetyl-L-carnitine show to be protective effect on the cryodamage assessed by sperm parameters and vital stain (eosin-Y stain) in normal sperm. High concentration of acetyl-L-carnitine (10 micrometer), however, was harmful effect on cryoprevention.
Acetylcarnitine* ; Cryopreservation ; Family Characteristics ; Fertilization in Vitro ; Humans ; Male ; Membranes* ; Progesterone ; Semen ; Spermatozoa*

BACKGROUND: More than 90% of acute stroke patients have measurable cardiovascular sequelae, but we have been often overlooked in formal discussions of treatment. If we estimate the incidence of myocardial injury in patient with spontaneous SAH, we may figure the possibility of cardiac dysfunction in such patients. This study was designed to investigate the incidence of myocardial injury in patients with spontaneous SAH using cardiac troponin I(cTnI). METHODS: A prospective single emergency center study was performed to determined preoperative incidence of unrecognized cardiac injury in patients suffering spontaneous SAH. We include the spontaneous SAH patients who underwent serum measurements of the cardic troponin I immediately upon admission last six month period. ECG, CK, CK-MB and myoglobin were also performed at admission. We excluded the spontaneous SAH patients who had past history of myocardial ischemia and ECG abnormality. RESULTS: Fifty-two patients(34 females, 18 males) with spontaneous SAH were studied prospectively. 18 patients(34.6% of the total study population) had cTnI level above 0.5ng/ml. ECG was performed in 52 patients and was abnormal in 15 of the 52 patients(28.8%). CONCLUSION: The measurement of cTnI has provided physicians with a myocardial marker that has a cardiac sensitivity for cardiac injury equal to that of CK-MB yet with greater specificity. So, cardiac troponin I is useful to estimate the incidence of myocardial injury in patients with spontaneous SAH. And we may estimate the possibility of cardiac dysfunction in such patients. This knowledge will hopefully aid in the care and improve the outcome.
Electrocardiography ; Emergencies ; Female ; Humans ; Incidence* ; Myocardial Ischemia ; Myoglobin ; Prospective Studies ; Sensitivity and Specificity ; Stroke ; Troponin I* ; Troponin*

Background: Risankizumab is a humanized immunoglobulin G1 monoclonal antibody that selectively binds to the p19 subunit of interleukin-23. Risankizumab has demonstrated rapid and excellent therapeutic effects in several clinical trials. Although a growing number of studies have reported data on the real-world efficacy and safety of risankizumab for the treatment of psoriasis, no such study has been conducted in Korea. Objective: We evaluated the real-world efficacy and safety of risankizumab for the treatment of moderate-to-severe plaque psoriasis in Korean patients. Methods: This was a retrospective single-center study. A total of 33 patients treated with risankizumab, for at least 16 weeks, were enrolled. Based on electronic medical records, the clinical characteristics, psoriasis area and severity index (PASI) score, body surface area, and adverse events were investigated. Results: The mean PASI score was significantly reduced at 4 weeks of risankizumab treatment (3.27±2.15) and gradually reduced at week 16 (1.06±0.97) and week 52 (0.24±0.63) (p＜0.05). At week 16, all patients achieved a PASI 75 response, and 66.7% and 27.3% of patients achieved PASI 90 and PASI 100 responses, respectively. Obese patients (body mass index, BMI≥25 kg/m2 ) showed a lower PASI 90 response than non-obese patients (BMI＜25 kg/m2 ) at week 16. Older patients (age≥65 years) showed significantly higher PASI scores than younger patients (age＜65 years) at week 16. Mild to moderate adverse events were reported in four patients; however, no patient discontinued treatment. Conclusion Risankizumab was very effective in a real-world clinical practice with a favorable safety profile in Korean patients with moderate-to-severe psoriasis.

A calcified structure blocking the flow of saliva into the mouth is a major cause of salivary dysfunction. If a stone is detected, the goal of treatment would be to remove it. Furthermore, the fundamental treatment for preventing recurrence, although depending on the location and size of the stone, is salivary gland resection. The submandibular gland duct and hilum stone is usually removed by transoral approach. If there are multiple stones in the submandibular gland and the duct, it would be necessary to carry out resection of submandibular gland, using the intra-oral approach. We recently experienced a case of multiple stone in the submandibular gland and the duct in a 73-year-old man, who presented with the right submandibular area swelling after meals. We removed the submandibular gland and duct stone without intra-oral approach and present this case with a review of the literature.

BACKGROUND: An epidural steroid injection (ESI) is a commonly administered procedure in pain clinics. An unintentional lumbar facet joint injection during interlaminar ESI was reported in a previous study, but there has not been much research on the characteristics of an unintentional lumbar facet joint injection. This study illustrated the imaging features of an unintentional lumbar facet joint injection during an interlaminar ESI and analyzed characteristics of patients who underwent this injection. METHODS: From December 2015 to May 2017, we performed 662 lumbar ESIs and we identified 24 cases (21 patients) that underwent a lumbar facet joint injection. We gathered data contrast pattern, needle approach levels and directions, injected facet joint levels and directions, presence of lumbar spine disease as seen on magnetic resonance images (MRI), and histories of lumbar spine surgeries. RESULTS: The contrast pattern in the facet joint has a sigmoid or ovoid contrast pattern confined to the vicinity of the facet joint. The incidence of unintentional lumbar facet joint injection was 3.6%. The mean age was 68.47 years. Among these 21 patients, 14 (66.7%) were injected in the facet joint ipsilaterally to the needle approach. Among the 20 patients who received MRI, all (100%) had central stenosis and 15 patients (75%) had severe stenosis. CONCLUSIONS: When the operator performs an interlaminar ESI on patients with central spinal stenosis, the contrast pattern on the fluoroscopy during interlaminar ESI should be carefully examined to distinguish between the epidural space and facet joint.
Colon, Sigmoid ; Constriction, Pathologic ; Epidural Space ; Fluoroscopy ; Humans ; Incidence ; Magnetic Resonance Imaging ; Needles ; Pain Clinics ; Retrospective Studies ; Spinal Stenosis ; Spine ; Zygapophyseal Joint

Ameloblastoma ; Ameloblasts ; Diagnosis ; Mandible ; Odontogenic Cysts ; Radicular Cyst

Treatments for restoring the function and esthetics of missing teeth include fixed bridge, partial denture, orthodontic movement, implantation and autotransplantation. However, there is no absolute indications for each techniques. Due to undevelopment of root and root resorption after autotransplantation, the success rate of autotrans-plantation over the past decades have been low. Recently. with the study on biological principles of the healing of periodontal ligament, the success rate of autotransplantation began to improve. We report the cases of successful autotransplantation which resulted in ideal healing of periodontal ligament, gingiva and alveolar bone.
Autografts* ; Denture, Partial ; Denture, Partial, Fixed ; Esthetics ; Gingiva ; Periodontal Ligament ; Root Resorption ; Tooth*