OBJECTIVES: This study aimed to investigate the effect of clinical clerkship-associated achievements, such as performance of procedures at the student clinic, observation, and attitude towards a clerkship, on the objective structured clinical examination (OSCE) scores of dental students graduating in restorative dentistry. MATERIALS AND METHODS: The OSCEs consisted of two stations designed to assess students' clinical skills regarding cavity preparation for a class II gold inlay and a class IV composite restoration. The clerkship achievements, consisting of the number of student clinical procedures performed, observation-related OSCE, and scores of their attitudes towards a conservative dentistry clerkship, were assessed. Correlation and multiple regression analyses were conducted. RESULTS: The correlation coefficient between the OSCE scores for cavity preparation for a class II gold restoration and clerkship attitude scores was 0.241 (p < 0.05). Regarding a class IV composite restoration, OSCE scores showed statistically significant correlations with the observation (r = 0.344, p < 0.01) and attitude (r = 0.303, p < 0.01) scores. In a multiple regression analysis, attitudes towards a clerkship (p = 0.033) was associated with the cavity preparation for a class II gold inlay OSCE scores, while the number of procedure observations (p = 0.002) was associated with the class IV composite restoration OSCE scores. CONCLUSIONS: The number of clinical procedures performed by students, which is an important requirement for graduation, showed no correlation with either of the OSCEs scores.
Achievement ; Clinical Clerkship ; Clinical Competence ; Dentistry ; Humans ; Inlays ; Students, Dental

This study investigated the effects of soyoligosaccharide consumption on feces bifidobacteria proliferation and feces lipid profiles in Korean young women. Eight healthy young women (25 - 34 years) were fed 15 g/day of soyoligosaccharide solution, containing 3 g of oligosaccharide as form of raffinose and starchyose, for 15 days with their habitual meals. Soyoligosaccharde intake increased the numbers of fecal total bacteria significantly until 10 days (p < 0.05) and the numbers of fecal bifidobactreia were significantly increased until 15 days (p < 0.05). The fecal pH was significantly decreased (p < 0.05) by soyligosaccharide intake. Fecal lipid concentration showed the trend to increse, especially fecal triglyceride level was significantly increased by soyoligosaccharide intake (p < 0.05). The water contents of feces, the amount of feces, evacuation frequency and taking time to evacuation were not affected by soyoligosaccharide intake. The color of feces changed to yellow-brown, and hardness of stool and effort to evacuation were reduced by soyoligosaccharide intake. These results suggest that soyoligosaccharide intake (3 g/day) in young women improved the gut microflora and fecal lipid profile. Therefore, soyoligosaccharide has a potential to be used as one of the promising prebiotics, and controlled trials with larger sample sizes and longer duration are need to be studied further.
Bacteria ; Feces ; Female ; Hardness ; Humans ; Hydrogen-Ion Concentration ; Meals ; Prebiotics ; Raffinose ; Sample Size ; Triglycerides ; Water

OBJECTIVE: Human embryonic stem (ES) cells have a great potential in regenerative medicine and tissue engineering. The human ES cells could be differentiated into specific cell types by treatments of growth factors and alterations of gene expressions. However, the efficacy of guided differentiation and isolation of specific cells are still low. In this study, we characterized isolated cells from differentiated human ES cells by magnetic activated cell sorting (MACS) system using specific antibodies to cell surface markers. METHODS: The undifferentiated hES cells (Miz-hESC4) were sub-cultured by mechanical isolation of colonies and embryoid bodies were spontaneously differentiated with DMEM containing 10% FBS for 2 weeks. The differentiated cells were isolated to positive and negative cells with MACS system using CD34, human epithelial antigen (HEA) and human fibroblast (HFB) antibodies, respectively. Observation of morphological changes and analysis of marker genes expression were performed during further culture of MACS isolated cells for 4 weeks. RESULTS: Morphology of the CD34 positive cells was firstly round, and then it was changed to small polygonal shape after further culture. The HEA positive cells showed large polygonal, and the HFB positive spindle shape. In RT-PCR analysis of marker genes, the CD34 and HFB positive cells expressed endodermal and mesodermal genes, and HEA positive cells expressed ectodermal genes such as NESTIN and NF68KD. The marker genes expression pattern of CD34 positive cells changed during the extension of culture time. CONCLUSION: Our results showed the possibility of successful isolation of specific cells by MACS system from undirected differentiated human ES cells. Thus, MACS system and marker antibodies for specific cell types might be useful for guided differentiation and isolation of specific cells from human ES cells.
Antibodies ; Ectoderm ; Embryoid Bodies ; Endoderm ; Fibroblasts ; Gene Expression ; Humans* ; Intercellular Signaling Peptides and Proteins ; Mesoderm ; Nestin ; Regenerative Medicine ; Tissue Engineering

Although congenital syphilis can be prevented with prenatal screening, the disease remains problematic. Currently, there are no cases that describe hematuria and pneumonia related to congenital syphilis. We report a case of congenital syphilis that involved nephrotic syndrome and pneumonia alba in a 22-day-old male infant whose mother did not receive adequate prenatal care. The congenital syphilis diagnosis was confirmed with a serologic test and the patient recovered with penicillin treatment. Clinical findings may be subtle in neonates and delayed recognition occurs frequently, thus complete prenatal screening is critical for congenital syphilis prevention. Immediate serologic testing should be performed to obtain a differential diagnosis if an infant is delivered by a mother that has not received appropriate prenatal examinations.
Diagnosis ; Diagnosis, Differential ; Exanthema* ; Hematuria* ; Humans ; Infant ; Infant, Newborn ; Male ; Mothers ; Nephrotic Syndrome ; Penicillins ; Pneumonia* ; Prenatal Care ; Prenatal Diagnosis ; Serologic Tests ; Syphilis, Congenital*

This study investigated the effects of high amylose starch (HAS) consumption on gut functions in male Sprague-Dawley rats. Experimental animals were fed an diet containing HAS for 4 weeks (0, 125, 250, 500 g/kg diet). Stool weights, transit time, the pH of cecum, Bifidobacterium growth, short chain fatty acid production, and prostaglandin E2 production in colon mucus were measured. HAS intake did not affect body weight gain or food efficiency ratio during experimental period. There were no significant differences in kidney weight, epididymal fat pad weights or spleen weights, but the weights of the liver and thymus were significantly lower in the HAS100 group. The length of the large intestine, the weights of the cecum wall and cecum contents, and stool weights significantly increased through HAS intake. But transit time was not affected by the experimental diet. Although Bifidobacterium growth in the cecum increased through the HAS intake dose dependently, there were significant differences in the HAS50 and HAS100 groups. HAS intake increased the production of short chain fatty acid in the cecum contents. In particular, acetate and butyrate concentrations grew significantly. And the production of prostaglandin E2 in the colon mucus significantly decreased through HAS intake. These results demonstrate that high amylose starch intake significantly improves gut function.
Adipose Tissue ; Amylose* ; Animals ; Bifidobacterium ; Body Weight ; Butyrates ; Cecum ; Colon ; Diet ; Dinoprostone ; Humans ; Hydrogen-Ion Concentration ; Intestine, Large ; Kidney ; Liver ; Male ; Mucus ; Rats* ; Rats, Sprague-Dawley ; Spleen ; Starch* ; Thymus Gland ; Weights and Measures

Curcumin has been known for its anti-proliferative and apoptotic effects on several cancer cells. We examined the inhibitory effects of curcumin on cancer cell adhesion, motility, invasion and matrix metalloproteinase-9 (MMP-9) activity in MDA-MB-231 human breast cancer cells. MDA-MB-231 cells were cultured with 0, 5, 10 or 20 micrometer of curcumin. Curcumin significantly inhibited the adhesion of cancer cells to the fibronectin at 20 micrometer and suppressed the motility and invasion of cancer cells at all concentrations. Also, the MMP-9 activity was inhibited by curcumin, but MMP-9 protein amounts were not affected. Our data indicate that curcumin inhibits motility, invasion and MMP-9 activity of MDA-MB- 231 cells. Therefore, curcumin may contribute to the potential beneficial food component to prevent the cancer metastasis in human breast cancer.
Breast Neoplasms* ; Breast* ; Cell Adhesion ; Curcumin* ; Fibronectins ; Humans* ; Matrix Metalloproteinase 9* ; Neoplasm Metastasis

Tumor invasion is composed of four steps: cell adhesion to the extracellular matrix, degradation of the extracellular matrix components, tumor cell motility followed by cell detachment. Matrix metalloproteinases (MMPs) are important proteinases that associated with degradation of matrix component. Epigallocatechin gallate (EGCG) is a major polyphenolic constituent of green tea. In the study, we examined the anti-invasive and MMP activity suppression effects of EGCG in MDA-MB-231 human breast cancer cells. MDA-MB-231 human breast cancer cells were cultured with various concentrations 0 - 100 micrometer of EGCG. EGCG significantly inhibited the cell adhesion to the fibronectin. Cell motility through gelatin filter and invasion to Matrigel were inhibited dose-dependently by EGCG treatment. EGCG also inhibited the activities of MMP-2, -9 and the amount of MMP-9 (alpha = 0.05). Therefore, EGCG may contribute to the potential beneficial food component to prevent the invasion and metastasis in breast cancer.
Breast Neoplasms* ; Breast* ; Cell Adhesion ; Cell Movement ; Extracellular Matrix ; Fibronectins ; Gelatin ; Humans* ; Matrix Metalloproteinases ; Neoplasm Metastasis ; Peptide Hydrolases ; Tea

This study investigated the effects of soyoligosaccharide consumption on lipid profile of plasma, liver and feces and immune responses in Sprague-Dawley male rats. Sixty male Sprague-Dawley rats 4-wk-old were provided the soyoligosaccharide containing diets for 4 weeks (0, 100 g/kg diet); each of these diets was supplemented with either 70 or 200 g fat/kg diet, giving a total of 4 experimental groups. The effect of weight reduction was most significantly observed in the group fed low fat and soyoligosacchairde diet. The plasma total lipid and cholesterol contents were not changed by either fat proportion or soyoligosaccharide supplementation in the diets. Also the plasma triglyceride lowering effect by soyoligosaccharide was not observed in rats fed either low fat or high fat diet. However, the significant decrease in TG contents was found with rats fed high fat diets compared to the control/no soyoligosaccharide diet. Elevation of plasma LDL-cholesterol and reduction of HDL-cholesterol by feeding high fat diet was not altered by supplementing soyoligosaccharide. This was also applied to the liver lipid profiles. The significant increases in liver total lipid, triglycerides and cholesterol by high fat diet was not abolished by feeding soyoligosaccharide. However, the desirable effects of feeding soyoligosaccharide were found with total lipid and cholesterol excretion through feces in rats fed high fat diets. Immune organ weights and spleen cell proliferations did not affected by experimental diets. These results demonstrated that soyoligosaccharide intakes increased the lipid output via feces, especially in rats fed the high fat diet, but more researches are needed on immune responses.
Animals ; Cholesterol ; Diet* ; Diet, High-Fat ; Feces ; Humans ; Lipid Metabolism* ; Liver ; Male ; Organ Size ; Plasma ; Rats* ; Rats, Sprague-Dawley ; Spleen ; Triglycerides ; Weight Loss

PURPOSE: User-created content (UCC) has provided a considerable amount of medical information and become an important source. We aimed to evaluate the quality and scientific accuracy of precocious puberty-related UCC on YouTube. METHODS: The keywords "precocious puberty", "early puberty", "sexual precocity", and "precocity" were searched for on YouTube during June and July 2014. More than 1,500 UCC matched the keywords. According to the information provider, UCC was classified as medical, oriental, or commercial & others. We evaluated the quality and scientific accuracy of the information provided in UCC using the DISCERN instrument and information scores, respectively. RESULTS: We selected 51 UCC, which were categorized into three types: medical (n=17), oriental (n=17), or commercial & others (n=17). The overall quality score for medical UCC (3.4) was significantly higher relative to those of oriental and commercial & others UCC (2.8 and 2.3, respectively) (P<0.001). In the assessment of scientific accuracy, the mean information score for medical UCC (30.7) was significantly higher than those of oriental and commercial & others UCC (15.9 and 5.1, respectively) (P<0.001). The mean duration of oriental UCC was the longest (P<0.001), however, it was viewed less frequently among them (P=0.086). CONCLUSION: The quality and accuracy of precocious puberty-related health information in UCC were variable and often unreliable. The overall quality of UCC regarding precocious puberty was moderate. Only medical UCC provided scientifically accurate information. As UCC becomes a popular source of health information, it is important to provide reliable, scientifically accurate information.
Puberty, Precocious

BACKGROUND: Postoperative nausea and vomiting (PONV) are common problems in patients undergoing outpatient laparoscopy and hysteroscopy. Associated complications range in severity from mild discomfort to hospital admission for dehydration or pulmonary aspiration. This study was designed to assess the efficacy of 2 antiemetics (metoclopramide and ondansetron) with propofol as the induction agent for prophylaxis of postoperative emesis in women undergoing general anesthesia for gynecologic endoscopic surgery. METHODS: One hundred and twenty six healthy women undergoing laparoscopic and hysteroscopic surgery with general anesthesia were randomized to receive intravenous bolus of saline 2 ml, metoclopramide 10 mg, ondansetron 4 mg prior to induction of anesthesia. Anesthesia was induced with propofol 2~2.5 mg/kg, vecuronium 0.1 mg/kg and maintained with O2, N2O, enflurane, fentanyl 1~2 microgram/kg. The incidence of nausea and vomiting was assessed at recovery room and all patients were contacted 24 hours after discharge. RESULTS: The incidence of PONV showed 11.9% in control group, 11.9% in metoclopramide group and 9.5% in ondansetron group in recovery room. The incidence of PONV showed 14.3% in control group, 14.3% in metoclopramide group and 7.1% in ondansetron group in 24 hours postoperatively. There were no significant differences among the groups. CONCLUSIONS: When propofol was administered by intravenous induction agent, no antiemetic in this study was more efficacious than propofol alone in reducing PONV for women undergoing outpatient laparoscopic and hysteroscopic surgery.
Anesthesia ; Anesthesia, General ; Antiemetics ; Dehydration ; Enflurane ; Female ; Fentanyl ; Humans ; Hysteroscopy ; Incidence ; Laparoscopy* ; Metoclopramide* ; Nausea ; Ondansetron* ; Outpatients ; Postoperative Nausea and Vomiting* ; Propofol* ; Recovery Room ; Vecuronium Bromide ; Vomiting