Transcriptome analysis of iBET-151, a BET inhibitor alone and in combination with paclitaxel in gastric cancer cells

BET inhibitor, as an epigenetic regulator inhibitor, reduces the expression of oncogenes such as Myc and Bcl-2, which affects cancer growth and development. However, it has modest activity because of the narrow therapeutic index. Therefore, combination therapy is necessary to increase the anti-tumor effect. Paclitaxel, an anti-mitotic inhibitor, is used as second-line therapy for gastric cancer (GC) as a monotherapy or combination. In this study, we performed RNA sequencing of GC cells treated with iBET-151 and/or paclitaxel to identify the differentially expressed genes associated with possible mechanisms of synergistic effect. We also performed Gene Ontology enrichment and Kyoto Encyclopedia of Genes and Genomes pathway analyses to determine the most enriched terms and pathways of upregulated and downregulated genes. We found 460 genes in which iBET-151 and paclitaxel combination treatment changed more than single-treatment or no-treatment. Thus, additional functional studies are needed, but our results provide the first evidence of the synergistic effect between iBET-151 and paclitaxel in regulating the transcriptome of GC cells.

Transcriptome analysis of iBET-151, a BET inhibitor alone and in combination with paclitaxel in gastric cancer cells

BET inhibitor, as an epigenetic regulator inhibitor, reduces the expression of oncogenes such as Myc and Bcl-2, which affects cancer growth and development. However, it has modest activity because of the narrow therapeutic index. Therefore, combination therapy is necessary to increase the anti-tumor effect. Paclitaxel, an anti-mitotic inhibitor, is used as second-line therapy for gastric cancer (GC) as a monotherapy or combination. In this study, we performed RNA sequencing of GC cells treated with iBET-151 and/or paclitaxel to identify the differentially expressed genes associated with possible mechanisms of synergistic effect. We also performed Gene Ontology enrichment and Kyoto Encyclopedia of Genes and Genomes pathway analyses to determine the most enriched terms and pathways of upregulated and downregulated genes. We found 460 genes in which iBET-151 and paclitaxel combination treatment changed more than single-treatment or no-treatment. Thus, additional functional studies are needed, but our results provide the first evidence of the synergistic effect between iBET-151 and paclitaxel in regulating the transcriptome of GC cells.

Management of Split Thickness Skin Graft Donor Sites: Comparison of Four Different Dressing Materials

PURPOSE: Split thickness skin graft is a frequently used reconstructive technique in burn wound, but the ideal dressing material of the donor site is yet to be developed. The donor sites have been managed with various dressing materials. The aim of this study is to compare four different dressing materials for management of the donor site in a prospective trial. METHODS: This study is based on 85 patients who had undergone split thickness skin graft from September 2011 to February 2012. The grafts harvested with a same manner and the donor sites were managed with one of the four dressing materials: Aquacel Ag(R), Mepitel(R), Bactigra(R), Op-Site(R). We compared post-operative pain scale, the time required epithelialization, ease of application, post-operative infection and number of dressings. RESULTS: Aquacel Ag(R) was the more painless dressing materials in post-operative day 1, 4, 7, 10 than Mepitel(R), Bactigra(R), Op-Site(R). Number of dressings was more lower for Aquacel Ag(R) with Mepitel(R). Ease of application was more higher for Aquacel Ag(R) with Mepitel(R). But Aquacel Ag(R) was not earliest epithelialization. The incidence of infection was not low in Aquacel Ag(R). CONCLUSION: Aquacel Ag(R) dressing is better than other dressing materials for split thickness skin graft donor site in the number of dressings, ease of application, post-operative pain.

Vardenafil Increases Cell Proliferation in the Dentate Gyrus through Enhancement of Serotonin Expression in the Rat Dorsal Raphe

This study was conducted to evaluate the effects of vardenafil (Levitra), a phosphodiesterase-5 (PDE-5) inhibitor, on cell proliferation in the hippocampal dentate gyrus and on 5-hyroxytryptamine (5-HT, serotonin) synthesis and tryptophan hydroxylase (TPH) expression in the rat dorsal raphe nucleus. Male Sprague-Dawley rats were divided into 6 groups (n=5 in each group): a control group, a 0.5 mg/kg-1 day vardenafil-treated group, a 1 mg/kg-1 day vardenafil-treated group, a 2 mg/kg-1 day vardenafil-treated group, a 1 mg/kg-3 day vardenafil-treated group, and a 1 mg/kg-7 day vardenafil-treated group. 5-bromo-2'-deoxyuridine (BrdU) immunohistochemistry was then performed to evaluate cell proliferation in the dentate gyrus. In addition, 5-HT and TPH immunohistochemistry was conducted to evaluate serotonin expression in the dorsal raphe. The results revealed that treatment with vardenafil increased cell proliferation in the dentate gyrus and enhanced 5-HT synthesis and TPH expression in the dorsal raphe in a dose- and duration-dependent manner. The findings demonstrate that the increasing effect of vardenafil on cell proliferation is closely associated with the enhancing effect of vardenafil on serotonin expression under normal conditions.

Postoperative Results of Ossiculoplasty over Stapes Head / 대한이비인후과학회지

BACKGROUD AND OBJECTIVES: Incus erosion with intact stapes head was most common ossicular impairment in chronic otitis media. Here, we aimed to investigate hearing and clinical results of the ossiculoplasties when the stapes head was intact. SUBJECTS AND METHOD: We analyzed 281 patients of ossiculoplasties over stapes head performed from 1990 to 2005. Patients were divided into 3 groups: Si group (n=121) included patients with interposition of prosthesis between malleus and stapes; Sc-PORP group (n=99) included patients with columellarization between tympanic membrane and stapes head with PORP; Sc-SC group (n=61) included patients with columellarization with the autologous materials between tympanic membrane and stapes head. Hearing improvement and extrusion rates of three groups were analyzed. RESULTS: At 6 months after the surgery, the postoperative air-bone gap (ABG) level within 20 dB was 45%, 44%, 25% in Si, Sc-PORP, Sc-Sc, respectively. The closure of ABG was statistically better in Si and Sc-PORP compared with Sc-SC. In canal wall-up mastoidectomy, Sc-PORP showed better hearing results than Si, while Si was better than Sc-PORP in canal wall-down mastoidectomy. At 36 months after the surgery, extrusion-free survival according to the type of ossiculoplasty were 100%, 89.6%, 100% in Si, Sc-PORP, Sc-SC, respectively. CONCLUSION: Si and Sc-PORP provide good hearing results. However, Si has lower extrusion rates than Sc-PORP and remains stable over time.

Significant Gene Selection Using Integrated Microarray Data Set with Batch Effect

In microarray technology, many diverse experimental features can cause biases including RNA sources, microarray production or different platforms, diverse sample processing and various experiment protocols. These systematic effects cause a substantial obstacle in the analysis of microarray data. When such data sets derived from different experimental processes were used, the analysis result was almost inconsistent and it is not reliable. Therefore, one of the most pressing challenges in the microarray field is how to combine data that comes from two different groups. As the novel trial to integrate two data sets with batch effect, we simply applied standardization to microarray data before the significant gene selection. In the gene selection step, we used new defined measure that considers the distance between a gene and an ideal gene as well as the between-slide and within-slide variations. Also we discussed the association of biological functions and different expression patterns in selected discriminative gene set. As a result, we could confirm that batch effect was minimized by standardization and the selected genes from the standardized data included various expression pattems and the significant biological functions.

Follow up Study about Health-Related Quality of Life in Injury Patients

PURPOSE: The purpose of this study is to assess healthrelated quality of life (HRQOL), to compare HRQOL of 3 months after injury with 10 days after injury, and to offer the result of this study to basic data of HRQOL in Korean patients with injury. METHODS: Between November 1, 2003, and March 2, 2004, 100 eligible injury patients who had visited emergency center were enrolled in the study. HRQOL was measured by Korean EuroQol 5 dimensions (KEQ-5D), and assessed in 10 days and 3 months after injury. The severity of injury was measured by Injury Severity Score (ISS). RESULTS: Of the 100 subjects, 54 (54%) were men and 46 (46%) were women, with mean (+/-SD) age of 43.7 (+/-15.2) and mean ISS (+/-SD) of 4.45 (+/-4.38). The KEQ-5D utility index and 5 subdimensional scores of 3 months after injury were significantly higher than those of 10 days after injury. The KEQ-5D utility indexes of 3 months after injury of each group by the ISS, age, sex, educational status and marrital status had significant higher than those of 10 days after injury. CONCLUSION: In this study, we observed that HRLOQ in patients with 3 months after injury was higher than those with 10 days after injury. However, to define the more definite feature of HRLOQ in patients with injury, the study with more and large epidemiologic controlled injury group and detailed variable adjustment should be done.

Loperamide or Diazepam Improves Long-lasting Fecal Incontinence after Low Anterior Resection of the Rectum

PURPOSE: Some patients who underwent low anterior resection of the rectum do not show satisfying improvement in their anorectal function despite of long-term conservative management. The aim of this prospective study was to evaluate whether loperamide or diazepam could improve anorectal symptoms. METHODS: Fifty-two patients who continued to complain of problems with their anorectal function at least 6 months (mean: 1 year and 2 months) after the operation were recruited. The patients were randomly divided into two groups, and 2 mg of loperamide (loperamide-group, n=24) or diazepam (diazepam-group, n=28) was given orally three times a day for 4 weeks. Standardized interviews concerning anorectal function and anorectal physiologic studies were performed before medication, at the fourth week of medication, and 4 weeks after withdrawal from the medication. RESULTS: In both groups during the medication, daily stool frequency, the number of patients with urgency to defecate, and incontinence score significantly decreased, and maximal resting pressure and urge sensation volume significantly increased. In the diazepam-group, the decrease in daily stool frequency, the number of patients with urgency to defecate, and the increase in urge sensation volume continued after withdrawal from the medication. CONCLUSION: Loperamide or diazepam could improve the long-lasting fecal incontinence symptoms after low anterior resection in patients with rectal cancer. In the process, the increase in maximal resting pressure and urge sensation volume seemed to contribute to a significant degree.

Correlation between Health-related Quality of Life Score and Injury Severity Score in Patients with Injury in Emergency Department

PURPOSE: The purpose of this study is to show the correlation between Health-related quality of life (HRQOL) score and injury severity score (ISS) in patients with injury in emergency department. METHODS: Between November 1, 2003, and March 2, 2004, 234 eligible injury patients who had visited our emergency center were enrolled in the study. HRQOL was assessed in 10 days after injury by Korean Short Form Health Survey- 36(KSF-36), Korean EuroQol 5 dimensions (KEQ-5D), and Korean Human Utility Index-3(KHUI-3). The severity of injury was measured by using the ISS. RESULTS: Of the 234 subjects, 149(63.7%) were men and 85(36.3%) were women, with mean(+/-SD) age of 46.1(+/-15.3) and mean ISS(+/-SD) of 4.54(+/-3.98). The KEQ-5D and KHUI-3 scores adjusted by ISS in patients with medical operation or hospitalization were significantly lower than those in patients without medical operation or hospitalization. All HRQOL scores except KSF-36 physical component summary (PCS) and general health (GH) score were significantly lower in patients group with high ISS than in patients group with low ISS. KEQ-5D and KHUI-3 had significant negative correlation with ISS (r=-0.58,-0.52). But there were no significant correlation between KSF-36 score and ISS. CONCLUSION: In this study, we observed that KEQ-5D and KHUI-3 scores in patients with injury were significantly correlated with ISS. However, to define the more definite feature of HRQOL in patients with injury, the study with more and large epidemiologic controlled injury group and detailed variable adjustment should be done.

Health-related Quality of Life in Patients with Injury in the Emergency Department

PURPOSE: The purpose of this study is to assess healthrelated quality of life (HRQOL) in patients with injury in the Emergency department, to compare that HRQOLs with normal control group, and to offer the results of this study as basic data on the HRQOL in Korean patients with injury, in the Emergency department. METHODS: Between November 1, 2003, and March 2, 2004, 266 eligible injury patients who had visited our emergency center were enrolled in the study. The HRQOL was measured by using the Korean Short Form Health Survey-36 (KSF-36)and the Korean EuroQol 5 dimensions (KEQ-5D). The HRQOL was assessed at 10 days after injury. The severity of injury was measured by using the Injury Severity Score (ISS). RESULTS: Of the 266 subjects, 164 (61.7%) were men and 102 (38.3%) were women, with a mean (+/-SD) age of 42.8 (+/-15.2) and mean ISS (+/-SD) of 4.54 (+/-3.98). The KSF- 36 and KEQ-5D scores in patients with injury were significantly lower than those in the normal control group. The HRQOL scores of each group by cause of injury had significant differences in the KSF-36 MCS and the KEQ-5D utility index, but they had no significant differences in the KSF-36 PCS. Women were more likely to have poor HRQOLs than men, but no statistical significance was found. Patients with non-intentional injury and hospitalized were more likely to have poor HRQOLs than patients with intentional injury and discharged, but the statistical significance varied with the measurement tool. CONCLUSION: In this study, we observed that the HRLOQs in patients with injury were lower than those in healthy subjects. However, if more definite feature of HRLOQ in patients with injury are to be defined, a study with a large epidemiologic controlled injury group and with detailed adjustments of the variable is needed.

An electromyographic study of the muscle activity in Angle's Class II div. 1 malocclusion and normal occlusion / 대한치과교정학회지

This study was performed to investigate the relationships between the EMG activity of the masticatory muscles in Angle's Class II div. 1 malocclusion and normal occlusion. This study was ranged from age 12 to 14 year-old for 30 male subjects: 15 subjects were Angle's Class II div. 1 malocclusion, and 15 subjects were normal occlusion with acceptable profile. Their cephalometric measurement were analyzed, and the EMG recordings from the anterior temporal, posterior temporal, masseter, and orbicularis oris muscles were analyzed during rest position, mastication of peanuts, and swallowing. All data was recorded and statistically processed with the VAX-11/780 computer system. The results were as follows: 1. The activity of muscles at rest was highest in the posterior temporal muscle with normal occlusion, as well as in those with Class II div. I malocclusion, and the posterior temporal muscle activity of Class II div. I malocclusion was higher than that of normal occlusion. 2. During mastication, all muscle activities of Class II div. 1 malocclusion were recorded lower than those of normal occlusion, and the activity of the anterior temporal muscle was higher than that of the posterior temporal muscle in both types of occlusion. 3. As for the activity in orbicularis oris muscle, it was greater in opening phase than in closing phase during chewing cycle with both types of occlusion. 4. During swallowing, the activities of the anterior temporal, masseter, and orbicularis oris muscles of Class II div. 1 malocclusion were recorded lower than those of normal occlusion.

The life of Dr. John William Heron, the second superintendent of Chejungwon / 의사학

The purpose of this paper is to overview the life of John W. Heron, M. D. who was the first appointed medical missionary to Korea by the Presbyterian Church USA. Although he was a competent doctor as well as a devoted missionary, he is not well-known yet, because he died early after 5 years' service in Korea. Dr. Heron was born in Derbyshire, England on June 15, 1856. His father, Rev. E. S. Heron, was a Scotch Minister of Congregational Church. His family emigrated to America in 1870 when he was fourteen years old and settled in Knoxville, Tennessee. In 1881, he was admitted to the University of Tennessee Medical School and graduated with highest honors in 1883. After training in New York University Hospital, he refused the offer of professorship from the University of Tennessee to become a medical missionary to Korea. He arrived in Seoul on June 21, 1885 and began to work in Royal Government Hospital, Chejungwon, the predecessor of Severance Hospital. In 1887, he became the superintendent of the Hospital following Dr. Horace N. Allen. He also worked for the Royal family and sometimes traveled to the rural areas to care for the patients. He started Chejungwon Church which later became Namdaemoon Presbyterian Church. In 1887, Dr. Heron worked as a member of the Bible translation committee and in 1889, he was elected as the chairman of the Public Committee of the Presbyterian Churches. In 1890, he established 'The Korean Religious Tract Society (Chosunsyungkyoseohoi) with Underwood and Ohlinger. The society published and replenished Christian books, periodical magazines and booklets. In the Summer of 1890, Dr. Heron did his best to take care of the sick suffering from an epidemic dysentery and himself got infected because of the terrible overwork. He passed away on July 26th, 1890. On his deathbed, he told his soldier and native friends around him as follow: "Jesus loves you. He gave His life for you. Stand by Him!" The martyrdom of Dr. Heron should be remembered in the Korean history of mission, because he was the first victim among the foreign missionaries who had lived and worked in Seoul for Korean mission. Dr. Heron's mind of love, service and devotion should be remembered by the medical doctors working today in caring for the patients suffering from physical and spiritual illnesses.

The significance of fistulography in treatment of anal fistula

No abstract available.

Breast cancer during pregnancy and lactation

No abstract available.

Clinical observation of the arteriovenous fistula for hemodialysis

No abstract available.

A Case of Multifocal Cerebral Infarction Associated with Pseudoxanthoma Elasticum

Pseudoxanthoma elasticum is a rare, hereditable disease of connective tissue, characterzed by abberrant calcification of the elastic tissue of the skin, eyes, vasculature. We report a 61years old female patient with pseudoxanthoma elasticum with typical peau d'orange skin lesion around the neck, angioid streaks in the retina and multifocal cerebral infarction.

Effect of impermeants on the change of weight in cold-stored rat liver

No abstract available.

Surgical management of traumatic duodenal injuries

No abstract available.

Time-related morphological changes in cold-stored rat livers / 대한이식학회지

No abstract available.

Effect of GCV on Neuroblastoma Cell Line Expressed by HSV-TK Gene with Retroviral Vector

Background : Gene transfer with vectors derived from murine retroviruses is restricted to cells which are proliferating and synthesizing DNA at the time of infection. Accordingly, selective introduction of genes encoding for susceptibility to otherwise nontoxic drugs (suicide genes) into proliferating tumor may be used to treat cancer. We investigated the efficacy of in vitro transduction of neuroblastoma cell with the herpes simplex-thymidine kinase (HSV-tk) gene followed by administration of the antiviral drug ganciclovir. METHODS: The LNC/tK vector was transfered in vitro into mouse Neuro 2a cell lines (ATCC) and the transduced cell lines were selected in G-418, 500microgram/ml, for 14 days. Onex104 cells were cultured in 96 well culture plates in increasing concentrations of ganciclovir for 72 hours. The sesitivity to ganciclivir of these HSV-tk transduced, G-418 selected cells was measured with MTT assay RESULTS: The survival of HSV-tk transduced 1x104 neuro 2a cell lines is 103+/-3.5%, 68+/-4.2%, 54+/-3.8%, 17+/-2.6%, 13+/-3.1% at the concentration of 0, 0.1, 1.0, 10, 20microgram/ml ganciclovir, respectively. And the survival of HSV-tk not transduced 1x104 neuro 2a cell lines is 100+/-4.5%, 97+/-5.6%, 104+/-3.5%, 106+/-3.8%, 101+/-4.2%. CONCLUSION: We concluded that in vitro transduction of neuroblastoma cell with the herpes simplex-thymidine kinase gene followed by administration of the antiviral drug ganciclovir is very effective.