1.PAIVS: prediction of avian influenza virus subtype
Hyeon-Chun PARK ; Juyoun SHIN ; Sung-Min CHO ; Shinseok KANG ; Yeun-Jun CHUNG ; Seung-Hyun JUNG
Genomics & Informatics 2020;18(1):e5-
Highly pathogenic avian influenza (HPAI) viruses have caused severe respiratory disease and death in poultry and human beings. Although most of the avian influenza viruses (AIVs) are of low pathogenicity and cause mild infections in birds, some subtypes including hemagglutinin H5 and H7 subtype cause HPAI. Therefore, sensitive and accurate subtyping of AIV is important to prepare and prevent for the spread of HPAI. Next-generation sequencing (NGS) can analyze the full-length sequence information of entire AIV genome at once, so this technology is becoming a more common in detecting AIVs and predicting subtypes. However, an analysis pipeline of NGS-based AIV sequencing data, including AIV subtyping, has not yet been established. Here, in order to support the pre-processing of NGS data and its interpretation, we developed a user-friendly tool, named prediction of avian influenza virus subtype (PAIVS). PAIVS has multiple functions that support the pre-processing of NGS data, reference-guided AIV subtyping, de novo assembly, variant calling and identifying the closest full-length sequences by BLAST, and provide the graphical summary to the end users.
2.PAIVS: prediction of avian influenza virus subtype
Hyeon-Chun PARK ; Juyoun SHIN ; Sung-Min CHO ; Shinseok KANG ; Yeun-Jun CHUNG ; Seung-Hyun JUNG
Genomics & Informatics 2020;18(1):e5-
Highly pathogenic avian influenza (HPAI) viruses have caused severe respiratory disease and death in poultry and human beings. Although most of the avian influenza viruses (AIVs) are of low pathogenicity and cause mild infections in birds, some subtypes including hemagglutinin H5 and H7 subtype cause HPAI. Therefore, sensitive and accurate subtyping of AIV is important to prepare and prevent for the spread of HPAI. Next-generation sequencing (NGS) can analyze the full-length sequence information of entire AIV genome at once, so this technology is becoming a more common in detecting AIVs and predicting subtypes. However, an analysis pipeline of NGS-based AIV sequencing data, including AIV subtyping, has not yet been established. Here, in order to support the pre-processing of NGS data and its interpretation, we developed a user-friendly tool, named prediction of avian influenza virus subtype (PAIVS). PAIVS has multiple functions that support the pre-processing of NGS data, reference-guided AIV subtyping, de novo assembly, variant calling and identifying the closest full-length sequences by BLAST, and provide the graphical summary to the end users.
3.Mutational signatures and chromosome alteration profiles of squamous cell carcinomas of the vulva
Mi Ryung HAN ; Sun SHIN ; Hyeon Chun PARK ; Min Sung KIM ; Sung Hak LEE ; Seung Hyun JUNG ; Sang Yong SONG ; Sug Hyung LEE ; Yeun Jun CHUNG
Experimental & Molecular Medicine 2018;50(2):e442-
Vulvar squamous cell carcinoma (SCC) consists of two different etiologic categories: human papilloma virus (HPV)-associated (HPV (+)) and HPV-non-associated (HPV (−)). There have been no genome-wide studies on the genetic alterations of vulvar SCCs or on the differences between HPV (+) and HPV (−) vulvar SCCs. In this study, we performed whole-exome sequencing and copy number profiling of 6 HPV (+) and 9 HPV (−) vulvar SCCs and found known mutations (TP53, CDKN2A and HRAS) and copy number alterations (CNAs) (7p and 8q gains and 2q loss) in HPV (−) SCCs. In HPV (+), we found novel mutations in PIK3CA, BRCA2 and FBXW7 that had not been reported in vulvar SCCs. HPV (−) SCCs exhibited more mutational loads (numbers of nonsilent mutations and driver mutations) than HPV (+) SCCs, but the CNA loads and mutation signatures between HPV (+) and HPV (−) SCCs did not differ. Of note, 40% and 40% of the 15 vulvar SCCs harbored PIK3CA and FAT1 alterations, respectively. In addition, we found that the SCCs harbored kataegis (a localized hypermutation) in 2 HPV (+) SCCs and copy-neutral losses of heterozygosity in 4 (one HPV (+) and 3 HPV (−)) SCCs. Our data indicate that HPV (+) and HPV (−) vulvar SCCs may have different mutation and CNA profiles but that there are genomic features common to SCCs. Our data provide useful information for both HPV (+) and HPV (−) vulvar SCCs and may aid in the development of clinical treatment strategies.
4.Laparoscopic repair of a rectal fistula due to a benign ovarian dermoid cyst.
Ji Hye KIM ; Gun Oh CHONG ; Da Som CHUN ; Soo Yeun PARK ; Yoon Hee LEE ; Dae Gy HONG
Obstetrics & Gynecology Science 2017;60(4):383-386
Ovarian dermoid cysts are one of the most common benign neoplasms in women. Rectal fistula formation due to an ovarian dermoid cyst, particularly a benign dermoid cyst, is extremely rare. A 17-year-old girl with symptoms of lower abdominal pain, passage of sebaceous materials in the stool, and hematochezia was found to have an 11-cm dermoid cyst complicated with a rectal fistula formation. Laparoscopic repair of the rectal fistula was performed successfully with bilateral ovarian cystectomies. This case presents the rare formation of a fistula between a benign dermoid cyst and the rectum and its treatment using laparoscopic repair without laparotomy.
Abdominal Pain
;
Adolescent
;
Cystectomy
;
Dermoid Cyst*
;
Female
;
Fistula
;
Gastrointestinal Hemorrhage
;
Humans
;
Laparoscopy
;
Laparotomy
;
Rectal Fistula*
;
Rectum
5.Evaluation of a Community-based participatory professional periodontal care program for hypertension and diabetes patients.
Su Kyung PARK ; Ga Yeong LEE ; Yeun Ju KIM ; Min Young LEE ; Do Hwa BYUN ; Kyung Hee KIM ; Hyo Rim SON ; Chun Bae KIM ; Yang Heui AHN ; Nam Hee KIM
Journal of Korean Academy of Oral Health 2017;41(1):56-64
OBJECTIVES: To evaluate the Community-Based Participatory Research (CBPR) professional periodontal care program model for patients with hypertension and diabetes. METHODS: This descriptive case study included 151 participants of the professional periodontal care program. The CBPR-based professional periodontal care program consists of 5-steps: ‘Issue identification and prioritization’ (Step 1), ‘Strategy development’ (Step 2), ‘Entry into community’ (Step 3), ‘Implementation’ (Step 4), and ‘Transition’ (Step 5). Quantitative data were analyzed using frequency analysis, and descriptive data with PASW 23.0 (SPSS Inc., Chicago, IL, USA). The results of the Focus group interview (FGI) were classified as ‘general opinions regarding the program planning and operation receptiveness’, ‘sustainability’, ‘potential spread of the program’, and ‘improvement of program’. The interviews were qualitative research involving seven people. RESULTS: 1. Participants increased their interest in health and oral health by managing their hypertension, diabetes, and periodontal disease using community resources. Through this, healthy practices and improved awareness helped to prevent complications and manage periodontal diseases. 2. Community organizations actively cooperated, resulting in positive changes in oral health practices (increased registration of patients in education centers for hypertension and diabetes, and increased number of patients visiting the local dental clinic). In the future, it was positive to participate in the program continuously. CONCLUSIONS: The most important step is ‘Entry into community’, which has led to active participation and cooperation of community organizations and participants. Therefore, community organizations and strategy development should be discussed, and the role of community leaders should be emphasized to build cooperative relationships. In addition, participation in and collaboration with health-based projects should be achieved through a search of various community organizations.
Chronic Disease
;
Community-Based Participatory Research
;
Consumer Participation
;
Cooperative Behavior
;
Education
;
Focus Groups
;
Humans
;
Hypertension*
;
Oral Health
;
Periodontal Diseases
;
Qualitative Research
6.Knowledge of HPV and Surgery among Women Who Underwent Cervical Conization: A Korean Multi-Center Study.
So Yeun JUN ; Se Ik KIM ; Myong Cheol LIM ; Jung Yun LEE ; San Hui LEE ; Yong Jung SONG ; Kyoung Chul CHUN ; Jae Weon KIM ; Sang Yoon PARK
Yonsei Medical Journal 2016;57(5):1222-1229
PURPOSE: Human papillomavirus (HPV) infection is a well-known cause of cervical cancer, which, along with its precursors, can be diagnosed and treated with cervical conization (CC). This study aimed to assess HPV- and procedure-related knowledge among women who had undergone CC. MATERIALS AND METHODS: Between February and May 2014, consecutive women who had undergone CC at five different educational hospitals were recruited. All patients had undergone a loop electrosurgical excision procedure as the method of CC. A survey was conducted with a self-developed, 29-item questionnaire, measuring knowledge related to HPV and CC. We analyzed the responses of 160 patients who completed the questionnaire. RESULTS: Mean total knowledge scores (±standard deviation) for HPV and CC were 5.2±3.0 of a possible 13.0 and 8.3±4.2 of a possible 16.0, respectively. While 73% of the patients knew that HPV is the main cause of cervical cancer, only 44% knew that HPV is sexually transmitted. The purpose of CC was correctly identified by 71% of the patients. However, 35% failed to indicate the anatomical area resected at the time of CC in the schematic diagram. Women who were younger (p<0.001), had higher education level (p<0.001), and higher family income (p=0.008) had higher knowledge scores. In contrast, neither interval from CC to survey nor disease severity were associated with total knowledge score. CONCLUSION: The level of knowledge related to HPV and CC was unexpectedly low in women who had undergone CC. Intuitive educational resources may improve this knowledge, and further cohort studies are warranted.
Adult
;
Cervix Uteri/*pathology/*virology
;
*Conization
;
Female
;
*Health Knowledge, Attitudes, Practice
;
Humans
;
Middle Aged
;
Papillomaviridae/*physiology
;
Republic of Korea
;
Sexual Behavior
;
*Surveys and Questionnaires
;
Uterine Cervical Neoplasms/virology
;
Young Adult
7.Laparoscopic para-aortic lymph node dissection for patients with primary colorectal cancer and clinically suspected para-aortic lymph nodes.
Sung Ho SONG ; Soo Yeun PARK ; Jun Seok PARK ; Hye Jin KIM ; Chun Seok YANG ; Gyu Seog CHOI
Annals of Surgical Treatment and Research 2016;90(1):29-35
PURPOSE: Treatment of patients with para-aortic lymph node metastasis from colorectal cancer is controversial. The goal of this study was to investigate the technical feasibility of laparoscopic intrarenal para-aortic lymph node dissection in patients with colorectal cancer and clinically suspected para-aortic lymph node dissection. METHODS: The inclusion criteria for the laparoscopic approach were patients with infrarenal para-aortic lymph node metastasis from colorectal cancer. Patients who had any other distant metastatic lesion or metachronous para-aortic lymph node metastasis were excluded from this study. Perioperative outcomes and survival outcomes were analyzed. RESULTS: Between November 2004 and October 2013, 40 patients underwent laparoscopic para-aortic lymph node dissection. The mean operating time was 192.3 +/- 68.8 minutes (range, 100-400 minutes) and the mean estimated blood loss was 65.6 +/- 52.6 mL (range, 20-210 mL). No patient required open conversion. The postoperative complication rate was 15.0%. Sixteen patients (40.0%) had pathologically positive lymph nodes. In patients with metastatic para-aortic lymph nodes, the 3-year overall survival rate and disease-free survival rate were 65.7% and 40.2%, respectively. CONCLUSION: The results of our study suggest that a laparoscopic approach for patients with colorectal cancer with metastatic para-aortic lymph nodes can be a reasonable option for selected patients.
Colorectal Neoplasms*
;
Disease-Free Survival
;
Humans
;
Laparoscopy
;
Lymph Node Excision*
;
Lymph Nodes*
;
Neoplasm Metastasis
;
Postoperative Complications
;
Survival Rate
8.A 7-year study of the regional distribution of differences in scaling experience rate among Koreans.
Young Eun JANG ; Min Young LEE ; Su kyung PARK ; Yeun Ju KIM ; Ga Yeung LEE ; Chun Bae KIM ; Nam Hee KIM
Journal of Korean Academy of Oral Health 2015;39(3):201-206
OBJECTIVES: The aim of this 7-year study was to examine regional differences in scaling experience rate. METHODS: This study used data on scaling experience rate from the Community Health Survey (CHS) obtained between 2008 and 2014. The standardized frequency of scaling experience rate was analyzed using the SPSS 20.0 program, and shown as a Box Plot. Using the Map Wizard for Excel 10.0, the scaling experience rate in each region was illustrated using Geographic Information System (GIS). RESULTS: The scaling experience rate in 2008 was 18.6% and in 2014, was 34.9%. From 2008 to 2014, the annual rate of scaling experience increased approximately 1.8 times. The scaling experience appeared to form clustering on GIS, and there were differences in scaling experience rate between cities, towns, and districts. Although the scaling experience rate increased, the gap between regions seems consistent. CONCLUSIONS: The Scaling Experience rate increased annually, but regional differences did not decrease. Therefore, oral health care professionals in each community should strive to improve the scaling experience rate.
Geographic Information Systems
;
Health Surveys
;
Oral Health
9.Asystole during microvascular decompression in case of trigeminal neuralgia: A case report.
Su Yeon LEE ; Duk Hee CHUN ; Taekyu LEE ; Min young KIM ; Soo yeun PARK
Anesthesia and Pain Medicine 2014;9(1):58-60
Manipulation of the sensory branches of the trigeminal nerve is known to cause autonomic changes, such as bradycardia or asystole, known as the trigemino-cardiac reflex. In this case, the patient underwent microvascular decompression due to trigeminal neuralgia and developed sudden bradycardia, followed by abrupt asystole with a concurrent fall in the systolic blood pressure. There was spontaneous return of cardiac rhythm and blood pressure, but two more episodes of sinus bradycardia occurred during the surgery.
Blood Pressure
;
Bradycardia
;
Heart Arrest*
;
Humans
;
Microvascular Decompression Surgery*
;
Reflex, Trigeminocardiac
;
Trigeminal Nerve
;
Trigeminal Neuralgia*
10.Association between Intracellular Infectious Agents and Schizophrenia.
Mi Hee PARK ; Young Joon KWON ; Hee Yeun JEONG ; Hwa Young LEE ; Young HWANGBO ; Hee Jung YOON ; Se Hoon SHIM
Clinical Psychopharmacology and Neuroscience 2012;10(2):117-123
OBJECTIVE: A number of studies have reported association between Toxoplasma gondii (T. gondii) and Chlamydia infection and the risk of schizophrenia. The aim of the present study was to compare the prevalence of T. gondii and Chlamydia infection between the schizophrenia and normal control subjects and to compare the clinical features between seropositive and seronegative schizophrenia patients. METHODS: The rate of serum reactivity to T. gondii, Chlamydia trachomatis (C. trachomatis), Chlamydia pneumonia in 96 schizophrenia and 50 control subjects was investigated using enzyme-linked immunosorbent assay and indirect fluorescent antibody technique. The clinical symptoms of the schizophrenia patients were scored with Positive and Negative Syndrome Scale and a comparative analysis was carried out. RESULTS: A significant positive association between immunoglobulin G (IgG) antibodies to T. gondii and C. trachomatis in schizophrenia was found, and the odds ratio of schizophrenia associated with IgG antibody was found to be 3.22 and 2.86, respectively. The Toxoplasma-seropositive schizophrenia patient had higher score on the negative subscale N1 and N7 and general psychopathology subscale G13, while C. trachomatis-seropositive schizophrenia patient had higher score on the general psychopathology subscale G10. CONCLUSION: The results from the present study suggest significant association between T. gondii, C. trachomatis infection and schizophrenia. In future, further studies are needed to elucidate the correlation between the two types of infection and schizophrenia.
Antibodies
;
Chlamydia
;
Chlamydia Infections
;
Chlamydia trachomatis
;
Chlamydophila pneumoniae
;
Enzyme-Linked Immunosorbent Assay
;
Fluorescent Antibody Technique, Indirect
;
Humans
;
Immunoglobulin G
;
Odds Ratio
;
Pneumonia
;
Prevalence
;
Psychopathology
;
Schizophrenia
;
Toxoplasma

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