1.Comparative epigenetics of domestic animals: focusing on DNA accessibility and its impact on gene regulation and traits
Journal of Veterinary Science 2025;26(1):e9-
and Relevance: Chromatin accessibility is crucial in gene regulation in domestic animals, influencing development, immune response, and productivity. Despite the progress, more comprehensive epigenomic datasets and cross-species analytical tools are needed to harness chromatin accessibility in domestic animal research. Understanding these mechanisms has practical applications in improving livestock traits, advancing breeding programs, and developing disease-resistant animals, highlighting the importance of integrating epigenetic and genomic tools for enhancing animal health and productivity.
2.Comparative epigenetics of domestic animals: focusing on DNA accessibility and its impact on gene regulation and traits
Journal of Veterinary Science 2025;26(1):e9-
and Relevance: Chromatin accessibility is crucial in gene regulation in domestic animals, influencing development, immune response, and productivity. Despite the progress, more comprehensive epigenomic datasets and cross-species analytical tools are needed to harness chromatin accessibility in domestic animal research. Understanding these mechanisms has practical applications in improving livestock traits, advancing breeding programs, and developing disease-resistant animals, highlighting the importance of integrating epigenetic and genomic tools for enhancing animal health and productivity.
3.Comparative epigenetics of domestic animals: focusing on DNA accessibility and its impact on gene regulation and traits
Journal of Veterinary Science 2025;26(1):e9-
and Relevance: Chromatin accessibility is crucial in gene regulation in domestic animals, influencing development, immune response, and productivity. Despite the progress, more comprehensive epigenomic datasets and cross-species analytical tools are needed to harness chromatin accessibility in domestic animal research. Understanding these mechanisms has practical applications in improving livestock traits, advancing breeding programs, and developing disease-resistant animals, highlighting the importance of integrating epigenetic and genomic tools for enhancing animal health and productivity.
4.Comparative epigenetics of domestic animals: focusing on DNA accessibility and its impact on gene regulation and traits
Journal of Veterinary Science 2025;26(1):e9-
and Relevance: Chromatin accessibility is crucial in gene regulation in domestic animals, influencing development, immune response, and productivity. Despite the progress, more comprehensive epigenomic datasets and cross-species analytical tools are needed to harness chromatin accessibility in domestic animal research. Understanding these mechanisms has practical applications in improving livestock traits, advancing breeding programs, and developing disease-resistant animals, highlighting the importance of integrating epigenetic and genomic tools for enhancing animal health and productivity.
5.Langerhans Cell Histiocytosis with the Synchronous Invasion of Stomach and Colon in an Adult Patient: A Case Report
Seong Je KIM ; Se In HAH ; Ji Yoon KWAK ; Jung Woo CHOI ; Hyun Chin CHO ; Chang Yoon HA ; Woon Tae JUNG ; Ok Jae LEE ; Chang Min LEE
The Korean Journal of Gastroenterology 2022;80(3):149-153
Langerhans cell histiocytosis (LCH) is reported less frequently in adults than in children. The most common site of involvement in adults is the bone, accounting for 30-50% of cases. The gastrointestinal tract is very rare, accounting for approximately 2%. We present a case of Langerhans cell histiocytosis that simultaneously invaded multiple organs, including the stomach and colon, in an adult. A 37-year-old woman with no underlying disease complained of chest discomfort and a palpable right submandibular mass. A right Level II neck mass and mediastinal LN enlargement were confirmed on the pharynx and chest CT scan. Multiple subepithelial masses with central ulceration and erosion were observed in the corpus and fundus on the esophagogastroduodenoscopy and in the right colon on the colonoscopy. The histopathology findings were the same in each tissue biopsied from the stomach, colon, and right neck lymph nodes. Langerhans cells with classical reniform nuclei and prominent eosinophils invaded the normal glands, and S100 and CD1a were positive in the immunohistochemical stain. Gastrointestinal involvement of LCH in adults is rare, asymptomatic,and can involve multiple digestive organs simultaneously, so upper endoscopy and colonoscopy should be considered for a diagnosis.
6.Sebaceous carcinoma arising from sebaceoma
Da Woon LEE ; Si Hyun KWAK ; Jun Hyuk KIM ; Je Yeon BYEON ; Hyun Joo LEE ; Hwan Jun CHOI
Archives of Craniofacial Surgery 2021;22(2):126-130
Sebaceous neoplasms are rare adnexal tumors that can present a challenge to clinicians. Only four cases of sebaceous carcinoma with sebaceoma have been reported in the literature. Herein, we describe the case of a sebaceous carcinoma originating from a sebaceoma in a solitary nodule of the posterior neck. Immunohistochemically, the tumor cells were strongly positive for epithelial membrane antigen and p53. It is possible that adnexal carcinomas may arise from malignant transformation of their benign counterparts as well as de novo. Malignant transformation was likely in this case because the lesion was composed of distinct benign and malignant components, and the benign component showed the typical histopathological features of sebaceoma. This case underscores the fact that partial and superficial biopsies sometimes may not provide the correct diagnosis. If a surgeon suspects malignancy based on a clinical examination, then it is mandatory to perform a deep biopsy.
7.Sebaceous carcinoma arising from sebaceoma
Da Woon LEE ; Si Hyun KWAK ; Jun Hyuk KIM ; Je Yeon BYEON ; Hyun Joo LEE ; Hwan Jun CHOI
Archives of Craniofacial Surgery 2021;22(2):126-130
Sebaceous neoplasms are rare adnexal tumors that can present a challenge to clinicians. Only four cases of sebaceous carcinoma with sebaceoma have been reported in the literature. Herein, we describe the case of a sebaceous carcinoma originating from a sebaceoma in a solitary nodule of the posterior neck. Immunohistochemically, the tumor cells were strongly positive for epithelial membrane antigen and p53. It is possible that adnexal carcinomas may arise from malignant transformation of their benign counterparts as well as de novo. Malignant transformation was likely in this case because the lesion was composed of distinct benign and malignant components, and the benign component showed the typical histopathological features of sebaceoma. This case underscores the fact that partial and superficial biopsies sometimes may not provide the correct diagnosis. If a surgeon suspects malignancy based on a clinical examination, then it is mandatory to perform a deep biopsy.
8.Analysis on mandibular movement using the JT-3D system
Joo-Hun SONG ; Ryeo-Woon KIM ; Jae-Joon BYUN ; Hee-Jung KIM ; Yu-ri HEO ; Gyeong-Je LEE
Journal of Dental Rehabilitation and Applied Science 2020;36(2):80-87
Purpose:
This study aims to measure the mandibular movement using JT-3D system and provide a range of mandibular movement that can serve as a good reference for diagnosing the temporomandibular disorder.
Materials and Methods:
This study was conducted in 60 young male and female adults. The maximum opening and closing movement was recorded using JT-3D system, and by regarding 5 times of repetitive movement as 1 cycle of movement, total 3 cycles of movement were recorded. During the maximum opening, vertical position of lower jaw, antero-posterior position, lateral deflection position, and maximum opening distance were recorded. To evaluate the reproducibility of JT-3D system, statistical analysis were conducted (α = 0.05).
Results:
During the maximum opening, the average value appeared at 31.56 mm vertically and 24.42 mm rearwardly, lateral deflection position 0.72 mm, and maximum opening distance 40.32 mm. There was no statistical significance in all measured values for three cycles of movement recorded with JT-3D system (P > 0.05).
Conclusion
During the maximum opening, the average value appeared at 0.72 mm in lateral deflection position and the maximum opening distance at 40.32 mm, and the analysis on the maximum opening of lower jaw using JT-3D system showed sufficiently reproducible results.
9.Nurses' Job Analysis in a Regional Emergency Center Using the DACUM
Hee Je YUN ; Eun Hee JUNG ; Woon Seon JUNG ; Sang Rim LEE ; Young Ok KWON
Journal of Korean Clinical Nursing Research 2020;26(1):26-46
Purpose:
This study aimed to establish the role of and to analyze the job of nurses in a regional emergency center using the Developing a Curriculum(DACUM) process, a job analysis technique.
Methods:
The DACUM committee was organized, and three workshops were held from June 1st to July 4th, 2016. One hundred two nurses in a regional emergency center participated in a survey from October 3rd to 10th, 2016. The frequency, importance and difficulty of each tasks and task elements in the DACUM were investigated on a Likert scale.
Results:
The roles of nurses in a regional emergency center were identified and the DACUM chart was developed with 6 duties, 29 tasks and 153 task elements. According to the survey, some tasks such as ‘CPR,’ ‘acute respiratory distress care,’ and ‘drug administration’ showed high frequency and importance or difficulty in all nursing units in common, and different results reflected the characteristics of each nursing unit were also found.
Conclusion
The results showed the feature of the regional emergency center. Based on these results, it is necessary to develop educational programs for practice.
10.Congenital Jejunal Diverticular Bleeding in a Young Adult.
Ji Yung LEE ; Jae Young JANG ; Min Je KIM ; Tae In LEE ; Jung Wook KIM ; Young Woon CHANG
Clinical Endoscopy 2017;50(5):495-499
Diverticular bleeding of the small bowel is rare and occurs primarily in adults aged more than 60 years. In younger adults, Meckel's diverticulum, a true diverticulum that congenitally occurs in the distal ileum, is the most common cause of diverticular bleeding of the small bowel. Unlike Meckel's diverticula, other kinds of small bowel diverticula are not congenital and their incidence is related to age. Furthermore, congenital true diverticular bleeding of the jejunum in adults is very rare. We report the case of a 24-year-old man with subepithelial tumor-like lesion accompanied with obscure overt gastrointestinal bleeding. This lesion was initially suspected to be a subepithelial tumor based on radiologic tests and capsule endoscopy. He was finally diagnosed with a congenital true diverticulum in the jejunum with the appearance of a Meckel's diverticulum after surgical resection.
Adult
;
Capsule Endoscopy
;
Diverticulum
;
Gastrointestinal Hemorrhage
;
Hemorrhage*
;
Humans
;
Ileum
;
Incidence
;
Jejunum
;
Meckel Diverticulum
;
Neoplasms, Glandular and Epithelial
;
Young Adult*

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