1.Immunosuppression-enhancing effect of the administration of allogeneic canine adipose-derived mesenchymal stem cells (cA-MSCs) compared with autologous cA-MSCs in vitro
Hayeon WI ; Seunghoon LEE ; Youngim KIM ; Jin-Gu NO ; Poongyeon LEE ; Bo Ram LEE ; Keon Bong OH ; Tai-young HUR ; Sun A OCK
Journal of Veterinary Science 2021;22(5):e63-
Background:
Recently, mesenchymal stem cells therapy has been performed in dogs, although the outcome is not always favorable.
Objectives:
To investigate the therapeutic efficacy of mesenchymal stem cells (MSCs) using dog leukocyte antigen (DLA) matching between the donor and recipient in vitro.
Methods:
Canine adipose-derived MSCs (cA-MSCs) isolated from the subcutaneous tissue of Dog 1 underwent characterization. For major DLA genotyping (DQA1, DQB1, and DRB1), peripheral blood mononuclear cells (PBMCs) from two dogs (Dogs 1 and 2) were analyzed by direct sequencing of polymerase chain reaction (PCR) products. The cA-MSCs were co-cultured at a 1:10 ratio with activated PBMCs (DLA matching or mismatching) for 3 days and analyzed for immunosuppressive ( IDO, PTGS2, and PTGES ), inflammatory (IL6 and IL10 ), and apoptotic genes (CASP8, BAX, TP53, and BCL2) by quantitative real-time reverse transcriptase-PCR.
Results:
cA-MSCs were expressed cell surface markers such as CD90+/44+/29+/45- and differentiated into osteocytes, chondrocytes, and adipocytes in vitro. According to the Immuno Polymorphism Database, DLA genotyping comparisons of Dogs 1 and 2 revealed complete differences in genes DQA1, DQB1, and DRB1. In the co-culturing of cA-MSCs and PBMCs, DLA mismatch between the two cell types induced a significant increase in the expression of immunosuppressive (IDO/PTGS2) and apoptotic (CASP8/BAX) genes.
Conclusions
The administration of cA-MSCs matching the recipient DLA type can alleviate the need to regulate excessive immunosuppressive responses associated with genes, such as IDO and PTGES. Furthermore, easy and reliable DLA genotyping technology is required because of the high degree of genetic polymorphisms of DQA1, DQB1, and DRB1 and the low readability of DLA 88.
2.Immunosuppression-enhancing effect of the administration of allogeneic canine adipose-derived mesenchymal stem cells (cA-MSCs) compared with autologous cA-MSCs in vitro
Hayeon WI ; Seunghoon LEE ; Youngim KIM ; Jin-Gu NO ; Poongyeon LEE ; Bo Ram LEE ; Keon Bong OH ; Tai-young HUR ; Sun A OCK
Journal of Veterinary Science 2021;22(5):e63-
Background:
Recently, mesenchymal stem cells therapy has been performed in dogs, although the outcome is not always favorable.
Objectives:
To investigate the therapeutic efficacy of mesenchymal stem cells (MSCs) using dog leukocyte antigen (DLA) matching between the donor and recipient in vitro.
Methods:
Canine adipose-derived MSCs (cA-MSCs) isolated from the subcutaneous tissue of Dog 1 underwent characterization. For major DLA genotyping (DQA1, DQB1, and DRB1), peripheral blood mononuclear cells (PBMCs) from two dogs (Dogs 1 and 2) were analyzed by direct sequencing of polymerase chain reaction (PCR) products. The cA-MSCs were co-cultured at a 1:10 ratio with activated PBMCs (DLA matching or mismatching) for 3 days and analyzed for immunosuppressive ( IDO, PTGS2, and PTGES ), inflammatory (IL6 and IL10 ), and apoptotic genes (CASP8, BAX, TP53, and BCL2) by quantitative real-time reverse transcriptase-PCR.
Results:
cA-MSCs were expressed cell surface markers such as CD90+/44+/29+/45- and differentiated into osteocytes, chondrocytes, and adipocytes in vitro. According to the Immuno Polymorphism Database, DLA genotyping comparisons of Dogs 1 and 2 revealed complete differences in genes DQA1, DQB1, and DRB1. In the co-culturing of cA-MSCs and PBMCs, DLA mismatch between the two cell types induced a significant increase in the expression of immunosuppressive (IDO/PTGS2) and apoptotic (CASP8/BAX) genes.
Conclusions
The administration of cA-MSCs matching the recipient DLA type can alleviate the need to regulate excessive immunosuppressive responses associated with genes, such as IDO and PTGES. Furthermore, easy and reliable DLA genotyping technology is required because of the high degree of genetic polymorphisms of DQA1, DQB1, and DRB1 and the low readability of DLA 88.
3.Consensus guidelines for the definition of the end stage of disease and last days of life and criteria for medical judgment
Sang Min LEE ; Su Jung KIM ; Youn Seon CHOI ; Dae Seog HEO ; Sujin BAIK ; Bo Moon CHOI ; Daekyun KIM ; Jae Young MOON ; So Young PARK ; Yoon Jung CHANG ; In Cheol HWANG ; Jung Hye KWON ; Sun Hyun KIM ; Yu Jung KIM ; Jeanno PARK ; Ho Jung AHN ; Hyun Woo LEE ; Ivo KWON ; Do Kyong KIM ; Ock Joo KIM ; Sang Ho YOO ; Yoo Seock CHEONG ; Younsuck KOH
Journal of the Korean Medical Association 2018;61(8):509-521
In Korea, the Hospice, Palliative Care, and Life-sustaining Treatment Decision-making Act was enacted in February 2016 in order to ensure that the patient's self-determination in end-of-life care processes is respected. To enhance physicians' understanding of this act and to provide proper criteria for medical judgment in variety of clinical settings, consensus guidelines were published in November 2016. In this article, the characteristics of these guidelines and related issues regarding the definitions of ‘the end stage of disease’ and ‘last days of life’ and the criteria for medical judgment are presented and summarized. According to the guidelines, the term ‘end stage of disease’ refers to a state in which there is no possibility of a fundamental recovery and the symptoms are expected to worsen within months. The terms ‘the last days of life’ and ‘the final days of life’ refer to a state in which, despite treatment, the patient's condition is worsening and death is impending, with no possibility of recovery. The attending physician and another relevant specialist should both judge a patient's medical condition as either ‘end stage of disease’ for hospice/palliative care or ‘the last days of life’ for dying patient care according to the law. Caregivers should provide appropriate medical information to eligible patients for palliative or ‘end stage of disease’ care through advance care planning. Therefore, it is critically necessary that caregivers understand the legitimate process of hospice/palliative and dying patient care based on the patient's wishes and best interests. Physicians should apply these consensus guidelines to eligible patients considering their clinical course and the patients' wishes.
Advance Care Planning
;
Caregivers
;
Consensus
;
Hospices
;
Humans
;
Judgment
;
Jurisprudence
;
Korea
;
Palliative Care
;
Patient Care
;
Specialization
4.Consensus guidelines for the definition of the end stage of disease and last days of life and criteria for medical judgment
Sang Min LEE ; Su Jung KIM ; Youn Seon CHOI ; Dae Seog HEO ; Sujin BAIK ; Bo Moon CHOI ; Daekyun KIM ; Jae Young MOON ; So Young PARK ; Yoon Jung CHANG ; In Cheol HWANG ; Jung Hye KWON ; Sun Hyun KIM ; Yu Jung KIM ; Jeanno PARK ; Ho Jung AHN ; Hyun Woo LEE ; Ivo KWON ; Do Kyong KIM ; Ock Joo KIM ; Sang Ho YOO ; Yoo Seock CHEONG ; Younsuck KOH
Journal of the Korean Medical Association 2018;61(8):509-521
In Korea, the Hospice, Palliative Care, and Life-sustaining Treatment Decision-making Act was enacted in February 2016 in order to ensure that the patient's self-determination in end-of-life care processes is respected. To enhance physicians' understanding of this act and to provide proper criteria for medical judgment in variety of clinical settings, consensus guidelines were published in November 2016. In this article, the characteristics of these guidelines and related issues regarding the definitions of ‘the end stage of disease’ and ‘last days of life’ and the criteria for medical judgment are presented and summarized. According to the guidelines, the term ‘end stage of disease’ refers to a state in which there is no possibility of a fundamental recovery and the symptoms are expected to worsen within months. The terms ‘the last days of life’ and ‘the final days of life’ refer to a state in which, despite treatment, the patient's condition is worsening and death is impending, with no possibility of recovery. The attending physician and another relevant specialist should both judge a patient's medical condition as either ‘end stage of disease’ for hospice/palliative care or ‘the last days of life’ for dying patient care according to the law. Caregivers should provide appropriate medical information to eligible patients for palliative or ‘end stage of disease’ care through advance care planning. Therefore, it is critically necessary that caregivers understand the legitimate process of hospice/palliative and dying patient care based on the patient's wishes and best interests. Physicians should apply these consensus guidelines to eligible patients considering their clinical course and the patients' wishes.
5.Effect of Glucagon-like Peptide-1 on the Differentiation of Adipose-derived Stem Cells into Osteoblasts and Adipocytes.
Hye Min LEE ; Bo Sun JOO ; Chang Hoon LEE ; Heung Yeol KIM ; Ji Hoon OCK ; Young Seok LEE
Journal of Menopausal Medicine 2015;21(2):93-103
OBJECTIVES: Glucagon-like peptide-1 (GLP-1) is an intestinally secreted hormone and it plays an important role in the regulation of glucose homeostasis. However, the possible role of GLP-1 in the differentiation of adipose-derived stem cells (ADSCs) remains unknown. Therefore this study investigated the effect of GLP-1 on the differentiation of ADSCs into osteoblasts and adipocytes. METHODS: ADSCs were isolated from human adipose tissues of the abdomens, cultured and characterized by flow cytometry and multi-lineage potential assay. ADSCs were induced in osteogenic and adipogenic media treated with two different doses (10 and 100 nM) of GLP-1, and then the effect of GLP-1 on differentiation of ADSCs into osteoblast and adipocyte was examined. The signaling pathway involved in these processes was also examined. RESULTS: Isolated human ADSCs expressed mesenchymal stem cell (MSC) specific markers as well as GLP-1 receptor (GLP-1R) proteins. They also showed multiple-lineage potential of MSC. GLP-1 was upregulated the activity and mRNA expression of osteoblast-specific marker, alkaline phosphatase and the mineralization of calcium. In contrast, GLP-1 significantly suppressed the expression of adipocyte-specific markers, peroxisome proliferator-activated receptor gamma (PPAR-gamma), lipoprotein lipase (LPL) and adipocyte protein 2 (AP2). This decreased expression of adipocyte specific markers caused by GLP-1 was significantly reversed by the treatment of extracellular signal-regulated kinase (ERK) inhibitor, PD98059 (P < 0.05). CONCLUSION: This result demonstrates that GLP-1 stimulates osteoblast differentiation in ADSCs, whereas it inhibits adipocyte differentiation. The ERK signaling pathway seems to be involved in these differentiation processes mediated by GLP-1.
Abdomen
;
Adipocytes*
;
Adipogenesis
;
Adipose Tissue
;
Alkaline Phosphatase
;
Calcium
;
Cell Differentiation
;
Flow Cytometry
;
Glucagon-Like Peptide 1*
;
Glucose
;
Homeostasis
;
Humans
;
Lipoprotein Lipase
;
Mesenchymal Stromal Cells
;
Osteoblasts*
;
Osteogenesis
;
Phosphotransferases
;
PPAR gamma
;
RNA, Messenger
;
Stem Cells*
;
Glucagon-Like Peptide-1 Receptor
6.Extremely Increased Serum Carbohydrate Antigen 19-9 Levels Caused by New or Resistant Infections to Previous Antibiotics in Chronic Lung Diseases.
Ji Young SHIN ; Su Jin YOO ; Bo Mi PARK ; Sung Su JUNG ; Ju Ock KIM ; Jeong Eun LEE
Tuberculosis and Respiratory Diseases 2013;75(3):125-127
In this paper, we describe 72-year-old female patient without evidence of malignant disease presented with significantly elevated serum carbohydrate antigen (CA) 19-9 levels by respiratory infections. She was diagnosed with respiratory infections due to Mycobacterium avium complex and Pseudomonas aeruginosa. The serum CA 19-9 levels remarkably increased (1,453-5,300 U/mL; reference range, <37 U/mL) by respiratory infection and abruptly decreased (357-534 U/mL) whenever infection was controlled by specific treatments. This case suggests that serum CA 19-9 levels may be used as a diagnostic marker to indicate new or resistant infections to previous antibiotics in chronic lung diseases without significant changes in chest X-ray findings.
Aged
;
Anti-Bacterial Agents
;
Female
;
Humans
;
Lung
;
Lung Diseases
;
Lung Neoplasms
;
Mycobacterium avium Complex
;
Pseudomonas aeruginosa
;
Reference Values
;
Respiratory Tract Infections
;
Thorax
7.Immunogenicity and Protective Effectiveness of Japanese Encephalitis Vaccine: A Prospective Multicenter Cohort Study.
Dong Hyun KIM ; Young Jin HONG ; Hoon Jai LEE ; Bo Yul CHOI ; Chang Hwi KIM ; Jae Ock PARK ; Jin Han KANG ; Byung Joon CHOI ; Jong Hyun KIM ; Young Min AHN ; Young Ran JU ; Young Eui JEONG ; Myung Guk HAN
Korean Journal of Pediatric Infectious Diseases 2013;20(3):131-138
PURPOSE: This study aimed to study the antibody response of Japanese encephalitis vaccination in children using different kinds of vaccines (inactivated vaccine, live attenuated vaccine or interchanged) and evaluate the effectiveness of the vaccines to provide the basis of efficient immunization schedule of Japanese encephalitis. METHODS: Measurement of the neutralization antibody (NTAb) titers following Japanese encephalitis vaccination using different vaccines for 170 children, 2-6 year of age, who visited six university hospitals and are confirmed by immunization records. RESULTS: Among 170 children who were given primary immunization on Japanese encephalitis, 103 children were given inactivated vaccine, 64 children were given live attenuated vaccine and 3 children were given interchangeably. NTAb titers were more than 1:10 in all children of three groups. The geographic mean antibody titer was 322 in inactivated vaccine group and 266 in live attenuated vaccine group. However, there was no significant difference between two groups. In both groups, the NTAb titer showed the peak at 1-4 months after the third immunization and declined. The NTAb titers of three children who were given two kinds of vaccines alternately were 1:135, 1:632, and 1:2511, respectively. CONCLUSION: According to the results of this study in children younger than 6 years old, there is no significant difference in effectiveness between inactivated and live attenuated vaccines. However, further studies for the changes of antibody titers for a longer period of time on larger population are required.
Antibodies, Neutralizing
;
Antibody Formation
;
Asian Continental Ancestry Group*
;
Child
;
Cohort Studies*
;
Encephalitis, Japanese*
;
Hospitals, University
;
Humans
;
Immunization
;
Immunization Schedule
;
Prospective Studies*
;
Vaccination
;
Vaccines
;
Vaccines, Attenuated
8.A Case of Atypical Adenomatous Hyperplasia of Larger Than 2 cm.
Bo Mi PARK ; Min Ji CHO ; Hyun Seok LEE ; Dong Il PARK ; Myoung Rin PARK ; Ju Ock KIM ; Jeong Eun LEE ; Choong Sik LEE ; Sung Soo JUNG
Tuberculosis and Respiratory Diseases 2013;74(6):280-285
Atypical adenomatous hyperplasia (AAH) has been considered to be a precursor lesion of bronchioloalveolar carcinoma (BAC) and pulmonary adenocarcinoma. It usually coexists with BAC and/or an adenocarcinoma. Chest computed tomography reveals multiple well-defined nodules with ground-glass opacity. Usually, AAH does not exceed 10 mm in size. AAH with extensive involvement on one side of the lung field or one that is larger than 2 cm has not been previously reported. We herein report a case of a 71-year-old nonsmoking female with lung AAH of larger than 2 cm.
Adenocarcinoma
;
Adenocarcinoma, Bronchiolo-Alveolar
;
Female
;
Humans
;
Hyperplasia
;
Lung
;
Precancerous Conditions
;
Thorax
9.A Hospital-based Tabletop Exercise for Pandemic Influenza Preparedness: Design and Evaluation.
Hee Yun SEOL ; Ji Ryang KIM ; Jung Ha MOK ; Bo Ran KWON ; Sun Hee LEE ; Im Soo KWAK ; Jin Woo JUNG ; Jeong su KIM ; Ock Bae KO ; En Hi CHO ; Seong Sun KIM ; Sang Sook SHIN ; Sang Won LEE
Infection and Chemotherapy 2008;40(2):83-92
BACKGROUND: To evaluate the usefulness and compliance of a hospital-based tabletop exercise in setting of pandemic influenza in hospitals. MATERIALS AND METHODS: Tabletop exercise was held in Pusan National University Hospital and forty two hospital employees were invited to participate in the exercise. The scenario for hospital-based tabletop exercise was designed. It consisted of three modules, which simulated the influx and outbreak of H5N1 influenza that was epidemic in Southeast Asia. Pre-, post-exercise surveys were completed by anonymous questions. RESULTS: Thirty-seven (88%) of 42 invited participants attended exercise. All members of the administration group and the ancillary services group participated. But, only 77% members of the clinical services group participated. In pre-exercise survey, priorities of eight goals regarding skills and knowledge during exercise were inquired., The highest priorities pointed out by the respondents were "Increase the knowledge of pandemic influenza" (22%), "Development of strategies for optimal communication among employees within specific department" (19%) and "Development of strategies for improved coordination between facilities within the health system" (19%). Twenty-one (57%) of participants completed the post-exercise surveys. At post-exercise surveys, 81% of the participants stated that the tabletop exercise was extremely or very useful, 86% of the participants also stated that it increased their knowledge of pandemic influenza. CONCLUSION: Tabletop exercise is an effective modality for increasing pandemic influenza preparedness in hospitals, and this method is useful for guiding preparedness activities within the hospital environment. Further studies to determine the appropriate method of discussion, questionnaire, duration of exercise and injection are needed.
Anonyms and Pseudonyms
;
Asia, Southeastern
;
Compliance
;
Influenza, Human
;
Pandemics
;
Surveys and Questionnaires
10.A Hospital-based Tabletop Exercise for Pandemic Influenza Preparedness: Design and Evaluation.
Hee Yun SEOL ; Ji Ryang KIM ; Jung Ha MOK ; Bo Ran KWON ; Sun Hee LEE ; Im Soo KWAK ; Jin Woo JUNG ; Jeong su KIM ; Ock Bae KO ; En Hi CHO ; Seong Sun KIM ; Sang Sook SHIN ; Sang Won LEE
Infection and Chemotherapy 2008;40(2):83-92
BACKGROUND: To evaluate the usefulness and compliance of a hospital-based tabletop exercise in setting of pandemic influenza in hospitals. MATERIALS AND METHODS: Tabletop exercise was held in Pusan National University Hospital and forty two hospital employees were invited to participate in the exercise. The scenario for hospital-based tabletop exercise was designed. It consisted of three modules, which simulated the influx and outbreak of H5N1 influenza that was epidemic in Southeast Asia. Pre-, post-exercise surveys were completed by anonymous questions. RESULTS: Thirty-seven (88%) of 42 invited participants attended exercise. All members of the administration group and the ancillary services group participated. But, only 77% members of the clinical services group participated. In pre-exercise survey, priorities of eight goals regarding skills and knowledge during exercise were inquired., The highest priorities pointed out by the respondents were "Increase the knowledge of pandemic influenza" (22%), "Development of strategies for optimal communication among employees within specific department" (19%) and "Development of strategies for improved coordination between facilities within the health system" (19%). Twenty-one (57%) of participants completed the post-exercise surveys. At post-exercise surveys, 81% of the participants stated that the tabletop exercise was extremely or very useful, 86% of the participants also stated that it increased their knowledge of pandemic influenza. CONCLUSION: Tabletop exercise is an effective modality for increasing pandemic influenza preparedness in hospitals, and this method is useful for guiding preparedness activities within the hospital environment. Further studies to determine the appropriate method of discussion, questionnaire, duration of exercise and injection are needed.
Anonyms and Pseudonyms
;
Asia, Southeastern
;
Compliance
;
Influenza, Human
;
Pandemics
;
Surveys and Questionnaires

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