1.Research status of conjunctival lymphangiectasia
Fuli WANG ; Xuandi SU ; Yujin WANG ; Jie RAN ; Duosheng XIA
International Eye Science 2025;25(1):59-63
Conjunctival lymphangiectasia is a low-incidence ocular surface disease that is currently rarely reported in the relevant literature. It may be related to cosmetic eyelid surgery, tumor, radiation or chemotherapy and other factors and often causes a foreign body sensation, lacrimation, eye pain, visual fatigue and other discomfort. These symptoms of constant eye irritation affect the patient's quality of life. At present, anterior segment optical coherence tomography can be used for clinical diagnosis, and the novel monoclonal antibody D2-40, as a marker of lymphatic endothelial cell dilatation, has high specificity in pathological diagnosis. Previous studies have not fully defined the pathogenesis of the disease, and treatment methods vary. Conventional treatment has resulted in varying degrees of damage to the conjunctiva in patients. In recent years, anti-vascular endothelial growth factor drugs have been reported to be effective in treating the disease with few complications. This article reviews the pathogenesis, diagnosis and treatment of this rare disease in order to gain a better understanding of conjunctival lymphangiectasia and provide more support for clinical diagnosis and treatment.
2.Mechanism of Huanglian Wendantang on Damp-heat Type Diabetes Enteropathy Rats Based on TGR5/GLP-1 Signaling Pathway and Intestinal Flora
Yujin WANG ; Yulong QIE ; Hua JIANG ; Chen YUAN ; Xirui DENG ; Xuelian MENG ; Wenli WANG ; Yanjin SU
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(15):10-18
ObjectiveTo explore the mechanism of Huanglian Wendantang on damp-heat type diabetes enteropathy rats based on the G protein coupled bile acid receptor 5/glucagon like peptide-1 (TGR5/GLP-1) signaling pathway and intestinal flora. MethodsA total of 72 male Sprague Dawley (SD) rats were adaptively fed for one week. Twelve SD rats were randomly selected as a blank group and fed with an ordinary diet. The rest of the SD rats were fasted for 12 hours without water. A rat model with damp-heat type diabetes enteropathy was made by left intraperitoneal injection of streptozotocin (55 mg·kg-1) and high sugar and high fat diet (20% sucrose solution + high fat diet) in a humid and hot environment (artificial climate box: temperature 30-34 ℃, relative humidity: 85%-95%). After successful modeling, the rats were randomly divided into a model group, a metformin group (200 mg·kg-1), low-dose, medium-dose, and high-dose Huanglian Wendantang groups (7.10, 14.20, 28.39 g·kg-1), with 12 rats in each group. The normal group and the model group were orally administered with physiological saline once a day for 6 consecutive weeks. During the observation period, the weight and blood glucose levels of rats were measured and recorded weekly. After the administration, fresh feces were collected from rats, and 16S rRNA sequencing technology was used to study the differences and changes in intestinal flora among different groups. The levels of tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) in the serum of rats were detected by enzyme-linked immunosorbent assay (ELISA), and the pathological morphological changes of colon tissue were examined. The expression of TGR5 and GLP-1 in colon tissue was detected by immunohistochemistry, and the expression of TGR5 and GLP-1 proteins in colon tissue was measured by Western blot. ResultsCompared with the blank group, the model group showed a decrease in body weight, an increase in blood glucose, and significant damp-heat symptoms. The levels of IL-6 and TNF-α in serum were significantly increased (P<0.01). The expression of TGR5 and GLP-1 was decreased (P<0.01), and the pathogenic bacteria were increased. Compared with the model group, the treatment groups exhibited improvements in body weight, blood glucose levels, and damp-heat syndrome in rats. Among them, the high-dose group of Huanglian Wendantang displayed the most significant improvement effect, with significantly reduced inflammation levels (P<0.01) and elevated expression of TGR5 and GLP-1 (P<0.01). Colonic pathological sections showed that Huanglian Wendantang could effectively ameliorate colonic pathological changes. The 16S rRNA sequencing result indicated a significant increase in beneficial bacteria in the treatment groups. ConclusionHuanglian Wendantang can effectively ameliorate the damp-heat symptoms and blood glucose levels in rats with damp-heat type diabetes enteropathy, and it may exert an effect by regulating the TGR5/GLP-1 signaling pathway and intestinal flora disorder.
3.Effects of l-tetrahydropalmatine on different stages of conditioned place preference in ketamine dependent rats and the mechanism of DA
Yan DU ; Xingcui GAO ; Hongliang SU ; Yujin WANG ; Li DU ; Keming YUN
Chinese Journal of Forensic Medicine 2024;39(1):50-54
Objective To observe the effects of Levo-tetrahydropalmatine(l-THP)on the expression,regression and relapse of conditioned place preference(CPP)in ketamine induced rats,and to detect the content of dopamine(DA)in the striatum(caudate putamen,CPu)of the rat brain at different time points.Methods Ketamine addiction rat model was established by CPP.The effects of l-THP on the expression,regression and relapse of ketamine induced rat CPP were investigated using CPP score as the index.The content of DA in CPu of rats was determined by ultra-performance liquid chromatography coupled to tandem mass spectrometry(UPLC-MS/MS)after ketamine administration and l-THP intervention at 30 min,60 min,90 min,120 min and 150 min.Results It indicated that 1-THP could decrease the expression of CPP in ketamine induced rats,promote the process of CPP resolution and inhibit the process of relapse.In addition,l-THP combined with ketamine administration significantly inhibited the ketamine-induced increase in DA content in the CPu of the rats.Conclusion The mechanism of l-THP inhibiting the reward effect of ketamine may be related to blocking DA receptors and reducing the release of DA neurotransmitters.l-THP has potential implications for the treatment of ketamine addiction.
4.Forensic Considerations in Postmortem Cases of Sudden Death during or after Percutaneous Coronary Intervention: Data from The National Forensic Service in Korea, 2015 to 2021
Sohyung PARK ; Moon-Young KIM ; Byung-Ha CHOI ; Jeong-Uk SEO ; Seong Ho KIM ; Dong Yeong KIM ; Minjung KIM ; Yujin WON ; Junmo KIM ; Seon Jung JANG ; Jin-Haeng HEO ; HyeJeong KIM ; Su Jeong JEON
Korean Journal of Legal Medicine 2023;47(4):136-145
Sudden death during or after percutaneous coronary intervention (PCI) could be led to potential medicolegal disputes. This study aimed to investigate the clinical and postmortem findings in PCI-related deaths-focusing on the current statusto inform preventive strategies against these fatalities. Forty-three cases were retrieved from the National Forensic Service's postmortem records between 2015 and 2021, and the corresponding postmortem findings and clinical information were analyzed. The analyses revealed a relatively consistent annual incidence of PCI-related deaths. Immediate deaths during or shortly after PCI occurred in 17 cases (39.5%), and delayed PCI-related deaths after discharge from the hospital occurred in 26 cases (60.5%). The causes of PCI-related deaths in the postmortem cases were categorized into four groups: PCI complications (11 cases, 26%), acute myocardial infarction (23 cases, 53%), ischemic heart disease (8 cases, 19%), and others (1 case, 2%). Postmortem examinations played a critical role in determining the cause of death and obtaining medical evidence, including pathological findings of the heart as well as those of coronary artery and stent insertion. Our findings suggest that a detailed examination of the heart, coronary arteries, stent status, and atherosclerosis in PCI-related deaths could help provide more accurate information as medical evidence and prevent/resolve potential medicolegal issues. Further, this could advance our understanding of PCI-related deaths and inform future preventive strategies.
5.Changes of Intestinal Microbiota in Type 2 Diabetic Diarrhea Patients with Different Syndromes Based on High-throughput Sequencing
Yujin WANG ; Shuwen DOU ; Yuan ZHOU ; Qingying WANG ; Conge TAN ; Xiangdong WANG ; Wenwen XING ; Ying YAN ; Yanjin SU
Chinese Journal of Experimental Traditional Medical Formulae 2023;29(2):125-132
ObjectiveTo investigate the changes of intestinal microbiota in type 2 diabetic diarrhea (T2DD) patients with dampness-heat syndrome and spleen-kidney deficiency syndrome. MethodT2DD patients who were admitted to the Department of Endocrinology Ⅰ of the Affiliated Hospital of Shaanxi University of Chinese Medicine from March 2020 to May 2021 were selected, including 14 patients with type 2 diabetes mellitus (T2DM), 12 T2DD patients with dampness-heat syndrome, and 13 T2DD patients with spleen-kidney deficiency syndrome. Twelve healthy subjects receiving medical examination were selected as control group. Their body mass index (BMI), fasting plasma glucose (FPG), 2 h postprandial blood glucose (2 h PBG) and glycosylated hemoglobin (HbA1c) were compared. Fecal samples were collected for DNA extraction to build a database. High-throughput 16S rDNA sequencing was used to compare the composition of intestinal microbiota and the differential bacteria among the four groups. ResultCompared with the conditions in control group, the levels of FPG, 2 h PBG and HbA1c in the other groups were increased (P<0.05). Alpha diversity showed no significant difference in species richness, evenness and diversity of intestinal microbiota among the groups. Beta diversity indicated that intestinal microbiota tended to be consistent in each group, and there was no marked difference between groups. The top 5 phylum by relative abundance were Bacteroidetes,Proteobacteria, Firmicutes, Actinobacteria, and Fusobacteria, among which,Bacteroidetes, Proteobacteria and Firmicutes were dominant. Compared with the control group, the three diabetic groups had elevated relative abundance of Bacteroidetes while decreased relative abundance of Firmicutes. The relative abundance of Actinomycetes in spleen-kidney deficiency T2DD group was significantly higher than that in the other groups, and the relative abundance of Firmicutes and Fusobacteria in the dampness-heat T2DD group was significantly lower than that in the other groups. At the genus level, the top 10 bacteria by relative abundance were Phocaeicola, Bacteroides, Pseudescherichia, Prevotella, Bifidobacterium, Faecalibacterium, Fusobacterium, Roseburia, Citrobacter, and Cetobacterium. LEfSe analysis revealed that the relative abundance of Prevotella, Mediterraneibacter, Parabacteroides, and Fusicatenibacter in diabetic patients was remarkably higher than that in healthy patients. Bacteroides and Sutterella might be the characteristic microbiota of T2DD patients with dampness-heat syndrome, while Faecalibacterium, Limosilactobacillus, Eubacterium, Gemmiger, Enterocloster, Alistipes, Parasutterella and Oscillibacter might be the characteristic microbiota of T2DD patients with spleen-kidney deficiency syndrome. ConclusionBacteroides and Parasutterella might be the characteristic microbiota of T2DD patients with dampness-heat syndrome and spleen-kidney deficiency syndrome, respectively. This paper provided reference for studying the mechanism, diagnosis and treatment of modern traditional Chinese medicine for T2DD of dampness-heat type and spleen-kidney deficiency type.
6.The risk factors for implant survival and marginal bone loss: a retrospective long-term study
Eun-Woo LEE ; Ha-Na JUNG ; Yujin JO ; Ok-Su KIM
Journal of Dental Rehabilitation and Applied Science 2022;38(2):97-109
Purpose:
This study aims to investigate the risk indicators contributing to implant failure, and analyze the relationship between riskindicators and marginal bone loss (MBL) through long-term follow-up over 3 years.
Materials and Methods:
From 2003 to 2017, patients’ medical charts with a history of dental implant surgery at Chonnam National University Dental Hospital were reviewed retro-spectively. The patient’s demographic variables, and clinical variables were recorded. Periapical radiographs were used to evaluated the changes in MBL around implants. And we analyzed implant survival rates. Multiple regression analysis with backward elimina-tion was conducted to correlate the patient’s clinical variables and implant failure and Pearson correlation analysis was performed to the correlated between implant long-term survival rates and MBL and initial stability.
Results:
In multiple regression analysis, there was a statistically significant negative correlation between abutment connection type ( β = -.189, P < .05), with or without SPT ( β = -.163, P < .05), diabetes ( β = -.164, P < .05), osteoporosis ( β = -.211, P < .05) and MBL. Anticoagulant medication influenced the long-term success rate of implants. PTV values at the second implant surgery showed a statistically significant negative correlation with long-term implant survival (P < .05).
Conclusion
For the long-term success of the implant, the appropriate abutment connection type must be selected and the periodic SPT is recommended. Systemic diseases such as diabetes and osteoporosis and antico-agulant medication should be considered. Furthermore, since high PTV at the second implant surgery correlated with the long-term survival rates of the implant, initial stability should be carefully considered before undergoing the prosthetic procedure.
7.Usefulness of Near-infrared Spectroscopy for Diagnosis of Traumatic Intracranial Hemorrhage in Postmortem Inspection
Jong Pil PARK ; Tak Su LEE ; Minsung CHOI ; Kyung moo YANG ; Jeongwoo PARK ; Yujin WON ; Seung Gyu CHOI ; Kyunghong LEE ; Jeong Hwan KIM ; Chae Lin KANG ; Seung Woo CHOI
Korean Journal of Legal Medicine 2020;44(1):24-30
Near-infrared spectroscopy is a device used to determine whether traumatic intracranial hemorrhage has occurred and is primarily used for screening in emergency situations. In this study we examined the applicability of this equipment in postmortem inspection. This study included 124 autopsy cases and 59 postmortem inspection cases performed in the National Forensic Service from July 2017 to October 2018. We carried out the test using Infrascanner Model 2000 (Infrascan Inc.). Autopsy cases were divided into four groups (epidural hemorrhage or subdural hemorrhage group, traumatic subarachnoid hemorrhage or cerebral contusion group, nontraumatic intracerebral hemorrhage group, and control group) and analyzed. There was no difference in the test results according to the presence and type of intracranial hemorrhage. The possibility that variables related to postmortem change affected the test results was considered. In conclusion, this study confirmed that near-infrared spectroscopy is not suitable for the detection of traumatic intracranial hemorrhage in postmortem inspection.
8.Organizing an in-class hackathon to correct PDF-to-text conversion errors of Genomics & Informatics 1.0
Sunho KIM ; Royoung KIM ; Ryeo-Gyeong KIM ; Enjin KO ; Han-Su KIM ; Jihye SHIN ; Daeun CHO ; Yurhee JIN ; Soyeon BAE ; Ye Won JO ; San Ah JEONG ; Yena KIM ; Seoyeon AHN ; Bomi JANG ; Jiheyon SEONG ; Yujin LEE ; Si Eun SEO ; Yujin KIM ; Ha-Jeong KIM ; Hyeji KIM ; Hye-Lynn SUNG ; Hyoyoung LHO ; Jaywon KOO ; Jion CHU ; Juwon LIM ; Youngju KIM ; Kyungyeon LEE ; Yuri LIM ; Meongeun KIM ; Seonjeong HWANG ; Shinhye HAN ; Sohyeun BAE ; Sua KIM ; Suhyeon YOO ; Yeonjeong SEO ; Yerim SHIN ; Yonsoo KIM ; You-Jung KO ; Jihee BAEK ; Hyejin HYUN ; Hyemin CHOI ; Ji-Hye OH ; Da-Young KIM ; Hee-Jo NAM ; Hyun-Seok PARK
Genomics & Informatics 2020;18(3):e33-
This paper describes a community effort to improve earlier versions of the full-text corpus of Genomics & Informatics by semi-automatically detecting and correcting PDF-to-text conversion errors and optical character recognition errors during the first hackathon of Genomics & Informatics Annotation Hackathon (GIAH) event. Extracting text from multi-column biomedical documents such as Genomics & Informatics is known to be notoriously difficult. The hackathon was piloted as part of a coding competition of the ELTEC College of Engineering at Ewha Womans University in order to enable researchers and students to create or annotate their own versions of the Genomics & Informatics corpus, to gain and create knowledge about corpus linguistics, and simultaneously to acquire tangible and transferable skills. The proposed projects during the hackathon harness an internal database containing different versions of the corpus and annotations.
9.Organizing an in-class hackathon to correct PDF-to-text conversion errors of Genomics & Informatics 1.0
Sunho KIM ; Royoung KIM ; Ryeo-Gyeong KIM ; Enjin KO ; Han-Su KIM ; Jihye SHIN ; Daeun CHO ; Yurhee JIN ; Soyeon BAE ; Ye Won JO ; San Ah JEONG ; Yena KIM ; Seoyeon AHN ; Bomi JANG ; Jiheyon SEONG ; Yujin LEE ; Si Eun SEO ; Yujin KIM ; Ha-Jeong KIM ; Hyeji KIM ; Hye-Lynn SUNG ; Hyoyoung LHO ; Jaywon KOO ; Jion CHU ; Juwon LIM ; Youngju KIM ; Kyungyeon LEE ; Yuri LIM ; Meongeun KIM ; Seonjeong HWANG ; Shinhye HAN ; Sohyeun BAE ; Sua KIM ; Suhyeon YOO ; Yeonjeong SEO ; Yerim SHIN ; Yonsoo KIM ; You-Jung KO ; Jihee BAEK ; Hyejin HYUN ; Hyemin CHOI ; Ji-Hye OH ; Da-Young KIM ; Hee-Jo NAM ; Hyun-Seok PARK
Genomics & Informatics 2020;18(3):e33-
This paper describes a community effort to improve earlier versions of the full-text corpus of Genomics & Informatics by semi-automatically detecting and correcting PDF-to-text conversion errors and optical character recognition errors during the first hackathon of Genomics & Informatics Annotation Hackathon (GIAH) event. Extracting text from multi-column biomedical documents such as Genomics & Informatics is known to be notoriously difficult. The hackathon was piloted as part of a coding competition of the ELTEC College of Engineering at Ewha Womans University in order to enable researchers and students to create or annotate their own versions of the Genomics & Informatics corpus, to gain and create knowledge about corpus linguistics, and simultaneously to acquire tangible and transferable skills. The proposed projects during the hackathon harness an internal database containing different versions of the corpus and annotations.
10.Usefulness of Near-infrared Spectroscopy for Diagnosis of Traumatic Intracranial Hemorrhage in Postmortem Inspection
Jong Pil PARK ; Tak Su LEE ; Minsung CHOI ; Kyung moo YANG ; Jeongwoo PARK ; Yujin WON ; Seung Gyu CHOI ; Kyunghong LEE ; Jeong Hwan KIM ; Chae Lin KANG ; Seung Woo CHOI
Korean Journal of Legal Medicine 2020;44(1):24-30
Near-infrared spectroscopy is a device used to determine whether traumatic intracranial hemorrhage has occurred and is primarily used for screening in emergency situations. In this study we examined the applicability of this equipment in postmortem inspection. This study included 124 autopsy cases and 59 postmortem inspection cases performed in the National Forensic Service from July 2017 to October 2018. We carried out the test using Infrascanner Model 2000 (Infrascan Inc.). Autopsy cases were divided into four groups (epidural hemorrhage or subdural hemorrhage group, traumatic subarachnoid hemorrhage or cerebral contusion group, nontraumatic intracerebral hemorrhage group, and control group) and analyzed. There was no difference in the test results according to the presence and type of intracranial hemorrhage. The possibility that variables related to postmortem change affected the test results was considered. In conclusion, this study confirmed that near-infrared spectroscopy is not suitable for the detection of traumatic intracranial hemorrhage in postmortem inspection.

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