1.Effects of Peripheral Neuropathy on CTB-labeled Motor Neurons Following Ligation of the Tibial Nerve.
Ji Hyun KIM ; Ji Young NOH ; Eui Hyeog HAN
Korean Journal of Physical Anthropology 2011;24(1):31-39
Changes in CTB labeled motor neurons of the spinal cord were observed after the induction of peripheral neuropathy by ligation of the tibial nerve. Rats were anesthetized and the tibial nerve was ligated with 3-0 silk. The rats were separated into three groups based on the length of time the tibial nerve was ligated (1, 2, or 4 weeks). After the ligation procedures were complete, the tibial nerve stumps were soaked in CTB solution. Tibial nerve segments and the spinal cord were then observed. In the control and experimental groups, CTB-labeled neurons formed a discrete population that was concentrated primarily at the L5 level, while the contributions from L4 and L6 were minor. According to the distributions, CTB-labeled neurons were divided into rostral and caudal groups. A selective decrease of CTB-labeled neurons was observed only in the caudal group, extending from the rostral L5 to one-half of the rostral L6. The total numbers of CTB-labeled motor neurons were 2,160+/-169.3, 1,002+/-245.1, 587.5+/-346.5, and 1,728+/-402.6 in the control group, 1 week group, 2 week group, and 4 week group, respectively. The selective decrease of CTB-labeled neurons in the caudal division was responsible for the decrease in the total number of labeled neurons in all groups. Following peripheral neuropathy caused by ligation of the tibial nerve, CTB-labeled neurons in the spinal cord decreased selectively. These results may provide important neuroanatomical data regarding the effects of peripheral neuropathy by ligation of the tibial nerve.
Animals
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Ligation
;
Motor Neurons
;
Neurons
;
Peripheral Nervous System Diseases
;
Rats
;
Silk
;
Spinal Cord
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Tibial Nerve
2.Localization of Motor Neuronal Cell Bodies Innervating the Digastric Muscle of the Rat Using Cholera Toxin B Subunit (CTB).
Korean Journal of Anatomy 2004;37(3):283-292
We used cholera toxin B subunit (CTB) as a neural tracer to localize motor neuronal cell bodies innervating the digastric muscle. After CTB injection into the left anterior belly, CTB-labelled motor neuronal cell bodies were found in caudal half of the left and right trigeminal nucleus, the left and right facial nucleus, the accessory facial nucleus and the accessory trigeminal nucleus in pons. The total number of CTB-labelled motor neuronal cell bodies were 1,179+/-119.5 in the left pons and 246+/-61.8 in the right pons after CTB injections into the left anterior belly of digastric muscle. After CTB injection into left posterior belly, CTB-labelled motor neuronal cell bodies were found only in the left ventral part of accessory facial nucleus in caudal pons and the total number of CTB-labelled motor neuronal cell bodies were 270+/-29.3.
Animals
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Cholera Toxin*
;
Cholera*
;
Motor Neurons*
;
Pons
;
Rats*
;
Trigeminal Nuclei
3.Effects of Vitamin D and Calcium Intervention on the Improvement of Resistance in Patients with Type 2 Diabetes Mellitus.
Young Mee CHOI ; Jun Ho LEE ; Ji Sook HAN
Korean Diabetes Journal 2009;33(4):324-334
BACKGROUND: Recent reports suggest that the intake of vitamin D and calcium may influence insulin resistance. The aim of this study was to assess the effects of vitamin D and calcium intervention on the improvement of blood glucose and insulin resistance in patients with type 2 diabetes mellitus (DM). METHODS: Fasting blood glucose, glycosylated hemoglobin A1c (HbA1C), serum 25(OH)D3, serum lipid levels, insulin secretion, and activity and dietary surveys were analyzed in type 2 DM patients both before and after a 12-week vitamin D and calcium intake intervention. RESULTS: The serum 25(OH)D3 level was found to be negatively correlated with insulin resistance and fasting blood glucose. Calcium intake level was also negatively correlated with insulin resistance. Fasting blood glucose, HbA1C, and HOMA-IR decreased significantly (P <0.05) following vitamin D and calcium intake intervention in the medical nutrition therapy (MNT) group, while there was no such change observed in the control group. Dietary calcium and vitamin D intakes were significantly (P <0.05) higher in the MNT group than in the control group. The concentrations of serum 25(OH)D3 and insulin secretion increased slightly in the MNT group following the 12-week intervention; however, these results did not reach statistical significance. CONCLUSION: The results of the present study indicate that calcium and vitamin D intervention may be helpful in improving fasting blood glucose, HbA1C, serum 25(OH)D3 and HOMA-IR in patients with type 2 DM who have insufficient serum 25(OH)D3 concentrations.
Blood Glucose
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Calcium
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Calcium, Dietary
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Diabetes Mellitus, Type 2
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Fasting
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Hemoglobin A, Glycosylated
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Humans
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Insulin
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Insulin Resistance
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Nutrition Therapy
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Vitamin D
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Vitamins
4.Investigating Human Liver Tissue-Resident Memory T Cells from the Perspectives of Gastroenterologists and Hepatologists
Gut and Liver 2025;19(2):161-170
Liver tissue-resident memory T (TRM ) cells play a pivotal role in hepatic immune responses. Theirunique residence within liver sinusoids allow continuous antigen surveillance. In this review, wehighlight the role of liver TRM cells in protective immunity and disease pathology. Comparisons between human and murine liver TRM cells reveal species-specific characteristics, suggesting the need for human-focused studies. One key finding is the involvement of liver TRM cells in viral hepatitis, where they can both control infection and contribute to liver damage. Liver TRM cellsalso exhibit dual roles in metabolic-associated steatotic liver disease, promoting inflammation and fibrosis while also contributing to fibrosis resolution. In autoimmune liver diseases, suchas autoimmune hepatitis and primary sclerosing cholangitis, the presence of liver TRM cells correlates with disease severity. In this review, we underscore the importance of liver TRM cells invaccine development, particularly vaccines against malaria. Future research should focus on themechanisms governing TRM -cell formation, maintenance, and function, with the aim of supportingtheir protective roles while mitigating detrimental effects. Advancing our understanding of liverTRM cells will enhance our knowledge of liver immunology and inform novel therapeutic strategiesfor liver disease management.
5.Investigating Human Liver Tissue-Resident Memory T Cells from the Perspectives of Gastroenterologists and Hepatologists
Gut and Liver 2025;19(2):161-170
Liver tissue-resident memory T (TRM ) cells play a pivotal role in hepatic immune responses. Theirunique residence within liver sinusoids allow continuous antigen surveillance. In this review, wehighlight the role of liver TRM cells in protective immunity and disease pathology. Comparisons between human and murine liver TRM cells reveal species-specific characteristics, suggesting the need for human-focused studies. One key finding is the involvement of liver TRM cells in viral hepatitis, where they can both control infection and contribute to liver damage. Liver TRM cellsalso exhibit dual roles in metabolic-associated steatotic liver disease, promoting inflammation and fibrosis while also contributing to fibrosis resolution. In autoimmune liver diseases, suchas autoimmune hepatitis and primary sclerosing cholangitis, the presence of liver TRM cells correlates with disease severity. In this review, we underscore the importance of liver TRM cells invaccine development, particularly vaccines against malaria. Future research should focus on themechanisms governing TRM -cell formation, maintenance, and function, with the aim of supportingtheir protective roles while mitigating detrimental effects. Advancing our understanding of liverTRM cells will enhance our knowledge of liver immunology and inform novel therapeutic strategiesfor liver disease management.
6.Investigating Human Liver Tissue-Resident Memory T Cells from the Perspectives of Gastroenterologists and Hepatologists
Gut and Liver 2025;19(2):161-170
Liver tissue-resident memory T (TRM ) cells play a pivotal role in hepatic immune responses. Theirunique residence within liver sinusoids allow continuous antigen surveillance. In this review, wehighlight the role of liver TRM cells in protective immunity and disease pathology. Comparisons between human and murine liver TRM cells reveal species-specific characteristics, suggesting the need for human-focused studies. One key finding is the involvement of liver TRM cells in viral hepatitis, where they can both control infection and contribute to liver damage. Liver TRM cellsalso exhibit dual roles in metabolic-associated steatotic liver disease, promoting inflammation and fibrosis while also contributing to fibrosis resolution. In autoimmune liver diseases, suchas autoimmune hepatitis and primary sclerosing cholangitis, the presence of liver TRM cells correlates with disease severity. In this review, we underscore the importance of liver TRM cells invaccine development, particularly vaccines against malaria. Future research should focus on themechanisms governing TRM -cell formation, maintenance, and function, with the aim of supportingtheir protective roles while mitigating detrimental effects. Advancing our understanding of liverTRM cells will enhance our knowledge of liver immunology and inform novel therapeutic strategiesfor liver disease management.
7.Investigating Human Liver Tissue-Resident Memory T Cells from the Perspectives of Gastroenterologists and Hepatologists
Gut and Liver 2025;19(2):161-170
Liver tissue-resident memory T (TRM ) cells play a pivotal role in hepatic immune responses. Theirunique residence within liver sinusoids allow continuous antigen surveillance. In this review, wehighlight the role of liver TRM cells in protective immunity and disease pathology. Comparisons between human and murine liver TRM cells reveal species-specific characteristics, suggesting the need for human-focused studies. One key finding is the involvement of liver TRM cells in viral hepatitis, where they can both control infection and contribute to liver damage. Liver TRM cellsalso exhibit dual roles in metabolic-associated steatotic liver disease, promoting inflammation and fibrosis while also contributing to fibrosis resolution. In autoimmune liver diseases, suchas autoimmune hepatitis and primary sclerosing cholangitis, the presence of liver TRM cells correlates with disease severity. In this review, we underscore the importance of liver TRM cells invaccine development, particularly vaccines against malaria. Future research should focus on themechanisms governing TRM -cell formation, maintenance, and function, with the aim of supportingtheir protective roles while mitigating detrimental effects. Advancing our understanding of liverTRM cells will enhance our knowledge of liver immunology and inform novel therapeutic strategiesfor liver disease management.
8.Morphological Changes of the Sensory Neurons in the Peripheral Neuropathy of Rat Tibial Nerve Using WGA-HRP Tracing Method.
Ji Hyun KIM ; Ok Hee CHAI ; Eui Hyeog HAN
Korean Journal of Physical Anthropology 2009;22(1):85-94
Neuropathy is a general term referring to disorders of nerves, and produces when the nerves are damaged. It is characterized by spontaneous pain, allodynia and hyperalgesia. The purpose of present study is to observe the number of WGA-HRP (wheat germ agglutinin-horseradish peroxidase) labelded sensory neurons of DRG (dorsal root ganglia), and distributions according to cell size of sensory neuron in tibial nerve ligation model (NLM). The tibial nerve ligation was performed with 3-0 silk by the application of three tight ligatures at the mid-thigh level. In the neuropathy model of rat tibial nerve ligation, morphological changes of sensory neurons in DRG were observed using WGA-HRP. Rats of NLM showed the neuropathic behaviors. Rats were shown guarding affected limb and limping. Their toes and ankle joint of operated limb were hyperflexed. Under light microscopy, tibial nerve showed degeneration of axons in NLM. In control and NLM, labeled sensory neurons of tibial nerve distributed L4 and L5 DRG. In control group, the labeled sensory neurons were round or oval in shape. They were large and small cells, and mixed pattern. Total number of labeled sensory neurons in NLM decreased significantly from control group. The number of labeled sensory neurons in L4 and L5 DRG decreased significantly from control group. Labeled large and small cells decreased significantly from control group. Present study may serve as the basic information about the changes of DRG sensory neurons in NLM.
Animals
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Ankle Joint
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Axons
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Cell Size
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Diagnosis-Related Groups
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Extremities
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Hyperalgesia
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Ligation
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Light
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Microscopy
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Peripheral Nervous System Diseases
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Rats
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Sensory Receptor Cells
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Silk
;
Tibial Nerve
;
Toes
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Wheat Germ Agglutinin-Horseradish Peroxidase Conjugate
9.Current Status and Availability of Specialized Maternity Non-Standard Room for Delivering Mothers.
Jung Won YOON ; Sang Won HAN ; San Hui LEE ; Yeon Soo JUNG ; Ji Man KIM ; Eui Hyeok KIM
Korean Journal of Perinatology 2014;25(3):159-165
PURPOSE: Demand of specialized maternity ward is increasing as national income level rises. However, the National Health Insurance limits the number of hospital's non-standard room to less than 50% of total hospital beds. Therefore, this research was performed to investigate the utilization rate of non-standard room among the Korean women who recently delivered baby in medical facilities in order to examine the factors affecting their selection. METHODS: One hundred sixty six medical facilities which deliver a minimum of ten cases in 2011 were selected and categorized by type, region, and size. A cross-sectional survey was done in November 2012 by a professional research survey company. Eight hundred and two pregnant women answered the questionnaire through a face-to-face interview. RESULTS: Of the 802 expecting mothers, 690 (86%) occupied non-standard room and 684 (85.2%) preferred non-standard room to the standard room. Satisfaction levels were significantly higher in mothers occupying non-standard room [5.9+/-1.0 vs. 5.4+/-1.2 (0-7 scale), P<0.01] and high-income families used non-standard room more often. Reasons for using non-standard room included adequate convalescence (78%), separate place for breastfeeding (6.1%), and convenience on receiving visitors (5.4%). Preference for non-standard room on next visit was higher in case of delivery compared to other cause of hospitalization (81.8% vs. 44.9%, P<0.001). CONCLUSIONS: Preference and actual use of non-standard room after delivery were significant. In spite of concrete preference, there was certain barrier in use of non-standard room according to the income and types of hospitals. Therefore, changes of policy such as insurance support for room charge may be needed in case of delivery.
Breast Feeding
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Convalescence
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Cross-Sectional Studies
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Female
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Hospitalization
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Humans
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Insurance
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Maternal Health Services
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Mothers*
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National Health Programs
;
Patients' Rooms
;
Postpartum Period
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Pregnant Women
;
Surveys and Questionnaires
;
Maternal Health
10.The Correlations between Donor Endothelial Lenticule Thickness and Visual Prognosis in DSAEK.
Jong Chul HAN ; Ji Hyun BAE ; Tae Young CHUNG ; Eui Sang CHUNG
Journal of the Korean Ophthalmological Society 2013;54(2):210-214
PURPOSE: To determine the correlations between donor endothelial lenticule thickness and visual prognosis in Descemet's stripping automated endothelial keratoplasty (DSAEK). METHODS: The present study included 22 patients (22 eyes), who underwent DSAEK surgery in our clinic due to endothelial decompensation. BCVA (log MAR) was compared at 1 month, 3 months and 6 months postoperatively between the thin lenticule group and thick lenticule group (> or =130 micrometer). RESULTS: The BCVA (log MAR) at 1 month postoperatively was 0.46 +/- 0.22 in the thin lenticule group, and 0.71 +/- 0.26 in the thick lenticule group, and significant statistical correlations between donor lenticule thickness and visual acuity were observed (p = 0.025). However, no significant correlations were observed at 3 months (p = 0.129) and 6 months (p = 0.141) postoperatively. CONCLUSIONS: The thin donor lenticule (<130 micrometer) can result in better visual acuity at 1 month postoperatively than the thick donor lenticule (> or =130 micrometer), however, there is no difference in visual acuity between the 2 groups at 3 and 6 months postoperatively.
Corneal Transplantation
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Humans
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Prognosis
;
Tissue Donors
;
Visual Acuity