• Title/Summary/Keyword: liver cells

Search Result 1,969, Processing Time 0.033 seconds

Characterizing Organelles in Live Stem Cells Using Label-Free Optical Diffraction Tomography

  • Kim, Youngkyu;Kim, Tae-Keun;Shin, Yeonhee;Tak, Eunyoung;Song, Gi-Won;Oh, Yeon-Mok;Kim, Jun Ki;Pack, Chan-Gi
    • Molecules and Cells
    • /
    • v.44 no.11
    • /
    • pp.851-860
    • /
    • 2021
  • Label-free optical diffraction tomography (ODT), an imaging technology that does not require fluorescent labeling or other pre-processing, can overcome the limitations of conventional cell imaging technologies, such as fluorescence and electron microscopy. In this study, we used ODT to characterize the cellular organelles of three different stem cells-namely, human liver derived stem cell, human umbilical cord matrix derived mesenchymal stem cell, and human induced pluripotent stem cell-based on their refractive index and volume of organelles. The physical property of each stem cell was compared with that of fibroblast. Based on our findings, the characteristic physical properties of specific stem cells can be quantitatively distinguished based on their refractive index and volume of cellular organelles. Altogether, the method employed herein could aid in the distinction of living stem cells from normal cells without the use of fluorescence or specific biomarkers.

Effect of Skin Burn on the Skin and Liver (피부화상이 피부 및 간에 미치는 영향)

  • Nam, Chul-Hyun;Seo, Hyun-Gyu;Hwang, Tae-Yeun;Choi, Hyun-Lim;Lee, Dong-Ho
    • Journal of Korean Physical Therapy Science
    • /
    • v.8 no.2
    • /
    • pp.1091-1097
    • /
    • 2001
  • The main experiments was investigated the skin tissue damage changing for the skin bum having influence on the skin and the liver and also observed the radical liver weight, ALT in the serum, the fluctuating of AST for the skin bum causing to the liver damage. Anatomically the edema formation of skin after thermal injury was showed, and skin bum increased liver weight (% of body weight, p<0.05) and the activity of serum aniline aminotrasferase (p<0.05), and also histologically induced wes of epidermal layer, protein degeneration of connective tissue, local hemorrhage and degeneration of glandular epithelium in the skin tissue. Liver tissue showed the evidences of postbum damage, they were sinusoidal dilatation, cell swelling, infiltration of inflammatory cells.

  • PDF

Genomic Profiling of Liver Cancer

  • Lee, Ju-Seog
    • Genomics & Informatics
    • /
    • v.11 no.4
    • /
    • pp.180-185
    • /
    • 2013
  • Development of liver cancers is driven largely by genomic alterations that deregulate signaling pathways, influencing growth and survival of cancer cells. Because of the hundreds or thousands of genomic/epigenomic alterations that have accumulated in the cancer genome, it is very challenging to find and test candidate genes driving tumor development and progression. Systematic studies of the liver cancer genome have become available in recent years. These studies have uncovered new potential driver genes, including those not previously known to be involved in the development of liver cancer. Novel approaches combining multiple datasets from patient tissues have created an unparalleled opportunity to uncover potential new therapeutic targets and prognostic/predictive biomarkers for personalized therapy that can improve clinical outcomes of the patients with liver cancer.

Clinical Case of Liver Cirrhosis, with Herbal Medicine, Acupuncture, and Moxibustion Treatment (간경변 환자의 한방치험례)

  • Shin, Woo-Jin
    • The Journal of Internal Korean Medicine
    • /
    • v.30 no.1
    • /
    • pp.241-248
    • /
    • 2009
  • Object : Liver cirrhosis is a disease of the liver in which normal cells are replaced by scar tissue. The purpose of this case is to report the improvement of liver cirrhosis after herb-med, acupuncture & moxibustion complex therapy. Methods : We provided herb-med, acupuncture & moxibustion complex therapy to a patient who suffered from ascites and fatigue. We examined LFT & Child-Pugh class to evaluate the effectiveness of oriental treatment. Result and Conclusion : We observed that herb-mod. acupuncture & moxibustion complex therapy decreased symptoms of liver cirrhosis and improved general condition of a patient who suffered from ascites and fatigue. In the LFT result, Child-Pugh class was improved.

  • PDF

Effect of Iodine-131 Administration on the Liver of Guinea Pig (방사성 옥소(131I)가 Guinea Pig의 간장에 미치는 영향)

  • Lee, Heung Shik;Lee, Kang Wook
    • Korean Journal of Veterinary Research
    • /
    • v.12 no.1
    • /
    • pp.15-19
    • /
    • 1972
  • This experiment was carried out to investigate the effect on the liver of guinea pig after administration of 4.5mCi per Kg. body wt. with iodine-131. The histological changes in the liver were degeneration of hepatic cells, congestion of sinusoids, dilatation of bile ducts, perivascular infiltration of lymphocytes, and dissociation of hepatic cords. A marked histological changes were produced after treatment for 14 days and the morphological recoveries were observed 28 days after the treatment.

  • PDF

Inhibition of hepatic stellate cell collagen synthesis by an aqueous extract isolated from Platycodon grandiflorum

  • Lee, Kyung-Jin;Jeong, Hye-Gwang
    • Proceedings of the PSK Conference
    • /
    • 2003.04a
    • /
    • pp.176.1-176.1
    • /
    • 2003
  • The protective effects on hepatic fibrosis of an aqueous extract from the roots of Platycodon grandiflorum A. DC (Campanulaceae), Changkil (CK), in hepatic stellate cell line, CFSC-2G. The increased deposition of extracellular matrix by hepatic stellate cells following liver injury in a process known as activation is considered a key mechanism for increased collagen content of liver during the development of liver fibrosis. (omitted)

  • PDF

Effects of rrhGM-CSF on Morphology and Expression of PCNA in Regenerating Rat Liver (재생 중인 흰쥐 간의 형태학적 변화 및 PCNA 발현에 미치는 rrhGM-CSF의 영향)

  • Jeong, Jin-Ju;Heo, Si-Hyun;Kim, Ji-Hyun;Yoon, Kwang-Ho;Lee, Young-Jun;Han, Kyu-Boem;Kim, Wan-Jong
    • Applied Microscopy
    • /
    • v.40 no.2
    • /
    • pp.73-80
    • /
    • 2010
  • Liver regeneration is a result of highly coordinated proliferation of hepatocytes and nonparenchymal liver cells. Partial hepatectomy (PH) is the most often used stimulus to study liver regeneration because, compared with other methods that use hepatic toxins, it is not associated with the tissue injury and inflammation, and the initiation of the regenerative stimulus is precisely defined. Granulocyte macrophage-colony stimulating factor (GM-CSF), which is a cytokine able to regulate the proliferation and differentiation of epithelial cells, was first identified as the most potent mitogen for bone marrow. Particularly, rrhGM-CSF, which is highly glycosylated and sustained longer than any other types of GM-CSF in the blood circulation, was specifically produced from rice cell culture. In this experiment, effects of rrhGM-CSF administration were evaluated in the regenerating liver after 78% PH of rats. Morphological changes induced by PH were characterized by destroyed hepatocyte plate around the central vein and enlarged nuclear cytoplasmic ratio and increased hepatocytes with two nuclei. And then, proliferation of liver cells (parenchymal and nonparenchymal) and rearrangement of plates and lobules seemed to be carried out during liver regeneration. These alterations in the experimental group preceded those of the control. Since proliferating cell nuclear antigen (PCNA) is known to be a nuclear protein maximally elevated in the S phase of proliferating cells, the protein was used as a marker of liver regeneration after PH in rats. PCNA levels by western blot analysis and immunohistology were compared between the two groups. PCNA protein expression of two groups at 12 hr and 24 hr after injury showed similar pattern. The protein expression showed the peak at 3 days in both groups, however, the protein level of the experimental group was higher than that of the control. On immunohistochemical observations, the reaction product of PCNA was localized at the nuclei of proliferating cells and the positive reaction in experimental group at 3 days was clearly stronger than that in control group. The results by Western blotting and immunohistology for PCNA showed similar pattern in terms of the protein levels. In conclusion, rrhGM-CSF administration during liver regeneration after 78% PH accelerated breakdown and restoration of the hepatic plate and expression of PCNA. These results suggest that rrhGM-CSF might play an important role during liver regeneration in rats.

Effect of Ash Tree Leaf Extract on Acetaminophen-Induced Hepatotoxicity in Mice

  • Jeon, Jeong-Ryae;Choi, Joon-Hyuk
    • Food Science and Biotechnology
    • /
    • v.15 no.5
    • /
    • pp.752-755
    • /
    • 2006
  • This study was carried out to investigate the effects of ash tree leaf extract (ALE) on acetaminophen (APAP)-induced hepatotoxicity in mice. Hepatoprotective effects were detected by biochemical analysis of hepatic enzymes and histopathological examination of the liver. BALB/c mice were divided into three groups: 'normal' control mice, APAP-treated control mice, and mice pretreated with ALE and treated with APAP. A single dose of APAP markedly increased levels of plasma aspartate aminotransferase (AST) and alanine aminotransferase (ALT). Light micrographs of liver cells stained with hematoxylin and eosin showed that APAP induced severe centrilobular necrosis, degeneration, and infiltration by inflammatory cells. Moreover, APAP caused the numbers of TUNEL-positive hepatocytes to increase and caused glycogen content to decrease as observed by Periodic acid-Schiff stain. However, pretreatment with ALE for 7 days prior to the administration of APAP significantly decreased plasma levels of AST and ALT. Histological findings demonstrated that ALE pretreatment alleviated APAP-induced liver damage, and induced the regeneration of liver tissue and restoration of glycogen. These results indicate that ash tree leaf extract exerts a protective effect against APAP-hepatotoxicity induced injury.

The Effects of Jehasuogamibang on Antioxidation Activity and Dietary Hyperlipidemia-induced Mice (제하수오가미방(製何首烏加味方)이 고지혈증 및 산화적 손상에 미치는 영향)

  • Youn, Hyeon-Deok;Jo, Hyun-Kyung;Yoo, Ho-Ryong;Seol, In-Chan;Kim, Yoon-Sik
    • The Journal of Internal Korean Medicine
    • /
    • v.35 no.3
    • /
    • pp.244-261
    • /
    • 2014
  • Objectives: This experiments were performed to determine the effects of the Jehasuogamibang (製何首烏加味方: JHGB) on antioxidationactivity and hyperlipidemia induced by a hypercholesterolemic diet in mice. Methods: After treatment with JHGB expert safety in cytotoxicity and toxicity of Human fibroblast cells and liver and kidney, effect on Reactive Oxygen Species, serum total cholesterol, LDL-cholesterol, triglyceride, glucose, HDL-cholesterol, lipid peroxid of liver tissue, significantly increased SOD and catalase. Results: 1. JHGB showed safety in cytotoxicity and toxicity of human fibroblast cells and liver and kidney. 2. JHGB showed significant inhibitory effect on reactive oxygen species. 3. JHGB significantly decreased serum total cholesterol, LDL-cholesterol, triglyceride, and glucose, and significantly increased serum HDL-cholesterol. 4. JHGB significantly decreased lipid peroxide of liver tissue and significantly increased SOD and catalase. Conclusions: These results suggest that Jehasuogamibang is effective in antioxidationactivity and dietary hyperlipidemia-induced mice.

The Effect of Chronic Alcohol Administration to Alteration of Liver, Kidney and Stomach in Mouse (장기 알콜투여가 생쥐의 간 및 신장, 위장조직 손상에 미치는 영향)

  • Kim, Jin-Taek;Kim, Dong-Hoan;Ahn, Sang-Hyun
    • The Journal of Dong Guk Oriental Medicine
    • /
    • v.3
    • /
    • pp.163-169
    • /
    • 1994
  • Alcohol is a major risk factor for several diseases and excessive, long-term alcohol consumption are caues physical alteration-fatty liver, hepatitis, cirrhosis, breaking down, Wernicke-karsakoff's syndrome, weight loss, and poor immunity-in virtually all organ and tissue. This study was observed that liver, kidney, and stomach were altered in mouse by the effect of chronic alcohol administration. The mouse were sacrificed to obtain the tissue after mouse were orally injected with 25 % ethanol $18m{\ell}/kg/day$ for 120days. The tissue were stained by hematoxylin and eosin and then observed by light microscope. The results of this study were as follows : 1. The congestion was appeared in liver after 120days alcohol admistration. 2. The destruction of glomerulus were increased and the parietal cell of Bowman's capsule were swelled such as cuboidal cell after 120days alcohol administration. The congestion was appeared in alcohol administrated group. 3. The mucosa and gastric pit were destructed and the ulceration was appeared in stomach after 120days administration. The parietal cells and chief cells were damaged. Above results were shown that the tissue were damaged by chronic alcohol administration.

  • PDF