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Liao YJ, Liao CH, Chen LR, Yang JR. Dopaminergic neurons derived from porcine induced pluripotent stem cell like cells function in the Lanyu pig model of Parkinson's disease. Anim Biotechnol 2023; 34:1283-1294. [PMID: 35152856 DOI: 10.1080/10495398.2021.2020130] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
The induced pluripotent stem cells (iPSCs) are able to differentiate into dopaminergic neurons and execute the therapeutic effects for Parkinson's disease (PD). Here, we established a animal model of PD in Lanyu pigs by injecting 5 mg/kg of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine hydrochloride (MPTP). Next, the porcine iPSC-like cells (piPSC-like cells) were differentiated into D18 neuronal progenitors (D18 NPs) that were transplanted into the striatum to evaluate their therapeutic effects of PD. We showed that after 8 weeks of cell transplantation, the behavior score was significantly ameliorated and fully recovered at the 14th week of cell transplantation. The number of dopaminergic neurons was also significantly improved at the end of the experiment although the number was still about 50% lower than that in the control group. Our findings suggest that piPSC-like cell-derived D18 NPs exhibit a potential for the treatment of PD in the Lanyu pig model.
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Affiliation(s)
- Yu-Jing Liao
- Division of Physiology, Livestock Research Institute, Council of Agriculture, Tainan, Taiwan
| | - Chia-Hsin Liao
- Department of Medical Research, Buddhist Tzu Chi General Hospital, Hualien, Taiwan
- Holistic Education Center, Tzu Chi University of Science and Technology, Hualien, Taiwan
| | - Lih-Ren Chen
- Division of Physiology, Livestock Research Institute, Council of Agriculture, Tainan, Taiwan
- Department of Biotechnology and Bioindustry Sciences, National Cheng Kung University, Tainan, Taiwan
| | - Jenn-Rong Yang
- Kaohsiung Animal Propagation Station, Livestock Research Institute, Council of Agriculture, Neipu, Pingtung, Taiwan
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2
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Yan L, Yang JR, Wang HQ, Shao ZH. [The expression and correlation analysis of TOX and inhibitory receptors on peripheral blood CD8 +T cells in patients with aplastic anemia]. Zhonghua Yi Xue Za Zhi 2023; 103:2095-2099. [PMID: 37455127 DOI: 10.3760/cma.j.cn112137-20221122-02458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 07/18/2023]
Abstract
Objective: To investigate the expression levels of thymocyte selection related high mobility group proteins (TOX) and different inhibitory receptors in peripheral blood CD8+T cells of patients with aplastic anemia (AA), and to conduct correlation analysis. Methods: From September 2019 to November 2020, 27 AA patients in the Department of Hematology, General Hospital of Tianjin Medical University were retrospectively selected, including 21 males and 6 females, with a median age [M (Q1, Q3)] of 48 (30, 72) years. Thirty-three healthy controls, included 17 males and 16 females, with a median age of 46 (27, 69) years. The expression levels of TOX, programmed cell death receptor-1 (PD-1), T-cell immunoglobulin and mucin domain 3 (TIM-3), cytotoxic T-lymphocyte associated antigen-4 (CTLA-4), T-cell immune receptor with immunoglobulin (Ig) and immunoreceptor tyrosine-based inhibitory motif (ITIM) domain (TIGIT), perforin and granzyme B in peripheral blood CD8+T cells from AA patients and healthy controls were detected by flow cytometry. The correlation between TOX expression levels and different inhibitory receptors was analyzed using Pearson correlation analysis. Results: The expression levels of TOX, PD-1, TIM-3, CTLA-4, TIGIT, perforin, and granzyme B in peripheral blood CD8+T cells of AA patients were 47.33%(41.47%, 56.61%), (30.61±12.37)%, (39.94±10.84)%, (6.21±3.40)%, (51.45±20.21)%, (71.32±22.46)%, and (52.39±23.99)%, respectively, which were higher than those of healthy controls 27.32%(21.64%, 46.96%), (21.29±10.01)%, (21.11±3.00)%, (1.31±0.34)% (30.80±13.40)%, (46.72±22.53)%, (21.75±16.43)% (all P<0.05). The expression level of TOX in CD8+T cells was positively correlated with the expression levels of PD-1, TIM-3, CTLA-4, TIGIT, perforin, and granzyme B (r=0.49, 0.65, 0.70, 0.54, 0.58, 0.48, all P<0.05). Conclusion: The expression levels of TOX and different inhibitory receptors on peripheral blood CD8+T cells in AA patients are higher than those in the healthy control group, and the expression levels of TOX and different inhibitory receptors are positively correlated.
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Affiliation(s)
- L Yan
- Department of Hematology, General Hospital of Tianjin Medical University, Tianjin 300052, China
| | - J R Yang
- Department of Hematology, General Hospital of Tianjin Medical University, Tianjin 300052, China
| | - H Q Wang
- Department of Hematology, General Hospital of Tianjin Medical University, Tianjin 300052, China
| | - Z H Shao
- Department of Hematology, General Hospital of Tianjin Medical University, Tianjin 300052, China
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Dong XF, Zhong JT, Liu TQ, Yang JR. [Relationship of operation manner and postoperative recurrence of hepatocellular carcinoma]. Zhonghua Zhong Liu Za Zhi 2021; 43:635-637. [PMID: 34289554 DOI: 10.3760/cma.j.cn112152-20190614-00382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Hepatocellular carcinoma (HCC) owns the high morbidity and mortality rates. Surgical resection is still the major pathway for the longer survival of HCC patients. Postoperative recurrence and metastasis have become the key impairment of prognosis of HCC patients. The relationship between tumor recurrence and surgical manner underwent by HCC patients is complicated and multiple factors are included. When the liver tumor was pressured during operation, tumor cells could be squeezed into blood flow via the broken vessels, which resulted in tumor metastasis. Besides, ischemia-reperfusion injury induced by Pringle maneuver during the liver blood blockade resulted in the immune destruction of liver and induced tumor recurrence.The destruction of physical barriers consisted of interstitial cells and normal liver cells was also a key factor for tumor recurrence. This paper summarizes the possible relationship between postoperative recurrence and surgical manner in HCC patients to provide the preventive suggestions for the postoperative recurrence of HCC patients.
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Affiliation(s)
- X F Dong
- Department of Hepatobiliary, Pancreas and Spleen Surgery, the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, China
| | - J T Zhong
- Department of Hepatobiliary Surgery, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Science, Jinan 250117, China
| | - T Q Liu
- Department of Hepatobiliary, Pancreas and Spleen Surgery, the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, China
| | - J R Yang
- Department of Hepatobiliary, Pancreas and Spleen Surgery, the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, China
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4
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Dong XF, Zhong JT, Liu TQ, Chen YY, Tang YT, Yang JR. [Angiopoietin-2 regulates vessels encapsulated by tumor clusters positive hepatocellular carcinoma nest-type metastasis via integrin α5β1]. Zhonghua Yi Xue Za Zhi 2021; 101:654-660. [PMID: 33685048 DOI: 10.3760/cma.j.cn112137-20200605-01780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the molecular mechanism of nest metastasis in blood vessels encapsulated by tumor clusters (VETC) positive hepatocellular carcinoma (HCC). Methods: A total of 72 paraffin embedded HCC tissue samples were collected. Immunohistochemistry staining with CD34 (vascular endothelial cell marker protein) was used to observe the morphological manifestations of VETC cancer nests in primary tumors, bile duct cancerous thrombi and portal vein cancerous thrombi, and to study the characteristics of hematogenous metastasis of VETC cancer nests. Bioinformatics was used to predict the key proteins closely related to VETC cancer nest formation. Immunohistochemistry was used to detect the expression of angiogenin-2 (Ang-2), integrin α5, Integrin β1, and cyclooxygenase-2 (COX-2) proteins in HCC. Transwell cell migration assay was used to detect the effect of Ang-2/integrin α5β1 protein on the migration ability of endothelial cells and HCC cells. Western blotting was used to detect the effect of Ang-2/integrin α5β1 protein on the activity of focal adhesion kinase (FAK) protein. Results: Of the collected HCC specimens, 27 cases (27/72) were VETC (+), including 3 cases with biliary duct cancerous thrombus, 5 cases with portal vein cancerous thrombus, and 3 cases with both biliary duct cancerous thrombus and portal vein cancerous thrombus. VETC (+) HCC could metastasize to portal vein, bile duct, and liver in the form of cancer nest, and the nests retain their intact structure. Ang-2, integrin α5 and integrin β1 were overexpressed in tumor cells and endothelial cells of VETC (+) HCC nests, while COX-2 was only overexpressed in tumor cells of VETC (+) HCC nest. Ang-2 could promote the migration of HCC cell [(121±12) vs (186±11), P<0.01] and endothelial cells [(81±7) vs (163±14), P<0.01]. Integrin α5β1 activation antagonist ATN-161 could significantly block the ability of Ang-2 to promote the migration of HCC cells [(185±10) vs (135±9), P<0.05] and endothelial cells [(156±14) vs (103±6), P<0.05]. ATN-161 could significantly block the phosphorylation of FAK in HCC and endothelial cells induced by Ang-2. Conclusions: VETC (+) HCC could metastasize as a whole in a nested form, and possesses a specific regulatory protein. Ang-2/α5β1/FAK might be potential protein targets in the treatment of VETC (+) HCC nest-type metastasis.
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Affiliation(s)
- X F Dong
- Department of Hepatobiliary, Pancreas and Spleen Surgery, the People's Hospital of Guangxi Zhuang Autonomous Region,Nanning 530021,China
| | - J T Zhong
- Department of Hepatobiliary Surgery,Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250117, China
| | - T Q Liu
- Department of Hepatobiliary, Pancreas and Spleen Surgery, the People's Hospital of Guangxi Zhuang Autonomous Region,Nanning 530021,China
| | - Y Y Chen
- Department of Hepatobiliary, Pancreas and Spleen Surgery, the People's Hospital of Guangxi Zhuang Autonomous Region,Nanning 530021,China
| | - Y T Tang
- Department of Hepatobiliary, Pancreas and Spleen Surgery, the People's Hospital of Guangxi Zhuang Autonomous Region,Nanning 530021,China
| | - J R Yang
- Department of Hepatobiliary, Pancreas and Spleen Surgery, the People's Hospital of Guangxi Zhuang Autonomous Region,Nanning 530021,China
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Liao YJ, Tang PC, Chen LR, Yang JR. A protocol for differential staining of cartilages and ossified bones in fetal and adult mouse skeletons using alcian blue and alizarin red S. J Histotechnol 2020; 43:204-209. [PMID: 32909916 DOI: 10.1080/01478885.2020.1756081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The technique for clearing and staining whole specimens consists of many steps. This study discusses the alcian blue/alizarin red S staining method and aims to provide a useful reference and review for users who intend to do this staining. To specifically address the influences of tissue removal on staining results, the mouse fetuses at embryonic stage E18.5 and adult mice at 12 weeks of age were used in this study. The fetuses were divided into three groups: Group 1 skin, muscle, and viscera removed, Group 2 skin and muscle removed, and Group 3 viscera removed. For successful skeletal staining, it was concluded that (1) skin removal from fetuses was necessary for alcian blue staining but unnecessary for alizarin red S staining, (2) removal of muscle surrounding thorax and neck of fetuses could improve transparency effects, (3) retaining fetal viscera would not significantly affect transparency but might avoid the tissue damage, and (4) complete skin, muscle, and viscera removal were essential for good staining of adult mice. The representative images and detailed staining procedures might be good for researchers presently using alcian blue and alizarin red S staining to differentiate cartilages and ossified bones.
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Affiliation(s)
- Yu-Jing Liao
- Division of Physiology, Livestock Research Institute, Council of Agriculture, Executive Yuan , Tainan, Taiwan.,Department of Animal Science, National Chung Hsing University , Taichung, Taiwan
| | - Pin-Chi Tang
- Department of Animal Science, National Chung Hsing University , Taichung, Taiwan.,The iEGG and Animal Biotechnology Center, National Chung Hsing University , Taichung, Taiwan.,Center for the Integrative and Evolutionary Galliformes Genomics, National Chung Hsing University , Taichung, Taiwan
| | - Lih-Ren Chen
- Division of Physiology, Livestock Research Institute, Council of Agriculture, Executive Yuan , Tainan, Taiwan.,Department of Biotechnology and Bioindustry Sciences, National Cheng Kung University , Tainan, Taiwan
| | - Jenn-Rong Yang
- Division of Physiology, Livestock Research Institute, Council of Agriculture, Executive Yuan , Tainan, Taiwan
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Dong XF, Zhong JT, Chen YY, Liu TQ, Yang JR. [Research progress in the Hepatobiliary Surgery operation of hepatic hilar plate system]. Zhonghua Wai Ke Za Zhi 2020; 58:555-557. [PMID: 32610427 DOI: 10.3760/cma.j.cn112139-20191010-00503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
An estimate of about 50% of new liver cancer cases worldwide occur in China every year.Surgical resection is still the major treatment choice for longer survival of patients with hepatocellular carcinoma. Blocking hepatic blood flow and reducing intraoperative bleeding ensure the success of the operation. Anatomic separation of hepatic hilar region is the precondition of hepatic inflow occlusion. The hepatic hilar plate system involves a thick layer of connective tissue covering the hepatic inflow ducts of hepatic hilar region. The descending part of hilar plate assists in reducing the anatomical difficulty of the hepatic hilar region. The "forth porta hepatis" that is hidden in the hepatic hilar plate system involves the accumulation area of "short hepatic portal veins" .The communicating branch vessels between the hepatic inflow vessels form the anatomical basis in reducing the indocyanine green fluorescence stain effect.The relatively fixed position of the hepatic portal plate is considered as a positioning marker for accurate liver resection. The intrahepatic Glisson sheath is connected with thick connective tissue of the hepatic portal panel system, and is regarded as the physical barrier in limiting the proliferation and hypertrophy of hepatocytes and continuation of hepatic portal panel system in the liver.This paper summarizes the anatomy and application of hepatic hilar plate system during hepatobiliary surgery.
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Affiliation(s)
- X F Dong
- Department of Hepatobiliary and Pancreatic Surgery Breast and Thyroid Surgery, the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, China
| | - J T Zhong
- Department of Hepatobiliary Surgery, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250117, China
| | - Y Y Chen
- Department of Hepatobiliary and Pancreatic Surgery Breast and Thyroid Surgery, the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, China
| | - T Q Liu
- Department of Hepatobiliary and Pancreatic Surgery Breast and Thyroid Surgery, the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, China
| | - J R Yang
- Department of Hepatobiliary and Pancreatic Surgery Breast and Thyroid Surgery, the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, China
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Abstract
This paper summarizes the changes in the policy associated with schistosmiasis control in the new era, analyzes the background of Health China Strategy and its association with the current schistosomiasis control program in China, describes several schistosomiasis control models and proposes some suggestions responding to the challenges in current schistosomiasis control program of China, so as to provide insights into the development of the effective control strategy for schistosomiasis.
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Affiliation(s)
- J R Yang
- Medical School of Wuhan University of Science and Technology, Wuhan 430065, China
| | - M X Xu
- Wuhan Center for Disease Control and Prevention, Hubei Province, China
| | - X D Tan
- Wuhan University School of Health Sciences, China
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Affiliation(s)
- J R Yang
- Department of Hematology, General Hospital, Tianjin Medical University, Tianjin 300052, China
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9
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Liao YJ, Tang PC, Lin CH, Chen LR, Yang JR. Porcine-induced pluripotent stem cell-derived osteoblast-like cells ameliorate trabecular bone mass of osteoporotic rats. Regen Med 2018; 13:659-671. [PMID: 30256173 DOI: 10.2217/rme-2018-0014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
AIM We created rat models of osteoporosis and verified a novel idea to recover bone mass via local cell transplantation. MATERIALS & METHODS The rats were treated with ovariectomy, 0.1% calcium diet or 3 mg/kg body weight/day of prednisolone and porcine-induced pluripotent stem cell (piPSC)-derived osteoblast-like cells were transplanted into the medullary cavity of the left femurs. RESULTS The piPSC-derived osteoblast-like cells exerted therapeutic potential on prednisolone treatment group, which confirmed by improvements in trabecular bone volume (15.93 ± 2.20%), bone surface/volume ratio (27.82 ± 1.40 1/mm), thickness (1.40 ± 0.01 mm), separation (0.99 ± 0.10 mm), number (1.13 ± 0.13 1/mm) and total porosity (84.06 ± 2.20%). CONCLUSION These results first uncovered therapeutic potential of xenotransplantation with piPSCs for glucocorticoid-induced osteoporosis treatment in the rat models.
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Affiliation(s)
- Yu-Jing Liao
- Division of Physiology, Livestock Research Institute, Council of Agriculture, Executive Yuan, Tainan 71246, Taiwan.,Department of Animal Science, National Chung Hsing University, Taichung 40227, Taiwan
| | - Pin-Chi Tang
- The iEGG & Animal Biotechnology Center, National Chung Hsing University, Taichung 40227, Taiwan.,Center for the Integrative & Evolutionary Galliformes Genomics, National Chung Hsing University, Taichung 40227, Taiwan
| | - Chih-Hsun Lin
- Division of Plastic Surgery, Department of Surgery, Taipei Veterans General Hospital, Taipei 11217, Taiwan.,Department of Surgery, School of Medicine, National Yang-Ming University, Taipei 11221, Taiwan
| | - Lih-Ren Chen
- Division of Physiology, Livestock Research Institute, Council of Agriculture, Executive Yuan, Tainan 71246, Taiwan.,Department of Biotechnology and Bioindustry Sciences, National Cheng Kung University, Tainan 70101, Taiwan
| | - Jenn-Rong Yang
- Division of Physiology, Livestock Research Institute, Council of Agriculture, Executive Yuan, Tainan 71246, Taiwan
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Liao YJ, Tang PC, Chen YH, Chu FH, Kang TC, Chen LR, Yang JR. Porcine induced pluripotent stem cell-derived osteoblast-like cells prevent glucocorticoid-induced bone loss in Lanyu pigs. PLoS One 2018; 13:e0202155. [PMID: 30157199 PMCID: PMC6114725 DOI: 10.1371/journal.pone.0202155] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Accepted: 07/27/2018] [Indexed: 11/19/2022] Open
Abstract
The application of appropriate animal models and techniques for the study of osteoporosis is important. Lanyu pigs, a local miniature breed, have been widely used in various biomedical studies in Taiwan. This study aimed to induce bone loss in Lanyu pigs and to examine whether porcine induced pluripotent stem cell (piPSC)-derived osteoblast-like cells could recover bone mass of tibiae via local cell transplantation. piPSCs were directed to differentiate into osteoblast-like cells using osteogenic medium, and differentiated cells expressed osteogenic markers and phenotypes. Twenty mature female Lanyu pigs were divided into four groups, including control (C, 1% calcium diet), treatment 1 (T1, ovariectomy + 1% calcium diet), treatment 2 (T2, ovariectomy + 0.5% calcium diet), and treatment 3 (T3, ovariectomy + 0.5% calcium diet + 1 mg/kg of prednisolone) and were subjected to bone loss induction for twelve months. Micro-CT images revealed that the lowest trabecular bone parameters, such as trabecular bone volume, thickness, separation, number, and total porosity, were detected in the T3 group. The lowest proportions of cortical bone in the proximal metaphysis, proximal diaphysis, and distal diaphysis were also found in the T3 group. These results indicate that ovariectomy, calcium restriction, and prednisolone administration can be applied to induce proper bone loss in Lanyu pigs. After bone loss induction, pigs were subjected to cell transplantation in the left tibiae and were maintained for another six months. Results showed that transplanted piPSC-derived osteoblast-like cells significantly improved trabecular bone structures at transplanted sites and maintained cortical bone structures in the proximal metaphysis. In conclusion, the therapeutic potential of piPSC-derived osteoblast-like cells was confirmed via cell transplantation in the left tibiae of Lanyu pigs. These findings reveal the therapeutic potential of piPSCs for glucocorticoid-induced bone loss in pig models.
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Affiliation(s)
- Yu-Jing Liao
- Division of Physiology, Livestock Research Institute, Council of Agriculture, Executive Yuan, Tainan, Taiwan
- Department of Animal Science, National Chung Hsing University, Taichung, Taiwan
| | - Pin-Chi Tang
- Department of Animal Science, National Chung Hsing University, Taichung, Taiwan
- The iEGG and Animal Biotechnology Center, National Chung Hsing University, Taichung, Taiwan
- Center for the Integrative and Evolutionary Galliformes Genomics, National Chung Hsing University, Taichung, Taiwan
| | - Yu-Hsin Chen
- Division of Physiology, Livestock Research Institute, Council of Agriculture, Executive Yuan, Tainan, Taiwan
- Department of Animal Science, National Chiayi University, Chiayi, Taiwan
| | - Feng-Hsiang Chu
- Division of Physiology, Livestock Research Institute, Council of Agriculture, Executive Yuan, Tainan, Taiwan
| | - Ting-Chieh Kang
- Hengchun Branch, Livestock Research Institute, Council of Agriculture, Executive Yuan, Tainan, Taiwan
- Graduate Institute of Bioresources, National Pingtung University of Science and Technology, Pingtung, Taiwan
| | - Lih-Ren Chen
- Division of Physiology, Livestock Research Institute, Council of Agriculture, Executive Yuan, Tainan, Taiwan
- Department of Biotechnology and Bioindustry Sciences, National Cheng Kung University, Tainan, Taiwan
| | - Jenn-Rong Yang
- Division of Physiology, Livestock Research Institute, Council of Agriculture, Executive Yuan, Tainan, Taiwan
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Liao YJ, Chen YS, Lee JX, Chen LR, Yang JR. Effects of Klf4 and c-Myc Knockdown on Pluripotency Maintenance in Porcine Induced Pluripotent Stem Cell. Cell J 2017; 19:640-646. [PMID: 29105400 PMCID: PMC5672104 DOI: 10.22074/cellj.2018.4428] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Accepted: 11/19/2016] [Indexed: 11/24/2022]
Abstract
Objective The importance of Oct4 and Sox2 in maintaining pluripotency and self-renewal is well-understood, but the
functions of Klf4 and c-Myc has not been fully investigated. In the present study, we attempted to determine the roles
of Klf4 and c-Myc on pluripotency maintenance of porcine induced pluripotent stem (piPS) cells.
Materials and Methods In this experimental study, we performed short hairpin RNA (shRNA) to knock down the
Klf4 and c-Myc functions of piPS cells and examined pluripotency markers and teratoma formation to evaluate piPS
cell pluripotency. The shRNA-Klf4 and shRNA-c-Myc vectors containing a reporter gene, TagFP635, were transfected
into piPS cells by lentivirus infection. The piPS cells fully expressing infrared fluorescence were selected to confirm
gene knockdown of Klf4 and c-Myc reverse transcription-polymerase chain reaction (RT-PCR). Next, for pluripotency
evaluation, expression of pluripotency markers was detected by immunocytochemical staining, and capability of teratoma
formation was investigated by piPS cell transplantation into nonobese diabetic-severe combined immunodeficiency
(NOD-SCID) mice.
Results Our findings indicated that Klf4 and c-Myc functions of piPS cells were knocked down by shRNA transfection,
and knockdown of Klf4 and c-Myc functions impaired expression of pluripotency markers such as Oct4, AP, SSEA-3,
SSEA-4, TRA-1-6, and TRA-1-81. Furthermore, piPS cells without Klf4 and c-Myc expression failed to form teratomas.
Conclusion The pluripotency of piPS cells are crucially dependent upon Klf4 and c-Myc expression. These findings,
suggesting potential mechanisms of Klf4 and c-Myc contribution to piPS cell formation, have important implications for
application, regulation, and tumorigenesis of piPS cells.
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Affiliation(s)
- Yu-Jing Liao
- Division of Physiology, Livestock Research Institute, Council of Agriculture, Executive Yuan, Tainan, Taiwan.,Department of Animal Science, National Chung Hsing University, Taichung, Taiwan
| | - Yi-Shiou Chen
- Division of Physiology, Livestock Research Institute, Council of Agriculture, Executive Yuan, Tainan, Taiwan
| | - Ja-Xin Lee
- Hsinchu Branch, Livestock Research Institute, Council of Agriculture, Executive Yuan, Hsinchu, Taiwan
| | - Lih-Ren Chen
- Division of Physiology, Livestock Research Institute, Council of Agriculture, Executive Yuan, Tainan, Taiwan.,Institute of Biotechnology, National Cheng Kung University, Tainan, Taiwan.,Institute of Biotechnology, Southern Taiwan University, Tainan, Taiwan
| | - Jenn-Rong Yang
- Division of Physiology, Livestock Research Institute, Council of Agriculture, Executive Yuan, Tainan, Taiwan.
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Lin Y, Wang ZN, Ma CC, Liu CK, Yang JR, Shen ZW, Wu RH. [Proton nuclear magnetic resonance spectroscopy recognition of metabolic patterns in fecal extracts for early diagnosis of colorectal cancer]. Zhonghua Yu Fang Yi Xue Za Zhi 2017; 50:788-793. [PMID: 27655598 DOI: 10.3760/cma.j.issn.0253-9624.2016.09.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Objective: To characterize the metabolic " fingerprint" of fecal extracts for diagnosis of early-stage colorectal cancer(CRC)using proton nuclear magnetic resonance spectroscopy(1H-NMR)-based metabolomics coupled with pattern recognition. Methods: From January 2014 to December 2014, we collected fecal samples at the Second Affiliated Hospital of Shantou University Medical College, from 25 patients with colorectal adenomas(CR-Ad), 20 with stage Ⅰ/Ⅱ CRC, and 32 healthy controls(HCs). The patients were diagnosed by histopathology. No subjects had any complicating diseases. HCs showed no abnormalities from blood tests, endoscopic examination, diagnostic imaging, and/or medical interviews. We excluded participants who used antibiotics, NSAIDS, statins, or probiotics within two months of study participation, and any patients who underwent chemotherapy or radiation treatments prior to surgery. We used orthogonal partial least-squares-discriminant analysis(OPLS-DA)for pattern recognition(dimension reduction)on 1H-NMR processed data(1H frequency of 400.13 MHz), to find metabolic differences among CR-Ad, carcinoma and HC fecal samples; and receiver operating characteristic(ROC)analysis to determine the diagnostic value of the fecal metabolic biomarkers. Results: Fecal samples were collected from 20 patients with Stage Ⅰ/Ⅱ CRC(11 M, 9 F, median age(52±13)years), 25 with CR-Ad(14 M, 11 F, median age(53 ± 11)years)and 32 HCs(15 M, 17 F, median age(53 ± 14)years). OPLS-DA clearly distinguished CR-Ad and stage Ⅰ/Ⅱ CRC from HC samples, based on their metabolomic profiles. Relative signal intensities in HCs were significantly lower than in the cancer patients for butyrate(HC: 23.0±6.0; CR-Ad: 18.0±5.0; CRC: 14.0±6.0; Z=-2.07, P=0.008), acetate(HC: 45.0±11.0; CR-Ad: 31.0±11.0; CRC: 24.0±8.0; Z=- 2.32, P=0.011), propionate(HC: 26.0 ± 7.0; CR-Ad: 22.0 ± 6.0; CRC: 19.0 ± 5.0; Z=- 2.43, P=0.032), glucose(HC: 37.0±7.0; CR-Ad: 31.0±7.0; CRC: 26.0±8.0; Z=-2.07, P=0.044)and glutamine(HC: 4.5±2.0; CR-Ad: 4.9 ± 1.0; CRC: 5.4 ± 1.0; Z=2.21, P=0.044). However, relative signal intensities in HCs were significantly higher than in patients for lactate(HC: 4.8±1.0; CR-Ad: 6.9±2.0; CRC: 4.8± 1.0; Z=2.02, P= 0.038), glutamate(HC: 3.2 ± 2.0; CR-Ad: 4.9 ± 1.0; CRC: 3.2 ± 2.0; Z=2.21, P=0.044)and succinate(HC: 12.0±2.0; CR-Ad: 15.0±3.0; CRC: 12.0± 2.0; Z=2.25, P=0.011). Among the potential biomarkers, acetate at 1.92 ppm, and succinate at 2.41 ppm displayed relatively high area under ROC, with sensitivity and specificity both >90%, to distinguish early-stage CRC patients from HCs. Conclusion: Fecal metabolic profiles distinguish of HCs from patients with CRC patients, even in the early stages(stage Ⅰ/Ⅱ), highlighting the potential of NMR-based fecal metabolomic fingerprinting as tools for early CRC diagnosis.
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Affiliation(s)
- Y Lin
- Department of Medical Imaging, the Second Affiliated Hospital, Shantou University Medical College, Shantou 515041, China
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Shiue YL, Yang JR, Liao YJ, Kuo TY, Liao CH, Kang CH, Tai C, Anderson GB, Chen LR. Derivation of porcine pluripotent stem cells for biomedical research. Theriogenology 2016; 86:176-81. [DOI: 10.1016/j.theriogenology.2016.04.030] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Revised: 12/15/2015] [Accepted: 03/14/2016] [Indexed: 01/25/2023]
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14
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Abstract
OBJECTIVES In recent years, Chinese hospital settings are under violent threats. The exact status of quality of life of Chinese doctors under these disastrous situations remains obscure. The aim of this study was to assess the quality of life of Chinese urologists and analyse its potential affecting factors. DESIGN Cross-sectional survey. SETTING Beijing, China. PARTICIPANTS Overall, 1000 participants from more than 30 areas of China, who participated in the 20th National Urology Conference in Beijing in 2013, were surveyed. The brief version of the World Health Organization Quality of Life (WHOQOL-BREF) Chinese version was used to assess the quality of life among these urologists. The relationship between quality of life and the affecting factors was analysed. RESULTS Of the 1000 questionnaires, 856 were completed and returned, and 708 questionnaires were valid for analysis. Approximately 46% of the respondents came from provincial capitals, 54.2% of them felt stress from medical environment, while 76.0% felt stress from research work, and 85.3% from promotion. Cronbach's α coefficient of the instrument was 0.825, Kaiser-Meyer-Olkin measure was 0.841, and P value of Bartlett's sphericity was <0.001. The results of binary logistic regression indicated gender, work years, and medical environment as potential affecting factors of quality of life only influenced one domain. In contrast, research work and promotion influenced three domains of the WHOQOL-BREF. CONCLUSIONS The study indicated that the WHOQOL-BREF may be a reliable and valid tool to assess quality of life of Chinese urologists. In China it is true that the deteriorative medical environment negatively affects medical practice according to previous studies, and policies are recommended to improve the situation. Nevertheless, we should not be too pessimistic about it, as in today's context research work and promotion may be the most extensive and significant affecting factors on doctors' quality of life.
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Affiliation(s)
- Y B Wei
- Department of Urology, The Second Xiangya Hospital, Central South University, Changsha 410011, China.,Department of Urology, Fujian Provincial Hospital, The Teaching Hospital of Fujian Medical University, Fuzhou 350001, China
| | - Z Yin
- Department of Urology, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Y L Gao
- Department of Urology, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - B Yan
- Department of Urology, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Z Wang
- Department of Urology, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - J R Yang
- Department of Urology, The Second Xiangya Hospital, Central South University, Changsha 410011, China
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Yin Z, Wei YB, Liang BL, Zhou KQ, Gao YL, Yan B, Wang Z, Yang JR. Initial experiences with laparoscopy and flexible ureteroscopy combination pyeloplasty in management of ectopic pelvic kidney with stone and ureter-pelvic junction obstruction. Urolithiasis 2015; 43:255-60. [PMID: 25666341 DOI: 10.1007/s00240-015-0753-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Accepted: 01/07/2015] [Indexed: 10/24/2022]
Abstract
To demonstrate the safety and efficacy of combine laparoscopy and flexible ureteroscopy to treat ectopic pelvic kidneys with ureteropelvic junction obstruction (UPJO) and stones. 16 patients of ectopic pelvic kidneys with ureteropelvic junction obstruction and stones were treated with laparoscopy and flexible ureteroscopy (FURS). The operative time, required dose of tramadol, visual analog pain scale (VAPS), postoperative day, stone-free rates (SFRs), perioperative complications, and serum creatinine were evaluated. The SFRs were evaluated with noncontrasted renal computed tomography (CT). Intravenous pyelography (IVP) and CT scan were used to evaluate the UPJO. Stone-free status was defined as absence of stone fragments in kidney or the size of that is less than 3 mm. Operation time from 118 to 225 min, average time (171 ± 28) min; lithotomy time from 16 to 45 min, average time (32 ± 6) min. Average tramadol required at the first day postoperation was (118 ± 49.6) mg; at the second day was (78 ± 24.8) mg. VAPS score at 24 h (5.0 ± 0.7), VAPS score at 48 h (2.5 ± 0.8). Postoperative day (3.9 ± 0.6) days. Stone-free rate was 100%. Average serum creatinine was (88.7 ± 24.3) mol/L before surgery and (92.8 ± 21.6) mol/L after surgery. No major complication. No stone and obstruction recurrence in the follow-up of average 29.3 months. Combined FUR and LC is a good option for patient of ectopic pelvic kidney with renal stone and UPJO. From our initial experience, the SFRs and the effect of pyeloplasty are satisfactory and without major complication, the operative time is acceptable.
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Affiliation(s)
- Zhuo Yin
- Department of Urology, Second Xiangya Hospital of Central South University, 139 Renmin Road, Changsha, Hunan, China,
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16
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Yin Z, Yang JR, Wei YS, Liang BL, Wei YB, Zhou KQ, Wang Z, Yan B, Gao YL. Ischemia-reperfusion injury in an aortic dissection patient. Am J Emerg Med 2014; 33:987.e5-6. [PMID: 25667158 DOI: 10.1016/j.ajem.2014.12.045] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Revised: 12/18/2014] [Accepted: 12/21/2014] [Indexed: 10/24/2022] Open
Abstract
Aortic dissection is a life-threatening emergency. Well-established risk factors include systemic hypertension, hereditary connective tissue diseases (Marfan syndrome and Ehlers-Danlos syndrome), coarctation of the aorta, bicuspid aortic valve, aortitis, and arch hypoplasia. Ischemia of the viscera, the kidneys, the spinal cord, or the lower extremities due to malperfusion constitutes life-threatening complications that have to be considered in the treatment strategy.We report a rare case of symptomatic ischemia of the lower extremities due to aortic dissection. This case demonstrates that the treating physician needs to be vigilant for ischemia reperfusion injuries such as osteofascial compartment syndrome and acute renal failure in aortic dissection.
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Affiliation(s)
- Zhuo Yin
- Second Xiangya Hospital of Central South University, Changsha, Hunan, China.
| | - J R Yang
- Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Y S Wei
- Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - B L Liang
- Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Y B Wei
- Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - K Q Zhou
- Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Z Wang
- Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - B Yan
- Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Y L Gao
- Second Xiangya Hospital of Central South University, Changsha, Hunan, China
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Liao YJ, Yang JR, Chen SE, Wu SJ, Huang SY, Lin JJ, Chen LR, Tang PC. Inhibition of fumonisin B1 cytotoxicity by nanosilicate platelets during mouse embryo development. PLoS One 2014; 9:e112290. [PMID: 25383881 PMCID: PMC4226500 DOI: 10.1371/journal.pone.0112290] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2014] [Accepted: 10/09/2014] [Indexed: 11/29/2022] Open
Abstract
Nanosilicate platelets (NSP), the form of natural silicate clay that was exfoliated from montmorillonite (MMT), is widely used as a feed additive for its high non-specific binding capacity with mycotoxins such as fumonisin B1 (FB1), and has been evaluated its safety for biomedical use including cytotoxicity, genotoxicity, and lethal dosage (LD). In the study, we further examined its toxicity on the development of CD1 mouse embryos and its capacity to prevent teratogenesis-induced by FB1. In vitro cultures, NSP did not disturb the development and the quality of intact pre-implantation mouse embryos. Further, newborn mice from females consumed with NSP showed no abnormalities. NSP had an unexpected high adsorption capacity in vitro. In contrast to female mice consumed with FB1 only, a very low residual level of FB1 in the circulation, reduced incidence of neutral tube defects and significantly increased fetal weight were observed in the females consumed with FB1 and NSP, suggesting a high alleviation effect of NSP on FB1in vivo. Furthermore, FB1 treatment disturbed the gene expression of sphingolipid metabolism enzymes (longevity assurance homolog 5, LASS 5; sphingosine kinase 1, Sphk1; sphingosine kinase 2, Sphk2; sphingosine 1- phosphate lyase, Sgpl1; sphingosine 1-phosphate phosphatase, Sgpp1) in the maternal liver, uterus, fetus, and placenta, but NSP administration reversed the perturbations. Based on these findings, we conclude that NSP is a feasible and effective agent for supplementary use in reducing the toxicity of FB1 to animals.
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Affiliation(s)
- Yu-Jing Liao
- Division of Physiology, Livestock Research Institute, Council of Agriculture Executive Yuan, Tainan, Taiwan
- Department of Animal Science, National Chung Hsing University, Taichung, Taiwan
| | - Jenn-Rong Yang
- Division of Physiology, Livestock Research Institute, Council of Agriculture Executive Yuan, Tainan, Taiwan
| | - Shuen-Ei Chen
- Department of Animal Science, National Chung Hsing University, Taichung, Taiwan
- Agricultural Biotechnology Center, National Chung Hsing University, Taichung, Taiwan
- Center for the Integrative and Evolutionary Galliformes Genomics, National Chung Hsing University, Taichung, Taiwan
| | - Sing-Jhou Wu
- Department of Animal Science, National Chung Hsing University, Taichung, Taiwan
| | - San-Yuan Huang
- Department of Animal Science, National Chung Hsing University, Taichung, Taiwan
- Agricultural Biotechnology Center, National Chung Hsing University, Taichung, Taiwan
- Center for the Integrative and Evolutionary Galliformes Genomics, National Chung Hsing University, Taichung, Taiwan
- Center of Nanoscience and Nanotechnology, National Chung Hsing University, Taichung, Taiwan
| | - Jiang-Jen Lin
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei, Taiwan
| | - Lih-Ren Chen
- Division of Physiology, Livestock Research Institute, Council of Agriculture Executive Yuan, Tainan, Taiwan
| | - Pin-Chi Tang
- Department of Animal Science, National Chung Hsing University, Taichung, Taiwan
- Agricultural Biotechnology Center, National Chung Hsing University, Taichung, Taiwan
- Center for the Integrative and Evolutionary Galliformes Genomics, National Chung Hsing University, Taichung, Taiwan
- * E-mail:
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Yin Z, Yang JR, Wei YB, Zhou KQ, Yan B. A new subtype of crossed fused ectopia of the kidneys. Urology 2014; 84:e27. [PMID: 25440991 DOI: 10.1016/j.urology.2014.08.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Revised: 08/11/2014] [Accepted: 08/18/2014] [Indexed: 10/24/2022]
Abstract
Crossed fused renal ectopia is a rare congenital anomaly; here, we report a new subtype of crossed fused renal ectopia associated with the retroiliac megaureter and thoracic scoliosis deformity. It is beyond the traditional classification of crossed fused renal ectopia. There are 2 kidneys in the left and hydronephrosis of the upper kidney, the right kidney crossed over and fused with the lower kidney of the left. It is never seen in previous reports. Recurrent infection was cured by resecting the hydronephrosis of the upper kidney and retroiliac megaureter.
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Affiliation(s)
- Zhuo Yin
- Department of Urology, Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - J R Yang
- Department of Urology, Second Xiangya Hospital of Central South University, Changsha, Hunan, China.
| | - Y B Wei
- Department of Urology, Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - K Q Zhou
- Department of Urology, Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - B Yan
- Department of Urology, Second Xiangya Hospital of Central South University, Changsha, Hunan, China
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19
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Guo Q, Nan XX, Yang JR, Yi L, Liang BL, Wei YB, Zhu N, Hu SB, Zhang H, Luo Y, Xu YF. Triptolide inhibits the multidrug resistance in prostate cancer cells via the downregulation of MDR1 expression. Neoplasma 2013; 60:598-604. [PMID: 23906293 DOI: 10.4149/neo_2013_077] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Triptolide (TPL) is a diterpenoid triepoxide derived from the Chinese herb Tripterygium wilfordii and possesses anti-tumor activity against a range of cancer cells. However, the effect of TPL on prostate cancer cells and its potential to overcome multidrug resistance (MDR) have not been explored. Therefore, in this study we used prostate cancer cell line DU145 as the experimental model and established DU145/ADM cell line resistant to adriamycin (ADM). Our results showed that TPL inhibited the proliferation and induced the cell cycle arrest and apoptosis of DU145 cells in a dose and time dependent manner. TPL decreased the levels of Cyclin D1 and anti-apoptotic protein Bcl-2, and increased the levels of pro-apoptotic proteins Fas and Bax. Furthermore, we found that TPL restored the sensitivity DU145/ADM cells to ADM in a dose dependent manner, and this was accompanied by the inhibition of MDR1 expression at both mRNA and protein levels. Taken together, these results provide strong evidence that TPL overcomes MDR in prostate cancer cells by downregulating MDR1 expression, and suggest that TPL is a promising agent for prostate cancer therapy, especially for chemoresistant prostate cancer.
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MESH Headings
- ATP Binding Cassette Transporter, Subfamily B
- ATP Binding Cassette Transporter, Subfamily B, Member 1/genetics
- ATP Binding Cassette Transporter, Subfamily B, Member 1/metabolism
- Antineoplastic Agents, Alkylating/pharmacology
- Apoptosis/drug effects
- Blotting, Western
- Cell Cycle/drug effects
- Cell Proliferation/drug effects
- Diterpenes/pharmacology
- Down-Regulation
- Drug Resistance, Multiple/drug effects
- Epoxy Compounds/pharmacology
- Humans
- Male
- Phenanthrenes/pharmacology
- Prostatic Neoplasms/drug therapy
- Prostatic Neoplasms/metabolism
- Prostatic Neoplasms/pathology
- RNA, Messenger/genetics
- Real-Time Polymerase Chain Reaction
- Reverse Transcriptase Polymerase Chain Reaction
- Tumor Cells, Cultured
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20
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Abstract
Chinese redbud (Cercis chinensis Bunge), a member of the Fabaceae, is an important ornamental plant native to China with reported desirable medicinal effects, including stimulating blood circulation, detumescence, and detoxification (1). In October 2011, wilt symptoms of gradual leaf yellowing, wilting, scorching (marginal browning), and twig dieback were observed on plants in Yangling, Shaanxi, China. The incidence of diseased plants was about 20% in two main areas (about 20 ha in Zijingshan Park in Zhengzhou, Henan Province; and about 3,000 ha in Taiping National Forest Park in Xi'an, Shaanxi Province). Wilted leaves of diseased plant senesced and died, but defoliation was not observed. Brown discoloration was observed in vascular tissues of petioles, twigs, and stems of diseased plants, sometimes in a ring pattern. The symptoms were often restricted to the lower part of the tree or a few branches. To identify the causal agent, six twigs (each approximately 50 mm in diameter and 10 cm long) sampled from an infected tree in Yangling were rinsed in running water, surface-sterilized with 75% ethanol for 2 min, rinsed in sterilized water three times, dried, cut into 1 cm long segments, and the segments put onto potato dextrose agar (PDA) medium. A fungal isolate was recovered from diseased vascular tissues of each sample when cultured on PDA in the dark at 25°C. After 5 days, colonies changed from white to black as a result of production of microsclerotia. Microscopic observation revealed that conidiophores were hyaline and verticillate, with three to four phialides at each node. Conidia were ellipsoidal, hyaline, single-celled, and 2.5 to 7.5 × 1.25 to 4.5 μm. On the basis of these morphological characteristics, the fungus was identified as Verticillium dahliae (3). To prove Koch's postulates, the roots of 10 healthy, 1-year-old C. chinensis plants were each irrigated in a greenhouse with 50 ml of a conidial suspension (1.0 × 107 spores/ml) of an isolate recovered from an infected plant (2); five control plants were inoculated similarly with sterilized water. Fifteen days after inoculation, the same wilt symptoms observed on the original plants had developed on 9 of the 10 inoculated plants, whereas the control plants remained healthy. The pathogen was recovered 15 days after inoculation by isolating from petiole and stem tissues of symptomatic plants, but was not isolated from the control plants. The internal transcribed spacer (ITS) region (ITS1-5.8S-ITS2) of the nuclear ribosomal DNA was PCR-amplified with primers ITS1 and ITS4 (4), and sequenced. BLAST analysis of the ITS sequence (GenBank Accession No. AB735536) showed 100% homology with that of an isolate of V. dahliae (FJ572050). To our knowledge, this is the first report of Verticillium wilt on C. chinensis in China. References: (1) Y. Li et al. J. Integr. Plant Biol. 47:1021, 2005. (2) H. A. Melouk and C. E. Horner. Phytopathology 65:767, 1975. (3) G. F. Pegg and B. L. Brady. Verticillium Wilts, CABI Publishing, Oxford, UK, 2002. (4) T. J. White et al. PCR Protocols: A Guide to Methods and Applications. M. A. Innis et al., eds. Academic Press, San Diego, CA, 1990.
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Affiliation(s)
- W J Lu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, China
| | - Y J Liu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, China
| | - H Q Zhu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, China
| | - W J Shang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, China
| | - J R Yang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, China
| | - X P Hu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, China
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Abstract
Ketamine is a relatively new recreational drug used by youngsters in recent decades. Its toxic effects on the genitourinary system were first reported in 2007, and now attract extensive attention from urologists, pharmacologists, and toxicologists all over the world. As many front-line health professionals and medical social workers are still unaware of this new clinical entity and an increasing number of the drug users seek help for urological symptoms, this mini-review aimed to summarise the clinical features and possible mechanisms of ketamine-induced genitourinary toxicity. By raising public awareness of these toxic effects, the authors hope that the contents of this review will be widely disseminated not only to medical professionals, but also to relevant government departments and the general public.
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Affiliation(s)
- Y B Wei
- Department of Urology, The Second Xiangya Hospital, Central South University, 139 Middle Renmin Road, Changsha 410011, Hunan, China
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Lo YC, Chen WC, Huang WT, Lin YC, Liu MC, Kuo HW, Chuang JH, Yang JR, Liu MT, Wu HS, Yang CH, Chou JH, Chang FY. Surveillance of avian influenza A(H7N9) virus infection in humans and detection of the first imported human case in Taiwan, 3 April to 10 May 2013. Euro Surveill 2013. [DOI: 10.2807/ese.18.20.20479-en] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
On 3 April 2013, suspected and confirmed cases of influenza A(H7N9) virus infection became notifiable in the primary care sector in Taiwan, and detection of the virus became part of the surveillance of severe community-acquired pneumonia. On 24 April, the first imported case, reported through both surveillance systems, was confirmed in a man returning from China by sequencing from endotracheal aspirates after two negative throat swabs. Three of 139 contacts were ill and tested influenza A(H7N9)-negative.
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Affiliation(s)
- Y C Lo
- Centers for Disease Control, Taipei, Taiwan
| | - W C Chen
- Centers for Disease Control, Taipei, Taiwan
| | - W T Huang
- Centers for Disease Control, Taipei, Taiwan
| | - Y C Lin
- Centers for Disease Control, Taipei, Taiwan
| | - M C Liu
- Centers for Disease Control, Taipei, Taiwan
| | - H W Kuo
- Centers for Disease Control, Taipei, Taiwan
| | - J H Chuang
- Centers for Disease Control, Taipei, Taiwan
| | - J R Yang
- Centers for Disease Control, Taipei, Taiwan
| | - M T Liu
- Centers for Disease Control, Taipei, Taiwan
| | - H S Wu
- Centers for Disease Control, Taipei, Taiwan
| | - C H Yang
- Centers for Disease Control, Taipei, Taiwan
| | - J H Chou
- Centers for Disease Control, Taipei, Taiwan
| | - F Y Chang
- Centers for Disease Control, Taipei, Taiwan
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Lo YC, Chen WC, Huang WT, Lin YC, Liu MC, Kuo HW, Chuang JH, Yang JR, Liu MT, Wu HS, Yang CH, Chou JH, Chang FY. Surveillance of avian influenza A(H7N9) virus infection in humans and detection of the first imported human case in Taiwan, 3 April to 10 May 2013. Euro Surveill 2013; 18:20479. [PMID: 23725865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023] Open
Abstract
On 3 April 2013, suspected and confirmed cases of influenza A(H7N9) virus infection became notifiable in the primary care sector in Taiwan, and detection of the virus became part of the surveillance of severe community-acquired pneumonia. On 24 April, the first imported case, reported through both surveillance systems, was confirmed in a man returning from China by sequencing from endotracheal aspirates after two negative throat swabs. Three of 139 contacts were ill and tested influenza A(H7N9)-negative.
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Affiliation(s)
- Y C Lo
- Centers for Disease Control, Taipei, Taiwan
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Yang JR, Hsu CW, Liao SC, Lin YT, Chen LR, Yuan K. Transplantation of embryonic stem cells improves the regeneration of periodontal furcation defects in a porcine model. J Clin Periodontol 2013; 40:364-71. [DOI: 10.1111/jcpe.12069] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2011] [Revised: 03/05/2012] [Accepted: 01/09/2013] [Indexed: 12/31/2022]
Affiliation(s)
- Jenn-Rong Yang
- Division of Physiology; Livestock Research Institute; Council of Agriculture Executive Yuan; Tainan Taiwan
| | - Chia-Wen Hsu
- Dental Department; Tainan Municipal Hospital; Tainan Taiwan
| | - Shih-Chung Liao
- Department of Oral Medicine; National Cheng Kung University Hospital; Tainan Taiwan
| | - Yu-Ting Lin
- Division of Physiology; Livestock Research Institute; Council of Agriculture Executive Yuan; Tainan Taiwan
| | - Lih-Ren Chen
- Division of Physiology; Livestock Research Institute; Council of Agriculture Executive Yuan; Tainan Taiwan
| | - Kuo Yuan
- Department of Oral Medicine; National Cheng Kung University Hospital; Tainan Taiwan
- Institute of Oral Medicine; College of Medicine; National Cheng Kung University; Tainan Taiwan
- School of Dentistry; College of Oral Medicine; Taipei Medical University; Taipei Taiwan
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Yang JR, Liao CH, Pang CY, Huang LLH, Chen YL, Shiue YL, Chen LR. Transplantation of porcine embryonic stem cells and their derived neuronal progenitors in a spinal cord injury rat model. Cytotherapy 2012; 15:201-8. [PMID: 23245953 DOI: 10.1016/j.jcyt.2012.09.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2012] [Revised: 09/04/2012] [Accepted: 09/17/2012] [Indexed: 02/07/2023]
Abstract
BACKGROUND AIMS The purpose of this study was to investigate therapeutic potential of green fluorescent protein expressing porcine embryonic stem (pES/GFP(+)) cells in A rat model of spinal cord injury (SCI). METHODS Undifferentiated pES/GFP(+) cells and their neuronal differentiation derivatives were transplanted into the contused spinal cord of the Long Evans rat, and in situ development of the cells was determined by using a live animal fluorescence optical imaging system every 15 days. After pES/GFP(+) cell transplantation, the behavior functional recovery of the SCI rats was assessed with the Basso, Beattie, and Bresnahan Locomotor Rating Scale (BBB scale), and the growth and differentiation of the grafted pES/GFP(+) cells in the SCI rats were analyzed by immunohistochemical staining. RESULTS The relative green fluorescent protein expression level was decreased for 3 months after transplantation. The pES/GFP(+)-derived cells positively stained with neural specific antibodies of anti-NFL, anti-MBP, anti-SYP and anti-Tuj 1 were detected at the transplanted position. The SCI rats grafted with the D18 neuronal progenitors showed a significant functional recovery of hindlimbs and exhibited the highest BBB scale score of 15.20 ± 1.43 at week 24. The SCI rats treated with pES/GFP(+)-derived neural progenitors demonstrated a better functional recovery. CONCLUSIONS Transplantation of porcine embryonic stem (pES)-derived D18 neuronal progenitors has treatment potential for SCI, and functional behavior improvement of grafted pES-derived cells in SCI model rats suggests the potential for further application of pES cells in the study of replacement medicine and functionally degenerative pathologies.
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Affiliation(s)
- Jenn-Rong Yang
- Division of Physiology, Livestock Research Institute, Council of Agriculture, Executive Yuan, Tainan, Taiwan
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Abstract
Alfalfa (Medicago sativa Linn.), widely grown throughout the world, is an important perennial forage crop. It is high in protein and digestible fiber and is an excellent source of several vitamins (A, D, E, and K) and minerals for beef cattle, horses, sheep, goats, and even humans (2). Wilt symptoms on alfalfa were observed during a disease survey in Yangling, Shaanxi, China in 2009. Symptoms included discoloration, shortened internode, and plant death. However, the vascular tissue of diseased alfalfa plants did not exhibit discoloration and typical "V" symptoms of Verticillium albo-atrum infection. Eleven fungal isolates were obtained from diseased alfalfa plants in Yangling by a tissue isolation method (1). Isolates were cultured on Czapek Dox Agar (CDA; pH 7.2) slants at 22 ± 1°C in darkness. Colonies on CDA plates were whitish and cream-white when viewed from the underside, later becoming dark gray due to the formation of gray or dark brown chlamydospores in single or in short chains. DNA was extracted from each isolate and the internal transcribed spacer (ITS) region of the nuclear ribosomal DNA (rDNA) was amplified and sequenced using primers ITS-1F and ITS4. The 11 isolates were divided into five groups based on their in vitro morphological characters. A single isolate from each of the five groups was chosen for ITS sequencing. All five isolates had the same ITS sequence (GenBank Accession No. AB551216). On the basis of the ITS sequence and morphology (4), these isolates were identified as V. nigrescens Pethyhr. (recently renamed as Gibellulopsis nigrescens). Five representative isolates were used to fulfill Koch's postulates. Alfalfa seeds (cv. Cossack) were surface sterilized with 75% ethanol for 5 min, allowed to dry, and planted into cow dung compost that had been autoclaved at 160°C for 2 h. Plants were cultivated under controlled greenhouse conditions at 23 to 25°C with a photoperiod of 14 h. Inoculum was prepared by comminuting 15-day-old cultures and sterile deionized water into a suspension of mycelial fragments and conidia (105 to 106 CFU/ml) in a blender. Seedlings (four-leaf stage) were inoculated by immersing roots in the inoculum suspension for 60 min (3). Each isolate was inoculated onto 30 seedlings, six in each pot; another 30 seedlings were soaked with sterile deionized water for 60 min as a control. After 20 days in the greenhouse, all inoculated plants exhibited wilt symptoms similar to the original wilt symptoms observed on diseased alfalfa plants. In contrast, none of the control plants showed wilt symptoms. The pathogen was reisolated from all diseased plants and confirmed to the original ones. To our knowledge, this is the first report of V. nigrescens infecting M. sativa in China, indicating V. nigrescens as one possible important pathogen of alfalfa. References: (1) O. D. Dhingra and J. B. Sinclair. Basic Plant Pathology Methods. CRC Press, Boca Raton, FL, 1995. (2) D. Jasjeet et al. J. Adv. Sci. Res. 2:50, 2011. (3) H. A. Melouk and C. E. Horner. Phytopathology 64:1267, 1974. (4) R. Zare et al. Nova Hedwigia 85:463, 2007.
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Affiliation(s)
- X P Hu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, China
| | - M X Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, China
| | - D F Hu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, China
| | - J R Yang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, China
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Wei YB, Yang JR. Moxifloxacin relieves the persistent symptoms of lower urinary tract after cessation of ketamine abuse. Hong Kong Med J 2011; 17:515. [PMID: 22147328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023] Open
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28
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Lin YP, Chen LR, Chen CF, Liou JF, Chen YL, Yang JR, Shiue YL. Identification of early transcripts related to male development in chicken embryos. Theriogenology 2010; 74:1161-1178.e1-8. [PMID: 20728927 DOI: 10.1016/j.theriogenology.2010.05.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2009] [Revised: 05/08/2010] [Accepted: 05/15/2010] [Indexed: 01/21/2023]
Abstract
Early transcripts related to male development in chicken embryos and their expression profiles were examined. A total of 89 and 127 candidate male development transcripts that represented 83 known and 119 unknown non-redundant sequences, respectively, were characterized in an embryonic day 3 (E3; Hamburger and Hamilton Stage 20: HH20) male-subtract-female complementary DNA library. Of 35 selected transcripts, quantitative reverse transcription-polymerase chain reaction validated that the expression levels of 25 transcripts were higher in male E3 whole embryos than in females (P < 0.05). Twelve of these transcripts mapped to the Z chromosome. At 72 wk of age, 20 and 4 transcripts were expressed at higher levels in the testes and brains of male than in the ovaries and brains of female chickens (P < 0.05), respectively. Whole mount and frozen cross-section in situ hybridization, as well as Western blotting analysis further corroborated that riboflavin kinase (RFK), WD repeat domain 36 (WDR36), and EY505808 transcripts; RFK and WDR36 protein products were predominantly expressed in E7 male gonads. Treatment with an aromatase inhibitor formestane at E4 affected the expression levels at E7 of the coatomer protein complex (subunit beta 1), solute carrier family 35 member F1, LOC427316 and EY505812 transcripts across both sexes (P < 0.05), similar to what was observed for the doublesex and mab-3 related transcription factor 1 gene. The interaction effects of sex by formestane treatment were observed in 15 candidate male development transcripts (P < 0.05). Taken together, we identified a panel of potentially candidate male development transcripts during early chicken embryogenesis; some might be regulated by sex hormones.
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Affiliation(s)
- Yuan-Ping Lin
- Institute of Biomedical Science, National Sun Yat-sen University, Kaohsiung, Taiwan
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29
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Yang JR, Liao CH, Pang CY, Huang LLH, Lin YT, Chen YL, Shiue YL, Chen LR. Directed Differentiation into Neural Lineages and Therapeutic Potential of Porcine Embryonic Stem Cells in Rat Parkinson's Disease Model. Cell Reprogram 2010; 12:447-61. [DOI: 10.1089/cell.2009.0078] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Affiliation(s)
- Jenn-Rong Yang
- Division of Physiology, Livestock Research Institute, Council of Agriculture, Executive Yuan, Tainan, Taiwan, R.O.C
- Institute of Biomedical Science, National Sun Yat-Sen University, Kaohsiung, Taiwan, R.O.C
| | - Chia-Hsin Liao
- Department of Research, Buddhist Tzu-Chi General Hospital, Hualien, Taiwan, R.O.C
- Institute of Medical Science, Buddhist Tzu-Chi University, Hualien, Taiwan, R.O.C
| | - Cheng-Yoong Pang
- Department of Research, Buddhist Tzu-Chi General Hospital, Hualien, Taiwan, R.O.C
- Graduate Institute of Clinical Medicine, College of Medicine, Buddhist Tzu-Chi University, Hualien, Taiwan, R.O.C
| | - Lynn Ling-Huei Huang
- Institute of Biotechnology, National Cheng Kung University, Tainan, Taiwan, R.O.C
- Institute of Clinical Medicine, National Cheng Kung University, Tainan, Taiwan, R.O.C
| | - Yu-Ting Lin
- Division of Physiology, Livestock Research Institute, Council of Agriculture, Executive Yuan, Tainan, Taiwan, R.O.C
| | - Yi-Ling Chen
- Division of Physiology, Livestock Research Institute, Council of Agriculture, Executive Yuan, Tainan, Taiwan, R.O.C
- Institute of Biomedical Science, National Sun Yat-Sen University, Kaohsiung, Taiwan, R.O.C
| | - Yow-Ling Shiue
- Institute of Biomedical Science, National Sun Yat-Sen University, Kaohsiung, Taiwan, R.O.C
| | - Lih-Ren Chen
- Division of Physiology, Livestock Research Institute, Council of Agriculture, Executive Yuan, Tainan, Taiwan, R.O.C
- Institute of Biotechnology, National Cheng Kung University, Tainan, Taiwan, R.O.C
- Institute of Biotechnology, Southern Taiwan University, Tainan, Taiwan, R.O.C
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Yang JR, Li WC, Tsai HL, Hsu JT, Shiojiri M. Electron microscopy investigations of V defects in multiple InGaN/GaN quantum wells and InGaN quantum dots. J Microsc 2010; 237:275-81. [PMID: 20500380 DOI: 10.1111/j.1365-2818.2009.03242.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The mechanism of high emission of InGaN-based multiple quantum wells, which exhibit exceptionally high light emission efficiency despite their high defect density, is still not fully understood. Here, we deal with this problem, showing the details of structure and formation of V defects in the multiple quantum wells and reviewing interpretations proposed so far. Then, we show a structural investigation of three-dimensional high-density quantum dots, fabricated instead of quantum wells in the active layer. The shape and size of the InGaN quantum dots and the SiN(x) masks for the growth of the dots have been revealed using high-angle annular dark field scanning transmission electron microscopy, energy dispersive X-ray spectroscopy nanoanalysis and high-resolution transmission electron microscopy.
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Affiliation(s)
- J R Yang
- Institute of Materials Science and Engineering, National Taiwan University, Taipei, Taiwan, Republic of China
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31
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Yang JR, Shiue YL, Liao CH, Lin SZ, Chen LR. Establishment and characterization of novel porcine embryonic stem cell lines expressing hrGFP. Cloning Stem Cells 2009; 11:235-44. [PMID: 19508116 DOI: 10.1089/clo.2008.0050] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The purpose of this study was to establish transgenic porcine embryonic stem (pES) cell lines that can stably express report gene. Established pES cell line at passage 44 was transfected with pAAV-hrGFP Control Plasmid by electroporation-mediated, viral vector-mediated, and liposome-mediated strategies. Although there were several pES colonies expressing green fluorescent protein (GFP) obtained from the retrovirus-mediated and liposome-mediated transfection methods, no stable GFP-expressing pES cell line was then derived. A total of 28 GFP-expressing pES cell colonies were obtained following electroporation with two DC pulses of 150 V/cm for 10 msec and three GFP-expressing pES (pES/GFP(+)) cell lines were established. These pES/GFP(+) cell lines stably expressed exogenous GFP and continuously proliferated in vitro for more than 90 passages in 20 months. They maintained normal karyotype of 36 + XX and typical characteristics of pluripotent stem cells, including expression of pluripotent markers Oct-4, AP, SSEA-4, TRA-1-60, and TRA-1-81, formation of embryoid bodies under suspension culture. They were able to differentiate in vitro into neural and cardiomyocytic lineage, respectively, under suitable induction. To our knowledge, there has been no report of establishing GFP-expressing pES cell lines. These novel pES/GFP(+) cell lines established in this study might serve as a nonrodent model and would benefit to the studies involving ES cell transplantation, cell replacement therapy, and tissue regeneration due to their traceable capacity.
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Affiliation(s)
- Jenn-Rong Yang
- Division of Physiology, Livestock Research Institute , Council of Agriculture, Executive Yuan, Tainan, Taiwan, Republic of China
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32
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Shiue YL, Liou JF, Shiau JW, Yang JR, Chen YH, Tailiu JJ, Chen LR. In vitro culture period but not the passage number influences the capacity of chimera production of inner cell mass and its deriving cells from porcine embryos. Anim Reprod Sci 2006; 93:134-43. [PMID: 16143474 DOI: 10.1016/j.anireprosci.2005.07.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2004] [Revised: 06/16/2005] [Accepted: 07/11/2005] [Indexed: 10/25/2022]
Abstract
Mammalian embryonic stem (ES) cells are pluripotent cells derived from the inner cell mass (ICM) of the blastocyst. These cells are able to proliferate continuously without differentiation in vitro under suitable conditions. Their capacity of pluripotency in differentiation will be resumed when they are reintroduced into host embryos, when they will contribute to the embryonic development to form chimeric individuals. Manipulation of ES cells has been mainly established from studies in the mouse, and is powerful in the production of transgenic animals. Porcine ICM-derived cell lines possess the same cellular morphology and in vitro behavior as those of murine ES cells, but have lower efficiency in chimera formation when reintroduced into host embryos. This study was to determine the influences of passage number and the duration of in vitro culture on the capacity of porcine ICM-derived cells in the generation of chimeric embryos. The results showed that when passage number of porcine ICM-derived cells was less than 15, there were no detrimental effects on its integration ability. Extending the culture time up to 6 days in each passage of porcine ICM-derived cells impaired its integration capacity into the host blastocyst. Porcine ICM-derived cells cultured for more than 4 days in each passage should not be used for blastocyst injection if high efficiency of chimera production is to be achieved.
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Affiliation(s)
- Yow-Ling Shiue
- Institute of Biomedical Sciences, National Sun Yat-sen University, Kaohsiung 804, Taiwan
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33
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Lin YF, Chang SJ, Yang JR, Lee YP, Hsu AL. Effects of supplemental vitamin E during the mature period on the reproduction performance of Taiwan Native Chicken cockerels. Br Poult Sci 2005; 46:366-73. [PMID: 16050192 DOI: 10.1080/00071660500098186] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
One-day-old Taiwan native male chicks were fed with maize-soybean rearing diets without supplemental vitamin E to 23 weeks of age. From 23 to 52 weeks of age, the cockerels (n = 90) were assigned at random to 5 dietary treatments and fed with maize-soybean diets supplemented with 0, 20, 40, 80 and 160 mg/kg of vitamin E (dl-alpha-tocopherol acetate). Pullets (225) of the same age were fed with standard diets throughout. They were artificially inseminated with one dose of 0.04 ml/bird intact and 5-fold diluted pooled semen at 31 to 43 weeks of age and at 49 weeks of age, respectively. The criteria evaluated included: semen quality, fertility and maximum and effective duration of fertility, blood characteristics, body and testes weight. Supplemental vitamin E did not affect cockerels' effective duration of fertility and percentage of fertility. However, when pullets were inseminated with diluted semen, supplementing 160 mg/kg vitamin E increased the maximum duration of fertility at 49 weeks of age. Cockerels receiving 40 to 160mg/kg supplements had higher sperm viability and motility after 39 weeks of age and those fed 80 mg/kg had higher sperm concentration at 39 weeks of age. Cockerels receiving supplements of more than 40 mg/kg vitamin E had higher body weight gain. Plasma cholesterol and testosterone were not affected by supplemental vitamin E. However, plasma luteinising hormone (LH) concentration was lower in cockerels fed 160 mg/kg. Lack of supplemental vitamin E over 39 weeks was associated with lower semen quality but did not reduce the proportion of fertile eggs laid by inseminated hens, perhaps because the insemination dose compensated for low sperm quality. We found that the maximum duration of fertility might be improved by supplementing 160 mg/kg vitamin E at 49 weeks of age.
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Affiliation(s)
- Y F Lin
- The Livestock Research Institute, Council of Agriculture, Tainan, Taiwan
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34
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Wu LS, Sheu SY, Huang CC, Chiu CH, Huang JC, Yang JR, Lian WX, Lai CH, Chen YP, Lin JH. Ginseng flowers stimulate progesterone production from bovine luteal cells. Am J Chin Med 2001; 28:371-7. [PMID: 11154050 DOI: 10.1142/s0192415x0000043x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Our previous report first showed evidence that polysaccharides isolated from ginseng leaves obtained from Jilin, China possess luteotropic activities. In this study, we made further investigations on the root and flowers of Korean ginseng by means of the same bioassay system described briefly as follows. Frozen-thawed bovine luteal cells (1 x 10(5) cells/ml/well) in M199 were incubated in 24-well culture plates at 37 degrees C in a 5 % CO2 incubator. Ten microl of tested drugs with 1, 10 and 100 microg/ml were added into each well. After 4- and 24-hr incubation, the media were harvested and assayed for progesterone by an enzyme immunoassay. The production of progesterone from cells is the indicator for evaluating the action of tested drugs. Results showed that hot water extracts ofginseng flowers (GF-1) with 10 to 100 microg/ml significantly increased progesterone production, whereas those from ginseng root (GR-1) could not. Crude polysaccharides (GF-2) isolated from GF-1 is the active component and the small molecules (mw < 10,000 dalton) are excluded, indicating that the ginseng root has no luteotropic activities, but the polysaccharides of ginseng flowers have.
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Affiliation(s)
- L S Wu
- Department of Animal Science, National Taiwan University, Taipei
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35
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Chiu MJ, Yang JR, Huang KM, Chen JH. Functional MRI of the activated human visual cortex. J Formos Med Assoc 1996; 95:396-8. [PMID: 8688706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
We explored the possibility of performing functional magnetic resonance imaging of visual evoked response in the primary visual cortex with a clinical MRI imager of 1.5 tesla. Gradient echo pulse sequence was chosen to acquire the functional image and binocular flash visual stimulation by light-proof goggles containing light emitting diodes was used as the source of cerebral activation. Data processing was performed utilizing direct subtraction for averaged images, correlation coefficient, statistical parametric mapping and matched filter. Of those methods, correlation coefficient and statistic parametric mapping proved to be the methods of choice in our study.
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Affiliation(s)
- M J Chiu
- Department of Neurology, National Taiwan University Hospital, Taipei, ROC
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36
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Mo ZN, Huang X, Zhang SC, Yang JR. Early and late long-term effects of vasectomy on serum testosterone, dihydrotestosterone, luteinizing hormone and follicle-stimulating hormone levels. J Urol 1995; 154:2065-9. [PMID: 7500459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
PURPOSE We investigated whether the association between vasectomy and prostate cancer has a hormonal basis. MATERIALS AND METHODS We examined serum testosterone, dihydrotestosterone, luteinizing hormone and follicle-stimulating hormone levels by radioimmunoassay on 91 pairs of men who did and did not undergo vasectomy. RESULTS Men who underwent vasectomy 10 to 19 years previously had higher dihydrotestosterone levels than age matched controls. In men who underwent vasectomy 20 years or more ago testosterone was higher than in corresponding controls. No statistically significant difference in luteinizing hormone and follicle-stimulating hormone levels was noted between the men who had had vasectomy and controls. CONCLUSIONS Our results indirectly support the hypothesis that there is an elevated risk of prostate cancer among men who underwent vasectomy 20 or more years previously.
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Affiliation(s)
- Z N Mo
- Urology Department, Second Affiliated Hospital of Hunan Medical University, Peoples Republic of China
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Yang JR, Chen GX, Li WM. [Effects of composite xueliting on four gastric ulcer models in rats and mice]. Zhongguo Zhong Xi Yi Jie He Za Zhi 1995; 15:416-8. [PMID: 7580064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Composite Xueliting (CXLT) was found to be an effective anti-ulcer agent in four experimental models in rats and mice, namely, the stress restraint-induced, histamin-induced, salicylic acid-induced and reserpine-induced ulcers. In above-mentioned models, CXLT (0.214-0.856 g/kg, 1/d x 5, per os) could inhibit gastric ulcer by 40%-63%, 48%-85%, 68%-87% and 27%-65% respectively. Among these, the salicylic acid-induced ulcer was more markedly inhibited. The result suggested that CXLT had the protective function against the gastric ulcer.
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Affiliation(s)
- J R Yang
- Dept. of Pharmacology, Wannan Medical College, Anhui
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Yang JR, Xi T, Wu DM, Rao MR. [Effects of m-nifedipine and nifedipine on hemodynamics in renovascular hypertensive rats]. Zhongguo Yao Li Xue Bao 1994; 15:260-3. [PMID: 7976383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
In the renovascular hypertensive myocardial hypertrophic rats of prevention and regressive groups, the blood pressure was lowered by m-nifedipine (m-Nif) or nifedipine (Nif) of 20 mg.kg-1.d-1, i.g., for 9 wk vs control (LVH) group (P < 0.01). From the isolated working hearts of prevention and regressive groups, it was found that AP, LVSP, +dp/dtmax, -dp/dtmax, CF, and CI values of m-Nif and Nif groups increased higher than that of LVH group, but LVEDP and T was lower in m-Nif and Nif groups. It was concluded that m-Nif exhibits the similar effects like Nif in prevention and reversion of renovascular hypertensive LVH and improvement of hemodynamics.
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Affiliation(s)
- J R Yang
- Department of Cardiovascular Pharmacology, Nanjing Medical College, China
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