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Wen Z, Luo D, Wang S, Rong R, Evers BM, Jia L, Fang Y, Daoud EV, Yang S, Gu Z, Arner EN, Lewis CM, Solis Soto LM, Fujimoto J, Behrens C, Wistuba II, Yang DM, Brekken RA, O'Donnell KA, Xie Y, Xiao G. Deep Learning-Based H-Score Quantification of Immunohistochemistry-Stained Images. Mod Pathol 2024; 37:100398. [PMID: 38043788 DOI: 10.1016/j.modpat.2023.100398] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 11/14/2023] [Accepted: 11/21/2023] [Indexed: 12/05/2023]
Abstract
Immunohistochemistry (IHC) is a well-established and commonly used staining method for clinical diagnosis and biomedical research. In most IHC images, the target protein is conjugated with a specific antibody and stained using diaminobenzidine (DAB), resulting in a brown coloration, whereas hematoxylin serves as a blue counterstain for cell nuclei. The protein expression level is quantified through the H-score, calculated from DAB staining intensity within the target cell region. Traditionally, this process requires evaluation by 2 expert pathologists, which is both time consuming and subjective. To enhance the efficiency and accuracy of this process, we have developed an automatic algorithm for quantifying the H-score of IHC images. To characterize protein expression in specific cell regions, a deep learning model for region recognition was trained based on hematoxylin staining only, achieving pixel accuracy for each class ranging from 0.92 to 0.99. Within the desired area, the algorithm categorizes DAB intensity of each pixel as negative, weak, moderate, or strong staining and calculates the final H-score based on the percentage of each intensity category. Overall, this algorithm takes an IHC image as input and directly outputs the H-score within a few seconds, significantly enhancing the speed of IHC image analysis. This automated tool provides H-score quantification with precision and consistency comparable to experienced pathologists but at a significantly reduced cost during IHC diagnostic workups. It holds significant potential to advance biomedical research reliant on IHC staining for protein expression quantification.
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Affiliation(s)
- Zhuoyu Wen
- Quantitative Biomedical Research Center, Peter O'Donnell Jr School of Public Health, The University of Texas Southwestern Medical Center, Dallas, Texas
| | - Danni Luo
- Quantitative Biomedical Research Center, Peter O'Donnell Jr School of Public Health, The University of Texas Southwestern Medical Center, Dallas, Texas
| | - Shidan Wang
- Quantitative Biomedical Research Center, Peter O'Donnell Jr School of Public Health, The University of Texas Southwestern Medical Center, Dallas, Texas
| | - Ruichen Rong
- Quantitative Biomedical Research Center, Peter O'Donnell Jr School of Public Health, The University of Texas Southwestern Medical Center, Dallas, Texas
| | - Bret M Evers
- Department of Pathology, The University of Texas Southwestern Medical Center, Dallas, Texas
| | - Liwei Jia
- Department of Pathology, The University of Texas Southwestern Medical Center, Dallas, Texas
| | - Yisheng Fang
- Department of Pathology, The University of Texas Southwestern Medical Center, Dallas, Texas
| | - Elena V Daoud
- Department of Pathology, The University of Texas Southwestern Medical Center, Dallas, Texas
| | - Shengjie Yang
- Quantitative Biomedical Research Center, Peter O'Donnell Jr School of Public Health, The University of Texas Southwestern Medical Center, Dallas, Texas
| | - Zifan Gu
- Quantitative Biomedical Research Center, Peter O'Donnell Jr School of Public Health, The University of Texas Southwestern Medical Center, Dallas, Texas
| | - Emily N Arner
- Department of Surgery, The University of Texas Southwestern Medical Center, Dallas, Texas; Hamon Center for Therapeutic Oncology Research, The University of Texas Southwestern Medical Center, Dallas, Texas
| | - Cheryl M Lewis
- Department of Pathology, The University of Texas Southwestern Medical Center, Dallas, Texas; Harold C. Simmons Comprehensive Cancer Center, The University of Texas Southwestern Medical Center, Dallas, Texas
| | - Luisa M Solis Soto
- Division of Pathology and Laboratory Medicine, Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Junya Fujimoto
- Division of Pathology and Laboratory Medicine, Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Carmen Behrens
- Division of Cancer Medicine, Department of Thoracic/Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Ignacio I Wistuba
- Division of Pathology and Laboratory Medicine, Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Donghan M Yang
- Quantitative Biomedical Research Center, Peter O'Donnell Jr School of Public Health, The University of Texas Southwestern Medical Center, Dallas, Texas
| | - Rolf A Brekken
- Department of Surgery, The University of Texas Southwestern Medical Center, Dallas, Texas; Hamon Center for Therapeutic Oncology Research, The University of Texas Southwestern Medical Center, Dallas, Texas; Harold C. Simmons Comprehensive Cancer Center, The University of Texas Southwestern Medical Center, Dallas, Texas
| | - Kathryn A O'Donnell
- Harold C. Simmons Comprehensive Cancer Center, The University of Texas Southwestern Medical Center, Dallas, Texas; Hamon Center for Regenerative Medicine, The University of Texas Southwestern Medical Center, Dallas, Texas; Department of Molecular Biology, The University of Texas Southwestern Medical Center, Dallas, Texas
| | - Yang Xie
- Quantitative Biomedical Research Center, Peter O'Donnell Jr School of Public Health, The University of Texas Southwestern Medical Center, Dallas, Texas; Hamon Center for Regenerative Medicine, The University of Texas Southwestern Medical Center, Dallas, Texas; Department of Bioinformatics, The University of Texas Southwestern Medical Center, Dallas, Texas
| | - Guanghua Xiao
- Quantitative Biomedical Research Center, Peter O'Donnell Jr School of Public Health, The University of Texas Southwestern Medical Center, Dallas, Texas; Hamon Center for Regenerative Medicine, The University of Texas Southwestern Medical Center, Dallas, Texas; Department of Bioinformatics, The University of Texas Southwestern Medical Center, Dallas, Texas.
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Pan N, Shi J, Du S, Qiu Z, Ran Q, Guo Y, Ma A, Zhang Q, Sang A, Yang X. Honokiol Attenuates Choroidal Neovascularization by Inhibiting the Hypoxia-Inducible Factor-α/Vascular Endothelial Growth Factor Axis via Nuclear Transcription Factor-Kappa B Activation. Curr Eye Res 2024; 49:88-96. [PMID: 37707827 DOI: 10.1080/02713683.2023.2259634] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Revised: 08/20/2023] [Accepted: 09/08/2023] [Indexed: 09/15/2023]
Abstract
PURPOSE Honokiol is a lignan isolated from Magnolia officinalis and exhibits anti-angiogenic properties. This study was conducted to investigate the role of honokiol in choroidal neovascularization. METHODS C57BL/6 mice were treated with honokiol at 10-20 mg/kg by daily intraperitoneal injection from day 1 to 6 after laser photocoagulation. ARPE-19 cells were cultured under hypoxic conditions with or without the presence of honokiol. After laser photocoagulation and honokiol treatment, hematoxylin and eosin staining, immunofluorescence and fundus fluorescein angiography were used to analyze the effect of honokiol on choroidal neovascularization formation. Quantitative real-time PCR, western blot, enzyme-linked immunosorbent assay, immunofluorescence, luciferase assay, and chromatin immunoprecipitation were performed to explore the mechanism of honokiol in the pathological process of choroidal neovascularization. Finally, the role of honokiol on the human choroidal vascular endothelial cells was detected by using 5-ethynyl-20-deoxyuridine assay, Transwell and Tube formation assays. RESULTS The results of hematoxylin and eosin staining and immunofluorescence suggested that honokiol reduced the thickness, length, and area of choroidal neovascularization lesions in laser-induced choroidal neovascularization mouse model. Fundus fluorescein angiography showed that choroidal neovascularization leakage was reduced in honokiol group and the concentration of 20 mg/kg showed better effects. Mechanism studies have shown that honokiol exerted inhibitory effects on choroidal neovascularization by inactivating hypoxia-inducible factor-1α/vascular endothelial growth factor axis through the nuclear transcription factor-kappa B signaling pathway. The same results were obtained in ARPE-19 cells under hypoxic conditions. Furthermore, the conditional medium of retinal pigmented epithelial cells promoted the proliferation, migration, and tube formation of human choroidal vascular endothelial cells, while honokiol reversed these. CONCLUSION We demonstrated that honokiol attenuated choroidal neovascularization formation by inactivating the hypoxia-inducible factor-1α/vascular endothelial growth factor axis through nuclear transcription factor-kappa B signaling pathway.
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Affiliation(s)
- Ningxin Pan
- Department of Ophthalmology, Affiliated Hospital of Nantong University, Nantong, China
| | - Jian Shi
- Department of Ophthalmology, Affiliated Hospital of Nantong University, Nantong, China
| | - Shu Du
- Department of Ophthalmology, Lixiang Eye Hospital of Soochow University, Suzhou, China
| | - Zhaoxian Qiu
- Department of Ophthalmology, Affiliated Hospital of Nantong University, Nantong, China
| | - Qiliang Ran
- Department of Ophthalmology, Affiliated Hospital of Nantong University, Nantong, China
| | - Yangchen Guo
- Department of Ophthalmology, Affiliated Hospital of Nantong University, Nantong, China
| | - Anping Ma
- Department of Ophthalmology, Affiliated Hospital of Nantong University, Nantong, China
| | - Qi Zhang
- Department of Ophthalmology, Affiliated Hospital of Nantong University, Nantong, China
| | - Aimin Sang
- Department of Ophthalmology, Affiliated Hospital of Nantong University, Nantong, China
| | - Xiaowei Yang
- Department of Ophthalmology, Affiliated Hospital of Nantong University, Nantong, China
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Hong W, Hu C, Wang C, Zhu B, Tian M, Qin H. Effects of amyloid β (Aβ)42 and Gasdermin D on the progression of Alzheimer's disease in vitro and in vivo through the regulation of astrocyte pyroptosis. Aging (Albany NY) 2023; 15:12209-12224. [PMID: 37921870 PMCID: PMC10683627 DOI: 10.18632/aging.205174] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 09/26/2023] [Indexed: 11/05/2023]
Abstract
PURPOSE The study aimed to investigate whether astrocyte pyroptosis, and the subsequent neuroinflammatory response that exerts amyloid β (Aβ) neurotoxic effects, has an effect on endothelial cells, along with the underlying mechanisms. METHODS In vivo, 5 μL of disease venom was injected into the lateral ventricle of APP/PS1 mice for treatment. Pyroptosis was induced by treating astrocytes with Aβ42 in vitro. Small interfering RNA (siRNA) was used to silence caspase-1 and Gasdermin D (GSDMD) mRNA expression. Cell viability was determined using a CCK-8 detection kit. Scanning electron microscopy (SEM), Annexin V/propidium iodide (PI) double staining, RT-qPCR, immunofluorescence, western blotting, and enzyme-linked immunosorbent assay (ELISA) were used to detect cell pyroptosis. The degree of pathological damage to the brain and aortic tissue was assessed by hematoxylin-eosin staining and immunohistochemistry. RESULTS Aβ42 induced astrocyte pyroptosis dependent on the GSDMD/Gasdermin E (GSDME)/Caspase 11/NLRP3 pathway, releasing large amounts of inflammatory factors, such as TNF-α, IL-1α, IL-1β, and IL-18. Astrocyte pyroptosis caused endothelial cell dysfunction and release of large amounts of vasoconstrictors (ET and vWF). Knockdown of GSDMD reduced astrocyte pyroptosis in the cerebral cortex and hippocampal tissue, decreased the release of inflammatory factors IL-1 β and IL-18, reduced Aβ deposition and tau protein, increased the release of peripheral vasodilator substances (eNOS), and decreased the release of vasoconstrictor substances (ET, vWF), thereby reducing brain tissue damage and vascular injury in APP/PS1 mice. CONCLUSION Aβ42 induced astrocyte pyroptosis, while GSDMD knockout inhibited astrocyte pyroptosis, reduced the release of inflammatory factors, and alleviated brain tissue damage and vascular damage in APP/PS1 mice. Therefore, GSDMD is a novel therapeutic target for Alzheimer's disease. PURPOSE The study aimed to investigate whether astrocyte pyroptosis, and the subsequent neuroinflammatory response that exerts amyloid β (Aβ) neurotoxic effects, has an effect on endothelial cells, along with the underlying mechanisms. METHODS In vivo, 5 μL of disease venom was injected into the lateral ventricle of APP/PS1 mice for treatment. Pyroptosis was induced by treating astrocytes with Aβ42 in vitro. Small interfering RNA (siRNA) was used to silence caspase-1 and Gasdermin D (GSDMD) mRNA expression. Cell viability was determined using a CCK-8 detection kit. Scanning electron microscopy (SEM), Annexin V/propidium iodide (PI) double staining, RT-qPCR, immunofluorescence, western blotting, and enzyme-linked immunosorbent assay (ELISA) were used to detect cell pyroptosis. The degree of pathological damage to the brain and aortic tissue was assessed by hematoxylin-eosin staining and immunohistochemistry. RESULTS Aβ42 induced astrocyte pyroptosis dependent on the GSDMD/Gasdermin E (GSDME)/Caspase 11/NLRP3 pathway, releasing large amounts of inflammatory factors, such as TNF-α, IL-1α, IL-1β, and IL-18. Astrocyte pyroptosis caused endothelial cell dysfunction and release of large amounts of vasoconstrictors (ET and vWF). Knockdown of GSDMD reduced astrocyte pyroptosis in the cerebral cortex and hippocampal tissue, decreased the release of inflammatory factors IL-1 β and IL-18, reduced Aβ deposition and tau protein, increased the release of peripheral vasodilator substances (eNOS), and decreased the release of vasoconstrictor substances (ET, vWF), thereby reducing brain tissue damage and vascular injury in APP/PS1 mice. CONCLUSION Aβ42 induced astrocyte pyroptosis, while GSDMD knockout inhibited astrocyte pyroptosis, reduced the release of inflammatory factors, and alleviated brain tissue damage and vascular damage in APP/PS1 mice. Therefore, GSDMD is a novel therapeutic target for Alzheimer's disease.
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Affiliation(s)
- Wenjuan Hong
- Department of Psychiatry, Shanghai Pudong New Area Mental Health Center, Tongji University School of Medicine, Shanghai 200124, China
| | - Chengping Hu
- Department of Psychiatry, Shanghai Pudong New Area Mental Health Center, Tongji University School of Medicine, Shanghai 200124, China
| | - Can Wang
- Department of Psychiatry, Shanghai Pudong New Area Mental Health Center, Tongji University School of Medicine, Shanghai 200124, China
| | - Binggen Zhu
- Department of Psychiatry, Shanghai Pudong New Area Mental Health Center, Tongji University School of Medicine, Shanghai 200124, China
| | - Ming Tian
- Department of Burn, Wound Healing Center, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200025, China
| | - Hongyun Qin
- Department of Psychiatry, Shanghai Pudong New Area Mental Health Center, Tongji University School of Medicine, Shanghai 200124, China
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Wang L, Zhang L, Cui LK, Yue X, Huang L, Liu N, Zhu MD, Wang ZB. MiR-590-3p Promotes the Phenotypic Switching of Vascular Smooth Muscle Cells by Targeting Lysyl Oxidase. J Cardiovasc Pharmacol 2023; 82:364-374. [PMID: 37678299 DOI: 10.1097/fjc.0000000000001483] [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] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 08/26/2023] [Indexed: 09/09/2023]
Abstract
ABSTRACT We investigated the clinical characteristics of patients with acute aortic dissection (AAD) and miR-590-3p levels in serum, tissue, and vascular smooth muscle cells. The effect of miR-590-3p on the vascular smooth muscle cell phenotype was assessed, and the regulation of lysyl oxidase by miR-5903p was determined. C57BL/6 mice were used to investigate the incidence of AAD and effects of miR-5903p on AAD. The miR-590-3p levels were measured in the aortae of mice, and hematoxylin and eosin staining and Masson staining were performed to identify the morphological features of the aorta. Comparative analysis revealed significant differences in clinical characteristics between patients with AAD and healthy control subjects, with most patients with AAD exhibiting concomitant hypertension and nearly 50% having atherosclerosis. Lysyl oxidase was a direct target of miR-590-3p. Lysyl oxidase overexpression inhibited switching of the vascular smooth muscle cell phenotype from contractile to synthetic, but miR-590-3p overexpression significantly reversed this change. In the mouse model, miR-590-3p upregulation increased the incidence of AAD to 93.3%, and its incidence decreased to 13.3% after miR-590-3p inhibition. Hematoxylin and eosin and Masson staining revealed that the miR-590-3p agomiR group had a greater loss of the contractile phenotype in the dissected aortic wall and an increased number of muscle fibers in the aortic wall, which contributed to thickening of the aortic wall and the formation of a false lumen in aortic dissection. miR-590-3p might be pivotal in the pathogenesis of AAD. Thus, targeting miR-590-3p or its downstream pathways could represent a therapeutic approach for AAD.
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Affiliation(s)
- Lei Wang
- Department of Emergency, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
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Zhao J, Ji H, Wang X, Wang Y, Xia Z. Association of Nonpuerperal Mastitis with Cytokines Related to Helper T Cells TH1/TH2 and TH17/Treg. Altern Ther Health Med 2023; 29:150-155. [PMID: 37535921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/05/2023]
Abstract
Objective To investigate the association of nonpuerperal mastitis with cytokines related to the helper T cells TH1/TH2 and TH17/Treg and associated immune balance. Methods From 2016 to 2021, we included 40 patients with non-puerperal mastitis who underwent surgery at China-Japan Friendship Hospital and compared them with 40 control patients with benign non-infectious breast disease. Hematoxylin-eosin staining detects inflammatory infiltrates of breast tissue. The expression of interferon γ and interleukin 4 in breast tissue was detected by immunofluorescence imaging, and the relative protein expression of TH1/TH2 and TH17/Treg cell-associated cytokines in CD4+ T cells was detected by western blotting. CD4+ T cells were isolated by fluorescence-activated cell sorting for detection of the relative protein expression of interferon γ and interleukin 4 in CD4+ T cells. Results Hematoxylin-eosin staining showed that the nonpuerperal mastitis group had significantly greater inflammatory infiltration than the control group. Immunofluorescence images showed the relative fluorescence intensity of interferon γ was significantly higher in the nonpuerperal mastitis group than in the control group (P < .001), but the relative fluorescence intensity of interleukin 4 did not significantly differ between the 2 groups (P = .0686). Western blotting revealed that the relative protein expression of interferon γ, interleukin 2, and interleukin 17 was significantly higher in the nonpuerperal mastitis group than in the control group (P < .001), but the relative protein expression of interleukin 4 (P = .0512), interleukin 10 (P = .3088), and transforming growth factor β (P = .0653) did not significantly differ between the 2 groups. Flow cytometry of isolated CD4+ T cells showed the relative protein expression of interferon γ was significantly higher in the nonpuerperal mastitis group than in the control group (P < .001), but the relative protein expression of interleukin 4 did not significantly differ between the 2 groups (P = .0680). Conclusion The expression of the TH1 cytokines interferon γ and interleukin 2 and the TH17 cytokine interleukin 17 was significantly higher in patients with nonpuerperal mastitis, while the TH2 cytokine interleukin 4 and the Treg cytokines interleukin 10 and transforming growth factor β were expressed at lower levels. This study provides new research ideas for the treatment of mastitis.
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Chen X, Yin J, Zhong Q, Wang K, Zhang X, Liang M, Lin Q, Wang H, Wang W, Wang L, Hu X, Bei W, Guo J. Fufang-zhenzhu-tiaozhi formula protects islet against injury and promotes β cell regeneration in diabetic mice. J Ethnopharmacol 2023; 301:115791. [PMID: 36240976 DOI: 10.1016/j.jep.2022.115791] [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] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Revised: 09/24/2022] [Accepted: 10/03/2022] [Indexed: 06/16/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Fufang-zhenzhu-tiaozhi formula (FTZ) is a patented preparation of traditional Chinese medicine that has been used to treat hyperglycemia and hyperlipidemia in the clinic for almost 10 years. Our previous study had demonstrated that FTZ can protect islet β cell injury in vitro. However, the efficacy of FTZ on β cell regeneration in vivo and the involved anti-diabetic mechanism remains unknown. AIM OF THE STUDY We aim to investigate the effects of FTZ as a good remedy for islet protection and β cell regeneration, and to reveal the underlying mechanism. MATERIALS AND METHODS C57BL/6 mice were fed with high-fat diet for 3 weeks and then intraperitoneally injected with streptozotocin (90 mg/kg/d × 1 d) to establish type 2 diabetes (T2D) models. Mice in each group were divided into three batches that sacrificed after 3, 7 and 28 days of FTZ administration. Body weight, blood glucose, and oral glucose tolerance test were measured at indicated time points. Fasting insulin was determined by enzyme-linked immunosorbent assay (ELISA) kit. Neonatal β cell was assessed by insulin & PCNA double immunofluorescence staining, and the underlying mechanisms related to β cell regeneration were further performed by hematoxylin-eosin staining, insulin & glucagon double immunofluorescence staining and Western blot. RESULTS FTZ and metformin can significantly help with the symptoms of DM, such as alleviating weight loss, reducing blood glucose, improving the level of insulin in vivo, and relieving insulin resistance, suggesting FTZ and metformin treatment maintained the normal morphological function of islet. Notably, β cell regeneration, which is indicated by insulin and PCNA double-positive cells, was promoted by FTZ, whereas few neonatal β cells were observed in metformin group. Hematoxylin-eosin staining, and its quantification results showed that FTZ effectively prevented the invasion of inflammatory cells into the islets in diabetic mice. Most β cells in the islets of diabetic model mice were devoid, and the islets were almost all α cells, while the diabetic mice administered FTZ could still maintain about half of the β cells in the islet. Furthermore, FTZ upregulated the expression of critical transcription factors during β cell development and maturation (such as PDX-1, MAFA and NGN3) in diabetic mice. CONCLUSIONS FTZ can alleviate diabetes symptoms and promote β cell regeneration in diabetic mice. Moreover, FTZ promotes β cell regeneration by preserving islet (resisting inflammatory cells invading islets), maintaining the number of β cells in islets, and increasing the expression of PDX-1, MAFA and NGN3.
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Affiliation(s)
- Xu Chen
- Key Laboratory of Glucolipid Metabolic Disorder of Ministry of Education, China; Key Unit of Modulating Liver to Treat Hyperlipemia SATCM (State Administration of Traditional Chinese Medicine), China; Guangdong Metabolic Disease Research Center of Integrated Chinese and Western Medicine, China; Guangdong TCM Key Laboratory for Metabolic Diseases, China; Chinese Medicine Institute, Guangdong Pharmaceutical University, Guangzhou, 510006, China.
| | - Jianying Yin
- Key Laboratory of Glucolipid Metabolic Disorder of Ministry of Education, China; Key Unit of Modulating Liver to Treat Hyperlipemia SATCM (State Administration of Traditional Chinese Medicine), China; Guangdong Metabolic Disease Research Center of Integrated Chinese and Western Medicine, China; Guangdong TCM Key Laboratory for Metabolic Diseases, China; Chinese Medicine Institute, Guangdong Pharmaceutical University, Guangzhou, 510006, China.
| | - Qin Zhong
- Key Laboratory of Glucolipid Metabolic Disorder of Ministry of Education, China; Key Unit of Modulating Liver to Treat Hyperlipemia SATCM (State Administration of Traditional Chinese Medicine), China; Guangdong Metabolic Disease Research Center of Integrated Chinese and Western Medicine, China; Guangdong TCM Key Laboratory for Metabolic Diseases, China; Chinese Medicine Institute, Guangdong Pharmaceutical University, Guangzhou, 510006, China.
| | - Ke Wang
- Key Laboratory of Glucolipid Metabolic Disorder of Ministry of Education, China; Key Unit of Modulating Liver to Treat Hyperlipemia SATCM (State Administration of Traditional Chinese Medicine), China; Guangdong Metabolic Disease Research Center of Integrated Chinese and Western Medicine, China; Guangdong TCM Key Laboratory for Metabolic Diseases, China; Chinese Medicine Institute, Guangdong Pharmaceutical University, Guangzhou, 510006, China.
| | - Xiaoyu Zhang
- Key Laboratory of Glucolipid Metabolic Disorder of Ministry of Education, China; Key Unit of Modulating Liver to Treat Hyperlipemia SATCM (State Administration of Traditional Chinese Medicine), China; Guangdong Metabolic Disease Research Center of Integrated Chinese and Western Medicine, China; Guangdong TCM Key Laboratory for Metabolic Diseases, China; Chinese Medicine Institute, Guangdong Pharmaceutical University, Guangzhou, 510006, China.
| | - Mingjie Liang
- Key Laboratory of Glucolipid Metabolic Disorder of Ministry of Education, China; Key Unit of Modulating Liver to Treat Hyperlipemia SATCM (State Administration of Traditional Chinese Medicine), China; Guangdong Metabolic Disease Research Center of Integrated Chinese and Western Medicine, China; Guangdong TCM Key Laboratory for Metabolic Diseases, China; Chinese Medicine Institute, Guangdong Pharmaceutical University, Guangzhou, 510006, China.
| | - Quanyou Lin
- Key Laboratory of Glucolipid Metabolic Disorder of Ministry of Education, China; Key Unit of Modulating Liver to Treat Hyperlipemia SATCM (State Administration of Traditional Chinese Medicine), China; Guangdong Metabolic Disease Research Center of Integrated Chinese and Western Medicine, China; Guangdong TCM Key Laboratory for Metabolic Diseases, China; Chinese Medicine Institute, Guangdong Pharmaceutical University, Guangzhou, 510006, China.
| | - Hong Wang
- Key Laboratory of Glucolipid Metabolic Disorder of Ministry of Education, China; Key Unit of Modulating Liver to Treat Hyperlipemia SATCM (State Administration of Traditional Chinese Medicine), China; Guangdong Metabolic Disease Research Center of Integrated Chinese and Western Medicine, China; Guangdong TCM Key Laboratory for Metabolic Diseases, China; Chinese Medicine Institute, Guangdong Pharmaceutical University, Guangzhou, 510006, China.
| | - Weixuan Wang
- Key Laboratory of Glucolipid Metabolic Disorder of Ministry of Education, China; Key Unit of Modulating Liver to Treat Hyperlipemia SATCM (State Administration of Traditional Chinese Medicine), China; Guangdong Metabolic Disease Research Center of Integrated Chinese and Western Medicine, China; Guangdong TCM Key Laboratory for Metabolic Diseases, China; Chinese Medicine Institute, Guangdong Pharmaceutical University, Guangzhou, 510006, China.
| | - Lexun Wang
- Key Laboratory of Glucolipid Metabolic Disorder of Ministry of Education, China; Key Unit of Modulating Liver to Treat Hyperlipemia SATCM (State Administration of Traditional Chinese Medicine), China; Guangdong Metabolic Disease Research Center of Integrated Chinese and Western Medicine, China; Guangdong TCM Key Laboratory for Metabolic Diseases, China; Chinese Medicine Institute, Guangdong Pharmaceutical University, Guangzhou, 510006, China.
| | - Xuguang Hu
- Key Laboratory of Glucolipid Metabolic Disorder of Ministry of Education, China; Key Unit of Modulating Liver to Treat Hyperlipemia SATCM (State Administration of Traditional Chinese Medicine), China; Guangdong Metabolic Disease Research Center of Integrated Chinese and Western Medicine, China; Guangdong TCM Key Laboratory for Metabolic Diseases, China; Chinese Medicine Institute, Guangdong Pharmaceutical University, Guangzhou, 510006, China.
| | - Weijian Bei
- Key Laboratory of Glucolipid Metabolic Disorder of Ministry of Education, China; Key Unit of Modulating Liver to Treat Hyperlipemia SATCM (State Administration of Traditional Chinese Medicine), China; Guangdong Metabolic Disease Research Center of Integrated Chinese and Western Medicine, China; Guangdong TCM Key Laboratory for Metabolic Diseases, China; Chinese Medicine Institute, Guangdong Pharmaceutical University, Guangzhou, 510006, China.
| | - Jiao Guo
- Key Laboratory of Glucolipid Metabolic Disorder of Ministry of Education, China; Key Unit of Modulating Liver to Treat Hyperlipemia SATCM (State Administration of Traditional Chinese Medicine), China; Guangdong Metabolic Disease Research Center of Integrated Chinese and Western Medicine, China; Guangdong TCM Key Laboratory for Metabolic Diseases, China; Chinese Medicine Institute, Guangdong Pharmaceutical University, Guangzhou, 510006, China.
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Zargani M, Rahimi A, Mazaheri Tirani Z, Arabzadeh E, Feizolahi F. Swimming exercise and nano-l-arginine supplementation improve oxidative capacity and some autophagy-related genes in the soleus muscle of aging rats. Gene 2023; 850:146955. [PMID: 36220447 DOI: 10.1016/j.gene.2022.146955] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 09/04/2022] [Accepted: 10/03/2022] [Indexed: 01/04/2023]
Abstract
The present research aims to evaluate the effect of swimming exercise and chitosan-coated l-arginine on mitochondrial oxidation, BCL2 Interacting Protein 3 (Bnip3), NIP-like protein × (Nix), B-cell lymphoma-extra-large (Bcl-xL) and autophagy-related protein light chain 3(LC3) expression in soleus muscle of aging rats. In this experimental research, 25 male Wistar rats were assigned into five groups randomly: young, old, old + Nano l-arginine (Nano L-a), old + exercise (Ex), and old + Nano l-arginine (Nano L-a) + exercise (Ex) (n = 5 in each). They performed a swimming exercise program five days a week for six weeks. To determine the relative strength for rats before and after performing these interventions, the 1repetition maximum (1RM) test was done as a pre and post-test. The exercise program started with 20 min and after four sessions, gradually increased to 60 min and this time was maintained until the completion of the training period. l-arginine coated with chitosan nanoparticles was given to the rats in the l-arginine-supplemented group via gavage at a dosage of 500 mg/kg/day, five days a week, for six weeks. Additionally, the rats in all groups were fed a normal diet (2.87 kcal/g and 15 % energy from fat). Upon the completion of the protocol implementation, the rats were sacrificed and the soleus muscle was fixed and frozen to determine hematoxylin and eosin (H&E) staining, immunohistochemistry (IHC), gene expression analysis, levels of reactive oxygen species (ROS), and total antioxidant capacity (TAC). The results from the present research indicated that swimming exercise and Nano l-arginine improve the strength and histology of muscle tissue in old rats (p < 0.05). Aging significantly increased the expression of Nix and Bnip3 (p < 0.05) and reduced the Bcl-xL gene expression (p < 0.05). The expression of LC3 protein also increased with aging (p < 0.05). Therapeutic interventions, such as combined treatment (old + Nano L-a + Ex) for old animals, reduced the amount of this protein in soleus muscle (p < 0.05). The ROS values also showed a significant reduction only in the old + Nano L-a + Ex group compared to the old group. Moreover, TAC values show a significant decrease in the old and old + Ex groups in comparison to the young group. The use of arginine supplement, especially in nano form, along with swimming exercise seems to reduce the oxidative damage to the elderly muscle tissue, which has a positive effect on the structure and function of the soleus muscle. Since these interventions only had a significant effect on LC3 protein, further studies with more diverse measurement methods for autophagy are suggested.
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Affiliation(s)
- Mehdi Zargani
- Department of Exercise Physiology, Karaj Branch, Islamic Azad University, Karaj, Iran
| | - Alireza Rahimi
- Department of Exercise Physiology, Karaj Branch, Islamic Azad University, Karaj, Iran
| | | | - Ehsan Arabzadeh
- Exercise Physiology Research Center, Life Style Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Foad Feizolahi
- Clinical Care and Health Promotion Research Center, Karaj Branch, Islamic Azad University, Karaj, Iran.
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8
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Dai Y, Lu Q, Li P, Zhu J, Jiang J, Zhao T, Hu Y, Ding K, Zhao M. Xianglian Pill attenuates ulcerative colitis through TLR4/MyD88/NF-κB signaling pathway. J Ethnopharmacol 2023; 300:115690. [PMID: 36075274 DOI: 10.1016/j.jep.2022.115690] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Revised: 08/21/2022] [Accepted: 08/30/2022] [Indexed: 06/15/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Xianglian Pill (XLP) is a classical Chinese medicine prescription applied for controlling ulcerative colitis (UC). Whereas, the underlying mechanism remains unclear. AIM OF THE STUDY The present work was aimed to investigate the mechanism of XLP in dextran sulfate sodium (DSS)-induced UC via the Toll Like Receptor 4 (TLR4)/Myeloid Differentiation factor 88 (MyD88)/Nuclear Factor kappa-B (NF-κB) signaling in mice. MATERIALS AND METHODS The major components of XLP were detected by high-performance liquid chromatography-diode array detection (HPLC-DAD). The ulcerative colitis model was induced by DSS in mice. 5-Amino Salicylic Acid (5-ASA) group and XLP group were intragastrically treated. Disease activity index (DAI) and colon length were monitored and hematoxylin-eosin (HE) staining was conducted. Gasdermin D (GSDMD)-N and TLR4 expressions in colon tissues were visualized by immunofluorescence. TLR4 mRNA was measured by Real Time Quantitative PCR (RT-qPCR). The expressions of NOD-like receptor thermal protein domain associated protein 3 (NLRP3), active-caspase-1, GSDMD-N, TLR4, MYD88, NF-κB, p-NF-κB, and the ubiquitination of TLR4 in colon tissues were detected by Western blot. Myeloperoxidase (MPO) enzyme activity was examined and serum inflammatory factors Interleukin (IL)-1β, IL-6, Tumor Necrosis Factor-α (TNF-α), and IL-18 were determined by Enzyme-linked Immunosorbent Assay (ELISA). TLR4-/- mice were applied for verifying the mechanism of XLP attenuated DSS symptoms. RESULTS The XLP treatment extended colon length, reduced DAI, and attenuated histopathological alteration in DSS-induced mice. XLP administration suppressed MPO activity and reduced the content of IL-1β, IL-6, TNF-α and IL-18 in serum. XLP also inhibited the expression levels of GSDMD-N, TLR4, NLRP3, active-caspase-1, MyD88, p-NF-κB/NF-κB in colon tissues of DSS-induced mice. TLR4-/- mice proved that TLR4 was involved in XLP-mediated beneficial effect on DSS-induced ulcerative colitis. CONCLUSIONS XLP might treat ulcerative colitis by regulating the TLR4/MyD88/NF-κB signaling pathway.
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Affiliation(s)
- Yuxin Dai
- School of Chinese Medicine, School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China; The First School of Clinical Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Qiulu Lu
- Department of Colorectal Surgery, Kunshan Hospital of Traditional Chinese Medicine, Suzhou, 215300, China
| | - Peiyi Li
- School of Chinese Medicine, School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China; The First School of Clinical Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Junyu Zhu
- School of Chinese Medicine, School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Jiaxin Jiang
- School of Chinese Medicine, School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Tong Zhao
- School of Chinese Medicine, School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Yue Hu
- School of Chinese Medicine, School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Kang Ding
- Department of Colorectal Surgery, Suqian Hospital of Traditional Chinese Medicine, Suqian, 223801, China
| | - Min Zhao
- School of Chinese Medicine, School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China.
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9
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Chen Z, Gu J, Lin S, Xu Z, Xu H, Zhao J, Feng P, Tao Y, Chen S, Wang P. Saffron essential oil ameliorates CUMS-induced depression-like behavior in mice via the MAPK-CREB1-BDNF signaling pathway. J Ethnopharmacol 2023; 300:115719. [PMID: 36126781 DOI: 10.1016/j.jep.2022.115719] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 08/29/2022] [Accepted: 09/08/2022] [Indexed: 06/15/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Saffron, the dried stigma of Crocus sativus L., has a long history of use in the treatment of depression in traditional Chinese medicine and Islamic medicine. The unique aroma of saffron, primarily derived from its volatile oil, has been widely used by folk to mitigate anxiety and depression via sniffing because the aroma of saffron has a pleasant and invigorating effect. AIM OF THE STUDY This study aimed to investigate the antidepressant effect and the underlying mechanism of saffron essential oil (SEO) in mice exposed to chronic unpredictable mild stress (CUMS). MATERIALS AND METHODS In this study, compounds of SEO were identified using gas chromatography-mass spectrometry analysis, while network pharmacology was used to predict potential active compounds, antidepressant targets, and related signaling pathways of SEO. The CUMS depression model was further used to explore the therapeutic effect and possible mechanism of SEO. During the modeling period, mice were regularly administered fluoxetine (3.6 mg/kg, i.g.) or diluted SEO (2%, 4%, and 6% SEO, inhalation). The antidepressant and neuroprotective effects of SEO were evaluated by behavior tests (the open field test, the sucrose preference test, the tail suspension test, and the forced swimming test), hematoxylin-eosin staining, and Nissl staining. The enzyme-linked immunosorbent assay kits were used to measure dopamine (DA), 5-serotonin (5-HT), brain-derived neurotrophic factor (BDNF), and γ-aminobutyric acid (GABA) levels in serum. The relative abundance of Raf1, MEK1, P-ERK1/2/ERK1/2, P-CREB1/CREB1, BDNF, and P-Trk B/Trk B in the hippocampus was determined using western blot (WB). RESULTS According to the network pharmacology analysis, seven active SEO compounds mediated 113 targets related to depression treatment, most of which were enriched in the 5-HT synapse, calcium signaling pathway, and cAMP signaling pathway. In vivo experiments indicated that fluoxetine and SEO improved depression-like behaviors in depressed mice. The levels of 5-HT, DA, BDNF, and GABA in serum increased significantly. Histopathological examinations revealed that fluoxetine and SEO ameliorated neuronal damage in the hippocampus. WB analysis showed that the relative expressions of Raf1, MEK1, P-ERK1/2/ERK1/2, P-CREB1/CREB1, BDNF, and P-Trk B/Trk B were significantly higher in the fluoxetine and SEO groups than in the CUMS group. CONCLUSION Overall, these findings suggest that SEO significantly alleviates the depressive symptoms in CUMS exposed mice and partially restores hippocampal neuronal damage. Meanwhile, the best efficacy was observed in 4% SEO. Furthermore, the antidepressant mechanism of SEO is primarily dependent on the regulation of the MAPK-CREB1-BDNF signaling pathway.
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Affiliation(s)
- Ziwei Chen
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, 310014, People's Republic of China.
| | - Jinping Gu
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, 310014, People's Republic of China.
| | - Susu Lin
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, 310014, People's Republic of China; The First Hospital of Jiaxing, Jiaxing, 314001, People's Republic of China.
| | - Zijin Xu
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, 310014, People's Republic of China; College of Pharmacy, Jiangxi Medical College, Shangrao, Jiangxi, 334000, People's Republic of China.
| | - Hongyu Xu
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, 310014, People's Republic of China.
| | - Jiajing Zhao
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, 310014, People's Republic of China.
| | - Peishi Feng
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, 310014, People's Republic of China.
| | - Yi Tao
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, 310014, People's Republic of China.
| | - Suhong Chen
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, 310014, People's Republic of China.
| | - Ping Wang
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, 310014, People's Republic of China.
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10
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Chen J, Yuan S, Zhou J, Huang X, Wu W, Cao Y, Liu H, Hu Q, Li X, Guan X, Yin S, Jiang J, Zhou Y, Zhou J. Danshen injection induces autophagy in podocytes to alleviate nephrotic syndrome via the PI3K/AKT/mTOR pathway. Phytomedicine 2022; 107:154477. [PMID: 36215790 DOI: 10.1016/j.phymed.2022.154477] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 09/12/2022] [Accepted: 09/24/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Danshen injection (DSI) is an agent extracted from the Salvia miltiorrhiza Bunge, a natural drug commonly used to alleviate kidney diseases. However, the material basis and therapeutic effects of DSI on nephrotic syndrome (NS) remain unclear. PURPOSE To investigate the material basis of DSI and the therapeutic effects and underlying mechanisms of NS. METHODS NS models were established using adriamycin-induced BALB/c mice and lipopolysaccharide-induced mouse podocytes (MPC-5). Following DSI and prednisone administration, kidney coefficients, 24 h urine protein, blood urea nitrogen, and serum creatinine levels were tested. Histomorphology was observed by periodic acid-Schiff staining and hematoxylin and eosin staining of the kidney sections. The glomerular basement membrane and autophagosomes of the kidneys were observed using transmission electron microscopy. Nephrin and desmin levels in the glomeruli were tested using immunohistochemistry. The viability of MPC-5 cells was tested using cell counting kit-8 after chloroquine and rapamycin administration in combination with DSI. The in vivo and in vitro protein levels of phosphatidylinositol 3-kinase (PI3K), AKT, phosphorylated AKT (Ser473), mammalian target of rapamycin (mTOR), microtubule-associated protein light chain 3 (LC3), beclin1, cleaved caspase-3, and caspase-3 were detected using western blotting. RESULTS Our results showed that DSI contained nine main components: caffeic acid, danshensu, lithospermic acid, rosmarinic acid, salvianolic acid A, salvianolic acid B, salvianolic acid C, salvianolic acid D, and 3, 4-Dihydroxybenzaldehyde. In in vivo studies, the NS mice showed renal function and pathological impairment. Podocytes were damaged, with decreased levels of autophagy and apoptosis, accompanied by inhibition of the PI3K/AKT/mTOR signaling. DSI administration resulted in improved renal function and pathology in NS mice, with the activation of autophagy and PI3K/AKT/mTOR signaling in the kidneys. Additionally, podocytes were less damaged and intracellular autophagosomes were markedly increased. In vitro studies have shown that DSI activated MPC-5 autophagy and reduced apoptosis via the PI3K/AKT/mTOR pathway. CONCLUSION Collectively, this study demonstrated that DSI activated podocyte autophagy and reduced apoptosis via the PI3K/AKT/mTOR signaling, ultimately attenuating NS. Our study clarified the main components of DSI and elucidated its therapeutic effects and potential mechanisms for NS, providing new targets and agents for the clinical treatment of NS.
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Affiliation(s)
- Junqi Chen
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangdong, China
| | - Shengliang Yuan
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangdong, China
| | - Jie Zhou
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangdong, China
| | - Xiuye Huang
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangdong, China
| | - Wenjia Wu
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangdong, China
| | - Yiwen Cao
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangdong, China
| | - Hong Liu
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangdong, China
| | - Qinghong Hu
- The Second Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangdong, China
| | - Xiaojie Li
- The Second Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangdong, China
| | - Xueping Guan
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangdong, China
| | - Simin Yin
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangdong, China
| | - Jiaying Jiang
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangdong, China
| | - Yuan Zhou
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangdong, China.
| | - Jiuyao Zhou
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangdong, China.
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11
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Li N, Chen Z, Feng W, Gong Z, Lin C, Chen J, Chu C, Xu Q. Triptolide improves chondrocyte proliferation and secretion via down-regulation of miR-221 in synovial cell exosomes. Phytomedicine 2022; 107:154479. [PMID: 36194972 DOI: 10.1016/j.phymed.2022.154479] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 09/09/2022] [Accepted: 09/27/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Rheumatoid arthritis (RA), the most common type of inflammatory arthritis, can cause bone damage and disability. Triptolide, a prominent treatment for RA, has satisfactory anti-inflammatory effects. However, the mechanism of action of triptolide in RA remains unknown. PURPOSE This study aimed to explore the molecular mechanisms underlying triptolide-mediated improvements in RA and identify the miRNA pathway responsible for these effects. METHODS We identified various dysregulated miRNAs associated with RA by mining previously described microarray data and verified and screened these candidates using RT-qPCR. Hematoxylin-eosin staining was then applied to identify pathological changes in the affected joints, and cell counting kit-8 analysis and flow cytometry were employed to examine cell proliferation and apoptosis, respectively. Extracted exosomes were verified using transmission electron microscopy. RESULTS Our results revealed that the legs of rats with collagen-induced arthritis presented with obvious swelling and bone damage, a high degree of inflammatory cell infiltration into the synovium, and structural changes to the cartilage. Data mining identified 39 dysregulated miRNAs in these tissues, and RT-qPCR further refined these observations to highlight miR-221 as a potential RA biomarker. Subsequent evaluations revealed that fibroblast-like synovial (FLS) cells secrete Exs carrying dysregulated miR-221 in vitro. These Exs mediate miR-221 levels, inflammation, and TLR4/MyD88 signaling via their fusion with chondrocytes, leading to changes in chondrocyte growth and metabolic factor levels. Additionally, the addition of triptolide impaired miR-221 expression, cell proliferation, inflammatory factors, and the protein levels of TLR4/MyD88 in RA-FLS and promoted the apoptosis of FLS. The therapeutic effect of triptolide on miR-221 Exs was reversed by miR-221 inhibitor in both normal and RA FLS. CONCLUSION Our research shows that effective treatment with triptolide is mediated by its regulation of growth and secretory functions of chondrocytes via the inhibition of miR-221 secretion by FLS, providing a new target and natural medicinal candidate for future RA treatments.
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Affiliation(s)
- Nan Li
- Formula-Pattern Research Center, School of Traditional Chinese Medicine, Jinan University, 510632, Guangzhou, China
| | - Zhixin Chen
- Chinese Medicine Department, South China Agricultural University Hospital, 510642, Guangzhou, China
| | - Wei Feng
- Guangzhou University of Chinese Medicine, 510405, Guangzhou, China
| | - Zhaohui Gong
- Guangzhou University of Chinese Medicine, 510405, Guangzhou, China; Department of Cardiovascular, the First Affiliated Hospital of Guangzhou University of Chinese Medicine, 510405, Guangzhou, China
| | - Changsong Lin
- Guangzhou University of Chinese Medicine, 510405, Guangzhou, China; Department of Rheumatology, the First Affiliated Hospital of Guangzhou University of Chinese Medicine, 510405, Guangzhou, China
| | - Jiaxu Chen
- Formula-Pattern Research Center, School of Traditional Chinese Medicine, Jinan University, 510632, Guangzhou, China.
| | - Congqiu Chu
- Oregon Health & Science University, 97239, Portland, OR, United States of America.
| | - Qiang Xu
- Guangzhou University of Chinese Medicine, 510405, Guangzhou, China; Department of Rheumatology, the First Affiliated Hospital of Guangzhou University of Chinese Medicine, 510405, Guangzhou, China.
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12
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He S, Zhou X, Yang G, Zhou Z, Zhang Y, Shao X, Liang T, Lv N, Chen J, Qian Z. Proteomic comparison between physiological degeneration and needle puncture model of disc generation disease. Eur Spine J 2022; 31:2920-2934. [PMID: 35842490 DOI: 10.1007/s00586-022-07284-x] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 04/20/2022] [Accepted: 05/31/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND The completeness of the intervertebral disc proteome is fundamental to the integrity and functionality of the intervertebral disc. METHODS The 20 experimental rats were placed into two groups randomly, normal group (NG) and acupuncture pathological degeneration group-2 weeks (APDG-2w). The ten 24-month-old rats were grouped into physiological degeneration group (PDG). Magnetic resonance imaging, X-ray examination, histological staining (hematoxylin & eosin, safranin-O cartilage, and alcian blue staining), and immunohistochemical examination were carried out for assessing the degree of disc degradation. Intervertebral disc was collected, and protein composition was determined by LC- MS, followed by bioinformatic analysis including significance analysis, subcellular localization prediction, protein domain prediction, GO function and KEGG pathway analysis, and protein interaction network construction. LC-PRM was done for protein quantification. RESULTS Physiological degeneration and especially needle puncture decreased T2 signal intensity and intervertebral disc height. Results from hematoxylin & eosin, safranin-O, and alcian blue staining revealed that the annulus fibrosus apparently showed the wavy and collapsed fibrocartilage lamellas in APDG-2w and PDG groups. The contents of the nucleus pulposus were decreased in physiological degeneration group and APDG-2w group compared with NG. Results from immunohistochemical analysis suggested the degeneration of intervertebral disc and inflammation in APDG-2w and PDG groups. The protein composition and expression between needle puncture rat models and the physiological degeneration group showed significant difference. CONCLUSIONS Our studies produced point-reference datasets of normal rats, physiological degeneration rats, and needle puncture rat models, which is beneficial to subsequent pathological studies. There is differential expression of protein expression in degenerative discs with aging and acupuncture, which may be used as a potential discriminating index for different intervertebral degenerations.
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Affiliation(s)
- Shuangjun He
- Department of Orthopedic Surgery, Affiliated Danyang Hospital of Nantong University, The People's Hospital of Danyang, Xinmin Road 2, Danyang, Zhenjiang, 212300, Jiangsu, China
- Department of Orthopedic Surgery, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, Jiangsu, China
| | - Xinfeng Zhou
- Department of Orthopedic Surgery, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, Jiangsu, China
| | - Guotao Yang
- Department of Orthopedic Surgery, Affiliated Danyang Hospital of Nantong University, The People's Hospital of Danyang, Xinmin Road 2, Danyang, Zhenjiang, 212300, Jiangsu, China
| | - Zhangzhe Zhou
- Department of Orthopedic Surgery, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, Jiangsu, China
| | - Yijian Zhang
- Department of Orthopedic Surgery, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, Jiangsu, China
| | - Xiaofeng Shao
- Department of Orthopedic Surgery, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, Jiangsu, China
| | - Ting Liang
- Department of Orthopedic Surgery, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, Jiangsu, China
| | - Nanning Lv
- Department of Orthopedic Surgery, The Second People's Hospital of Lianyungang, 41 Hailian Street, Lianyungang, Jiangsu, China.
| | - Jianhong Chen
- Department of Orthopedic Surgery, Affiliated Danyang Hospital of Nantong University, The People's Hospital of Danyang, Xinmin Road 2, Danyang, Zhenjiang, 212300, Jiangsu, China.
| | - Zhonglai Qian
- Department of Orthopedic Surgery, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, Jiangsu, China.
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张 京, 宋 佳, 王 振, 龚 玉, 王 天, 周 津, 战 军, 张 宏. [Kindlin-2 regulates endometrium development via mTOR and Hippo signaling pathways in mice]. Beijing Da Xue Xue Bao Yi Xue Ban 2022; 54:846-852. [PMID: 36241227 PMCID: PMC9568384 DOI: 10.19723/j.issn.1671-167x.2022.05.012] [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] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Indexed: 06/16/2023]
Abstract
OBJECTIVE To investigate the effects and mechanisms of Kindlin-2 on uterus development and reproductive capacity in female mice. METHODS Cdh16-Cre tool mice and Kindlin-2flox/flox mice were used to construct the mouse model of uterus specific knockout of Kindlin-2, and the effects of Kindlin-2 deletion on uterine development and reproduction capacity of female mice were observed. High expression and knockdown of Kindlin-2 in endometrial cancer cell lines HEC-1 and Ish were used to detect the regulation of mammalian target of rapamycin (mTOR) signaling pathway. In addition, uterine proteins of the female mice with specific knockout of Kindlin-2 and female mice in the control group were extracted to detect the protein levels of key molecules of mTOR signaling pathway and Hippo signaling pathway. RESULTS The mouse model of uterine specific knockout of Kindlin-2 was successfully constructed. The knockout efficiency of Kindlin-2 in mouse uterus was identified and verified by mouse tail polymerase chain reaction (PCR), Western blot protein identification, immunohistochemical staining (IHC) and other methods. Compared with the control group, the female mice with uterus specific deletion of Kindlin-2 lost weight, seriously impaired reproductive ability, and the number of newborn mice decreased, but the proportion of the female mice and male mice in the newborn mice did not change. Hematoxylin eosin staining (HE) experiment showed that the endometrium of Kindlin-2 knockout group was incomplete and the thickness of uterine wall became thinner. In terms of mechanism, the deletion of Kindlin-2 in endo-metrial cancer cell lines HEC-1 and Ish could downregulate the protein levels of mTOR, phosphorylated mTOR, adenosine monophosphate-activated protein kinase (AMPK), phosphorylated AMPK and phosphorylated ribosomal protein S6 (S6), and the mTOR signal pathway was inhibited. It was found that the specific deletion of Kindlin-2 could upregulate the protein levels of Mps one binding 1 (MOB1) and phosphorylated Yes-associated protein (YAP) in the uterus of the female mice, and the Hippo signal pathway was activated. CONCLUSION Kindlin-2 inhibits the development of uterus by inhibiting mTOR signal pathway and activating Hippo signal pathway, thereby inhibiting the fertility of female mice.
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Affiliation(s)
- 京 张
- 北京大学基础医学院人体解剖与组织胚胎学系,北京 100191Department of Human Anatomy, Histology and Embryology, Peking University School of Basic Medical Sciences, Beijing 100191, China
| | - 佳桂 宋
- 北京大学基础医学院人体解剖与组织胚胎学系,北京 100191Department of Human Anatomy, Histology and Embryology, Peking University School of Basic Medical Sciences, Beijing 100191, China
- 北京大学第三医院医学创新研究院基础医学研究中心,北京 100191Center of Basic Medical Research, Institute of Medical Innovation and Research, Cancer Center, Peking University Third Hospital, Beijing 100191, China
| | - 振斌 王
- 北京大学基础医学院人体解剖与组织胚胎学系,北京 100191Department of Human Anatomy, Histology and Embryology, Peking University School of Basic Medical Sciences, Beijing 100191, China
| | - 玉清 龚
- 北京大学基础医学院人体解剖与组织胚胎学系,北京 100191Department of Human Anatomy, Histology and Embryology, Peking University School of Basic Medical Sciences, Beijing 100191, China
| | - 天卓 王
- 北京大学基础医学院人体解剖与组织胚胎学系,北京 100191Department of Human Anatomy, Histology and Embryology, Peking University School of Basic Medical Sciences, Beijing 100191, China
| | - 津羽 周
- 北京大学基础医学院人体解剖与组织胚胎学系,北京 100191Department of Human Anatomy, Histology and Embryology, Peking University School of Basic Medical Sciences, Beijing 100191, China
| | - 军 战
- 北京大学基础医学院人体解剖与组织胚胎学系,北京 100191Department of Human Anatomy, Histology and Embryology, Peking University School of Basic Medical Sciences, Beijing 100191, China
| | - 宏权 张
- 北京大学基础医学院人体解剖与组织胚胎学系,北京 100191Department of Human Anatomy, Histology and Embryology, Peking University School of Basic Medical Sciences, Beijing 100191, China
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Meng XY, Lu QY, Zhang JF, Li JF, Shi MY, Huang SY, Yu SF, Zhao YM, Fan HJ. A novel animal model of primary blast lung injury and its pathological changes in mice. J Trauma Acute Care Surg 2022; 93:530-537. [PMID: 35261371 PMCID: PMC9488943 DOI: 10.1097/ta.0000000000003571] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 01/27/2022] [Accepted: 01/31/2022] [Indexed: 02/04/2023]
Abstract
BACKGROUND Primary blast lung injury (PBLI) is a major cause of death in military conflict and terrorist attacks on civilian populations. However, the mechanisms of PBLI are not well understood, and a standardized animal model is urgently needed. This study aimed to establish an animal model of PBLI for laboratory study. METHODS The animal model of PBLI was established using a self-made mini shock tube simulation device. In brief, mice were randomly divided into two groups: the control group and the model group, the model group were suffered 0.5 bar shock pressures. Mice were sacrificed at 2 hours, 4 hours, 6 hours, 12 hours, and 24 hours after injury. Lung tissue gross observation, hematoxylin and eosin staining and lung pathology scoring were performed to evaluated lung tissue damage. Evans blue dye leakage and bronchoalveolar lavage fluid examination were performed to evaluated pulmonary edema. The relative expression levels of inflammation factors were measured by real-time quantitative polymerase chain reaction and Western blotting analysis. The release of neutrophil extracellular traps was observed by immunofluorescence stain. RESULTS In the model group, the gross observation and hematoxylin and eosin staining assay showed the inflammatory cell infiltration, intra-alveolar hemorrhage, and damaged lung tissue structure. The Evans blue dye and bronchoalveolar lavage fluid examination revealed that the lung tissue permeability and edema was significantly increased after injury. Real-time quantitative polymerase chain reaction and Western blotting assays showed that IL-1β, IL-6, TNF-α were upregulated in the model group. Immunofluorescence assay showed that the level of neutrophil extracellular traps in the lung tissue increased significantly in the model group. CONCLUSION The self-made mini shock tube simulation device can be used to establish the animal model of PBLI successfully. Pathological changes of PBLI mice were characterized by mechanical damage and inflammatory response in lung tissue.
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Affiliation(s)
- Xiang-Yan Meng
- From the Institute of Disaster and Emergency Medicine (X.-Y.M., Q.-Y.L., J.-F.Z., J.-F.L., M.-Y.S., S.-Y.H., S.-F.Y., Y.-M.Z., H.-J.F.), Tianjin University; and Tianjin Key Laboratory of Disaster Medicine Technology (X.-Y.M., Q.-Y.L., J.-F.Z., J.-F.L., M.-Y.S., S.-Y.H., S.-F.Y., Y.-M.Z., H.-J.F.), Tianjin, China
| | - Qian-Ying Lu
- From the Institute of Disaster and Emergency Medicine (X.-Y.M., Q.-Y.L., J.-F.Z., J.-F.L., M.-Y.S., S.-Y.H., S.-F.Y., Y.-M.Z., H.-J.F.), Tianjin University; and Tianjin Key Laboratory of Disaster Medicine Technology (X.-Y.M., Q.-Y.L., J.-F.Z., J.-F.L., M.-Y.S., S.-Y.H., S.-F.Y., Y.-M.Z., H.-J.F.), Tianjin, China
| | - Jian-Feng Zhang
- From the Institute of Disaster and Emergency Medicine (X.-Y.M., Q.-Y.L., J.-F.Z., J.-F.L., M.-Y.S., S.-Y.H., S.-F.Y., Y.-M.Z., H.-J.F.), Tianjin University; and Tianjin Key Laboratory of Disaster Medicine Technology (X.-Y.M., Q.-Y.L., J.-F.Z., J.-F.L., M.-Y.S., S.-Y.H., S.-F.Y., Y.-M.Z., H.-J.F.), Tianjin, China
| | - Jun-Feng Li
- From the Institute of Disaster and Emergency Medicine (X.-Y.M., Q.-Y.L., J.-F.Z., J.-F.L., M.-Y.S., S.-Y.H., S.-F.Y., Y.-M.Z., H.-J.F.), Tianjin University; and Tianjin Key Laboratory of Disaster Medicine Technology (X.-Y.M., Q.-Y.L., J.-F.Z., J.-F.L., M.-Y.S., S.-Y.H., S.-F.Y., Y.-M.Z., H.-J.F.), Tianjin, China
| | - Ming-Yu Shi
- From the Institute of Disaster and Emergency Medicine (X.-Y.M., Q.-Y.L., J.-F.Z., J.-F.L., M.-Y.S., S.-Y.H., S.-F.Y., Y.-M.Z., H.-J.F.), Tianjin University; and Tianjin Key Laboratory of Disaster Medicine Technology (X.-Y.M., Q.-Y.L., J.-F.Z., J.-F.L., M.-Y.S., S.-Y.H., S.-F.Y., Y.-M.Z., H.-J.F.), Tianjin, China
| | - Si-Yu Huang
- From the Institute of Disaster and Emergency Medicine (X.-Y.M., Q.-Y.L., J.-F.Z., J.-F.L., M.-Y.S., S.-Y.H., S.-F.Y., Y.-M.Z., H.-J.F.), Tianjin University; and Tianjin Key Laboratory of Disaster Medicine Technology (X.-Y.M., Q.-Y.L., J.-F.Z., J.-F.L., M.-Y.S., S.-Y.H., S.-F.Y., Y.-M.Z., H.-J.F.), Tianjin, China
| | - Si-Fan Yu
- From the Institute of Disaster and Emergency Medicine (X.-Y.M., Q.-Y.L., J.-F.Z., J.-F.L., M.-Y.S., S.-Y.H., S.-F.Y., Y.-M.Z., H.-J.F.), Tianjin University; and Tianjin Key Laboratory of Disaster Medicine Technology (X.-Y.M., Q.-Y.L., J.-F.Z., J.-F.L., M.-Y.S., S.-Y.H., S.-F.Y., Y.-M.Z., H.-J.F.), Tianjin, China
| | - Yan-Mei Zhao
- From the Institute of Disaster and Emergency Medicine (X.-Y.M., Q.-Y.L., J.-F.Z., J.-F.L., M.-Y.S., S.-Y.H., S.-F.Y., Y.-M.Z., H.-J.F.), Tianjin University; and Tianjin Key Laboratory of Disaster Medicine Technology (X.-Y.M., Q.-Y.L., J.-F.Z., J.-F.L., M.-Y.S., S.-Y.H., S.-F.Y., Y.-M.Z., H.-J.F.), Tianjin, China
| | - Hao-Jun Fan
- From the Institute of Disaster and Emergency Medicine (X.-Y.M., Q.-Y.L., J.-F.Z., J.-F.L., M.-Y.S., S.-Y.H., S.-F.Y., Y.-M.Z., H.-J.F.), Tianjin University; and Tianjin Key Laboratory of Disaster Medicine Technology (X.-Y.M., Q.-Y.L., J.-F.Z., J.-F.L., M.-Y.S., S.-Y.H., S.-F.Y., Y.-M.Z., H.-J.F.), Tianjin, China
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Hou L, Fu Y, Zhao C, Fan L, Hu H, Yin S. Ciprofloxacin and enrofloxacin can cause reproductive toxicity via endocrine signaling pathways. Ecotoxicol Environ Saf 2022; 244:114049. [PMID: 36063617 DOI: 10.1016/j.ecoenv.2022.114049] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 08/16/2022] [Accepted: 08/30/2022] [Indexed: 06/15/2023]
Abstract
Ciprofloxacin (CIP) and enrofloxacin (ENR) are veterinary antibiotics commonly utilized to treat and prevent animal diseases. Environmental and dietary antibiotic residues can directly and indirectly affect the reproductive development of animals and humans. This article investigated the reproductive toxicity of CIP in male zebrafish, showing that it could decrease the spermatogonial weight and damage the spermatogonial tissue. The sex hormone assays showed that CIP decreased fshb and lhb gene expression and plasma testosterone (T). In addition, transcriptome analysis indicated that the effect of CIP on zebrafish might be related to the endocrine signaling pathways. ENR, which was selected for further study, inhibited mouse Leydig (TM3) and Sertoli (TM4) cell proliferation and caused cell cycle arrest. The sperm concentration, serum luteotropic hormone (LH) and follicle-stimulating hormone (FSH), and T levels decreased in adolescent mice after ENR treatment for 30d in vivo. Hematoxylin and eosin (H&E) staining showed that ENR exposure potentially induced testicular injury, while the real-time quantitative PCR (qPCR) results indicated that ENR inhibited the mRNA expression of key genes in the Leydig cells (cyp11a1, 3β-HSD, and 17β-HSD), Sertoli cells (Inhbβ and Gdnf) and spermatogenic cells (Plzf, Stra8 and Dmc1). In conclusion, these findings indicated that ENR exposure might influence the development of the testes of pubescent mice.
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Affiliation(s)
- Lirui Hou
- Department of Nutrition and Health, College of Food Science and Nutritional Engineering, China Agricultural University, 17 Qinghua East Road, Haidian District, Beijing 100083, China
| | - Yuhan Fu
- Department of Nutrition and Health, College of Food Science and Nutritional Engineering, China Agricultural University, 17 Qinghua East Road, Haidian District, Beijing 100083, China
| | - Chong Zhao
- Department of Nutrition and Health, College of Food Science and Nutritional Engineering, China Agricultural University, 17 Qinghua East Road, Haidian District, Beijing 100083, China
| | - Lihong Fan
- College of Veterinary Medicine, China Agricultural University, Yunamingyuan West Road, Haidian District, Beijing 100193, China
| | - Hongbo Hu
- Department of Nutrition and Health, College of Food Science and Nutritional Engineering, China Agricultural University, 17 Qinghua East Road, Haidian District, Beijing 100083, China
| | - Shutao Yin
- Department of Nutrition and Health, College of Food Science and Nutritional Engineering, China Agricultural University, 17 Qinghua East Road, Haidian District, Beijing 100083, China.
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16
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Qu MB, Guo XX, Kong L, Hou LJ, Yang Q. A midgut-specific lytic polysaccharide monooxygenase of Locusta migratoria is indispensable for the deconstruction of the peritrophic matrix. Insect Sci 2022; 29:1287-1298. [PMID: 35150068 DOI: 10.1111/1744-7917.13016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 01/25/2022] [Accepted: 01/28/2022] [Indexed: 06/14/2023]
Abstract
Lytic polysaccharide monooxygenases (LPMOs) are important enzymes that boost the hydrolysis of recalcitrant polysaccharides, such as chitin. They are found extensively in different insect species and are classified as auxiliary activities family 15 (AA15) LPMOs (LPMO15). Some of them were identified from the insect midgut and proven to act on chitin. However, knowledge about their physiological roles during insect growth and development remains limited. Here, we found that midgut-specific LPMO15s are widely distributed in different insect orders, such as the orthopteran Locusta migratoria and the lepidopteran Bombyx mori. Using L. migratoria as a model insect, the function of midgut-specific LmLPMO15-3 during development was investigated. Double-stranded RNA-mediated downregulation of LmLPMO15-3 expression at the 4th or 5th instar nymph stage severely decreased the survival rate and resulted in lethal phenotypes. Hematoxylin and eosin staining results indicated that the deficient individuals exhibited incompletely digested peritrophic matrix (PM), which suggested that LmLPMO15-3 is essential for the deconstruction of the PM during molting. This study provides direct evidence of the physiological importance of a midgut-specific LPMO15 during insect development. As L. migratoria is one of the most destructive agricultural pests, LmLPMO15-3 is a potential target for pest management.
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Affiliation(s)
- Ming-Bo Qu
- School of Bioengineering, Dalian University of Technology, Dalian, Liaoning Province, China
| | - Xiao-Xi Guo
- School of Bioengineering, Dalian University of Technology, Dalian, Liaoning Province, China
| | - Lin Kong
- School of Bioengineering, Dalian University of Technology, Dalian, Liaoning Province, China
| | - Ling-Jie Hou
- School of Bioengineering, Dalian University of Technology, Dalian, Liaoning Province, China
| | - Qing Yang
- School of Bioengineering, Dalian University of Technology, Dalian, Liaoning Province, China
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
- Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, Guangdong Province, China
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17
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Hosfield BD, Hunter CE, Li H, Drucker NA, Pecoraro AR, Manohar K, Shelley WC, Markel TA. A hydrogen-sulfide derivative of mesalamine reduces the severity of intestinal and lung injury in necrotizing enterocolitis through endothelial nitric oxide synthase. Am J Physiol Regul Integr Comp Physiol 2022; 323:R422-R431. [PMID: 35912999 PMCID: PMC9512109 DOI: 10.1152/ajpregu.00229.2021] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 06/18/2022] [Accepted: 07/19/2022] [Indexed: 11/22/2022]
Abstract
Necrotizing enterocolitis (NEC) remains a devastating disease that affects preterm infants. Hydrogen sulfide (H2S) donors have been shown to reduce the severity of NEC, but the optimal compound has yet to be identified. We hypothesized that oral H2S-Mesalamine (ATB-429) would improve outcomes in experimental NEC, and its benefits would be dependent on endothelial nitric oxide synthase (eNOS) pathways. NEC was induced in 5-day-old wild-type (WT) and eNOS knockout (eNOSKO) pups by formula feeding and stress. Four groups were studied in both WT and eNOSKO mice: 1) breastfed controls, 2) NEC, 3) NEC + 50 mg/kg mesalamine, and 4) NEC + 130 mg/kg ATB-429. Mesalamine and ATB-429 doses were equimolar. Pups were monitored for sickness scores and perfusion to the gut was measured by Laser Doppler Imaging (LDI). After euthanasia of the pups, intestine and lung were hematoxylin and eosin-stained and scored for injury in a blind fashion. TLR4 expression was quantified by Western blot and IL-6 expression by ELISA. P < 0.05 was significant. Both WT and eNOSKO breastfed controls underwent normal development and demonstrated milder intestinal and pulmonary injury compared with NEC groups. For the WT groups, ATB-429 significantly improved weight gain, reduced clinical sickness score, and improved perfusion compared with the NEC group. In addition, WT ATB-429 pups had a significantly milder intestinal and pulmonary histologic injury when compared with NEC. ATB-429 attenuated the increase in TLR4 and IL-6 expression in the intestine. When the experiment was repeated in eNOSKO pups, ATB-429 offered no benefit in weight gain, sickness scores, perfusion, intestinal injury, pulmonary injury, or decreasing intestinal inflammatory markers. An H2S derivative of mesalamine improves outcomes in experimental NEC. Protective effects appear to be mediated through eNOS. Further research is warranted to explore whether ATB-429 may be an effective oral therapy to combat NEC.
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Affiliation(s)
- Brian D Hosfield
- Department of Surgery, Indiana University School of Medicine, Indianapolis, Indiana
| | - Chelsea E Hunter
- Department of Surgery, Indiana University School of Medicine, Indianapolis, Indiana
| | - Hongge Li
- Department of Surgery, Indiana University School of Medicine, Indianapolis, Indiana
| | - Natalie A Drucker
- Department of Surgery, Indiana University School of Medicine, Indianapolis, Indiana
| | - Anthony R Pecoraro
- Department of Surgery, Indiana University School of Medicine, Indianapolis, Indiana
| | - Krishna Manohar
- Department of Surgery, Indiana University School of Medicine, Indianapolis, Indiana
| | | | - Troy A Markel
- Department of Surgery, Indiana University School of Medicine, Indianapolis, Indiana
- Riley Hospital for Children, Indiana University Health, Indianapolis, Indiana
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Wu C, Zheng T, Chen H, Zou P, Zhang M, Wang J, Li N, Zhang Y, Li Y, Dong Z. Effect and Mechanism of Pharmaceutical Excipients on Berberine to Alleviate Ulcerative Colitis via Regulating Gut Microbiota. Molecules 2022; 27:molecules27185997. [PMID: 36144733 PMCID: PMC9503871 DOI: 10.3390/molecules27185997] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 08/28/2022] [Accepted: 09/02/2022] [Indexed: 11/16/2022] Open
Abstract
Background: Various potential effect of drugs on alleviating diseases by regulating intestinal microbiome as well as the pharmaceutical excipients on gut microbiota has been revealed. However, the interaction between them is rarely investigated. Methods: Histological analysis, immunohistochemistry analysis, enzyme-linked immunosorbent assay (ELISA) analysis, RT-qPCR, and 16S rRNA analysis were utilized to explore the effect mechanism of the five excipients including hydroxypropyl methylcellulose (HPMC) F4M, Eudragit (EU) S100, chitosan (CT), pectin (PT), and rheum officinale polysaccharide (DHP) on berberine (BBR) to cure UC. Results: The combined BBR with PT and DHP group exhibited better therapeutic efficacy of UC with significantly increased colon length, and decreased hematoxylin-eosin (H&E) scores than other groups. Furthermore, the expression of tight junction ZO-1 and occludin in colon tissue were upregulated, and claudin-2 was downregulated. Ultimately, the serum content of tumor necrosis (TNF)-α, interleukin (IL)-1β, and IL-6 was decreased. Moreover, the combined BBR with PT significantly promoted the restoration of gut microbiota. The relative abundance of Firmicutes and Lactobacillus was significantly increased by the supplement of PT and DHP, and the relative abundance of Proteobacteria was downregulated. Conclusions: Our study may provide a new perspective that the selection of pharmaceutical excipients could be a crucial factor affecting the drugs’ therapeutic efficiency outcome.
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Affiliation(s)
- Chenyang Wu
- Drug Delivery Research Center, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China
| | - Tingting Zheng
- Drug Delivery Research Center, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China
| | - Huan Chen
- Drug Delivery Research Center, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China
- Department of Pharmacy, Faculty of Pharmacy, Hebei Medical University, Shijiazhuang 050017, China
| | - Peizhi Zou
- Drug Delivery Research Center, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China
| | - Mengxue Zhang
- Drug Delivery Research Center, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China
| | - Jinrui Wang
- Drug Delivery Research Center, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China
- Faculty of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin 150040, China
| | - Nan Li
- Drug Delivery Research Center, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China
| | - Yun Zhang
- Drug Delivery Research Center, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China
- Key Laboratory of New Drug Discovery Based on Classic Chinese Medicine Prescription, Chinese Academy of Medical Sciences, Beijing 100193, China
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China
| | - Ying Li
- Drug Delivery Research Center, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China
- Key Laboratory of New Drug Discovery Based on Classic Chinese Medicine Prescription, Chinese Academy of Medical Sciences, Beijing 100193, China
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China
- Correspondence: (Y.L.); (Z.D.)
| | - Zhengqi Dong
- Drug Delivery Research Center, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China
- Key Laboratory of New Drug Discovery Based on Classic Chinese Medicine Prescription, Chinese Academy of Medical Sciences, Beijing 100193, China
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China
- Correspondence: (Y.L.); (Z.D.)
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Tian P, Zhang W, Li KY, Li HW, Ma K, Han DE. [Effect of Rehmanniae Radix on depression-like behavior and hippocampal monoamine neurotransmitters of chronic unpredictable mild stress model rats]. Zhongguo Zhong Yao Za Zhi 2022; 47:4691-4697. [PMID: 36164876 DOI: 10.19540/j.cnki.cjcmm.20220421.401] [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] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
To investigate the effect of Rehmanniae Radix on depression-like behavior and monoamine neurotransmitters of chronic unpredictable mild stress(CUMS) model rats. CUMS combined with isolated feeding was used to induce the depression model of rats. The depression-like behavior of rats was evaluated by sucrose preference test, open field test, and forced swim test. Hematoxylin-Eosin(HE) staining was used to investigate the pathological changes of neurons in the CA1 and CA3 area of hippocampus. Ultra performance liquid chromatography-tandem mass spectrometry(UPLC-MS) was used to detect the contents of 5-hydroxytryptamine(5-HT), 5-hydroxyindoleacetic acid(5-HIAA), dopamine(DA), 3,4-dihydroxyphenylacetic acid(DOPAC), homovanillic acid(HVA), norepinephrine(NE), and 3-methoxy-4-hydroxyphenyl glycol(MHPG) in rats. Western blot was used to detect the protein expressions of tryptophan hydroxylase 2(TPH2), serotonin transporter(SERT), and monoamine oxidase A(MAO-A) in the hippocampus of rats. Compared with the normal group, depressive-like behavior of rats was obvious in the model group. The arrangements of neurons in the CA1 and CA3 area of hippocampus were loose and disorderly. The levels of 5-HT, 5-HIAA, and 5-HT/5-HIAA in the hippocampal area were decreased(P<0.01). The protein expression of TPH2 was decreased(P<0.01), but those of SERT and MAO-A were increased(P<0.01). In the Rehmanniae Radix groups with 1.8 g·kg~(-1) and 7.2 g·kg~(-1), the depression-like behavior of CUMS rats and pathological changes of neurons in CA1, CA3 area of hippocampus were improved. The protein expression of TPH2(P<0.05, P<0.01) was increased, and those of SERT and MAO-A were down-regulated(P<0.05, P<0.01). The levels of 5-HT, 5-HIAA, and 5-HT/5-HIAA in hippocampus were increased(P<0.05, P<0.01). The changes in DA, DOPAC, HVA, DA/(DOPAC +HVA), NE, DHPG, and NE/DHPG were not statistically significant. The results suggested that Rehmanniae Radix improved depression-like behavior of CUMS rats, and the mechanism might be related to the regulation of synthesis, transportation, and metabolism of 5-HT neurotransmitter in the hippocampus.
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Affiliation(s)
- Ping Tian
- Henan Academy of Chinese Medicine Zhengzhou 450004, China
| | - Wei Zhang
- Henan Academy of Chinese Medicine Zhengzhou 450004, China
| | - Kai-Yan Li
- Henan Academy of Chinese Medicine Zhengzhou 450004, China
| | - Hong-Wei Li
- School of Pharmacy, Henan University of Chinese Medicine Zhengzhou 450046, China
| | - Kai Ma
- Henan Academy of Chinese Medicine Zhengzhou 450004, China
| | - De-En Han
- School of Pharmacy, Henan University of Chinese Medicine Zhengzhou 450046, China
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Zheng L, Byadgi O, Rakhshaninejad M, Nauwynck H. Upregulation of torso-like protein (perforin) and granzymes B and G in non-adherent, lymphocyte-like haemocytes during a WSSV infection in shrimp. Fish Shellfish Immunol 2022; 128:676-683. [PMID: 35985630 DOI: 10.1016/j.fsi.2022.08.021] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 08/09/2022] [Accepted: 08/11/2022] [Indexed: 06/15/2023]
Abstract
Invertebrates only have an innate immunity in which haemocytes play an important role. In our lab, 5 subpopulations of haemocytes were identified in the past by an iodixanol density gradient: hyalinocytes, granulocytes, semi-granulocytes and two subpopulations of non-phagocytic cells. For the two latter subpopulations, the haemocytes have small cytoplasm rims, do not adhere to the bottom of plastic cell-culture grade wells and present folds in the nucleus. These characteristics are similar to those of mammalian lymphocytes. Therefore, they were designated lymphocyte-like haemocytes. Although little is known about their function, we hypothesize, based on their morphology, that they may have a cytotoxic activity. First, a fast isolation technique was developed to separate the non-adherent haemocytes from the adherent haemocytes. After 60 min incubation on cell culture plates, the non-adherent haemocytes were collected. The purity reached 93% as demonstrated by flow cytometry and light microscopy upon a Hematoxylin and Eosin (H&E) staining. Cytotoxicity by lymphocytes is mediated by molecules such as perforin and granzymes and therefore, we searched for their genes in the shrimp genome. Genes coding for a torso-like protein, granzyme B and granzyme G were identified. Primers were designed and RT-PCR/RT-qPCR assays were developed. The results demonstrated that torso-like protein, granzyme B and granzyme G were mainly expressed in non-adherent haemocytes. The shrimp torso-like protein gene was most related to that of the crab torso-like protein; granzyme B gene was most related to that of mouse granzyme B and granzyme G gene was most related to that of zebrafish granzyme G. In a 72-hour in vivo WSSV infection challenge, the mRNA expression of shrimp torso-like protein, granzyme B and granzyme G in haemocytes was increasing over time, which indicated that torso-like protein, granzyme B and granzyme G of shrimp haemocytes are involved in the immune response during a viral infection. In the future, antibodies will be raised against these proteins for more in-depth functional analyses.
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Affiliation(s)
- Liping Zheng
- Laboratory of Virology, Department of Translational Physiology, Infectiology and Public Health, Faculty of Veterinary Medicine, Ghent University, 9820 Merelbeke, Belgium.
| | - Omkar Byadgi
- International Program in Ornamental Fish Technology and Aquatic Animal Health, National Pingtung University of Science and Technology, 91201, Pingtung, Taiwan
| | - Mostafa Rakhshaninejad
- Laboratory of Virology, Department of Translational Physiology, Infectiology and Public Health, Faculty of Veterinary Medicine, Ghent University, 9820 Merelbeke, Belgium
| | - Hans Nauwynck
- Laboratory of Virology, Department of Translational Physiology, Infectiology and Public Health, Faculty of Veterinary Medicine, Ghent University, 9820 Merelbeke, Belgium
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Zhang L, Li D, Chang C, Sun Y. Myostatin/HIF2α-Mediated Ferroptosis is Involved in Skeletal Muscle Dysfunction in Chronic Obstructive Pulmonary Disease. Int J Chron Obstruct Pulmon Dis 2022; 17:2383-2399. [PMID: 36185172 PMCID: PMC9519128 DOI: 10.2147/copd.s377226] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [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: 06/03/2022] [Accepted: 09/12/2022] [Indexed: 11/23/2022] Open
Abstract
Objective Methods Results Conclusion
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Affiliation(s)
- Lijiao Zhang
- Department of Respiratory and Critical Care Medicine, Peking University Third Hospital, Beijing, 100191, People’s Republic of China
| | - Danyang Li
- Department of Respiratory and Critical Care Medicine, Peking University Third Hospital, Beijing, 100191, People’s Republic of China
| | - Chun Chang
- Department of Respiratory and Critical Care Medicine, Peking University Third Hospital, Beijing, 100191, People’s Republic of China
| | - Yongchang Sun
- Department of Respiratory and Critical Care Medicine, Peking University Third Hospital, Beijing, 100191, People’s Republic of China
- Correspondence: Yongchang Sun, Email
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Kizildağ S, Koç B, Kurt S, Hoşgörler F, Argon A, Ateş M, Kizildağ S, Uysal Harzadin N. Magnesium yields opposite effects on the nuclear and cytosolic cascades of apoptosis in different rat brain regions. Eur Rev Med Pharmacol Sci 2022; 26:6523-6535. [PMID: 36196701 DOI: 10.26355/eurrev_202209_29751] [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: 06/16/2023]
Abstract
OBJECTIVE Magnesium is considered as potential neuroprotective and therapeutic agent, but certain studies have provided evidence of its apoptotic effectiveness in neurons. We aimed to evaluate the possible apoptotic effects of long-term magnesium use in healthy adult rat brains. MATERIALS AND METHODS Magnesium citrate and magnesium glycinate compounds were administered orally to rats for 8 weeks (36 mg/kg). Expression levels of Bcl-2, Bax and Cyt-C genes were analyzed by real-time polymerase chain reactions (RT-PCR) in the prefrontal cortex, hippocampus and striatum regions. Bcl-2, Bax and CytC protein levels were measured using ELISA kits. Tissue sections were evaluated histopathologically with hematoxylin-eosin staining. RESULTS Compared to the control group, the magnesium-administered groups indicated gene expression reductions in almost all brain regions; pro-apoptotic Bax, anti-apoptotic Bcl-2 and Cyt-C gene expression levels were reduced. With magnesium, the Bcl-2 and Bax protein levels were increased. Bax/Bcl-2 gene and protein ratio were also increased in the striatum and hippocampus, whereas Cyt-C protein levels were decreased or did not change in the magnesium treated groups. There was no pathological finding in histological evaluation. CONCLUSIONS Long-term magnesium usage can promote apoptotic cascade in brain tissue by increasing Bax/Bcl-2 ratio. Cyt-C, a prominent factor processing caspase pathway, was decreased or unchanged. In addition, taking into account the histological evaluation, we supposed that the absence of Cyt-C in the cytosol can prevent the subsequent apoptotic pathway. Consequently, we obtained the findings of apoptotic initiation with magnesium in brain, but this cascade seems to be arrested at later stages.
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Affiliation(s)
- S Kizildağ
- College of Vocational School of Health Services, Dokuz Eylul University, Izmir, Turkey.
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Lu DX, Liu F, Wu H, Liu HX, Chen BY, Yan J, Lu Y, Sun ZG. Wumei pills attenuates 5-fluorouracil-induced intestinal mucositis through Toll-like receptor 4/myeloid differentiation factor 88/nuclear factor-κB pathway and microbiota regulation. World J Gastroenterol 2022; 28:4574-4599. [PMID: 36157934 PMCID: PMC9476879 DOI: 10.3748/wjg.v28.i32.4574] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 01/05/2022] [Accepted: 07/18/2022] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Radiotherapy and chemotherapy can kill tumor cells and improve the survival rate of cancer patients. However, they can also damage normal cells and cause serious intestinal toxicity, leading to gastrointestinal mucositis[1]. Traditional Chinese medicine is effective in improving the side effects of chemotherapy. Wumei pills (WMP) was originally documented in the Treatise on Exogenous Febrile Diseases. It has a significant effect on chronic diarrhea and other gastrointestinal diseases, but it is not clear whether it affects chemotherapy-induced intestinal mucositis (CIM).
AIM To explore the potential mechanism of WMP in the treatment of CIM through experimental research.
METHODS We used an intraperitoneal injection of 5-fluorouracil (5-Fu) to establish a CIM mouse model and an oral gavage of WMP decoction (11325 and 22650 mg/kg) to evaluate the efficacy of WMP in CIM. We evaluated the effect of WMP on CIM by observing the general conditions of the mice (body weight, food intake, spleen weight, diarrhea score, and hematoxylin and eosin stained tissues). The expression of tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), IL-1β, and myeloperoxidase (MPO), as well as the Toll-like receptor 4/myeloid differentiation factor 88/nuclear factor-κB (TLR4/MyD88/NF-κB) signaling pathway proteins and tight junction proteins (zonula occludens-1, claudin-1, E-cadherin, and mucin-2) was determined. Furthermore, intestinal permeability, intestinal flora, and the levels of short-chain fatty acids (SCFA) were also assessed.
RESULTS WMP effectively improved the body weight, spleen weight, food intake, diarrhea score, and inflammatory status of the mice with intestinal mucositis, which preliminarily confirmed the efficacy of WMP in CIM. Further experiments showed that in addition to reducing the levels of TNF-α, IL-1β, IL-6, and MPO and inhibiting the expression of the TLR4/MyD88/NF-κB pathway proteins, WMP also repaired the integrity of the mucosal barrier of mice, regulated the intestinal flora, and increased the levels of SCFA (such as butyric acid).
CONCLUSION WMP can play a therapeutic role in CIM by alleviating inflammation, restoring the mucosal barrier, and regulating gut microbiota.
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Affiliation(s)
- Dong-Xue Lu
- Department of Nutrition, Acupuncture and Moxibustion and Massage College & Health Preservation and Rehabilitation College, Nanjing University of Chinese Medicine, Nanjing 210023, Jiangsu Province, China
| | - Feng Liu
- Department of Orthopaedics, Nanjing Pukou District Chinese Medicine Hospital, Nanjing 210000, Jiangsu Province, China
| | - Hua Wu
- Department of Nutrition, Acupuncture and Moxibustion and Massage College & Health Preservation and Rehabilitation College, Nanjing University of Chinese Medicine, Nanjing 210023, Jiangsu Province, China
| | - Hai-Xia Liu
- Department of Oncology, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210000, Jiangsu Province, China
| | - Bing-Yu Chen
- Department of Geriatrics, The First Affiliated Hospital of Henan University of Traditional Chinese Medicine, Zhengzhou 451150, Henan Province, China
| | - Jing Yan
- Key Laboratory for Metabolic Diseases in Chinese Medicine, The First Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing 210023, Jiangsu Province, China
| | - Yin Lu
- Key Pharmacology Laboratory of Jiangsu Province, Nanjing University of Chinese Medicine, Nanjing 210023, Jiangsu Province, China
| | - Zhi-Guang Sun
- The First Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing 210023, Jiangsu Province, China
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Zhi W, Jiang S, Xu Z, An Y, Chen J, Li Y, Liu Y, Zhang H. Oxysophocarpine inhibits airway inflammation and mucus hypersecretion through JNK/AP-1 pathway in vivo and in vitro. Fitoterapia 2022; 162:105278. [PMID: 35970410 DOI: 10.1016/j.fitote.2022.105278] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 08/08/2022] [Accepted: 08/09/2022] [Indexed: 02/07/2023]
Abstract
Asthma is a high-incidence disease in the world. Oxysophocarpine (OSC), a quinolizidine alkaloid displays various pharmacological functions including anti-inflammation, neuroprotective, anti-virus and antioxidant. Here, we established mice and cell asthmatic model to explore the effects of OSC for asthma treatment. Mice were sensitized and challenged with ovalbumin (OVA) and treated with OSC before challenge. Enzyme-linked immuno sorbent assay (ELISA), hematoxylin and eosin (H&E), periodic acid-schiff (PAS), tolonium chloride staining and immunohistochemical assay were performed. OSC treatment inhibited inflammatory cell infiltration and mucus secretion in the airway, reduced IgE level in mouse serum and decreased IL-4, IL-5 production in bronchoalveolar lavage fluid (BALF). OSC also reduced the spleen index to regulate immune function. Meanwhile, NCI-H292 cells were induced by lipopolysaccharide (LPS) to simulate airway epithelial injury. OSC pretreatment decreased the IL-6 and IL-8 cytokine levels, mucin 5 AC expression, and mucin 5 AC mRNA level in the cell model. Further, OSC suppressed the phosphorylation of c-Jun N-terminal kinase (JNK), and activator protein 1 (AP-1, Fos and Jun). These findings revealed that OSC alleviated bronchial asthma associated with JNK/AP-1 signaling pathway.
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Affiliation(s)
- Wenbing Zhi
- Shaanxi Academy of Traditional Chinese Medicine (Shaanxi Traditional Chinese Medicine Hospital), Xi'an 710003, PR China
| | - Shengnan Jiang
- Shaanxi Academy of Traditional Chinese Medicine (Shaanxi Traditional Chinese Medicine Hospital), Xi'an 710003, PR China
| | - Zongren Xu
- Shaanxi Academy of Traditional Chinese Medicine (Shaanxi Traditional Chinese Medicine Hospital), Xi'an 710003, PR China
| | - Yuye An
- Pharmacy College, Shaanxi University of Chinese Medicine, Xianyang, Shaanxi, China
| | - Jing Chen
- Pharmacy College, Shaanxi University of Chinese Medicine, Xianyang, Shaanxi, China
| | - Ye Li
- Shaanxi Academy of Traditional Chinese Medicine (Shaanxi Traditional Chinese Medicine Hospital), Xi'an 710003, PR China; Pharmacy College, Shaanxi University of Chinese Medicine, Xianyang, Shaanxi, China
| | - Yang Liu
- Shaanxi Academy of Traditional Chinese Medicine (Shaanxi Traditional Chinese Medicine Hospital), Xi'an 710003, PR China.
| | - Hong Zhang
- Shaanxi Academy of Traditional Chinese Medicine (Shaanxi Traditional Chinese Medicine Hospital), Xi'an 710003, PR China; Pharmacy College, Shaanxi University of Chinese Medicine, Xianyang, Shaanxi, China.
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Li NY, Zhang WJ, Hu ZL. [Therapeutic effect of amniotic membrane-fibrin sealant cement on severe ocular surface alkali burn in rabbits]. Zhonghua Yan Ke Za Zhi 2022; 58:606-614. [PMID: 35959605 DOI: 10.3760/cma.j.cn112142-20220310-00103] [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: 06/15/2023]
Abstract
Objective To prepare a biologically active amniotic membrane powder and explore its preservation conditions, and to evaluate the efficacy of the amniotic membrane (AM)-fibrin sealant (FS) cement made from the amniotic powder on the rabbit severe ocular surface alkali burn model. Methods Experimental research. Fresh AM was air-dried, cooled with liquid nitrogen, ground into amniotic powder and sterilized by radiation. The expression of transformed growth factor, nerve growth factor receptor (NGFR), hepatocyte growth factor (HGF), epidermal growth factor (EGF) and basic fibroblast growth factor (bFGF) after preparation and 10, 20 and 30 days after storage at room temperature, 4 ℃ and -20 ℃ was tested and compared with that in the fresh AM. The AM-FS cement containing different concentrations of amniotic powder and no amniotic powder was diluted. Rabbit corneal epithelial cells were cultured for 72 hours. The effects of different concentrations of amniotic powder on epithelial cell growth were observed by light microscopy, and the amniotic powder concentration with the largest absorbance value at 450 nm was selected for subsequent animal experiments. Thirty-two right eyes of 32 rabbits as the severe ocular surface alkali burn model were divided using the random counting method into the AM-FS cement group, fresh AM transplantation group, FS group and antibiotic control group (8 rabbits each group) and given different interventions. After weekly observation of corneal repair, hematoxylin and eosin staining, immunohistochemical staining of monocyte chemotaxis protein 1 (MCP-1)and vascular endothelial growth factor (VEGF) were performed and detected by light microscopy at 28 days. The logFC values of the growth factor or receptor expression difference ratio were corrected by BH; the data were analyzed by t-test and analysis of variance. Results: The expression of TGF in the amniotic membrane powder compared with the fresh amniotic membrane group (logFC=-0.11), and the expression of NGFR (HGF, EGF, bFGF) was higher than that of the fresh amniotic membrane group (logFC=-2.07, 0.72, 0.46, 2.62; P<0.05); the expression of HGF, bFGF and EGF in amniotic membrane powder stored for 10 days and 20 days were no lower than fresh amniotic membrane; at 30 days, the expression of growth factors or receptors except HGF and bFGF were decreased, and HGF, bFGF and EGF were no less than 4 ℃ and -20 ℃.The maximum A value was obtained for 0.25 mg/ml of the amniotic membrane powder after 72 hours of the CEC culture 0.98±0.05. The corneal recovery was better in the AM-FS and fresh amniotic membrane transplant groups, with corneal turbidity scores of 3.75±0.46 and 3.50±0.46, respectively, on 28 days, lower than antibiotics (4.29±0.45) (t=2.480, 3.629; P=0.019, 0.001). The corneal neovascular area in the antibiotic control group was compared with the other three groups (t=4.040, 4.339, 2.820; all P<0.001); the corneal neovascular area in the AM-FS group was (9.88±0.20) and (18.96±0.18) mm2 at 7 and 28 days. The corneal neovascularization area at 7 and 28 days in the fresh AM group [(9.54±0.22) and (18.08±0.96) mm2] was smaller than the AM-FS group (t=3.085, 3.017, P=0.005, 0.005). Despite the tiny statistical difference (0.34, 0.88), there was no clinical difference. Hematoxylin and eosin staining showed corneal structures were intact in the AM-FS and fresh AM groups, the epithelial arrangement became normal, and the corneal healing was superior to the FS and antibiotic control groups. Immunohistochemistry showed that the positive expression of VEGF in the fresh AM group was weaker than that in the remaining three groups. MCP-1 was expressed to a similar extent in the AM-FS and fresh AM groups. Conclusions: The active cytokine had high expression and stable properties at room temperature. The AM-FS cement containing 0.25 mg/ml amniotic powder can promote the repair of corneal epithelium, reduce inflammatory reaction and corneal neovascularization after alkali burning in rabbit eyes.
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Affiliation(s)
- N Y Li
- The Second People Hospital of Yunnan Province, Yunnan Eye Hospital, Yunnan Institute of Ophthalmology, Yunnan Key Laboratory of Ophthalmic Disease Prevention and Treatment, Yunnan Clinical Medical Center for Ophthalmic Diseases, Yunnan Clinical Medical Research Center for Eye Diseases, Kunming 650021, China
| | - W J Zhang
- The Second People Hospital of Yunnan Province, Yunnan Eye Hospital, Yunnan Institute of Ophthalmology, Yunnan Key Laboratory of Ophthalmic Disease Prevention and Treatment, Yunnan Clinical Medical Center for Ophthalmic Diseases, Yunnan Clinical Medical Research Center for Eye Diseases, Kunming 650021, China
| | - Z L Hu
- The Second People Hospital of Yunnan Province, Yunnan Eye Hospital, Yunnan Institute of Ophthalmology, Yunnan Key Laboratory of Ophthalmic Disease Prevention and Treatment, Yunnan Clinical Medical Center for Ophthalmic Diseases, Yunnan Clinical Medical Research Center for Eye Diseases, Kunming 650021, China
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Xiao G, Yunhao Y, Dongmei L, Fang P, Zhixue Y, Zhengwei Z, Ao L, Chenglin T. Effect of manipulation on cartilage in rats with knee osteoarthritis based on the Rho-associated protein kinase/LIM kinase 1/Cofilin signaling pathways. J TRADIT CHIN MED 2022; 42:194-199. [PMID: 35473339 DOI: 10.19852/j.cnki.jtcm.20220311.005] [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: 06/14/2023]
Abstract
OBJECTIVE To investigate the effect of manipulation treatment on knee osteoarthritis rats and the effect on Rho-associated protein kinase (ROCK)/LIM-kinase1 (LIMK1)/Cofilin signaling pathway. METHOD Fifty Specific pathogen Free Sprague-Dawley rats were randomly divided into five groups ( = 8 each): blank group, model group, manipulation group, celecoxib group, and manipulation combined with celecoxib group (MC group). The osteoarthritis model was established by injecting 0.2 mL 4% papain into the articular disc of the rats. After successfully establishing the model, we treated the manipulation group with pushing manipulation using one-finger-meditation to the Neixiyan (EX-LE4), Waixiyan (EX-LE5), Xuehai (SP10), Liangqiu (ST34), and Zusanli (ST36) acupoints for 10 min each time. Also, the celecoxib group was gavaged with 24 mg•kg•d celecoxib, while the MC group was treated using both of these two methods. After four weeks, the cartilage of the right femur was removed for hematoxylin-eosin staining of the cartilage tissue. The expressions of interleukin-1β (IL-1β) and tumor necrosis factor-α (TNF-α) in serum were observed using the enzyme-linked immunosorbent assay. Besides, we detected the expressions of ROCK, LIMK1, Phospho-LIM-kinase1 (Phospho-LIMK1), Cofilin, and Phospho-Cofilin by Western blot. RESULTS Compared to the model group, the manipulation group, celecoxib group, and MC group all exhibited superior results concerning pathological morphologic changes of cartilage, as observed by hematoxylin-eosin staining and calculated using the Mankin score. Besides, in contrast to the blank group, the model group exhibited elevated serum levels of IL-1β and TNF-α ( 0.01), while the expression of ROCK, LIMK1, Phospho-LIMK1, Cofilin, and Phospho-Cofilin in cartilage were all higher ( 0.01). Also, the serum levels of IL-1β and TNF-α in each treatment group were lower (0.01) than in the model group. Moreover, there were lower expressions of ROCK, LIMK1, Phospho-LIMK1, Cofilin, and Phospho-Cofilin in cartilage in the manipulation group and the MC group (< 0.01). Compared with the model group, the expression of ROCK, LIMK1, Phospho-LIMK1, Cofilin, and Phospho-Cofilin in cartilage in the celecoxib group were not statistically different ( > 0.05). CONCLUSION In this study, we established that manipulation has a better curative effect than celecoxib. Manipulation inhibits the development of cytoskeleton damage in cartilage and slows articular degeneration by regulating the expression of related proteins in the cytoskeletal signaling pathway.
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Affiliation(s)
- Guo Xiao
- College of Traditional Chinese Medicine, Chongqing Medical University, Chongqing 400010
- China Beibei Traditional Chinese Medicine Hospital, Chongqing 400700, China
| | - Yang Yunhao
- College of Traditional Chinese Medicine, Chongqing Medical University, Chongqing 400010
- China Beibei Traditional Chinese Medicine Hospital, Chongqing 400700, China
| | - Liao Dongmei
- College of Traditional Chinese Medicine, Chongqing Medical University, Chongqing 400010
- China Beibei Traditional Chinese Medicine Hospital, Chongqing 400700, China
| | - Pang Fang
- College of Traditional Chinese Medicine, Chongqing Medical University, Chongqing 400010
- China Beibei Traditional Chinese Medicine Hospital, Chongqing 400700, China
| | - Yang Zhixue
- College of Traditional Chinese Medicine, Chongqing Medical University, Chongqing 400010
- China Beibei Traditional Chinese Medicine Hospital, Chongqing 400700, China
| | - Zhu Zhengwei
- College of Traditional Chinese Medicine, Chongqing Medical University, Chongqing 400010
- China Beibei Traditional Chinese Medicine Hospital, Chongqing 400700, China
| | - Luo Ao
- College of Traditional Chinese Medicine, Chongqing Medical University, Chongqing 400010
- China Beibei Traditional Chinese Medicine Hospital, Chongqing 400700, China
| | - Tang Chenglin
- College of Traditional Chinese Medicine, Chongqing Medical University, Chongqing 400010
- China Beibei Traditional Chinese Medicine Hospital, Chongqing 400700, China
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Restall BS, Haven NJM, Kedarisetti P, Martell MT, Cikaluk BD, Silverman S, Peiris L, Deschenes J, Zemp RJ. Virtual hematoxylin and eosin histopathology using simultaneous photoacoustic remote sensing and scattering microscopy. Opt Express 2021; 29:13864-13875. [PMID: 33985114 DOI: 10.1364/oe.423740] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 04/10/2021] [Indexed: 06/12/2023]
Abstract
Hematoxylin and eosin (H&E) staining is the gold standard for most histopathological diagnostics but requires lengthy processing times not suitable for point-of-care diagnosis. Here we demonstrate a 266-nm excitation ultraviolet photoacoustic remote sensing (UV-PARS) and 1310-nm microscopy system capable of virtual H&E 3D imaging of tissues. Virtual hematoxylin staining of nuclei is achieved with UV-PARS, while virtual eosin staining is achieved using the already implemented interrogation laser from UV-PARS for scattering contrast. We demonstrate the capabilities of this dual-contrast system for en-face planar and depth-resolved imaging of human tissue samples exhibiting high concordance with H&E staining procedures and confocal fluorescence microscopy. To our knowledge, this is the first microscopy approach capable of depth-resolved imaging of unstained thick tissues with virtual H&E contrast.
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Skrede OJ, De Raedt S, Kleppe A, Hveem TS, Liestøl K, Maddison J, Askautrud HA, Pradhan M, Nesheim JA, Albregtsen F, Farstad IN, Domingo E, Church DN, Nesbakken A, Shepherd NA, Tomlinson I, Kerr R, Novelli M, Kerr DJ, Danielsen HE. Deep learning for prediction of colorectal cancer outcome: a discovery and validation study. Lancet 2020; 395:350-360. [PMID: 32007170 DOI: 10.1016/s0140-6736(19)32998-8] [Citation(s) in RCA: 275] [Impact Index Per Article: 68.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2019] [Revised: 10/28/2019] [Accepted: 11/11/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND Improved markers of prognosis are needed to stratify patients with early-stage colorectal cancer to refine selection of adjuvant therapy. The aim of the present study was to develop a biomarker of patient outcome after primary colorectal cancer resection by directly analysing scanned conventional haematoxylin and eosin stained sections using deep learning. METHODS More than 12 000 000 image tiles from patients with a distinctly good or poor disease outcome from four cohorts were used to train a total of ten convolutional neural networks, purpose-built for classifying supersized heterogeneous images. A prognostic biomarker integrating the ten networks was determined using patients with a non-distinct outcome. The marker was tested on 920 patients with slides prepared in the UK, and then independently validated according to a predefined protocol in 1122 patients treated with single-agent capecitabine using slides prepared in Norway. All cohorts included only patients with resectable tumours, and a formalin-fixed, paraffin-embedded tumour tissue block available for analysis. The primary outcome was cancer-specific survival. FINDINGS 828 patients from four cohorts had a distinct outcome and were used as a training cohort to obtain clear ground truth. 1645 patients had a non-distinct outcome and were used for tuning. The biomarker provided a hazard ratio for poor versus good prognosis of 3·84 (95% CI 2·72-5·43; p<0·0001) in the primary analysis of the validation cohort, and 3·04 (2·07-4·47; p<0·0001) after adjusting for established prognostic markers significant in univariable analyses of the same cohort, which were pN stage, pT stage, lymphatic invasion, and venous vascular invasion. INTERPRETATION A clinically useful prognostic marker was developed using deep learning allied to digital scanning of conventional haematoxylin and eosin stained tumour tissue sections. The assay has been extensively evaluated in large, independent patient populations, correlates with and outperforms established molecular and morphological prognostic markers, and gives consistent results across tumour and nodal stage. The biomarker stratified stage II and III patients into sufficiently distinct prognostic groups that potentially could be used to guide selection of adjuvant treatment by avoiding therapy in very low risk groups and identifying patients who would benefit from more intensive treatment regimes. FUNDING The Research Council of Norway.
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Affiliation(s)
- Ole-Johan Skrede
- Institute for Cancer Genetics and Informatics, Oslo University Hospital, Oslo, Norway; Department of Informatics, University of Oslo, Oslo, Norway
| | - Sepp De Raedt
- Institute for Cancer Genetics and Informatics, Oslo University Hospital, Oslo, Norway; Department of Informatics, University of Oslo, Oslo, Norway
| | - Andreas Kleppe
- Institute for Cancer Genetics and Informatics, Oslo University Hospital, Oslo, Norway; Department of Informatics, University of Oslo, Oslo, Norway
| | - Tarjei S Hveem
- Institute for Cancer Genetics and Informatics, Oslo University Hospital, Oslo, Norway
| | - Knut Liestøl
- Institute for Cancer Genetics and Informatics, Oslo University Hospital, Oslo, Norway; Department of Informatics, University of Oslo, Oslo, Norway
| | - John Maddison
- Institute for Cancer Genetics and Informatics, Oslo University Hospital, Oslo, Norway
| | - Hanne A Askautrud
- Institute for Cancer Genetics and Informatics, Oslo University Hospital, Oslo, Norway
| | - Manohar Pradhan
- Institute for Cancer Genetics and Informatics, Oslo University Hospital, Oslo, Norway
| | - John Arne Nesheim
- Institute for Cancer Genetics and Informatics, Oslo University Hospital, Oslo, Norway
| | - Fritz Albregtsen
- Institute for Cancer Genetics and Informatics, Oslo University Hospital, Oslo, Norway; Department of Informatics, University of Oslo, Oslo, Norway
| | - Inger Nina Farstad
- Department of Pathology, Division of Laboratory Medicine, Oslo University Hospital, Oslo, Norway; Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Enric Domingo
- Department of Oncology, University of Oxford, Oxford, UK
| | - David N Church
- Wellcome Centre for Human Genetics, University of Oxford, Oxford, UK; National Institute of Health Research Oxford Biomedical Research Centre, Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital, Oxford, UK
| | - Arild Nesbakken
- Department of Gastrointestinal Surgery, Oslo University Hospital, Oslo, Norway; Institute of Clinical Medicine, University of Oslo, Oslo, Norway; KG Jebsen Colorectal Cancer Research Centre, Oslo, Norway
| | - Neil A Shepherd
- Gloucestershire Cellular Pathology Laboratory, Cheltenham General Hospital, Cheltenham, UK
| | - Ian Tomlinson
- Institute for Cancer Genetics and Informatics, Oslo University Hospital, Oslo, Norway; Edinburgh Cancer Research Centre, University of Edinburgh, Edinburgh, UK
| | - Rachel Kerr
- Department of Oncology, University of Oxford, Oxford, UK
| | - Marco Novelli
- Institute for Cancer Genetics and Informatics, Oslo University Hospital, Oslo, Norway; Department of Informatics, University of Oslo, Oslo, Norway; Research Department of Pathology, University College London Medical School, London, UK
| | - David J Kerr
- Nuffield Division of Clinical Laboratory Sciences, University of Oxford, Oxford, UK
| | - Håvard E Danielsen
- Institute for Cancer Genetics and Informatics, Oslo University Hospital, Oslo, Norway; Department of Informatics, University of Oslo, Oslo, Norway; Nuffield Division of Clinical Laboratory Sciences, University of Oxford, Oxford, UK.
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Gadan MA, Lloyd R, Saint Martin G, Olivera MS, Policastro L, Portu AM. Neutron Autoradiography Combined With UV-C Sensitization: Toward the Intracellular Localization of Boron. Microsc Microanal 2019; 25:1331-1340. [PMID: 31648656 DOI: 10.1017/s1431927619015058] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Our group has reported the imprint formation of biological material on polycarbonate nuclear track detectors by UV-C exposure, which is used as an approach to simultaneously visualize cell imprints and nuclear tracks coming from the boron neutron capture reaction. Considering that the cell nucleus has a higher UV-C absorption than the cytoplasm and that hematoxylin preferentially stains the nucleus, we proposed to enhance the contrast between these two main cell structures by hematoxylin staining before UV-C sensitization. In this study, several experiments were performed in order to optimize UV-C exposure parameters and chemical etching conditions for cell imprint formation using the SK-BR-3 breast cancer cell line. The proposed method improves significantly the resolution of the cell imprints. It allows clear differentiation of the nucleus from the rest of the cell, together with nuclear tracks pits. Moreover, it reduces considerably the UV-C exposure time, an important experimental issue. The proposed methodology can be applied to study the boron distribution independently from the chosen cell line and/or boron compounds.
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Affiliation(s)
- Mario A Gadan
- Department of Instrumentation and Dosimetry, National Atomic Energy Commission (CNEA), Av. General Paz 1499, B1650KNA, San Martín, Buenos Aires, Argentina
- Institute of Nanoscience and Nanotechnology (INN), Av. General Paz 1499, B1650KNA, San Martín, Buenos Aires, Argentina
| | - Rodrigo Lloyd
- Institute of Nanoscience and Nanotechnology (INN), Av. General Paz 1499, B1650KNA, San Martín, Buenos Aires, Argentina
- Laboratory of Nanomedicine, CNEA, Av. General Paz 1499, B1650KNA, San Martín, Buenos Aires, Argentina
- National Agency for Scientific and Technological Promotion (ANPCyT), Godoy Cruz 2270, C1425FQD, Ciudad Autónoma de Buenos Aires, Argentina
| | - Gisela Saint Martin
- Department of Radiobiology, CNEA, Av. General Paz 1499, B1650KNA, San Martín, Buenos Aires, Argentina
| | - María S Olivera
- Department of Boron Neutron Capture Therapy, CNEA, Av. General Paz 1499, B1650KNA, San Martín, Buenos Aires, Argentina
| | - Lucía Policastro
- Institute of Nanoscience and Nanotechnology (INN), Av. General Paz 1499, B1650KNA, San Martín, Buenos Aires, Argentina
- Laboratory of Nanomedicine, CNEA, Av. General Paz 1499, B1650KNA, San Martín, Buenos Aires, Argentina
- National Scientific and Technical Research Council (CONICET), Godoy Cruz 2270, C1425FQD, Ciudad Autónoma de Buenos Aires, Argentina
| | - Agustina M Portu
- Institute of Nanoscience and Nanotechnology (INN), Av. General Paz 1499, B1650KNA, San Martín, Buenos Aires, Argentina
- Department of Radiobiology, CNEA, Av. General Paz 1499, B1650KNA, San Martín, Buenos Aires, Argentina
- National Scientific and Technical Research Council (CONICET), Godoy Cruz 2270, C1425FQD, Ciudad Autónoma de Buenos Aires, Argentina
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Madrigal-Carrillo EA, Díaz-Tufinio CA, Santamaría-Suárez HA, Arciniega M, Torres-Larios A. A screening platform to monitor RNA processing and protein-RNA interactions in ribonuclease P uncovers a small molecule inhibitor. Nucleic Acids Res 2019; 47:6425-6438. [PMID: 30997498 PMCID: PMC6614837 DOI: 10.1093/nar/gkz285] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [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: 10/26/2018] [Revised: 04/08/2019] [Accepted: 04/10/2019] [Indexed: 01/10/2023] Open
Abstract
Ribonucleoprotein (RNP) complexes and RNA-processing enzymes are attractive targets for antibiotic development owing to their central roles in microbial physiology. For many of these complexes, comprehensive strategies to identify inhibitors are either lacking or suffer from substantial technical limitations. Here, we describe an activity-binding-structure platform for bacterial ribonuclease P (RNase P), an essential RNP ribozyme involved in 5' tRNA processing. A novel, real-time fluorescence-based assay was used to monitor RNase P activity and rapidly identify inhibitors using a mini-helix and a pre-tRNA-like bipartite substrate. Using the mini-helix substrate, we screened a library comprising 2560 compounds. Initial hits were then validated using pre-tRNA and the pre-tRNA-like substrate, which ultimately verified four compounds as inhibitors. Biolayer interferometry-based binding assays and molecular dynamics simulations were then used to characterize the interactions between each validated inhibitor and the P protein, P RNA and pre-tRNA. X-ray crystallographic studies subsequently elucidated the structure of the P protein bound to the most promising hit, purpurin, and revealed how this inhibitor adversely affects tRNA 5' leader binding. This integrated platform affords improved structure-function studies of RNA processing enzymes and facilitates the discovery of novel regulators or inhibitors.
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Affiliation(s)
- Ezequiel-Alejandro Madrigal-Carrillo
- Department of Biochemistry and Structural Biology, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Carlos-Alejandro Díaz-Tufinio
- Department of Biochemistry and Structural Biology, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico City, Mexico
- Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Mexico City, Mexico
| | - Hugo-Aníbal Santamaría-Suárez
- Department of Biochemistry and Structural Biology, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Marcelino Arciniega
- Department of Biochemistry and Structural Biology, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Alfredo Torres-Larios
- Department of Biochemistry and Structural Biology, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico City, Mexico
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Sun CK, Kao CT, Wei ML, Chia SH, Kärtner FX, Ivanov A, Liao YH. Slide-free imaging of hematoxylin-eosin stained whole-mount tissues using combined third-harmonic generation and three-photon fluorescence microscopy. J Biophotonics 2019; 12:e201800341. [PMID: 30636033 DOI: 10.1002/jbio.201800341] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 11/15/2018] [Accepted: 01/09/2019] [Indexed: 05/24/2023]
Abstract
Intraoperative margin assessment of surgical tissues during cancer surgery is clinically important, especially in the case of tissue conserving surgery like Mohs micrographic surgery in which minimization of the surgical area is considered crucial. Frozen pathology is the gold standard of assessing excised tissues for signs of remaining cancerous lesions. The current protocol, however, is time-consuming and labor-intensive. Instead of the complex frozen sectioning, staining, and traditional white light microscopy imaging protocol, optically sectioned histopathological imaging of hematoxylin-eosin stained whole-mount skin tissues with a subfemtoliter resolution is demonstrated by using nonlinear microscopy in this study. With our proposed method, the reagents of staining and the contrast of imaging are fully consistent with the current clinical standard of frozen pathology, thus facilitating rapid intraoperative assessment of surgical tissues for future applications. Image: Slide-free nonlinear microscopy imaging of H&E stained whole-mount skin tissue showing the morphology of sweat glands.
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Affiliation(s)
- Chi-Kuang Sun
- Graduate Institute of Photonics and Optoelectronics and Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan
- Molecular Imaging Center and Graduate Institute of Biomedical Electronics and Bioinformatics, National Taiwan University, Taipei, Taiwan
| | - Chien-Ting Kao
- Molecular Imaging Center and Graduate Institute of Biomedical Electronics and Bioinformatics, National Taiwan University, Taipei, Taiwan
| | - Ming-Liang Wei
- Graduate Institute of Photonics and Optoelectronics and Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan
- Molecular Imaging Center and Graduate Institute of Biomedical Electronics and Bioinformatics, National Taiwan University, Taipei, Taiwan
| | - Shih-Hsuan Chia
- Institute of Biophotonics, National Yang-Ming University, Taipei, Taiwan
- Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron, Hamburg, Germany
- Physics Department, University of Hamburg and the Hamburg Center for Ultrafast Imaging, Hamburg, Germany
| | - Franz X Kärtner
- Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron, Hamburg, Germany
- Physics Department, University of Hamburg and the Hamburg Center for Ultrafast Imaging, Hamburg, Germany
| | - Anatoly Ivanov
- Federal Scientific Research Center of Crystallography and Photonics, Russian Academy of Sciences, Moscow, Russia
| | - Yi-Hua Liao
- Department of Dermatology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
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Mehta A, Goswami M, Sinha R, Dogra A. Histopathological Significance and Prognostic Impact of Tumor Budding in Colorectal Cancer. Asian Pac J Cancer Prev 2018; 19:2447-2453. [PMID: 30255698 PMCID: PMC6249446 DOI: 10.22034/apjcp.2018.19.9.2447] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Accepted: 08/16/2018] [Indexed: 01/08/2023] Open
Abstract
Background: Colorectal cancer (CRC) is a heterogeneous disease with a complex etiology. New prognostic factors need to be investigated. Our present focus is on histopathological significance and prognostic impact of tumor budding in CRC. Material and Methods: A total of 60 treatment-naive consecutive patients undergoing surgical resection of CRCs during the period of January 2011 to December 2013 were included in the study. Details of each related to their demographic and tumor profile were recorded. Hematoxylin and Eosin (H and E) and pan-cytokeratin details of each “case” immunohistochemically stained sections were examined for tumor budding assessment along with clinical features. Results: The most frequent site of involvement was the rectosigmoid and sigmoid colon (31.6%). The majority of the cases were moderately differentiated (75%), showed tumor invasion into the pericolic/subserosal fat (66.6%) and stage III (38.3%). Nodal involvement was present in 47%. Correlations between tumor budding and nodal involvement (p-value 0.039) and AJCC stage (p-value 0.021) were found to be statistically significant. Conclusion: Tumor budding is a promising and powerful predictor of lymph nodal metastasis and a higher stage of tumor and can be used as a marker for high-risk CRC. Routine H and E staining aided by cytokeratin immunostaining allows reproducible grading of tumor budding in CRC cases.
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Affiliation(s)
- Anurag Mehta
- Department of Laboratory Services, Rajiv Gandhi Cancer Institute & Research Centre, Delhi, India
- Department of Research, Rajiv Gandhi Cancer Institute and Research Centre, Delhi, India.
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Yang Y, Xiao Y, Chang Y, Cui Y, Klobučar G, Li M. Intestinal damage, neurotoxicity and biochemical responses caused by tris (2-chloroethyl) phosphate and tricresyl phosphate on earthworm. Ecotoxicol Environ Saf 2018; 158:78-86. [PMID: 29660616 DOI: 10.1016/j.ecoenv.2018.04.012] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 04/04/2018] [Accepted: 04/06/2018] [Indexed: 06/08/2023]
Abstract
Organophosphate esters (OPEs) draw growing concern about characterizing the potential risk on environmental health due to its wide usage and distribution. Two typical types of organophosphate esters (OPEs): tris (2-chloroethyl) phosphate (TCEP) and tricresyl phosphate (TCP) were selected to evaluate toxicity of OPEs to the soil organism like earthworm (Eisenia fetida). Histopathological examination (H&E), oxidative stress, DNA damage and RT-qPCR was used to identify the effects and potential mechanism of their toxicity. Hameatoxylin and eosin (H&E) demonstrated that intestinal cells suffered serious damage, and the observed up-regulation of chitinase and cathepsin L in mRNA levels confirmed it. Both TCEP and TCP significantly increased the DNA damage when the concentrations exceeded 1 mg/kg (p < 0.01), and a dose-response relationship was observed. In addition, TCEP and TCP also changed the acetylcholinesterase (AChE) activity and expression of genes associated with neurotoxic effects in earthworms even under exposure to low OPEs concentration (0.1 mg/kg). Moreover, genes associated with nicotinic acetylcholine receptors (nAChR) and carrier protein further demonstrated that highest concentration of TCEP (10 mg/kg) may have an overloading impact on the cholinergic system of E. fetida. Integrated Biological Response index (IBRv2) showed that TCEP exerted stronger toxicity than TCP under the same concentrations. We deduced that the observed intestinal damage, oxidative stress and neurotoxic effect might be the primary mechanisms of TCEP and TCP toxicity. This study provides insight into the toxicological effects of OPEs on earthworm model, and may be useful for risk assessment of OPEs on soil ecosystems.
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Affiliation(s)
- Yang Yang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, PR China
| | - Yao Xiao
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, PR China
| | - Yeqian Chang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, PR China
| | - Yibin Cui
- Nanjing Institute of Environmental Sciences, Ministry of Environmental Protection, Nanjing 210042, PR China
| | - Göran Klobučar
- Faculty of Science, University of Zagreb, Department of Biology, Division of Zoology, Rooseveltov trg 6, 10000 Zagreb, Croatia
| | - Mei Li
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, PR China.
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Ban S, Min E, Ahn Y, Popescu G, Jung W. Effect of tissue staining in quantitative phase imaging. J Biophotonics 2018; 11:e201700402. [PMID: 29726110 DOI: 10.1002/jbio.201700402] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Accepted: 05/02/2018] [Indexed: 06/08/2023]
Abstract
Quantitative phase imaging (QPI) is an emerging modality, which enables the identification of abnormalities in tissue based on optical properties. QPI can be applied to any biological specimen due to its label-free imaging capability, but its use in stained tissue is unclear. Here, we study the variability of QPI with the staining dye. Several tissues such as brain, heart and lung were stained with hematoxylin and eosin, and their optical properties compared at 550 and 730 nm. Our results showed that phase and scattering coefficients varied when QPI was used at the absorption wavelength of the staining dye. We also found that the variation of optical properties was dependent on tissue morphology.
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Affiliation(s)
- Sungbea Ban
- Department of Biomedical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, Republic of Korea
| | - Eunjung Min
- Rowland Institute at Harvard University, Cambridge, Massachusetts
| | - Yujin Ahn
- Department of Biomedical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, Republic of Korea
| | - Gabriel Popescu
- Quantitative Light Imaging Laboratory, Department of Electrical and Computer Engineering, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Woonggyu Jung
- Department of Biomedical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, Republic of Korea
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Dreef HC, Van Esch E, De Rijk EPCT. Spermatogenesis in the Cynomolgus Monkey (Macaca fascicularis): A Practical Guide for Routine Morphological Staging. Toxicol Pathol 2016; 35:395-404. [PMID: 17455088 DOI: 10.1080/01926230701230346] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [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: 10/23/2022]
Abstract
The cynomolgus monkey ( Macaca fascicularis) is widely used in regulatory toxicity studies. Especially in studies on male contraception, the male reproductive tract can be an important target system. The aim of the present paper is to describe a practical approach for morphological staging of spermatogenesis in routinely prepared paraffin sections. Results obtained using this approach could help to determine possible drug-related effects on spermatogenesis. As a guide to the investigators, photomicrographs of Bouin-fixed, paraffin-embedded and H&E or PAS stained sections from testis tissue are presented to illustrate the twelve successive morphological stages (cell associations) of normal spermatogenesis. Sexually immature or peripubertal monkeys sometimes are included in toxicity studies. Since the morphological features of the testes of such monkeys can be mistaken for treatment-related abnormalities, the morphologic characteristics of these testes are described and discussed briefly.
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Affiliation(s)
- Henriette C Dreef
- Department of Toxicology and Drug Disposition, Organon, 5340 BH, Oss, The Netherlands
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Kuscu C, Kuscu C. Pyrosequencing Analysis for Breast Cancer DNA Methylome. Methods Mol Biol 2016; 1406:89-104. [PMID: 26820948 DOI: 10.1007/978-1-4939-3444-7_8] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Unraveling DNA methylation profile of tumor is important for the diagnosis and treatment of cancer patients. Because of the heterogeneity of clinical samples, it is very difficult to get methylation profile of only tumor cells. Laser capture Microdissection (LCM) is giving us a chance to isolate the DNA only from the tumor cells without any stroma cell's DNA contamination. Once we capture the breast tumor cells, we can isolate the genomic DNA which is followed by the bisulfite treatment in which unmethylated cytosines of the CG pairs are converted into uracil; however, methylated cytosine does not go into any chemical change during this reaction. Next, bisulfite treated DNA is used in the regular PCR reaction to get a single band PCR amplicon which will be used as a template for the pyrosequencing. Pyrosequencing is a powerful method to make a quantitative methylation analysis for each specific CG pair.
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Affiliation(s)
- Cem Kuscu
- Department of Biochemistry and Molecular Genetics, School of Medicine, University of Virginia, Charlottesville, VA, 800733, 22908, USA.
| | - Canan Kuscu
- Department of Biochemistry and Molecular Genetics, School of Medicine, University of Virginia, Charlottesville, VA, 800733, 22908, USA
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Kather JN, Weis CA, Marx A, Schuster AK, Schad LR, Zöllner FG. New Colors for Histology: Optimized Bivariate Color Maps Increase Perceptual Contrast in Histological Images. PLoS One 2015; 10:e0145572. [PMID: 26717571 PMCID: PMC4696851 DOI: 10.1371/journal.pone.0145572] [Citation(s) in RCA: 17] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Accepted: 12/04/2015] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Accurate evaluation of immunostained histological images is required for reproducible research in many different areas and forms the basis of many clinical decisions. The quality and efficiency of histopathological evaluation is limited by the information content of a histological image, which is primarily encoded as perceivable contrast differences between objects in the image. However, the colors of chromogen and counterstain used for histological samples are not always optimally distinguishable, even under optimal conditions. METHODS AND RESULTS In this study, we present a method to extract the bivariate color map inherent in a given histological image and to retrospectively optimize this color map. We use a novel, unsupervised approach based on color deconvolution and principal component analysis to show that the commonly used blue and brown color hues in Hematoxylin-3,3'-Diaminobenzidine (DAB) images are poorly suited for human observers. We then demonstrate that it is possible to construct improved color maps according to objective criteria and that these color maps can be used to digitally re-stain histological images. VALIDATION To validate whether this procedure improves distinguishability of objects and background in histological images, we re-stain phantom images and N = 596 large histological images of immunostained samples of human solid tumors. We show that perceptual contrast is improved by a factor of 2.56 in phantom images and up to a factor of 2.17 in sets of histological tumor images. CONTEXT Thus, we provide an objective and reliable approach to measure object distinguishability in a given histological image and to maximize visual information available to a human observer. This method could easily be incorporated in digital pathology image viewing systems to improve accuracy and efficiency in research and diagnostics.
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Affiliation(s)
- Jakob Nikolas Kather
- Institute of Pathology, University Medical Center Mannheim, University of Heidelberg, Mannheim, Germany
- Computer Assisted Clinical Medicine, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Cleo-Aron Weis
- Institute of Pathology, University Medical Center Mannheim, University of Heidelberg, Mannheim, Germany
| | - Alexander Marx
- Institute of Pathology, University Medical Center Mannheim, University of Heidelberg, Mannheim, Germany
| | | | - Lothar R. Schad
- Computer Assisted Clinical Medicine, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Frank Gerrit Zöllner
- Computer Assisted Clinical Medicine, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
- * E-mail:
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Alawa JN, Gideon GO, Adetiba B, Alawa CB. Comparative Tissue Stainability of Lawsonia inermis (Henna) and Eosin as Counterstains to Hematoxylin in Brain Tissues. Microsc Microanal 2015; 21:343-350. [PMID: 25772039 DOI: 10.1017/s1431927615000100] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We hyposthesized that henna staining could provide an alternative to eosin when used as a counterstain to hematoxylin for understanding basic neurohistological principles. Therefore, this study was aimed at investigating the suitability of henna as counterstain to hematoxylin for the demonstration of the layer stratification and cellular distribution in the brain tissue. Henna stained nervous tissue by reacting with the basic elements in proteins via its amino groups. It stained the neuropil and connective tissue membranes brown and effectively outlined the perikarya of neurons with no visible nuclei demonstrating that it is an acidic dye. Henna as a counterstain to hematoxylin demonstrated reliability as a new neurohistological stain. It facilitated identification of cortical layer stratification and cellular distribution in brain tissue sections from Wistar rats. This was comparable to standard hematoxylin and eosin staining as morphological and morphometrical analyses of stained cells did not show significant differences in size or number. This study presents a method for staining with henna and demonstrates that although henna and eosin belong to different dye groups (anthraquinone and xanthenes, respectively) based on their chromophores, they share similar staining techniques and thus could be used interchangeably in neurohistology.
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Affiliation(s)
- Judith N Alawa
- 1Department of Human Anatomy,Ahmadu Bello University,#56 Sokoto Zaria Road Samaru,Zaria 810271,Kaduna,Nigeria
| | - Gbenga O Gideon
- 1Department of Human Anatomy,Ahmadu Bello University,#56 Sokoto Zaria Road Samaru,Zaria 810271,Kaduna,Nigeria
| | - Bamidele Adetiba
- 1Department of Human Anatomy,Ahmadu Bello University,#56 Sokoto Zaria Road Samaru,Zaria 810271,Kaduna,Nigeria
| | - Clement B Alawa
- 2National Animal Production and Research Institute,Ahmadu Bello University,Zaria-Sokoto Road Samaru,Zaria 810271,Kaduna,Nigeria
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Abstract
Colorectal cancer (CRC) originates from the epithelial cells lining the colon or rectum of the gastrointestinal tract and represents the third most common form of cancer worldwide. CRC is frequently associated with Colitis Ulcerosa or Crohn's Disease demonstrating the tumor-promoting role of inflammation. Colorectal tumor cells establish heterotypic interactions with inflammatory cells and cancer-associated fibroblasts in the tumor stroma that support tumor angiogenesis and are essential for tumor progression. Therefore, establishment of suitable mouse models mimicking the inflammatory etiology of CRC is important. Here we describe methods to induce CRC in mice, to quantify tumor parameters (multiplicity, tumor load, mean tumor size), and to analyze the cellular composition of the CRC tumor stroma.
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Affiliation(s)
- Ilija Crncec
- Institute of Cancer Research (ICR) & Comprehensive Cancer Center (CCC), Medical University Vienna, Borschkegasse 8a, 1090, Vienna, Austria
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Abstract
Mouse models of melanoma have proven invaluable in the delineation of key molecular events involved in disease progression in humans and provide potential preclinical models for therapeutic testing (Damsky and Bosenberg, Pigment Cell Melanoma Res 25(4):404-405, 2012; Walker et al., Pigment Cell Melanoma Res 24(6):1158-1176, 2011). Here we concentrate on the clinicopathological analysis of melanocytic tumors.
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Affiliation(s)
- Blake Ferguson
- Queensland Institute of Medical Research, 300 Herston Road, Herston, Queensland, 4006, Australia
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Zhang XM, Li L, Xu JJ, Wang N, Liu WJ, Lin XH, Fu YC, Luo LL. Rapamycin preserves the follicle pool reserve and prolongs the ovarian lifespan of female rats via modulating mTOR activation and sirtuin expression. Gene 2013; 523:82-7. [PMID: 23566837 DOI: 10.1016/j.gene.2013.03.039] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.8] [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: 01/25/2013] [Accepted: 03/08/2013] [Indexed: 01/28/2023]
Abstract
To maintain the normal length of female reproductive life, the majority of primordial follicles must be maintained in a quiescent state for later use. In this study, we aimed to study the effects of rapamycin on primordial follicle development and investigate the role of mTOR and sirtuin signaling. Rats were treated every other day with an intraperitoneal injection of rapamycin (5mg/kg) or vehicle. After 10weeks of treatment, ovaries were harvested for hematoxylin and eosin (HE) staining, and analysis by immunohistochemistry and Western blotting. HE staining showed that the number and percentage of primordial follicles in the rapamycin-treated group were twice the control group (P<0.001). Immunohistochemical analysis showed that mTOR and phosphorylated-p70S6K were extensively expressed in surviving follicles with strong staining observed in the cytoplasm of the oocyte. Western blotting showed decreased expression of phosphorylated mTOR and phosphorylated p70S6K in the rapamycin-treated group, and increased the expression of both SIRT1 and SIRT6 compared to the control group (P<0.05). Taken together, these results suggest that rapamycin may inhibit the transition from primordial to developing follicles and preserve the follicle pool reserve, thus extending the ovarian lifespan of female rats via the modulation of mTOR and sirtuin signalings.
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Affiliation(s)
- Xing-mei Zhang
- Department of Gynaecology and Obstetrics of the First Affiliated Hospital, Medical College, Shantou University, Shantou 515041, China
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Shribak M. Quantitative orientation-independent differential interference contrast microscope with fast switching shear direction and bias modulation. J Opt Soc Am A Opt Image Sci Vis 2013; 30:769-82. [PMID: 23595339 PMCID: PMC3695724 DOI: 10.1364/josaa.30.000769] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
We describe a quantitative orientation-independent differential interference contrast (DIC) microscope, which allows bias retardation to be modulated and shear directions to be switched rapidly without any mechanical movement. The shear direction is switched by a regular liquid-crystal cell sandwiched between two standard DIC prisms. Another liquid-crystal cell modulates the bias. Techniques for measuring parameters of DIC prisms and calibrating the bias are shown. Two sets of raw DIC images with the orthogonal shear directions are captured within 1 s. Then the quantitative image of optical path gradient distribution within a thin optical section is computed. The gradient data are used to obtain a quantitative distribution of the optical path, which represents the refractive index gradient or height distribution. Computing enhanced regular DIC images with any desired shear direction is also possible.
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Affiliation(s)
- Michael Shribak
- Marine Biological Laboratory, Woods Hole, Massachusetts 02543, USA.
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Giuliani A, Manescu A, Langer M, Rustichelli F, Desiderio V, Paino F, De Rosa A, Laino L, d'Aquino R, Tirino V, Papaccio G. Three years after transplants in human mandibles, histological and in-line holotomography revealed that stem cells regenerated a compact rather than a spongy bone: biological and clinical implications. Stem Cells Transl Med 2013; 2:316-24. [PMID: 23502599 DOI: 10.5966/sctm.2012-0136] [Citation(s) in RCA: 124] [Impact Index Per Article: 11.3] [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: 12/25/2022] Open
Abstract
Mesenchymal stem cells deriving from dental pulp differentiate into osteoblasts capable of producing bone. In previous studies, we extensively demonstrated that, when seeded on collagen I scaffolds, these cells can be conveniently used for the repair of human mandible defects. Here, we assess the stability and quality of the regenerated bone and vessel network 3 years after the grafting intervention, with conventional procedures and in-line holotomography, an advanced phase-imaging method using synchrotron radiation that offers improved sensitivity toward low-absorbing structures. We found that the regenerated tissue from the graft sites was composed of a fully compact bone with a higher matrix density than control human alveolar spongy bone from the same patient. Thus, the regenerated bone, being entirely compact, is completely different from normal alveolar bone. Although the bone regenerated at the graft sites is not of the proper type found in the mandible, it does seem to have a positive clinical impact. In fact, it creates steadier mandibles, may well increase implant stability, and, additionally, may improve resistance to mechanical, physical, chemical, and pharmacological agents.
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Affiliation(s)
- Alessandra Giuliani
- Dipartimento di Scienze Cliniche e Odontostomatologiche, Sezione di Biochimica, Biologia e Fisica, Università Politecnica delle Marche, Ancona, Italy
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Seth A, Sy V, Pareek A, Suwandhi P, Rosenwaks Z, Poretsky L, Seto-Young D. Thiazolidinediones (TZDs) affect osteoblast viability and biomarkers independently of the TZD effects on aromatase. Horm Metab Res 2013; 45:1-8. [PMID: 22878908 DOI: 10.1055/s-0032-1321874] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Thiazolidinediones (TZDs) are insulin sensitizers used for treatment of diabetes. We have previously reported that TZDs reduce estrogen synthesis by inhibiting aromatase activity in human granulosa cells (HGC). Multiple clinical trials demonstrated that TZDs increase the risk of fractures in postmenopausal women with type 2 diabetes. We studied mouse osteoblasts alone or in a co-culture with HGC to determine whether TZD inhibition of aromatase plays a role in their effects on bone metabolism. Mouse osteoblasts were cultured with and without HGC, and incubated in a medium with or without testosterone, pioglitazone or rosiglitazone. Cell growth, oleic acid uptake, alkaline phosphatase activity, and osteocalcin production were measured. TZDs inhibited estradiol production by up to 84% in HGC/mouse osteoblast co-cultures. TZDs induced mouse osteoblast death and increased oleic acid uptake. TZDs also inhibited alkaline phosphatase activity (58-75%, p<0.046) and osteocalcin production (52-75%, p<0.031). For all the parameters, there were no significant differences between the osteoblast cultures alone and the HCG/osteoblast co-cultures. TZD effects on osteoblast viability, oleic acid uptake, alkaline phosphatase and osteocalcin production are independent of their effects on aromatase.
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Affiliation(s)
- A Seth
- Division of Endocrinology, Department of Medicine, The Friedman Diabetes Institute, Beth Israel Medical Center and Albert Einstein College of Medicine, New York, New York 10003, USA
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Wu F, Chen H, Zhou X, Zhang R, Ding M, Liu Q, Peng KL. Pulmonary fibrosis effect of ammonium perchlorate exposure in rabbit. Arch Environ Occup Health 2013; 68:161-165. [PMID: 23566323 DOI: 10.1080/19338244.2012.676105] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Ammonium perchlorate (AP) is a kind of inorganic chemical. To evaluate the potential pulmonary fibrosis caused by occupational exposure to this compound, 25 male rabbits were randomly allocated into 5 groups to receive AP or bleomycin or saline by intratracheal injection. All rabbits were sacrificed and lung tissues were removed to prepare hematoxylin and eosin (HE) staining for microscope observation and to perform electron microscopy examine. In microscope observation, AP-instilled lung tissue showed inflammatory infiltrates, alveolar collapse, subpleural thickening, and lymphocyte proliferation. Electron microscopy examination of lung tissue showed massive fibroblast accumulation, collagen fiber hyperplasia, and dense collagen deposition. The histopathological changes were considered as effective indicator linking to the development of pulmonary fibrosis. These results demonstrated that chronic instillation of AP can induce pulmonary fibrosis. And these results revealed that AP has pulmonary toxic effect.
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Affiliation(s)
- Fenghong Wu
- Institute of Industrial Toxicology, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
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Cherkezyan L, Subramanian H, Stoyneva V, Rogers JD, Yang S, Damania D, Taflove A, Backman V. Targeted alteration of real and imaginary refractive index of biological cells by histological staining. Opt Lett 2012; 37:1601-3. [PMID: 22627509 PMCID: PMC3367326 DOI: 10.1364/ol.37.001601] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Various staining techniques are commonly used in biomedical research to investigate cellular morphology. By inducing absorption of light, staining dyes change the intracellular refractive index due to the Kramers-Kronig relationship. We present a method for creating 2D maps of real and imaginary refractive indices of stained biological cells using their thickness and absorptance. We validate our technique on dyed polystyrene microspheres and quantify the alteration in refractive index of stained biological cells. We reveal that specific staining of individual organelles can increase their scattering cross-section by orders of magnitudes, implying a major impact in the field of biophotonics.
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Affiliation(s)
- Lusik Cherkezyan
- Biomedical Engineering Department, Northwestern University, Evanston, Illinois 60208, USA
| | - Hariharan Subramanian
- Biomedical Engineering Department, Northwestern University, Evanston, Illinois 60208, USA
| | - Valentina Stoyneva
- Biomedical Engineering Department, Northwestern University, Evanston, Illinois 60208, USA
| | - Jeremy D. Rogers
- Biomedical Engineering Department, Northwestern University, Evanston, Illinois 60208, USA
| | - Seungmoo Yang
- Biomedical Engineering Department, Northwestern University, Evanston, Illinois 60208, USA
| | - Dhwanil Damania
- Biomedical Engineering Department, Northwestern University, Evanston, Illinois 60208, USA
| | - Allen Taflove
- Electrical Engineering and Computer Science Department, Northwestern University, Evanston, Illinois 60208, USA
| | - Vadim Backman
- Biomedical Engineering Department, Northwestern University, Evanston, Illinois 60208, USA
- Corresponding author:
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Ying M, Zhuo S, Chen G, Zhuo C, Lu J, Zhu W, Xie S, Chen J, Yan J. Real-time noninvasive optical diagnosis for colorectal cancer using multiphoton microscopy. Scanning 2012; 34:181-185. [PMID: 21898461 DOI: 10.1002/sca.20286] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2011] [Accepted: 08/11/2011] [Indexed: 05/31/2023]
Abstract
In contrast to colonoscopy biopsy, which contains several disadvantages such as bleeding, sampling error, crush artifact, and time-consuming pathological procedure, multiphoton microscopy (MPM) enables direct noninvasive visualization of tissue architecture and cell morphology in live tissues without the administration of exogenous contrast agents. We performed a proof-of-principle study to evaluate the feasibility of using MPM to make real-time noninvasive optical diagnosis of colorectal cancer by investigating 30 fresh, unfixed, and unstained full-thickness colorectal specimens. We found that MPM images demonstrated irregular tubular structures, reduced stroma, and cellular and nuclear pleomorphism in the cancerous tissues. Cancer cells, characterized by irregular size and shape, enlarged nuclei, and increased nuclear-cytoplasmic ratio, were clearly observed in MPM images, which were comparable to golden standard hematoxylin-eosin staining images. Our findings showed that MPM had the potential to make real-time noninvasive optical diagnosis of colorectal cancer. With miniaturization and integration of colonoscopy, MPM has a promising future in real-time noninvasive "optical biopsy" for colorectal cancer.
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Affiliation(s)
- Mingang Ying
- Department of Surgery, Fujian Provincial Tumor Hospital, Teaching Hospital of Fujian Medical University, Fuzhou, People's Republic of China
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Mattos GE, Jacysyn JF, Amarante-Mendes GP, Lotfi CFP. Comparative effect of FGF2, synthetic peptides 1-28 N-POMC and ACTH on proliferation in rat adrenal cell primary cultures. Cell Tissue Res 2011; 345:343-56. [PMID: 21866314 DOI: 10.1007/s00441-011-1220-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [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: 05/04/2011] [Accepted: 07/17/2011] [Indexed: 11/26/2022]
Abstract
There is evidence that pro-opiomelanocortin (POMC)-derived peptides other than adrenocorticotropic hormone (ACTH) have a role in adrenal cell proliferation. We compared the activity of synthetic rat N-terminal POMC fragment 1-28 with disulfide bridges (N-POMC(w)) and without disulfide bridges (N-POMC(w/o)), with the activity of fibroblast growth factor (FGF2), a widely studied adrenal growth factor, and ACTH, in well-characterized pure cultures of both isolated adrenal Glomerulosa (G) and Fasciculata/Reticularis (F/R) cells. Three days of FGF2-treatment had a proliferative effect similar to serum, and synthetic peptide N-POMC(w) induced proliferation more efficiently than N-POMC(w/o). Moreover, both induced proliferation via the ERK1/2 pathway. In contrast, sustained ACTH treatment decreased proliferation and viability through apoptosis induction, but not necrosis, and independently of PKA and PKC pathways. Further elucidation of 1-28 POMC signal transduction is of interest, and primary cultures of adrenal cells were found to be useful for examining the trophic activity of this peptide.
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Affiliation(s)
- Gabriele E Mattos
- Department of Anatomy, Institute of Biomedical Sciences, University of São Paulo, SP, Brazil
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Vîlcea ID, Vasile I, Mirea CS, Meşină C, Enache SD, Tenovici M, Mogoantă S, Ghiţă C. Sentinel lymph node study in colorectal cancer using serial sectioning and Hematoxylin-Eosin staining: importance and limitations. Rom J Morphol Embryol 2011; 52:379-383. [PMID: 21424078] [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: 05/30/2023]
Abstract
The lymph node involvement represents an important predictor for survival in colorectal cancer; consequently, the best pathologic evaluation is necessary in order to adequately assess the lymph node status. This study aims to evaluate the impact of sentinel lymph node technique in colorectal cancer in lymphatic basin staging. The study included 43 consecutive operated cases, in which the identification of sentinel lymph node was performed during surgery (in vivo procedure - colon cancer) or immediately after the removal of the resection specimen (ex vivo procedure - rectal cancer). These cases were matched with 45 control cases. The identified sentinel lymph node was separately examined using multiple sections and Hematoxylin-Eosin staining method. The detection rate, accuracy, sensitivity and false negative rate were better for colon cancer (86.36%; 84.21%; 66.66%; 23.07%) vs. rectal cancer (61.9%; 84.61%; 50%; 18.18%), but there are no arguments for the feasibility of the technique in every day practice. Further studies and methods are mandatory in order to improve the staging of the pN status in colon and rectal cancer.
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Affiliation(s)
- I D Vîlcea
- Second Surgical Clinic, University of Medicine and Pharmacy of Craiova, Romania.
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Abstract
Tissue microarrays (TMAs) are produced by taking small punches from a series of paraffin-embedded (donor) tissue blocks and transferring these tissue cores into a positionally encoded array in a recipient paraffin block. Though TMAs are not used for clinical diagnosis, they have several advantages over using conventional whole histological sections for research. Tissue from multiple patients or blocks can be examined on the same slide, and only a very small amount of reagent is required to stain or label an entire array. Multiple sections (100-300) can be cut from a single array block, allowing for hundreds of analyses per microarray. These advantages allow the use of TMAs in high-throughput procedures, such as screening antibodies for diagnostics and validating prognostic markers that are impractical using conventional whole tissue sections. TMAs can be used for immunohistochemistry, immunofluorescence, in situ hybridization, and conventional histochemical staining. Finally, several tissue cores may be taken without -consuming the tissue block, allowing the donor block to be returned to its archive for any additional studies.
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Affiliation(s)
- Carol B Fowler
- Armed Forces Institute of Pathology, Washington, DC, USA
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