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Chen Y, Guan F, Wang P, Liu W, Zhang W, Sun H, Zhu L, Huang Y, Sun Y, Wang W. Copper exposure induces ovarian granulosa cell apoptosis by activating the caspase-dependent apoptosis signaling pathway and corresponding changes in microRNA patterns. Ecotoxicol Environ Saf 2023; 264:115414. [PMID: 37647803 DOI: 10.1016/j.ecoenv.2023.115414] [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: 04/01/2023] [Revised: 08/21/2023] [Accepted: 08/25/2023] [Indexed: 09/01/2023]
Abstract
Environmental copper (Cu) contamination is a complex worldwide public health problem. However, information on the effects of Cu pollution on human reproduction is limited. Although our previous studies have indicated that Cu exposure disrupts ovarian folliculogenesis, the underlying mechanism needs to be further explored. In this study, human luteinized ovarian granulosa cells and a rat animal model were used to investigate whether Cu exposure affects ovarian follicle development by inducing apoptosis and to elucidate the possible mechanisms. The results showed that Cu exposure from weaning to sexual maturity significantly decreased the proportion of preantral follicles but increased the proportion of atretic follicles (P < 0.05). In addition, 6 mg/kg Cu increased the proportion of antral follicles, while 12 and 25 mg/kg Cu decreased it (P < 0.05). We also found that 6 mg/kg Cu exposure inhibited apoptosis of ovarian granulosa cells, while 12 and 25 mg/kg Cu promoted apoptosis (P < 0.05). Experiments on primary human luteinized ovarian granulosa cells suggested that higher levels of Cu exposure induced a significant increase in the mRNA levels of Bcl2 Bax , Fas, Caspase8, and Caspase3 (P < 0.05), and the protein levels of BAX, BCL2, CASPASE3, CASPASE8, CLE-CASPASE3, CLE-CASPASE8 and BAX/BCL2 were also increased (P < 0.05). miRNA chip analyses identified a total of 95 upregulated and 10 downregulated miRNAs in human luteinized granulosa cells exposed to Cu. Hsa-miR-19b-3p, hsa-miR-19a-3p, miR-548ar-3p, hsa-miR-652-5p, and hsa-miR-29b-5p were decreased after Cu exposure (P < 0.05). Additionally, the level of hsa-miR-144-5p was increased (P < 0.05). Together, our results reveal that Cu exposure induces abnormal ovarian folliculogenesis by inducing ovarian granulosa cell apoptosis, which is triggered by the caspase-dependent apoptosis signaling pathway, and that miRNAs may be involved in this process.
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Affiliation(s)
- Yiqin Chen
- Department of Health Inspection and Quarantine, School of Public Health, Fujian Medical University, Fuzhou, Fujian, China; Fujian Province Key Laboratory of Environment and Health, School of Public Health, Fujian Medical University, Fuzhou, Fujian, China
| | - Fangyuan Guan
- Department of Health Inspection and Quarantine, School of Public Health, Fujian Medical University, Fuzhou, Fujian, China; Fujian Province Key Laboratory of Environment and Health, School of Public Health, Fujian Medical University, Fuzhou, Fujian, China
| | - Panlin Wang
- Department of Health Inspection and Quarantine, School of Public Health, Fujian Medical University, Fuzhou, Fujian, China; Fujian Province Key Laboratory of Environment and Health, School of Public Health, Fujian Medical University, Fuzhou, Fujian, China
| | - Weili Liu
- Department of Health Inspection and Quarantine, School of Public Health, Fujian Medical University, Fuzhou, Fujian, China; Fujian Province Key Laboratory of Environment and Health, School of Public Health, Fujian Medical University, Fuzhou, Fujian, China
| | - Wenhui Zhang
- Department of Health Inspection and Quarantine, School of Public Health, Fujian Medical University, Fuzhou, Fujian, China; Fujian Province Key Laboratory of Environment and Health, School of Public Health, Fujian Medical University, Fuzhou, Fujian, China
| | - Han Sun
- Department of Health Inspection and Quarantine, School of Public Health, Fujian Medical University, Fuzhou, Fujian, China; Fujian Province Key Laboratory of Environment and Health, School of Public Health, Fujian Medical University, Fuzhou, Fujian, China
| | - Lingling Zhu
- Department of Health Inspection and Quarantine, School of Public Health, Fujian Medical University, Fuzhou, Fujian, China; Fujian Province Key Laboratory of Environment and Health, School of Public Health, Fujian Medical University, Fuzhou, Fujian, China
| | - Yanxin Huang
- Department of Health Inspection and Quarantine, School of Public Health, Fujian Medical University, Fuzhou, Fujian, China; Fujian Province Key Laboratory of Environment and Health, School of Public Health, Fujian Medical University, Fuzhou, Fujian, China
| | - Yan Sun
- Center for Reproductive Medicine, Fujian Maternity and Child Health Hospital, College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fuzhou, Fujian, China
| | - Wenxiang Wang
- Department of Health Inspection and Quarantine, School of Public Health, Fujian Medical University, Fuzhou, Fujian, China; Fujian Province Key Laboratory of Environment and Health, School of Public Health, Fujian Medical University, Fuzhou, Fujian, China.
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Wu S, Li X, Guan F, Feng J, Jia J, Li J, Liu L. [Enhanced endoplasmic reticulum RyR1 receptor phosphorylation leads to diaphragmatic dysfunction in septic rats]. Nan Fang Yi Ke Da Xue Xue Bao 2023; 43:631-636. [PMID: 37202200 DOI: 10.12122/j.issn.1673-4254.2023.04.17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
OBJECTIVE To explore the role of endoplasmic reticulum ryanodine receptor 1 (RyR1) expression and phosphorylation in sepsis- induced diaphragm dysfunction. METHODS Thirty SPF male SD rats were randomized equally into 5 groups, including a sham-operated group, 3 sepsis model groups observed at 6, 12, or 24 h following cecal ligation and perforation (CLP; CLP-6h, CLP-12h, and CLP-24h groups, respectively), and a CLP-24h group with a single intraperitoneal injection of KN- 93 immediately after the operation (CLP-24h+KN-93 group). At the indicated time points, diaphragm samples were collected for measurement of compound muscle action potential (CMAP), fatigue index of the isolated diaphragm and fitted frequencycontraction curves. The protein expression levels of CaMK Ⅱ, RyR1 and P-RyR1 in the diaphragm were detected using Western blotting. RESULTS In the rat models of sepsis, the amplitude of diaphragm CMAP decreased and its duration increased with time following CLP, and the changes were the most obvious at 24 h and significantly attenuated by KN-93 treatment (P < 0.05). The diaphragm fatigue index increased progressively following CLP (P < 0.05) irrespective of KN- 93 treatment (P>0.05). The frequency-contraction curve of the diaphragm muscle decreased progressively following CLP, and was significantly lower in CLP-24 h group than in CLP-24 h+KN-93 group (P < 0.05). Compared with that in the sham-operated group, RyR1 expression level in the diaphragm was significantly lowered at 24 h (P < 0.05) but not at 6 or 12 following CLP, irrespective of KN-93 treatment; The expression level of P-RyR1 increased gradually with time after CLP, and was significantly lowered by KN-93 treatment at 24 h following CLP (P < 0.05). The expression level of CaMKⅡ increased significantly at 24 h following CLP, and was obviously lowered by KN-93 treatment (P < 0.05). CONCLUSION Sepsis causes diaphragmatic dysfunction by enhancing CaMK Ⅱ expression and RyR1 receptor phosphorylation in the endoplasmic reticulum of the diaphragm.
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Affiliation(s)
- S Wu
- Department of Anesthesiology, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, Southwest Medical University, Luzhou 646000, China
| | - X Li
- Department of Anesthesiology, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, Southwest Medical University, Luzhou 646000, China
| | - F Guan
- Department of Anesthesiology, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, Southwest Medical University, Luzhou 646000, China
| | - J Feng
- Department of Anesthesiology, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, Southwest Medical University, Luzhou 646000, China
| | - J Jia
- Department of Anesthesiology, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, Southwest Medical University, Luzhou 646000, China
| | - J Li
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, Southwest Medical University, Luzhou 646000, China
| | - L Liu
- Department of Anesthesiology, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
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Bronk J, Bronk L, Singh S, Guan F, Wang X, Zhu X, Schueler E, Jiang D, Mohan R, Koong A, Lang F, Grosshans D. Enhanced Radiation-Sparing Effects of Ultra-High Dose Rate Proton Radiation (FLASH-RT) in a Human Induced Pluripotent Stem Cell-Derived Cerebral Organoid Model. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Liang X, Guan F, Hu ZQ, Li B, Li YK, Jing B, Huang H, Zhu GT, Mao BB. [The related factors of postoperative recurrence in trigeminalneuralgia patients undergoing fully neuroendoscopic microvascular decompression]. Zhonghua Yi Xue Za Zhi 2022; 102:2465-2469. [PMID: 36000377 DOI: 10.3760/cma.j.cn112137-20211218-02820] [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 evaluate the related factors of postoperative recurrence intrigeminal neuralgia (TN) patients treated with fully neuroendoscopic microvascular decompression (MVD). Methods: The clinical baseline data and preoperative MRI imaging data of 112 patients with TN treated by neuroendoscopic MVD from December 2008 to December 2020 in the Department of Neurosurgery, Beijing Shijitan Hospital Affiliated to Capital Medical University were retrospectively analyzed, including: area ratio of cerebellopontine area (CPA)(healthy side/affected side), trigeminal nerve(TGN)length ratio(healthy side/affected side), TGN angle ratio(healthy side/affected side), and criminal vessel type. Multivariate Cox proportional hazards model was used to analyze the factors affecting postoperative recurrence. Results: Among the 112 patients in this group, there were 49 males and 63 females. The age ranged from 20 to 82 (59±9) years, and the course of disease was 0.05 to 30.00 (5.60±5.15) years. Pain was located on the left side in 43 cases (38.39%) and on the right side in 69 cases (61.61%), respectively. All patients were followed up for more than 1 year, with an average follow-up time of 21.5 months, and 11 cases recurred. Multivariate Cox regression analysis revealed that disease duration≥3 years(HR=9.34, 95%CI:1.12-39.07), CPA area ratio(healthy side/affected side)>1 (HR=27.47, 95%CI:1.69-44.20), criminal vessel type with vein(HR=35.39, 95%CI:1.26-18.60) and criminal vessel type with arteriovenous (HR=46.07, 95%CI: 2.74-27.75) were the main factors influencing recurrence of MVD surgery (all P<0.05). Conclusion: The disease duration≥3 years, CPA area ratio(healthy side/affected side)>1, and criminal vessel type with vein/arteriovenous are the relevant factors that affect the recurrence rate after the fully neuroendoscopic MVD treatment for trigeminal neuralgia.
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Affiliation(s)
- X Liang
- Department of Neurosurgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - F Guan
- Department of Neurosurgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - Z Q Hu
- Department of Neurosurgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - B Li
- Department of Neurosurgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - Y K Li
- Department of Neurosurgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - B Jing
- Department of Neurosurgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - H Huang
- Department of Neurosurgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - G T Zhu
- Department of Neurosurgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - B B Mao
- Department of Neurosurgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
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Guan F, Sheng Q, Zhang Y, Lv H, Wang Y. The complete mitochondrial genome of a vulnerable mandarin fish Coreoperca liui (Teleostei: Perciformes: Serranidae) from Qiandaohu Lake in China. Mitochondrial DNA B Resour 2022; 7:1075-1077. [PMID: 35783049 PMCID: PMC9248940 DOI: 10.1080/23802359.2022.2086081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Coreoperca liui as an approximate species of the genus Siniperca, provides an important source for the genetic diversity of the mandarin fish, which is valuable for the protection of biodiversity and utilization of germplasm resources. The complete mitochondrial genome of C. liui is 16,482 bp long and it consists of 13 protein-coding genes (PCGs), two ribosomal RNA genes, 22 transfer RNA genes, and a control region (D-loop). Phylogenetic analysis using the maximum-likelihood method, based on 13 PCGs and two rRNA from 13 species produced three major clades. The phylogenetic tree showed that C. liui is most closely related to Coreoperca whiteheadi. Our results provide useful information for understanding the phylogeny of the genus Coreoperca, as well as for conducing conservation studies of Sinipercidae and related species.
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Affiliation(s)
- Fangyuan Guan
- College of Life Sciences, Zhejiang Province Key Laboratory of Aquatic Resources Conservation and Development, Huzhou University, Huzhou, China
| | - Qiang Sheng
- College of Life Sciences, Zhejiang Province Key Laboratory of Aquatic Resources Conservation and Development, Huzhou University, Huzhou, China
| | - Yixiang Zhang
- College of Life Sciences, Zhejiang Province Key Laboratory of Aquatic Resources Conservation and Development, Huzhou University, Huzhou, China
| | - He Lv
- College of Life Sciences, Zhejiang Province Key Laboratory of Aquatic Resources Conservation and Development, Huzhou University, Huzhou, China
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Guan F, He HH, Zhang SY, Wu XY, Yuan JP. [Clinicopathological analysis of primary squamous cell carcinoma of the thyroid combined with papillary thyroid carcinoma]. Zhonghua Bing Li Xue Za Zhi 2021; 50:808-810. [PMID: 34405621 DOI: 10.3760/cma.j.cn112151-20201022-00801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- F Guan
- Department of Pathology, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - H H He
- Department of Pathology, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - S Y Zhang
- Department of Pathology, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - X Y Wu
- Department of Pathology, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - J P Yuan
- Department of Pathology, Renmin Hospital of Wuhan University, Wuhan 430060, China
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Peng WC, Guan F, Hu ZQ, Huang H, Dai B, Zhu GT, Mao BB, Xiao ZY, Zhang BL, Liang X. [Efficacy analysis of fully endoscopic microvascular decompression in primary trigeminal neuralgia via keyhole approach]. Zhonghua Yi Xue Za Zhi 2021; 101:856-860. [PMID: 33789367 DOI: 10.3760/cma.j.cn112137-20200630-02002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the efficacy and technical features of fully endoscopic microvascular decompression(MVD) in primary trigeminal neuralgia(PTN) via keyhole approach. Methods: The clinical data of 97 patients with PTN underwent fully endoscopic MVD via keyhole approach in the Department of Neurosurgery, Beijing Shijitan Hospital, Capital Medical University from December 2014 to February 2019 was collected. During fully endoscopic MVD in PTN via keyhole approach, performer use natural clearance without grinding except developed rock bone crest or excessive retraction of the brain tissue, visually and panoramically observe and evaluate the CPA area, accurately identify the responsible vessels, to avoid the omission of responsible vessels or insufficient decompression. And the use of preplaced technology, bridging technology and submersible technology, ensure the efficacy of surgery and reduce the surgical side injuries.Barrow Neurological Institute (BNI) pain score was used to evaluate the efficacy and identify the recurrence. The surgical efficacy was analyzed. Results: The offending vessels were identified under endoscope in 96 cases. Among them, arterial compression was found in 77 cases, venous compression in 6 cases, and both arterial and venous compression in 13 cases. About the pain outcomes, 87 cases had immediate and complete relief of pain, 5 cases had almost relief of pain, 4 cases had partial relief of pain, and still needed medication control, but the dose was lower than that before operation, and 1 case had no obvious relief of pain. About complications, there were 4 cases of temporary facial numbness, 1 case of temporary hearing loss, both of them recovered after symptomatic treatment. There was no cerebral infarction or hemorrhage, intracranial or incision infection. All cases were followed up for 3.0-38.0 months with a median period of(22.4±2.2) months. During the follow-up periods, postoperative recurrence occurred in 3 cases. Conclusion: Fully endoscopic MVD for PTN through keyhole approach, provides panoramic view to avoid omission of offending vessels and reduce complications, seemed to be a safe and effective surgical method.
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Affiliation(s)
- W C Peng
- Department of Neurosurgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - F Guan
- Department of Neurosurgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - Z Q Hu
- Department of Neurosurgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - H Huang
- Department of Neurosurgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - B Dai
- Department of Neurosurgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - G T Zhu
- Department of Neurosurgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - B B Mao
- Department of Neurosurgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - Z Y Xiao
- Department of Neurosurgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - B L Zhang
- Department of Neurosurgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - X Liang
- Department of Neurosurgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
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Wang N, Guan F, Lv X, Han D, Zhang Y, Wu N, Xia X, Tian J. Enhancing secretion of polyethylene terephthalate hydrolase PETase in
Bacillus subtilis
WB600 mediated by the SP
amy
signal peptide. Lett Appl Microbiol 2020; 71:235-241. [DOI: 10.1111/lam.13312] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Revised: 04/28/2020] [Accepted: 05/04/2020] [Indexed: 11/29/2022]
Affiliation(s)
- N. Wang
- School of Biotechnology Jiangnan University Jiangsu Wuxi China
- Biotechnology Research Institute Chinese Academy of Agricultural Sciences Beijing China
| | - F. Guan
- Biotechnology Research Institute Chinese Academy of Agricultural Sciences Beijing China
| | - X. Lv
- School of Biotechnology Jiangnan University Jiangsu Wuxi China
| | - D. Han
- Institute of Environment and Sustainable Development in Agriculture Chinese Academy of Agricultural Sciences Beijing China
| | - Y. Zhang
- Biotechnology Research Institute Chinese Academy of Agricultural Sciences Beijing China
| | - N. Wu
- Biotechnology Research Institute Chinese Academy of Agricultural Sciences Beijing China
| | - X. Xia
- School of Biotechnology Jiangnan University Jiangsu Wuxi China
| | - J. Tian
- Biotechnology Research Institute Chinese Academy of Agricultural Sciences Beijing China
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Guan F, Yan HL, Chen FF, He HH. [Clinicopathological analysis of ovarian composite neuroendocrine carcinoma]. Zhonghua Bing Li Xue Za Zhi 2020; 49:65-67. [PMID: 31914538 DOI: 10.3760/cma.j.issn.0529-5807.2020.01.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- F Guan
- Department of Pathology, Renmin Hospital of Wuhan University, Wuhan 430060, China
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Guo Y, Wang W, Chen Y, Sun Y, Li Y, Guan F, Shen Q, Guo Y, Zhang W. Continuous gibberellin A3 exposure from weaning to sexual maturity induces ovarian granulosa cell apoptosis by activating Fas-mediated death receptor signaling pathways and changing methylation patterns on caspase-3 gene promoters. Toxicol Lett 2020; 319:175-186. [PMID: 31733319 DOI: 10.1016/j.toxlet.2019.11.012] [Citation(s) in RCA: 14] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2019] [Revised: 11/08/2019] [Accepted: 11/11/2019] [Indexed: 12/20/2022]
Abstract
Information on the effects of gibberellic acid (gibberellin A3, GA3) on ovarian follicle development is limited. In our present study, 21-day-old female Wistar rats were exposed to GA3 by gavage (25, 50, and 100 mg/kg body weight, once per day) for eight weeks to evaluate the influence of GA3 on ovarian follicle development. After treatment, significant (P < 0.05) increases (to 40.17 % and 44.5 %, respectively) in atretic follicle proportions and significant decreases (to 19.49 % and 17.86 %, respectively) in corpus luteum proportions were observed in the 50 and 100 mg/kg treatment groups compared to the control group. Significant (P < 0.05) increases (to 31.3 % and 42.0 %, respectively) in follicle apoptosis were observed in the 50 and 100 mg/kg treatment groups by transmission electron microscopy and terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL) assays. Significantly increased expression of caspase-3, caspase-8, caspase-9 and Fas was observed by real-time PCR and Western blotting. Bisulfite sequencing PCR (BSP) revealed obviously decreased total methylation percentages of the caspase-3 promoter region in the two treatment groups. Real-time quantitative PCR also showed significantly decreased mRNA expression of DNA methyltransferase (Dnmt) 3a and Dnmt3b. Further in vitro studies showed that a DNA methylation inhibitor could enhance the GA3-induced increase in the mRNA expression of caspase-3. Overall, our present study indicates that GA3 administration from weaning until sexual maturity can affect ovarian follicle development by inducing apoptosis and suggests that signaling through the Fas-mediated apoptotic pathway may be an important underlying mechanism of this apoptosis. In addition, GA3-induced aberrant DNA methylation patterns might be partly responsible for upregulation of caspase-3 gene expression.
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Affiliation(s)
- Yiwei Guo
- Fujian Province Key Laboratory of Environment and Health, School of Public Health, Fujian Medical University, Fuzhou, Fujian, China; Department of Health Inspection and Quarantine, School of Public Health, Fujian Medical University, Fuzhou, Fujian, China
| | - Wenxiang Wang
- Fujian Province Key Laboratory of Environment and Health, School of Public Health, Fujian Medical University, Fuzhou, Fujian, China; Department of Health Inspection and Quarantine, School of Public Health, Fujian Medical University, Fuzhou, Fujian, China.
| | - Yiqin Chen
- Fujian Province Key Laboratory of Environment and Health, School of Public Health, Fujian Medical University, Fuzhou, Fujian, China; Department of Health Inspection and Quarantine, School of Public Health, Fujian Medical University, Fuzhou, Fujian, China
| | - Yan Sun
- Center for Reproductive Medicine, Teaching Hospital of Fujian Medical University, Fujian Maternity and Child Health Hospital, Fuzhou, Fujian, China
| | - Yuchen Li
- Department of Health Inspection and Quarantine, School of Public Health, Fujian Medical University, Fuzhou, Fujian, China
| | - Fangyuan Guan
- Fujian Province Key Laboratory of Environment and Health, School of Public Health, Fujian Medical University, Fuzhou, Fujian, China
| | - Qi Shen
- Fujian Province Key Laboratory of Environment and Health, School of Public Health, Fujian Medical University, Fuzhou, Fujian, China
| | - Yiruo Guo
- Fujian Province Key Laboratory of Environment and Health, School of Public Health, Fujian Medical University, Fuzhou, Fujian, China
| | - Wenchang Zhang
- Department of Health Inspection and Quarantine, School of Public Health, Fujian Medical University, Fuzhou, Fujian, China
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Su HY, Lin ZY, Peng WC, Guan F, Zhu GT, Mao BB, Dai B, Huang H, Hu ZQ. MiR-448 downregulates CTTN to inhibit cell proliferation and promote apoptosis in glioma. Eur Rev Med Pharmacol Sci 2019; 22:3847-3854. [PMID: 29949161 DOI: 10.26355/eurrev_201806_15269] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE miRNAs have been confirmed to be related to cell proliferation and apoptosis. In this study, we detected the potential effect of miR-448 on glioma cell proliferation and apoptosis. MATERIALS AND METHODS miR-448 and CTTN expression levels were detected in glioma cell lines with quantitative reverse transcriptase-polymerase chain reaction (qRT-PCR). Cells were transfected with miR-448 mimics and inhibitor by using lipofectamine 2000 respectively. The proliferative ability of transfected cells was detected via methyl thiazolyl tetrazolium (MTT) and cell counting kit-8 (CCK8) assays. Cell apoptosis and cell-cycle were tested using flow cytometry. The regulatory correlation between miR-448 and CTTN was explored by bioinformatics analysis and luciferase reporter assay. RESULTS Lower expression of miR-448 and higher level of CTTN were detected in glioma cells. MiR-448 could regulate cell proliferation, cell apoptosis, and cell cycle. CTTN was negatively regulated by miR-448. CONCLUSIONS miR-448 downregulates CTTN to inhibit cell proliferation and promote apoptosis in glioma, which indicates a potential therapeutic target of glioma.
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Affiliation(s)
- H-Y Su
- Department of Neurological Surgery, Peking University Ninth School of Clinical Medicine, Beijing, China.
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12
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Zhu GT, Hu ZQ, Huang H, Dai B, Guan F, Xiao ZY, Mao BB. [Application of complete endoscopic technique in microvascular decompression related tovertebrobasilar artery compression]. Zhonghua Yi Xue Za Zhi 2019; 99:2597-2601. [PMID: 31510719 DOI: 10.3760/cma.j.issn.0376-2491.2019.33.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To study the operative method, special technique and curative effect of complete neuroendoscopic microvascular decompression(MVD) related to vertebrobasilar artery compression. Methods: Thirteen patients with functional cranial nerve disease caused by vertebrobasilar artery as direct or indirect responsible vessel accepted complete endoscopic MVD, including 11 patients with hemifacial spasm and 2 patients with trigeminal neuralgia. The procedure and curative effect of endoscopic surgery were analyzed retrospectively. Results: All procedures of complete neuroendoscopic MVD were successfully completed.Intraoperative observation by endoscope showed that 6 cases were oppressed directly by vertebral artery, 2 cases were oppressed directly by basilar artery, 5 cases were combined oppressed by displaced basilar artery and other vessels (1 case was superior cerebellar artery and 4 cases were anterior inferior cerebellar artery). During the operation, Teflon sheets was placed directly into the compression point in 2 cases, the "Pre-placed" technique was used to place Teflon sheets in 7 cases, and the "Set up bridge" technique was used to place Teflon sheets in 4 cases. Follow-up for 8-38 months,the symptoms disappeared completely in 12 cases and improved in 1 case. No deaths and severe complications occurred, such as postoperative bleeding, cerebellar infarction and intracranial infection. Conclusion: MVD related to vertebrobasilar artery compression can be performed by complete neuroendoscopic technique, which can achieve sufficient decompression effect and curative effect.Flexible use of the special technology of placing Teflon sheets by single-hand under endoscope, such as the "Pre-placed" and "Set up bridge" technique, is an important technical guarantee for the successful completion of endoscopic MVD.
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Affiliation(s)
- G T Zhu
- Neurosurgery of Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
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Darne C, Robertson D, Alsanea F, Guan F, Pan T, Grosshans D, Gautam A, Beddar S. A Proton Radiography System Design Using a Liquid Scintillator Detector. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Guan F, Peng WC, Huang H, Dai B, Zhu GT, Mao BB, Xiao ZY, Lin ZY, Hu ZQ. [Efficacy analysis of soft neuroendoscopic techniques in the treatment of chronic subdural hematoma]. Zhonghua Yi Xue Za Zhi 2019; 99:695-699. [PMID: 30831620 DOI: 10.3760/cma.j.issn.0376-2491.2019.09.012] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the efficacy of soft neuroendoscopic techniques in the treatment of chronic subdural hematoma (CSDH). Methods: A retrospective analysis of 201 cases of CSDH diagnosed and treated at Beijing Shijitan Hospital (CMU) from January 2006 to December 2017 was conducted. From January 2006 to December 2010, 126 cases of CSDH were treated with skull drilling and drainage (non-endoscopic group). From January 2011 to December 2017, 75 cases of CSDH were treated with soft neuroendoscopy (endoscopic group). The operation time of the non-endoscopic and endoscopic groups, the hematoma clearance rate on the first day after surgery, the time of the drainage tube, the length of hospital stay, the incidence of complications, mortality and recurrence rate were compared. Results: There were no deaths in both groups. The average operation time of the non-endoscopic group was 43 min, compared with the average operation time of the endoscopy group of 50 min, there was no significant difference (P>0.05). The average hematoma clearance rate on the first day after surgery in the endoscopy group (98.2%) was significantly higher than that in non-endoscopic group (87.3%) (P<0.01). The average time of drainage tube in the endoscopy group (23 h) was significantly shorter than that in the non-endoscopic group (50 h) (P<0.01). On the first postoperative day, the proportion of patients with mRS≤3 in the endoscopic group was significantly higher than that in the non-endoscopic group (P<0.01). At the time of discharge, the proportion of patients with mRS≤3 in the endoscopy group was also significantly higher than that in the non-endoscopic group, P<0.05. There was no significant difference in the average hospital stay between endoscopy group (7 d) and non-endoscopic group (8 d) (P>0.05). The postoperative complication rate in the endoscopy group was significantly lower than that in the non-endoscopic group (P<0.01). During 0.5-8 years of follow-up, the recurrence rate of CSDH in the endoscopic group (5.33%) was significantly lower than that in the non-endoscopic group (15.07%) (P<0.01). Conclusion: The application of visualization features of soft neuroendoscopy in the treatment of CSDH can significantly improve hematoma clearance, shorten the time of drainage tube, reduce postoperative complications and recurrence rate, and improve surgical outcomes.
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Affiliation(s)
- F Guan
- Department of Neurosurgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
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Sa R, Li YH, Zhang CB, Guan F. [Lung primary germ cell tumor: a case report]. Zhonghua Zhong Liu Za Zhi 2019; 41:186-187. [PMID: 30917453 DOI: 10.3760/cma.j.issn.0253-3766.2019.03.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- R Sa
- Department of Nuclear Medicine, the First Hospital of Jilin University, Changchun 130021, China
| | - Y H Li
- Department of Nuclear Medicine, the First Hospital of Jilin University, Changchun 130021, China
| | - C B Zhang
- Department of Pathology, the First Hospital of Jilin University, Changchun 130021, China
| | - F Guan
- Department of Nuclear Medicine, the First Hospital of Jilin University, Changchun 130021, China
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Yu Y, Zhao Y, Teng F, Li J, Guan Y, Xu J, Lv X, Guan F, Zhang M, Chen L. Berberine Improves Cognitive Deficiency and Muscular Dysfunction via Activation of the AMPK/SIRT1/PGC-1a Pathway in Skeletal Muscle from Naturally Aging Rats. J Nutr Health Aging 2018; 22:710-717. [PMID: 29806860 DOI: 10.1007/s12603-018-1015-7] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [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: 12/27/2022]
Abstract
OBJECTIVE The manifestations of aging include cognitive deficits and muscular dysfunction, which are closely linked to impairment of mitochondrial biogenesis. Berberine, an isoquinoline alkaloid, presents multiple anti-diabetic pharmacological effects. Evidence has indicated that insulin resistance and cognitive impairment share the same pathogenesis, and berberine could reverse glucose metabolism abnormalities and muscle mitochondrial dysfunction induced by a high-fat diet. This study was used to investigate whether berberine could be used as an anti-aging drug to prevent cognitive deficits and muscular dysfunction in natural aging. METHODS Biochemical indicators and an intraperitoneal glucose tolerance test were tested in 5-month-old rats (5 mo group), 24-month-old rats (24 mo group) and 24-month-old rats that had undergone 6 months of berberine treatment (BBR group). A Morris water maze test was conducted to assess the cognitive ability of the rats. Insulin resistance in whole-body was evaluated by intraperitoneal glucose tolerance test (IPGTT). The morphology of the skeletal muscle tissue was observed by hematoxylin-eosin (HE) staining. The levels of total cholesterol, triglyceride, ATP and reactive oxygen species (ROS) were assessed with corresponding reagent kits. The protein expressions of GLUT4, AMPK, SIRT1 and PGC-1α in skeletal muscle were examined by Western blot. RESULTS The results showed that administration of berberine for 6 months significantly improved cognitive deficits and insulin resistance in naturally aging rats (p<0.01). Furthermore, berberine treatment helped normalize the disordered alignment and the decreased number of muscle fibers (p<0.01) in the skeletal muscle of 24 mo rats. Berberine decreased the levels of ROS in both the serum and the skeletal muscle of 24 mo rats (p<0.01). Berberine increased the protein expression of p-AMPK, SIRT1 and PGC-1α and increased the production of ATP in the skeletal muscle of aging rats (p<0.01). CONCLUSIONS Berberine markedly ameliorates aging-related reductions in cognitive ability and muscular function, and the activation of the AMPK/SIRT1/PGC-1α pathway in skeletal muscle may be the underlying protective mechanism of berberine on muscular function.
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Affiliation(s)
- Y Yu
- Dr. Ming Zhang, Associate Professor, Department of Pharmacology, College of Basic Medical Sciences, School of Nursing, Jilin University, 126 Xin Min Street, Changchun, Jilin 130021, China. E-mail:
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Guan F, Bronk L, Kerr M, Wang X, Li Y, Peeler C, Sahoo N, Patel D, Mirkovic D, Titt U, Grosshans D, Mohan R. WE-H-BRA-05: Investigation of LET Spectral Dependence of the Biological Effects of Therapeutic Protons. Med Phys 2016. [DOI: 10.1118/1.4957996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Kerr M, Bronk L, Guan F, Patel D, Li Y, Wang X, Sahoo N, Peeler C, Titt U, Mirkovic D, Grosshans D, Mohan R. TH-CD-209-12: Spatial Mapping of Scanned Proton Biologic Effect Using the High-Throughput Technique, Continued. Med Phys 2016. [DOI: 10.1118/1.4958206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Patel D, Bronk L, Guan F, Peeler C, Mirkovic D, Grosshans D, Jakel O, Abdollahi A, Titt U, Mohan R. WE-H-BRA-06: Experimental Investigation of RBE for Lung Cancer Cell Lines as a Function of Dose and LET in Proton, Helium and Carbon Beams. Med Phys 2016. [DOI: 10.1118/1.4957997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Li SW, Liu CM, Guo J, Marcondes AM, Deeg J, Li X, Guan F. Iron overload induced by ferric ammonium citrate triggers reactive oxygen species-mediated apoptosis via both extrinsic and intrinsic pathways in human hepatic cells. Hum Exp Toxicol 2015. [PMID: 26224043 DOI: 10.1177/0960327115597312] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
BACKGROUND Hepatic iron overload is common in patients with myelodysplastic syndromes undergoing hematopoietic cell transplantation (HCT) and may predispose to peri- and post-HCT toxicity. To better understand the mechanisms of iron overload-induced liver injury, we examined the effects of iron overload induced by ferric ammonium citrate (FAC) on oxidative stress and apoptosis signaling pathway in human hepatic cell line HH4. METHODS AND RESULTS Hepatic HH4 cells were exposed to FAC to force iron uptake, and cellular responses were determined. Incubation with 5 mM FAC resulted in increased intracellular iron content in a time-dependent manner. High concentration of FAC impaired cell viability and increased level of reactive oxygen species (ROS), and addition of antioxidant reagent such as glutathione or N-acetylcysteine dramatically reduced FAC-induced intracellular ROS generation. FAC overload significantly increased the phosphorylation of inhibitor of κB-α, p38 mitogen-activated protein kinase (MAPK), and nuclear factor κ light chain enhancer of activated B cells (NF-κB) p65 and promoted the nuclear translocation of NF-κB p65. Knockdown of Fas and Bid expression by small interfering RNA in iron-treated HH4 cells resulted in restoration of cell viability. CONCLUSIONS We reported that FAC treatment is capable of inducing both extrinsic death receptor and intrinsic mitochondrial signaling pathway-mediated HH4 cells apoptosis through ROS-activated p38 MAPK and NF-κB pathways.
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Affiliation(s)
- S-W Li
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi, Jiangsu, China School of Biotechnology, Jiangnan University, Wuxi, Jiangsu, China
| | - C-M Liu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi, Jiangsu, China School of Biotechnology, Jiangnan University, Wuxi, Jiangsu, China
| | - J Guo
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi, Jiangsu, China School of Biotechnology, Jiangnan University, Wuxi, Jiangsu, China
| | - A M Marcondes
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - J Deeg
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA Department of Medicine, University of Washington, Seattle, WA, USA
| | - X Li
- Wuxi Medical School, Jiangnan University, Wuxi, Jiangsu, China
| | - F Guan
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi, Jiangsu, China School of Biotechnology, Jiangnan University, Wuxi, Jiangsu, China
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Guan F, Titt U, Patel D, Bronk L, Taleei R, Peeler C, Mirkovic D, Grosshans D, Jakel O, Mohan R. WE-EF-BRA-05: Experimental Design for High-Throughput In-Vitro RBE Measurements Using Protons, Helium and Carbon Ions. Med Phys 2015. [DOI: 10.1118/1.4925984] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Guan F, Bronk L, Kerr M, Titt U, Wang X, Taleei R, Peeler C, Patel D, Mirkovic D, Grosshans D, Mohan R. TU-EF-304-09: Quantifying the Biological Effects of Therapeutic Protons by LET Spectrum Analysis. Med Phys 2015. [DOI: 10.1118/1.4925664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Peeler C, Taleei R, Guan F, Bronk L, Patel D, Titt U, Mirkovic D, Stewart R, Grosshans D, Mohan R. SU-F-BRD-16: Relative Biological Effectiveness of Double-Strand Break Induction for Modeling Cell Survival in Pristine Proton Beams of Different Dose-Averaged Linear Energy Transfers. Med Phys 2015. [DOI: 10.1118/1.4925195] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Taleei R, Peeler C, Guan F, Patel D, Titt U, Mirkovic D, Grosshans D, Mohan R. SU-E-T-547: Modeling Biological Response to Proton Irradiation and Evaluating Its Potential Clinical Consequences. Med Phys 2015. [DOI: 10.1118/1.4924909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Robinson MA, Guan F, McDonnell S, Uboh CE, Soma LR. Pharmacokinetics and pharmacodynamics of dermorphin in the horse. J Vet Pharmacol Ther 2014; 38:321-9. [DOI: 10.1111/jvp.12179] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Accepted: 09/18/2014] [Indexed: 11/28/2022]
Affiliation(s)
- M. A. Robinson
- Department of Clinical Studies; School of Veterinary Medicine; University of Pennsylvania; Kennett Square PA USA
- PA Equine Toxicology and Research Laboratory; West Chester PA USA
| | - F. Guan
- Department of Clinical Studies; School of Veterinary Medicine; University of Pennsylvania; Kennett Square PA USA
| | - S. McDonnell
- Department of Clinical Studies; School of Veterinary Medicine; University of Pennsylvania; Kennett Square PA USA
| | - C. E. Uboh
- Department of Clinical Studies; School of Veterinary Medicine; University of Pennsylvania; Kennett Square PA USA
- PA Equine Toxicology and Research Laboratory; West Chester PA USA
| | - L. R. Soma
- Department of Clinical Studies; School of Veterinary Medicine; University of Pennsylvania; Kennett Square PA USA
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Peeler C, Taleei R, Guan F, Bronk L, Grosshans D, Mirkovic D, Titt U, Mohan R. SU-E-T-47: Application of the Repair-Misrepair-Fixation RBE Model to Describe the Results of High Resolution Proton Irradiation Cell Survival Experiments. Med Phys 2014. [DOI: 10.1118/1.4888377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Bronk L, Guan F, Kerr M, Dinh J, Titt U, Mirkovic D, Lin S, Mohan R, Grosshans D. WE-E-BRE-07: High-Throughput Mapping of Proton Biologic Effect. Med Phys 2014. [DOI: 10.1118/1.4889436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Taleei R, Titt U, Peeler C, Guan F, Mirkovic D, Grosshans D, Mohan R. TH-A-19A-05: Modeling Physics Properties and Biologic Effects Induced by Proton and Helium Ions. Med Phys 2014. [DOI: 10.1118/1.4889538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Randeniya S, Mirkovic D, Titt U, Guan F, Mohan R. SU-E-T-491: Importance of Energy Dependent Protons Per MU Calibration Factors in IMPT Dose Calculations Using Monte Carlo Technique. Med Phys 2014. [DOI: 10.1118/1.4888824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Guan F, Bronk L, Kerr M, Titt U, Taleei R, Mirkovic D, Zhu X, Grosshans D, Mohan R. TH-A-19A-07: The Effect of Particle Tracking Step Size Limit On Monte Carlo- Computed LET Spectrum of Therapeutic Proton Beams. Med Phys 2014. [DOI: 10.1118/1.4889540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Zhao F, Huang X, Hou X, Deng Y, Wu M, Guan F, Liu W, Li Y, Lei J. Schistosoma japonicum: susceptibility of neonate mice born to infected and noninfected mothers following subsequent challenge. Parasite Immunol 2014; 35:157-63. [PMID: 23387533 DOI: 10.1111/pim.12027] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2012] [Accepted: 01/28/2013] [Indexed: 11/28/2022]
Abstract
This study was to investigate the differences between neonate mice born to Schistosoma japonicum-infected mothers and those born to noninfected mothers in subsequent challenge. The intensity of infection (evidenced by worm burden and liver egg burden) and liver immunopathology (number and size of liver granulomas) were significantly reduced in neonates from infected mothers (I.M.) compared with neonates from noninfected mothers (N.M.). Anti-soluble worm antigen of S. japonicum (SWA) IgG could be detected in sera of neonates from I.M. (N.N./I.M.) at 1 week after delivery, remained a plateau for 2 weeks and gradually decreased until 8 weeks of age. Parasite-specific IgM was not detected in sera from N.N./I.M. at any time after delivery. At 6 weeks after infection, the level of anti-SWA IgG in infected neonates from I.M. (I.N./I.M.) was significantly higher than that of infected neonates from N.M. (I.N./N.M.). In addition, production of IFN-γ, IL-12 and TGF-β by cultured splenocytes from I.N./I.M. was significantly increased, while the level of IL-4 was significantly decreased when compared to those from I.N./N.M.. These data demonstrate that congenital exposure to schistosomiasis japonica may render neonatal mice born to I.M. less susceptible to subsequent challenge and result in down-regulation of both infection intensity and immunopathology.
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Affiliation(s)
- F Zhao
- Department of Parasitology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Abstract
High glycine-tyrosine proteins (HGTPs), also known as keratin-associated proteins (KAPs), play a key role in the major structures and mechanical properties of wool fiber. Sheep HGTPs consist of three multigene families: KAP6, KAP7, and KAP8 genes. Polymorphisms of these three genes have been proposed to have important effects on wool fiber traits. The aim of the present study was to identify polymorphisms of the KAP6, KAP7, and KAP8 genes in four sheep breeds, including Chinese Merino superfine wool sheep, Hu sheep, a Merino x Hu crossed breed, and Romney sheep. Polymerase chain reaction (PCR) product direct sequencing, PCR-single-strand conformation polymorphism, and cloned sequencing methods were used to find genetic variation and identify polymorphisms in these genes. The Mutation Surveyor v3.97 software was used to analyze the sequences. These methods revealed six different sequences of the KAP6 gene, two different sequences of the KAP7 gene, and five different sequences of the KAP8 gene. Accordingly, three (with frequencies>1%) single nucleotide polymorphisms (SNPs) of the KAP6 gene, one SNP of the KAP7 gene, and five SNPs of the KAP8 gene were detected. Interestingly, some of these sequences were present in only certain sheep breeds, thereby suggesting that these special allele sequences could be used as candidate genes of wool characteristics in further studies.
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Affiliation(s)
- Y X Liu
- College of Life Sciences, China Jiliang University, Hangzhou, China
| | - G Q Shi
- The Key Sheep Breeding and Reproduction Biotechnology Laboratory of Xinjiang Production and Construction Group, Shihezi, China
| | - H X Wang
- College of Life Sciences, China Jiliang University, Hangzhou, China
| | - P C Wan
- The Key Sheep Breeding and Reproduction Biotechnology Laboratory of Xinjiang Production and Construction Group, Shihezi, China
| | - H Tang
- The Key Sheep Breeding and Reproduction Biotechnology Laboratory of Xinjiang Production and Construction Group, Shihezi, China
| | - H Yang
- The Key Sheep Breeding and Reproduction Biotechnology Laboratory of Xinjiang Production and Construction Group, Shihezi, China
| | - F Guan
- College of Life Sciences, China Jiliang University, Hangzhou, China
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Bai L, Shi G, Zhang L, Guan F, Ma Y, Li Q, Cong YS, Zhang L. Cav-1 deletion impaired hematopoietic stem cell function. Cell Death Dis 2014; 5:e1140. [PMID: 24675458 PMCID: PMC3973224 DOI: 10.1038/cddis.2014.105] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2013] [Revised: 01/27/2014] [Accepted: 02/10/2014] [Indexed: 12/21/2022]
Abstract
A tightly controlled balance between hematopoietic stem and progenitor cell compartments is required to maintain normal blood cell homeostasis throughout life, and this balance is regulated by intrinsic and extrinsic cellular factors. Cav-1 is a 22-kDa protein that is located in plasma membrane invaginations and is implicated in regulating neural stem cell and embryonic stem cell proliferation. However, the role of Cav-1 in hematopoietic stem cell (HSC) function is largely unknown. In this study, we used Cav-1−/− mice to investigate the role of Cav-1 in HSCs function during aging. The results showed that Cav-1−/− mice displayed a decreased percentage of B cells and an increased percentage of M cells in the bone marrow and peripheral blood, and these changes were due to an increased number of HSCs. FACS analysis showed that the numbers of Lin−Sca1+c-kit+ cells (LSKs), long-term HSCs (LT-HSCs), short-term HSCs and multipotent progenitors were increased in Cav-1−/− mice compared with Cav-1+/+ mice, and this increase became more pronounced with aging. An in vitro clonogenic assay showed that LT-HSCs from Cav-1−/− mice had reduced ability to self-renew. Consistently, an in vivo competitive transplantation assay showed that Cav-1−/− mice failed to reconstitute hematopoiesis. Moreover, a Cav-1 deletion disrupted the quiescence of LSKs and promoted cell cycle progression through G2/M phase. In addition, we found that Cav-1 deletion impaired the ability of HSCs to differentiate into mature blood cells. Taken together, these data suggest that Cav-1-deficient cells impaired HSCs quiescence and induced environmental alterations, which limited HSCs self-renewal and function.
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Affiliation(s)
- L Bai
- Key Laboratory of Human Disease Comparative Medicine, Ministry of Health, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences and Comparative Medical Center, Peking Union Medical College, Beijing 100021, China
| | - G Shi
- Key Laboratory of Human Disease Comparative Medicine, Ministry of Health, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences and Comparative Medical Center, Peking Union Medical College, Beijing 100021, China
| | - L Zhang
- Key Laboratory of Human Disease Comparative Medicine, Ministry of Health, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences and Comparative Medical Center, Peking Union Medical College, Beijing 100021, China
| | - F Guan
- Key Laboratory of Human Disease Comparative Medicine, Ministry of Health, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences and Comparative Medical Center, Peking Union Medical College, Beijing 100021, China
| | - Y Ma
- Key Laboratory of Human Disease Comparative Medicine, Ministry of Health, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences and Comparative Medical Center, Peking Union Medical College, Beijing 100021, China
| | - Q Li
- Institute of Aging Research, Hangzhou Normal University School of Medicine, Hangzhou 310036, China
| | - Y-S Cong
- Institute of Aging Research, Hangzhou Normal University School of Medicine, Hangzhou 310036, China
| | - L Zhang
- Key Laboratory of Human Disease Comparative Medicine, Ministry of Health, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences and Comparative Medical Center, Peking Union Medical College, Beijing 100021, China
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Guan F, Song X, Li J, Wang H, Liu Y, Jiang J, Zheng H, Jiang Y. Effects of PRNP polymorphisms on sperm quality traits in Chinese Holstein bulls. Journal of Applied Animal Research 2013. [DOI: 10.1080/09712119.2013.842486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Yu Q, Yang H, Guan F, Feng Y, Yang X, Zhu Y. Detection of IgG in sera of patients with schistosomiasis japonica by developing magnetic affinity enzyme-linked immunoassay based on recombinant 14-3-3 protein. Trans R Soc Trop Med Hyg 2013; 108:37-41. [DOI: 10.1093/trstmh/trt097] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Li YB, Guo CX, Wang ZC, Dong LH, Guan F, Liu Y, Wang HF, Sun ZW, Gong SL. Radiosensitization of breast cancer cells by TRAIL-endostatin-targeting gene therapy. Neoplasma 2013; 60:613-9. [PMID: 23906295 DOI: 10.4149/neo_2013_079] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
One of the key issues in cancer radiotherapy research is to sensitize tumor cells to the cell killing effects of ionizing radiation while leaving normal tissues intact. One potential approach to achieve this is gene-radiotherapy, i.e. a combination of radiation therapy and gene therapy. It is to choose certain exogenous radiation-inducible regulatory genes, for example, early growth response-1 (Egr-1), and transcript its downstream tumor-therapeutic genes under ionizing radiation so as to kill the tumor cells synergistically by the expressed gene products together after transfection and irradiation exposure. In this study, we engineered a plasmid encoding both TRAIL and endostatin under the control of the radiation-inducible Egr-1 promoter, and evaluated its anti-tumor efficacy in combination with radiotherapy. Our plasmid showed significant efficacy in up-regulating the levels of TRAIL and endostatin proteins after transfected into breast cancer cells and exposed to X-ray irradiation. The detected cellular effects in vitro manifested that TRAIL-endostatin-based gene therapy could enhance radiosensitizing effects in breast cancer cells in terms of tumor cell growth inhibition, promoting apoptosis and the induction of cell cycle arrest. In summary, our results suggest that TRAIL-endostain-targeting approach might be a promising method to sensitize solid tumors to radiation therapy.
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Lu A, Suofu Y, Guan F, Broderick JP, Wagner KR, Clark JF. Matrix metalloproteinase-2 deletions protect against hemorrhagic transformation after 1 h of cerebral ischemia and 23 h of reperfusion. Neuroscience 2013; 253:361-7. [PMID: 24035828 DOI: 10.1016/j.neuroscience.2013.08.068] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2013] [Revised: 08/23/2013] [Accepted: 08/24/2013] [Indexed: 01/22/2023]
Abstract
Although elevated matrix metalloproteinase (MMP)-2 levels were highly related to the degradation of tight junction (TJ) proteins and basal lamina and neuronal injury after ischemia, until very recently, little experimental evidence was available to test the role of the MMP-2 knockout (KO) in blood-brain-barrier (BBB) injury and the development of hemorrhage transformation (HT). Here, we assessed the role of the MMP-2 KO in BBB injury, HT and other brain injuries after 1h of ischemia and 23 h of reperfusion. Middle cerebral artery occlusion (MCAO) was performed in MMP-2 KO mice. Reperfusion was started 1h after the onset of MCAO. All mice were sacrificed 24h after the MCAO. MMP-2 deficiency reduced the decrease in protein levels of collagen IV and cellular membrane occludin (p<0.01 and 0.05 vs. wild-type (WT), respectively) and attenuated increase in cytosol occludin level in ischemic brain (p<0.01 vs. WT). The hemorrhage volume and brain infarction were significantly decreased in both the cortex and striatum in the MMP-2 KO mice (p<0.01 vs. WT). The MMP-2 KO also had reduced brain swelling in the cortex and improved neurological deficits (p<0.01 vs. WT). These studies provide direct evidence that targeting MMP-2 will effectively protect against collagen and occludin loss and HT after ischemia and reperfusion.
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Affiliation(s)
- A Lu
- Department of Neurology, University of Cincinnati, Cincinnati, OH 45267-0532, USA.
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Titt U, Guan F, Mirkovic D, Mohan R. SU-E-T-535: On the Out-Of-Field-Doses Caused by Secondary Particles From Light Ion Beams in Charged Particle Therapy. Med Phys 2013. [DOI: 10.1118/1.4814965] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Guan F, Mohan R, Dinh J, Kerr M, Perles L, Mirkovic D, Titt U, Zhu X, Gillin M, Meyn R, Lin S, Grosshans D. TH-F-105-03: Experimental Design and Preliminary Results for High-Resolution and High-Throughput In-Vitro Measurements of Proton RBE. Med Phys 2013. [DOI: 10.1118/1.4815816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Kerr M, Dhanesar S, Guan F, Taylor M, Zhu X, Gillin M, Amos R, Sahoo N. SU-E-T-48: Relative Proton Stopping Power Ratio Database for Common Dosimetry Phantom Materials. Med Phys 2013. [DOI: 10.1118/1.4814483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Khoo TL, Xiros N, Guan F, Orellana D, Holst J, Joshua DE, Rasko JEJ. Performance evaluation of the Abbott CELL-DYN Emerald for use as a bench-top analyzer in a research setting. Int J Lab Hematol 2013; 35:447-56. [PMID: 23279758 DOI: 10.1111/ijlh.12040] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2012] [Accepted: 10/17/2012] [Indexed: 11/29/2022]
Abstract
INTRODUCTION The CELL-DYN Emerald is a compact bench-top hematology analyzer that can be used for a three-part white cell differential analysis. To determine its utility for analysis of human and mouse samples, we evaluated this machine against the larger CELL-DYN Sapphire and Sysmex XT2000iV hematology analyzers. METHODS 120 human (normal and abnormal) and 30 mouse (normal and abnormal) samples were analyzed on both the CELL-DYN Emerald and CELL-DYN Sapphire or Sysmex XT2000iV analyzers. For mouse samples, the CELL-DYN Emerald analyzer required manual recalibration based on the histogram populations. RESULTS Analysis of the CELL-DYN Emerald showed excellent precision, within accepted ranges (white cell count CV% = 2.09%; hemoglobin CV% = 1.68%; platelets CV% = 4.13%). Linearity was excellent (R² ≥ 0.99), carryover was minimal (<1%), and overall interinstrument agreement was acceptable for both human and mouse samples. Comparison between the CELL-DYN Emerald and Sapphire analyzers for human samples or Sysmex XT2000iV analyzer for mouse samples showed excellent correlation for all parameters. CONCLUSION The CELL-DYN Emerald was generally comparable to the larger reference analyzer for both human and mouse samples. It would be suitable for use in satellite research laboratories or as a backup system in larger laboratories.
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Affiliation(s)
- T-L Khoo
- Gene and Stem Cell Therapy Program, Centenary Institute, Camperdown, NSW, Australia
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Chen QR, Guan F, Yan DJ, Lei DS, Fu L, Xia HS, Zhu YH, Chen ZW, Niu AO. The dynamic expression of allograft inflammatory factor-1 in hepatic tissues and splenic cells of BALB/c mice with Schistosoma japonicum infection. ACTA ACUST UNITED AC 2011; 79:33-41. [DOI: 10.1111/j.1399-0039.2011.01809.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Liu Y, Uboh CE, Soma LR, Li X, Guan F, You Y, Rudy JA, Chen JW. Analysis of Gabapentin in Equine Plasma with Measurement Uncertainty Estimation by Liquid Chromatography-Tandem Mass Spectrometry. J Anal Toxicol 2011; 35:75-84. [DOI: 10.1093/anatox/35.2.75] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Gao EJ, Zhang YX, Zhu MC, Liu HY, Huang Y, Zhang M, Su M, Guo MJ, Guan F, Gao XN, Wang ML. Synthesis and characterization of a novel complex [Pd(Bipy)2](Bpcc) · 11H2O. RUSS J COORD CHEM+ 2010. [DOI: 10.1134/s1070328410110114] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Gao EJ, Zhang M, Su M, Huang Y, Wang L, Zhang YX, Zhang Y, Guo MJ, Gao XN, Guan F, Dai L. Synthesis, crystal structure, and luminescence of a new complex [Co(6,6′-Bpbc)(Phen)(H2O)] · 2EtOH. RUSS J COORD CHEM+ 2010. [DOI: 10.1134/s107032841009006x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Lam W, Bussom S, Guan F, Jiang Z, Zhang W, Gullen EA, Liu SH, Cheng YC. The Four-Herb Chinese Medicine PHY906 Reduces Chemotherapy-Induced Gastrointestinal Toxicity. Sci Transl Med 2010; 2:45ra59. [DOI: 10.1126/scitranslmed.3001270] [Citation(s) in RCA: 228] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Gao EJ, Zhang Y, Guan F, Su M, Zhang M, Gao XN, Guo MJ, Zhang YX, Shi QZ, Sun TD, He WX. Synthesis and structural characterization of a novel organic-inorganic supermoleculer of [FeII(Phen)3]L2 · 2H2O complex. RUSS J COORD CHEM+ 2010. [DOI: 10.1134/s1070328410080099] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Wang X, Yu W, Nawaz A, Guan F, Sun S, Wang C. Palmitate induced insulin resistance by PKCtheta-dependent activation of mTOR/S6K pathway in C2C12 myotubes. Exp Clin Endocrinol Diabetes 2010; 118:657-61. [PMID: 20429048 DOI: 10.1055/s-0030-1252069] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The underlying mechanism of palmitate-induced insulin resistance in skeletal muscle cells is obscure. In this study, we showed that palmitate inhibited the insulin signaling in C2C12 myotubes, accompanied with the enhanced phosphorylation of protein kinase C-theta (PKCΘ). The inhibitory effects of palmitate on the insulin signaling were diminished in PKCΘ- and mTOR (mammalian target of rapamycin)-deficient C2C12 myotubes, and C2C12 myotubes pre-treated with rapamycin. In addition, the phosphorylation of mTOR and p70 ribosomal S6 kinase (S6K) enhanced by palmitate was attenuated in PKCΘ-deficient C2C12 myotubes and in C2C12 myotubes treated with PKCΘ pseudosubstrate. Taken together, our results suggested that palmitate-induced insulin resistance in C2C12 myotubes is mediated by PKCΘ/mTOR/S6K pathway.
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Affiliation(s)
- X Wang
- Department of Pathophysiology, Yunyang Medical College, Shiyan, China
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Guan F. Effects of electro-acupuncture on signal transduction pathway of hypothalamic neuroendocrine system in ovariectomized rats. ACTA ACUST UNITED AC 2009; 7:563-8. [DOI: 10.3736/jcim20090613] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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