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Yan WJ, Wang DB, Ren DQ, Wang LK, Hu ZY, Ma YB, Huang JW, Ding SL. AMPKα1 overexpression improves postoperative cognitive dysfunction in aged rats through AMPK-Sirt1 and autophagy signaling. J Cell Biochem 2019; 120:11633-11641. [PMID: 30775803 DOI: 10.1002/jcb.28443] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [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: 06/24/2018] [Revised: 12/01/2018] [Accepted: 12/06/2018] [Indexed: 01/24/2023]
Abstract
Postoperative cognitive dysfunction (POCD) is a common complication in elderly patients who undergo surgery involving anesthesia. Its underlying mechanisms remain unclear. Autophagy plays an important role in the damage and repair of the nervous system and is associated with the development of POCD. Using a rat model, adenosine monophosphate-activated protein kinase α1 (AMPKα1), an important autophagy regulator, was found to be significantly downregulated in rats with POCD that was induced by sevoflurane anesthesia or by appendectomy. Overexpression of AMPKα1-ameliorated POCD, as indicated by decreased escape latencies and increased target quadrant swimming times, swimming distances, and platform crossing times during Morris water maze tests. AMPKα1 overexpression activated autophagy signals by increasing the expression of light chain 3 II (LC3-II) and Beclin1 and decreasing the expression of p62 in the hippocampus of rats with POCD. Moreover, blocking autophagy by 3-methyladenine partly attenuated AMPKα1-mediated POCD improvement. Furthermore, overexpression of AMPKα1 could upregulate the expression of p-AMPK and Sirt1 in the hippocampus of rats with POCD. Intriguingly, inhibiting AMPK signals via Compound C effectively attenuated AMPKα1-mediated POCD improvement, concomitant with the downregulation of p-AMPK, Sirt1, LC3-II, and Beclin1 and the upregulation of p62. We thus concluded that overexpression of AMPKα1 can improve POCD via the AMPK-Sirt1 and autophagy signaling pathway.
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Affiliation(s)
- Wen-Jun Yan
- Department of Anesthesiology, Gansu Provincial Hospital, Lanzhou, Gansu, China
| | - Da-Bin Wang
- Department of Anesthesiology, Gansu Provincial Hospital, Lanzhou, Gansu, China
| | - Dong-Qing Ren
- Department of Anesthesiology, Gansu Provincial Hospital, Lanzhou, Gansu, China
| | - Ling-Kai Wang
- Department of Anesthesiology, Gansu Provincial Hospital, Lanzhou, Gansu, China
| | - Zhong-Yuan Hu
- Department of Anesthesiology, Gansu Provincial Hospital, Lanzhou, Gansu, China
| | - Ya-Bing Ma
- Department of Anesthesiology, Gansu Provincial Hospital, Lanzhou, Gansu, China
| | - Jin-Wen Huang
- Department of Anesthesiology, Gansu Provincial Hospital, Lanzhou, Gansu, China
| | - Shao-Li Ding
- Department of Anesthesiology, Gansu Provincial Hospital, Lanzhou, Gansu, China
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Cheng K, Ren DQ, Yi J, Zhou XG, Yang WQ, Chen YB, Li YQ, Huang XF, Zeng GY. Pulsed electromagnetic wave exposure induces ultrastructural damage and upregulated expression of heat shock protein 70 in the rat adenohypophysis. Mol Med Rep 2015; 12:2175-80. [PMID: 25891763 DOI: 10.3892/mmr.2015.3627] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2013] [Accepted: 09/04/2014] [Indexed: 11/06/2022] Open
Abstract
The aim of the present study was to investigate the ultrastructural damage and the expression of heat shock protein 70 (HSP70) in the rat adenohypophysis following pulsed electromagnetic wave (PEMW) exposure. The rats were randomly divided into four groups: Sham PEMW exposure, 1 x 10(4) pulses of PEMW exposure, 1 x 10(5) pulses of PEMW exposure and 3 x 10(5) pulses of PEMW exposure. Whole body radiation of 1 x 10(4) pulses, 1 x 10(5) pulses and 3 x 10(5) pulses of PEMW were delivered with a field strength of 100 kV/m. The rats in each group (n=6 in each) were sacrificed 12, 24, 48 and 96 h after PEMW exposure. Transmission electron microscopy was then used to detect the ultrastructural changes and immunocytochemistry was used to examine the expression of HSP70. Cellular damage, including mitochondrial vacuolation occurred as early as 12 h after PEMW exposure.More severe cellular damages, including cell degeneration and necrosis, occurred 24 and 48 h after PEMW exposure. The PEMW-induced cellular damage increased as the number of PEMW pulses increased. In addition, the expression of HSP70 significantly increased following PEMW exposure and peaked after 12 h. These findings suggested that PEMW induced ultrastructural damages in the rat adenohypophysis and that HSP70 may have contributed to the PEMW-induced adenohypophyseal damage.
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Affiliation(s)
- Kang Cheng
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Dong-Qing Ren
- Department of Radiation Medicine and the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Jun Yi
- Department of Endocrine Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Xiao-Guang Zhou
- Department of Urology, Bayi Children's Hospital Affiliated to People's Liberation Army General Hospital, Beijing 100700, P.R. China
| | - Wen-Qing Yang
- Lintong Sanatorium of Chinese PLA Lanzhou Command, Xi'an, Shaanxi 710600, P.R. China
| | - Yong-Bin Chen
- Department of Radiation Medicine and the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Yong-Qiang Li
- Electron Microscopy Center, Faculty of Preclinical Medicine, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Xiao-Feng Huang
- Electron Microscopy Center, Faculty of Preclinical Medicine, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Gui-Ying Zeng
- Department of Radiation Medicine and the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
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Zhu JJ, Liu XF, Zhang PL, Yang JZ, Wang J, Qin Y, Zhang GL, Ren DQ, Cui CL, Guo XG. Anatomical information for intercostobrachial nerve preservation in axillary lymph node dissection for breast cancer. Genet Mol Res 2014; 13:9315-23. [PMID: 24615083 DOI: 10.4238/2014.january.24.13] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
This study aimed to provide additional anatomical information for axillary lymph node dissection (ALND) through in vivo anatomy studies of intercostobrachial nerve (ICBN) preservation in order to provide theoretical and practical experience for clinicians. A total of 156 patients with breast cancer underwent ALND at the Department of Gynecology of Baotou Tumor Hospital between June 2009 and March 2010. The origin, destination, main source, length, branch type, and direction of ICBN in axilla were observed, as well as its relationship with adjacent major blood vessels and nerves within the axilla. There were 120 cases of single trunk, 23 cases of double trunks, 9 cases of multiple trunks, and 4 cases without trunks in 156 patients with ICBN preservation. The transverse diameter at the origin of the ICBN was 1.89 ± 0.44 mm with a length of 94.45 ± 12.08 mm; the distances were 77.19 ± 21.04 mm, 29.34 ± 6.73 mm, 90.04 ± 13.13 mm, and 28.63 ± 13.01 mm from origin to the inferior margin at the midpoint of the clavicle, inferior margin of the axillary vein, the bottom of axilla, and branch point, respectively. The identification, dissection, and preservation of ICBN was simple and easy in a modified radical mastectomy for breast cancer and breast-conserving surgery, which only took 10-20 min, but effectively reduced the incidence of post-mastectomy pain syndrome and significantly improved the quality of life for patients after surgery.
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Affiliation(s)
- J J Zhu
- Department of Surgical Oncology, Cancer Hospital of Baotou City, Baotou City, Inner Mongolia, China
| | - X F Liu
- Department of Surgical Oncology, Cancer Hospital of Baotou City, Baotou City, Inner Mongolia, China
| | - P L Zhang
- Department of Surgical Oncology, Cancer Hospital of Baotou City, Baotou City, Inner Mongolia, China
| | - J Z Yang
- Department of Surgical Oncology, Cancer Hospital of Baotou City, Baotou City, Inner Mongolia, China
| | - J Wang
- Department of Anti-Cancer Association, Cancer Hospital of Baotou City, Baotou City, Inner Mongolia, China
| | - Y Qin
- Department of Surgical Oncology, Cancer Hospital of Baotou City, Baotou City, Inner Mongolia, China
| | - G L Zhang
- Department of Surgical Oncology, Cancer Hospital of Baotou City, Baotou City, Inner Mongolia, China
| | - D Q Ren
- Department of Surgical Oncology, Cancer Hospital of Baotou City, Baotou City, Inner Mongolia, China
| | - C L Cui
- Department of Anatomy (Teaching and Research), Baotou Medical College, Science and Technology University of Baotou, Baotou City, Inner Mongolia, China
| | - X G Guo
- Department of Surgical Oncology, Cancer Hospital of Baotou City, Baotou City, Inner Mongolia, China
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Abstract
PURPOSE To investigate the effects of exposure to electromagnetic pulses (EMP) on functional indices of the cardiovascular system in male Sprague-Dawley rats. MATERIALS AND METHODS A tapered parallel plate Gigahertz Transverse Electromagnetic cell (GTEM cell) with a flared rectangular coaxial transmission line was used to expose the rats to EMP (0.5 pps, total 200 pulses and whole-body averaged specific absorption rate 50 mW/kg at 200 kV/m or 75 mW/kg at 400 kV/m). Concurrent sham-exposed animals were used as controls. Cardiovascular functions, namely, heart rate, and systolic, mean and diastolic blood pressures were measured immediately and up to 4 weeks post-exposure using a non-invasive tail-cuff photoelectric sensor sphygmomanometer. RESULTS The heart rates in sham- and EMP-exposed rats were not significantly changed. In the exposed rats, increased systolic blood pressure (SBP) occurred at 0 h and decreased SBP occurred at 1 day and 3 days after exposure. Significantly higher diastolic blood pressure (DBP) was found at 0 h and significantly lower DBP was found at 12 h, 1 day, and 1 month after exposure. Significantly higher mean arterial pressure (MAP) was noted at 0 h and significantly lower MAP was noted at 1 day. CONCLUSIONS Significant alterations in arterial blood pressure were observed in rats exposed to EMP exposure while heart rate was not altered.
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Affiliation(s)
- Bao-Feng Li
- Department of Radiation Medicine, Fourth Military Medical University, Shannxi Province, China
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Cui DX, Zeng GY, Wang F, Xu JR, Ren DQ, Guo YH, Tian FR, Yan XJ, Hou Y, Su CZ. Mechanism of exogenous nucleic acids and their precursors improving the repair of intestinal epithelium after gamma-irradiation in mice. World J Gastroenterol 2000; 6:709-717. [PMID: 11819679 PMCID: PMC4688848 DOI: 10.3748/wjg.v6.i5.709] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2000] [Revised: 05/20/2000] [Accepted: 06/02/2000] [Indexed: 02/06/2023] Open
Abstract
AIM:To clone expressed genes associated with repair of irradiation-damaged mice intestinal gland cells treated by small intestinal RNA, and to explore the molecular mechanism of exogenous nucleic acids improving repair of intestinal crypt.METHODS:The animal mode of test group and control group was established, forty-five mice being irradiated by gamma ray were treated with small intestinal RNA as test group, forty mice being irradiated by gamma ray were treated with physiological saline as control group,five mice without irradiation were used as normal control, their jejunal specimens were collected respectively at 6h, 12h,24h, 4d and 8d after irradiation. Then by using LD-PCR based on subtractive hybridization, these gene fragments differentially expressed between test group and control group were obtained, and then were cloned into T vectors as well as being sequenced. Obtained sequences were screened against. GeneBank, if being new sequences, they were submitted to GeneBank.RESULTS:Ninety clones were associated with repair of irradiation-damaged intestinal gland cells treated by intestinal RNA. These clones from test group of 6h, 12h, 24h, 4d and 8d were respectively 18, 22, 25, 13, 12. By screening against GeneBank, 18 of which were new sequences, the others were dramatically similar to the known sequences, mainly similar to hsp, Nmi,Dutt1, alkaline phosphatase, homeobox, anti-CEA ScFv antibody, arginine/serine kinase and BMP-4,repA. Eighteen gene fragments were new sequences,their accept numbers in GeneBank were respectively AF240164-AF240181.CONCLUSION:Ninety clones were obtained to be associated with repair of irradiation damaged mice intestinal gland cells treated by small intestinal RNA, which may be related to abnormal expression of genes and matched proteins of hsp, Nmi, Dutt1, Na, K-ATPase,alkalineph-osphatase, glkA, single stranded replicative centromeric gene as well as 18 new sequences.
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Zhou Z, Ren DQ, Peng WQ, Xia GL. [Introduction and cultivation of Cinnamomum cassia Presl]. Zhongguo Zhong Yao Za Zhi 1994; 19:655-60, 701-2. [PMID: 7893383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Based on the study of biological characteristics, growth determination, quality examination, harvest and processing features, it has been proved that the introduction and cultivation of Cinnamomum cassial are feasible in such southern subtropics as the valleys along the Yangtze River in the southern part of Sichuan province. Specific cultivating techniques to adapt to the local climate are reviewed in the paper.
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Affiliation(s)
- Z Zhou
- Institute of Medicinal Plant Cultivation, Sichuan Academy of Traditional Chinese Medicine and Pharmacy, Nanchuan
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