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Zhang ZX, Zhou YJ, Gu P, Zhao W, Chen HX, Wu RY, Zhou LY, Cui QZ, Sun SK, Zhang LQ, Zhang K, Xu HJ, Chai XQ, An SJ. Exosomes derived from human umbilical cord mesenchymal stem cells alleviate Parkinson's disease and neuronal damage through inhibition of microglia. Neural Regen Res 2023; 18:2291-2300. [PMID: 37056150 DOI: 10.4103/1673-5374.368300] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [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: 04/15/2023] Open
Abstract
Microglia-mediated inflammatory responses have been shown to play a crucial role in Parkinson's disease. In addition, exosomes derived from mesenchymal stem cells have shown anti-inflammatory effects in the treatment of a variety of diseases. However, whether they can protect neurons in Parkinson's disease by inhibiting microglia-mediated inflammatory responses is not yet known. In this study, exosomes were isolated from human umbilical cord mesenchymal stem cells and injected into a 6-hydroxydopamine-induced rat model of Parkinson's disease. We found that the exosomes injected through the tail vein and lateral ventricle were absorbed by dopaminergic neurons and microglia on the affected side of the brain, where they repaired nigral-striatal dopamine system damage and inhibited microglial activation. Furthermore, in an in vitro cell model, pretreating lipopolysaccharide-stimulated BV2 cells with exosomes reduced interleukin-1β and interleukin-18 secretion, prevented the adoption of pyroptosis-associated morphology by BV2 cells, and increased the survival rate of SH-SY5Y cells. Potential targets for treatment with human umbilical cord mesenchymal stem cells and exosomes were further identified by high-throughput microRNA sequencing and protein spectrum sequencing. Our findings suggest that human umbilical cord mesenchymal stem cells and exosomes are a potential treatment for Parkinson's disease, and that their neuroprotective effects may be mediated by inhibition of excessive microglial proliferation.
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Affiliation(s)
- Zhong-Xia Zhang
- Department of Neurology, the First Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei Province, China
| | - Yong-Jie Zhou
- Research Center, Hebei University of Chinese Medicine, Shijiazhuang, Hebei Province, China
| | - Ping Gu
- Department of Neurology, the First Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei Province, China
| | - Wei Zhao
- Research Center, Hebei University of Chinese Medicine, Shijiazhuang, Hebei Province, China
| | - Hong-Xu Chen
- Research Center, Hebei University of Chinese Medicine, Shijiazhuang, Hebei Province, China
| | - Ruo-Yu Wu
- Research Center, Hebei University of Chinese Medicine, Shijiazhuang, Hebei Province, China
| | - Lu-Yang Zhou
- Research Center, Hebei University of Chinese Medicine, Shijiazhuang, Hebei Province, China
| | - Qing-Zhuo Cui
- Research Center, Hebei University of Chinese Medicine, Shijiazhuang, Hebei Province, China
| | - Shao-Kang Sun
- Research Center, Hebei University of Chinese Medicine, Shijiazhuang, Hebei Province, China
| | - Lin-Qi Zhang
- Research Center, Hebei University of Chinese Medicine, Shijiazhuang, Hebei Province, China
| | - Ke Zhang
- Research Center, Hebei University of Chinese Medicine, Shijiazhuang, Hebei Province, China
| | - Hong-Jun Xu
- Research Center, Hebei University of Chinese Medicine, Shijiazhuang, Hebei Province, China
| | - Xi-Qing Chai
- Department of Neurology, the First Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei Province, China
| | - Sheng-Jun An
- Research Center, Hebei University of Chinese Medicine, Shijiazhuang, Hebei Province, China
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Miao HJ, Sun SK, Tian YY, Yang YQ, Wang SH, Bai S, Chen W, Mao C, Liang SX, Yan YB. Oncologic safety of the pedicled submental island flap for reconstruction in oral tongue squamous cell carcinoma: An analysis of 101 cases. Oral Oncol 2023; 140:106395. [PMID: 37068412 DOI: 10.1016/j.oraloncology.2023.106395] [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: 10/09/2022] [Revised: 01/31/2023] [Accepted: 04/10/2023] [Indexed: 04/19/2023]
Abstract
OBJECTIVE To evaluate whether the pedicle submental island flap (SIF) can be safely used in the oral tongue squamous cell carcinoma (OTSCC) patients with pathologically node-positive (pN+) neck, especially pN+ at level I. METHODS Retrospectively, 101 OTSCC patients with SIF reconstruction were enrolled. Oncological outcomes included the total locoregional recurrence, the SIF related locoregional recurrence (SRLR) which referred to the local recurrence at flap and ipsilateral neck recurrence at level I, recurrence free survival (RFS), overall survival (OS), and disease specific survival (DSS). RESULTS Sixty-one patients were pathologically node-negative (pN0) and 40 were pN+. Thirteen patients experienced locoregional recurrence, of which 5 had a SRLR. The pN+ group had a significantly higher locoregional recurrence rate, lower 5-year RFS, OS and DSS than pN0 group (P < 0.05). Patients with pN0 had a significantly higher neck RFS when compared to those with pN+ either at level I (P = 0.005) or at other levels (P < 0.001). However, the neck RFS was similar between the two subgroups of pN+ (P = 0.550). Especially, patients with pN+ at level I had a significantly higher SRLR rate (P = 0.006) compared to those with pN0 at level I. Multivariate analysis showed that pN+ was an unfavorable factor for tumor recurrence and OS. CONCLUSION Our data did not support the use of SIF in OTSCC patients with pN+ neck at level I due to an significantly increased SRLR rate compared to those with pN0 neck at level I.
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Affiliation(s)
- He-Jing Miao
- Department of Oromaxillofacial-Head and Neck Surgery, Tianjin Stomatological Hospital, 75 Dagu Road, Heping District, Tianjin 300041, PR China; Tianjin Key Laboratory of Oral and Maxillofacial Function Reconstruction, 75 Dagu Road, Heping District, Tianjin 300041, PR China
| | - Shao-Kang Sun
- Department of Oromaxillofacial-Head and Neck Surgery, Tianjin Stomatological Hospital, 75 Dagu Road, Heping District, Tianjin 300041, PR China; Tianjin Key Laboratory of Oral and Maxillofacial Function Reconstruction, 75 Dagu Road, Heping District, Tianjin 300041, PR China
| | - Yuan-Yuan Tian
- Department of Oromaxillofacial-Head and Neck Surgery, Tianjin Stomatological Hospital, 75 Dagu Road, Heping District, Tianjin 300041, PR China; Tianjin Key Laboratory of Oral and Maxillofacial Function Reconstruction, 75 Dagu Road, Heping District, Tianjin 300041, PR China
| | - Yun-Qi Yang
- Stomatology Center, The First People's Hospital of Shunde, No.1 Azi Road, Shunde District, Foshan 528000, PR China
| | - Shi-Hua Wang
- Tianjin Key Laboratory of Oral and Maxillofacial Function Reconstruction, 75 Dagu Road, Heping District, Tianjin 300041, PR China; Department of Operative Dentistry and Endodontics, Tianjin Stomatological Hospital, 75 Dagu Road, Heping District, Tianjin 300041, PR China
| | - Shuang Bai
- Department of Oromaxillofacial-Head and Neck Surgery, Tianjin Stomatological Hospital, 75 Dagu Road, Heping District, Tianjin 300041, PR China; Tianjin Key Laboratory of Oral and Maxillofacial Function Reconstruction, 75 Dagu Road, Heping District, Tianjin 300041, PR China
| | - Wei Chen
- Department of Oromaxillofacial-Head and Neck Surgery, Tianjin Stomatological Hospital, 75 Dagu Road, Heping District, Tianjin 300041, PR China; Tianjin Key Laboratory of Oral and Maxillofacial Function Reconstruction, 75 Dagu Road, Heping District, Tianjin 300041, PR China
| | - Chi Mao
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, 22 Zhongguancun South Avenue, Haidian District, Beijing 100081, PR China.
| | - Su-Xia Liang
- Tianjin Key Laboratory of Oral and Maxillofacial Function Reconstruction, 75 Dagu Road, Heping District, Tianjin 300041, PR China; Department of Operative Dentistry and Endodontics, Tianjin Stomatological Hospital, 75 Dagu Road, Heping District, Tianjin 300041, PR China.
| | - Ying-Bin Yan
- Department of Oromaxillofacial-Head and Neck Surgery, Tianjin Stomatological Hospital, 75 Dagu Road, Heping District, Tianjin 300041, PR China; Tianjin Key Laboratory of Oral and Maxillofacial Function Reconstruction, 75 Dagu Road, Heping District, Tianjin 300041, PR China.
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Li C, Wu PT, Li XL, Zhou TW, Sun SK, Wang YB, Luan XB, Yu X. Spatial and temporal evolution of climatic factors and its impacts on potential evapotranspiration in Loess Plateau of Northern Shaanxi, China. Sci Total Environ 2017; 589:165-172. [PMID: 28258753 DOI: 10.1016/j.scitotenv.2017.02.122] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Revised: 01/05/2017] [Accepted: 02/14/2017] [Indexed: 06/06/2023]
Abstract
Agriculture is very sensitive to climate change, and correct forecasting of climate change is a great help to accurate allocation of irrigation water. The use of irrigation water is influenced by crop water demand and precipitation. Potential evapotranspiration (ET0) is a measure of the ability of the atmosphere to remove water from the surface through the processes of evaporation and transpiration, assuming no control on water supply. It plays an important role in assessing crop water requirements, regional dry-wet conditions, and other factors of water resource management. This study analyzed the spatial and temporal evolution processes and characteristics of major meteorological parameters at 10 stations in the Loess Plateau of northern Shaanxi (LPNS). By using the Mann-Kendall trend test with trend-free pre-whitening and the ArcGIS platform, the potential evapotranspiration of each station was quantified by using the Penman-Monteith equation, and the effects of climatic factors on potential evapotranspiration were assessed by analyzing the contribution rate and sensitivity of the climatic factors. The results showed that the climate in LPNS has become warmer and drier. In terms of the sensitivity of ET0 to the variation of each climatic factor in LPNS, relative humidity (0.65) had the highest sensitivity, followed by daily maximum temperature, wind speed, sunshine hours, and daily minimum temperature (-0.05). In terms of the contribution rate of each factor to ET0, daily maximum temperature (5.16%) had the highest value, followed by daily minimum temperature, sunshine hours, relative humidity, and wind speed (1.14%). This study provides a reference for the management of agricultural water resources and for countermeasures to climate change. According to the climate change and the characteristics of the study area, farmers in the region should increase irrigation to guarantee crop water demand.
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Affiliation(s)
- C Li
- College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling, 712100, China; Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - P T Wu
- Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A&F University, Yangling 712100, Shaanxi, China; Institute of Water Saving Agriculture in Arid regions of China, Northwest A&F University, Yangling 712100, Shaanxi, China.
| | - X L Li
- Institute of Water Saving Agriculture in Arid regions of China, Northwest A&F University, Yangling 712100, Shaanxi, China; Institute of Soil and Water Conservation, Northwest A&F University, Yangling 712100, China
| | - T W Zhou
- Institute of Water Saving Agriculture in Arid regions of China, Northwest A&F University, Yangling 712100, Shaanxi, China; Institute of Soil and Water Conservation, Northwest A&F University, Yangling 712100, China
| | - S K Sun
- College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling, 712100, China; Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A&F University, Yangling 712100, Shaanxi, China; Institute of Water Saving Agriculture in Arid regions of China, Northwest A&F University, Yangling 712100, Shaanxi, China.
| | - Y B Wang
- College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling, 712100, China; Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A&F University, Yangling 712100, Shaanxi, China; Institute of Water Saving Agriculture in Arid regions of China, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - X B Luan
- Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, China
| | - X Yu
- College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling, 712100, China
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Wang YB, Wu PT, Engel BA, Sun SK. Application of water footprint combined with a unified virtual crop pattern to evaluate crop water productivity in grain production in China. Sci Total Environ 2014; 497-498:1-9. [PMID: 25112819 DOI: 10.1016/j.scitotenv.2014.07.089] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [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: 04/11/2014] [Revised: 07/22/2014] [Accepted: 07/22/2014] [Indexed: 06/03/2023]
Abstract
Water shortages are detrimental to China's grain production while food production consumes a great deal of water causing water crises and ecological impacts. Increasing crop water productivity (CWP) is critical, so China is devoting significant resources to develop water-saving agricultural systems based on crop planning and agricultural water conservation planning. A comprehensive CWP index is necessary for such planning. Existing indices such as water use efficiency (WUE) and irrigation efficiency (IE) have limitations and are not suitable for the comprehensive evaluation of CWP. The water footprint (WF) index, calculated using effective precipitation and local water use, has advantages for CWP evaluation. Due to regional differences in crop patterns making the CWP difficult to compare directly across different regions, a unified virtual crop pattern is needed to calculate the WF. This project calculated and compared the WF of each grain crop and the integrated WFs of grain products with actual and virtual crop patterns in different regions of China for 2010. The results showed that there were significant differences for the WF among different crops in the same area or among different areas for the same crop. Rice had the highest WF at 1.39 m(3)/kg, while corn had the lowest at 0.91 m(3)/kg among the main grain crops. The WF of grain products was 1.25 m(3)/kg in China. Crop patterns had an important impact on WF of grain products because significant differences in WF were found between actual and virtual crop patterns in each region. The CWP level can be determined based on the WF of a virtual crop pattern, thereby helping optimize spatial distribution of crops and develop agricultural water savings to increase CWP.
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Affiliation(s)
- Y B Wang
- Key Laboratory for Agricultural Soil and Water Engineering in Arid Area of Ministry of Education, Northwest A&F University, Yangling, Shaanxi 712100, PR China; Institute of Water Saving Agriculture in Arid Regions of China, Northwest A&F University, Yangling, Shaanxi 712100, PR China; Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, IN 47906, USA.
| | - P T Wu
- Key Laboratory for Agricultural Soil and Water Engineering in Arid Area of Ministry of Education, Northwest A&F University, Yangling, Shaanxi 712100, PR China; Institute of Water Saving Agriculture in Arid Regions of China, Northwest A&F University, Yangling, Shaanxi 712100, PR China.
| | - B A Engel
- Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, IN 47906, USA.
| | - S K Sun
- Key Laboratory for Agricultural Soil and Water Engineering in Arid Area of Ministry of Education, Northwest A&F University, Yangling, Shaanxi 712100, PR China; Institute of Water Saving Agriculture in Arid Regions of China, Northwest A&F University, Yangling, Shaanxi 712100, PR China.
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Lin SB, Ts'o PO, Sun SK, Choo KB, Yang FY, Lim YP, Tsai HL, Au LC. Inhibition of thymidylate synthase activity by antisense oligodeoxynucleotide and possible role in thymineless treatment. Mol Pharmacol 2001; 60:474-9. [PMID: 11502877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023] Open
Abstract
Thymidylate synthase (TS) is an important target for chemotherapeutic treatment of cancer. However, efficacy of TS-targeted anticancer drugs is limited by the development of drug resistance as a result of TS gene amplification. In this work, a phosphorothioated antisense oligonucleotide (ODN), designated ATS-2, was used to suppress cellular synthesis of TS. ATS-2 at 0.2 microM concentration was mixed with lipofectin in a charge ratio of 1:1 and was used to treat the human embryonic kidney (HEK) cell line. A reduction of TS mRNA and protein was achieved. Furthermore, a dose-dependent reduction of cumulative viable cells of up to 98% was observed. Flow cytometer analysis of cell cycle progression indicates that ATS-2-treated cells were arrested and went into apoptosis at the S phase, possibly because of thymidine shortage, suggesting that ATS-2 is specifically effective for dividing cells. When used in combination with the anticancer drug FdUrd, ATS-2 exerted a additive inhibitory effect on cellular proliferation. To elucidate the possible role of cellular thymidine kinase (TdR kinase) in ATS-2 treatment, a second cell line, HeLa, was used. Both HEK and HeLa have similar rates of cell division and ODN uptake. In contrast to HEK, which was shown to have very low levels of TdR kinase activity in [(3)H]thymidine incorporation experiments, [(3)H]thymidine incorporation in HeLa was 15-fold greater than that of HEK. We found that HeLa cells were sensitive to FdUrd but were rather resistant to ATS-2. On the contrary, HEK cells were sensitive to ATS-2 but insensitive to FdUrd. Effects of ATS-2 and FdUrd are, therefore, complementary in thymineless treatment too.
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Affiliation(s)
- S B Lin
- School of Medical Technology, National Taiwan University, Taipei, Taiwan, Republic of China
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