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Yang H, Xie C, Wu YF, Cheng Y, Zhu DS, Guan YT. N 6-Methyladenosine (m 6A) Methylation Is Associated with the Immune Microenvironments in Acute Intracerebral Hemorrhage (ICH). Mol Neurobiol 2024; 61:1781-1793. [PMID: 37776495 DOI: 10.1007/s12035-023-03643-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Accepted: 09/06/2023] [Indexed: 10/02/2023]
Abstract
Researchers have recently found that N6-methyladenosine (m6A) is a type of internal posttranscriptional modification that is essential in mammalian mRNA. However, the features of m6A RNA methylation in acute intracerebral hemorrhage (ICH) remain unknown. To explore differential methylations and to discover their functions in acute ICH patients, we recruited three acute ICH patients, three healthy controls, and an additional three patients and healthy controls for validation. The m6A methylation levels in blood samples from the two groups were determined by ultrahigh-performance liquid chromatography coupled with triple quadruple mass spectrometry (UPLC-QQQ-MS). Methylated RNA immunoprecipitation sequencing (MeRIP-seq) was employed to identify differences in m6A modification, and the differentially expressed m6A-modified genes were confirmed by MeRIP-qPCR. We found no significant differences in the total m6A levels between the two groups but observed differential methylation peaks. Compared with the control group, the coding genes showing increased methylation following acute ICH were mostly involved in processes connected with osteoclast differentiation, the neurotrophin signaling pathway, and the spliceosome, whereas genes with reduced m6A modification levels after acute ICH were found to be involved in the B-cell and T-cell receptor signaling pathways. These results reveal that differentially m6A-modified genes may influence the immune microenvironments in acute ICH.
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Affiliation(s)
- Hong Yang
- Department of Neurology, The First Rehabilitation Hospital of Shanghai, School of Medicine, Tongji University, Shanghai, China
| | - Chong Xie
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yi-Fan Wu
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yuan Cheng
- Department of Neurology, The First Rehabilitation Hospital of Shanghai, School of Medicine, Tongji University, Shanghai, China
| | - De-Sheng Zhu
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yang-Tai Guan
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
- Department of Neurology, Shanghai Yangzhi Rehabilitation Hospital, School of Medicine, Tongji University, Shanghai, China.
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Zheng ZQ, Liu YY, Luo WW, Zhang HW, Wang YY, Wang H, Li XM, Chen HP, Li Y, Jin WD, Huang H, Guan YT, Zhang HM, Li SK, Ren JA, Wang PG. [Investigation and factor analysis of postoperative surgical site infections in emergency abdominal surgery in China from 2018 to 2021 based on Chinese SSI Surveillance]. Zhonghua Wei Chang Wai Ke Za Zhi 2023; 26:827-836. [PMID: 37709690 DOI: 10.3760/cma.j.cn441530-20230619-00216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 09/16/2023]
Abstract
Objective: We investigated the incidence of surgical site infection (SSI) following emergency abdominal surgery (EAS) in China and further explored its risk factors, providing a reference for preventing and controlling SSI after EAS. Methods: This was an observational study. Data of patients who had undergone EAS and been enrolled in the Chinese SSI Surveillance Program during 2018-2021were retrospectively analyzed. All included patients had been followed up for 30 days after surgery. The analyzed data consisted of relevant patient characteristics and perioperative clinical data, including preoperative hemoglobin, albumin, and blood glucose concentrations, American Society of Anesthesiologists (ASA) score, grade of surgical incision, intestinal preparation, skin preparation, location of surgical site, approach, and duration. The primary outcome was the incidence of SSI occurring within 30 days following EAS. SSI was defined as both superficial and deep incisional infections and organ/space infections, diagnoses being supported by results of microbiological culture of secretions and pus. Secondary outcomes included 30-day postoperative mortality rates, length of stay in the intensive care unit (ICU), duration of postoperative hospitalization, and associated costs. The patients were classified into two groups, SSI and non-SSI, based on whether an infection had been diagnosed. Univariate and multivariate logistic regression analyses were performed to identify risk factors associated with SSI following EAS. Results: The study cohort comprised 5491 patients who had undergone EAS, comprising 3169 male and 2322 female patients. SSIs were diagnosed in 168 (3.1%) patients after EAS (SSI group); thus, the non-SSI group consisted of 5323 patients. The SSIs comprised superficial incision infections in 69 (41.1%), deep incision infections in 51 (30.4%), and organ or space infections in 48 (28.6%). Cultures of secretions and pus were positive in 115 (68.5%) cases. The most frequently detected organism was Escherichia coli (47/115; 40.9%). There were no significant differences in sex or body mass index between the SSI and non-SSI groups (both P>0.05). However, the proportion of individuals aged 60 years or older was significantly greater in the SSI than in the non-SSI group (49.4% [83/168] vs. 27.5% [1464/5323), χ2=38.604, P<0.001). Compared with the non-SSI group, the SSI group had greater proportions of patients with diabetes (11.9% [20/168] vs. 4.8% [258/5323], χ2=16.878, P<0.001), hypertension (25.6% [43/168] vs. 12.2% [649/5323], χ2=26.562, P<0.001); hemoglobin <110 g/L (27.4% [46/168] vs. 13.1% [697/5323], χ2=28.411, P<0.001), and albuminemia <30 g/L (24.4% [41/168] vs. 5.9% [316/5323], χ2=91.352, P<0.001), and a reduced rate of preoperative skin preparation (66.7% [112/168] vs. 75.9% [4039/5323], χ2=7.491, P=0.006). Furthermore, fewer patients in the SSI group had preoperative ASA scores of between one and two (56.0% [94/168] vs. 88.7% [4724/5323], χ2=162.869, P<0.001) in the non-SSI group. The incidences of contaminated and infected incisions were greater in the SSI group (63.1% [106/168] vs. 38.6% [2056/5323], χ2=40.854, P<0.001). There was a significant difference in surgical site distribution between the SSI and non-SSI groups (small intestine 29.8% [50/168] vs. 10.6% [565/5323], colorectal 26.2% [44/168] vs. 5.6% [298/5 323], and appendix 24.4% [41/168] vs. 65.1% [3465/5323]) χ2=167.897, P<0.001), respectively. There was a significantly lower proportion of laparoscope or robotic surgery in the non-SSI group (24.4 % [41/168] vs. 74.2% [3949/5323], χ2=203.199, P<0.001); the percentage of operations of duration less than 2 hours was significantly lower in the SSI than non-SSI group (35.7% [60/168] vs. 77.4% [4119/5323], χ2=155.487, P<0.001). As to clinical outcomes, there was a higher 30-day postoperative mortality rate (3.0%[5/168] vs. 0.2%[10/5323], χ2=36.807, P<0.001) and higher postoperative ICU occupancy rate (41.7% [70/168] vs. 19.7% [1046/5323], χ2=48.748, P<0.001) in the SSI group. The median length of stay in the ICU (0[2] vs. 0[0] days, U=328597.000, P<0.001), median total length of stay after surgery (16[13] vs. 6[5] days, U=128146.000, P<0.001), and median hospitalization cost (ten thousand yuan, 4.7[4.4] vs. 1.7[1.8], U=175965.000, P<0.001) were all significantly greater in the SSI group. Multivariate logistic regression analysis revealed that the absence of skin preparation before surgery (OR=2.435,95%CI: 1.690-3.508, P<0.001), preoperative albuminemia <30 g/L (OR=1.680, 95%CI: 1.081-2.610, P=0.021), contaminated or infected incisions (OR=3.031, 95%CI: 2.151-4.271, P<0.001), and laparotomy (OR=3.436, 95% CI: 2.123-5.564, P<0.001) were independent risk factors of SSI. Operative duration less than 2 hours (OR=0.465, 95%CI: 0.312-0.695, P<0.001) and ASA score of 1-2 (OR=0.416, 95% CI: 0.289-0.601, P<0.001) were identified as independent protective factors for SSI. Conclusions: It is important to consider the nutritional status in the perioperative period of patients undergoing EAS. Preoperative skin preparation should be conducted and, whenever possible, laparoscope or robot-assisted surgery. Duration of surgery should be as short as possible while maintaining surgery quality and improving patient care.
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Affiliation(s)
- Z Q Zheng
- Department of Emergency Surgery, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Y Y Liu
- Department of Emergency Surgery, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - W W Luo
- Department of Emergency Surgery, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - H W Zhang
- Department of Emergency Surgery, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Y Y Wang
- Department of Emergency Surgery, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - H Wang
- Department of Gastrointestinal Surgery, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - X M Li
- Department of Hepatopancreatobiliary Surgery, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou 450007, China
| | - H P Chen
- Department of Nosocomial Infection Management, Jinchen General Hospital, Jinchen 048006, China
| | - Y Li
- Department of General Surgery, Zigong First People's Hospital, Zigong 643000, China
| | - W D Jin
- Department of General Surgery, General Hospital of Central Theater Command of PLA, Wuhan 430070, China
| | - H Huang
- Department of General Surgery, The First Hospital of Shanxi Medical University, Taiyuan 030001, China
| | - Y T Guan
- Department of Emergency Surgery, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - H M Zhang
- Department of Emergency Surgery, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - S K Li
- Department of Emergency Surgery, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - J A Ren
- Research Institute of General Surgery, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing 210002, China
| | - P G Wang
- Department of Emergency Surgery, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
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Wang Z, Yuan J, Wan WB, Ding J, Han L, Zhao P, Guo K, Gao L, Zhou XJ, Zhu DS, Guan YT. Positive association between urinary albumin-creatinine ratio and lower extremity peripheral arterial disease in Chinese diabetes patients: A cross-section study with propensity score matching analysis. Nutr Metab Cardiovasc Dis 2023; 33:541-550. [PMID: 36646604 DOI: 10.1016/j.numecd.2022.11.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 10/13/2022] [Accepted: 11/03/2022] [Indexed: 11/13/2022]
Abstract
BACKGROUND AND AIMS Elevated urinary albumin-creatinine ratio (ACR) is an established risk factor for lower extremity peripheral arterial disease (PAD) in non-diabetes individual. This study aimed to determine the relationship between urinary ACR level and PAD in diabetes population. METHODS AND RESULTS A cross-section study with 1396 hospitalized diabetes participants from department of endocrinology and neurology were performed and the propensity score matching method was applied to reduce the effects of confounding factors between the matched PAD and Non-PAD groups. The relationship between urinary ACR and ankle-brachial index (ABI) was analyzed by linear curve fitting analyses and multiple logistic regression models. Our study showed that the prevalence of PAD (low ABI, ABI<0.9) was 7.09% in our diabetes patients. The ABI level was significantly lower in high ACR group compared with those in normal urinary ACR group (1.11 ± 0.17 vs 1.13 ± 0.15, p = 0.010). The prevalence of PAD was increased with the increased tertile's of log2-transformed ACR in total patients before and after propensity score matching (p < 0.001 and p = 0.007, respectively). The OR (95% CI) between log2-transformed ACR and PAD was 1.0 and 1.70 (1.08-2.69, p = 0.022) respectively in normal and high ACR levels in diabetes patients after adjusting for potential confounders. After propensity score matching, the OR (95% CI) between log2-transformed ACR and PAD was 1.0 and 1.85 (1.05-3.23, p = 0.031) respectively in normal and high ACR levels in diabetes patients after adjusting for potential confounders. CONCLUSION The elevated urinary ACR level was associated with PAD in Chinese diabetes patients.
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Affiliation(s)
- Ze Wang
- Department of Neurology, Baoshan Branch, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200444, China; Department of Neurology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Jian Yuan
- Department of Neurology, Baoshan Branch, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200444, China
| | - Wen-Bin Wan
- Department of Neurology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Jie Ding
- Department of Neurology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Lu Han
- Department of Neurology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Pei Zhao
- Department of Neurology, Baoshan Branch, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200444, China
| | - Kai Guo
- Department of Endocrinology, Yangpu Hospital, School of Medicine, Tongji University, Shanghai 200090, China
| | - Li Gao
- Department of Neurology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Xia-Jun Zhou
- Department of Neurology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - De-Sheng Zhu
- Department of Neurology, Baoshan Branch, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200444, China; Department of Neurology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China.
| | - Yang-Tai Guan
- Department of Neurology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China.
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Han L, Wang Z, Yuan J, He J, Deng Y, Zhu DS, Guan YT. Circulating Leukocyte as an Inflammatory Biomarker: Association with Fibrinogen and Neuronal Damage in Acute Ischemic Stroke. J Inflamm Res 2023; 16:1213-1226. [PMID: 36974204 PMCID: PMC10039626 DOI: 10.2147/jir.s399021] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 03/14/2023] [Indexed: 03/29/2023] Open
Abstract
Background and Purpose Leukocytes and fibrinogen are inflammatory markers involved in circulating and central inflammatory response after ischemic stroke. However, the interaction between circulating leukocytes and serum fibrinogen and neuronal injury in acute ischemic stroke (AIS) patients is still unclear. The present study aimed to investigate the association between circulating leukocyte and serum fibrinogen and neuronal injury respectively in AIS. Methods A cross-section study with 431 hospitalized AIS patients from department of neurology was performed. Circulating leukocytes and fibrinogen were measured, and neuron-specific enolase (NSE) was detected to evaluate central neuronal damage. A propensity score matching method was used to minimize the effects of confounding factors. The relationship between leukocytes and NSE and fibrinogen was analyzed by linear curve fitting analysis and multiple logistic regression models respectively. Results The mean levels of NSE, leukocyte, and fibrinogen were significantly higher in the matched AIS group (n=89) than those of in the healthy control group (n=89) (all p<0.05). Both serum NSE and fibrinogen were increased with the increasing of leukocyte in AIS patients (both p<0.05). Smoothed plots suggested that there are linear relationships between leukocyte and NSE and fibrinogen respectively. Multiple logistic regression analysis showed the OR (95%) for the relationship between leukocyte and high NSE were 1.13 (1.01-1.26, p=0.031) and 1.13 (1.00-1.28, p=0.048), and between leukocyte and high fibrinogen were 1.40 (1.22-1.61, p<0.001) and 1.35 (1.15-1.58, p<0.001) in all AIS patients before and after adjusting for potential confounders. Conclusion Our study suggests that elevated circulating leukocyte was associated with high fibrinogen and neuronal injury in AIS. Therefore, there may be potential targets among circulating leukocyte, fibrinogen and NSE that should be intervened to reduce inflammatory reaction after ischemic stroke.
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Affiliation(s)
- Lu Han
- Department of Neurology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, People’s Republic of China
| | - Ze Wang
- Department of Neurology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, People’s Republic of China
| | - Jian Yuan
- Department of Neurology, Baoshan Branch, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200444, People’s Republic of China
| | - Jun He
- Department of Neurology, Baoshan Branch, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200444, People’s Republic of China
| | - Yun Deng
- Department of Neurology, Baoshan Branch, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200444, People’s Republic of China
| | - De-Sheng Zhu
- Department of Neurology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, People’s Republic of China
- Department of Neurology, Baoshan Branch, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200444, People’s Republic of China
- De-Sheng Zhu, Department of Neurology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, No. 160, Pujian Road, Shanghai, 200127, People’s Republic of China, Tel +86-13564719779, Email
| | - Yang-Tai Guan
- Department of Neurology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, People’s Republic of China
- Correspondence: Yang-Tai Guan, Department of Neurology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, No. 160, Pujian Road, Shanghai, 200127, People’s Republic of China, Tel +86-13386271865, Fax +86-21-68383482, Email
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Yao XY, Gao MC, Bai SW, Xie L, Song YY, Ding J, Wu YF, Xue CR, Hao Y, Zhang Y, Guan YT. Enlarged perivascular spaces, neuroinflammation and neurological dysfunction in NMOSD patients. Front Immunol 2022; 13:966781. [PMID: 36248814 PMCID: PMC9557144 DOI: 10.3389/fimmu.2022.966781] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Accepted: 08/31/2022] [Indexed: 11/22/2022] Open
Abstract
Background and objectives Cerebrospinal fluid (CSF) and interstitial fluid exchange along a brain-wide network of perivascular spaces (PVS) termed the ‘glymphatic system’. The aquaporin-4 (AQP4) water channels abundantly expressed on astrocytic endfeet play a key role in the CSF circulation in the glymphatic system. Neuromyelitis optica spectrum disorder (NMOSD) is an inflammatory demyelinating autoimmune disease of the central nervous system (CNS) featured with a specific autoantibody directed against AQP4 in most of patients. Anti-AQP4 antibodies are likely resulting in the impairment of the brain glymphatic system and the enlargement of PVS in NMOSD patients. In the current study, we aimed to demonstrate the features of EPVS detected by MRI and its association with the CSF anti-AQP4 antibody titer, CNS inflammatory markers, and disease severity in NMOSD patients. Methods We conducted a retrospective review of a consecutive cohort of 110 patients with NMOSD who had brain MRI. We assessed the correlation of EPVS with markers of neuroinflammation, blood-brain barrier (BBB) function and severity of neurological dysfunction in patients. We used multivariate logistic regression analysis to determine the independent variables associated with disease severity. Results The median number of total-EPVS was 15.5 (IQR, 11-24.2) in NMOSD patients. The number of total-EPVS was significantly related to EDSS score after correcting for the effects of age and hypertension (r=0.353, p<0.001). The number of total-EPVS was also significantly associated with the titer of CSF anti-AQP4 antibody, the albumin rate (CSF/serum ratios of albumin), the CSF albumin, IgG and IgA levels. Logistic regression analysis showed that total-EPVS and serum albumin level were two independent factors to predict disease severity in NMOSD patients (OR=1.053, p=0.028; OR=0.858, p=0.009 respectively). Furthermore, ROC analysis achieved AUC of 0.736 (0.640-0.831, p<0.001) for total-EPVS to determine severe NMOSD (EDSS 4.5-9.5). Discussion In our cohort, we found a relationship between EPVS and neuroinflammation and BBB function in NMOSD. Moreover, EPVS might independently predict neurological dysfunction in patients with NMOSD.
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Affiliation(s)
- Xiao-Ying Yao
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Mei-Chun Gao
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Shu-Wei Bai
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Li Xie
- Clinical Research Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Ya-Ying Song
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jie Ding
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yi-Fan Wu
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Chun-Ran Xue
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yong Hao
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Ying Zhang
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yang-Tai Guan
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- *Correspondence: Yang-Tai Guan,
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Gao L, Qin JX, Shi JQ, Jiang T, Wang F, Xie C, Gao Q, Zhi N, Dong Q, Guan YT. Fine particulate matter exposure aggravates ischemic injury via NLRP3 inflammasome activation and pyroptosis. CNS Neurosci Ther 2022; 28:1045-1058. [PMID: 35403328 PMCID: PMC9160454 DOI: 10.1111/cns.13837] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 10/26/2021] [Accepted: 11/11/2021] [Indexed: 12/12/2022] Open
Abstract
Aims Accumulating evidence has suggested that airborne fine particulate matter (PM2.5) exposure is associated with an increased risk of ischemic stroke. However, the underlying mechanisms have not been fully elucidated. In this study, we aim to investigate the role and mechanisms of NLRP3 inflammasome and pyroptosis in ischemic stroke after PM2.5 exposure. Methods The BV‐2 and HMC‐3 microglial cell lines were established and subjected to oxygen–glucose deprivation and reoxygenation (OGD/R) with or without PM2.5 exposure. We used the CCK‐8 assay to explore the effects of PM2.5 on cell viability of BV‐2 and HMC‐3 cells. Then, the effects of PM2.5 exposure on NLRP3 inflammasome and pyroptosis following OGD/R were detected by western blotting, ELISA, and the confocal immunofluorescence staining. Afterwards, NLRP3 was knocked down to further validate the effects of PM2.5 on cell viability, NLRP3 inflammasome activation, and pyroptosis after OGD/R in HMC‐3 cells. Finally, the intracellular reactive oxygen species (ROS) was measured and the ROS inhibitor N‐acetyl‐L‐cysteine (NAC) was used to investigate whether ROS was required for PM2.5‐induced NLRP3 inflammasome activation and pyroptosis under ischemic conditions. Results We found that PM2.5 exposure decreased the viability of BV‐2 and HMC‐3 cells in a dose‐ and time‐dependent manner under ischemic conditions. Furthermore, PM2.5 exposure aggravated NLRP3 inflammasome activation and pyroptosis after OGD/R, as indicated by an increased expression of NLRP3, ASC, pro‐caspase‐1, Caspase‐1, GSDMD, and GSDMD‐N; increased production of IL‐1β and IL‐18; and enhanced Caspase‐1 activity and SYTOX green uptake. However, shRNA NLRP3 treatment attenuated the effects of PM2.5 on cell viability, NLRP3 inflammasome activation, and pyroptosis. Moreover, we observed that PM2.5 exposure increased the production of intracellular ROS following OGD/R, while inhibiting ROS production with NAC partially attenuated PM2.5‐induced NLRP3 inflammasome activation and pyroptosis under ischemic conditions. Conclusion These results suggested that PM2.5 exposure triggered the activation of NLRP3 inflammasome and pyroptosis under ischemic conditions, which may be mediated by increased ROS production after ischemic stroke. These findings may provide a more enhanced understanding of the interplay between PM2.5 and neuroinflammation and cell death, and reveal a novel mechanism of PM2.5‐mediated toxic effects after ischemic stroke.
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Affiliation(s)
- Li Gao
- Department of Neurology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jie-Xing Qin
- Department of Neurology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jian-Quan Shi
- Department of Neurology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Teng Jiang
- Department of Neurology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Fei Wang
- Department of Neurology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Chong Xie
- Department of Neurology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qing Gao
- Department of Neurology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Nan Zhi
- Department of Neurology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qing Dong
- Department of Neurology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yang-Tai Guan
- Department of Neurology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Yao XY, Xie L, Cai Y, Zhang Y, Deng Y, Gao MC, Wang YS, Xu HM, Ding J, Wu YF, Zhao N, Wang Z, Song YY, Wang LP, Xie C, Li ZZ, Wan WB, Lin Y, Jin HF, Wang K, Qiu HY, Zhuang L, Zhou Y, Jin YY, Ni LP, Yan JL, Guo Q, Xue JH, Qian BY, Guan YT. Human Umbilical Cord Mesenchymal Stem Cells to Treat Neuromyelitis Optica Spectrum Disorder (hUC-MSC-NMOSD): A Study Protocol for a Prospective, Multicenter, Randomized, Placebo-Controlled Clinical Trial. Front Neurol 2022; 13:860083. [PMID: 35547390 PMCID: PMC9082633 DOI: 10.3389/fneur.2022.860083] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Accepted: 03/21/2022] [Indexed: 11/13/2022] Open
Abstract
Background Neuromyelitis Optica spectrum disorder (NMOSD) is severe relapsing and disabling autoimmune disease of the central nervous system. Its optimal first-line treatment to reduce relapse rate and ameliorate neurological disability remains unclear. We will conduct a prospective, multicenter, randomized, placebo-controlled clinical trial to study the safety and effectiveness of human umbilical cord mesenchymal stem cells (hUC-MSCs) in treating NMOSD. Methods The trial is planned to recruit 430 AQP4-IgG seropositive NMOSD patients. It consists of three consecutive stages. The first stage will be carried out in the leading center only and aims to evaluate the safety of hUC-MSCs. Patients will be treated with three different doses of hUC-MSCs: 1, 2, or 5 × 106 MSC/kg·weight for the low-, medium-, and high-dose group, respectively. The second and third stages will be carried out in six centers. The second stage aims to find the optimal dosage. Patients will be 1:1:1:1 randomized into the low-, medium-, high-dose group and the controlled group. The third stage aims to evaluate the effectiveness. Patients will be 1:1 randomized into the optimal dose and the controlled group. The primary endpoint is the first recurrent time and secondary endpoints are the recurrent times, EDSS scores, MRI lesion numbers, OSIS scores, Hauser walking index, and SF-36 scores. Endpoint events and side effects will be evaluated every 3 months for 2 years. Discussion Although hUC-MSC has shown promising treatment effects of NMOSD in preclinical studies, there is still a lack of well-designed clinical trials to evaluate the safety and effectiveness of hUC-MSC among NMOSD patients. As far as we know, this trial will be the first one to systematically demonstrate the clinical safety and efficacy of hUC-MSC in treating NMOSD and might be able to determine the optimal dose of hUC-MSC for NMOSD patients. Trial registration The study was registered with the Chinese Clinical Trial Registry (CHICTR.org.cn) on 2 March 2016 (registration No. ChiCTR-INR-16008037), and the revised trial protocol (Protocol version 1.2.1) was released on 16 March 2020.
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Affiliation(s)
- Xiao-Ying Yao
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Li Xie
- Clinical Research Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yu Cai
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Ying Zhang
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Ye Deng
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Mei-Chun Gao
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yi-Shu Wang
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Hui-Ming Xu
- State Key Laboratory of Oncogenes and Related Genes, Renji-Med-X Clinical Stem Cell Research Center, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jie Ding
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yi-Fan Wu
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Nan Zhao
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Ze Wang
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Ya-Ying Song
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Li-Ping Wang
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Chong Xie
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Ze-Zhi Li
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Wen-Bin Wan
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yan Lin
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Hai-Feng Jin
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Kan Wang
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Hui-Ying Qiu
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Lei Zhuang
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yan Zhou
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yu-Yan Jin
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Li-Ping Ni
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jia-Li Yan
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Quan Guo
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jia-Hui Xue
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Bi-Yun Qian
- Clinical Research Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.,Shanghai Clinical Research Promotion and Development Center, Shanghai Hospital Development Center, Shanghai, China
| | - Yang-Tai Guan
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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Guan YT, Zhang R, Wang TY, Wei A, Ma HH, Li ZG, Qin MQ, Zhang LP, Wang D, Wu RH, Yang J. [Chronic active Epstein-Barr virus infection complicated with pulmonary arterial hypertension in a child]. Zhonghua Er Ke Za Zhi 2022; 60:355-357. [PMID: 35385945 DOI: 10.3760/cma.j.cn112140-20210718-00594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Affiliation(s)
- Y T Guan
- Hematology Center,Beijing Children's Hospital, Capital Medical University,National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Ministry of Education,Beijing Pediatric Research Institute, Beijing 100045, China
| | - R Zhang
- Hematology Center,Beijing Children's Hospital, Capital Medical University,National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Ministry of Education,Beijing Pediatric Research Institute, Beijing 100045, China
| | - T Y Wang
- Hematology Center,Beijing Children's Hospital, Capital Medical University,National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Ministry of Education,Beijing Pediatric Research Institute, Beijing 100045, China
| | - A Wei
- Hematology Center,Beijing Children's Hospital, Capital Medical University,National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Ministry of Education,Beijing Pediatric Research Institute, Beijing 100045, China
| | - H H Ma
- Hematology Center,Beijing Children's Hospital, Capital Medical University,National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Ministry of Education,Beijing Pediatric Research Institute, Beijing 100045, China
| | - Z G Li
- Hematology Center,Beijing Children's Hospital, Capital Medical University,National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Ministry of Education,Beijing Pediatric Research Institute, Beijing 100045, China
| | - M Q Qin
- Hematology Center,Beijing Children's Hospital, Capital Medical University,National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Ministry of Education,Beijing Pediatric Research Institute, Beijing 100045, China
| | - L P Zhang
- Hematology Center,Beijing Children's Hospital, Capital Medical University,National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Ministry of Education,Beijing Pediatric Research Institute, Beijing 100045, China
| | - D Wang
- Hematology Center,Beijing Children's Hospital, Capital Medical University,National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Ministry of Education,Beijing Pediatric Research Institute, Beijing 100045, China
| | - R H Wu
- Hematology Center,Beijing Children's Hospital, Capital Medical University,National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Ministry of Education,Beijing Pediatric Research Institute, Beijing 100045, China
| | - J Yang
- Hematology Center,Beijing Children's Hospital, Capital Medical University,National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Ministry of Education,Beijing Pediatric Research Institute, Beijing 100045, China
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9
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Yang H, Liu W, Wu YF, Zhu DS, Shen XF, Guan YT. Lymphocyte Subsets Are Associated with Disease Status in Neuromyelitis Optica Spectrum Disorders. Neuroimmunomodulation 2022; 29:296-305. [PMID: 34903694 DOI: 10.1159/000520745] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Accepted: 10/28/2021] [Indexed: 12/16/2022] Open
Abstract
OBJECTIVE At present, studies on lymphocytes are mostly conducted on CD19+ B cells and CD27+ B cells in neuromyelitis optica spectrum disorders (NMOSDs), but the exact changes in lymphocyte subsets (CD19+ B cells, CD3+ T cells, CD4+ Th cells, CD8+ Ts cells, the CD4+/CD8+ ratio, and NK [CD56+ CD16] cells) have rarely been studied. This study aimed to assess lymphocyte subset changes in patients with NMOSD. METHODS We performed a cross-sectional study of consecutive patients with acute NMOSD (n = 41), chronic NMOSD (n = 21), and healthy individuals (n = 44). Peripheral blood samples were obtained upon admission, and lymphocyte subsets were analyzed by flow cytometry. Levels of lymphocyte subsets among 3 groups were compared and its correlation with the length of spinal cord lesions was analyzed. RESULTS The levels of peripheral blood CD19+ B cells were significantly higher in patients with acute and chronic NMOSD than in healthy controls (HCs) (17.91 ± 8.7%, 13.08 ± 7.562%, and 12.48 ± 3.575%, respectively; p < 0.001) and were positively correlated with the length of spinal cord lesions in acute NMOSD (r = 0.433, p < 0.05). The peripheral blood CD4+/CD8+ ratio was significantly lower in patients with acute NMOSD and chronic NMOSD than in HCs (1.497 ± 0.6387, 1.33 ± 0.5574, and 1.753 ± 0.659, respectively; p < 0.05), and the levels of peripheral blood NK (CD56+ CD16) cells were significantly lower in patients with acute and chronic NMOSD than in HCs (13.6 ± 10.13, 11.11 ± 7.057, and 14.7 [interquartile range = 9.28], respectively; p < 0.01). CONCLUSIONS The levels of certain subsets of peripheral blood lymphocytes are associated with disease status in NMOSD.
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Affiliation(s)
- Hong Yang
- Department of Neurology, The First Rehabilitation Hospital of Shanghai, School of Medicine, Tongji University, Shanghai, China,
| | - Wei Liu
- Department of Neurology, The First Rehabilitation Hospital of Shanghai, School of Medicine, Tongji University, Shanghai, China
| | - Yi-Fan Wu
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - De-Sheng Zhu
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Xia-Feng Shen
- Department of Neurology, The First Rehabilitation Hospital of Shanghai, School of Medicine, Tongji University, Shanghai, China
| | - Yang-Tai Guan
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Department of Neurology, Tongji Hospital, School of Medicine, Tongji University, Shanghai, China
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10
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Yang H, Wu YF, Ding J, Liu W, Zhu DS, Shen XF, Guan YT. Comprehensive Analysis of N 6-Methyladenosine (m 6A) Methylation in Neuromyelitis Optica Spectrum Disorders. Front Genet 2021; 12:735454. [PMID: 34899833 PMCID: PMC8660110 DOI: 10.3389/fgene.2021.735454] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Accepted: 10/25/2021] [Indexed: 11/13/2022] Open
Abstract
Background: N6-Methyladenosine (m6A) methylation is the most prevalent internal posttranscriptional modification on mammalian mRNA. But its role in neuromyelitis optica spectrum disorders (NMOSD) is not known. Aims: To explore the mechanism of m6A in NMOSD patients. Methods: This study assessed the m6A methylation levels in blood from two groups: NMOSD patients and healthy controls. Methylated RNA immunoprecipitation Sequencing (MeRIP-seq) and RNA-seq were performed to assess differences in m6A methylation between NMOSD patients and healthy controls. Ultra-high performance liquid chromatography coupled with triple quadruple mass spectrometry (UPLC-QQQ-MS) method was performed to check m6A level. Differential m6A methylation genes were validated by MeRIP-qPCR. Results: Compared with that in the control group, the total m6A level was decreased in the NMOSD group. Genes with upregulated methylation were primarily enriched in processes associated with RNA splicing, mRNA processing, and innate immune response, while genes with downregulated methylation were enriched in processes associated with the regulation of transcription, DNA-templating, and the positive regulation of I-kappa B kinase/NF-kappa B signalling. Conclusion: These findings demonstrate that differential m6A methylation may act on functional genes to regulate immune homeostasis in NMOSD.
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Affiliation(s)
- Hong Yang
- Department of Neurology, The First Rehabilitation Hospital of Shanghai, Tongji University School of Medicine, Shanghai, China
| | - Yi-Fan Wu
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jie Ding
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Wei Liu
- Department of Neurology, The First Rehabilitation Hospital of Shanghai, Tongji University School of Medicine, Shanghai, China
| | - De-Sheng Zhu
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Xia-Feng Shen
- Department of Neurology, The First Rehabilitation Hospital of Shanghai, Tongji University School of Medicine, Shanghai, China
| | - Yang-Tai Guan
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.,Department of Neurology, Tongji Hospital, Tongji University School of Medicine, Shanghai, China
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11
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Yuan J, Cai J, Zhao P, Zhao N, Hong RH, Ding J, Yang J, Fan QL, Zhu J, Zhou XJ, Li ZZ, Zhu DS, Guan YT. Association Between Low-Density Lipoprotein Cholesterol and Platelet Distribution Width in Acute Ischemic Stroke. Front Neurol 2021; 12:631227. [PMID: 33746886 PMCID: PMC7973264 DOI: 10.3389/fneur.2021.631227] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Accepted: 02/01/2021] [Indexed: 11/13/2022] Open
Abstract
Objective: Elevated low-density lipoprotein cholesterol (LDL-C) is an established risk factor for ischemic stroke; however, whether LDL-C affects the platelet deformation function in the peripheral blood circulation in patients with acute ischemic stroke (AIS) is unknown. The present study aimed to investigate the relationship between LDL-C and platelet distribution width (PDW) in AIS patients. Methods: We conducted a cross-sectional hospitalized-based study of consecutive 438 patients with AIS within 24 h. Blood samples were collected upon admission and prior to drug administration, and LDL-C and PDW (a parameter that reflects the heterogeneity of platelet volume) were assessed. The relationship between LDL-C and PDW were analyzed by linear curve fitting analyses. Crude and adjusted beta coefficients of LDL-C for PDW with 95% confidence intervals were analyzed using multivariate-adjusted linear regression models. Results: The PDW was significantly higher in the high LDL-C group compared with those in the normal LDL-C group (16.28 ± 0.37 fl vs. 16.08 ± 0.37 fl, p < 0.001). Adjusted smoothed plots suggested that there are linear relationships between LDL-C and PDW, and the Pearson's correlation coefficient (95%) was 0.387 (0.304-0.464, p < 0.001). The beta coefficients (95% CI) between LDL-C and PDW were 0.15 (0.12-0.18, p < 0.001) and 0.14 (0.11-0.18, p < 0.001), respectively, in AIS patients before and after adjusting for potential confounders. Conclusion: Our study suggested that the elevated LDL-C level was related to increased PDW among AIS patients.
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Affiliation(s)
- Jian Yuan
- Department of Neurology, Baoshan Branch, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Jian Cai
- Department of Neurology, Baoshan Branch, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China.,Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Pei Zhao
- Department of Neurology, Baoshan Branch, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Nan Zhao
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Rong-Hua Hong
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Jie Ding
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Jin Yang
- Department of Neurology, Baoshan Branch, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Qing-Lei Fan
- Department of Neurology, Baoshan Branch, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Jian Zhu
- Department of Neurology, Baoshan Branch, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Xia-Jun Zhou
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Ze-Zhi Li
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - De-Sheng Zhu
- Department of Neurology, Baoshan Branch, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China.,Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Yang-Tai Guan
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
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Hong RH, Zhu J, Li ZZ, Yuan J, Zhao P, Ding J, Fan QL, Yang J, Liu BG, Cai J, Zhu DS, Guan YT. Red blood cell distribution width is associated with neuronal damage in acute ischemic stroke. Aging (Albany NY) 2020; 12:9855-9867. [PMID: 32445553 PMCID: PMC7288978 DOI: 10.18632/aging.103250] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Accepted: 04/20/2020] [Indexed: 12/16/2022]
Abstract
Elevated red blood cell distribution width (RDW) has been found to be associated with the occurrence of ischemic stroke. However, there is no defined relationship between RDW and neuronal damage in acute ischemic stroke (AIS). This study was designed to determine the relationship between RDW and neuronal damage in AIS patients. A total of 442 consecutive AIS patients from January 2018 to June 2019 were evaluated for neuronal damage, which was estimated by serum neuron-specific enolase (NSE) levels. Red blood cell distribution width-standard deviation (RDW-SD), a parameter that reflects the heterogeneity of red blood cell volume, was also assessed. We evaluated the association between the RDW-SD and serum NSE level through multivariate-adjusted linear regression analysis. Both the serum NSE level and the incidence of high NSE increased according to the increased RDW-SD tertile in AIS patients (p<0.01). There was a positive correlation between RDW-SD and serum NSE levels (r=0.275, 95% CI: 0.187-0.359, p<0.001). The beta coefficients (95% CI) between RDW-SD and serum NSE levels were 0.32 (0.21-0.42, p<0.001) and 0.26 (0.15-0.38, p<0.001), respectively, in AIS patients before and after adjusting for potential confounders. In conclusion, we found a significant positive association between RDW-SD and neuronal damage in AIS patients.
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Affiliation(s)
- Rong-Hua Hong
- Department of Neurology, Baoshan Branch, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200444, China
| | - Jian Zhu
- Department of Neurology, Baoshan Branch, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200444, China
| | - Ze-Zhi Li
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200127, China
| | - Jian Yuan
- Department of Neurology, Baoshan Branch, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200444, China
| | - Pei Zhao
- Department of Neurology, Baoshan Branch, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200444, China
| | - Jie Ding
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200127, China
| | - Qing-Lei Fan
- Department of Neurology, Baoshan Branch, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200444, China
| | - Jin Yang
- Department of Neurology, Baoshan Branch, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200444, China
| | - Bao-Guo Liu
- Department of Neurology, Baoshan Branch, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200444, China
| | - Jian Cai
- Department of Neurology, Baoshan Branch, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200444, China.,Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200127, China
| | - De-Sheng Zhu
- Department of Neurology, Baoshan Branch, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200444, China.,Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200127, China
| | - Yang-Tai Guan
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200127, China
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Yao XY, Wu YF, Gao MC, Hong RH, Ding J, Hao Y, Zhang Y, Guan YT. Serum albumin level is associated with the severity of neurological dysfunction of NMOSD patients. Mult Scler Relat Disord 2020; 43:102130. [PMID: 32417662 DOI: 10.1016/j.msard.2020.102130] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Revised: 04/06/2020] [Accepted: 04/12/2020] [Indexed: 11/30/2022]
Abstract
BACKGROUND Neuromyelitis optica spectrum disorder (NMOSD) is an inflammatory autoimmune disease of the central nervous system. Serum albumin (SA) has antioxidant, immunomodulatory and anti-inflammatory effects. However, the roles of SA in NMOSD have not been studied. The current study aimed to clarify the association of SA with disease severity and prognosis in NMOSD patients. METHODS Serum levels of albumin were measured by Bromcresol Green method. Serum level measurements of interleukins were performed using enzyme-linked immunoassay (ELISA) method. RESULTS Of all the 130 NMOSD patients, 96 patients were in the acute phase while 34 patients were in the remission phase of disease at the time of sampling. SA concentration was significantly correlated with EDSS score in patients in the acute phase but not in remission phase (r = - 0.388, p < 0.001 and r = - 0.467, p = 0.809, respectively). Logistic analysis revealed that SA was the only significant factor to predict severe NMOSD (EDSS 8.0-9.5) OR = 0.698, 95%CI 0.563-0.865, p = 0.001) after adjustment of other confounding factors. Furthermore, SA was negatively correlated with the serum level of IL-33 (r = -0.438, p = 0.016) in the acute phase of NMOSD patients. CONCLUSION The current study found that low level of SA was an independent indicator of more severe neurological deficit in patients in acute phase of NMOSD. SA concentration was negatively correlated with the serum level of IL-33 in the acute phase of the disease, which implies that SA might participate in the immunopathology of NMOSD partly through its interaction with IL-33.
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Affiliation(s)
- Xiao-Ying Yao
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Yi-Fan Wu
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Mei-Chun Gao
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Rong-Hua Hong
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Jie Ding
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Yong Hao
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Ying Zhang
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China.
| | - Yang-Tai Guan
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China.
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14
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Ding J, Zhu DS, Hong RH, Wu YF, Li ZZ, Zhou XJ, Cai J, Guan YT. The differential expression of natural killer cells in NMOSD and MS. J Clin Neurosci 2019; 71:9-14. [PMID: 31864829 DOI: 10.1016/j.jocn.2019.11.022] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [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: 07/19/2019] [Revised: 10/07/2019] [Accepted: 11/19/2019] [Indexed: 12/29/2022]
Abstract
Natural killer (NK) cells are involved in the pathogenesis of inflammatory demyelinating diseases of the central nervous system. However, the differential expressions of NK cells in the peripheral blood of patients with neuromyelitis optica spectrum disorders (NMOSD) and multiple sclerosis (MS) are unknown. This study aimed to explore the differential expressions of NK cells in NMOSD and MS and evaluate the clinical implications of this difference. We performed a cross-sectional study to investigate the expression of NK cells in the peripheral blood of patients with NMOSD (n = 78) and MS (n = 24) and of healthy controls (HC, n = 27). Furthermore, we investigated the relationship between NK cell level and disease phase in 102 patients with NMOSD and MS through Spearman correlation analysis and receiver operating characteristic (ROC) analysis. Our results showed that the median (interquartile range) NK cell levels in acute-phase NMOSD patients, remission-phase NMOSD patients, acute-phase MS patients, and HC subjects were 114.10 (64.75-153.38) cells/µL, 167.60 (116.35-266.15) cells/µL, 282.55 (140.57-368.20) cells/µL, and 221.00 (170.40-269.55) cells/µL, respectively (p < 0.001). The Spearman correlation coefficient (95%) for the relationship between NK level and disease phase in NMOSD patients was 0.366 (0.150-0.550) (p < 0.001). Furthermore, ROC analysis revealed that patients with NK cell values lower than 172.200 cells/µL were more prone to have acute-phase NMOSD than MS. In conclusion, the expression of NK cells in peripheral blood was lower in patients with NMOSD than in patients with MS in the acute phase, and a low expression of NK cells may suggest having acute-phase NMOSD rather than MS.
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Affiliation(s)
- Jie Ding
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200127, China
| | - De-Sheng Zhu
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200127, China
| | - Rong-Hua Hong
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200127, China
| | - Yi-Fan Wu
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200127, China
| | - Ze-Zhi Li
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200127, China
| | - Xia-Jun Zhou
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200127, China
| | - Jian Cai
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200127, China
| | - Yang-Tai Guan
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200127, China.
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15
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Zhang Y, Yao XY, Gao MC, Ding J, Hong RH, Huang H, Zhuang L, Wang YG, Hao Y, Guan YT. Th2 axis-related cytokines in patients with neuromyelitis optica spectrum disorders. CNS Neurosci Ther 2017; 24:64-69. [PMID: 29110391 DOI: 10.1111/cns.12774] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [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: 06/04/2017] [Revised: 10/15/2017] [Accepted: 10/16/2017] [Indexed: 02/06/2023] Open
Abstract
AIMS Neuromyelitis optica spectrum disorder (NMOSD) is an inflammatory autoimmune disease of the central nervous system. Increasing evidence indicates that NMOSD is a Th2- and Th17-dominant disease. IL-25, IL-31, and IL-33 are three newly found Th2-related cytokines, and their roles in the pathogenesis of NMOSD have not been studied. This study aimed to measure the serum levels of IL-25, IL-31, and IL-33 in patients with NMOSD and evaluate their clinical implications. METHODS Serum was collected from patients with NMOSD (n = 48) and healthy controls (HC, n = 28). Serum level measurements of IL-25, IL-31, IL-33, IL-17A, and IL-6 were performed using enzyme-linked immunoassay (ELISA) method. RESULTS The serum levels of IL-25, IL-31, and IL-33 were significantly higher in patients with NMOSD as compared to HC. The serum level of IL-31 was significantly correlated with IL-17A (r = 0.382,P = 0.009) in patients with NMOSD; the latter is a critical cytokine in the pathogenesis of NMOSD. The serum level of IL-33 was higher in patients with characteristic brain lesions than patients without (307 pg/mL vs 166 pg/mL, P = 0.028). Furthermore, the serum level of IL-33 in the acute phase of the disease was positively correlated with annualized relapse rate (r = 0.364, P = 0.04). CONCLUSION We found higher serum levels of IL-25, IL-31, and IL-33 in patient with NMOSD as compared to healthy controls. The serum level of IL-33 during acute phase was associated with more past attacks in patients with NMOSD.
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Affiliation(s)
- Ying Zhang
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Xiao-Ying Yao
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Mei-Chun Gao
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jie Ding
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Rong-Hua Hong
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Hua Huang
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Lei Zhuang
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yong-Gang Wang
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yong Hao
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yang-Tai Guan
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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Zhu DS, Yu L, Li M, Han L, Huang XX, Wang XQ, Yang XL, Zhu Y, Zhou XJ, Guan YT. High serum creatinine is associated with reduction of vision impaired in patients with NMOSD. J Neuroimmunol 2017; 310:32-37. [PMID: 28778442 DOI: 10.1016/j.jneuroim.2017.06.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 05/25/2017] [Accepted: 06/12/2017] [Indexed: 12/13/2022]
Abstract
Serum creatinine (SCR) has been found to be neuroprotective in neurodegenerative disease. However, whether SCR is a protective factor for vision impaired in neuromyelitis optica spectrum disorder (NMOSD) is unclear. This study to determine the relationship between SCR level and vision impaired in NMOSD patients through multivariate-adjusted linear regression analyses. Our result showed that high level of SCR was associated with a low occurrence of vision impaired, and the association was independent after adjustment for confounding risk factors and hierarchical analysis. Therefore, these results demonstrated that higher SCR level is a protective factor of vision impaired in male NMOSD patients.
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Affiliation(s)
- De-Sheng Zhu
- Department of Neurology, Renji Hospital, School of medicine, Shanghai Jiaotong University, Shanghai 200127, China
| | - Lu Yu
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai 200366, China
| | - Mei Li
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai 200366, China
| | - Lu Han
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai 200366, China
| | - Xin-Xin Huang
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai 200366, China
| | - Xiao-Qing Wang
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai 200366, China
| | - Xiao-Li Yang
- Department of Neurology, The Fifth People's Hospital of Shanghai, Fudan University, Shanghai 200011, China
| | - Ying Zhu
- Department of Neurology, Renji Hospital, School of medicine, Shanghai Jiaotong University, Shanghai 200127, China
| | - Xia-Jun Zhou
- Department of Neurology, Renji Hospital, School of medicine, Shanghai Jiaotong University, Shanghai 200127, China
| | - Yang-Tai Guan
- Department of Neurology, Renji Hospital, School of medicine, Shanghai Jiaotong University, Shanghai 200127, China.
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Zhu DS, Yang XL, Lv HH, Bai CG, Yang PP, Li ZZ, Hao Y, Zhang Y, Guan YT. Seizure syndrome as a first manifestation of solitary tumor-like mass lesion of PACNS: Two case reports. Medicine (Baltimore) 2017; 96:e6018. [PMID: 28248859 PMCID: PMC5340432 DOI: 10.1097/md.0000000000006018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
RATIONALE Primary angiitis of the central nervous system (PACNS) is an inflammatory disease involving cerebrovascular and parenchymal, and solitary tumor-like mass lesion of PACNS (TLML-PACNS) is frequently misdiagnosed as neoplastic or other inflammatory diseases. However, seizure syndrome as a first manifestation of TLML-PACNS has rarely reported before. PATIENT CONCERNS Here, we report 2 cases of seizure syndrome, which was the first sign that presented prior to the diagnosis of TLML-PACNS by brain biopsy. DIAGNOSES A mass lesion in the white and gray matters was detected by magnetic resonance imaging. The pathology for leptomeningeal lesion biopsy observed a transmural inflammation of the artery, with T lymphocyte infiltration. Patients were diagnosed with PACNS and epileptic seizure by biopsy and electroencephalogram. INTERVENTIONS Patients were treated with glucocorticoid pulse therapy for 3 days, and subsequently oral prednisone was continued, in combination with immunosuppressant. OUTCOMES Luckily, both two patients were improved after treatment, and only mild cognitive impairment remained without adverse event. LESSONS Patient with mass lesion in CNS, which is similar to tumor, presented with seizure, headache, or cerebrovascular events without any other risk factors for stroke or tumor, should be considered the feasible with the disease of TLML-PACNS.
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Affiliation(s)
- De-Sheng Zhu
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University
| | - Xiao-Li Yang
- Department of Neurology, The Fifth People's Hospital of Shanghai, Fudan University
| | - Hui-Hui Lv
- Department of Neurology, Changhai Hospital, Second Military Medical University
| | - Chen-Guang Bai
- Department of Pathology, Changhai Hospital, Second Military Medical University
| | - Pang-Pan Yang
- Department of Radiology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Ze-Zhi Li
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University
| | - Yong Hao
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University
| | - Ying Zhang
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University
| | - Yang-Tai Guan
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University
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18
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Zhang YH, Meng JL, Gao Y, Zhang JY, Niu SL, Yu XZ, Li YB, Guan YT, Sun BX, Zhao ZH. Changes in methylation of genomic DNA from chicken immune organs in response to H5N1 influenza virus infection. Genet Mol Res 2016; 15:gmr7382. [PMID: 27706718 DOI: 10.4238/gmr.15037382] [Citation(s) in RCA: 13] [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
DNA methylation is an important epigenetic modification in eukaryotes, which plays a significant role in regulating gene expression. When the host is invaded by the influenza virus, gene expression is regulated via changes in DNA methylation levels or patterns, leading to the activation or suppression of relevant signaling pathways or networks, triggering a series of immune responses against viral invasion. Here, we investigated the changes in genomic DNA methylation in the immune organs of chicken infected with H5N1 influenza virus. Genome-wide DNA methylation levels in the spleen, thymus, and bursa of Fabricius of specific pathogen-free (SPF) chicken infected with the Guangdong (G-H5N1) and Anhui (A-H5N1) H5N1 strains, and water (control) were analyzed by fluorescence-labeled methylation-sensitive amplified polymorphism (F-MSAP). The results indicated that total DNA methylation levels did not differ between spleen genomic DNA in chicken treated with different viral strains and the control (P > 0.05). However, the total DNA methylation levels were significantly upregulated in the thymus (P < 0.01) and bursa (P < 0.05) of chicken in the A-H5N1 group compared to those in the G-H5N1 and control groups. These results provide a basis for the screening of avian influenza-resistance genes or methylation markers, analyzing the epigenetic regulation mechanisms of avian influenza, and performing selective breeding for disease resistance.
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Affiliation(s)
- Y H Zhang
- College of Animal Science, Jilin University, Changchun, China
| | - J L Meng
- College of Animal Science, Jilin University, Changchun, China
| | - Y Gao
- College of Animal Science, Jilin University, Changchun, China
| | - J Y Zhang
- College of Animal Science, Jilin University, Changchun, China
| | - S L Niu
- College of Animal Science, Jilin University, Changchun, China
| | - X Z Yu
- College of Agriculture, Forestry and Life Sciences, Clemson University, Clemson, SC, USA
| | - Y B Li
- The Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Y T Guan
- The Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - B X Sun
- College of Animal Science, Jilin University, Changchun, China
| | - Z H Zhao
- College of Animal Science, Jilin University, Changchun, China
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19
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Xie C, Liu YQ, Guan YT, Zhang GX. Induced Stem Cells as a Novel Multiple Sclerosis Therapy. Curr Stem Cell Res Ther 2016; 11:313-20. [DOI: 10.2174/1574888x10666150302110013] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2014] [Accepted: 02/23/2015] [Indexed: 11/22/2022]
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20
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Hao Y, Hu Q, Zhang XJ, Xiao JQ, Li ZZ, Guan YT. RETRACTED ARTICLE: Significance of Increased Serum Interleukin-18 Levels in Stroke Patients: A Meta-Analysis. Mol Neurobiol 2015. [DOI: 10.1007/s12035-014-8977-1] [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: 10/24/2022]
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21
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Lv HH, Wu S, Liu X, Yang XL, Xu JF, Guan YT, Dong Q, Zheng SL, Jiang JM, Li SX, Luo Z, Li L, An LX, Han Y. Comparison of VerifyNow P2Y12 and thrombelastography for assessing clopidogrel response in stroke patients in China. Neurol Sci 2015; 37:277-82. [PMID: 26520845 DOI: 10.1007/s10072-015-2407-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2015] [Accepted: 09/25/2015] [Indexed: 02/06/2023]
Abstract
Poor response to clopidogrel is often associated with recurrent ischemic events, and reliable platelet function tests are needed to identify clopidogrel low response (CLR). The aim of the study was to compare the consistency of VerifyNow P2Y12 and thrombelastography (TEG) in acute ischemic stroke patients treated with clopidogrel. Patients hospitalized in Changhai Hospital from August 2012 to September 2013 and assigned to treatment with a daily 75-mg dose of clopidogrel. The blood samples were taken on the 5-7th day to assess the capability of VerifyNow P2Y12 and TEG for evaluation of clopidogrel response, and all instrument parameters were used to perform correlation analysis. Patients with CLR were detected by using the methods and criteria published earlier (PRU ≥ 230 assayed by VerifyNow P2Y12 or TEG-Inhib% ≤30 % measured by TEG). Totally 58 patients were enrolled for the study and there were wide varieties in parameters of VerifyNow P2Y12 and TEG. Results showed a total of 17 and 9 patients, respectively, identified as CLR assessed by VerifyNow P2Y12 and TEG, but only three patients were detected to be clopidogrel low responders with both tests. The kappa consistency analysis showed poor consistency between VerifyNow P2Y12 and TEG results in terms of CLR (Kappa = -0.0349, p = 0.7730). Linear regression also demonstrated poor correlation between VerifyNow-PRU/VerifyNow-Inhib% and TEG-Inhib% (p = 0.07901 and p = 0.3788, respectively). Our study demonstrated that there was poor correlation between VerifyNow P2Y12 and TEG results, and VerifyNow P2Y12 showed a larger proportion of CLR than TEG.
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Affiliation(s)
- Hui-Hui Lv
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, 200433, China
| | - Shuai Wu
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, 200433, China
| | - Xu Liu
- State Key Laboratory of Genetic Engineering and Ministry of Education Key Laboratory of Contemporary Anthropology, School of Life Sciences, Fudan University, Shanghai, China.,Fudan Center for Genetic Epidemiology, School of Life Sciences, Fudan University, Shanghai, China
| | - Xiao-Li Yang
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, 200433, China
| | - Jian-Feng Xu
- State Key Laboratory of Genetic Engineering and Ministry of Education Key Laboratory of Contemporary Anthropology, School of Life Sciences, Fudan University, Shanghai, China.,Fudan Center for Genetic Epidemiology, School of Life Sciences, Fudan University, Shanghai, China.,Program for Personalized Cancer Care, NorthShore University HealthSystem, Evanston, IL, USA
| | - Yang-Tai Guan
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Qiang Dong
- Department of Neurology, Huashan Hospital, Fudan University, Shanghai, China
| | - S Lilly Zheng
- State Key Laboratory of Genetic Engineering and Ministry of Education Key Laboratory of Contemporary Anthropology, School of Life Sciences, Fudan University, Shanghai, China.,Fudan Center for Genetic Epidemiology, School of Life Sciences, Fudan University, Shanghai, China.,Program for Personalized Cancer Care, NorthShore University HealthSystem, Evanston, IL, USA
| | - Jian-Ming Jiang
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, 200433, China
| | - Shi-Xu Li
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, 200433, China
| | - Zheng Luo
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, 200433, China
| | - Li Li
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, 200433, China
| | - Li-Xian An
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, 200433, China
| | - Yan Han
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, 200433, China.
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Zhu DS, Fu J, Zhang Y, Xie C, Wang XQ, Zhang Y, Yang J, Li SX, Liu XB, Wan ZW, Dong Q, Guan YT. Sensitivity and Specificity of Double-Track Sign in the Detection of Transverse Sinus Stenosis: A Multicenter Retrospective Study. PLoS One 2015; 10:e0135897. [PMID: 26291452 PMCID: PMC4546352 DOI: 10.1371/journal.pone.0135897] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Accepted: 07/28/2015] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Transverse sinus stenosis (TSS) is common among patients with cerebral venous sinus thrombosis. No previous studies have reported on double-track sign detected on axial Gd-enhanced T1WI in TSS. This study aimed to determine the sensitivity and specificity of the double-track sign in the detection of TSS. METHODS We retrospectively reviewed medical records of 383 patients with transverse sinus thrombosis (TST) and 30 patients with normal transverse sinus from 5 participating hospitals in china from January 2008 to June 2014. 167 feasible transverse sinuses included in this study were categorized into TSS (n = 76), transverse sinus occlusion (TSO) (n = 52) and transverse sinus normal (TSN) groups (n = 39) according to imaging diagnosis on digital subtraction angiography (DSA) or magnetic resonance venography (MRV). Double-track sign on axial Gd-enhanced T1WI was compared among the three groups. Sensitivity and specificity of double-track sign in detection of TSS were calculated, with final imaging diagnosis of TSS on DSA or MRV as the reference standard. RESULTS Of 383 patients with TST recruited over a 6.5-year period, 128 patients were enrolled in the study, 255 patients were excluded because of insufficient clinical data, imaging finding and delay time, and 30 matched patients with normal transverse sinus were enrolled in the control group. Therefore, double-track sign assessment was conducted in 167 available transverse sinuses of 158 patients. Of the 76 sinuses in TSS group, 51 had double-track sign. Of the other 91 sinuses in TSO and TSN groups, 3 had a false-positive double-track sign. Thus, double-track sign on axial Gd-enhanced T1WI was 67.1% (95% CI 55.3-77.2) sensitive and 96.7% (95% CI 89.9-99.1) specific for detection of TSS. CONCLUSIONS The double-track sign on axial Gd-enhanced T1WI is highly specific and moderate sensitive for detection of TSS. Nevertheless, it could be a direct sign and might provide an early clue for TSS.
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Affiliation(s)
- De-Sheng Zhu
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Department of Neurology, Huashan Hospital, Fudan University, Shanghai, China
| | - Jue Fu
- Department of Pathology, Fuzhou Medical College, Nanchang University, Fuzhou, China
| | - Yi Zhang
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Chong Xie
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Xiao-Qing Wang
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Yue Zhang
- Department of Neurology, Nanyuan Hospital, Beijing, China
| | - Jie Yang
- Department of Neurology, Dong Fang Hospital, School of medicine, Tong Ji University, Shanghai, China
| | - Shi-Xu Li
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Xiao-Bei Liu
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Zhi-Wen Wan
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Qiang Dong
- Department of Neurology, Huashan Hospital, Fudan University, Shanghai, China
- * E-mail: ,
| | - Yang-Tai Guan
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- * E-mail: ,
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23
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Han Y, Lv HH, Liu X, Dong Q, Yang XL, Li SX, Wu S, Jiang JM, Luo Z, Zhu DS, Zhang Y, Zheng Y, Guan YT, Xu JF. Influence of Genetic Polymorphisms on Clopidogrel Response and Clinical Outcomes in Patients with Acute Ischemic Stroke CYP2C19 Genotype on Clopidogrel Response. CNS Neurosci Ther 2015; 21:692-7. [PMID: 26177117 DOI: 10.1111/cns.12426] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [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: 03/30/2015] [Revised: 05/25/2015] [Accepted: 05/25/2015] [Indexed: 01/31/2023] Open
Abstract
OBJECTIVES This study sought to evaluate the influence of the genetic polymorphisms on platelet reactivity and clinical outcomes in acute ischemic stroke patients taking clopidogrel. BACKGROUND Little research has been published on relationships between genetic polymorphisms, platelet reactivity, and clinical outcomes in stroke patients treated with clopidogrel. METHODS Patients hospitalized in Changhai Hospital with acute ischemic stroke were randomly enrolled into treatment with a 75-mg daily maintenance dose of clopidogrel. Genotyping was detected by the MassARRAY iPLEX genotyping system (Sequenom Inc, San Diego, CA), and platelet reactivity was evaluated by the VerifyNow P2Y12 test (Accumetrics Inc., San Diego, CA). Sixteen single nucleotide polymorphisms (SNPs) within 9 genes were selected and high on-clopidogrel platelet reactivity (HPR) was defined as P2Y12 reaction units (PRU) value ≥230. The primary endpoint was ischemic events, including major adverse cardiac events (MACE), recurrence of stroke, transient ischemic attack (TIA), and the composite of vascular death, and the secondary endpoint was bleeding. RESULTS Of the 345 patients recruited, 275 (79.7%) patients were followed up for 1 year and 122 (35.4%) patients were categorized as HPR. Among the SNPs selected, only the CYP2C19*2 allele and the CYP2C19*3 allele were statistically significantly associated with PRU (P < 0.001 and P = 0.003, respectively). Similarly, the prevalence of HPR was associated with CYP2C19*2 and CYP2C19*3 (P < 0.001 and P = 0.001, respectively). During the 1 year of follow-up, a total of 64 (23.3%) cases of clinical events occurred, including 60 ischemic events and 4 bleeding events. There were no correlation between CYP2C19 variant alleles and clinical outcomes (P > 0.05), but a statistically significant relevance was found between the HPR and the ischemic events in 1 year of follow-up (P = 0.001). CONCLUSIONS CYP2C19*2 and CYP2C19*3 had a significant impact on clopidogrel response, but was not associated with ischemic events during 1 year of follow-up in patients with acute ischemic stroke. HPR was an independent risk factor for ischemic events, and the VerifyNow P2Y12 test may be available to guide individualized antiplatelet therapies in stroke patients in China.
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Affiliation(s)
- Yan Han
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Hui-Hui Lv
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Xu Liu
- State Key Laboratory of Genetic Engineering and Ministry of Education Key Laboratory of Contemporary Anthropology, School of Life Sciences, Fudan University, Shanghai, China.,Fudan Center for Genetic Epidemiology, School of Life Sciences, Fudan University, Shanghai, China
| | - Qiang Dong
- Department of Neurology, Huashan Hospital, Fudan University, Shanghai, China
| | - Xiao-Li Yang
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Shi-Xu Li
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Shuai Wu
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Jian-Ming Jiang
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Zheng Luo
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - De-Sheng Zhu
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Yi Zhang
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Yi Zheng
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Yang-Tai Guan
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, China.,Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jian-Feng Xu
- State Key Laboratory of Genetic Engineering and Ministry of Education Key Laboratory of Contemporary Anthropology, School of Life Sciences, Fudan University, Shanghai, China.,Fudan Center for Genetic Epidemiology, School of Life Sciences, Fudan University, Shanghai, China.,Fudan Institute of Urology, Huashan Hospital, Fudan University, Shanghai, China.,Program for Personalized Cancer Care, NorthShore University HealthSystem, Evanston, IL, USA
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Yu ZL, Wang JN, Wu XH, Xie HJ, Han Y, Guan YT, Qin Y, Jiang JM. Tanshinone IIA Prevents Rat Basilar Artery Smooth Muscle Cells Proliferation by Inactivation of PDK1 During the Development of Hypertension. J Cardiovasc Pharmacol Ther 2015; 20:563-71. [PMID: 25736282 DOI: 10.1177/1074248415574743] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2014] [Accepted: 12/28/2014] [Indexed: 12/13/2022]
Abstract
Basilar vascular smooth muscle cells (BASMCs) hyperplasia is a prominent feature of cerebrovascular remodeling and stroke during the development of hypertension. Tanshinone IIA (Tan) has been reported to exhibit a protective effect against the pathological features of hypertension. Previous studies have shown that phosphoinostitide-3 kinase (PI3K)/3'-phosphoinostitide dependent kinase (PDK1)/AKT pathway is involved in the regulation of proliferation of various cell types. Therefore, there may be a crosstalk between Tan antihypertension processes and PI3K/PDK1/AKT proliferative effect in BASMCs. To test this hypothesis, we used a 2-kidney, 2-clip hypertension model to examine the effect of Tan on PI3K/PDK1/AKT pathway by cellular, molecular, and biochemical approaches. Our results revealed that the abundance of PDK1 in plasma was paralleled with an increase in blood pressure and the cross-sectional area of basilar artery in hypertensive rats. Tan decreased blood pressure and hypertension-induced PDK1 phosphorylation but produced no effect on the phosphorylation of PI3K. Moreover, Tan attenuated endothelin 1 induced the activation of PDK1/AKT pathway in rat BASMCs. Tan could inhibit cell cycle transition by regulating the expression of cyclin D1 and p27, in turn, prevent proliferation of BASMCs. Our study provides a novel mechanism by which Tan prevents cerebrovascular cell proliferation during hypertension, and thus Tan may be a potential therapeutic agent for cerebrovascular remodeling and stroke.
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Affiliation(s)
- Zhi-Liang Yu
- Department of Neurology, Shanghai Seventh People's Hospital, Shanghai, China
| | - Jie-Ning Wang
- Department of Rehabilitation Medicine, Shanghai Seventh People's Hospital, Shanghai, China
| | - Xiao-Hua Wu
- Department of Neurology, Shanghai Seventh People's Hospital, Shanghai, China
| | - Hui-Jun Xie
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Ying Han
- Department of Neurology, Shanghai Seventh People's Hospital, Shanghai, China
| | - Yang-Tai Guan
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Yong Qin
- Department of Neurology, Shanghai Seventh People's Hospital, Shanghai, China
| | - Jian-Ming Jiang
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, China
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Zhu DS, Fu J, Zhang Y, Li SX, Zhang GX, Guan YT, Dong Q. Neurological antiphospholipid syndrome: Clinical, neuroimaging, and pathological characteristics. J Neurol Sci 2014; 346:138-44. [DOI: 10.1016/j.jns.2014.08.010] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2014] [Revised: 07/24/2014] [Accepted: 08/04/2014] [Indexed: 10/24/2022]
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Guan YT, Mao LL, Jia J, Dong CS, Zhou XM, Zheng SL, Liu H, Kong HM, Zhen XC, Cheng J. Postischemic administration of a potent PTEN inhibitor reduces spontaneous lung infection following experimental stroke. CNS Neurosci Ther 2013; 19:990-3. [PMID: 24165543 DOI: 10.1111/cns.12188] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2013] [Revised: 09/17/2013] [Accepted: 09/19/2013] [Indexed: 11/29/2022] Open
Affiliation(s)
- Yang-Tai Guan
- Department of Neurology, Changhai Hospital Affiliated to the Second Military Medical University, Shanghai, China
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Wu S, Li K, Yan Y, Gran B, Han Y, Zhou F, Guan YT, Rostami A, Zhang GX. Intranasal Delivery of Neural Stem Cells: A CNS-specific, Non-invasive Cell-based Therapy for Experimental Autoimmune Encephalomyelitis. ACTA ACUST UNITED AC 2013; 4. [PMID: 24244890 DOI: 10.4172/2155-9899.1000142] [Citation(s) in RCA: 31] [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] [Indexed: 12/31/2022]
Abstract
The therapeutic potential of adult neural stem cells (aNSCs) has been shown in EAE, an animal model of MS, administered by either i.c.v. or i.v. injection. However, i.c.v. is an invasive approach, while the i.v. route of aNSCs is associated with a non-specific immune suppression in the periphery. Here we demonstrate that intranasal (i.n.) delivery of fluorescently labeled aNSCs resulted in their appearance in the olfactory bulb, cortex, hippocampus, striatum, brainstem, and spinal cord. These cells induce functional recovery from ongoing EAE similar to that achieved with i.v. injected aNSCs, with comparable anti-inflammatory and remeylination effects in CNS inflammatory foci. Importantly, unlike the peripheral immune suppression brought about by i.v. NSCs, intranasal delivery did not influence peripheral immune responses. We conclude that aNSCs can be reliably delivered to the CNS via the nasal route to induce functional recovery and confer immunomodulation and remyelination in EAE. Intranasal administration of NSCs provides a highly promising, noninvasive and CNS-specific alternative to current cell-based approaches in treating EAE.
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Affiliation(s)
- Shuai Wu
- Department of Neurology, Thomas Jefferson University, Philadelphia, PA, USA ; Department of Neurology, Changhai Hospital, the Second Military Medical University, Shanghai, China
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Affiliation(s)
- She-Qing Zhang
- Department of Neurology, Changhai Hospital, Shanghai 200433, China.
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Wang HY, Guan YT, Mizuno T, Tsuno H. RO filtration of biologically treated textile and dyeing effluents using ozonation as a pre-treatment. Water Sci Technol 2010; 62:751-758. [PMID: 20729575 DOI: 10.2166/wst.2010.126] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Bench-scale experiments were conducted to investigate the application of ozonation pre-treatment for biologically treated textile and dyeing wastewater to improve performance of the RO process. Based on ozonation experiments, four specific ozone consumptions (SOC), 0, 0.3, 0.6, 4.0 mg O₃/mg DOC₀ were chosen for study of the effects of ozonation on the reverse osmosis (RO) process. Membrane flux was recorded. Also, the permeate water quality parameters such as TOC, conductivity were analyzed. In addition, fouled membrane cleaning was studied. The study further examined the nature and mechanisms of membrane fouling using scanning electron microscopy (SEM) and the energy dispersive X-ray spectrometer (EDS). The effect of ozonation on RO filtration was found to depend on SOC. The study revealed that significant improvement can be achieved in the efficiency of RO filtration by employing ozonation with 0.6 mg O₃/mg DOC₀ SOC. Although the product water purity slightly decreased, the ozonation pre-treatment showed advantages at 0.6 mg O₃/mg DOC₀ SOC for the following: (i) mitigation of flux decline due to membrane fouling; (ii) improvement in foulants cleanability. In addition, hypotheses were put forward to explain the reasons from the aspect of organic matter characteristics changed by ozonation, such as changing on functional groups and molecular weight of organic matter.
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Affiliation(s)
- H Y Wang
- Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, P. R. China.
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Cheng Q, Miao L, Zhang J, Guan YT, Liu ZG, Wang X, Sun XJ, Zhao ZX, Song YJ, Ding XY, Guo ZL, Cheng XJ, Chen SD, Jiang GX, Fredrikson S. Clinical features of patients with multiple sclerosis from a survey in Shanghai, China. Mult Scler 2008; 14:671-8. [PMID: 18424476 DOI: 10.1177/1352458507087844] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Objective To describe clinical features of patients with multiple sclerosis (MS) in Shanghai, China. Methods Prevalent patients with MS were identified and investigated by a network of physicians in 11 districts of Shanghai during the period from 1 September 2004 to 31 August 2005. Admission registries of each hospital in the study area were checked systematically for patients with a diagnosis of MS, neuromyelitis optica or other demyelinating disorders. All patients with collected information were evaluated by four senior neurologists according to the McDonald criteria. Results There were 249 (146 female and 103 male) patients with a confirmed MS diagnosis, at a female-to-male ratio of 1.4. The mean age at onset of MS was 37.4 years for the 249 patients with MS and, on the prevalence day, 42.7 years. The most frequent location of clinical MS lesions in the central nervous system was the spinal cord (61%), followed by the cerebrum (55%) and optic nerves (41%). Nearly all (96%) of the patients with MS had been examined by magnetic resonance imaging, and 226 (94%) patients of those examined were suggestive of MS. No family history of MS was found in any of the patients. Most (86%) of the patients had no or mild disability on the prevalence day (31 December 2004). Almost all (96%) patients with MS had been treated with corticosteroids. Conclusion Clinical features of patients with MS are described based on the information from the largest case series reported among Chinese. Comparisons and discussions are made with findings from the other populations.
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Affiliation(s)
- Q Cheng
- Department of Neurology, Ruijin Hospital, Medical School of Shanghai Jiao Tong University, Shanghai, China; School of Public Health, Shanghai Jiao Tong University, Shanghai, China
| | - L Miao
- Department of Neurology, Renji Hospital, Medical School of Shanghai Jiao Tong University, Shanghai, China
| | - J Zhang
- Department of Neurology, Ruijin Hospital, Medical School of Shanghai Jiao Tong University, Shanghai, China
| | - YT Guan
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - ZG Liu
- Department of Neurology, Xinhua Hospital, Medical School of Shanghai Jiao Tong University, Shanghai, China
| | - X Wang
- Department of Neurology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - XJ Sun
- Department of Neurology, Shanghai No. 6 People’s Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - ZX Zhao
- Department of Neurology, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - YJ Song
- Department of Neurology, Ruijin Hospital, Medical School of Shanghai Jiao Tong University, Shanghai, China
| | - XY Ding
- Department of Radiology, Ruijin Hospital, Medical School of Shanghai Jiao Tong University, Shanghai, China
| | - ZL Guo
- Department of Neurology, Ruijin Hospital, Medical School of Shanghai Jiao Tong University, Shanghai, China
| | - XJ Cheng
- Department of Neurology, Ruijin Hospital, Medical School of Shanghai Jiao Tong University, Shanghai, China
| | - SD Chen
- Department of Neurology, Ruijin Hospital, Medical School of Shanghai Jiao Tong University, Shanghai, China; Institute of Health Science, Shanghai Institutes of Biological Sciences (SIBS), Chinese Academy of Science (CAS) and Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - GX Jiang
- School of Public Health, Shanghai Jiao Tong University, Shanghai, China; Department of Public Heath Sciences, Karolinska Institute, Stockholm, Sweden
| | - S Fredrikson
- Division of Neurology, Karolinska Institute, Karolinska University Hospital, Stockholm, Sweden
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Li Y, Wong T, Chung J, Guo YP, Hu JY, Guan YT, Yao L, Song QW, Newton E. In vivo protective performance of N95 respirator and surgical facemask. Am J Ind Med 2006; 49:1056-65. [PMID: 17096360 DOI: 10.1002/ajim.20395] [Citation(s) in RCA: 96] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND The SARS outbreak in 2003 has spawned a major controversy concerning protective performance facemasks for healthcare workers. This study reports a study on in-vivo protective performance of surgical masks and N95 respirators. METHODS Typical surgical masks and N95 respirators used in Hong Kong hospitals were tested in comparison with those treated with nano-functional materials (called nano-masks) on various physical properties and in-vivo wear filtration efficiency, as well as usability test in hospitals for surgical masks. RESULTS Tests on physical properties showed that N95 respirators had significantly lower air permeability and water vapor permeability than surgical masks. The in-vivo filtration tests illustrated that N95 respirators filtered out 97% of potassium chloride (KCl) solution, while surgical masks filtered out 95% of KCl solution. Nano-masks show stronger water repellency and antibacterial activities, but no difference in usability, comparing with normal N95 and surgical masks. CONCLUSIONS Surgical masks can provide in-vivo filtration protection of 95% filtration efficiency. N95 respirators provide higher in-vivo filtration efficiency of 97% with significant reduction of air permeability and water vapor permeability. Compared to normal surgical masks/respirators, the nano-masks can provide additional protective functions in stopping capillary diffusion and antibacterial activities.
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Affiliation(s)
- Y Li
- Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.
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Zhao HZ, Yang HW, Guan YT, Jiang ZP. The transformation of aluminium species in the processes of coagulation, sedimentation and filtration. Water Sci Technol 2006; 53:225-33. [PMID: 16752785 DOI: 10.2166/wst.2006.227] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
The aluminium toxicity is closely related to aluminium species. In this work aluminium was fractionated into seven forms: Al(T), Al(Sus), Al(C + S), Al(S), Al(C), Al(O) and Al(I). Four Al-based coagulants and simulated raw water were used in the laboratory to investigate the aluminium transformation in coagulation, sedimentation and filtration processes. It is the use of Al-based coagulants that contributes more to the increase of the residual aluminium for the low-turbidity raw water, while the Al-based coagulants, especially the polymeric aluminium coagulants, work to remove the aluminium from the high-turbidity raw water. In the case of traditional coagulants, the increase of the turbidity or the dissolved organic carbon (DOC) concentration in the raw water results in a high concentration of Al(C + S). The removal rate of aluminium species in the filtration process is not only related to its size: RAl(Sus) > RAl(C+S), RAl(C) > RAl(S), but also to the physicochemical properties of aluminium species and filter. For the kaolin-polyaluminium chloride system, a lower removal rate of aluminium species results is due to the complexation of humic acid and aluminium species.
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Affiliation(s)
- H Z Zhao
- Department of Environmental Science and Engineering, Tsinghua University, Beijing, China.
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Wu XL, Guan YT, Zhang X, Huang X, Qian Y. Phosphorus removal and greenhouse gas N2O emission in a lime-induced aerobic sludge granule process. Environ Technol 2002; 23:677-684. [PMID: 12118619 DOI: 10.1080/09593332308618383] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Aerobic sludge granulation was achieved in an activated sludge process continuously fed with lime (Ca2+ 100 mg l(-1) influent) every other day. Eighteen days after lime addition, activated sludge granules with the size of 0.5-2.2 mm were formed, which occupied 10-25% of total sludge volume. Sludge volume index (SVI) was reduced to an average of 50 ml g(-1), which increased average sludge concentration to 3.6-5.0 g VSS l(-1), 1.6-2.1 times of that of control. Greenhouse gas N2O emission was also significantly reduced: N2O concentration from the lime-addition reactor was 5-15 ppmv, 47-61% of that of control, Effluent PO4-P concentration was generally lower than 1 mg l(-1) when average influent PO4-P concentration was 6.07-6.37 mg l(-1). Total phosphorus (TP) and total nitrogen (TN) removal efficiencies were around 89.6% and 14.5-16.1%, over 3.5 and 1 times higher than those of control, respectively. COD removal rate in the lime-addition reactor was 2.05-2.48 kg COD m(-3) d(-1), higher than 1.34-1.61 kg COD m(-3) d(-1) in the control.
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Affiliation(s)
- X L Wu
- Department of Environmental Engineering, Tsinghua University, Beijing, China
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Shields CB, Guan YT, Almond PR, Garretson HD, Lindberg RD. Radioneurosurgery using the LINAC scalpel: technique, indications, and literature review. J Ky Med Assoc 1993; 91:276-83. [PMID: 8371042] [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: 01/30/2023]
Abstract
Two available commercial units for radiosurgery are the modified linear accelerator (LINAC scalpel) and the gamma knife. Advantages of the LINAC scalpel over the gamma knife are its greater accuracy, the availability of a wide range of collimator sizes that allow for a more homogeneous field of radiation for large lesions, state-of-the-art computer software programs, and lower expense. Radiosurgery does not require an incision, is painless, and can be performed on an outpatient basis. It is ideally suited for the treatment of inaccessible, deep intracranial lesions that are radioresistant to conventional forms of radiotherapy, such as arteriovenous malformations, meningiomas, vestibular schwannomas, selected primary brain tumors, and cerebral metastases. Radiosurgery is an attractive treatment alternative to conventional neurosurgery for several intracranial lesions.
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Affiliation(s)
- C B Shields
- Department of Surgery, University of Louisville, KY
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Wang HL, Guan YT. [Mental disorders in cancer patients and their management]. Zhonghua Yi Xue Za Zhi 1989; 69:416-8. [PMID: 2688846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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