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Zhang J, Zhao Y, Peng Z, Yang M, Zou W, Wu X, Wang C, Si M, Chen C. The role of the transcriptional repressor CssR in Corynebacterium glutamicum in response to phenolic compounds. Heliyon 2024; 10:e27929. [PMID: 38509974 PMCID: PMC10950717 DOI: 10.1016/j.heliyon.2024.e27929] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 03/05/2024] [Accepted: 03/08/2024] [Indexed: 03/22/2024] Open
Abstract
The cssR gene (ncgl1578) of Corynebacterium glutamicum encodes a repressor of the TetR (tetracycline regulator) family. Its role in the stress response to antibiotics/heavy metals has been investigated, but how CssR functions in response to phenolic compounds in C. glutamicum has been rarely studied. In this study, we applied transcriptomic analysis, β-galactosidase analysis, qRT-PCR, and EMSAs to analyze the target genes and functions of CssR in response to phenolic compounds. Consistent with the upregulation of genes involved in the degradation of phenolic compounds, the ΔcssR mutant was more resistant to various phenolic compounds than was the wild-type strain. Furthermore, the addition of phenolic compounds induced the expression of corresponding genes (ncgl0283, ncgl1032, ncgl1111, ncgl2920, ncgl2923, and ncgl2952) in vivo. However, the DNA binding activity of CssR to the promoter of phenolic compound-degrading genes was undetected in vitro. Additionally, we also found that CssR indirectly negatively regulates the expression of cell wall/membrane/envelope biogenesis-related genes, which may enhance resistance to stress caused by phenolic compounds. Together, our findings demonstrate that CssR is a key regulator that copes with stress conditions induced by phenolic compounds, thus greatly expanding our understanding of the functions of TetR family transcription factors.
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Affiliation(s)
- Ju Zhang
- Key Laboratory of Plant Genetics and Molecular Breeding, Henan Key Laboratory of Crop Molecular Breeding & Bioreactor, College of Life Science and Agronomy, Zhoukou Normal University, Zhoukou, 466001, Henan, China
- College of Horticulture, Agricultural University of Hebei/Key Laboratory for Vegetable Germplasm Enhancement and Utilization of Hebei/Collaborative Innovation Center of Vegetable Industry in Hebei, Baoding, 071001, China
| | - Yuying Zhao
- College of Life Sciences, Qufu Normal University, Qufu, 273165, Shandong, China
| | - Zhaoxin Peng
- College of Life Sciences, Qufu Normal University, Qufu, 273165, Shandong, China
| | - MingFei Yang
- College of Life Sciences, Qufu Normal University, Qufu, 273165, Shandong, China
| | - Wenyu Zou
- College of Life Sciences, Qufu Normal University, Qufu, 273165, Shandong, China
| | - Xinyu Wu
- College of Life Sciences, Qufu Normal University, Qufu, 273165, Shandong, China
| | - Chenghui Wang
- College of Life Sciences, Qufu Normal University, Qufu, 273165, Shandong, China
| | - Meiru Si
- College of Life Sciences, Qufu Normal University, Qufu, 273165, Shandong, China
| | - Can Chen
- Key Laboratory of Plant Genetics and Molecular Breeding, Henan Key Laboratory of Crop Molecular Breeding & Bioreactor, College of Life Science and Agronomy, Zhoukou Normal University, Zhoukou, 466001, Henan, China
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Li Y, Chen S, Bao Q, Yang M, Li J. Real-world safety and efficacy endovascular treatment versus standard medical treatment for basilar artery occlusion: A systematic review and meta-analysis. Clin Neurol Neurosurg 2024; 236:108096. [PMID: 38181677 DOI: 10.1016/j.clineuro.2023.108096] [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: 07/11/2023] [Revised: 10/13/2023] [Accepted: 12/19/2023] [Indexed: 01/07/2024]
Abstract
PURPOSE We acknowledge that between endovascular treatment (EVT) has emerged as a promising therapeutic approach, with some evidence of benefits observed in clinical trials. However, there remains a significant gap in the evidence regarding the real-world application and effectiveness of EVT.The objective of this study was to comprehensively evaluate the safety and efficacy differences between EVT and standard medical treatment (SMT) in patients with basilar artery occlusion(BAO). METHODS Real-world studies (RWSs) on patients with BAO who underwent EVT and SMT were identified through searches in EMBASE, PubMed, and Cochrane Library databases. The efficacy outcomes included good clinical outcomes [defined as modified Rankin Scale (mRS) scores of 0-3 at 90 days], excellence clinical outcomes (defined as mRS scores of 0-2 at 90 days), 90-day mortality rate, and reperfusion status. The safety outcome was symptomatic intracranial hemorrhage (sICH). Subgroup analysis was conducted based on study type (prospective and retrospective studies). The relationship between EVT and SMT with the prognosis of BAO patients was expressed using odds ratios (OR) with a 95% confidence interval (95% CI). RESULTS The seven studies involved a total of 2885 patients. After conducting sensitivity analysis and excluding articles with high heterogeneity, EVT demonstrated a significant association with good clinical outcomes at 90 days (OR=4.01, 95% CI: 2.60-6.19) and excellence clinical outcomes at 90 days (OR=5.70, 95% CI: 3.18-10.22) compared to SMT. Additionally, EVT showed a lower correlation with 90-day mortality rate compared to the SMT group (OR=0.35, 95% CI: 0.25-0.47). Subgroup analysis based on study type revealed that EVT had higher rates of successful reperfusion (retrospective study group: OR=7.97, 95% CI: 4.83-13.15; prospective study group: OR=51.57, 95% CI: 29.76-89.38) than the SMT group in both subgroups. The presence of sICH was not statistically significant in the retrospective study group (OR=1.20, 95% CI: 0.58-2.48) and showed high heterogeneity. However, in the prospective study group, EVT exhibited a higher risk of bleeding compared to SMT (OR=11.42, 95% CI: 2.65-49.20). CONCLUSIONS In summary, our real-world study aligns with the conclusions of recently published randomized controlled trials research. When comparing EVT and SMT in the treatment of BAO, EVT shows a higher correlation with favorable clinical outcomes, higher rates of successful reperfusion, and lower mortality rates. However, it does come with an increased risk of sICH.
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Affiliation(s)
- YiMing Li
- Graduate School, Qinghai University, Xining, China
| | - ShuJun Chen
- Graduate School, Qinghai University, Xining, China
| | - QiangJi Bao
- Department of Neurosurgery, Guang'an People's Hospital, Guang'an, Sichuan, China
| | - MingFei Yang
- Department of Neurosurgery, Qinghai Provincial People's Hospital, Xining, Qinghai, China.
| | - Jing Li
- Department of Community Health Education,Institute for Health Education of Qinghai Province, Xining, Qinghai, China.
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Bao Q, Huang X, Wu X, Chen S, Yang J, Zhang J, Li J, Yang M. Implications of frailty in acute ischemic stroke receiving endovascular treatment: systematic review and meta-analysis. Aging Clin Exp Res 2023; 35:969-978. [PMID: 36964867 DOI: 10.1007/s40520-023-02383-1] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Accepted: 03/01/2023] [Indexed: 03/26/2023]
Abstract
BACKGROUND Frailty is a state of cumulative degeneration of bodily functions that is consistently associated with poor outcomes in older people following illness. Combined stroke intervention and frailty may yield additive and synergistic effects adults with stroke. OBJECTIVE To evaluate the safety and efficacy of endovascular therapy (EVT) in frail patients. METHODS We conducted a systematic review of the relationship between debilitation and acute ischemic stroke (AIS) after EVT. Until August 2022, researchers have searched three databases (Pubmed, EMBASE and Cochrane). Random-effects meta-analysis, combined ratio (OR) and 95% confidence interval (95%CI) were used to assess efficacy values. The I2 statistic was used to assess heterogeneity. Comprehensive meta-analysis software was used for meta-analysis. RESULTS We ultimately included eight studies including 3662 non-overlapping participants. Four studies used the Clinical Frailty Scale (CFS), two studies used the Hospital Frailty Risk Score (HFRS), a study used frailty index and a study used the comprehensive geriatric assessment (CGA). Frailty prevalence: 35%; 95% CI, 0.27-0.43; low quality evidence, downgraded due to heterogeneity, bias. Random effects showed that poor functional outcome (5 studies, OR 1.956, 95% CI 1.256-3.048) and mortality (9 studies, OR 2.320, 95% CI 1.680-3.205) was significantly associated with frailty. In adjusted analyses, poor functional outcome (4 studies, ORadj 1.189, 95% CI 1.043-1.357), and mortality (3 studies, ORadj 1.036, 95% CI 1.008-1.065) were significantly associated with frailty. CONCLUSION Pre-stroke frailty is an important predictor of poor prognosis assessed by EVT and can be added to the classical predictors of stroke outcome. Routine assessment of pre-stroke frailty can help patients to make decisions about the efficacy of their choice of EVT.
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Affiliation(s)
- QiangJi Bao
- Department of Neurosurgery, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - XiaoDong Huang
- Department of Neurosurgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, China
| | - XinTing Wu
- Graduate School, Qinghai University, Xining, Qinghai, China
| | - ShuJun Chen
- Graduate School, Qinghai University, Xining, Qinghai, China
| | - JinCai Yang
- Graduate School, Qinghai University, Xining, Qinghai, China
| | - JingNi Zhang
- Department of Science and Education, Qinghai Provincial People's Hospital, Xining, Qinghai, China.
| | - Jing Li
- Department of Community Health Education, Institute for Health Education of Qinghai Province, Xining, 810000, Qinghai, China.
| | - MingFei Yang
- Department of Neurosurgery, Qinghai Provincial People's Hospital, Xining, 810007, Qinghai, China.
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Han L, Zheng W, Qian SY, Yang MF, Lu YZ, He ZJ, Kang JC. New Guaiane-Type Sesquiterpenoids Biscogniauxiaols A-G with Anti-Fungal and Anti-Inflammatory Activities from the Endophytic Fungus Biscogniauxia Petrensis. J Fungi (Basel) 2023; 9:393. [PMID: 37108848 PMCID: PMC10144765 DOI: 10.3390/jof9040393] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 03/12/2023] [Accepted: 03/14/2023] [Indexed: 04/29/2023] Open
Abstract
Seven undescribed guaiane-type sesquiterpenoids named biscogniauxiaols A-G (1-7) were isolated from the endophytic fungus Biscogniauxia petrensis on Dendrobium orchids. Their structures were determined by extensive spectroscopic analyses, electronic circular dichroism (EC) and specific rotation (SR) calculations. Compound 1 represented a new family of guaiane-type sesquiterpenoids featuring an unprecedented [5/6/6/7] tetracyclic system. A plausible biosynthetic pathway for compounds 1-7 was proposed. The anti-fungal, anti-inflammatory and multidrug resistance reversal activities of the isolates were evaluated. Compounds 1, 2 and 7 exhibited potent inhibitory activities against Candida albicans with MIC values ranging from 1.60 to 6.30 μM, and suppressed nitric oxide (NO) production with IC50 ranging from 4.60 to 20.00 μM. Additionally, all compounds (100 μg/mL) enhanced the cytotoxicity of cisplatin in cisplatin-resistant non-small cell lung cancer cells (A549/DDP). This study opened up a new source for obtaining bioactive guaiane-type sesquiterpenoids and compounds 1, 2, and 7 were promising for further optimization as multifunctional inhibitors for anti-fungal (C. albicans) and anti-inflammatory purposes.
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Affiliation(s)
- Long Han
- College of Life Sciences, Guizhou University, Guiyang 550025, China
- Engineering and Research Center for Southwest Bio-Pharmaceutical Resources of National Education Ministry of China, Guizhou University, Guiyang 550025, China
| | - Wen Zheng
- College of Life Sciences, Guizhou University, Guiyang 550025, China
- Engineering and Research Center for Southwest Bio-Pharmaceutical Resources of National Education Ministry of China, Guizhou University, Guiyang 550025, China
| | - Sheng-Yan Qian
- College of Life Sciences, Guizhou University, Guiyang 550025, China
- Engineering and Research Center for Southwest Bio-Pharmaceutical Resources of National Education Ministry of China, Guizhou University, Guiyang 550025, China
| | - Ming-Fei Yang
- College of Life Sciences, Guizhou University, Guiyang 550025, China
- Engineering and Research Center for Southwest Bio-Pharmaceutical Resources of National Education Ministry of China, Guizhou University, Guiyang 550025, China
| | - Yong-Zhong Lu
- Guizhou Institute of Technology, School of Food and Pharmaceutical Engineering, Guiyang 550003, China
| | - Zhang-Jiang He
- Engineering and Research Center for Southwest Bio-Pharmaceutical Resources of National Education Ministry of China, Guizhou University, Guiyang 550025, China
| | - Ji-Chuan Kang
- College of Life Sciences, Guizhou University, Guiyang 550025, China
- Engineering and Research Center for Southwest Bio-Pharmaceutical Resources of National Education Ministry of China, Guizhou University, Guiyang 550025, China
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Wang RN, Wu P, Yao Q, Huangfu SH, Zhang J, Zhang CX, Li L, Zhou HT, Sun QT, Yan R, Wu ZF, Yang MF, Wang YT, Li SJ. [Impact of different obesity patterns on coronary microvascular function in male patients with non-obstructive coronary artery disease]. Zhonghua Xin Xue Guan Bing Za Zhi 2022; 50:1080-1086. [PMID: 36418276 DOI: 10.3760/cma.j.cn112148-20220914-0071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Objective: This study sought to investigate the impact of different obesity patterns on coronary microvascular function in male patients with non-obstructive coronary artery disease. Methods: We retrospectively analyzed clinical data of male patients diagnosed with suspected coronary microvascular dysfunction (CMD) in the First Hospital of Shanxi Medical University between December 2015 and August 2021. All patients underwent the one-day rest and stress 13N-ammonia positron emission tomography myocardial perfusion imaging. Overall obesity was defined by body mass index (BMI) ≥28 kg/m2 and abdominal obesity was defined by waist circumference ≥90 cm. Hyperemic myocardial blood flow (MBF)<2.3 ml·min-1·g-1 or coronary flow reserve (CFR)<2.5 were referred as CMD. All patients were grouped based on their BMI and waist circumference. MBF, CFR, the incidence of CMD, hemodynamic parameters, and cardiac function were compared among the groups. Results: A total of 136 patients were included. According to BMI and waist circumference, patients were categorized into 3 groups: control group (n=45), simple abdominal obesity group (n=53) and compound obesity group (n=38). Resting MBF did not differ between groups (F=0.02,P=0.994). Compared with the control group, hyperemic MBF was significantly lower in the simple abdominal obesity and compound obesity groups ((2.82±0.64) ml·min-1·g-1, (2.44±0.85) ml·min-1·g-1 and (2.49±0.71) ml·min-1·g-1, both P<0.05, respectively). Hyperemic MBF was comparable among the groups of patients with obesity (P=0.772). CFR was significantly lower in the simle abdominal obesity group compared with the control group (2.87±0.99 vs. 3.32±0.62,P=0.012). Compared with the control group, CFR tended to be lower in the compound obesity group (3.02±0.91 vs. 3.32±0.62,P=0.117). The incidence of CMD was significantly higher in both the simple abdominal obesity and compound obesity groups than in the control group (62.3%, 52.6% vs. 22.2%, both P<0.01, respectively). Waist circumference was an independent risk factor for male CMD (OR=1.057, 95%CI: 1.013-1.103, P=0.011). Conclusions: In male patients with non-obstructive coronary artery disease, abdominal obesity is associated with decreased coronary microvascular function. Male patients with simple abdominal obesity face the highest risk of CMD.
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Affiliation(s)
- R N Wang
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, Shanxi Key Laboratory of Molecular Imaging, Taiyuan 030001, China
| | - P Wu
- Province-Ministry Co-construction Collaborative Innovation Center for Molecular Imaging of Precision Medicine, Taiyuan 030001, China
| | - Q Yao
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, Shanxi Key Laboratory of Molecular Imaging, Taiyuan 030001, China
| | - S H Huangfu
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, Shanxi Key Laboratory of Molecular Imaging, Taiyuan 030001, China
| | - J Zhang
- Department of Cardiology, First Hospital of Shanxi Medical University, Taiyuan 030001, China
| | - C X Zhang
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, Shanxi Key Laboratory of Molecular Imaging, Taiyuan 030001, China
| | - L Li
- Province-Ministry Co-construction Collaborative Innovation Center for Molecular Imaging of Precision Medicine, Taiyuan 030001, China
| | - H T Zhou
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, Shanxi Key Laboratory of Molecular Imaging, Taiyuan 030001, China
| | - Q T Sun
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, Shanxi Key Laboratory of Molecular Imaging, Taiyuan 030001, China
| | - R Yan
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, Shanxi Key Laboratory of Molecular Imaging, Taiyuan 030001, China
| | - Z F Wu
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, Shanxi Key Laboratory of Molecular Imaging, Taiyuan 030001, China
| | - M F Yang
- Department of Nuclear Medicine, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100043, China
| | - Y T Wang
- Department of Nuclear Medicine, Third Affiliated Hospital of Soochow University (First People's Hospital of Changzhou), Changzhou 213003, China
| | - S J Li
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, Shanxi Key Laboratory of Molecular Imaging, Taiyuan 030001, China
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Bao Q, Zhang J, Wu X, Zhao K, Guo Y, Yang M, Du X. Clinical Significance of Plasma D-Dimer and Fibrinogen in Outcomes after Stroke: A Systematic Review and Meta-Analysis. Cerebrovasc Dis 2022; 52:318-343. [DOI: 10.1159/000526476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 08/05/2022] [Indexed: 11/19/2022] Open
Abstract
<b><i>Background:</i></b> There is increasing evidence on the prognostic significance of D-dimer and fibrinolysis in stroke. However, the systematic analysis of their relationship with adverse outcomes after stroke is lacking. Herein, we comprehensively assessed the correlation of D-dimer and fibrinolysis with stroke outcomes through meta-analysis. <b><i>Methods:</i></b> Studies for systematic literature review were retrieved from PubMed, EMBASE, and Cochrane Library databases. The association of D-dimer and fibrinolysis with outcomes of stroke patients was expressed as an odds ratio (OR) with 95% confidence intervals (95% CI). <b><i>Results:</i></b> Totally, 52 studies comprising 21,473 stroke patients were included. The results showed that the high D-dimer level was significantly associated with peripheral venous thrombosis after stroke (OR 1.03, 95% CI 1.01–1.05), poor outcome (MRS >2) after stroke (OR 1.731, 95% CI 1.464–2.048), death after stroke (OR 2.367, 95% CI 1.737–3.224), stroke recurrence (OR 1.229, 95% CI 1.113–1.358), and early neurologic deterioration (NIHSS >4) (OR 1.791, 95% CI 1.117–2.870). Moreover, high fibrinogen level was significantly associated with poor outcome (MRS >2) after stroke (OR 1.650, 95% CI 1.314–2.071), death after stroke (OR 1.310, 95% CI 1.128–1.520), stroke recurrence (OR 1.228, 95% CI 1.166–1.422), early neurologic deterioration (NIHSS >4) (OR 2.381, 95% CI 1.156–4.904), and coronary events after stroke (OR 1.427, 95% CI 1.232–1.653). <b><i>Conclusion:</i></b> Fibrinogen and D-dimer may be associated with adverse outcomes in patients with stroke, suggesting that they may serve as possible biomarkers for post-stroke adverse outcomes.
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Yang JC, Bao QJ, Guo Y, Chen SJ, Zhang JT, Zhang Q, Zhou P, Yang MF. Endovascular thrombectomy in acute ischemic stroke patients with prestroke disability (mRS ≥2): A systematic review and meta-analysis. Front Neurol 2022; 13:971399. [PMID: 36188370 PMCID: PMC9520304 DOI: 10.3389/fneur.2022.971399] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Accepted: 08/19/2022] [Indexed: 11/29/2022] Open
Abstract
Objective The effect of endovascular thrombectomy (EVT) in acute ischemic stroke patients with prestroke disability (modified Rankin Scale score, mRS) ≥2) has not been well-studied. This study aimed to assess the safety and benefit of EVT in patients with prestroke disability. Methods According to PRISMA guidelines, literature searching was performed using PubMed, Embase, and Cochrane databases, for a series of acute ischemic stroke patients with prestroke mRS ≥2 treated by EVT. Random-effects meta-analysis was used to pool the rate of return to prestroke mRS and mortality at 3-month follow-up. Results In total, 13 observational studies, with 2,625 patients, were analyzed. The rates of return to prestroke mRS in patients with prestroke mRS of 2–4 were 20% (120/588), 27% (218/827), and 31% (34/108), respectively. Patients with prestroke disability treated by EVT had a higher likelihood of return to prestroke mRS (relative risk, RR, 1.86; 95% CI 1.28–2.70) and a lower likelihood of mortality (RR 0.75; 95%CI 0.58–0.97) compared with patients with standard medical treatment. Successful recanalization (Thrombolysis in Cerebral Infarction grade 2b-3) after EVT gave a higher likelihood of return to prestroke mRS (RR 2.04; 95% CI 1.17–3.55) and lower mortality (RR 0.72; 95% CI 0.62–0.84) compared with unsuccessful reperfusion. Conclusions Acute ischemic stroke patients with prestroke disability may benefit from EVT. Withholding EVT on the sole ground of prestroke disabilities may not be justified. Systematic Review Registration:https://www.crd.york.ac.uk/prospero/.
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Affiliation(s)
- Jin-Cai Yang
- Graduate School, Qinghai University, Xining, China
| | - Qiang-Ji Bao
- Graduate School, Qinghai University, Xining, China
| | - Yu Guo
- Graduate School, Qinghai University, Xining, China
| | - Shu-Jun Chen
- Graduate School, Qinghai University, Xining, China
| | | | - Qiang Zhang
- Department of Neurosurgery, Qinghai Provincial People's Hospital, Xining, China
| | - Ping Zhou
- Department of Neurosurgery, Qinghai Provincial People's Hospital, Xining, China
| | - Ming-Fei Yang
- Department of Neurosurgery, Qinghai Provincial People's Hospital, Xining, China
- *Correspondence: Ming-Fei Yang
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Yang SQ, Hao M, Gao YL, Zhang YH, Yang MF, Jin ML, Fang Q. [Multiple pulmonary nodules with interstitial changes]. Zhonghua Jie He He Hu Xi Za Zhi 2022; 45:783-789. [PMID: 35927049 DOI: 10.3760/cma.j.cn112147-20220124-00069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
A 53-year-old female patient with pulmonary nodules for more than 3 years was admitted to Beijing Chao-Yang Hospital because of cough and sputum with shortness of breath after exercise for 4 months. In the first two and a half years, her pulmonary nodules remained stable, after that the nodules increased obviously with interstitial changes. After admission, a venous thromboembolic (VTE) event was quickly detected with a marked increase in D-dimer. Then, based on the clues of VTE examination, bronchoscopy, gastroscope, positron emission tomography-CT, head magnetic resonance and other examinations were performed. The final pathological diagnosis was lung adenocarcinoma, mainly solid with mucus secretion, with mediastinal hilar lymph node metastasis, intrapulmonary metastasis and gastric metastasis. Gene detection of lung and stomach histopathological tissues showed positive EML4-ALK fusion gene. The patient received therapies with crizotinib, alectinib in sequence and anticoagulation. After 20-month treatment, a telephone follow-up showed that there was no significant limitation in her daily activities.
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Affiliation(s)
- S Q Yang
- Department of Pulmonary and Critical Care Medicine, Beijing Chao-Yang Hospital, Capital Medical University, Beijing Institute of Respiratory Medicine, Beijing 100020, China
| | - M Hao
- Department of Pulmonary and Critical Care Medicine, Beijing Chao-Yang Hospital, Capital Medical University, Beijing Institute of Respiratory Medicine, Beijing 100020, China
| | - Y L Gao
- Department of Radiology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China
| | - Y H Zhang
- Department of Pulmonary and Critical Care Medicine, Beijing Chao-Yang Hospital, Capital Medical University, Beijing Institute of Respiratory Medicine, Beijing 100020, China
| | - M F Yang
- Department of Nuclear Medicine, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China
| | - M L Jin
- Department of Pathology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China
| | - Qiuhong Fang
- Department of Pulmonary and Critical Care Medicine, Beijing Chao-Yang Hospital, Capital Medical University, Beijing Institute of Respiratory Medicine, Beijing 100020, China
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Yan C, Yang MF. In Reply to the Letter to the Editor Regarding "A Reliable Nomogram Model to Predict the Recurrence of Chronic Subdural Hematoma After Burr Hole Surgery". World Neurosurg 2022; 163:145. [PMID: 35729810 DOI: 10.1016/j.wneu.2022.04.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 04/05/2022] [Indexed: 10/18/2022]
Affiliation(s)
- Chao Yan
- Department of Neurosurgery, Lishui People's Hospital, Lishui, Zhejiang, China
| | - Ming-Fei Yang
- Department of Neurosurgery, Qinghai Provincial People's Hospital, Xining, Qinghai, China.
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Bao QJ, Zhao K, Guo Y, Wu XT, Yang JC, Yang MF. Environmental toxic metal contaminants and risk of stroke: a systematic review and meta-analysis. Environ Sci Pollut Res Int 2022; 29:32545-32565. [PMID: 35190994 DOI: 10.1007/s11356-022-18866-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Accepted: 01/21/2022] [Indexed: 06/14/2023]
Abstract
The relationship between toxic metals in the environment and clinical stroke risk remains unclear, although their role as immunotoxicants and carcinogens has been well established. We conducted a systematic review of the relationship between five metals (arsenic, mercury, copper, cadmium, and lead) and stroke. First, we comprehensively searched 3 databases (Pubmed, EMBASE, and Cochrane) from inception until June 2021. Random-effects meta-analyses, pooled relative risks (RR) and 95% confidence intervals (CI) were applied to evaluate the effect value. We finally identified 38 studies involving 642,014 non-overlapping participants. Comparing the highest vs. lowest baseline levels, chronic exposure to lead (RR = 1.07; 95%CI,1.00-1.14), cadmium (RR = 1.30; 95%CI,1.13-1.48), and copper (RR = 1.19; 95%CI,1.04-1.36) were significantly associated with stroke risks. However, the other two metals (arsenic and mercury) had less effect on stroke risk. Further analysis indicated that the association was likely in a metal dose-dependent manner. The results may further support the possibility that environmental toxic metal contaminants in recent years are associated with the increased risk of stroke.
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Affiliation(s)
- Qiang-Ji Bao
- Graduate School, Qinghai University, Xining, 810016, Qinghai, China
| | - Kai Zhao
- Graduate School, Qinghai University, Xining, 810016, Qinghai, China
| | - Yu Guo
- Graduate School, Qinghai University, Xining, 810016, Qinghai, China
| | - Xin-Ting Wu
- Graduate School, Qinghai University, Xining, 810016, Qinghai, China
| | - Jin-Cai Yang
- Graduate School, Qinghai University, Xining, 810016, Qinghai, China
| | - Ming-Fei Yang
- Department of Neurosurgery, Qinghai Provincial People's Hospital, Xining, 810007, Qinghai, China.
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Guo Y, Guo XM, Li RL, Zhao K, Bao QJ, Yang JC, Zhang Q, Yang MF. Tranexamic Acid for Acute Spontaneous Intracerebral Hemorrhage: A Meta-Analysis of Randomized Controlled Trials. Front Neurol 2022; 12:761185. [PMID: 34987465 PMCID: PMC8720763 DOI: 10.3389/fneur.2021.761185] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Accepted: 11/25/2021] [Indexed: 11/13/2022] Open
Abstract
Background: The role of tranexamic acid (TXA) in preventing hematoma expansion (HE) in patients with acute spontaneous intracerebral hemorrhage (ICH) remains unclear. We aim to investigate the efficacy and safety of TXA in acute spontaneous ICH with a particular focus on subgroups. Methods: Randomized controlled trials (RCTs) were retrieved from CENTRAL, Clinicaltrials.gov, EMBASE, PubMed, and WHO ICTRP. The primary outcome measurement was HE. The secondary outcome measurements included 3-month poor functional outcome (PFO), 3-month mortality, and major thromboembolic events (MTE). We conducted subgroup analysis according to the CT markers of HE (standard-risk population and high-risk population) and the time from onset to randomization (>4.5 and ≤4.5 h). Results: We identified seven studies (representing five RCTs) involving 2,650 participants. Compared with placebo, TXA may reduce HE on subsequent imaging (odd ratio [OR] 0.825; 95% confidence interval [CI] 0.692–0.984; p = 0.033; I2 = 0%; GRADE: moderate certainty). TXA and placebo arms did not differ in the rates of 3-month PFO, 3-month mortality, and MTE. Subgroup analysis indicated that TXA reduced the risk of HE in the high-risk population with CT markers of HE (OR 0.646; 95% CI 0.503–0.829; p = 0.001; I2 = 0 %) and in patients who were treated within 4.5 h of symptom onset (OR 0.823; 95% CI 0.690–0.980; p = 0.029; I2 = 0%), but this protective effect was not observed in the standard-risk population and patients who were treated over 4.5 h of symptom onset. Conclusions: Tranexamic acid (TXA) may decrease the risk of HE in patients with acute spontaneous ICH. Importantly, the decreased risk was observed in patients who were treatable within 4.5 h and with a high risk of HE, but not in those who were treatable over 4.5 h and in standard-risk population. However, PFO or mortality at 3 months did not significantly differ between patients who received TXA and those who received placebo. TXA is safe for acute spontaneous ICH without increasing MTE.
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Affiliation(s)
- Yu Guo
- Graduate School, Qinghai University, Xining, China
| | - Xin-Mei Guo
- Biomedical Engineering Research Center, Kunming Medical University, Kunming, China
| | - Rui-Li Li
- Neurological Intensive Care Department, Shengli Oilfield Central Hospital, Dongying, China
| | - Kai Zhao
- Graduate School, Qinghai University, Xining, China
| | - Qiang-Ji Bao
- Graduate School, Qinghai University, Xining, China
| | - Jin-Cai Yang
- Graduate School, Qinghai University, Xining, China
| | - Qiang Zhang
- Department of Neurosurgery, Qinghai Provincial People's Hospital, Xining, China
| | - Ming-Fei Yang
- Department of Neurosurgery, Qinghai Provincial People's Hospital, Xining, China
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12
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Zhao K, Guo Y, Yang MF, Zhang Q. Efficacy and safety of fingolimod in stroke: A systemic review and meta-analysis. World J Meta-Anal 2021. [DOI: 10.13105/wjma.v9.i6.586] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
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13
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Zhao K, Guo Y, Yang MF, Zhang Q. Efficacy and safety of fingolimod in stroke: A systemic review and meta-analysis. World J Meta-Anal 2021; 9:585-597. [DOI: 10.13105/wjma.v9.i6.585] [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] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 11/13/2021] [Accepted: 12/24/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Brain tissue injury in stroke patients involves inflammation around the infarction lesion or hematoma, which is an important reason for disease deterioration and can result in a poor prognosis. The meta-analysis of animal experiments has concluded that fingolimod could treat stroke in animal models by effectively reducing lymphocyte infiltration. However, no evidence-based efficacy and safety evaluation of fingolimod in stroke patients is currently available.
AIM To determine whether fingolimod could promote reduction of infarction lesion or hematoma and improve neurological prognosis in stroke patients.
METHODS Data extracted for treatment effect included count of T-lymphocytes with cluster of differentiation 8 expression (CD8+ T cells, × 106/mL), lesion volume (infarction or hematoma, mL), and modified Barthel indexes. Data extracted for safety was risk ratio (RR). Overall standard mean difference (SMD) with its 95% confidence interval (95%CI) and pooled effect with its 95%CI were calculated with a fixed-effects model. I-square (I2) was used to test the heterogeneity. Funnel plot symmetry and Egger's regression were used to evaluate publication bias.
RESULTS Four high-quality randomized controlled trials were included. There was a significant difference in CD8+ T cell count (I2 = 0, overall SMD = -3.59, 95%CI: -4.37-2.80, P = 0.737) and modified Barthel index (I2 = 0, overall SMD = 2.42, 95%CI: 1.63-3.21, P = 0.290) between the fingolimod and control groups. However, there was no significant difference in lesion volume (I2 = 10.6%, overall SMD = -0.17, 95%CI: -0.75-0.42, P = 0.917), fever (pooled RR = 0.93, 95%CI: 0.97-2.32, P = 0.864), suspected lung infection (pooled RR = 0.90, 95%CI: 0.33-2.43, P = 0.876), or any adverse events occurring at least once (pooled RR = 0.82, 95%CI: 0.36-1.87, P = 0.995) between the fingolimod and control groups. There was no publication bias. All of the results were stable as revealed by sensitivity analysis.
CONCLUSION Fingolimod improves neurological function in stroke patients without promotion of lesion absorption. Taking fingolimod orally (0.5 mg/d, 3 consecutive days) is safe except for patients with rare severe adverse events.
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Affiliation(s)
- Kai Zhao
- Graduate School, Qinghai University, Xining 810016, Qinghai Province, China
| | - Yu Guo
- Graduate School, Qinghai University, Xining 810016, Qinghai Province, China
| | - Ming-Fei Yang
- Department of Neurosurgery, Qinghai Provincial People's Hospital, Xining 810007, Qinghai Province, China
| | - Qiang Zhang
- Department of Neurosurgery, Qinghai Provincial People's Hospital, Xining 810007, Qinghai Province, China
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14
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Guo Y, Guo XM, Zhao K, Yang MF. Aspirin and growth, rupture of unruptured intracranial aneurysms: A systematic review and meta-analysis. Clin Neurol Neurosurg 2021; 209:106949. [PMID: 34562772 DOI: 10.1016/j.clineuro.2021.106949] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 09/10/2021] [Accepted: 09/13/2021] [Indexed: 11/29/2022]
Abstract
OBJECTIVES Aspirin has been suggested as a potential therapeutic strategy to prevent the growth and rupture of unruptured intracranial aneurysms (UIAs), but there is still controversy. The aim of this systematic review and meta-analysis is to determine the association between aspirin use and growth, rupture of UIAs. METHODS We performed a systematic literature search of electronic databases to identify cohort and case-control studies investigating the relationship between aspirin use and growth or rupture of UIAs. Pooled odds ratio (OR) with corresponding 95% confidence interval (CI) were calculated using a random effects model. Heterogeneity among studies was quantified using the I2 statistic, and potential publication bias was assessed using funnel plots. Sensitivity analysis was performed to verify the robustness of the intention-to-treat results. Subgroup analysis was conducted according to the frequency of aspirin use. RESULTS We identified 8 studies comprising 10,518 participants. The risk of bias was low to moderate. The pooled estimate showed that aspirin use was associated with a lower likelihood of growth of UIAs (OR = 0.25, 95% CI = 0.11-0.55; p = 0.0005) without statistical heterogeneity (p for Cochran Q statistic = 0.62, I2 = 0%). Likewise, aspirin intake also significant decreased 58% risk of intracranial aneurysms rupture (OR = 0.42, 95% CI = 0.29-0.60; p < 0.00001) with moderate heterogeneity (p for Cochran Q statistic = 0.005, I2 = 66%). Similar results were observed in the sensitivity analysis. Pooled OR of aspirin frequency subgroup analysis for less than or equal to 2 times per week was 0.82 (95%CI = 0.40-1.72; I2 = 0%), for at least 3 times per week to daily was 0.25 (95%CI = 0.12-053; I2 = 0%), for daily was 0.59 (95%CI: 0.47-0.74; I2 = 0%), and for unknown was 0.26 (95%CI: 0.15-0.45; I2 = 51%). CONCLUSIONS The results of this systematic review and meta-analysis indicates a beneficial effect of aspirin on growth and rupture of UIAs.
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Affiliation(s)
- Yu Guo
- Graduate School, Qinghai University, Xining, Qinghai, China
| | - Xin-Mei Guo
- Biomedical Engineering Research Center, Kunming Medical University, Kunming, Yunnan, China
| | - Kai Zhao
- Graduate School, Qinghai University, Xining, Qinghai, China
| | - Ming-Fei Yang
- Department of Neurosurgery, Qinghai Provincial People's Hospital, Xining, Qinghai, China.
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15
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Xu FL, Jiang YJ, Yang MF, Da W, Yang XW, Shi TY. Three first records of stick insects attacking plants (Inseect: Phasmida) in Tibet. BRAZ J BIOL 2021; 83:e245862. [PMID: 34495148 DOI: 10.1590/1519-6984.245862] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Accepted: 05/31/2021] [Indexed: 11/21/2022] Open
Abstract
Except for a few stick insects that are economically valuable, most species be considered to be forest pests, so it is extremely important to obtain plant host-use information of more stick insects. In this paper, the plant hosts of three species of stick insects were recorded for the first time. We also discovered these stick insects can feed upon the flowers or leaves of plants. Lopaphus unidentatus (Chen & He, 1995) (Phasmida: Lonchodidae) attacked Hypericum choisianum Wall. ex N. Robson, 1973 (Hypericaceae), Leurophasma dolichocercum Bi, 1995 (Phasmida: Aschiphasmatidae) attacked Antenoron filiforme (Thunb.) Roberty & Vautier, 1964 (Polygonaceae) and Megalophasma granulatum Bi, 1995 (Phasmida: Lonchodidae) attacked Debregeasia orientalis C. J. Chen, 1991 (Urticaceae). Finally, we were lucky enough to also obtain photographs of them mating and feeding.
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Affiliation(s)
- F L Xu
- Institute of Entomology, Guizhou University, Guiyang, Guizhou, P.R. China.,College of Forestry, Guizhou University, Guiyang, Guizhou, P.R. China.,Research Center for Biodiversity and Natural Conservation, Guizhou University, Guiyang, Guizhou, P.R. China
| | - Y J Jiang
- College of Forestry, Guizhou University, Guiyang, Guizhou, P.R. China.,Research Center for Biodiversity and Natural Conservation, Guizhou University, Guiyang, Guizhou, P.R. China
| | - M F Yang
- Institute of Entomology, Guizhou University, Guiyang, Guizhou, P.R. China
| | - W Da
- Tibet Plateau Institute of Biology, Lhasa, Xizang Autonomous Prefecture, P.R. China
| | - X W Yang
- College of Forestry, Guizhou University, Guiyang, Guizhou, P.R. China
| | - T Y Shi
- College of Forestry, Guizhou University, Guiyang, Guizhou, P.R. China
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16
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Sun YX, Wang M, Yang MF, Zhan SY. [Review on tree-based scan statistic in drug and vaccine safety monitoring]. Zhonghua Liu Xing Bing Xue Za Zhi 2021; 42:1286-1291. [PMID: 34814545 DOI: 10.3760/cma.j.cn112338-20201103-01297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
To summarize the development and application of tree-based scan statistic (TreeScan), explain the methodology and provide a reference for future use of this method by reviewing the original pharmacoepidemiological and vaccine studies using the TreeScan. Medline, Embase and Web of Science databases were used for the retrieval of eligible studies using keywords related to TreeScan. A total of 15 eligible studies were included, in which 9 studies explored the adverse events of drugs and 6 studies focused on the safety of vaccines. Three types of models (Poisson probability model, Bernoulli probability model and tree-temporal scan statistic model) of TreeScan were used. The major differences among the three models were 1) whether predefined control was used according to research question, 2) whether the time from exposure to onset of adverse events was considered. Several studies explored its ability by comparing with other methods for adverse event detection or by using known adverse events. This review shows that TreeScan is an effective method for the safety signal detection of drugs or vaccines, which develops rapidly and globally. It is very necessary to promote its use in drug safety monitoring and other related fields in China.
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Affiliation(s)
- Y X Sun
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
| | - M Wang
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China Department of Epidemiology, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing 100029, China
| | - M F Yang
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
| | - S Y Zhan
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
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17
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Li JM, Yang MF, He ZX. [Application value of radionuclide myocardial blood flow quantitative imaging in evaluating coronary microvascular dysfunction]. Zhonghua Xin Xue Guan Bing Za Zhi 2020; 48:1073-1077. [PMID: 33355753 DOI: 10.3760/cma.j.cn112148-20200426-00349] [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: 06/12/2023]
Affiliation(s)
- J M Li
- Department of Nuclear Medicine, TEDA International Cardiovascular Hospital, Tianjin 300457, China
| | - M F Yang
- Department of Nuclear Medicine, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - Z X He
- Department of Nuclear Medicine, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing 102218, China
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18
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Wu JY, Wang L, Yang MF. [Incidence and etiological analysis of abnormal cardiac uptake in patients underwent oncologic PET/CT imaging]. Zhonghua Xin Xue Guan Bing Za Zhi 2020; 48:936-941. [PMID: 33210865 DOI: 10.3760/cma.j.cn112148-20191209-00742] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the incidence, location and etiology of abnormal cardiac uptake in patients underwent oncologic 18F-fluorodeoxyglucose positron emission tomography/computed tomography(PET/CT) imaging. Methods: The 18F-FDG PET/CT images of 2000 consecutive patients with suspected or diagnosed malignancy in Beijing Chaoyang Hospital from January 2014 to September 2016 were retrospectively analyzed. Fasting time was more than 12 hours before imaging, and fasting blood glucose level before 18F-FDG injection was less than 6.7 mmol/L. Focal uptake in the non-basal and non-papillary regions of the left ventricle, uptake in the right ventricle exceeding uptake in the left ventricle, and uptake in the atrium higher than that of the blood pool (when uptake of left ventricle was zero or low) were defined as abnormal, and all abnormal uptake was visually determined by experienced nuclear medicine physicians. General clinical data and the results of cardiac examination were collected to explore the incidence, location and etiology of cardiac diseases. Results: There were 138 patients with history of diabetes (6.90%), 228 patients with history of cardiovascular disease (11.40%) out of the 2 000 patients ((60.5±13.2) years, 1 117 male (55.85%)). The number and proportion of patients with malignancy, benign lesions, diseases of unknown etiology were 939 (46.95%), 484 (24.20%), 557 (28.85%), respectively. Abnormal cardiac uptake was detected in 145 patients (7.3%). The proportion of abnormal uptake in left ventricle, right ventricle and atrium was 52.4% (76 cases), 12.4% (18 cases), 35.2% (51 cases), respectively. Of the 76 individuals who had abnormal uptake in left ventricle, 25 cases (32.9%) were caused by coronary artery disease, and other causes included hypertrophic cardiomyopathy and myocardial damage caused by chemotherapy drugs, etc. Of the 18 cases who had abnormal uptake in right ventricle, 14 cases (14/18) were caused by pulmonary hypertension. In addition, 20 out of the 51 cases (39.3%) with abnormal uptake in atrium suffered from atrial fibrillation. Seventy-one patients with abnormal cardiac uptake (49.0%) had no clear manifestation and evidence of heart disease before imaging. Conclusions: The abnormal 18F-FDG uptake on oncologic PET/CT is not rare. The most common site of abnormal uptake is left ventricle, coronary artery disease, pulmonary hypertension and atrial fibrillation are common causes of abnormal 18F-FDG uptake.
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Affiliation(s)
- J Y Wu
- Department of Nuclear Medicine, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - L Wang
- National Cancer Center, National Clinical Research Center for Cancer, Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - M F Yang
- Department of Nuclear Medicine, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
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19
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Du CN, Liu BX, Ma QF, Yang MF. The effect of tranexamic acid in patients with TBI: a systematic review and meta-analysis of randomized controlled trials. Chin Neurosurg J 2020; 6:14. [PMID: 32922943 PMCID: PMC7398208 DOI: 10.1186/s41016-020-00196-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 01/21/2020] [Accepted: 04/15/2020] [Indexed: 01/26/2023] Open
Abstract
To conduct a systematic review and meta-analysis and evaluate the effect of tranexamic acid in patients with traumatic brain injury. PubMed, EMBASE, and CENTRAL (Cochrane Central Register of Controlled Trials) were searched to identify randomized controlled trials and evaluate the effect of tranexamic acid in traumatic brain injury patients. The primary outcome was mortality. Two reviewers extracted the data independently. The random effect meta-analysis was used to estimate the aggregate effect size of 95% confidence intervals. Six randomized controlled trials investigating tranexamic acid versus placebo and 30073 patients were included. Compared with placebo, tranexamic acid decreased the mortality (RR = 0.92; 95% CI, 0.87-0.96; p < 0.001) and growth of hemorrhagic mass (RR = 0.78; 95% CI, 0.61-0.99; p = 0.04). However, tranexamic acid could not decrease disability or independent, neurosurgery, vascular embolism, and stroke. Current evidence suggested that compared with placebo, tranexamic acid could reduce mortality and growth of hemorrhagic mass. This finding indicated that patients with traumatic brain injury should be treated with tranexamic acid.
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Affiliation(s)
- Chao-Nan Du
- Graduate School, Qinghai University, Xining, Qinghai China
| | - Bo-Xue Liu
- Graduate School, Qinghai University, Xining, Qinghai China
| | - Qing-Fang Ma
- Department of Neurosurgery, Xuzhou Central Hospital, Xuzhou, Jiangsu China
| | - Ming-Fei Yang
- Department of Neurosurgery, Qinghai Provincial People's Hospital, Xining, Qinghai China
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20
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He XW, Chen MD, Du CN, Zhao K, Yang MF, Ma QF. A novel model for predicting the outcome of intracerebral hemorrhage: Based on 1186 Patients. J Stroke Cerebrovasc Dis 2020; 29:104867. [PMID: 32689632 DOI: 10.1016/j.jstrokecerebrovasdis.2020.104867] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 03/25/2020] [Accepted: 04/04/2020] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVE To establish a model for predicting the outcome according to the clinical and computed tomography(CT) image data of patients with intracerebral hemorrhage(ICH). METHODS The clinical and CT image data of the patients with ICH in Qinghai Provincial People's Hospital and Xuzhou Central Hospital were collected. The risk factors related to the poor outcome of the patients were determined by univariate and multivariate logistic regression analysis. To determine the effect of factors related to poor outcome, the nomogram model was made by software of R 3.5.2 and the support vector machine operation was completed by software of SPSS Modelor. RESULTS A total of 8265 patients were collected and 1186 patients met the criteria of the study. Age, hospitalization days, blend sign, intraventricular extension, subarachnoid hemorrhage, midline shift, diabetes and baseline hematoma volume were independent predictors of poor outcome. Among these factors, baseline hematoma volume20ml (odds ratio:13.706, 95% confidence interval:9.070-20.709, p < 0.001) was the most significant factor for poor outcome, followed by the volume among 10ml-20ml (odds ratio:11.834, 95% confidence interval:7.909-17.707, p < 0.001). It was concluded that the highest percentage of weight in outcome was baseline hematoma volume (25.0%), followed by intraventricular hemorrhage (23.0%). CONCLUSION This predictive model might accurately predict the outcome of patients with ICH. It might have a wide range of application prospects in clinical.
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Affiliation(s)
- Xi-Wu He
- Department of Neurosurgery, Qinghai Provincial People's Hospital, Xining, Qinghai, 810007, China
| | - Ming-di Chen
- Department of Intensive Care Unit, Jingjiang People's Hospital, the Seventh Affiliated Hospital of Yangzhou University, Jingjiang, Jiangsu, 214500, China
| | - Chao-Nan Du
- Graduate School, Qinghai University, Xining, Qinghai, 810016, China
| | - Kai Zhao
- Graduate School, Qinghai University, Xining, Qinghai, 810016, China
| | - Ming-Fei Yang
- Department of Neurosurgery, Qinghai Provincial People's Hospital, Xining, Qinghai, 810007, China
| | - Qing-Fang Ma
- Department of Neurosurgery, Xuzhou Central Hospital, Xuzhou, Jiangsu, 221009, China.
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21
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Yang MF. [Advancing the clinical application of (18)F-fluorodeoxyglucose positron emission tomography/computed tomography in cardiovascular inflammation]. Zhonghua Xin Xue Guan Bing Za Zhi 2020; 48:181-185. [PMID: 32234173 DOI: 10.3760/cma.j.cn112148-20200120-00035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- M F Yang
- Department of Nuclear Medicine, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
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22
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Wu P, Guo XS, Zhang X, Wu ZF, Wang RN, Li L, Liang M, Wang HL, Yan M, Qin ZX, Cheng PL, Jin CR, Yang MF, Wang YT, Li SJ. [Value of absolute quantification of myocardial perfusion by PET in detecting coronary microvascular disease in patients with non-obstructive coronaries]. Zhonghua Xin Xue Guan Bing Za Zhi 2020; 48:205-210. [PMID: 32234177 DOI: 10.3760/cma.j.cn112148-20191024-00652] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To compare the incidence of coronary microvascular disease (CMVD) between patients with non-obstructive and obstructive coronary arteries. Methods: We retrospectively analyzed 97 patients with angina pectoris, who underwent the absolute quantitative PET examination of myocardial perfusion and coronary anatomy examination within 90 days. All patients were divided into two groups: non-obstructive group (72 cases, no stenosis ≥50% in all three coronary arteries) and obstructive group (25 cases, at least one coronary stenosis ≥50%; and at least one coronary stenosis<50%). Quantitative parameters derived from PET including rest myocardial blood flow (RMBF), stress myocardial blood flow (SMBF), coronary flow reserve (CFR) and cardiovascular risk factors were compared between the two groups. CMVD was defined as CFR<2.90 and SMBF<2.17 ml·min(-1)·g(-1). Results: Incidence of CMVD was significant higher in the non-obstructive coronary arteries of the obstructive group than in the non-obstructive coronary arteries of non-obstructive group (47.1% (16/34) vs. 25.5% (55/216), χ(2)=6.738, P=0.009) while incidence of CMVD was similar between non-obstructive and obstructive patients ((44% (11/25) vs. 33.3% (24/72), χ(2)=0.915, P=0.339). RMBF ((0.83±0.14) ml·min(-1)·g(-1) vs. (0.82±0.17) ml·min(-1)·g(-1)), SMBF ((2.13±0.60) ml·min(-1)·g(-1) vs. (1.91±0.50) ml·min(-1)·g(-1)) and CFR (2.59±0.66 vs. 2.36±0.47) were similar between the two groups (all P>0.05). Conclusions: CMVD can occur in non-obstructive coronary arteries in both patients with non-occlusive coronary arteries and patients with obstructive coronary arteries. Prevalence of CMVD is significantly higher in patients with obstructive coronary arteries than in patients with non-obstructive coronary arteries. The CMVD severity is similar between the two groups.
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Affiliation(s)
- P Wu
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, Shanxi Key Laboratory of Molecular Imaging, Taiyuan 030001, China
| | - X S Guo
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, Shanxi Key Laboratory of Molecular Imaging, Taiyuan 030001, China
| | - X Zhang
- Province-Ministry Co-construction Collaborative Innovation Center for Molecular Imaging of Precision Medicine, Taiyuan 030001, China
| | - Z F Wu
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, Shanxi Key Laboratory of Molecular Imaging, Taiyuan 030001, China
| | - R N Wang
- Province-Ministry Co-construction Collaborative Innovation Center for Molecular Imaging of Precision Medicine, Taiyuan 030001, China
| | - L Li
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, Shanxi Key Laboratory of Molecular Imaging, Taiyuan 030001, China
| | - M Liang
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, Shanxi Key Laboratory of Molecular Imaging, Taiyuan 030001, China
| | - H L Wang
- Province-Ministry Co-construction Collaborative Innovation Center for Molecular Imaging of Precision Medicine, Taiyuan 030001, China
| | - M Yan
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, Shanxi Key Laboratory of Molecular Imaging, Taiyuan 030001, China
| | - Z X Qin
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, Shanxi Key Laboratory of Molecular Imaging, Taiyuan 030001, China
| | - P L Cheng
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, Shanxi Key Laboratory of Molecular Imaging, Taiyuan 030001, China
| | - C R Jin
- Department of cardiology, First Hospital of Shanxi Medical University, Taiyuan 030001, China
| | - M F Yang
- Department of Nuclear Medicine, Beijing Chaoyang hospital, Capital Medical University, Beijing 100043, China
| | - Y T Wang
- Department of Nuclear Medicine, Third Affiliated Hospital of Soochow University (First People's Hospital of Changzhou), Changzhou 213003, China
| | - S J Li
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, Shanxi Key Laboratory of Molecular Imaging, Taiyuan 030001, China
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Luo YX, Du CN, Yang MF, Zhang Q, Wei XX. [Alveolar echinococcosis metastatic to the brain: a case report]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2020; 32:548-550. [PMID: 33185073 DOI: 10.16250/j.32.1374.2019167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
This paper reports a case with alveolar echinococcosis metastatic to the brain. This case underwent 10-year antiechinococcosis treatment and operations of the liver, right kidney and brain. Following multiple operations and oral administration of albendazole, the case still had recurrence and distant metastasis of hepatic echinococcosis. It is suggested that early prevention, early diagnosis, early regular treatment and surgical radical treatment are critical to the treatment of alveolar echinococcosis.
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Affiliation(s)
- Y X Luo
- Graduate School of Qinghai University, Xining 810016, China
| | - C N Du
- Graduate School of Qinghai University, Xining 810016, China
| | - M F Yang
- Department of Neurosurgery, Qinghai Provincial People's Hospital, China
| | - Q Zhang
- Department of Neurosurgery, Qinghai Provincial People's Hospital, China
| | - X X Wei
- Department of Basic Medical Science, Medical School of Qinghai University, China
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Du CN, Sun YQ, Zheng F, Yang MF. [Primary cystic echinococcosis in the left femur: a case report]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2019; 32:110-112. [PMID: 32185941 DOI: 10.16250/j.32.1374.2019243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
This article reported a case with primary cystic echinococcosis in the left femur.
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Affiliation(s)
- C N Du
- Graduate School of Qinghai University, Xining 810016, China
| | - Y Q Sun
- CT Department, Imaging Center, Qinghai Provincial People's Hospital, China
| | - F Zheng
- Department of Orthopedics, Qinghai Provincial People's Hospital, China
| | - M F Yang
- Department of Neurosurgery, Qing-hai Provincial People's Hospital, China
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25
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Chen L, Zhao YX, Yang MF, Zhang DW, Shu XW, Liu C. Cross-coupling drift between magnetic field and temperature in depolarized interferometric fiber optic gyroscope. Opt Express 2019; 27:6003-6011. [PMID: 30876194 DOI: 10.1364/oe.27.006003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Accepted: 01/22/2019] [Indexed: 06/09/2023]
Abstract
We propose a theory of cross-coupling drift in depolarized interferometric fiber optic gyroscopes (D-IFOGs) under the joint influence of magnetic field and temperature. The magnetic field and temperature cross-coupling drift (MTCD) originates from the interaction of the nonreciprocal circular birefringence produced by the magnetic field, the thermal stress birefringence from the varying temperature, and the inherent residual birefringence in the fiber coil. The MTCD is much greater than the sum of the individual drifts induced by magnetic field and temperature. We established a relevant theoretical model and carried out numerical simulations, and verified the results experimentally. For a typical D-IFOG, the experimental results showed a cross-coupling degree exceeding 170% when the temperature varied from -20 °C to 60 °C, as predicted in the simulations.
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Du CN, Yang MF, Zhang Q, Jin XQ, Yan C, Huang YW. Establishment and Verification of the Hematoma Expansion Prediction Score of Intracerebral Hemorrhage in the Qinghai-Tibetan Plateau. World Neurosurg 2019; 123:e465-e473. [DOI: 10.1016/j.wneu.2018.11.189] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Revised: 11/19/2018] [Accepted: 11/20/2018] [Indexed: 11/26/2022]
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Yang PP, Yang YH, Kuang TG, Yang MF, Wang JF, Huang Q, Yang SQ, Li JF, Diao XL, Zhang KN, Gong JN. [Pulmonary cavities with Takayasu arteritis: report of 3 cases and literature review]. Zhonghua Jie He He Hu Xi Za Zhi 2019; 41:787-792. [PMID: 30347551 DOI: 10.3760/cma.j.issn.1001-0939.2018.10.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To analyze the clinical features of 3 cases of Takayasu arteritis(TA) with pulmonary cavities on chest computed tomography(CT). Methods: The clinical data of 3 TA patients with cavities on the chest CT who were admitted into Beijing Chaoyang Hospital were retrospectively analyzed. A literature search was performed with "Takayasu arteritis" and "pulmonary" as the key words in China Knowledge Resource Intergrated Database (CNKI) and Pubmed Database for publications from Jan 1, 2000 to Dec. 31,2017. The relevant literatures were reviewed. Results: Among the 3 patients, 2 were males and 1 was female, aging 49, 28 and 28 years, respectively. They presented with cough, fever and chest pain, and chest CT showed cavities, single or multiple, either with thick or thin wall, or wedge-shaped consolidation, residual stripes after being absorbed, and one case had pulmonary biopsy results which showed hemorrhagic infarction. They were all misdiagnosed before as pneumonia, pulmonary tuberculosis, pulmonary thromboembolism. After being treated by combination therapy of glucocorticoids and immunosuppressive agents, the disease improved significantly. A total of 777 cases with TA involving pulmonary arteries were reported, from which 13 cases with involvement of pulmonary parenchyma were described. Therefore total 16 cases including the 3 cases in this article were included for analysis. Twelve cases showed patchy or wedge-shaped ground-glass opacity and consolidation, and peripheral lung stripes remained after being absorbed. Two cases showed pleural effusion, and 4 cases showed cavities, 3 cases were misdiagnosed as pulmonary tuberculosis, 7 as pulmonary infection, and 5 as pulmonary thromboembolism. Conclusions: TA with pulmonary arteries involved is susceptible to be misdiagnosed and missed, and therefore, in patients with cough, hemoptysis, chest pain and cavities in pulmonary parenchyma, TA should be suspected. Early diagnosis and appropriate treatment can lead to a better prognosis.
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Affiliation(s)
- P P Yang
- Department of Respiratory and Critical Care Medicine, Beijing Chaoyang Hospital, Capital Medical University, Beijing Institute of Respiratory Medicine, Beijing 100020, China
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Jin XQ, Du XF, Yang MF, Zhang Q. Development and Validation of Prognostic Model for Patients with Acute Subdural Hematoma-Reliable Nomogram. World Neurosurg 2018; 124:S1878-8750(18)32904-8. [PMID: 30593962 DOI: 10.1016/j.wneu.2018.12.081] [Citation(s) in RCA: 6] [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: 10/21/2018] [Revised: 12/07/2018] [Accepted: 12/10/2018] [Indexed: 11/20/2022]
Abstract
OBJECTIVE By extracting clinical and computed tomography imaging data of patients with acute subdural hematoma (ASDH), factors that were significantly associated with poor prognosis were screened and a nomogram model was established and validated. METHODS All patients with ASDH who underwent subdural hematoma removal and decompressive craniectomy from January 2014 to March 2018 in Qinghai Provincial People's Hospital were continuously collected. Finally, 124 patients were included in the study. According to the Glasgow Outcome Scale at 3 months after operation, patients were divided into a good prognosis group and a poor prognosis group. RESULTS Univariate and binary logistic regression analysis were performed to screen out independent predictors that were significantly associated with poor prognosis of ASDH. On the basis of these factors, a nomogram model was established. CONCLUSIONS The nomogram model had high accuracy for predicting poor prognosis in patients with ASDH, and it was easy to promote. In the future, large sample and multicenter prospective studies are necessary to complement and identify the results.
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Affiliation(s)
- Xiao-Qing Jin
- Department of Graduate School, Qinghai University, Xining, Qinghai, China
| | - Xiao-Feng Du
- Department of Nursing, Qinghai Institute of Health Sciences, Xining, Qinghai, China
| | - Ming-Fei Yang
- Department of Neurosurgery, Qinghai Provincial People's Hospital, Xining, Qinghai, China.
| | - Qiang Zhang
- Department of Neurosurgery, Qinghai Provincial People's Hospital, Xining, Qinghai, China
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Huang YW, Yang MF. Combining Investigation of Imaging Markers (Island Sign and Blend Sign) and Clinical Factors in Predicting Hematoma Expansion of Intracerebral Hemorrhage in the Basal Ganglia. World Neurosurg 2018; 120:e1000-e1010. [PMID: 30201578 DOI: 10.1016/j.wneu.2018.08.214] [Citation(s) in RCA: 10] [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] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 08/27/2018] [Accepted: 08/29/2018] [Indexed: 12/21/2022]
Abstract
BACKGROUND AND OBJECTIVE Intracerebral hemorrhage (ICH) is the most difficult-to-treat form of stroke and accounts for about 10%-30% of all strokes worldwide. Hematoma expansion (HE), which occurs in one third of patients with ICH, is strongly predictive of worse prognosis and potentially preventable if high-risk patients are identified in the early phase of ICH. We summarized data from recent studies on HE prediction and classified those potential indicators into 2 categories: 1) clinical and laboratory and 2) radiographic. Therefore, we aimed to identify the accuracy of L, that is, the value of combining predictors in predicting HE of ICH in basal ganglia. METHODS We retrospectively investigated the clinical database of Qinghai Provincial People's Hospital for patients with ICH aged >18 years between January 2015 and January 2018. As inclusion criteria, we defined 1) ICH diagnosed on noncontrast computed tomography (CT); 2) noncontrast CT performed on enrollment within 6 hours after onset of symptoms; 3) follow-up CT scan performed within 24 hours after the baseline CT scan; and 4) all of the primary hematoma was located in the basal ganglia. Univariate and multivariate logistic regression analysis were used to analyze the potential HE predictors, and then receiver operating characteristic curves were used to evaluate the L (the value of combining predictors) of imaging markers and clinical factors in predicting HE. RESULTS Of the 99 patients with HE, island sign was present in 48.48% (48/99) of patients and blend sign was present in 34.34% (34/99) of patients. Multivariate logistic regression analysis identified time to baseline CT scan (odds ratio [OR] 1.574; 95% confidence interval [CI] 1.205-2.054; P = 0.001), baseline hematoma volume (P = 0.001), presence of island sign (OR 11.247; 95% CI 4.701-26.909; P = 0.000), presence of blend sign (OR 3.104; 95% CI 1.425-6.765; P = 0.004), anticoagulants use or international normalized ratio >1.5 (OR 2.755; 95% CI 1.072-7.082; P = 0.035), and intraventricular hemorrhage (OR 2.351; 95% CI 1.066-5.187; P = 0.034) as independent predictors of HE. The sensitivity and specificity of L (value of combining predictors) were 88.89% and 80.84%, respectively; the area under the curve was 0.918. CONCLUSIONS The findings indicated that the ability of L to predict HE was much more excellent than these 6 predictors alone. L showed a high association with HE, with an accuracy of 91.8%, and was a reliable value of combining predictors in terms of predicting HE. L may serve as a promising, noninvasive tool for clinical therapeutic strategy.
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Affiliation(s)
- Yong-Wei Huang
- Graduate School, Qinghai University, Xining, Qinghai, China
| | - Ming-Fei Yang
- Neurosurgery, Qinghai Provincial People's Hospital, Xining, Qinghai, China.
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Jin XQ, Huang YW, Yang MF. Association Between Gray-White Matter Ratio in Computed Tomography and Outcome in Patients with Extra-Axial Hematoma. World Neurosurg 2018; 116:e759-e765. [PMID: 29807174 DOI: 10.1016/j.wneu.2018.05.086] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 05/11/2018] [Accepted: 05/12/2018] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To evaluate relationship between gray-white matter ratio (GWR) on computed tomography and prognosis in patients with extra-axial hematoma. METHODS Patients with extra-axial hematoma who had undergone surgical treatment at Qinghai Provincial People's Hospital from September 2016 to December 2017 were included. GWR values were calculated by measuring values of gray matter and white matter in Hounsfield units in noninjury sites of basal ganglia. According to Glasgow Outcome Scale score at 3 months after operation, patients were divided into good prognosis (Glasgow Outcome Scale score 4-5) and poor prognosis (Glasgow Outcome Scale score 1-3) groups. RESULTS Of 103 patients who met inclusion criteria and were analyzed, 24 had with a poor outcome, including 5 deaths, and 79 patients had a good outcome. There were significant differences between the 2 groups in terms of age, type of hematoma, admission Glasgow Coma Scale score, and presence of hernia (all P < 0.05). Postoperative HU values of posterior capsule, postoperative GWR values, and difference between preoperative and postoperative GWR values had statistical significance (all P < 0.05). Receiver operating characteristic curve showed that difference between preoperative and postoperative GWR values was the best predictor of poor outcome. CONCLUSIONS The difference between preoperative or postoperative GWR values has a higher sensitivity and greater area under the curve to predict patient outcome. Measuring the difference between preoperative and postoperative GWR values may be useful as an objective early predictor of outcome in patients with extra-axial hematoma. Larger samples and multicenter prospective studies are still required.
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Affiliation(s)
- Xiao-Qing Jin
- Department of Graduate School, Qinghai University, Qinghai, China
| | - Yong-Wei Huang
- Department of Graduate School, Qinghai University, Qinghai, China
| | - Ming-Fei Yang
- Department of Neurosurgery, Qinghai Provincial People's Hospital, Qinghai, China.
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Li DF, Yang MF, Shi SL, Du YL, Wang H, Zhou YL, Luo YL, Ren LL, Nie YQ. TM4SF5-CTD-2354A18.1-miR-4697-3P may play a key role in the pathogenesis of gastric cancer. ACTA ACUST UNITED AC 2016; 116:608-15. [PMID: 26531872 DOI: 10.4149/bll_2015_118] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
AIMS Our aim is to identify important lncRNAs and mRNAs which may play a key role in contributing to pathogenesis of gastric cancer. METHODS Different LncRNAs and mRNAs are identified by microarray in gastric cancer tissue and corresponding normal tissues. The function and relationship of different LncRNAs and mRNAs is performed by GO analysis and Pathway analysis and made code-non-code network (CNC) by Pearson correlation coefficients (PCC). Then mRNA-miRNA relationship is predicted through mRNA-miRNA relationship software (http://www.targetscan.org). Lastly, mRNA-miRNA-LncRNA network is established for further research. RESULTS The expression profiles of 3732 lncRNAs showed different expression (fold change (FC)≥2.0, p<0.05) in gastric cancer tissue and normal tissue and expression profiles of 3994 mRNAs also showed different expression (FC≥2.0, p<0.05) in gastric cancer and corresponding normal tissue. CONCLUSION The expression of TM4SF5, CTD-2354A18.1 and miR-4697-3P is in balance at physiological conditions, however, the balance is disrupted by some situations, which may contribute to gastric cancer. GO analysis and Pathway analysis also showed TM4SF5 played an important role in proliferation, differentiation and apoptosis. Therefore, TM4SF5-miR-4697-3P- CTD-2354A18.1 may play a key role in the pathogenesis of gastric cancer (Tab. 2, Fig. 4, Ref. 30).
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Yang MF, Li DF, Nie YQ. Research of inhibition of survivin in rat HSC-T6 cell by siRNA interference. ACTA ACUST UNITED AC 2015; 116:446-50. [PMID: 26286248 DOI: 10.4149/bll_2015_084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
OBJECTIVE To explore the effects and mechanisms of siRNA targeting survivin of inducing apoptosis in rat HSC-T6 cells. METHODS The experiment was divided into blank group, pGPU6/GFP/Neo-shNC group and pGPU6/GFP/Neo-siRNA group. The siRNA was transfected into HSC-T6 cells mediated by LipofectamineTM2000 for 24 h, and then the efficiency of transfection was observed by fluorescence microscopy. After transfection for 48h, the expression of survivin mRNA and protein was assessed by reverse transcription-polymerase chain reaction (RT-PCR) method and Western-blot, and the form of cells was observed by microscopy. The apoptosis rate of HSC-T6 cells was measured by the flow cytometry with PI staining. The expression of caspase-3 protein was assessed by western-blot. RESULTS The prominent apoptosis of the pGPU6/GFP/Neo-siRNA group by PI staining was high, there was significant difference comparing with blank group and pGPU6/GFP/Neo- shNC group (p<0.05). The expression of caspase-3 by Western-blot in pGPU6/GFP/Neo-siRNA group was high, there was significant difference comparing with blank group and pGPU6/GFP/Neo-shNC group (p>0.05). CONCLUSION siRNA targeting survivin can inhibit the expression of survivin mRNA and protein in rat HSC-T6 cells. Expression of survivin is negative correlation with expression of caspase-3. siRNA targeting survivin may up-regulate expression of caspase-3 and increase apoptosis of rat HST-T6 (Fig. 6, Ref. 24).
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Hu JH, Zhao H, Huang YP, Zhang X, Gao HN, Yang MF, Fan J, Ma WH. Opportunistic posttransplantation virus infections in renal transplant recipients. Transplant Proc 2012; 43:3715-9. [PMID: 22172833 DOI: 10.1016/j.transproceed.2011.07.024] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2010] [Revised: 06/18/2011] [Accepted: 07/27/2011] [Indexed: 12/20/2022]
Abstract
BACKGROUND Opportunistic virus infection is one of the most common complications in renal transplant (RT) recipients. Cytomegalovirus (CMV) and BK virus (BKV) are important pathogens and each of these infections affects the other. In contrast, there is only limited information on JC virus (JCV) infection and its relation to CMV infection in RT recipients. This prospective study investigated the rates of JCV and CMV infections and their risk factors and correlations. METHODS We studied 52 RT recipients. JCV and CMV were detected using nested qualitative polymerase chain reaction assays of urine. The clinical characteristics of JCV and CMV infection were compared and risk factors analyzed with the use of binary logistic regression. RESULTS JCV and CMV were detected in 40.4% and 34.6% of the RT recipients, respectively. Cyclosporine (CsA) was a risk factor for both JCV and CMV infection (odds ratio [OR] 7.187; P=.002; OR 4.182; P=.021); CMV infection was a risk factor for JCV infection (OR 3.900; P=.039). CONCLUSIONS JCV and CMV infections are common in RT recipients. CsA is a risk factor for both JCV and CMV infection. JCV infection is related to CMV infection.
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Affiliation(s)
- J H Hu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
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Zhang X, Fan J, Yang MF, Chen XM, Gao HN, Zhao H, Ma WH, Li LJ. Monitoring of human cytomegalovirus infection in bone marrow and liver transplant recipients by antigenaemia assay and enzyme-linked immunosorbent assay. J Int Med Res 2009; 37:31-6. [PMID: 19215671 DOI: 10.1177/147323000903700104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Human cytomegalovirus (HCMV) infection is a common complication in transplant recipients. Sensitive, specific and timely diagnostic tests for the detection of HCMV infection remain essential for successful therapy. The results of three tests to detect HCMV in bone marrow and liver transplant recipients were compared: a pp65 antigenaemia assay, an immediate-early (IE) antigenaemia assay and an anti-HCMV immunoglobulin M (IgM) antibody enzyme-linked immunosorbent assay (ELISA). Of 1344 samples, 911 (67.8%) and 917 (68.2%) samples were positive for pp65 and IE, respectively. The coincidence level was 85.1%. There was no statistical difference after transplantation to the first positive detection of HCMV (mean first checkout time) between the pp65 and IE antigenaemia assays. Moreover, the levels of HCMV detected by the pp65 and IE antigenaemia assays were significantly correlated. The HCMV-positivity rate as detected by the anti-HCMV IgM ELISA was 11.1%, which was significantly different from the IE and pp65 antigenaemia assays. We suggest that the IE antigenaemia assay could replace the pp65 antigenaemia assay for monitoring active HCMV infection and early detection of HCMV infection.
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Affiliation(s)
- X Zhang
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
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Shi WF, Gibbs MJ, Zhang YZ, Zhang Z, Zhao XM, Jin X, Zhu CD, Yang MF, Yang NN, Cui YJ, Ji L. Genetic analysis of four porcine avian influenza viruses isolated from Shandong, China. Arch Virol 2007; 153:211-7. [PMID: 18000640 DOI: 10.1007/s00705-007-1083-1] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2007] [Accepted: 09/20/2007] [Indexed: 10/22/2022]
Abstract
A Bayesian phylogenetic analysis of eight separate gene segments indicated A/Swine/Shandong/2/2003 (H5N1), A/Swine/Shandong/na/2003 (H9N2), A/Swine/Shandong/nb/2003 (H9N2) and A/Swine/Shandong/nc/2005 (H9N2) probably represent two multiple reassortant lineages, that had not been described before, with genes coming from H5N1, H9N2 and other lineages from poultry in Asia. Amino acid motifs within the haemagglutinin sequence of A/Swine/Shandong/nb/2003 suggested it may be able to infect people, whereas the sequences of the other three isolates suggested they would not have had that capability. Our analysis emphasizes the need for a comprehensive study of the interactions between H5N1 and H9N2 viruses in Asia that includes sequencing and phylogenetic investigation.
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Affiliation(s)
- W F Shi
- Institute of Life Sciences, Taishan Medical College, Shandong Tai'an, China.
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Wei R, Han JJ, Bai B, Ren DL, Chen B, Yang MF, Xia ZL. Analysis of factors influencing the blood levels and activities of tissue-type plasminogen activator (t-PA). Clin Hemorheol Microcirc 2003; 29:351-6. [PMID: 14724361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/28/2023]
Abstract
This study aimed to correlate plasmatic tissue-type plasminogen activator (t-PA) levels and activity with parameters of artery blood flow and vessel walls, nail fold microcirculation, hemorheology, serum glucose, and lipids. Thirty healthy volunteers (female/male 12/18) aged 40-60 (average 46) were included in the study. In citrate venous blood, the following parameters were determined: carotid mean velocity, carotid intimal-medial-thickness (IMT), capillary circulation parameters, hemorheology index, serum glucose, and lipids. Analysis of data showed that t-PA concentration was positively and significantly correlated with total cholesterol, triglycerides, and serum glucose (P<0.05, P<0.05, and P<0.01), but t-PA activity showed no correlation with them; among the hemorheology factors investigated, t-PA concentration showed the strongest positive correlation with both whole blood viscosity and reduced blood viscosity at high and low shear rate separately (P<0.01), t-PA activity showed no correlation with any hemorheology factors; t-PA concentration showed no correlation with any investigated nail fold capillary parameters, whereas t-PA activity was significantly and negatively associated with capillary loop number (P<0.05); t-PA concentration and activity was not associated with values of carotid maximum intimal-medial-thickness (mIMT) and mean velocity or systolic, diastolic blood pressure (P>0.05). But subjects with mIMT 1.0 mm showed higher t-PA levels compared with those with mIMT < 1.0 mm (P<0.05) and decreased carotid mean velocity (P<0.01). These findings suggest that multiple vascular disease risk factors would influence the t-PA level; t-PA concentration does not parallelize with t-PA activity.
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Affiliation(s)
- R Wei
- Institute of Basic Medical Science, Taishan Medical College, Taian, Shandong 271000, China
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Sun BL, Xia ZL, Yang MF, Qiu PM. Effects of Ginkgo biloba extract on somatosensory evoked potential, nitric oxide levels in serum and brain tissue in rats with cerebral vasospasm after subarachnoid hemorrhage. Clin Hemorheol Microcirc 2001; 23:139-44. [PMID: 11321433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
This study aimed to investigate the protective effects of Ginkgo biloba extract on cerebral vasospasm and neural damage following subarachnoid hemorrhage (SAH) in rats. It was found that the regional cerebral blood flow decreased immediately and persistently after SAH in SAH rats. The latency of somatosensory evoked potential delayed progressively. The nitric oxide levels in serum and brain tissue decreased and increased, respectively, after SAH. Ginkgo biloba extract effectively antagonized the changes of above parameters. It was concluded that somatosensory evoked potential is useful for the judgement of cerebral ischemic damage during cerebral vasospasm after SAH. Decrease in serum nitric oxide and increase in brain tissue nitric oxide are important factors leading to cerebral vasospasm and neural damage, respectively, after SAH. Ginkgo biloba extract relieves cerebral vasospasm and cerebral ischemic damage by reversing the pathological alteration of nitric oxide.
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MESH Headings
- Animals
- Brain Chemistry/drug effects
- Brain Damage, Chronic/etiology
- Brain Damage, Chronic/prevention & control
- Brain Ischemia/etiology
- Brain Ischemia/prevention & control
- Drug Evaluation, Preclinical
- Drugs, Chinese Herbal/pharmacology
- Drugs, Chinese Herbal/therapeutic use
- Evoked Potentials, Somatosensory/drug effects
- Female
- Flavonoids/pharmacology
- Flavonoids/therapeutic use
- Ginkgo biloba/therapeutic use
- Male
- Nitric Oxide/analysis
- Nitric Oxide/blood
- Phytotherapy
- Plant Extracts
- Plants, Medicinal
- Rats
- Rats, Wistar
- Reaction Time/drug effects
- Subarachnoid Hemorrhage/complications
- Vasospasm, Intracranial/drug therapy
- Vasospasm, Intracranial/etiology
- Vasospasm, Intracranial/physiopathology
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Affiliation(s)
- B L Sun
- Institute of Microcirculation, Affiliated Hospital of Taishan Medical College, Taian, Shandong, China.
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Sun BL, Xia ZL, Yan ZW, Chen YS, Yang MF. Effects of blockade of cerebral lymphatic drainage on cerebral ischemia after middle cerebral artery occlusion in rats. Clin Hemorheol Microcirc 2001; 23:321-5. [PMID: 11321458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
This experiment aimed to investigate the effects of blockade of cerebral lymphatic drainage on cerebral ischemic damage. Seventy six Wistar rats were divided randomly into middle cerebral artery occlusion (MCAO) group and MCAO plus cerebral lymphatic blockade (MCAO+CLB) group for the experiment. The contents of water and electrolytes, the activity of superoxide dismutase (SOD) and the content of malondialdehyde (MDA) in the ischemic brain tissue were detected at 24, 48 and 72 hours after the operation. The morphologic examination was also performed. In MCAO group, contents of water, sodium and calcium in the ischemic brain tissue increased significantly at any time after the operation. The SOD activity decreased while the MDA content increased markedly. The morphologic findings showed severe damage of ischemic brain tissue and neurons. In MCAO+CLB group, the above parameters were altered more obviously. The present observation suggests that blockade of cerebral lymphatic drainage may deteriorate ischemic brain damage after MCAO.
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Affiliation(s)
- B L Sun
- Institute of Microcirculation, Affiliated Hospital of Taishan Medical College, Taian, Shandong, China.
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Sun BL, Xia ZL, Yang MF. [Changes of nitric oxide and endothelin-1 levels in rat brain tissue during cerebral vasospasm following subarachnoid hemorrhage and protective effect of nimodipine]. Zhongguo Ying Yong Sheng Li Xue Za Zhi 2001; 17:255-258. [PMID: 21189627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
AIM To investigate the changes of nitric oxide and endothelin-1 levels in brain tissue in rat with cerebral vasospasm (CVS) following subarachnoid hemorrhage (SAH), and the protective effect of nimodipine. METHODS Wistar rats were divided randomly into SAH group, nimodipine-treated group and sham-operated group. Diameters of basilar artery before and after operation were measured, and dynamic changes of regional cerebral blood flow (rCBF), brain nitric oxide and endothelin-1 levels were determined within 24 h. Pathological examination of hippocampus was also performed. RESULTS SAH resulted in significant and persistent decrease of rCBF. Diameter of basilar artery was reduced markedly. Neurons in hippocampus CA1 subfield were damaged severely. Both nitric oxide and endothelin-1 levels in brain tissue were increased significantly from 1 h to 24 h after SAH. However, the pathological changes of above parameters were not so severe in nimodipine-treated rats. CONCLUSION Increase of nitric oxide and endothelin-1 levels in brain tissue is probably involved in the development of ischemic brain damage caused by CVS after SAH. Nimodipine exerts its protective effect on brain neurons by antagonizing CVS and the pathological changes of nitric oxide and endothelin-1 in brain tissue.
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Affiliation(s)
- B L Sun
- Department of Neurology, Affiliated Hospital of Taishan Medical College, Taian 271000, China
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Yang MF, Sun SJ, Chang MC. Comment on "Theory of diluted magnetic semiconductor ferromagnetism". Phys Rev Lett 2001; 86:5636-5637. [PMID: 11415320 DOI: 10.1103/physrevlett.86.5636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2000] [Indexed: 05/23/2023]
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Sun BL, Xia ZL, Yang MF, Qiu PM. [Effects of ginkgo biloba extract on somatosensory evoked potential and nitric oxide after subarachnoid hemorrhage]. Zhongguo Zhong Yao Za Zhi 2001; 26:329-32. [PMID: 12528524] [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: 02/28/2023]
Abstract
OBJECTIVE To observe the changes of somatosensory evoked potential(SEP) and nitric oxide (NO) after subarachnoid hemorrhage(SAH), and the influence of Ginkgo biloba extract (EGb). METHOD Rats in sham-operated group, SAH model group and EGb-treated group underwent measurement of dynamic changes of regional cerebral blood flow(rCBF), SEP and NO levels both in serum and in brain tissue within 24 h after operation. RESULT In SAH group, rCBF decreased immediately after operation, with no tendency to recover within 24 h. The latency of SEP delayed progressively from 1 h to 24 h after SAH. NO levels in serum and in brain tissue decreased and increased respectively from 1 h to 24 h after SAH. EGb effectively antagonized the changes of above parameters. CONCLUSION SEP is helpful in the judgement on brain ischemic damage after SAH. Decrease of NO in serum and increase of that in brain tissue may lead to cerebral vasospasm and ischemic brain damage respectively after SAH. EGb relieves SAH-induced brain ischemic damage by reversing the pathological alterations of NO.
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Affiliation(s)
- B L Sun
- Department of Neurology, Affiliated Hospital of Taishan Medical College, Taian 271000, Shandong, China
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Zhu XF, Harris AG, Yang MF, Shi YF, Zhou Q, Xu JY, Zhang JX. Effect of octreotide on dynamic excretion of bile in Chinese acromegalic patients assessed by [99mTc]EHIDA hepatobiliary scan. Dig Dis Sci 1994; 39:284-8. [PMID: 8313809 DOI: 10.1007/bf02090198] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
We used [99mTc]EHIDA hepatobiliary scintigraphy to determine whether both hepatic bile secretion and gallbladder contractility are suppressed in acromegalic patients receiving long-term treatment with the somatostatin analogue octreotide. We studied three groups of patients: group 1, untreated patients; group 2, average dose of octreotide 500 +/- 100 micrograms/day for 33 +/- 4 months; and group 3, 1000 +/- 200 micrograms/day for 33 +/- 4 months. Images were taken at specified time intervals during the 120-min period following injection of EHIDA. After a single injection of octreotide, group 1 patients demonstrated delayed visualization of the radioisotope in the liver, gallbladder, and duodenum. At the end of long-term treatment, group 2 patients showed a delay in appearance of maximal radioactivity in the gallbladder. Two weeks following discontinuation of octreotide, this parameter had decreased significantly (P < 0.001). In group 3, visualization of the liver, gallbladder, and duodenum were prolonged, with delayed visualization of the gallbladder persisting two weeks after withdrawal (P < 0.005). These results indicate that gallbladder contractility is decreased after a single injection of octreotide and that during chronic octreotide therapy the rate of bile secretion is reduced. Impaired gallbladder contractility normalizes more rapidly after discontinuation of octreotide in patients receiving low doses of the analog.
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Affiliation(s)
- X F Zhu
- Department of Endocrinology, Nuclear Medicine, Peking Union Medical College Hospital, Beijing, P.R. China
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Yang MF, Sun SJ, Hong TM. Slave-boson mean-field theory versus variational-wave-function approach for the periodic Anderson model. Phys Rev B Condens Matter 1993; 48:16123-16126. [PMID: 10008183 DOI: 10.1103/physrevb.48.16123] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Sun SJ, Yang MF, Hong TM. Magnetic properties of the symmetric periodic Anderson model in infinite dimensions. Phys Rev B Condens Matter 1993; 48:16127-16130. [PMID: 10008184 DOI: 10.1103/physrevb.48.16127] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Yin HS, Yang MF. Effect of monensin on the neuronal ultrastructure and endocytic pathway of macromolecules in cultured brain neurons. Cell Mol Neurobiol 1992; 12:297-307. [PMID: 1394368 DOI: 10.1007/bf00734930] [Citation(s) in RCA: 8] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
1. The endocytic pathway of horseradish peroxidase (HRP) was investigated in the perikarya of cultured neurons by electron microscopy and enzyme cytochemistry. The tracer was observed in endocytic pits and vesicles, endosomes, multivesicular bodies, and lysosomes. It took approximate 15 min for the transfer of HRP from the exterior of the cell to the lysosomes. 2. Monensin induced distension of the Golgi apparatus and formation of intracellular vacuoles. When neurons were incubated with both monensin and HRP for 30 to 120 min, the number of HRP-labeled endosomes was greater than that in the monensin-free group, whereas the reverse was seen for HRP-positive lysosomes. The formation of HRP-positive lysosomes in monensin-treated cells was blocked by 47 to 79%. 3. These results indicate that the intracellular transport of the endocytosed macromolecule is pH dependent. It is also possible that the export of lysosomal enzymes is inhibited by monensin, resulting in an accumulation of the endosomes and a reduction of the lysosomes.
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Affiliation(s)
- H S Yin
- Department of Anatomy, College of Medicine, National Taiwan University, Taipei, Republic of China
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Zhao ZQ, Zang YM, Wang FZ, Li ZJ, Yang MF, Ma SY. [Effect of cardiac sympathetic nerves on changes of TXB2 and 6-keto-PGF1 alpha in venous blood of ischemic myocardium]. Sheng Li Xue Bao 1989; 41:30-9. [PMID: 2762830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Experiments were performed on 54 anesthetized, open-chest dogs to observe the effect of cardiac sympathetic nerves and alpha- and beta-adrenoceptor blockades on changes of platelet function during the early phase of myocardial ischemia. It was shown that contents of TXB2 and 6-keto-PGF1 alpha after coronary occlusion were markedly increased, and the platelet count was reduced in the coronary venous blood of ischemic myocardium. It was found that the changes in parameters of platelet function after coronary occlusion were significantly relieved by topical application of lignocaine-soaked gauze pads to the ischemic area of the heart or by bilateral stellectomy for blocking impulse of afferent and efferent of cardiac sympathetic nerves, compared with changes in parameters of control group, P less than 0.01. On the other hand, changes in parameters of the control group could be restored by intravenous infusion of noradrenaline to dogs which bilateral stellectomy was performed on, but not by infusion of normal saline. Different effects of alpha- and beta-adrenoceptor blockades on the changes in aforementioned parameters were found. The changing degrees in elevation of TXB2 and 6-keto-PGF1 alpha and in decrease of platelet count were significantly relieved by intravenous infusion of yohimbine (an alpha 2-blocker), phentolamine (a nonselective alpha-blocker), and propranolol (a beta-blocker), but not by infusion of prazosin (an alpha 1-blocker). Results were compared with the control group, P less than 0.01. These results suggest that cardiac sympathetic nerves play an important role for the changes of platelet function during the early phase of myocardial ischemia and that, yohimbine and phentolamine may exert an improving effect by blocking alpha 2-receptors on the platelet membrane, and propranolol may directly contribute to stabilization of the platelet membrane.
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Yang MF. [Thromboxane B2 (125I) radioimmunoassay and its clinical uses]. Zhong Xi Yi Jie He Za Zhi 1988; 8:627. [PMID: 3255548] [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: 01/04/2023]
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Zhu XM, Wang SZ, Zhou Q, Yang MF, Ma HZ, Liu GD, Hu XF, Lian LJ, Liu WS, Xia ZM. [Radioimmunoimaging of AFP-producing tumors, CEA-producing tumors and ovarian cancers]. Zhongguo Yi Xue Ke Xue Yuan Xue Bao 1987; 9:140-3. [PMID: 2440596] [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: 12/31/2022]
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Fu QL, Yang MF, Li ZJ, Jiang YY, Song SB, Song TH, Wang HX. [Prostaglandin E (PGE) and gastric carcinoma]. Zhonghua Zhong Liu Za Zhi 1986; 8:345-8. [PMID: 3032544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Since 1984, an experimental and clinical study on the relation between PGE and gastric carcinoma has been performed by determining PGE content in the bioptic gastric mucosa and plasma. It is found the PGE content in the gastric mucosa and plasma is increased in all patients with gastric cancer, especially with signet ring cell carcinoma. It is higher in the regional lymph node metastasis than in the early cancer, extensive metastases and normal subjects. The PGE content in the plasma is reduced obviously 7-10 days after operation but is increased markedly in recurrent patients. There is no significant difference in extensive metastases, relapse free and normal subjects. The PGE content in the plasma is significantly higher in gastric carcinoma than in chronic atrophic gastritis, but no difference is present between chronic atrophic gastritis and normal subjects.
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