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Dong HR, Yu JJ, Chen XY, Xu KL, Xie R. [Application of super-resolution and ultrafast ultrasound to reveal the characteristics of vascular blood flow changes after rat spinal cord injury at different segments]. Zhonghua Yi Xue Za Zhi 2024; 104:690-694. [PMID: 38418168 DOI: 10.3760/cma.j.cn112137-20231020-00830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 03/01/2024]
Abstract
Objective: To investigate the changes of spinal vascular blood flow in SD rats after cervical, thoracic and lumbar spinal cord injury (SCI) using super-resolution ultrafast ultrasound technology. Methods: A total of 9 SD rats were used to construct SCI models at different segments using a 50 g aneurysm clip. Super-resolution ultrafast ultrasound technology was used to perform vascular blood flow imaging on the spinal cord of rats before and after injury at 6 hours, obtaining quantitative information such as spinal cord vascular density and blood flow velocity. Results: Ultrasound imaging showed that after SCI, the vascular density in the thoracic segment decreased (18.16%±1.04%) more than in the cervical segment (11.42%±1.39%) and lumbar segment (13.88%±1.43%, both P<0.05). The length of the spinal cord with decreased vascular density in the thoracic segment [(4.80±0.34)mm] was longer than that in the cervical segment [(2.80±0.57)mm] and lumbar segment [(3.10±0.36)mm, both P<0.05]. After injury, the decrease of blood flow in the thoracic segment [(8.87±0.85)ml/min] was higher than that in the cervical segment [(4.88±0.56)ml/min] and lumbar segment [(6.19±0.71)ml/min, both P<0.05]. HE staining and Nissl staining showed that the proportion of cavity area after thoracic SCI (11.53%±0.93%) was higher than that in the cervical segment (4.90%±1.72%) and lumbar segment (7.64%±0.84%, both P<0.05). The number of Nissl bodies in the thoracic segment (18.0±5.3) was also lower than that in the cervical segment (32.3±5.1) and lumbar segment (37.0±5.6) (both P<0.05). Conclusions: There are different changes in vascular blood flow after SCI in different segments of rats. The same injury causes the most severe damage to blood vessels in the thoracic spinal cord, followed by the lumbar spinal cord, and the cervical spinal cord has the least damage.
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Affiliation(s)
- H R Dong
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - J J Yu
- School of Information Science and Engineering, Fudan University, Biomedical Engineering Center, Shanghai 200438, China
| | - X Y Chen
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - K L Xu
- School of Information Science and Engineering, Fudan University, Biomedical Engineering Center, Shanghai 200438, China
| | - R Xie
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai 200040, China
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Wang JN, Li TT, Fang JL, Tang S, Zhang Y, Deng FC, Shen C, Shi WY, Liu YY, Chen C, Sun QH, Wang YW, Du YJ, Dong HR, Shi XM. [Associations between personal fine particulate matter and blood lipid profiles: A panel study in Chinese people aged 60-69 years]. Zhonghua Yu Fang Yi Xue Za Zhi 2022; 56:897-901. [PMID: 35899340 DOI: 10.3760/cma.j.cn112150-20220525-00527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To explore the association between short-term exposures to fine particulate matter (PM2.5) on blood lipids in the elderly. Methods: In this panel study, five repeated measurements were performed on 76 people aged 60-69 in Jinan city. Each participant had a PM2.5 monitor for 72 hours before each health examination, including a questionnaire survey, physical examination, and biological sample collection. Serum triglycerides (TG), total cholesterol (TC), high-density lipoprotein cholesterol (HDL-C), and low-density lipoprotein cholesterol (LDL-C) were examined, and non-HDL-C concentrations were calculated by subtracting HDL-C from TC. The generalized linear mixed-effects model was used to quantify the association of personal PM2.5 exposure at different lag with blood lipids and dyslipidemia. Results: The age of 70 participants was (65.0±2.8) years, of which 48.6% (34/70) were males. The BMI of participants was (25.0±2.5) kg/m2. Their TC, TG, LDL-C, HDL-C, and non-HDL-C concentrations were (5.75±1.32), (1.55±0.53), (3.27±0.94), (1.78±0.52), and (3.97±1.06) mmol/L, respectively. Generalized linear mixed-effects model showed that after adjusting for confounding factors, at lag 72 hours, each 10 μg/m3 increase in PM2.5 was associated with the percentage change in TC, LDL-C, HDL-C and non-HDL-C about 1.77% (95%CI: 1.22%-2.32%), 1.90% (95%CI: 1.18%-2.63%), 1.99% (95%CI: 1.37%-2.60%) and 1.74% (95%CI: 1.11%-2.37%), and the OR values (95%CI) of hypercholesterolemia, hypertriglyceridemia and hyperbetalipoproteinemia were 1.11 (1.01-1.22), 1.33 (1.03-1.71) and 1.15 (1.01-1.31), respectively. Conclusion: There is a significant association of short-term PM2.5 exposure with the concentration of blood lipids and the risk of dyslipidemia in the elderly.
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Affiliation(s)
- J N Wang
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - T T Li
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - J L Fang
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - S Tang
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Y Zhang
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - F C Deng
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - C Shen
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - W Y Shi
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Y Y Liu
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - C Chen
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Q H Sun
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Y W Wang
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Y J Du
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - H R Dong
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - X M Shi
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
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He C, Yang YJ, Zhang C, Dong HR. [Value of ratio of sensory nerves conductive velocity along palm-median finger/wrist-palm in diagnosing the carpal tunnel syndrome]. Zhonghua Yi Xue Za Zhi 2016; 96:2462-2465. [PMID: 27562043 DOI: 10.3760/cma.j.issn.0376-2491.2016.31.005] [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: 06/06/2023]
Abstract
OBJECTIVE To Verify the value of the ratio of sensory nerves conductive velocity along palm-median finger /wrist-palm minus 1 for diagnosis of the mild-moderate carpal tunnel syndrome(CTS). METHODS The different value between 1 and the ratio of sensory nerves conductive velocity along palm-median finger/wrist-palm was defined as index-CTS which was used to assess the severity of CTS.The index-CTS of 100 palms from healthy controls and 58 palms from mild-moderate CTS patients were calculated and compared.Multiple regression was used to identify the relative factors of index-CTS.The ROC curve was used to evaluate the sensitivity and specificity of index-CTS at different values. RESULTS The value of index-CTS from healthy controls and patients both fitted Gaussian distribution.The mean value were -0.053±0.042 vs 0.055±0.074 in the controls and the patients respectively.The difference was statistically significant between the two groups by T-test(P<0.001). Multiple regression analysis showed that Tinel sign, Phalen sign, laterality, clinical grade, electrical grade were identifiable factors related to index-CTS.When index-CTS was over 0.001 and Ⅳ-DL over 0.395 ms , specificity of diagnosis by both can get 92%, but index-CTS showed more higher sensitivity(98.3% vs 89.7%). CONCLUSIONS Rising index-CTS could be the most significant electrophysiological feature in CTS.It can be used as a sensitive marker to assess the extent of conduction block of median nerve in carpal tunnel.
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Affiliation(s)
- C He
- Department of Neurology, Jiangsu-shengze Hospital Affiliated to Nanjing Medical University, Suzhou 215228, China
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Su XL, Dong HR, Yan MR, Cui HW, Yang L, Han FQ. Association between peroxisome proliferator-activated receptor gamma coactivator-1 alpha polymorphism and hypertension in Mongolians in Inner Mongolia. Genet Mol Res 2011; 10:3930-6. [PMID: 22194199 DOI: 10.4238/2011.december.12.2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
We investigated a possible association of peroxisome proliferator-activated receptor gamma coactivator-1 alpha (PGC-1α) Gly482Ser polymorphism with hypertension in Mongolians in Inner Mongolia. A total of 787 subjects were enrolled randomly, including 390 hypertension patients and 397 healthy controls. Triglycerides, cholesterol, and fasting plasma glucose were measured, and body mass index was calculated. PCR-RFLP was used to analyze Gly482Ser polymorphisms. There were significant differences in triglycerides, fasting plasma glucose, and body mass index between hypertension patients and healthy controls. Cholesterol levels did not differ significantly. The PGC-1α gene GG, GA and AA genotype distributions were 37.2, 48.5 and 14.4%, respectively, in patients and 48.6, 37.3 and 14.1% in healthy controls. The frequencies of PGC-1α genotype GA and allele A were significantly different between hypertension patients and healthy Mongolians. We concluded that PGC-1α Gly482Ser polymorphism is associated with hypertension in Mongolians in Inner Mongolia.
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Affiliation(s)
- X L Su
- Clinical Research Center of Affiliated Hospital, Inner Mongolian Medical College, Hohhot, Inner Mongolia, China.
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Xu F, Yuan QP, Dong HR. Determination of lycopene and β-carotene by high-performance liquid chromatography using sudan I as internal standard. J Chromatogr B Analyt Technol Biomed Life Sci 2006; 838:44-9. [PMID: 16716775 DOI: 10.1016/j.jchromb.2006.04.004] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [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: 11/11/2005] [Revised: 03/19/2006] [Accepted: 04/03/2006] [Indexed: 11/26/2022]
Abstract
A new method, using sudan I as internal standard to determine the content of lycopene or beta-carotene in samples, was developed. According to UV-vis absorption spectra, sudan I, lycopene and beta-carotene all had absorption peaks at 450 nm. They could be separated absolutely by high-performance liquid chromatography (HPLC) with retention time of 2.7, 6.6 and 10.1 min, respectively. The related equations between sudan I and lycopene or beta-carotene content were obtained and verified by determining the content of lycopene or beta-carotene in Blakeslea trispora cells. The relative error was below 1.4% for determining lycopene content and below 1.9% for beta-carotene. Intra-day variability for lycopene determination was less than 3.4% and for beta-carotene was less than 1.4%. The mean recovery of lycopene or beta-carotene was 96.1 and 97.9%, respectively.
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Affiliation(s)
- F Xu
- College of Life Science and Technology, Beijing University of Chemical Technology, P.O. Box 75, Beijing 100029, PR China
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