1
|
Wang YY, Liu XJ, Pei LL, Liu K, Hu RY, Wang X, Sun WX, Zhang LY, Liang J, Xu YM, Song B. [The prevalence of atrial cardiomyopathy in patients with different types of acute ischemic stroke and its relationship with cryptogenic stroke]. Zhonghua Yi Xue Za Zhi 2022; 102:3598-3603. [PMID: 36480863 DOI: 10.3760/cma.j.cn112137-20220406-00714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Objective: To investigate the prevalence of atrial cardiomyopathy in patients with different types of acute ischemic stroke and its relationship with cryptogenic stroke. Methods: Patients with acute ischemic stroke within 7 days of onset who were admitted to the Department of Neurology of the First Affiliated Hospital of Zhengzhou University from January to September 2019 were prospectively and consecutively enrolled. All included patients were classified according to TOAST classification of ischemic stroke. Chi-square test was used to compare the prevalence of atrial cardiomyopathy among patients with different TOAST classifications. Multivariate logistic regression model was used to analyze the related factors of cryptogenic stroke. Results: A total of 1 098 patients with acute ischemic stroke were enrolled in the study, including 661 males and 437 females, with a median age [M(Q1,Q3)] of 61 (53, 68) years. The prevalence of atrial cardiomyopathy in patients with cryptogenic stroke[53.5% (46/86)] was higher than that in patients with large artery atherosclerosis [38.0%(63/166), P=0.018] and small vessel occlusion [19.4%(37/191), P<0.001], but was lower than that of patients in the cardioembolic group [97.3% (72/74), P<0.001]. Multivariate logistic regression analysis showed that atrial cardiomyopathy was an associated factor for cryptogenic stroke (OR=2.945, 95%CI: 1.766-4.911, P<0.001). Conclusions: Atrial cardiomyopathy is associated with cryptogenic stroke. The prevalence of atrial cardiomyopathy in patients with cryptogenic stroke is higher than that in patients with large artery atherosclerosis and small vessel occlusion, but lower than that in patients with cardiac embolism.
Collapse
Affiliation(s)
- Y Y Wang
- Department of Neurology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - X J Liu
- Department of Neurology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - L L Pei
- Department of Neurology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - K Liu
- Department of Neurology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - R Y Hu
- Department of Neurology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - X Wang
- Department of Neurology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - W X Sun
- Department of Neurology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - L Y Zhang
- Department of Neurology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - J Liang
- Department of Neurology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Y M Xu
- Department of Neurology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - B Song
- Department of Neurology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| |
Collapse
|
2
|
Sun WX, Zhang CT, Yu XN, Guo JB, Ma H, Liu K, Luo P, Ren J. Preparation and pharmacokinetic study of diosmetin long-circulating liposomes modified with lactoferrin. J Funct Foods 2022. [DOI: 10.1016/j.jff.2022.105027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
|
3
|
Sun XL, Sun L, Sun WX, Zong XL. A comparative study of dexmedetomidine in combination with midazolam and dexmedetomidine alone for sedation during spinal anesthesia. J BIOL REG HOMEOS AG 2020; 34:2135-2139. [PMID: 33334094 DOI: 10.23812/20-366-l] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Affiliation(s)
- X L Sun
- Department of Anesthesia, Zibo Central Hospital, Zibo, Shandong Province, China
| | - L Sun
- Department of Anesthesia, Zibo Central Hospital, Zibo, Shandong Province, China
| | - W X Sun
- Department of Anesthesia, Zibo Central Hospital, Zibo, Shandong Province, China
| | - X L Zong
- Department of Anesthesia, Zibo Central Hospital, Zibo, Shandong Province, China
| |
Collapse
|
4
|
Qing LS, Chen TB, Sun WX, Chen L, Luo P, Zhang ZF, Ding LS. Pharmacokinetics Comparison, Intestinal Absorption and Acute Toxicity Assessment of a Novel Water-Soluble Astragaloside IV Derivative (Astragalosidic Acid, LS-102). Eur J Drug Metab Pharmacokinet 2019; 44:251-259. [PMID: 30315409 DOI: 10.1007/s13318-018-0515-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND AND OBJECTIVES Astragaloside IV (AGS IV) is the most important bioactive constituent of Radix Astragali. However, its disappointing clinical application is mainly caused by its very low solubility in biologic fluids, resulting in poor bioavailability after oral administration. We recently obtained a novel water-soluble derivative of AGS IV (astragalosidic acid, LS-102) that displayed significant cardioprotective potential against hypoxia-induced injury. The objective of this study was to investigate the intestinal absorption, main pharmacokinetic parameters and acute toxicity of LS-102 in rodents compared with AGS IV. METHODS An oral dose of LS-102 and AGS IV (20 mg/kg) was administered to Sprague-Dawley (SD) rats, and blood samples were collected at predetermined time points. The plasma concentrations were detected by a validated UHPLC-MS/MS method, and pharmacokinetic parameters were calculated using a compartmental model. In the intestinal permeability study, the transport of LS-102 across Caco-2 cell monolayers was investigated at six concentrations from 6.25 to 250 µM. Moreover, the acute toxicity of LS-102 (40-5000 mg/kg) via a single oral administration was investigated in BALB/c mice. RESULTS LS-102 was rapidly absorbed, attaining a maximum concentration of 248.7 ± 22.0 ng/ml at 1.0 ± 0.5 h after oral administration. The relative bioavailability of LS-102 was twice that of AGS IV. LS-102 had a Papp (mean) of 15.72-25.50 × 10-6 cm/s, which was almost 500-fold higher than that of AGS IV, showing that LS-102 had better transepithelial permeability and could be better absorbed in the intestinal tract. The acute toxicity study showed no abnormal changes or mortality in mice treated with LS-102 even at the single high dose of 5000 mg/kg body weight. CONCLUSIONS Oral LS-102 produced a pharmacokinetic profile different from AGS IV with higher bioavailability, while the toxic tolerance was similar to previous estimates. Thus, we speculated that LS-102 might provide better clinical efficacy and be a potential candidate for the new drug development of Radix Astragali.
Collapse
Affiliation(s)
- Lin-Sen Qing
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, China
| | - Ting-Bo Chen
- State Key Laboratory for Quality Research of Chinese Medicines, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macau, China
| | - Wen-Xia Sun
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, Chengdu University, Chengdu, China
| | - Li Chen
- State Key Laboratory for Quality Research of Chinese Medicines, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macau, China
| | - Pei Luo
- State Key Laboratory for Quality Research of Chinese Medicines, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macau, China.
| | - Zhi-Feng Zhang
- State Key Laboratory for Quality Research of Chinese Medicines, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macau, China
| | - Li-Sheng Ding
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, China
| |
Collapse
|
5
|
Sun WX, Zhang ZF, Xie J, He Y, Cheng Y, Ding LS, Luo P, Qing LS. Determination of a astragaloside IV derivative LS-102 in plasma by ultra-performance liquid chromatography-tandem mass spectrometry in dog plasma and its application in a pharmacokinetic study. Phytomedicine 2019; 53:243-251. [PMID: 30668404 DOI: 10.1016/j.phymed.2018.09.019] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [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: 12/18/2017] [Revised: 07/13/2018] [Accepted: 09/03/2018] [Indexed: 06/09/2023]
Abstract
BACKGROUND Astragalosidic acid (LS-102) is a new water-soluble derivative of astragaloside IV - a major effective component isolated from the Chinese herb Astragali Radix. Our previous study showed that LS-102 exhibited potent cardiovascular activity. PURPOSE The objective of this study was to investigate the pharmacokinetic properties of LS-102 after single-dose, oral administration in beagle dogs by developing and validating an ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) method. METHOD AND RESULT The chromatographic separation was performed on a Acquity HSS C18 column (100 mm × 2.1 mm, 1.8 µm) by a gradient elution using a mobile phase consisting of water and acetonitrile at a flow rate of 0.35 ml/min. The analytes were detected with a triple quadrupole tandem mass spectrometry in multiple reaction monitoring mode. Method validation revealed a wide linearity over the range of 2.0-10,000 ng/ml together with satisfactory intra- and inter-day precision, accuracy, and recovery. Stability testing showed that LS-102 spiked into dog plasma was stable for 4 h at room temperature, for up to 2 weeks at -80 °C, and during three freeze-thaw cycles. The method was effectively and successfully applied to the pharmacokinetics of LS-102 after oral administration (5, 10 and 20 mg/kg) to beagle dogs. Peak plasma concentrations are attained within approximately 2 h after oral administration with a half-life ranging from 1.55 h to 4.49 h. The plasma concentration-time curve of LS-102 after oral administration presents the phenomenon of a double-peak absorption phase. The peak concentration and area under the concentration-time curve of LS-102 seemed to increase with the increasing doses proportionally, that suggesting linear pharmacokinetics in dogs. Meanwhile, the doxorubicin (Dox)-injured H9c2 cell model was prepared by incubating the cells in 1 µM Dox for 24 h. MTT assay and LDH release measurement showed that LS-102 protected against Dox-induced cardiomyocyte death. CONCLUSION The obtained results may help to guide the further pre-clinical research of LS-102 as a potentially novel cardioprotective agent.
Collapse
Affiliation(s)
- Wen-Xia Sun
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, China; State Key Laboratories for Quality Research in Chinese Medicines, Macau University of Science and Technology, Macau, China; Sichuan Industrial Institute of Antibiotics, Chengdu University, Chengdu, China
| | - Zhi-Feng Zhang
- State Key Laboratories for Quality Research in Chinese Medicines, Macau University of Science and Technology, Macau, China
| | - Jing Xie
- State Key Laboratories for Quality Research in Chinese Medicines, Macau University of Science and Technology, Macau, China; School of Pharmacy, Chengdu Medical College, Chengdu, China
| | - Ying He
- Sichuan Industrial Institute of Antibiotics, Chengdu University, Chengdu, China
| | - Yong Cheng
- Sichuan Industrial Institute of Antibiotics, Chengdu University, Chengdu, China
| | - Li-Sheng Ding
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, China
| | - Pei Luo
- State Key Laboratories for Quality Research in Chinese Medicines, Macau University of Science and Technology, Macau, China.
| | - Lin-Sen Qing
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, China.
| |
Collapse
|
6
|
Xu LY, Wang MY, Shi XZ, Yu QB, Shi YJ, Xu SX, Sun WX. Effect of long-term organic fertilization on the soil pore characteristics of greenhouse vegetable fields converted from rice-wheat rotation fields. Sci Total Environ 2018; 631-632:1243-1250. [PMID: 29727949 DOI: 10.1016/j.scitotenv.2018.03.070] [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] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 03/05/2018] [Accepted: 03/07/2018] [Indexed: 06/08/2023]
Abstract
The shift from rice-wheat rotation (RWR) to greenhouse vegetable soils has been widely practiced in China. Several studies have discussed the changes in soil properties with land-use changes, but few studies have sought to address the differences in soil pore properties, especially for fields based on long-term organic fertilization under greenhouse vegetable system from RWR fields. This study uses the X-ray computed tomography (CT) scanning and statistical analysis to compare the long-term effects of the conversion of organic greenhouse vegetable fields (over one year, nine years, and fourteen years) from RWR fields on the soil macropore structure as well as the influencing factors from samples obtained in Nanjing, Jiangsu, China, using the surface soil layer and triplicate samples. The results demonstrated that the macropore structure became more complex and stable, with a higher connectivity, fractal dimension (FD) and a lower degree of anisotropy (DA), as the greenhouse vegetable planting time increased. The total topsoil macroporosity increased considerably, but the rate of increase gradually decelerated with time. The transmission pores (round pores ranging from 50 to 500μm) increased with time, but the biopores (>2000μm) clearly decreased after nine years of use as greenhouse vegetable fields. Soil organic matter (OM) has a significant relationship with the soil pore structure characteristics, especially for the transmission pores. In addition, organic fertilization on the topsoil had a short-term effect on the pores, but the effect stabilized and had a weak influence on the pores over longer periods. These results suggested that organic fertilization was conducive for controlling soil degradation regarding it physical quality for water and oxygen availability in the short term.
Collapse
Affiliation(s)
- L Y Xu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; University of the Chinese Academy of Sciences, Beijing 100049, China
| | - M Y Wang
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China.
| | - X Z Shi
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Q B Yu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Y J Shi
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; University of the Chinese Academy of Sciences, Beijing 100049, China
| | - S X Xu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - W X Sun
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| |
Collapse
|
7
|
Yuan XX, Li Y, Sha SF, Sun WX, Qiu Y, Liu Z, Zhu WG, Zhu ZZ. [Genetic analysis of posterior cranial fossa morphology in families of Chiari malformation type Ⅰ]. Zhonghua Yi Xue Za Zhi 2018; 97:1140-1144. [PMID: 28427119 DOI: 10.3760/cma.j.issn.0376-2491.2017.15.006] [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 explore genetic characteristic of posterior cranial fossa morphology in families of Chiari malformation type Ⅰ (CMI). Methods: From April 2010 to May 2016, a total of 47 cases of CMI families (CMI group) and their 94 parents (CMI-P group)collected were retrospectively reviewed in Department of Spinal Surgery, Drum Tower Hospital, School of Medicine, Nanjing University.Another cohort of 50 asymptomatic adults was enrolled to serve as the control group.Patients with skull fracture or other diseases which can lead to secondary CMI were excluded.On mid-sagittal T2-weighted magnetic resonance (MR) imaging, four measurements were evaluated and compared between these three groups, including the length of cerebellar tonsillar descent, the area of posterior cranial fossa(PCF area), the area of the brain tissue in posterior cranial fossa (PCF tissue area), and the PCF crowdedness indexes (PCF tissue area/ PCF area×100%). Results: Totally 47 CMI patients (21 males and 26 females; mean age, 16.4 years), 94 parents (47 males and 47 females; mean age, 39.2 years) and 50 controls (23 males and 27 females; mean age, 22.3 years) were recruited in this study.Significant differences in all four indexes were found between CMI group and the control group.The length of cerebellar tonsillar descent were much bigger in CMI-P group than in the control group (1.5±2.2 mm vs -0.9±1.1 mm), with 7 cases reach the diagnostic criteria of Chiari malformation(≥5 mm) and one with syingomyelia.Compared to the control group, CMI-P group had smaller PCF area, and its PCF crowdedness indexes averaged 90.0% as between the control group (85.3%) and the CMI group (93.6%). Conclusions: In CMI families, parents have similar posterior cranial fossa abnormalities with their CMI children, presenting obviously narrow and crowded.Their PCF crowdedness indexes are between normal subjects and CMI patients, and their cerebellar tonsils are lower, even some parents are also CMI patients, suggesting genetic mechanisms involved in the development of CMI.
Collapse
Affiliation(s)
- X X Yuan
- Department of Spinal Surgery, Drum Tower Hospital, School of Medicine, Nanjing University, Nanjing 210008, China
| | | | | | | | | | | | | | | |
Collapse
|
8
|
Guan HQ, Chen ZJ, Zhou Y, Liu J, Sun WX, Yuan J, Liao YH, Dong NG, Liu JP, Feng KG, Zhang Q, Zhao X, Qian C, Hu F. [Pre- and post-orthotopic heart transplantation electrocardiogram characteristics of 998 patients]. Zhonghua Xin Xue Guan Bing Za Zhi 2017; 45:299-306. [PMID: 28545281 DOI: 10.3760/cma.j.issn.0253-3758.2017.04.009] [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: 11/05/2022]
Abstract
Objective: To analyze pre- and post-operation electrocardiograms (ECGs) features of patients underwent orthotopic heart transplantation (OHT), and provide evidences for identifying and analyzing post OHT ECGs. Methods: Nine hundreds and ninty-eight pre- and post- OHT standard 12-leads ECGs from 110 consecutive patients, who underwent OHT in our hospital from May 2008 to May 2014, were analyzed. Results: The mean heart rate(HR)was (86.9±16.4) beats per minute before OHT, and (100.0±0.4) beats per minute after OHT. P wave's amplitude, duration, amplitude multiplied by duration of donor heart in lead Ⅱ were (0.124±0.069)mV, (111.1±17.2)ms, (14.34±9.51)mV·ms before OHT; (0.054±0.037)mV, (86.9±27.0)ms, (5.02±4.03)mV·ms at 1 month after OHT; (0.073±0.049)mV, (93.9±17.5) ms, (7.00±4.81)mV·ms at 6 years after OHT. ECGs rotation occurred in 83.64%(92/110) patients after OHT, and prevalence of clockwise rotation was 76.36%(84/110). Sinus tachycardia was evidenced in 99.09%(109/110) patients after OHT, and incomplete right bundle branch block was present in 60.91%(67/110) patients after OHT. Pseudo complete atrioventricular block mostly occurred at 2 days after OHT. Prevalence of double sinus rhythm was 27.95%(263/941) post OHT, 40% of them occurred between the 1st and the 2nd month post OHT; the atrial rate of recipient hearts was (104.0±10.2) beats per minucte between the 3rd and the 6th month post OHT, and was (95.3±4.2) beats per minucte between the 4th year and the 5th year. P wave's amplitude, duration, amplitude multiplied by duration of recipient heart in lead Ⅱ were (0.066±0.055) mV, (52.8±34.7) ms, (4.67±4.95) mV·ms at 1 month after OHT, (0.043±0.040)mV, (44.4±40.5) ms , (3.11±3.61) mV·ms between the 1st year and 2nd year after OHT. The absolute value of P-wave(originating from the donor heart) terminal force in chest leads increased in 48.99%(461/941) patients post OHT, the P-wave terminal force of V(1) , V(2) and V(3) were -0.044(-0.066, -0.028), -0.060(-0.087, -0.038), -0.035(-0.056, 0) mm·s. Notched P wave in chest leads was presented in 10.31%(97/941) patients post OHT. PR segment depression in chest leads occurred in 60.24%(100/166) patients between the 3rd month and the 6th month, the incidence of PR segment depression in V(1) , V(2) and V(3) was 21.04%(198/941), 37.41%(352/941) and 28.69%(270/941), respectively. Conclusions: OHT is related to significantly changed ECGs. The mean HR increased significantly after OHT, then decreased gradually after half a year to one year, but it was still higher than preoperative mean HR after five or six years; the P waves of donor heart were usually inconspicuous or small in first month after OHT, and they became bigger after 2 months, and their duration and amplitude then became relatively steady afterwards. ECGs rotation, especially the clockwise rotation, was common post OHT. A variety of arrhythmias originating from the donor heart including sinus tachycardia and incomplete right bundle branch block could be found. Pseudo complete atrioventricular block could also be found in the early phase after OHT. With the extension of time, the incidence of double sinus rhythm reduced gradually. The atrial rate and P wave of recipient heart presented with a tendency to become lower. The absolute value of P-waves(originating from the donor heart) terminal force in chest leads (mainly V(1), V(2) and V(3)) increased, notched P waves in chest leads (mainly V(1), V(2)) and PR segments depression in chest leads (mainly V(2), V(3) and V(4)) also belong to typical post OHT ECGs features.
Collapse
Affiliation(s)
- H Q Guan
- Department of Cardiology, Institute of Cardiovascular Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
9
|
Sun WX, Dodson MV, Jiang ZH, Yu SG, Chu WW, Chen J. Myostatin inhibits porcine intramuscular preadipocyte differentiation in vitro. Domest Anim Endocrinol 2016; 55:25-31. [PMID: 26657406 DOI: 10.1016/j.domaniend.2015.10.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Revised: 10/15/2015] [Accepted: 10/24/2015] [Indexed: 11/22/2022]
Abstract
This study assessed the effect of myostatin on adipogenesis by porcine intramuscular preadipocytes. Intramuscular preadipocytes were isolated from the longissimus dorsi muscle of newborn pigs. Myostatin inhibited intramuscular preadipocyte differentiation in a dose-dependent manner. Myostatin treatment during preadipocyte differentiation significantly (P < 0.05) inhibited the expression of the adipogenic marker genes CCAAT/enhancer-binding protein β, CCAAT/enhancer-binding protein α, peroxisome proliferator-activated receptor γ, sterol regulatory element-binding protein-1c, fatty acid-binding protein, and adiponectin. Myostatin also significantly (P < 0.05) reduced the release of glycerol and decreased both adipose triglyceride lipase and hormone-sensitive lipase expression in intramuscular adipocytes. Our study suggests that myostatin acts as an extrinsic regulatory factor in regulating intramuscular adipogenesis.
Collapse
Affiliation(s)
- W X Sun
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China; College of Public Health, Nantong University, Nantong, 226019, China
| | - M V Dodson
- Department of Animal Sciences, Washington State University, Pullman, WA, 99164-6351, USA
| | - Z H Jiang
- Department of Animal Sciences, Washington State University, Pullman, WA, 99164-6351, USA
| | - S G Yu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - W W Chu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - J Chen
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China.
| |
Collapse
|
10
|
Liu H, Zhong JL, Sun WX, Gong YQ, Liu LH. Crystal structure of 1,7,8,9-tetra-chloro-4-(3,5-di-chloro-benz-yl)-10,10-dimeth-oxy-4-aza-tri-cyclo-[5.2.1.0(2,6)]dec-8-ene-3,5-dione. Acta Crystallogr E Crystallogr Commun 2015; 71:o14-5. [PMID: 25705480 PMCID: PMC4331899 DOI: 10.1107/s2056989014025961] [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] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Accepted: 11/26/2014] [Indexed: 12/02/2022]
Abstract
In the title compound, C17H11Cl6NO4, the configuration of the cycloalkene skeleton is endo,cis. The benzene ring is twisted by 58.94 (8)° from the attached pyrrolidine ring. Two carbonyl groups play a key role in the crystal packing. A short intermolecular C⋯O distance of 3.017 (3) Å reveals that one carbonyl group is involved in dipole–dipole interactions, which link two adjacent enantiomers into an inversion dimer. Another carbonyl group provides an acceptor for the weak intermolecular C—H⋯O hydrogen bonds which link these dimers into layers parallel to (011).
Collapse
Affiliation(s)
- He Liu
- Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, People's Republic of China
| | - Jia-Liang Zhong
- Shanghai Institute of Pharmaceutical Industry, Shanghai 200040, People's Republic of China
| | - Wen-Xia Sun
- Shanghai Institute of Pharmaceutical Industry, Shanghai 200040, People's Republic of China
| | - Yan-Qing Gong
- State Key Laboratory of Bio-Organic & Natural Products Chmemistry, Shanghai Institute of Organic Chemistry, CAS., Shanghai 200032, People's Republic of China
| | - Li-Hong Liu
- Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, People's Republic of China
| |
Collapse
|
11
|
Sun WX, Chen YH, Liu ZZ, Xie JJ, Wang W, Du YP, Chen Y, Shen XL, He XF, Wu LX, Wei W, Zhang L. Association between the CYP1A2 polymorphisms and risk of cancer: a meta-analysis. Mol Genet Genomics 2014; 290:709-25. [PMID: 25472037 DOI: 10.1007/s00438-014-0956-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Accepted: 11/12/2014] [Indexed: 12/29/2022]
Abstract
The previously published data on the association between CYP1A2*1C (rs2069514) and CYP1A2*1F (rs762551) polymorphisms and cancer risk have remained controversial. Hence, we performed a meta-analysis to investigate the association between CYP1A2*1F and CYP1A2*1C polymorphisms and cancer risk under different inheritance models. Overall, significant association was observed between CYP1A2*1F and cancer risk when all the eligible studies were pooled into the meta-analysis (dominant model: OR 1.08, 95 % CI 1.02-1.15; heterozygous model: OR 1.06, 95 % CI 1.01-1.12; additive model: OR 1.07, 95 % CI 1.02-1.13). In the further stratified and sensitivity analyses, for CYP1A2*1F polymorphism, significantly increased lung cancer risk and significantly decreased bladder cancer risk were observed in Caucasians. For CYP1A2*1C polymorphism, no significant association was found in overall and all subgroup analyses. In summary, this meta-analysis suggests that CYP1A2*1F polymorphism is associated with lung cancer and bladder cancer risk in Caucasians.
Collapse
Affiliation(s)
- Wen-Xia Sun
- Department of Gynecology, Peace Hospital of Changzhi Medical College, Changzhi, Shanxi, 046000, People's Republic of China
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
12
|
Zhong JL, Sun WX, Zhang FL, Liu LH, Liu H. Ethyl 2-[6-(4-methyl-benzo-yl)-7-phenyl-2,3-di-hydro-1H-pyrrolizin-5-yl]-2-oxo-acetate. Acta Crystallogr Sect E Struct Rep Online 2013; 69:o1730. [PMID: 24454192 PMCID: PMC3885017 DOI: 10.1107/s1600536813029401] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Accepted: 10/25/2013] [Indexed: 05/28/2023]
Abstract
In the title compound, C25H23NO4, the pyrrolizine ring is approximately planar with an r.m.s deviation from planarity of 0.0053 Å, while the fused dihydropyrrolizine ring adopts an envelope conformation with the C atom connected to two CH2 as the flap. The dihedral angles between the fused ring system and the phenyl and methylbenzoyl rings are 41.65 (11) and 66.30 (8)°, respectively. In the crystal, weak C—H⋯O hydrogen bonds and C—H⋯π interactions occur. One molecule is linked to five adjacent ones through eight hydrogen bonds, forming a three-dimensional network.
Collapse
Affiliation(s)
- Jia-Liang Zhong
- Shanghai Institute of Pharmaceutical Industry, Shanghai 200040, China
| | - Wen-Xia Sun
- Shanghai Institute of Pharmaceutical Industry, Shanghai 200040, China
| | - Fu-Li Zhang
- Shanghai Institute of Pharmaceutical Industry, Shanghai 200040, China
| | - Li-Hong Liu
- Beijing Chao-Yang Hospital Affiliated with Beijing Capital, Medical University, Beijing 100020, China
| | - He Liu
- Beijing Chao-Yang Hospital Affiliated with Beijing Capital, Medical University, Beijing 100020, China
| |
Collapse
|
13
|
Liu YM, Zhong JL, Sun WX, Zhang FL, Liu H. (6,6-Dimethyl-1-phenyl-6,7-di-hydro-5H-pyrrolizin-2-yl)(thio-phen-2-yl)methanone. Acta Crystallogr Sect E Struct Rep Online 2013; 69:o1513. [PMID: 24098205 PMCID: PMC3790383 DOI: 10.1107/s1600536813023489] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Accepted: 08/21/2013] [Indexed: 11/17/2022]
Abstract
In the title compound, C20H19NOS, the pyrrolizine ring is essentially planar (r.m.s. deviation = 0.001 Å) while the fused dihydro-pyrrolizine ring adopts an envelope comformation with the C atom bearing the methyl substituents as the flap. The dihedral angles between the pyrrolizine and the phenyl and thiophene rings are 34.54 (7) and 44.93 (7)°, respectively. In the crystal, weak C—H⋯O hydrogen bonds link the molecules into infinite zigzag chains parallel to the b-axis direction.
Collapse
Affiliation(s)
- Yu-Min Liu
- College of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuan 050016, People's Republic of China
| | | | | | | | | |
Collapse
|
14
|
Zhou XL, Teng Y, Cao R, Fu H, Xiong K, Sun WX, Zhu CC, Huang XJ, Xiao P, Liu HL. Rescue from dominant follicle atresia by follicle-stimulating hormone in mice. Genet Mol Res 2013; 12:2945-52. [PMID: 24065650 DOI: 10.4238/2013.august.12.10] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [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 the effects of follicle-stimulating hormone (FSH) on atresia of the dominant follicle and changes in relevant apoptosis genes in granulosa cells of dominant follicles regulated by FSH in vivo. Four-week-old mice were administered FSH by intraperitoneal injection to induce follicular maturation. Granulosa cells of dominant follicles were collected at 48, 72, and 96 h after the first FSH injection. Phosphate-buffered saline was injected as a control. The mRNA levels of relevant granulosa cell apoptosis genes were examined by real-time quantitative polymerase chain reaction, and apoptosis of granulosa cells in dominant ovarian follicles was determined by the terminal deoxynucleotidyl transferase dUTP nick-end labeling (TUNEL) assay. Apoptosis in granulosa cells of dominant follicles was almost TUNEL-negative at 48, 72-66, 72, and 96-90 h after the first FSH injection, but granulosa cell apoptosis in dominant follicles was clearly detected at 96, 102, and 102-96 h by TUNEL. The BIM, caspase-3, and caspase-9 mRNA expression levels were significantly lower after FSH treatment at 72-66 and 96-90 h, compared with that at 72 and 96 h (P < 0.05). Caspase-8 and FasL mRNA expressions did not respond to FSH. FSH rescued granulosa cells from apoptosis when the relevant apoptosis genes were upregulated in early atretic follicles. FSH did not rescue granulosa cells from apoptosis if the DNA was cut into fragments by endonucleases. Thus, the rescue by FSH of granulosa cells from apoptosis and dominant follicle atresia may be accomplished by inhibition of apoptosis in mitochondria.
Collapse
Affiliation(s)
- X L Zhou
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | | | | | | | | | | | | | | | | | | |
Collapse
|
15
|
Zhong JL, Sun WX, Zhang FL, Liu LH, Liu H. Methyl 3-[(chloromethoxy)carbonyloxy]-7-hydroxycholan-24-oate. Acta Crystallogr Sect E Struct Rep Online 2013; 69:o1186. [PMID: 24046725 PMCID: PMC3770440 DOI: 10.1107/s160053681301725x] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2013] [Accepted: 06/22/2013] [Indexed: 11/10/2022]
Abstract
The title compound, C27H43ClO6, is a derivative of ursodeoxycholic acid, in which the OH group at the 3-position is substituted by a chloromethoxycarbonyloxy substituent and the carboxylic acid group at the 24-position is methylated. The A and B rings are cis-fused, while all other rings are trans-fused. In the crystal, two adjacent molecules located along the b-axis direction are interlocked head-to-tail due to weak C—H⋯O hydrogen bonds. Therefore each molecule is linked to four neighbouring molecules by four C—H⋯O hydrogen bonds, with the OH group at the 7-position and the carbonyl O atom of the ester group acting as the acceptor sites.
Collapse
|
16
|
Sun WX, Yuan SS, Huang QY, Peng F, Liu NM, Yang SQ. [Study on liver injury of Oncomelania hupensis caused by Eomecon chinanthe sanguinarine]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2011; 23:82-84. [PMID: 22164384] [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: 05/31/2023]
Abstract
OBJECTIVE To analyze the effects of Eomecon chinanthe sanguinarine (SAN) on glucogen, enzyme activity and lipid peroxidation of Oncomelania hupensis liver so as to explore the mechanism of SAN against Oncomelania hupensis. METHODS SAN was extracted and purified from the dry powder of Eomecon chionantha. Oncomelania hupensis were immersed in 5 mg/L sanguinarine (50 Oncomelania hupensis per 500 ml solution) or clean water at 25 degrees C for 36 h, the livers were isolated from live snails. Total glucogen content, malondialdehyde (MDA) level, activities of alanine aminotransferase (ALT), aspartate aminotransferase (AST), acid phosphatase (ACP), alkaline phosphatase (AKP), superoxide dismutase (SOD), peroxidase (POD) were determined respectively and the data were analyzed by independent t test. RESULTS The glucogen content of snail livers in the SAN group and the control group were (12.151 +/- 0.204) and (18.113 +/- 0.163) mg/g respectively, the difference between the two groups was significant (P < 0.05); the MDA levels of the two groups were (5.298 +/- 0.441) and (4.351 +/- 0.197) nmol/mgprot respectively, and the difference was not significant (P > 0.05); the activities of ALT, AST, ACP, AKP, SOD in the SAN group were (2.760 +/- 0.076) U/mgprot, (68.723 +/- 2.295) U/mgprot, (407.949 +/-19.868) U/gprot, (191.287 +/- 0.771) U/ gprot and (48.452 +/- 0.193) U/mgprot respectively, the activities of these enzymes in the control group were (1.104 +/- 0.000) U/mgprot, (49.448 +/- 1.626) U/mgprot, (344.475 +/- 30.186) U/gprot, (121.905 +/- 3.127) U/gprot and (38.814 +/- 2.765) U/mgprot respectively, the activities of ALT, AST, ACP, AKP and SOD were significantly increased after immersed in 5 mg/L SAN for 36 h, the differences were significant (All P values < 0.05); yet the difference of POD between the SAN group [(22.170 +/- 0.018) U/mgprot] and the control group [(21.747 +/- 0.264) U/mgprot] was not significant (P > 0.05). CONCLUSION SAN can destroy liver functions of Oncomelania hupensis through decreasing glucogen content and changing activities of some important enzymes in snail liver.
Collapse
Affiliation(s)
- Wen-Xia Sun
- Department of Laboratory Medicine, Medical College in Hunan Normal University, Changsha 410013, China
| | | | | | | | | | | |
Collapse
|
17
|
Cai SL, Chen Y, Sun WX, Li H, Chen Y, Yuan SS. 2-, 3-, and 4-(1-Oxo-1H-2,3-dihydroisoindol-2-yl)benzoic acids and their corresponding organotin carboxylates: Synthesis, characterization, fluorescent, and biological activities. Bioorg Med Chem Lett 2010; 20:5649-52. [DOI: 10.1016/j.bmcl.2010.08.034] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2010] [Revised: 07/24/2010] [Accepted: 08/06/2010] [Indexed: 11/30/2022]
|
18
|
Yu DS, Shi XZ, Wang HJ, Sun WX, Chen JM, Liu QH, Zhao YC. Regional patterns of soil organic carbon stocks in China. J Environ Manage 2007; 85:680-9. [PMID: 17126986 DOI: 10.1016/j.jenvman.2006.09.020] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2005] [Revised: 09/08/2006] [Accepted: 09/19/2006] [Indexed: 05/12/2023]
Abstract
Soil organic carbon (SOC) is of great importance in the global carbon cycle. Distribution patterns of SOC in various regions of China constitute a nation-wide baseline for studies on soil carbon changes. This paper presents an integrated and multi-level study on SOC stock patterns of China, and presents baseline SOC stock estimates by great administrative regions, river watersheds, soil type regions and ecosystem. The assignment is done by means of a recently completed 1: 1,000,000 scale soil database of China, which is the most detailed and reliable one in China at the present time. SOC densities of 7292 soil profiles collected across China in the middle of the 1980s were calculated and then linked to corresponding polygons in a digital soil map, resulting in a SOC Density Map of China on a 1: 1,000,000 scale, and a 1 km x 1 km grid map. Corresponding maps of administrative regions, river watersheds, soil types (ST), and ecosystems in China were also prepared with an identical resolution and coordinate control points, allowing GIS analyses. Results show that soils in China cover an area of 9.281 x 10(6)km(2) in total, with a total SOC stock of 89.14 Pg (1 Pg=10(15)g) and a mean SOC density of 96.0 t C/ha. Confidence limits of the SOC stock and density in China are estimated as [89.23 Pg, 89.08 Pg] and [96.143 t C/ha, 95.981 t C/ha] at 95% probability, respectively. The largest total SOC stock (23.60 Pg) is found in South-west China while the highest mean SOC density (181.9 t C/ha) is found in north-east China. The total SOC stock and the mean SOC density in the Yangtze river watershed are 21.05 Pg and 120.0 t C/ha, respectively, while the corresponding figures in the Yellow river watershed are 8.46 Pg and 104.3 t C/ha, respectively. The highest total SOC stocks are found in Inceptisols (34.39 Pg) with SOC density of 102.8 t C/ha. The lowest and highest mean SOC densities are found on Entisols (28.1 t C/ha), and on Histosols (994.728.1 t C/ha), respectively. Finally, the total SOC stock in shrub and forest ecosystem classes are 25.55 and 21.50 Pg, respectively; the highest mean SOC density (209.9 t C/ha) was recorded in the wetland ecosystem class and the lowest (29.0 t C/ha) in the desert ecosystem class. Among five forest ecosystem types, Evergreen conifer forest stores the highest SOC stock (6.81 Pg), and Deciduous conifer forest shows the highest SOC density (225.9 t C/ha). Figures of SOC stocks stratified by Administrative regions, river watersheds, soil types and ecosystem types presented in the study may constitute national-wide baseline for studies of SOC stock changes in various regions in the future.
Collapse
Affiliation(s)
- D S Yu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China.
| | | | | | | | | | | | | |
Collapse
|
19
|
Abstract
The combination of near-field scanning optical microscopy and Raman spectroscopy provides chemical/structural specific information with nanometer spatial resolution, which are critically important for a wide range of applications, including the study of Si devices, nanodevices, quantum dots, single molecules of biological samples. In this paper, we describe our near-field Raman study using apertureless probes. Our system has two important features, critical to practical applications. (1) The near-field Raman enhancement was achieved by Ag coating of the metal probes, without any preparation of the sample, and (2) while all other apertureless near-field Raman systems were constructed in transmission mode, our system works in the reflection mode, making near-field Raman study a reality for any samples. We have obtained the first 1D Raman mapping of a real Si device with 1s exposure time. This is a very significant development in near-field scanning Raman microscopy as it is the first demonstration that this technique can be used for imaging purpose because of the short integration time. In addition, the metal tips used in our set-up can be utilized to make simultaneous AFM and electrical mappings such as resistance and capacitance that are critical parameters for device applications.
Collapse
Affiliation(s)
- W X Sun
- Physics Department, National University of Singapore, 2 Science Drive 3, 117542, Singapore, Singapore
| | | |
Collapse
|