2.Effects of exhaustive exercise-induced oxidative stress on red blood cell deformability.
Yan-Lian XIONG ; Yan-Lei XIONG ; Yao-Jin LI ; Fu-Zhou TANG ; Ruo-Feng WANG ; Ya-Jin ZHAO ; Xiang WANG
Chinese Journal of Applied Physiology 2014;30(4):289-293
OBJECTIVEThe aim of the present study is to explore the effects of exhaustive exercise-induced oxidative stress on the antioxidant capacity and diformability of rat red blood cells.
METHODSRats were divided into three group (n = 10): sedentary control (C), exhaustive running exercise (ERE) and moderate running exercise (MRE) groups. Animals in the ERE group started treadmill running at a speed of 20 m/min speed with a 5% gradient, and reached a speed of 25 m/min with gradient 15% in 20 min. Running was continued until exhaustion. MRE group rats running at a speed of 20 m/min with a 5% gradient for 40 min. The levels of free thiol in erythrocyte membrane protein, lipidperoxidation levels and membrane protein components were analyzed. The red blood cell deformability of different groups was also observed.
RESULTSThe results showed that red blood cells were damaged by severe oxidative stress and the anti-oxidative capacity decreased significantly under exhaustive exercise conditions. Besides, lipid peroxidation and protein sulfhydryl cross-link based clustering of membrane were found after exhaustive exercise, and polymers high molecular weight (HMW) was formed. The elongation index (EI) was found to decline significantly in the ERE group compared with the C and MRE groups under shear stress (control group, 0.41 +/- 0.01 at 3 Pa and 0.571 +/- 0.008 at 30 Pa; ERE group, 0.314 +/- 0.013 at 3 Pa and 0.534 +/- 0.009 at 30 Pa; P < 0.05 and P < 0.01, respectively).
CONCLUSIONThese exercise-induced oxidative injure result in a significant decrease in deformability of rat erythrocytes, which in turn leads to dysfunction in the microcirculatory.
Animals ; Disease Models, Animal ; Erythrocyte Deformability ; Fatigue ; metabolism ; physiopathology ; Male ; Oxidative Stress ; Physical Conditioning, Animal ; Rats ; Rats, Sprague-Dawley
3.A propensity score-matched study on the association between first trimester pregnancy infection and congenital malformation in the cardiovascular system
Pengfei QU ; Yang MI ; Yaqin WANG ; Hui YAN ; Hui MA ; Jiamei LI ; Ruo ZHANG ; Shaonong DANG ; Hong YAN
Journal of Xi'an Jiaotong University(Medical Sciences) 2017;38(3):348-352
Objective To explore the relationship between first trimester pregnancy infection and congenital malformation in the cardiovascular system.Methods A hospital-based study was conducted from June 2014 to June 2016.Totally 1618 mothers of infants with cardiovascular system malformation and normal infants were interviewed through a face-to-face questionnaire survey.A propensity score-matched study was conducted to investigate the association between first trimester pregnancy infection and congenital malformation in the cardiovascular system.Results All important covariates were balanced after matching.First trimester pregnancy infection increased the risk of congenital malformation in the cardiovascular system,single congenital malformation in the cardiovascular system and multi-congenital malformation in the cardiovascular system.After matched,the OR values were 1.65 (95% CI:1.21-2.24;P=0.001),1.50 (95% CI:1.02 2.20;P=0.037),and 1.90 (95% CI:1.18-3.06;P=0.008),respectively.Conclusion First trimester pregnancy infection increases the risk of congenital malformation in the cardiovascular system.Avoiding infectious diseases during the first trimester in pregnancy is important in decreasing the incidence of congenital malformation in the cardiovascular system.
4.Generalized linear model analysis of the relationship of four kinds of prenatal lifestyle factors and congenital heart disease
Ruo ZHANG ; Hui MA ; Hui YAN ; Yaqin WANG ; Yang MI ; Fangyao CHEN ; Pengfei QU ; Shanshan LI ; Shaonong DANG ; Hong YAN
Journal of Xi'an Jiaotong University(Medical Sciences) 2017;38(3):332-336
Objective To explore the relationship of four kinds of lifestyle factors,namely,prenatal passive smoking,hair dyeing or perming,exposure to noise,living in a house renovated in the past one year,with congenital heart disease.Methods A hospital-based case-control study was conducted.Totally 270 mothers in the case group and 1633 mothers in the control group were interviewed through a face-to-face questionnaire survey.A generalized linear model was employed to investigate the association between congenital heart disease and prenatal lifestyle factors.Results Both in Model 1 and Model 2,prenatal hair dyeing or perming had no association with congenital heart disease.On the other hand,prenatal passive smoking,exposure to noise and living in a house renovated in the past one year all increased the risk of congenital heart disease.After adjustment for all confounders,the OR values were 1.771 (95% CI:1.079-2.909),2.079 (95% CI:1.310-3.298),and 2.494 (95% CI:1.511-4.116),respectively.Conclusion Prenatal passive smoking,exposure to noise and living in a house renovated in the past one year are the risk factors for congenital heart disease.It is very important to avoid such factors during pre-pregnancy and pregnancy.
5.Flavonoids from the seeds of Alpinia galanga Willd.
Meng-Qin BIAN ; Hong-Qing WANG ; Jie KANG ; Ruo-Yun CHEN ; Yan-Fang YANG ; He-Zhen WU
Acta Pharmaceutica Sinica 2014;49(3):359-362
Ten flavonoids were isolated from the 95% ethanol extract of the seeds of Alpinia galanga Willd. with a combination of various chromatographic techniques, including silica gel, Sephadex LH-20 and preparative HPLC. On the basis of spectroscopic data analysis, they were elucidated as (2R, 3S)-pinobaksin-3-cinnamate (1), (2R, 3R)-pinobaksin-3-cinnamate (2), pinocembrin (3), pinobaksin (4), 3-O-acetylpinobaksin (5), galangin (6), galangin-3-methylether (7), kumatakenin (8), 3-methylkaempferol (9) and (2R, 3R)-3, 5-dihydroxy-7-methoxyflavanone (10). Among them, compound 1 is a new compound, compounds 2, 5 and 10 were isolated from the genus Alpinia for the first time, and others were isolated from this plant for the first time.
Alpinia
;
chemistry
;
Benzopyrans
;
chemistry
;
isolation & purification
;
Cinnamates
;
chemistry
;
isolation & purification
;
Flavanones
;
chemistry
;
isolation & purification
;
Flavonoids
;
chemistry
;
isolation & purification
;
Kaempferols
;
chemistry
;
isolation & purification
;
Molecular Structure
;
Plants, Medicinal
;
chemistry
;
Seeds
;
chemistry
6.Neuroprotective effects of the effective components group of xiaoshuantongluo against oxygen-glucose deprivation in primary cultured rat cortical neurons.
Xin-Mei XIE ; Xiao-Bin PANG ; Yan ZHAO ; Bao-Quan WANG ; Ruo-Yun CHEN ; Guan-Hua DU
Acta Pharmaceutica Sinica 2014;49(8):1130-1135
This study is to investigate the effect of the effective components group of Xiaoshuantongluo (XECG) on neuronal injury induced by oxygen-glucose deprivation (OGD) in primary cortical cultures isolated from SD rat cortex at day 3 and the possible mechanism. Cells were divided into control group, OGD model group and XECG group (1, 3 and 10 mg x L(-1)). The cell viability was assessed with MTT assay and the LDH release rate was measured by enzyme label kit. The cell apoptosis was analyzed using Hoechst staining. RT-PCR was applied to detect the mRNA levels of JAK2 and STAT3. Western blotting was used to detect the expressions of Bcl-2, Bax, p-JAK2 and p-STAT3 proteins. Results showed that XECG resulted in an obvious resistance to oxygen-glucose deprivation-induced cell apoptosis and decrement of cell viability, decrease the cell LDH release rate. XECG could adjust the expression of Bcl-2 and Bax proteins and increase Bcl-2/Bax ratio, up-regulate the expression of p-JAK2 and p-STAT3. In conclusion, XECG could protect against the neuronal injury cells exposed to OGD, which may be relevant to the promotion of JAK2/STAT3 signaling pathway, and impact the expression of Bax and Bcl-2.
Animals
;
Apoptosis
;
Cell Survival
;
Cells, Cultured
;
Drugs, Chinese Herbal
;
pharmacology
;
Glucose
;
Janus Kinase 2
;
metabolism
;
Neurons
;
drug effects
;
metabolism
;
Neuroprotective Agents
;
pharmacology
;
Oxygen
;
Proto-Oncogene Proteins c-bcl-2
;
metabolism
;
Rats
;
STAT3 Transcription Factor
;
metabolism
;
Signal Transduction
;
bcl-2-Associated X Protein
;
metabolism
7.Relationship among ALDH2 gene polymorphism, alcohol metabolism and acetaldehyde level in peripheral blood.
Hui XIONG ; Wei WANG ; Yi YE ; You-Yi YAN ; Min XIAO ; Ruo-Yun RUAN ; Lin-Chuan LIAO
Journal of Forensic Medicine 2014;30(1):31-35
OBJECTIVE:
To explore alcohol pharmacokinetics as well as acetaldehyde level in peripheral blood in human subjects with different ALDH2 genotypes after drinking.
METHODS:
Venous blood samples of 14 unrelated volunteers were collected. Polymerase chain reaction-restriction fragment length polymorphism technology was adopted for DNA extraction and ALDH2 genotyping. The volunteers were asked to drink beer at certain doses. The concentration of alcohol and acetaldehyde were assayed by headspace gas chromatography method at different time. The pharmacokinetic parameters were calculated.
RESULTS:
According to the results of electrophoresis, 5 people carried ALDH2*1/*1 as wild group and 9 people carried ALDH2*1/*2 as mutation group. The good linear range of alcohol and acetaldehyde were 0-1 570.7 microg/mL and 0-5.1772 microg/mL, respectively. The AUC values of alcohol and acetaldehyde and the t1/2Z value of alcohol were higher in the mutation group than that in the wild group. But the CL/F value of alcohol was lower in the mutation group than that in the wild group (P<0.05).
CONCLUSION
After the consumption of alcohol, alcohol and acetaldehyde metabolism in blood slow down in ALDH2*1/*2 mutation group influenced by the inhibition of enzyme activity, leading to the accumulation of acetaldehyde in peripheral blood, thus reinforcing their effects in the body.
Alcohol Drinking
;
Aldehyde Dehydrogenase/genetics*
;
Aldehyde Dehydrogenase, Mitochondrial
;
Ethanol/metabolism*
;
Genotype
;
Humans
;
Polymerase Chain Reaction
;
Polymorphism, Genetic
8.Controlled study on acupuncture for treatment of endocrine dysfunctional infertility.
Ji-Ruo YANG ; Yan-Yan MA ; Ya-Li LIU ; Hui-Ling WANG ; Zhen LIU
Chinese Acupuncture & Moxibustion 2005;25(5):299-300
OBJECTIVETo compare therapeutic effects of acupuncture and Western medicine for promoting ovalation on endocrine dysfunctional infertility.
METHODSTwo hundred and forty cases of infertility were randomly divided into an acupuncture group (n = 160) and a Western medicine group (n = 80). They were treated with acupuncture and clomiphene respectively and their therapeutic effects were compared.
RESULTSThe pregnancy rate was 65.0% in the acupuncture group and 45.0% in the Western medicine group with a significant difference between the two groups (P < 0.05).
CONCLUSIONAcupuncture can cure endocrine dysfunctional infertility.
Acupuncture Points ; Acupuncture Therapy ; Clomiphene ; Humans ; Infertility ; Medicine, Chinese Traditional ; Pregnancy Rate
9.Flavonol glycosides from Lysimachia clethroides.
Dong LIANG ; Yan-Fei LIU ; Zhi-You HAO ; Huan LUO ; Yan WANG ; Chun-Lei ZHANG ; Qing-Jian ZHANG ; Ruo-Yun CHEN ; De-Quan YU
China Journal of Chinese Materia Medica 2015;40(1):103-107
Eleven flavonol glycosides were isolated from the ethanol extract of Lysimachia clethroides by a combination of various chromatographic techniques including column chromatography over silica gel, Sephadex LH-20, and reversed-phase HPLC. Their structures were identified as astragalin (1), isoquercitrin (2), isorhamnetin-3-O-β-D-glucopyranoside (3), quercetin-3-O-β-D-6"-acetylglucopyranoside (4), quercetin-7-O-β-D-glucopyranoside (5), prunin (6), 2-hydroxynaringin-5-O-β-D-glucopyranoside (7), kaempferol-3-O-rutinonoside (8), kaempferol-3-O-robinobioside (9), rutin (10) and kaempferol-3,7-di-O-β-D-glucopyranoside (11). Among them, compounds 4, 7 and 11 were obtained from the Lysimachia genus for the first time, while compounds 3, 5 and 9 were firstly reported from this plant. In the preliminary assays, compounds 2, 6 and 8 possessed significant inhibition against aldose reduc- tase, with IC50 values of 2.69, 1.00, 1.80 μmol · L(-1), respectively; none of compounds 1-11 exhibited obvious cytotoxic activity (IC50 > 10 μmol · L(-1)).
Drugs, Chinese Herbal
;
chemistry
;
Flavonols
;
chemistry
;
Glycosides
;
chemistry
;
Molecular Structure
;
Primulaceae
;
chemistry
;
Spectrometry, Mass, Electrospray Ionization
10.Neurogenesis of dentate granule cells following kainic acid induced seizures in immature rats.
Yan-Ling WANG ; Ruo-Peng SUN ; Ge-Fei LEI ; Ji-Wen WANG ; Shu-Hua GUO
Chinese Journal of Pediatrics 2004;42(8):621-624
OBJECTIVEData accumulated over the past years have led to widespread recognition that neurogenesis, the emergence of new neurons, persists in the hippocampal dentate gyrus of the adult mammalian brain, and can be increased by seizures in multiple models. Also, aberrant reorganization of dentate granule cell axons, the mossy fiber sprouting, occurs in human temporal lobe epilepsy and rodent epilepsy models. However a number of studies suggest that the immature brain is less vulnerable to the morphologic alteration of hippocampus after seizures. The goal of this study was to determine whether the seizures can induce dentate granule cell neurogenesis and mossy fiber sprouting in the immature rat.
METHODSSeizures was elicited by unilateral microinfusion of kainic acid (KA, 1 micro g) into the amygdula at postnatal day 15 (P15). Rat pups were given bromodeoxyuridine (BrdU) intraperitoneally on day 5 after KA administration and killed 7 d or 21 d later. The brains were processed for BrdU mitotic labeling combined with double-label immunohistochemistry using neuron-specific, early differentiation marker TuJ1 (betaIII tubulin) or granule-specific marker CaBP (calcium-binding protein calbindin D28k) as well as glia-specific marker GFAP (glial fibrillary acidic protein). Mossy fiber sprouting in intermolecular layer and CA3 subfield was assessed in Timm-stained sections both 1 month and 3 months after KA administration by using a rating scale and density measurement.
RESULTSThe dentate BrdU-immunoreactive cells of the KA-treated rats increased significantly compared with those of control rats on day 7 and 21 after BrdU administration (7 d: 244 +/- 15 vs. 190 +/- 10; 21 d: 218 +/- 19 vs. 133 +/- 12, P < 0.05). Approximately 80.2% and 78.7% of BrdU-labeled cells coexpressed TuJ1 in KA-treated rats and control rats on day 7 after BrdU respectively (P > 0.05). On 21 d after BrdU, 60.2% and 58.2% of dentate BrdU-labeled cells coexpressed GaBP in KA-treated rats and control rats respectively (P > 0.05). GFAP colocalized with 3%-5% dentate BrdU-labeled cells in the rats of both groups on day 7 and 21 after BrdU. It was also demonstrated that status epilepticus at P15 did not result in any detectable mossy fiber sprouting within the hippocampus both 1 month and 3 months after KA administration.
CONCLUSIONSKA induced seizures can increase granule cell neurogenesis in the immature rat. Most of newly appeared cells migrate from subgranular proliferation zone (SGZ) into granule cell layer, the hilus as well as the molecular layer, and there they can differentiate into granule neurons. These observations also indicate that there is an early developmental resistance to seizure-induced mossy fiber sprouting in the immature brain.
Animals ; Cell Differentiation ; Cell Proliferation ; Dentate Gyrus ; cytology ; physiopathology ; Disease Models, Animal ; Excitatory Amino Acid Agonists ; adverse effects ; Kainic Acid ; adverse effects ; Mossy Fibers, Hippocampal ; physiopathology ; Neurogenesis ; physiology ; Rats ; Seizures ; chemically induced ; physiopathology