Objective To investigate the beneficial effects and possible mechanisms of intrathecal injection of dexmedetomidine (DEX) in protection of spinal cord ischemia-reperfusion injury.Methods Spinal cord ischemia-reperfusion injury was induced in rabbits by infrarenal aortic occlusion for 30 minutes.Twenty-four rabbits were randomly divided into four groups:sham group,I/R group,DEX group (1 μg/kg dexmedetomidine by intrathecal injection),DEX + ATIP group (1 μg/kg dexmedetomidine and 0.5 μg/kg atipamezole (ATIP) by intrathecal injection).Physiological indices were assessed and motor neurons in the ventral gray matter were counted by histological examination.The expression of total extracellular signal-related kinase (t-ERK),phospho-extracellular signal-related kinase (p-ERK),and caspase 3 were assessed by Western blotting and real-time polymerase chain reaction (RT-PCR).The water content in spines was also measured.Results Intrathecal injection of dexmedetomidine minimized the neuromotor dysfunction and histopathological deficits(F =14.32,P ＜ 0.05) and attenuated the influences of peroxidation at 24 hours after spinal cord ischemia-reperfusion injury.The physical indices during experiment were comparable among all groups.In addition,intrathecal injection of dexmedetomidine reduced the excessive expression of caspase 3 mediated by ERK signal pathway(F =15.45,P ＜ 0.05).Conclusions Pre-emptive intrathecal injection of dexmedetomidine produced beneficial effects on spinal cord after spinal cord ischemia-reperfusion injury in a rabbit model of transient aortic occlusion.This beneficial effect was partly attributed to the inhibition of caspase 3 mediated by ERK signal pathway,which represents a potential therapeutic approach to mitigate spinal cord injury after aortic occlusion.

In this study,we constructed 2 eukaryotic expressing plasmids namely pcS2?S and pFP,encoding HBV preS2+S envelope protein and human IL 2/IFN ? fusion protein, respectively. The double plasmid fusion protein was used as an adjuvant in preparation of a treatment type HBV gene vaccine. To investigate its feasibility for use as a therapeutic DNA vaccine, we've evaluated the immune response after injection into healthy mice, HBV transgenic(Tg) mice, New Zealand rabbits and Rhesus monkeys. The results showed that the therapeutic DNA vaccine can improve: (1)the CTL activity; (2)the HBsAg(30?g/ml) specific T lymphocyte proliferation in which the stimulation index(SI) and cytokines(IL 2/IFN r) release levels of the pS2.S immunized group(SI=5.6?0.9; 226.3?41.1/51.1?7.1pg/ml) were significantly higher( P

The peptides from HBV cytotoxic T lymphocyte(CTL) epitope were used to either stimulate or impact the immune effector (E) or CTL target (T) cells respectively, in order to investigate the cellular immune response induced by DNA vaccination in both healthy and HBV transgenic (Tg) mice. It was found that HBV DNA based immunization could induce CTL activity in healthy BALB/c mice, with intensity correlated with the E/T ratio and IFN ? secretion level in its supernatants. The target cells hit by HBsAg CTL epitope peptide(pp20) could be lysed by the active CTL induced by HBV DNA vaccine encoding preS2 and HBsAg, while the cell lysis could not be observed in the target cells impacted by the HBcAg CTL epitope peptide (pp10). The supernatant IL 12 secretion level (211 3?39 8pg?ml -1 ) in the DNA vaccination group was significantly( P

Objective To discuss the distribution of traditional Chinese medicine (TCM) syndromes of patients with congestive heart failure (CHF) commonly seen in clinic based on data mining technology.Methods A multicenter study was conducted. 1 451 in-patients with CHF in 4 grade Ⅲ hospitals from December 2010 to September 2012 were enrolled. The cluster and factor methods were applied to synthetically analyze the data concerning the patients' information of four diagnostic methods in TCM, and the TCM syndromes commonly seen in patients with CHF and the preliminary diagnostic scheme were summarized.Results In these 1 451 cases, there were 43 items having been experienced standardization, including clinical symptoms and manifestations of tongue and pulse, and in the information concerning four diagnosis in TCM, there were 14 items whose incidences > 10%. The incidence of chest distress was the highest 89.18% (1 294 cases), followed by shortness of breath 66.16% (960 cases), and the lowest constipation 12.20% (177 cases). There were 4 commonly seen syndromes of CHF as follows: qi deficiency blood stasis syndrome (the major diagnostic bases: palpitation, shortness of breath, dark and red tongue with white fur, thin pulse; and the minor bases: chest distress and thin fur), yang deficiency water diffusion syndrome (major bases: edema of lower limbs, cough, expectoration, difficult urination, chilly, poor appetite, greasy fur, string pulse; minor bases: body strength weakness), phlegm heat obstructing lung syndrome (major bases: chest pain, cough and dyspnea in semi-reclining position, constipation, light tongue with yellow fur, deep, slippery or rapid pulse; minor bases: dizziness), and qi yin deficiency blood stasis syndrome (major bases: dry mouth, night sweating, frequent urination at night, teeth-marked tongue, purplish tongue, uneven or irregular pulse; minor bases: loose stool, headache, purplish lips, swollen tongue with little fur, moderate or weak pulse). The load intervals of each of the symptoms in CHF qi deficiency blood stasis syndrome were from -0.520 to 0.881, all the absolute values were greater than 0.520, and the common degrees extracted were 64.3% - 83.6%, which meant the 5 common factors could extract the original index information all over the common degree 64.3%. In yang deficiency water diffusion syndrome, the load intervals of each of symptoms were from0.732 to 0.983, all the absolute values were greater than 0.732, and the common degrees extracted were 58.2% - 96.9%; in phlegm heat obstructing lung syndrome, the load intervals of each of symptoms were 0.670 - 0.992, the all absolute values were greater than 0.670, and the common degrees extracted were 52.0% - 98.5%. In qi yin deficiency blood stasis syndrome, the load intervals of each of symptoms were 0.576 - 0.926, all the absolute values were greater than 0.576, and the common degrees extracted were 54.2% - 87.1%.Conclusion By application of data mining technology combined with clinical practice, the common TCM syndromes of patients with CHF can be analyzed objectively and comprehensively.

The adenosine triphosphate (ATP)-binding cassette transporter G1 (ABCG1),a member of the superfamily of ATP-binding cassette transporters,is involved in the efflux of cholesterol and phospholipids from cells,and it maintains the intracellular hpid homeostasis.ABCG1 deficiency results in foam cell formation,endothelial dysfunction,and inflammatory reaction,and it further leads to the development and progression of atherosclerosis.However,the role of ABCG1 in atherosclerosis in animal experiments and human studies is still a debatable matter.In this paper,the recent findings on the role of ABCG1 in atherosclerotic disease are reviewed.

Objective To explore the status of reproductive health of women at the reproductive age.Method A self-designed questionnaire was used among 960 married women at the reproductive age to investigate the health status.Results The women(59.8%)had an abnormal pregnant history.The reproductive diseases in them were mainly cervicitis(11.6%),pelvic inflammatory disease(5.4%)and uterine fibroids(4.0%).Thirty-one point one perent of them knew well about their fertile time, 58.6%of them wanted most to know the choice of contraception,and 30.0%obtained the knowledge on female reproductive health knowledge from the hospitals.Conclusion Such measures as doing health education in various ways,strengthening the reproductive health knowledge and enhancing the knowledge of contraception are important for the improvement of the reproductive health knowledge.

Objective: To evaluate the recent efficacy and safety of gemcitabine combined with S-1 in the treatment of advanced biliary tract cancer. Methods: From August 2014 to May 2017, 27 patients with advanced biliary tract cancer confirmed by pathology in the First People's Hospital of Zhengzhou received gemcitabine(1 000mg/m², day 1 and 8) and S-1(80mg/m², day 1-14) every three weeks.The recent efficacy and toxicities were observed after two cycles of chemotherapy. Results: All of the 27 patients were evaluated, 1 patient(3.7%) achieved CR, 6 patients(22.2%) with PR, 12 patients(44.4%) with SD, 8 patients(29.6%) with PD.The total response rate was 25.9%(7/27), the disease control rate was 70.4%(19/27). The main toxicities were gastrointestinal reactions and myelosuppression, no chemotherapy-related death was observed. Conclusion Gemcitabine combined with S-1 in the treatment of advanced biliary tract cancer is safe and effect.

Objective:To investigate the relationship between positive asthma prediction index (API) and single nucleotide polymorphisms (SNPs) of interleukin (IL-13), IL-4, β 2 adrenergic receptor (ADRB2), and type I Fc ε receptor β (FcER1B) genes in asthmatic children.Methods:A prospective study was conducted on 102 asthmatic children under 5 years old admitted to Zhongshan Boai Hospital and Foshan First People′s Hospital (51 cases were API positive and 51 cases were API negative) from January 2020 to August 2023. Oral and buccal mucosal exfoliated cells were collected from the children, and genomic DNA was extracted using magnetic bead method. Four gene loci (IL-13 rs20541, IL-4 rs2243250, ADRB2 rs1042713, FcER1B rs569108) were genotyped using a matrix assisted laser desorption ionization time-of-flight mass spectrometer. Logistic regression analysis was used to evaluate the correlation between SNP typing at these four gene loci and API positivity in asthmatic children.Results:There was a statistically significant difference in the SNP typing and allele distribution frequency of IL-13 rs20541, IL-4 rs2243250, ADRB2 rs1042713, FcER1B rs569108 between the API positive and API negative groups of wheezing children (all P<0.05). Among API positive children, the proportion of IL-13 rs20541 site was higher in GG type, the proportion of IL-4 rs2243250 site was higher in TT type, the proportion of ADRB2 rs1042713 site was higher in AG type, and the proportion of FcER1B rs569108 site was higher in AA type; The results of logistic regression analysis showed that IL-13 rs20541 GG type, IL-4 rs2243250 TT type, FcER1B rs569108 AA type were associated with the risk of API positivity in asthmatic children (all P<0.05). Conclusions:IL-13, IL-4, and FcER1B genes are risk genes for the development of API positive wheezing in children under 5 years old. SNP typing of these genes can be used to evaluate the risk of API positivity in clinical practice.

Objective:To evaluate the role of G protein-coupled receptor 30 (GPR30) in reduction of ketamine-induced long-term cognitive dysfunction by 17β estradiol in neonatal rats.Methods:Thirty healthy male Sprague-Dawley rats, aged 7 days, weighing 11-18 g, were divided into 5 groups ( n=6 each) using a random number table method: control group (group C), ketamine group (group K), 17β estradiol plus ketamine group (group KE), GPR30 agonist G1 plus ketamine group (group G1K) and GPR30 inhibitor G15 plus 17β estradiol plus ketamine group (group G15EK). Ketamine 75 mg/kg was intraperitoneally injected in group K. In group EK, 17β estradiol 600 μg/kg was subcutaneously injected, and ketamine 75 mg/kg was intraperitoneally injected.In group G1K, G1 200 μg/kg was subcutaneously injected, and ketamine 75 mg/kg was intraperitoneally injected.In group G15EK, G15 300 μg/kg and 17β estradiol 600 μg/kg were subcutaneously injected, and ketamine 75 mg/kg was intraperitoneally injected.The equal volume of normal saline was intraperitoneally given in group C. The injection was performed every 24 h for 3 consecutive days.All the rats were allowed to grow up till postnatal day 60, and then Morris water maze test was performed to evaluate their spatial learning and memory function.The rats were sacrificed after the end of Morris water maze test, and hippocampi were removed for determination of contents of acetyl cholinesterase (AChE) and acetylcholine (ACh) by enzyme-linked immunosorbent assay. Results:Compared with group C, the escape latency was significantly prolonged on the 3-5 training days, the frequency of crossing the platform and percentage of time of staying at the target quadrant were decreased, the content of AChE was increased, and the content of ACh was decreased in group K ( P<0.05). Compared with group K, the escape latency was significantly shortened on the 3-5 training days, the frequency of crossing the platform and percentage of time of staying at the target quadrant were increased, the content of AChE was decreased, and the content of ACh was increased in EK and G1K groups ( P<0.05). Compared with EK and G1K groups, the escape latency was significantly prolonged on the 3-5 training days, the frequency of crossing the platform and percentage of time of staying at the target quadrant were decreased, the content of AChE was increased, and the content of ACh was decreased in group G15EK ( P<0.05). Conclusion:GPR30 is involved in reduction of ketamine-induced long-term cognitive dysfunction by 17β estradiol, which is related to regulating the contents of AChE and ACh in hippocampi of neonatal rats.

Objective To evaluate the effect of self-management program in patients with rheumatoid arthritis(RA).Methods Self-management of RA patients was performed using a chronic disease self-management program (CDSMP).The health status,overall function,disease activity index,joint swelling and tenderness,joint pain score were analyzed at 12 and 24 weeks.Results At 12 and 24 weeks,health status,overall function,disease activity index,joint swelling and tenderness,joint pain score showed significant differences in two groups.Conclusion Self-management program may reduce complications,restore joint functions and improve social interactions,and improve quality of life.