Objective In order to elucidate neurotoxic actions of toluene in the air of submarine, the effect of toluene on biochemical alteration in the brain was studied in rat. Methods Adult healthy male Sprague-Dawley (SD) rats were randomly grouped into five groups (blank control group, excipient group, low dose group, medium dose group and high dose group). Toluene-exposed rats were administered with toluene in different doses (once a time every other day). Rats of excipient group were given olive oil with the volume as same as toluene. Nothing was given to rats of blank control group. 30 days later, all rats were sacrificed and the hippocampus and cortex were harvested for determination of nitric oxide synthase (NOS), nitric oxide (NO), malondialdehyde (MDA), Na~+-K~+-ATPase, reactive oxygen substances(ROS) and glutamic acid levels. Results NO content and NOS activity of rat's hippocampus in high dose group increased significantly compared with that of control group, and NO content was significantly positively correlated to NOS activity (r=0.7254, P

Objective Stromal and glandular cells of human endometrium were successfully isolated and cultured in this experiment. Methods These two types of cells were observed by light microscopy and verified by immunocytochemical staining. Results The result showed that some of stromal cells became adherent after.0 5h of culture.Two shapes of stromal cells were found.One was spindle and the another was polygonal.Immunocytochemical staining method showed that both shapes of stromal cells were positive for vimentin,with 95% of positive rate,and negative for cytokeratin 1,indicating that these cells were endometrial stromal cells.Most of glandular cells became adherent after 24h of culture and formed tightly packed whorls after 4d.Individual cells were polygonal and had a large and round nucleus.Immunocytochemical staining method showed that glandular epithelial cells were positive for cytokeratin 1,with 90% of positive rate,suggesting their nature of epithelial cells. Conclusion Stromal and glandular cells of human endometrium were successfully isolated by using two series of filter and cultured in this experiment. [

Objective To investigate whether the new mechanically-activated (MA) cation channel Piezo 1 protein can cause the apoptosis of human chondrocytes under compressive loading,using a Flexercell unit by activating MAPK/ERK5 signal pathway.Methods Primary human chondrocytes were isolated,cultured,and then subjected to the static compressive loading for 2 h,12 h,24.h and 48 h,respectively.The GsMTx4,which is the special inhibitor of the Piezo1 protein and the BIX02188,which is the inhibitor of the ERK5 served as the inhibitor group.The immunofluorescence was used to locate the expression of the Piezo 1 protein.The expressions of Piezo1 and ERK5 were assessed by reverse transcription-polymerase chain reaction (RT-PCR),as well as the apoptosis gene B cell lymphoma/leukemia-2 (Bcl-2),Bcl-associated X protein (Bax) and Bcl-associated death promoter (BAD).In addition,Piezo1 inhibitor,GsMTx4,was used to block the MA cation channel Piezo1,served as the inhibitor group.AVPI was used to detect the apoptosis of the OA chondrocytes.Results The location of the Piezo1 was expressed in nucleus and cytoplasm of chondrocytes.The expression of the Piezo1,ERK5,BAD,and Bax mRNA in the OA chondrocytes is weak.The 12 h stretch force group was significant increased,and the 24 h stretch force group was the highest expression.However,the expression of the 48 h group was decreasing.The expression of the Bcl-2 in the 12 h group was decreasing,and the 12 h stretch force group was the lowest expression while the 24 h stretch force group was increasing.In the GsMTx4 group,the expression of the Piezo1,ERK5,BAD,Bax was decreasing while the Bcl-2 was increasing.In the BIX02188 group,the expression of the ERKS,BAD,Bax was increasing while the Bcl-2 was decreasing,while the expression of the Piezo1 was not change.The result of AV-PI shown that the 2 h stretch force group increased early stage of apoptosis.The 12 h stretch force group increased late stage of apoptosis,and the 24 h stretch force group's apoptotic rate was the highest.However,the apoptotic rate of the 48 h group was lower than the 24 h stretch force group.The GsMTx4 could inhibit the late stage of apoptosis.Conclusion Piezo 1 plays an important role in the apoptosis of human chondrocyte through the MAPK/ERK5 signal pathway.

Objective Serum pharmacochemistry was performed to screen the bioactive constituents of Resina Draconis.Methods Based on HPLC fingerprints of Resina Draconis,the migrating constituents absorbed into blood were determined by comparing the HPLC fingerprints of extraction of Resina Draconis(ERB),herb serum sample,and control serum sample,and with the help of LC-MS/MS.Results Six compounds absorbed into blood were detected,five of them were original in form which were 3,4′-dihydroxy-5-methoxystilbene,cochinchinenin B,4′-hydroxy-4,2′-dimethoxy-dihydrochalcone(a new compound),cochinchinenin A,and loureirin B,respectively.The other might be the original constituent or the metabolite.Conclusion The six constituents absorbed into blood are possible bioactive components of Resina Draconis in vivo.Further research will help clarify the bioactive constituents and mechanisms of Resina Draconis.

Objective To observe the inhibitory effect of caspase\|3 mRNA antisense oligodeoxynucleotides (ASODN) on the apoptosis of HL\|60 cells, and to screen the effective ASOND. Methods By means of the lipofectimine\|mediating transfection, caspase\|3 mRNA ASODNs of four different sequences were introduced into HL\|60 cells followed by ? irradiation.The gel electrophoresis was performed for the DNA ladder, Hoechst 33258\|propidium iodide fluorecent staining for the percentage of apoptotic cells, and FCM for quantitative analysis of apoptosis. Results When HL\|60 cells were transfected with caspase\|3 mRNA ASODNs targeting 5'noncoding region (sites -62 to -46) and initiative coding region (sites -1 to 16) at the final concentration of ≥3?? mol/L, the DNA ladder was not detected with the gel electrophoresis, nor was the apoptotic peak found with FCM. Fluorescent staining analysis showed that the percentage of apoptotic cells was significantly lower than that in the control groups including non\|transfection group and mismatched oligodeoxynuleotide group ( P

Objective To investigate the effect of recombinant human endostatin (rhES) on the growth of transplanted gastric cancer in nude mices. Methods At the 20 day after tumor transplantation, twelve Balb/c-nu/nu mice were randomly divided into two groups:(1)Control group: 0.9% NS 0.1ml was injected around the tumor,once a day for 10 days; (2)experimental group: rhES 2mg/kg was inpected around the tumor once a day for 10 days. The tumors bulk were measured every five days until five days after injection. VEGF, bFGF,PDGF,VEGF-c, VEGFR-3, FⅧAg, PCNA, bcl-2 and apoptosis index were examined. The tumor inhibition rate(TIR) and tumor condensing rate (TCR) were calculated. The difference of AI , tumor bulk and MVD between the 2 groups were assessed. Results The difference of the tumor bulk between the two group was no statistical significance before injection, but at the time of 15 days after begining of the injection, the difference was significant(P =0.0001); and in the experimental group the tumor bulk was also decreased significantly after treatment(P=0.0015). MVD, VEGF, bFGF, PDGF, VEGF-c,VEGFR-3 and bcl-2 expressed lower in experimental group than those in control group; PCNA expression was the same in the 2 groups. AI increased significant in experimental group compared with in control group (P =0.0000). In experimental group,the TIR was 91.2%,TCR 53.5%,and HE staining presented more necrotic areas.Conclusions rhES can inhibit angiogenesis of the tumor and promote tumor cell apoptosis, so that can inhibit the growth of tumor.

Objective To determine the effect of chronic restraint stress during the late pregnancy on the behavior parameters of learning and memory of the rat offspring. Methods Stress was inflicted each day of pregnancy from day 13 to day 20. Pregnant females were individually restrained for 45 min three times a day. After delivery, one-month-old and three-month-old female and male rats were examined in Morris water maze to analyze the effect of exposure to prenatal restraint stress on the spatial learning and memory. Results In comparison to the control group, the latency to find the platform in the prenatally stressed group was significantly prolonged in both one-month-old and three-month-old offsprings (P

Objective To study the effect of chronic restraint stress on the expressions of Bax, Bcl-2, Fas and FasL in hippocampus of the offsprings during the pregnancy. Methods Restraint stress was performed three times each day of pregnant women from day 13 to day 19 (each time for 45min). After delivery, the expression of Bax, Bcl-2, Fas and FasL in hippocampus of one-month-old female and male rats were respectively examined by immunohistochemical method. Results Compared with the control group, the expression level of Bax in stressed group is higher (P 0.05). Conclusion Restraint stress during the pregnancy can upgrade the expression of Bax and degrade the expression of Bcl-2 of the offsprings; no effect was found on the expressions of Fas and FasL of the offsprings.

objective To evaluate the clinical effect of touqing capsule associated with Fengchi on the vertebral artery type of cervical spondylosis(CSA)in the attack stage.Methods A total of 100 patients with CSA, according to the doctor order, were randomly divided into a control group and a treatment group respectively, with 50 patients in each. The control group was treated with acupuncture therapy, the treatment group was additionally treated with Touqingcapsule on the basis of the control group, and both groups were treated for 20 days. The hemodynamics was detected by transcranial doppler, the change of TCM syndrome integral was observed before and after the treatment, and the clinical efficacy was evaluated.Results After treatment, the treatment group dizziness (1.10 ± 0.33 vs. 2.01 ± 0.26,t=14.909), neck shoulder ache (0.87 ± 0.16 vs. 1.92 ± 0.69,t=10.266), numbness (0.95 ± 0.14)vs. 1.87 ± 0.16,t=29.844), the total integral (2.16 ± 0.75 vs.3.89 ± 1.14,t=8.756) integral were significantly lower than the control group(P<0.01).Treatment group RVA (40.03 ± 5.89 cm/svs. 34.26 ± 6.26 cm/s,t=4.628), the LVA (42.14 ± 5.42 cm/svs.33.89 ± 6.08 cm/s,t=6.985) rise and PI (0.79 ± 0.14 vs.1.04 ± 0.19,t=7.312) reduction were significantly better than those of the control group (P<0.01). The total effective rate in the treatment group was significantly better than the control group (91.7%(44/48)vs. 74.5%(35/47),χ2=3.863, P=3.863).Conclusion Touqing Capsule associated with Fengchi is effective for CSA. Its functional mechanism is correlated with improvement of haemodynamics of vertebral-basilar artery of the CSA patients.

Objective To observe the effects of multidisciplinary rehabilitation on early heterotopic ossification of patients with traumatic elbow joint injury.Methods 80 work injury patients of early heterotopic ossification after traumatic elbow joint injury were randomly divided into the experiment group(42 cases) and control group(38 cases).The experiment group received multidisciplinary rehabilitation,including physical therapy,occupational therapy,physical factor therapy,traditional Chinese medicine,ward rehabilitation and vocational training.The control group was treated with pain killer and diminish inflammation medicine and median frequency electrical therapy.Range of motion(ROM) of joint and visual analogue scale(VAS) were separately assessed before and after 3 months treatment.Results After 3 months treatment,ROM and VAS of the experiment group were significantly changed compared with admission(P<0.01).The effectiveness of the experiment group was superior to that of the control group(P<0.05).After discharge,39 cases returned to primary work,3 cases changed work in the experiment group,and after 1 year follow-up,no case needed to receive operation.Conclusion In the early stage of heterotopic ossification after traumatic elbow joint injury,multidisciplinary rehabilitation can significantly relax clinical signs,improve functions and make the work injury patients return to work.