Aim To investigate the effect of ASX (trans-astaxanthin)on the expressions of NF-κB p65 , iNOS and TNF-αin the hippocampus and the prefron-tal cortex of chronic alcohol mice.Methods 40 mice were randomly divided into control group,7 d,14 d, 21 d,28 d alcohol-treated group,the mice were given alcohol preference testing on day of 6,13,20,27. Mice were subjected to alcohol withdrawal for one day after testing.In order to determine the exact time point of cognitive memory impairment in mice after alcohol consumption,they were given morris water maze test after alcohol preference testing. The other 40 mice were randomly divided into control group, alcohol group and ASX group (20,40,80 mg·kg-1 ).After chronic ASX administration, mice were given one probe trial of 60 s in which the platform was removed from the pool to evaluate escape latency,the number of times the animal crossed the previous location of the platform,time spent in the target quadrant,and swim-ming speed.The expressions of NF-κB p65 ,iNOS and TNF-αwere detected by western blotting after behav-ioral testing.Results The mice showed an obvious al-cohol-related phenomenon on 2 1 and 28 days after al-cohol treatment,and escape latency significantly in-creased,entries in target quadrant and duration in tar-get quadrant significantly decreased with increasing drinking days and withdrawal times.The results also suggested that 2 1 days chronic ASX treatment reversed this learning deficit.Moreover,the expression of NF-κB p65 ,iNOS and TNF-αin the hippocampus were significantly increased after 2 1 d alcohol treatment (P<0.001),and pretreatment with ASX (40,80 mg· kg-1 ) could obviously inhibit these changes (P <0.001);Parallel to these changes in the hippocam-pus,the level of NF-κB p65 ,iNOS and TNF-αwere also increased in the prefrontal cortex (P<0.001 ), however,only ASX (80 mg · kg-1 ) administration could inhibit the increase (P<0.05 ).Conclusion These results indicate that ASX pretreatment can pro-tect against alcohol-induced memory impairment via the inhibition of NF- κB p65 ,iNOS and TNF-αexpres-sions in hippocampus and prefrontal cortex.

Lycii Cortex, a popular herb medicine in traditional Chinese medicine, is used to treat different inflammation-related diseases. The aim of our work is to find the key constituents inhibiting NF-kappaB, a key regulator of inflammation. In the investigations of cell-based in vitro assays of extracts, we found that both ethyl acetate extract and methanol extract of Lycii Cortex inhibited the TNF-alpha-induced activation of NF-kappaB. Through bioassay-guided fractionation, we identified 4 phenolic amides including trans-N-(p-coumaroyl) tyramine (1), trans-N-feruloyltyramine (2), trans-N-caffeoyltyramine (3), and dihydro-N-caffeoyltyramine (4). Four phenolic amides showed differently inhibitory activities on TNF-alpha-induced NF-kappaB activation. Trans-N-caffeoyltyramine (3) was identified as the key component with an IC50 of 18.41 micromol x L(-1). It was suggested that the hydroxyl group at C-3 in trans-N-caffeoyltyramine might be a key binding site and its C-7,8-double bond might play an important role on NF-kappaB inhibitory activities as the link of the conjugation of pi electrons leading to a partial planar conformation. It might be inferred that the biological activity of compound 3 is attributed to the structure of Michael reaction acceptor containing alpha, beta-unsaturated ketones and benzene along with hydroxyl group in o-diphenol.
Biological Assay ; Cell Line ; Drugs, Chinese Herbal ; chemistry ; isolation & purification ; pharmacology ; Humans ; Inflammation Mediators ; antagonists & inhibitors ; immunology ; Lycium ; chemistry ; Molecular Structure ; NF-kappa B ; antagonists & inhibitors ; immunology

Objective: To compare the efficacy of different treatment protocols in treating transient synovitis of the hip (TSH) in children and to optimize the clinical treatment strategy for this condition. Methods: Ninety kids with TSH were divided into a control group, a chiropractic group and a chiropractic plus foot bath group using the random number table method, with 30 cases in each group. The control group was treated with conventional traction; the chiropractic group was given chiropractic treatment based on the control group; the chiropractic plus foot bath group was given Chinese medicine foot bath based on the chiropractic group. Traction and foot bath were conducted once daily while chiropractic was done once every other day, all with 14 d as a treatment course for a total of two courses. Changes in the visual analog scale (VAS) score and range of motion (ROM) of the hip joint in the three groups were observed, and the efficacy was compared. Results: The total effective rate was 93.3％ in the chiropractic plus foot bath group, versus 76.7％ in the chiropractic group and 66.7％ in the control group, and the total effective rate was notably higher in the chiropractic plus foot bath group than in the other two groups (both P<0.05). Respectively after the first and second treatment course, the VAS score decreased significantly in each of the three groups compared with that before treatment (all P<0.01), and the ROM of the hip joint in flexion increased significantly (all P<0.01). After two treatment courses, the VAS score was lower in the chiropractic plus foot bath group than in the other two groups (both P<0.05), and its ROM of the hip joint in flexion was larger than that in the other two groups (both P<0.05). Conclusion: Based on traction, chiropractic plus Chinese medicine foot bath can effectively reduce pain and improve motor function of the hip joint in treating TSH.

Objective To explore the effects of secreted apoptosis-related protein 1 (SARP1) on apoptosis of the hyperstrophic scar fibroblasts (HSFB) and its regulating mechnisms.Methods The recombinant vector was identified by enzyme digestion analysis.And the virus supernatant of the recombinant vector was extracted from packaged 293 cells,then it infected the skin fibroblasts from hypertrophic scar patients,which aimed to promote its expression of SARP1 protein.After adenovirus infection,the expression of SARP1 in the fibroblasts was confirmed by RT-PCR and Western blot.The effect of SARP1 on proliferation of HSFB was detected by MTT assay,and the effect of SARP1 on apoptosis of HSFB was detected and change of the cells functions were analyzed by FACS.Results Recombinants were confirmed.After adenovirus infection,both protein and mRNA of SARP1 were detected in HSFB.And the mRNA value of SARPlwas detected to increase significantly by RT-PCR and the protein expression was detected to increase significantly by Western blot (P＜0.05).The proliferation in the groups of the adenovirus infection and HSFB was positively regulated by SARP1 (P＜0.01) and the apoptosis of them was inhibited by the expression of SARP1 as compared to the control groups of HSFB and Ad-EGFP.It showed that the apoptosis index decreased as compared the group of infected fibroblasts to the control group by flow cytometry.Conclusions SARP1 could be highly expressed in HSFB by adenovirus infection,exhibiting the proliferation-enhancing and apoptosis-inhibiting effects on HSFB.

Teaching information retrieval course in two phases for students of 8-year clinical medicine was de-scribed in aspects of its contents, organization, teaching material construction and examination methods.Its results were analyzed according to the written examination score, report on a special topic, group report and feedback of students.Measures were put forward for further improving the classroom teaching results, namely effective linking of teaching contents, careful section of retrieval topics, selection and training of teachers.

OBJECTIVE To investigate the effect of ferulic acid(FA)on motor function of rats with a spinal cord injury model(SCI)and its possible effects on expression of microtubule-associated protein light chain 3(LC3),Beclin1,Bcl-2 and Bax. METHODS SD rats were randomly divided into 3 groups:sham group,SCI group,FA(100 mg·kg-1,po)group. Rats were subjected to moderate contusion inju?ries using a vascular clip for 2 min to establish an SCI animal model beforfe they were given BBB scores and inclined plate scoring function test on 6 h,1,3,7 and 14 d after SCI. After the test,rats were sacrificed. Spinal cords were observed by hematoxylin eosin(HE)staining. Furthermore,the expressions of LC3,Beclin1,Bcl-2 and Bax were detected by Western blotting. RESULTS Compared with the sham group,BBB scores and inclined plate function scores significantly decreased in model group. The BBB scores decreased from 21 in sham group to(0.5±0.5)in SCI group,and inclined plate function scores decreased from 70° in sham group to(5.8±2.0)° in SCI group. However,this was reversed by FA treatment. BBB scores and inclined plate function scores increased from 3.0 ± 1.7 to 6.2 ± 3.6(P<0.05)and from (13.3 ± 4.1)° to(26.7 ± 8.7)°(P<0.05)after FA was po given for 7 d,respectively. HE staining showed the gradual emergence of internal spinal cord edema,while the structural changes associated with spinal cord injury could be significantly reversed by administration of FA. Moreover,the expression of LC3-Ⅱ/LC3-Ⅰand Beclin1 was significantly increased in SCI 1 d group(P<0.01),but was decreased in 14 d group when compared with SCI 1 d group(P<0.05). The expression of Bcl-2 was increased in SCI 14 d group,and the ratio of Bcl-2/Bax was increased on 14 d after SCI(P<0.05). Compared with the SCI group,LC3-Ⅱ/LC3-Ⅰand Beclin1 expression was increased in FA-treated 1 d group(P<0.05),Bcl-2 expression was increased in FA-treated 14 d group and the ratio of Bcl-2/Bax was significantly increased on 14 d after SCI(P<0.05). CONCLUSION FA has a therapeutic effect on SCI,which may be related to the impact of neuronal autophagy and apoptosis. Meanwhile,autophagy of SCI may be a process of gradual enhancement followed by weakening,and the anti-apoptosis effect may gradually increase with autophagy.

Objective To study interleukin-1 receptor(IL-1R) and connexin(Cx36) gene expression following Mg 2+-free-induced seizures in cultured developing neuron. Methods Rat embryo cortical neurons cultured for 6 and 17 days were exposed to Mg 2+-free media to induce seizure. At different time after Mg 2+-free treatment, real-time RT-PCR was used to detect IL-1R and Cx36 mRNA expression. Results 1. IL-1R mRNA expression transiently decreased after Mg 2+-free treatment in neurons cultured for 6 and 17 days in vitro. Then the levels of IL-1R mRNA expression recovered in neurons cultured for 6 days, but IL-1R mRNA expression were increased in neurons cultured for 17 days compared with control group and the peak was at 24 hours. 2. In neurons cultured for 6 days in vitro, Cx36 mRNA expression increased after Mg 2+-free treatment compared with control group, the peak was at 24 hours. But in neurons cultured for 17 days in vitro, Cx36 mRNA expression decreased at 6 hours after Mg 2+-free treatment compared with control group, the peak was at 24 hours. Conclusions IL-1R mRNA and Cx36 mRNA expression following Mg 2+-free-induced seizures are different between the neurons cultured for 6 and 17 days in vitro. This is possibly related to the different neuron injury between 6 and 17 days in vitro following seizures.

Objective:To determine the prevalence of sarcopenia and explore related influencing factors of sarcopenia in maintenance hemodialysis (MHD) patients.Methods:MHD patients aged ≥18 years old and receiving therapies of ≥3 months from March 2019 to December 2019 in Blood Purification Centre of Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine were retrospectively enrolled in this study. General data of the patients were collected. Grip strength was measured by the Jamar dynamometer and the chair stand was measured by a chair of standard height to assess skeletal muscle strength and appendicular skeletal muscle mass was measured by dual energy X-ray absorptiometry. Baseline data between MHD patients with and without myasthenia were compared. Logistic regression analysis method was used to analyze the influencing factors for sarcopenia in MHD patients.Results:A total of 125 MHD patients were enrolled, with 68 males (54.4%), age of (59.4±14.9) years and median dialysis age of 51.0(23.5, 101.0) months. Sarcopenia was diagnosed in 39 cases (31.2%). Compared with MHD patients without sarcopenia, age, tumor necrosis factor-α, von Willebrand factor (vWF) and proportion of using α ketones were higher, and serum carbondioxide combining power (CO 2CP), prealbumin, albumin and proportion of regular exercise were lower in MHD patients with sarcopenia (all P<0.05). Multivariable logistic regression analysis results showed that low CO 2CP ( OR=0.717, 95% CI 0.576-0.892, P=0.003), high vWF ( OR=1.037, 95% CI 1.016-1.058, P<0.001) and no regular exercise ( OR=0.309, 95% CI 0.118-0.810, P=0.017) were independent influencing factors of sarcopenia in MHD patients. Conclusions:The prevalence of sarcopenia in MHD patients is high. Low CO 2CP, high vWF and no regular exercise are independent influencing factors for sarcopenia in MHD patients.

Electromagnetic Fields ; Magnetic Fields ; Microwaves ; adverse effects ; Television

Objective To investigate the effect of L-arginine on expression of protein kinase C(PKC)mRNA during pulmonary ischemia and reperfusion injury(PIRI)in the rabbits.Methods Single lung ischemia and reperfusion animal model was used in vivo.The rabbits were randomly divided into three groups(n=9,in each),sham operated group (Sham),PIR group(I-R)and PIR+L-arginine group(L-Arg).Changes of several rariables including malondialdehyde (MDA),superoxide dismutase(SOD),malandialde hyde(MDA),nitril oxide(NO),wet to dry ratio of lung tissue weight(W/D)and index of quantitative assessment(IQA)of histolngic lung injury were recorded at 60 minutes after reperfusion in lung tissue.Meanwhile the location and expression of PKC mRNA were observed.Lung tissue was prepared for light microscopic and electron microscopic observation at 60 minutes after reperfusion.Results In comparison with group I-R,PKC mRNA strongly expressed in intima and extima of small pulmonary artery as well as thin-waU vessels (mostly small pulmonary veins).The average optical density values of PKC-?,?and?mRNA in small pulmonary veins in L-Arg group had significance(all P＜0.01);SOD increased while MDA,W/D and IQA decreased at 60 minutes after reperfusion in lung tissue(P＜0.01 and P＜0.05).A morphologically abnormal changes of the lung tissue,were lessen markedly in L-Arg group.Conclusion L-arginine possess notably protective effects on PIRI in rabbits by activating PKC-?,?and?mRNA expression in lung tissue,raising NO level,dropping oxygen free radical level and decreasing lipid peroxidation.