Alzheimer's disease(AD)is a progressive neurodegenerative disease characterized by cognition impairment and behavioral abnormalities.While the mechanisms involved in AD remain unclear,various hypotheses have been proposed regarding pathogenesis of AD,among which the oxidative stress hypothesis has attracted more and more attention.In the present article,the relationship between oxidative stress and AD is reviewed,including sources of neuronal oxygen radical generation,the link of oxidative stress to pathogenesis of AD,preclinical and clinical studies of AD,therapeutic effects of antioxidants and phosphodiesterase inhibitors on AD.

Alcohol use disorder (AUD) is one of the main factors that threaten human health and life.WHO data show that about 3.3 million people die each year worldwide due to AUD.AUD has become a global public health concern,but its neurobiological and behavioral mechanisms remain unclear.Therefore,it is particularly urgent to develop valid and reliable animal models to investigate the underlying mechanisms of AUD.This review summarizes the animal species and modeling methods of AUD in order to explore the potential influence on the deviation of modeling in alcohol intake and provide helpful inputs to behavioral research of AUD.

Objective To analyze medication rules of TCM treatment for primary hepatic carcinoma in recent ten years;To provide references for clinical medication. Methods Literature about primary hepatic carcinoma in CNKI, VIP and Wanfang database from January 2005 to September 2015 was searched by computers to carry out statistical analysis of medicine classification and frequency of usage. Results Through screening, 131 articles were included, covering 131 compound TCM prescriptions, 228 kinds of medicine, and 1416 times of frequency of usage. Medicines with relatively high frequency were tonifying deficiency medicine 430 times (30.37%), damp-clearing medicine 233 times (16.45%), medicine for invigorating blood circulation and eliminating stasis (12.99%). Medicines with relatively high frequency were Atractylodis Macrocephalae Rhizoma 64 times (4.52%), Poria 62 times (4.38%), Glycyrrhizae Radix et Rhizoma 52 times (3.67%), Bupleuri Radix 49 times (3.46%), Paeoniae Radix Alba 45 times (3.18%), Astragali Radix 44 times (3.22%), Curcumae Rhizoma 43 times (3.04%), and Artemisiae Scopariae Herba 41 times (2.90%). Conclusion This study summarizes the medicine classification and frequency of usage of TCM treatment for primary hepatic carcinoma in recent ten years, which can provide data support for clinical treatment.

The main points are Tianzhu (BL 10),Wangu (GB 12) and the emerging subcutaneous point of the greater occipital nerve. Add Houxi (SI 3) and Kunlun (BL 60) points ifpain is in parieto-occipital area. Add the points of Zhongzhu (TE 3) and Qiuxu (GB 40) if pain is in the parietotemporal area. Fifty-six occipital neuralgia cases were treated with acupuncture.31 cases were clinically cured,24 cases improved and 1 case ineffective with a total effective rate of 98.3%.

AIM:To investigate the effects of rolipram on the ability of learning and memory and the activity of PDE4 in hippocampus following the focal brain injury induced by ischemia-reperfusion in rats.METHODS:The cerebral ischemia-reperfusion injury model was made by middle cerebral artery occlusion(MCAO) in rats.The rats were randomly divided into sham-operated group,model group,and rolipram group.Rolipram was administered once a day(1 mg/kg,ip) from 6 h after the onset of the operation for 2 weeks.Then the learning and memory abilities were tested after Morris water maze and step-though training.The activity of PDE4 in hippocampus was evaluated by HPLC.RESULTS:In the Morris water maze test,compared to sham-operated group,the platform-finding time and swimming distance in model group were significantly longer(P

Phosphodiesterase-4 ( PDE4 ) has been one of the most popular drug targets during recent years due to its critical role in the control of intracellular cyclic adenosine monophos-phate ( cAMP ) concentration and downstream signal transduc-tion. PDE4 is widely distributed in the central nervous system ( CNS) with different expression levels of its four subtypes. Re-cent data indicate that altered PDE4 expression and/or activity is relevant to multiple CNS disorders, such as depression, memory deficiency, drug dependence, and neural lesion. Selective PDE4 inhibitors exhibit therapeutic effects on these disorders and might be a promising pharmacotherapy. The paper highlights recent re-search progress in the roles of PDE4 in CNS function, and dis-cusses the prospects of PDE4 as a novel therapeutic target for CNS disorders.

Objective To evaluate the therapeutic effects of electromyography feedback functional electrical stimulation (FES) on plantar pressure of stroke patients. Methods 18 subjects were included in this study, who were with drop foot resulting from stroke, but could partly dorsiflex the paretic limb's ankle (Manual Muscle Test >2). They were tested on the RS-footscan plate before and after stimulation. The plantar pressure data of paretic foot and walking velocity before and after stimulation were compared. Results The initial touchdown points of most paretic foot were changed from Meta (metatarsal) 5 to heel; the time of initial touchdown of heel medial and heel lateral significantly improved, while that of Meta 3, Meta 4 and Meta 5 significantly delayed; the peak force, impulse and contact area of the heel significantly improved after stimulation (P<0.05). At the same time, the time of initial touchdown of heel medial and heel lateral of nonparetic foot significantly improved (P<0.05). Conclusion Electromyography feedback functional electrical stimulation can improve the gait pattern and the stability of patients with stroke.

To investigate the curative effect of electroacupuncture on luteinized unruptured follicle syndrome(LUFS) and its mechanism. Methods:Sixty LUFS patients were randomly allocated to treatment (electroacupuncture) group and control (hCG) group. The follicular condition and ovarian arterial flow under color Doppler ultrasonogaphy and a change in reproductive endocrine level were observed in the patients before and after treatments. The ovulation rates and pregnancy rates were compared between the two groups,and the mechanism was investigated. Results:Both ovulation rate and pregnancy rate were significantly higher in the treatment group than in the control group (P＜0.01). There was a significant difference in the improvement in ovarian arterial flow between the treatment and control groups (P＜0.01). The improvement in endocrine level was significantly more marked in the treatment group than in the control group(P＜0.01). Conclusion:Electroacupuncture has a good effect on luteinized unrupture follicle syndrome. Its mechanism may be related to the improvement in ovarian arterial blood supply and the regulation of endocrine level.

OBJECTIVE To examine the reversal effect of desipramine (DMI) on resistance to temozolomide(TMZ) in U251/TR cells and explore its mechanism. METHODS U251/TR cells were exposed to DMI (20-80μmol · L-1) or TMZ (0.5-10 mmol · L-1) for 24 h, cell viability was determined by cell counting kit-8 assay with IC50 calculated. The cytotoxicity of U251/TR cells treated with TMZ (1 or 2 mmol·L-1) in combination with DMI (20, 30 or 40 μmol · L-1) for 24 h was detected using CCK-8 assay. Synergism between DMI and TMZ was analyzed by the JIN Zheng-jun method. Apoptosis of U251/TR cells induced by TMZ 1 mmol · L-1, DMI 30 μmol · L-1,or their combination was examined by Hoechst33258 stains and caspase 3 activity was detected by luminescence analysis. Expression of C/EBP homologous protein (CHOP) was measured using quantitative real-time PCR and Western blotting. The survival rate of U251/TR cells treated with TMZ 1 mmol·L-1 and/or DMI 30μmol·L-1 was also assessed after silencing CHOP expression by small interference RNA (siRNA). RESULTS DMI or TMZ alone inhibited the growth of U251/TR cells significantly in a concentration-dependent manner (r 2=0.983,0.982,P<0.05), with the IC50 (33.6 ± 0.5)μmol · L-1 and (2.5 ± 0.6)mmol · L-1, respectively. The cell viability inhibitory rate of U251/TR cells by TMZ (1 or 2 mmol · L-1) combined with DMI (20, 30, or 40μmol · L-1) was greater than that by TMZ or DMI alone (P<0.05). The JIN Zheng-jun analysis revealed that combination of DMI and TMZ produced synergistic cytotoxicity (Q>1.15), ie, compared with TMZ alone, TMZ (1 mmol·L-1) com?bined with DMI (30 μmol · L-1) produced significant nuclear fragmentation and condensation (P< 0.05). In addition, DMI and TMZ in combination activated caspase 3 activity in U251/TR cells (P<0.05). Knock?down of CHOP by specific siRNA attenuated the synergistic effect of DMI in the presence of TMZ, the survival rate of the combined drug group raised from 51.8%to 62.2%(P<0.05). CONCLUSION The results suggest that DMI reverse resistance of U251/TR cells to TMZ through activation of the CHOP-depend?ently apoptosis pathway.

OBJECTIVETo assess the prevalence of colorectal cancer (CRC) in Beijing and the reliability of the sequential fecal occult blood test (SFOBT) for CRC screening.

METHODSOf the natural population (48 100 persons) in several Beijing communities, we screened 26 827 persons with age over 30 using the SFOBT screening program, Guaiacum Fecal Occult Blood Test (GFOBT), Immuno Fecal Occult Blood Test (IFOBT), and colonoscopies.

RESULTSThe screening rate of the population was 74%. The positive rate of SFOBT was 5.6%. The prevalence of CRC in the entire population of Beijing was therefore calculated to be 36.57/10(5). Of 12 CRC detected patients, 4 cases were in stage Dukes A (33.33%), 7 cases in stage Dukes B (58.33%), only 1 case (8.34%) in stage Dukes C.

CONCLUSIONSThe prevalence of CRC in Beijing is one of the highest in China. Individuals at high risk for CRC or those over 50 years of age should be considered as primary candidates for screening. SFOBT screening is a cost-effective and reliable method for early detection of CRC.

Adult ; Aged ; Aged, 80 and over ; China ; Colorectal Neoplasms ; diagnosis ; Female ; Humans ; Male ; Middle Aged ; Occult Blood