Melatonin has a significant inhibitory effect on various cancers,especially on breast cancer.In estrogen receptor (ER)-positive human breast cancer,anti-cancer effects ofmelatonin on breast cancer cells and transplanted tumors mainly achieve by suppressing ER mRNA expression and ER transcriptional activity via the MT1 receptor.In addition,melatonin regulates the transactivation of other members of the nuclear receptor super-family,estrogen metabolizing enzymes,and the expression of related genes.Furthermore,melatonin also suppresses tumor aerobic metabolism,critical cell-signaling pathways relevant to cell proliferation,survival,metastasis,and drug resistance.Melatonin demonstrates both cytostatic and cytotoxic activity in breast cancer cells that appears to be cell-type specific.Studies on animal and human models indicate that disruption of the circadian nocturnal melatonin signal promotes the growth,metabolism,and signaling of human breast cancer,resulting in invalid hormone therapy and chemotherapeutic resistance in breast tumors.

Targeted agents for advanced colorectal cancer mainly include inhibitors of vascular endothelial growth factor (VEGF) and epidermal growth factor receptor (EGFR).Studies show that bevacizumab and cetuximab can improve the prognosis of advanced colorectal cancer patients,but there is slight difference in the choice of chemotherapy regimens when combined with them.Bevacizumab and cetuximab can improve the overall survival of K-ras wild-type colorectal cancer patients similarly.The emergence of new targeted drugs such as aflibercept,regorafenib provides more choices for the targeted therapy of advanced colorectal cancer patients.

OBJECTIVE:To investigate the stability of reduced glutathione sodium after mixing with glucose injection (5% or 10%),glucose and sodium chloride injection or 0.9% sodium chloride injection. METHODS:After mixing of reduced glutathione sodium with glucose injection (5% and 10%),glucose and sodium chloride injection,and 0.9% sodium chloride injection,respectively,the 4 mixtures at 0,0.5,1.0,1.5,2.5,3 h after mixing which were stored respectively in 25℃ or 37℃ thermostatic bath were observed in respect of the changes in appearance,pH values,absorbability,contents and the insoluble particles. RESULTS:After mixing of reduced glutathione sodium with glucose injection (5% and 10%),glucose and sodium chloride injection,and 0.9% sodium chloride injection,respectively,the appearance and pH values of the 4 mixtures showed no obvious change,but the contents and the insoluble particles of the 4 mixtures experienced changes of different degree. CONCLUSION:Reduced glutathione sodium is stable in glucose injection (5% or 10%),glucose and sodium chloride injection or 0.9% sodium chloride injection within 2h after mixing.

OBJECTIVE:To determine the residues of 9 kinds of organochlorinated pesticides in Polygonum multiflorum.ME-THODS:Samples were extracted with ethyl acetate by ultrasonic wave assistant extraction and purified on Florisil solid-phase extraction column.The residues of organochlorinated pesticides were determined with capillary gas chromatography with GC-MS.The separation was performed on DB-5MS(30 m?0.25 mm,0.25 ?m) fused-silica capillary column with injector temperature of 230 ℃.The initial column temperature was 100 ℃,then raised to 220 ℃ at the rate of 8 ℃?min-1.The column temperature was ra-ised at 250 ℃ at the rate of 5 ℃?min-1 for 10 min.The column flow was 1 mL?min-1 and injection volume was 1 ?L.RESULTS:9 kinds of organochlorinated pesticides were completely separated within 30 minutes.The average recoveries ranged from 80.4% to 97.2%(RSD ranged from 3.5% to 7.4%,n=6).CONCLUSION:The method is sensitive and accurate for the content determination of the residues organochlorinated pesticides.

Objective To dynamically observe the expressions of Toll like-receptor 2 (TLR-2),TLR-4 and inflammatory cytokine IL-1 beta and TNF alpha,and analyze the correlation between TLR-2,TLR-4 and inflammatory response on rat cornea alkali burn.Methods Forty SPF healthy SD rats were excluded the anterior segment disease,the right eye was set as burn experiment and the left eye as normal control,Ⅲ level corneal alkali burn model was established with concentration of 1 mol · L-1 NaOH(At the establishment and after the establishment of the model,the inconsistent degree of corneal bums,the corneal perforation and hyphema in rats,etc.,were removed,and finally randomly selected 32 eligible rats),then were randomly grouped into 3 days,7 days,14 days and 21 days group,8 eyes in each group.The rats were observed and photographed anterior segment of each group,evaluated the corneal inflammation index,then removed the eyeball of the rats in the corresponding time points.The eyeballs were made into pathological tissue section and stained with HE method.The number of inflammatory cells in the cornea was calculated,and the expression of TLR-2,TLR-4,IL-1 beta and TNF alpha was detected in the rat cornea with method of Western blot protein detection at the same time.The differences of each group were analyzed,and the correlation was assessed between TLRs and inflammatory factor.Results There were the expressions of TLR-2,TLR-4,IL-1 beta and TNF alpha in the normal rat cornea,and its expressions were gradually increased after alkali burn,reached the peak at the 7 days,then decreased gradually,the difference of each group (the 3 day,the 7 day,the 14 day,the 21 day) was statistically significant (all P ＜ 0.05).The expressions of TLR-2 and IL-1 beta (r =0.986,P ＜ 0.05),TNF alpha (r =0.986,P ＜ 0.05) were positive correlated.The expressions of TLR-4 and IL-1 beta(r =0.975,P ＜ 0.05),TNF alpha (r =0.990,P ＜0.05) were positive correlated.Conclusion TLRs participates and may start immune inflammatory response after corneal alkali burn,mediates the production of inflammatory cytokine.

The brain edema is a secondary cerebral injury in intracerebral hemorrhage(ICH) and one of the main causes of deterioration and death.The toxic effect of blood clots is involved in the formation of brain edema.The article reviews the commonly used antiedema drugs including mannitol,glycerol,hypertonic saline,furosemide,albumin,glucocorticoids,sodium aescinate and aprotinin,and introduces such hopeful drugs as edaravone,deferoxamine,argatroban and celecoxib in the treatment of ICH.

Objective Our aim is to compare the safety and benefits of laparoscopic versus open incision hernia repair.Methods Forty-seven patients in our hospital were analyzed with prospective randomized double-blind study following either laparoscopic or open hernia repair.And others prospective randomized studies(PRS)were analyzed.Results Overall complication rate was similar in both groups(8.5% versus 9.2% in the laparoscopic and open groups respectively),but some early complications in the laparoscopic group maybe require a reoperation.Operating time was similar in the laparoscopic group.There was shorter length of stay and higher expense in the laparoscopic group and there was significant difference in the pain scores and medications,resumption of diet,or activity scores.At 2 weeks,there was no difference in the activity or pain scores,but physical function and physical health scores on the short-form 36(SF36)quality of life assessment forms were little in the laparoscopic group.Regardless of the technique(P=0.158).The result of PRS meta-analyses is that operating time was simila in the laparoscopic group.There was longer length of stay in the Laparoscopic group.And the rate of wound infection is significantly higher in the open groups.Conclusion Unlike other minimally invasive procedures,Laparoscopic hernia repair did not offer an advantage over open hernia repair in all studied parameters except pain,activities and quality of life scores at 2 weeks.It also took similar to perform.The choice of the procedure should be based on surgeon or patient preference.

The interaction between immune response and metabolic regulation can be viewed as a central homeostatic mechanism,dysfunction of which will lead to many diseases.This nonlinear interaction,which has the characteristic of super-complexity,can’t be controlled unless it is studied as a holism and the change of condition is researched.To study this homeostasis,bottom-up method used in system biology is limited.Ying-wei theory of TCM uses another method to describe di erent states of metabolic and immune systems e ectively.The unique approaches and rich experiences applied in TCM are of great value.

OBJECTIVE To explore the risk factors and countermeasures of burn wound infection.METHODS The data of burn patients in hospital from 2005 to 2007 were retrospectively analyzed.RESULTS From 341 burn patients 257 got infected and total infection rate was 75.4%.Investigation shows that the probability e of infection in 3 days was 12.9%,but the rate became 72.7% after 4 to 10 days.The bigger the wound area,the higher the possibility to got infected.The infection rate was 43.8% when BSA was smaller than 20.0%.When BSA was bigger than 41.0%,the rate was up to 88.0%.When BSA was bigger than 61.0%,the rate was 100.0%.Except that,antibiotics and standard medical performance were the important factors related to burn infection.CONCLUSIONS To strengthen the aseptic concept among medical staff,pay attention to the environment of hospital,and the sterilization of the materials,debridement and drainage in time,and rational usage of antibacterial drugs,are the effective countermeasures to reduce burn wound infection.

Objective:To compare the social adaptability of Chinese and Japanese children Method:306 preschool children in Xi'an and 215 Japanese children were sampled The research instrument was the Infant-Junior Middle School Social Adaptive Capacity Scale Result:In the six fields of social adaptability, Chinese children had lower scores than Japanese children, except for that of sports Conclusion:Chinese preschool children have lower social adaptive capacity, which may be due to the overprotective attitude of Chinese parents or grandparents