Serum free fatty acids were isolated with trichloromethane and esterified with boratotrifluoricether/methanol. Heptadecanoic acid (17:0) was used as internal standard. The recovery rate of this method was 86.4% and coefficient of variation was 6.9%. The mean level of 25 normal adult serum samples was coincident with the data reported.

AIM To investigate antitumor effects of curcumin (Cur) combining with adriamycin (ADR) on human tumor cell lines in vitro and study the mechanisms. METHODS The antitumor effects of the drugs on tumor cell lines in vitro were determined with MTT method. The Jin's formula was used to analyze the effect of drug combination. Cellular ADR accumulation was measured by fluorescence spectraphotometry. RESULTS In simultaneous adiministration Cur 4 25～34 00 ?mol?L -1 combining with ADR produced a simple addition or potentiation effect. The cellular ADR accumulation was markedly increased in the presence of Cur in MDR cells, but decreased in sensitived cells. The experiment of membrane fluidity show that that Cur affects membrane fluidity neither on KB nor on KB v200 cell line. CONCLUSION Simultaneous adiministration of Cur combining with ADR produces synergistic effect. The mechanism is connected with increasing cellular ADR accumulationon on KB v200 cell line. While on KB cell line, it is related to synergistic pharmacological effect. But the action of Cur is not connected with the change of membrane fluidity on both cell lines.

Objective To compare the fetal and maternal outcomes of labor undergoing epidural block anesthesia with and without using hand-and-knee position in the second stage of labor.Methods A total of 1,158 subjects were included in the study.There were 560 subjects in the study group and 598 cases in the control group.All the subjects were divided into study and control group according to the randomized numbers.Both groups underwent epidural block anesthesia and used the same labor way in stage I and stage 3.In the study group,the hand-and-knee position was used for 15～30 minutes combined with uterine contractions and the delivery was done in the lithotomy position.In the control group,the gradidea took the semi-recumbent position with bent knees and bed elevated 40°,combined with uterine contractions until the delivery was done in the lithotomy position.The labor time of stage1,stage2,stage3 and all abor,labor way,perinaueum,complications and newborns were compared.Results The average time of the second stage labor and all labor in the observation group were significantly shorter than those of the control group (P＜0.05).The labor ways in the observation group was better than that of the control group (P＜0.05).The incidence of postpartum urinary retention in the observation group was significantly lower than that of the control group (P＜0.05).The differences of labor time for stage 1,stage2,perinaueum,blood loss rate,newboms' s tomor and neonatal asphyxia between two groups were not statistically significant (P＞0.05).Conclusions Under continuous epidural block anesthesia,the use of the hands-and-knees position in the second stage of labor can reduce the incidence of operative delivery,shorten the labor process,and reduce maternal complications.The method is worthy of promotion.

Objective To investigate the possible inhibition effect of a domestic novel drug-eluting balloon(DEB), such as controlling the vascular stenosis and reducing the intimal hyperplasia, on obstructive peripheral arterial disease (PAD) of lower extremity. Methods Male New Zealand rabbits (weighted 2.5-3.0 kg) were used for this study. Mustang bare metal stents (BMS) were separately implanted at both the proximal and distal site of abdominal aorta to establish the PAD models in rabbits. Bare balloon (PTA group) or drug-eluting balloon (DEB group) was separately used to dilate the stent segment of the aorta. The animals were sacrificed 28 days after the treatment. The aorta stent specimens were collected and sent for pathologic examination. Using Masson staining method the degree of intimal hyperplasia was estimated and the expression level of paclitaxel-targeted β-tubulin was determined with immunohistochemical method. The results were compared between the two groups. Results Morphologically, both the degree of intimal hyperplasia and the vascular stenosis rate in DEB group were significantly lower than those in PTA group. Meanwhile, immunohistochemical examination of paclitaxel-targeted β-tubulin indicated that its expression level in DEB group was obviously higher than that in PTA group. Conclusion This experimental study indicates that the domestic novel DEB has potential inhibition effect in respect of controlling the loss of lumen as well as reducing the intimal hyperplasia. This novel DEB carries excellent property, suggesting the possibility to use DEB in clinical treatment of PAD.

Objective By using optical coherence tomography (OCT) to evaluate the vascular neointimal hyperplasia and the stent strut coverage degree in patients with acute myocardial infarction (AMI) and in patients with stable angina (SA) one year after receiving drug-eluting stent (DES) implantation, and to compare the clinical results between the two groups. Methods A total of 39 patients, who received DES implantation due to coronary heart disease, including AMI (n=16, AMI group) and SA (n=23, SA group), during the period from March 2011 to July 2012, were enrolled in this study. One year after DES implantation, coronary angiography and OCT reexaminations were performed in all patients. The neointimal hyperplasia (NIH) thickness, NIH area, NIH volume, strut coverage and apposition rate were determined with OCT. The results were compared between the two groups. Results OCT measuring results showed that the mean NIH thickness of AMI group and SA group was ( 66 . 8 ± 20 . 7 ) mm and ( 121 . 6 ± 135 . 7 ) mm respectively (P=0.022); the NIH volume ratio were 5.66%±3.18% and 11.88%±8.22% respectively (P=0.005); the percentage of cross-section with NIH thickness over 100 μm was 22.56%±23.99% and 40.14%± 30.01% respectively (P=0.034); and the percentage of overall stent strut coverage was 89.27%±6.40% and 93.42%±7.03% respectively (P=0.007). All the above mentioned data of AMI group were obviously lower than those of SA group. Conclusion After DES implantation, the intimal repair, intimal hyperplasia and stent strut coverage in AMI patients are poorer.

Objective To investigate the effect of osthole on the proliferation and apoptosis of breast cancer cell line MCF-7 and its potential mechanisms.Methods Breast cancer cell line MCF-7 was treated by osthole 0,25,50,100,150 and 200 μmol/L respectively.MTT method was used to detect cell survival rate.HE staining was used to observe morphological changes,Annexin V-PI flow cytometry was used to analyze cell apoptosis,and RT-PCR and Western blot method were used to detect the mRNA and protein expression of peroxisome proliferator-activated receptor γ (PPARγ) and farnesoid X receptor (FXR),respectively.Results MTT assay showed that strong cytotoxicity of cell line MCF-7 was induced after administration of osthole for 72 h in a dose-dependent manner.Especially,the maximum inhibitory rate,73.0 ％ appeared in the 200 μmol/L group.HE staining showed that the number of MCF-7 cells decreased,hyperchromatic nuclei and apoptotic bodies appeared after treatment with osthole for 72 h in a significant dose-effect manner.Flow cytometric analysis revealed that osthole could induce extensive apoptosis in MCF-7 cultures after treatment for 72 h compared with normal group (P ＜ 0.05,P ＜ 0.01).In particular,when the concentration of osthole reached 50 μmol/L,the proportion of early apoptotic cells was significantly increased in a dose-dependent manner (P ＜ 0.01),especially.The maximum apoptosis rate (46.2±9.0) ％ appeared in the 200 μmol/L group,which was consistent with the results obtained from MTT assays.Moreover,osthole could significantly increased PPARγand FXR mRNA and protein expressions (P ＜ 0.01).Conclusion These data suggest that osthole could inhibit the proliferation of breast cancer MCF-7 cells and promote its apoptosis,which might be associated with the regulation of PPARγ and FXR-mediated target genes involved in cell growth and metabolism.

Objective To explore the short term treatment effectiveness and the side-effect of radiotherapy combined with two kinds of chemotherapy scheme on nasopharyngeal carcinoma patients with stage Ⅲ and Ⅳa.Methods One hundred and fifty nasopharyngeal carcinoma cases with stage Ⅲ/Ⅳa were randomly divided into A and B group.Patients in A group (75 cases) were received radiotherapy combined with 2 courses ((21-28) d/course) paclitaxel (135 mg/m2) + cis-platinum complexes (DDP) 80 mg/m2 chemotherapy concurrently,while patients in B group (75 cases) were received radiotherapy combined with 6 courses DDP 30 mg/m2 per week chemotherapy concurently.The short term treatment effectiveness and the sideeffect of radiotherapy combined with two kinds of chemotherapy scheme were observed.Result After the treatment,the primary lesion complete remission(CR) rate in A group and B group were 68％ (51/75),52％ (39/75).The CR rate of lymph node of neck in A and B group was 64.0％ (48/75),48.0％ (36/75) and 45.3％ (34/75),20.0％ (15/75) of primary lesion and lymph node of neck.The differences were significant(x2=4.25,3.90,10.94 ;P ＜0.05).After 3 months of treatment,there was no significant difference between A and B group in terms of CR rate of the primary lesion,lymph node of neck and primary lesion and lymph node of neck (P ＞0.05).During the treatment,the rate of bone marrow depression at grade Ⅲ in A group and B group were 38.67％ (29/75) and 21.33％ (16/75),21.33％ (16/75) and 6.67％ (5/75) in terms of the rate of grade gastrointestinal reaction at stage Ⅲ,46.66％ (35/75) and 21.33％ (16/75) regarding of oral cavity mucomembranous injury at stage Ⅲ,21.33％ (16/75) and 9.34％ (7/75) in terms of the rate of radioactivity skin destruction at stage Ⅲ.All differences were significant (P ＜ 0.05).During the short-term follow up (1-3 years),both the rate of local recurrence and the rate of metastasis in A group was as same as that in B group(P ＞0.05).Conclusion During the treatment,the side-effect of approach of paclitaxel (135 mg/m2) + DDP 80 mg/m2 in stage Ⅲ/Ⅳa nasopharyngeal carcinoma patients is more severity than that of DDP 30 mg/m2 per week chemotherapy.However,there is no significant difference in terms of the short term treatment effectiveness.The prospective efficacy needs to be further investigation.

Objective To study the relationship between the level of serum thrombomodulin (TM ) ,radiation dose-volume factors with acute radiation pneumonitis (ARP) .Methods 54 patients with lung cancer were given the routine 3 -dimensional conformal radiation therapy(3DCRT) and chemotherpy ,20 cases received the concurrent radiochemotherapy and 34 cases were performed the the sequential chemotherapy .The serum TM level was measured with enzyme-linked immunosorbent assay(ELISA) before radio-therapy(B-RT) and at 30 Gy(M-RT) in radiotherapy .The ARP grade was evaluated according to the criteria of the Common Ter-minology Criteria for Adverse Events(CTCAE v3 .0) by the National Caner Institute(NCI) ,grade 2 or more was taken as ARP . The relationship between the serum TM level ,dose-volume factors with ARP was analyzed .Results 20 cases (37% ) had ARP .12 cases got grade 2 ARP and 8 cases had grade 3 .The occurrence rates of ARP in the minimal lethal dose (MLD) Gy <10 and >10 groups ,V5 < 50% and ≥ 50% groups ,V10 < 40% and ≥ 40% groups ,V20 < 25% and ≥ 25% groups ,V30 < 13% and ≥ 13%groups ,TM decrease group and TM increase group after 30 Gy radiation were 8% vs .62% ,7% vs .69% ,21% vs .75% ,28% vs . 56% ,15% vs .57% and 50% vs .13% respectively ,the differences had statistical significance (χ2 = 16 .83 ,22 .29 ,14 .05 ,3 .97 , 10 .08 ,6 .46 ,P<0 .05);in the ARP group and non-ARP group ,MLD ,V5 ,V10 ,V20 and V30 were (12 ± 2) vs .(9 ± 2) ,(58 ± 10) vs .(43 ± 10) ,(42 ± 8) vs .(30 ± 8) ,(23 ± 3) vs .(19 ± 6) ,(15 ± 4) vs .(11 ± 4) respectively ,the differences had statistical signifi-cance (t= -4 .96 ,-5 .27 ,-5 .70 ,-3 .37 ,-3 .61 ,P<0 .05) .Conclusion Multiple dose-volume parameters are associated with the occurrence rate of ARP .The patients with decreased serum TM level after radiotherapy are liable to develop ARP .

OBJECTIVETo compare the therapeutic effects between CHOP-PVP and CHOP protocols for non-Hodgkin's lymphoma (NHL).

METHODSOf 79 NHL patients, 40 received CHOP-PVP and 39 received CHOP protocol. Kaplan-Meier method was used for survival rate and Cox regression model for prognostic factors.

RESULTSThe complete remission rate and overall response rate were 57.5% (23/40) and 87.5% (35/40) in CHOP-PVP group and they were 33.3% (13/39) and 69.2% (27/39) in CHOP group. There was a significant difference (P < 0.05) in the complete remission rate and overall response rate between the two groups. The main toxicity was myelosuppression. The leukocytopenia rate was 82.5% in CHOP-PVP group and 71.8% in CHOP group (P > 0.05) with no fatality in either group.

CONCLUSIONCHOP-PVP protocol may be more effective for non-Hodgkin's lymphoma than CHOP protocol without increasing toxicity.

Adolescent ; Adult ; Antineoplastic Combined Chemotherapy Protocols ; therapeutic use ; Child ; Cyclophosphamide ; therapeutic use ; Doxorubicin ; therapeutic use ; Female ; Humans ; Lymphoma, Non-Hodgkin ; drug therapy ; Male ; Middle Aged ; Prednisone ; therapeutic use ; Retrospective Studies ; Survival Rate ; Treatment Outcome ; Vincristine ; therapeutic use

Objective To investigate the clinical status of disease self-management ability in patients with chronic hepatitis B liver fibrosis and to analyze the effect of gratitude,social support and perceived stress on the ability.Methods Totally 236 patients with chronic hepatitis B liver fibrosis were selected from Guangzhou Red Cross Hospital by convenient sampling from January 2016 to June 2017 and investigated with the general information questionnaire,the Chronic Hepatitis B Self-Management Scale,the Gratitude Resentment and Appreciation Test (GRAT),the Social Support Rating Scale and the Perceived Stress Scale-Chinese (CPSS).PASW Statistics 18.0 and AMOS 18.0 were used to analyze the effects.Results The disease self-management score in patients with chronic hepatitis B liver fibrosis was (94.41 ± 16.78).According to correlation analysis,gratitude,social support and perceived stress were positively correlated with disease self-management (r=0.327,0.339;P ＜ 0.05);while perceived stress was negatively correlated with disease self-management (r=-0.574,P ＜ 0.05).The multiple linear regression analysis and model fitting showed that gratitude had direct effect on disease self-management (β=0.314);social support had direct influence (β=0.354) and indirect (β=0.199) effect on it;and perceived stress had direct (β=-0.567) and indirect (β=-0.058) on it.Conclusions The patients with chronic hepatitis B liver fibrosis show a relatively poor disease self-management ability.Clinical medical and nursing staff shall cultivate the patients' gratitude,mobilize their social support,reduce their perceived stress and improve their disease self-management ability.