Both AM1 semi-empirical quantum chemistry method and HF/3-21g* ab initio method were employed to get related parameters or descriptors, particularly, the parameters of the solvation energy delta G with polarizable continuum model, for 42 anti-HIV 5-phenyl-1-phenylamino-1H-imidazole derivatives with known cytotoxicity. With parameters of quantum chemical calculation and traditional ones, 2 multiple linear regression models were obtained. The better regression equation has a high correlation coefficient (r = 0.938) and a low standard deviation (s = 0.125) and the squared correlation coefficient Q2 of the cross-validation is 0.799 (literaure: 0.740) by leave-one-out method. The results have certain significance for the design of new anti-HIV-1 drugs with lower cytotoxicity.

BACKGROUND:Polychlorinated biphenyls inhibit the differentiation of P19 cels into cardiomyocytes. In the meanwhile, microRNAs play an important role in regulating cel differentiation.
OBJECTIVE:To explore the effect of microRNA-32(miR-32) on the polychlorinated biphenyls-inhibited differentiation of P19 cels into cardiomyocytes.
METHODS:P19 cels were co-cultured with 2.5 μmol/L polychlorinated biphenyls and 1% dimethyl sulfoxide. Afterwards, α-actinin, desmin, cTnI and GATA4 were identified by western blot assay.Wddwxrof polychlorinated biphenyls on the expression of miR-32 was evaluated by real-time PCR. Mouse eukaryotic vector expressing miR-32 was constructed by gene recombination technology,andtransfected into P19 celsfolowed byco-culturedwith2.5 μmol/Lpolychlorinated biphenylsand1% dimethyl sulfoxide. Then, expressions of differentiation-related proteins were detected by western blot assay.
RESULTS AND CONCLUSION:Polychlorinated biphenylsinhibited the differentiation of P19 cels into cardio myocytes anddecreased the miR-32 expression. Cel lines overexpressing miR-32 was successfuly established in mice.Furthermore, we found thatoverexpression of miR-32 weakens the inhibition of polychlorinated biphenyls to the differentiation of P19 cels into cardiomyocytes.

Objective To discuss the repairing methods of the wound after upper lip lesion excision.Methods The wound after upper lip lesion excision was repaired by expanded pedicled submental flap.The 3 cm-long incision was located in 1 cm to sub-mandible.The 100 ml expander was placed beneath the platysma,and the aqueducts and spigots of the expanders were laid out of the skin.After complete expansion,the spastic scars of the upper lip and nasal bottom were resolved,the nasal columella and upper lip were put back to the normal position.The pedicled submental flap was transferred to the wound after upperlip excision according to the size of the wound.The pedicle was severed after 3 weeks.Results There were 5 cases of the expanded pedicled submental flap to repair the wound after upper lip excision.The flap survived without complications.The appearances were satisfied by the patients.Conclusions The method of the expanded submental flap is suitable for the wound after upper lip excision.

Nanomaterials appear to be promising for a number of applications in in-vitro diagnostics, mainly due to the biocompatibility, specific surface and conduction activity. The use of nanostructures as diagnostic tools has the advantage of very low limit of detection achievable, high sensitivity, strong selectivity and the possibility to fabricate point-of-care diagnostic devices. With the problems of nanotechnology solved, nanomaterials had already put a broad impact in the field of clinical medical examination.
Nanostructures ; Nanotechnology

Objective To evaluate the clinical effect of exercise therapy on patients with osteoporosis according to osteoporosis quality of life scale(OQOLS)and the changes in biochemical markers of bone metabolism.Methods Totally 94 patients with primary osteoporosis were randomly divided into 2 groups:the intervention group [exercise therapy (Wu Xing Jian Gu Cao) with calcium/vitamin D supplementation for 90 days] and the control group (only calcium/vitamin D supplementation for 90 days].OQOLS and the changes in biochemical markers of bone metabolism were observed before and after treatment.Results Compared with before treatment,25-hydroxy vitamin D[25-(OH) D]levels were increased in control group (33 cases) and intervention group (29 cases) after treatment [(61.2± 11.1) mmol/L vs.(48.1±26.2)mmol/L,both P＜0.001],and the enhanced level was higher in the intervention group than in the control group (P＜0.05).Compared with before treatment,bone alkaline phosphatase (BALP) was decreased in control and intervention group after treatment (both P＜0.05).There were significant differences in OQOLS in both groups between before and after treatment except for the function of physical activities in intervention group (P＜0.05).Conclusions The basic and exercise therapy can both increase [25-(OH) D] level,reduce BALP,and have clinical effects on bone metabolism,while exercise therapy has an improvement in osteoporosis quality of life in patients with osteoporosis.

Objective To discusses the methods of the case selection and monitoring and diagnosis and treatment to selective non-operative management of closed splenic injuries .Methods The clinical data and results of 98 cases from October 1999 to Octo-ber 2011 with closed splenic injuries managed non-operative treatment were analyzed retrospectively .Results There were 90 cases (91 .8% ) conservative successfully ,5 cases(5 .1% ) transit operation because hematoma increase and bleeding continuously during therapeutic observation and 2 cases(3 .1% ) died from multiple injuries merge infection and multiple organ failure .Conclusion Most of the closed splenic injuries below level Ⅱcan be treated by non-operative management ,the effect and prognosis determined by the reasonable case selection and monitoring conditions and diagnosis and treatment .

Objective Through smdying the distribution of the Sappan acetic ether extract in transplanted heart of rats,to discuss selectivity of sappan in donor's hearts.Methods Improved Ono model was used to replicate the heart transplantation model of rats.Successfully operated rats were separated into 2 groups:a model group and a sappan group.Distributions of sappan in transplanted heart were observed by HPLC-FPC.Results One kind of original substance.of sappan was detected in transplanted heart sample,but not in un-transplanted hearts.Conclusion The substance of sappan may have selectivity in transplanted heart.

Objective:To investigate the association of the rsl801133 polymorphisms of the methylenetetrahydrofolate reductase (MTHFR)gene and rs2236225 polymorphisms of the methylenetetrahydrofolate dehydrogenase(MTHFD1)gene with non-syndromic cleft lip with or without cleft palate (NSCL/P)in Chinese population of Shanxi Province.Methods:The rsl801133 polymorphism of MTHFR gene and rs2236225 polymorphism of MTHFD1 gene were examined by PCR-RFLP in 265 patients with NSCL/P and 276 healthy controls.Data were statistically analysed.Results:The genotypic distribution of rsl801133 and rs2236225 was not deviated from the Hardy-Weinberg equilibrium.There was no significant difference in allele frequencies of rsl801133 and rs2236225 variants between patients with NSCL/P and healthy individuals(P <0.05).Conclusion:The polymorphism of MTHFR gene and MTHFD1 gene was not associated with NSCL/P in Chinese population of Shanxi Province.

Objective:To investigate the mechanism of sinomenine (SIN) in inducing the immunosuppressive effects of rat-derived dendritic cells (DCs).Methods:The bone marrow-derived precursor cells from Wistar rats were cultured in vitro. The morphological differences between sinomenine treated DCs (sinomenine modified group, SIN group) and conventional induced DCs (conventional induced group, control group) were observed under microscope. The CD phenotype of DCs was detected by flow cytometry. DCs were induced maturation by lipopolysaccharides (LPS) stimulation. The impact of SIN on the expressions of Toll-like receptor (TLR)2, TLR3 and TLR4 on the DCs surface were detected by flow cytometry. Results:In the conventional induction group, the cells showed clusters or suspension growth, with obvious granular sense on the cell surface; while in the sinomenine induction group, the cells were clustered together, with no significant change in cell volume and morphology. The relative expressions of CD80 and CD86 were 70.7% and 71.3% in the conventional induction group, while 51.7% and 49.4% in the SIN group. The relative expression of TLRs on DCs in SIN + LPS group was TLR2 (51.2±0.34)%, TLR3 (50.3±0.14)%, TLR4 (52.1±0.16)%, which were significantly lower than those in LPS group [(94.35±0.16)%, (97.55±0.16)%, (94.6±0.12)%].Conclusions:SIN may induce immune tolerance by inhibiting the maturation of DCs via inhibiting the TLRs signaling pathways.

Objective To investigate the efficacy and safety of enriched-calorie formula in post-operative infants with congenital heart disease and malnutrition.Methods All malnourished infants less than 6 months diagnosed congenital heart disease: ventricular septal defect and had undergone surgery in Guangzhou Women and Children`s Medical Center from December 1,2014 to May 30,2015 were included in this study.All cases were randomly divided into intervention group(energy-enriched formula,intervention group)and control group(standard formula,control group)for enteral nutrition intervention and observed for 3 months.Body mass,body length,upper arm circumference,blood prealbumin(PA),retinol binding protein(RBP),and B-terminal pro-brain natriuretic peptide(NT-proBNP)were measured before and after ICU,after discharge,and 1 month and 3 months after operation.Results Fifty-one cases were in intervention group and 50 cases in control group,respectively.There were no significant differences in body mass,body length,arm circumference,PA,RBP,mean enteral nutrition starting time,mechanical ventilation time,length of ICU stay,hospitalization time,and average fluid intake between the two groups(all P>0.05).The average caloric intake in intervention group was significantly higher than in control group [(437.24±6.68)kJ vs.(312.43±86.22)kJ,P=0.001].There was no significant difference in NT-proBNP,PA,and RBP at different time points between the two groups(all P>0.05).The improvement of nutrition in intervention group was significantly higher than that in control group at 1 month(25.0％vs.4.9％,P=0.011)and 3 months(64.1％vs.15.7％,P<0.001)after operation.Body mass increased in intervention group [(0.067±0.348)kg] compared with that in control group,and decreased [(0.125±0.425)kg] in control group(P=0.015).Body weight[(5.46±1.36)kg vs.(4.80±1.01)kg,P=0.008],weight for age Z score(WAZ)(-2.79±1.28 vs.-3.75±1.27,P<0.001),and height for weight Z score(WHZ)(-2.47±1.43 vs.-3.62±1.77,P=0.001)one month after surgery were significantly higher than those before operation.Body weight [(6.78±1.42)kg vs.(5.72±1.01)kg,P<0.001] arm circumference [(12.80±1.17)cm vs.(12.00±0.90)cm,P<0.001],WAZ(-1.60±1.17 vs.-3.10±1.40,P<0.001),height for age Z score(HAZ)(-1.41±1.63 vs.-2.10±1.41,P=0.034),and WHZ(-0.86±1.31 vs.-2.59±2.13,P<0.001)of the two groups at 3 months postoperative were significantly higher than those before operation,and the growth rate of intervention group was faster than control group.There were no significant adverse reactions in both groups.Conclusion Calorie-enriched formula powder can help malnourished infants to catch up after congenital heart disease surgery.