Objective To preparemicroRNA-34 a loaded liposome and evaluate the targeting efficiency for lung cancer stem cells and effect on the treatment of lung cancer. Method The liposomes were prepared by thin film hydration method. The particle size,Zeta potential and entrapment efficiency were evaluated. Stability of liposome in serum was evaluated. The efficiency of cellular uptake on lung cancer stem cells in vitro was evaluated. The anti-proliferation efficiency of miLPs-34 a was evaluated by MTT assay. Tumor spheroids were used to evaluate anti-tumor ability of miLPs-34 a. Lung cancer stem cells were used to build orthotopictumor model, which were used to evaluate the effect of anti-cancer. Results The particle diameter of the miLPs-34 a was (136.55±11.4) nm with the Zeta potential of (21.45±4.55) mV. The entrapment efficiency of microRNA-34 awas 94.6%.the results demonstrated that the liposomes could keep stable in 50%serum for 24 h. miLPs-34 a uptaken by lung cancer stem cells were 3.1 times higher than that of microRNA-34 a(P<0.01). The MTT assay confirmed strong inhibitory effect of miLPs-34 a than microRNA-34 a(P<0.01). the inhibition of tumor spheroid confirmed strong inhibitory effect of miLPs-34 a than microRNA-34 a(P<0.01). The anti-tumor of miLPs-34 a was much more effectively than microRNA-34 a(P<0.01).Conclusion the microRNA-34 a loaded liposome could target to lung cancer stem cells and inhibit the proliferation of lung cancer stem cell. MiLPs-34 a, as a new nanometer drug, has a special application value for the therapy of lung cancer stem cell.

AIM: To study the chemical constituents of Elaeagnus pungens. METHODS: Chemical constituents were separated through chromatographic methods and their structures were elucidated by spectral analysis. RESULTS: Five compounds were isolated from the petroleum ether extract of leaves of Elaeagnus pungens Thunb.Their structures were elucidated as hentriantane(1),lupeol(2),?-sitosterol(3),oleanolic acid(4) and 3,5-dihydroxy4,7-dimethoxy flavone(5). CONCLUSION: Compounds hentriantane(1) and 3,5-dihydroxy-4,7-dimethoxyflavone(5) were isolated from this plant for the first time.

Diphtheria is an ancient disease.Since the implementation of enhanced program of immunization by WHO in 1978,the global incidence of diphtheria decreased sharply.There were no diphtheria cases reported in recent years in China,but there were still diphtheria cases and outbreak reported in surrounding countries.It is necessary to strengthen the laboratory diagnosis of diphtheria in China to prevent the recurrence and for early detection of emergent and imported diphtheria cases.Here in this review,the laboratory diagnosis of diphtheria and its progress were summarized.

OBJECTIVE:To establish the HPLC method for the content determination of cetirizine hydrochloride gel.METHODS:The assaying was conducted on a SinoChrom ODS-BP column with 0.02 mol?L-1 sodium dihydrogen phosphate-acetonitrile(60∶40)as mobile phase at a flow rate of 1.0 mL?min-1.The column temperature was 25 ℃;the detection wavelength was 231 nm and the sample size was 10 ?L.RESULTS:The linear concentration range of cetirizine hydrochloride gel was 0.100 4～4.016 0 ?g(r=0.999 9)with average recovery rate at 97.85%(RSD=1.57%).CONCLUSI-ON:The method is simple,accurate and reproducible,and it can be used for the quality control of cetirizine hydrochloride gel.

Treatment of senile diseases by Chinese patent medicine should prescribe according to physiological and pathological specialty of the aged. It's necessary for treatment according to syndrome differentiation associating with the disease,reasonable combination of drugs avoiding adverse reactions,gentle medicine character but not fierce,small medicine quantity but not great, the use of Chinese patent medicine mild and tonic used properly but not excessively.
Drugs, Chinese Herbal ; therapeutic use ; Geriatrics ; methods ; Humans ; Phytotherapy ; methods

A lot of basic and clinical studies have proved that limb remote ischemic preconditioning (RIPre) is a safe and effective means reducing perioperative myocardial reperfusion injury .However ,RIPre possesses specific protec‐tive window .Therefore ,researchers used repeated limb RIPre to prolong the protective window in order to explore a new prevention and rehabilitation measure for cardiovascular diseases .

BACKGROUND:Traditional treatment of tibia and fibula fractures complicated with skin soft tissue defect is mainly external fixation, wound debridement and dressing plus skin graft or skin flap transplantation after the infection is control ed and granulation grow. This method is disadvantageous due to high cost, great pain, long hospitalization stay, infection and necrosis, even the possibility of amputation.
OBJECTIVE:To explore the clinical efficacy of vacuum sealing drainage (VSD) and external fixator in the treatment of tibia and fibula open fractmes complicated with skin defects.
METHODS:A total of 38 patients with severe open fractures of tibia and fibula complicated with skin defects were selected from Benxi Central Hospital between January 2009 and September 2013. The size of skin defects was more than 5 cm2. After external fixation, the patients underwent complete debridement and dressing, fol owed by VSD treatment for 5-7 days. After granulation tissue grew and the wound became fresh, the patients received intermedite thickness skin graft. And 15 cases treated without VSD were retrospectively selected, serving as control group. The infection control rate and wound healing time in the two groups were compared.
RESULTS AND CONCLUSION:After 5-7 days of VSD treatment, VSD dressings were removed, wound infection was control ed, local wound granulation tissue was fresh. Both the wound and fractures were healed wel , no osteomyelitis or amputation occurred. Among the involved 38 patients, 23 cases were cured, 12 cases were effective, and three cases were ineffective. The total effective rate showed significant differences compared with the control group (92%vs. 53%;P<0.05). VSD can completely remove the wound secretions and necrotic tissue, improve local microcirculation, eliminate the infection, VSD plus external fixator and skin grating is a simple and effective method in treatment of tibia and fibula open fractures with soft tissue defects.

Recently,the techniques for proteomics have made remarkable progress.They are widely used in various fields of life sciences,providing strong technical supports for relevant researches.Especially,proteomics technology has made prominent contributions to drug development and mechanism studies,magnificently improving the efficiency of discovering new drugs.This paper summarizes the classical method and new technology of proteomics.Also,its applications in drug study,including targets screening,mechanism studies,drug toxicology,researches of resistance mechanisms and clinical medical studies have been reviewed.

80 years)in China is increasing.As a special type of hypertension,the hypertension in the very elderly has some specificities in pathogenesis,clinical manifestation,treatment and prognosis.The topic to effectively cure and prevent hypertension in the very elderly is increasingly emphasiced.This article presents an overview of recent progress in clinical characteristics,and treatment strategy related to hypertension in the very elderly.

Objective To analyze the clinical methods of type Ⅲ Pilon fracture internal fixation. Methods The internal fixation with steel plate were performed in 36 cases with Ruedi-AllgoWer type, Ⅲ Pilon fracture and all patients had early post-operative rehabilitation functional exercise. Results Thirty-six cases were followed up for an average period of 16 months. The fracture healed completely in all cases and the successful rates of good function reached 88.9% (32/36) according to YU Guang-rong's evaluation standard. Conclusion For Ruedi-AUgower type Ⅲ Pilon fracture, appropriate surgical time combined with internal fixation with steel plate and early post-operative function exercise showed satisfactory therapeutic effect.