Objective:To investigate the efficacy and safety of less invasive surfactant administration(LISA) of neonatal respiratory distress syndrome(NRDS).Methods:From July 2017 to December 2018, 50 premature infants with birth weight ≤1 500 g and/or gestational age≤32 weeks diagnosed as NRDS at the Fifth Medical Center of PLA General Hospital were randomly divided into LISA group( n=25)and INSURE group( n=25). The patients in LISA group was inserted fine duct into the trachea through direct laryngoscope under nasal continuous positive airway pressure (nCPAP) and pulmonary surfactant was injected.The INSURE group adopts endotracheal intubation-pulmonary surfactant-nCPAP was performed after unplugging.The changes of vital signs, blood gas indexes, adverse reactions and the incidence of complications were compared between two groups at different time points. Results:There was no significant difference in respiration, heart rate, systolic blood pressure, diastolic blood pressure and PaO 2, PaCO 2, BE, SpO 2 between two groups at different administration time points.Although the pH value of LISA group was lower than that of INSURE group, it was within the normal range.There was no significant difference in bronchopulmonary dysplasia, intraventricular hemorrhage, periventricular leucomalacia and other complications between two groups, and there was no death, air leakage, retinopathy of prematurity and pulmonary hemorrhage in both two groups.In addition, there was no significant difference in hospitalization days, total medical expenses, oxygen use time between the two groups(all P>0.05). Conclusion:Compared with INSURE technology, LISA technology has its feasibility for premature infants with NRDS, but the effectiveness and safety in the practical application need to be further confirmed.

Humans ; Hypertension, Pulmonary ; etiology ; Male ; Middle Aged ; POEMS Syndrome ; complications

Objective : To explore the mediating effect of sleep quality on mobile phone dependence and loneliness in university students, so as to provide evidence for prevention and intervention of mobile phone dependence. Methods : A survey was conducted from December 2019 and January 2020 among the students of Guangzhou Medical University. The general information questionnaire, mobile phone dependence index scale, UCLA loneliness scale and Pittsburgh sleep quality index scale were used to analyze the mediating effects of sleep quality on mobile phone dependence and loneliness. Results : A total of 575 questionnaires were distributed and 573 valid ones were collected, with an efficiency of 99.65%. The detection rate of 115 students with mobile phone dependence was 20.07%, and that of 203 students with sleep quality problems was 35.43%. The students scored ( 48.03±6.07 ) points in loneliness, and 405 of them had high level. Mobile phone dependence was positively correlated with loneliness and sleep quality ( r=0.299, 0.385, both P<0.05 ); loneliness was positively correlated with sleep quality ( r=0.553, P<0.05 ). Mobile phone dependence and sleep quality both could positively predict loneliness, mobile phone dependence could positively predict sleep quality, and sleep quality and gender had a significant interaction effect on loneliness ( all P<0.05 ). The mediating effect value of sleep quality on mobile phone dependence and loneliness was 0.290 ( 95%CI: 0.186-0.400 ) in males and 0.131 ( 95%CI: 0.084-0.187 ) in females. Conclusion Sleep quality has a mediating effect on mobile phone dependence and loneliness among university students. Male students are susceptible to the negative effects of mobile phone dependence.

Objective To investigate the changes of quantitative parameters of dynamic enhanced CT in non-small cell lung cancer before and after targeted therapy,and compare them with the traditional evaluation criteria,in order to find the parameters which can be exploited for timely,objective evaluation of the effect of targeted therapy.Methods The study included 21 patients with targeted therapy who had received dynamic enhanced CT before and after treatment.Enhancement time-density curves were obtained based on the CT values of the lesion at individual time points,and the functional indices:peak height (PH),the time to peak height (Tp),the ratio of PH of the mass to aorta (M/A) and perfusion value were calculated.The effects of the treatment on these indices were evaluated and compared with the effect of the treatment on lesion diameter. Results Twenty-one patients had 33 rechecking results. There was a statistically significant agreement between lesion diameter-based treatment evaluation and perfusion-based treatment evaluation ( U =8.761,P ＜ 0.01 ). The perfusion value decreased in patients with disease regression[before treatment:(0.28 ±0.11 ) ml · min-1 · ml-1,after targeted therapy(0.18 ±0.09) ml ·min-1 · ml-1,t =- 3.2722,P =0.0042],but increased in patients with disease progression[before treatment(0.21 ±0.08) ml · min-1 · ml-1,after targeted therapy:(0.34 ±0.11 ) ml · min-1 · ml-1,t =2.6064,P =0.0403].Conclusions On dynamic enhanced CT in non-small cell lung cancer patients after targeted therapy,perfusion value changed in the same trend as the diameter of tumor.The effectiveness of targeted therapy may be evaluated by perfusion value changes.

Objective: To chine and express the recombinant human endothelial monocyte-activating polypeptide-Ⅱ(EMAP-Ⅱ)and identify its anti-tumor biological activities.Methods: EMAP-Ⅱ_(147-312)was expressed by the expression vector pMAL-p2x and E.coli BL-21 and the product was purified.The production of tissue factor(TF)in human umbili- cal vein endothelial cell ECV-304 mediated by the recombinant EMAP-Ⅱwas determined by chemiluminescence sub- strate.The promoting effect of recombinant EMAP-Ⅱon TNF?-induced ECV-304 cell.Apoptosis was determined by flow cytometry.Its inhibitory effect on human pancreaic cancer cell SW1990 proliferation was determined by MTT method. Results:DNA sequencing verified that EMAP-Ⅱwas correctly cloned.The molecular mass of the protein identified by SDS-PAGE was consistent with the theoretic value.The productivity of recombinant EMAP-Ⅱwas 500?g per 1 g bacteria (wet mass).The purified product induced expression of tissue factor(TF)in ECV-304 cells;it also enhanced the sensi- tivity of ECV-304 cells to the apoptotic effect of TNF?([16.6?2.5]% vs[25.6?2.3]%,P

Objective To investigate the diagnosis value of the tissue strain imaging in myocardial dysfunction in systemic lupus erythematosus (SLE). Methods Sixty-two patients and sixty controls underwent conventional and tissue Doppler echocardiography. Peak strain and strain rate value during systolic and diastolic phases as well as E/A, left ventricular fraction shortening (LVFS), left ventricular ejection fraction(LVEF) were measured in both SLE and the control groups. Results ①E/A,LVFS and LVEF did not differ between SLE patients and controls( P ＞0.05). The systolic peak strain and strain rate of SLE patients were lower than those of controls but without significant differences( P ＞0.05). ②The diastolic peak strain and strain rate of SLE patients were significantly lower than those of controls (P ＜0.01). ③ The diastolic peak strain and strain rate of antiheart antibody (AHA) positive patients were significantly lower than those of negative ones( P ＜0.05). Conclusions Strain and strain rate combining with AHA can sensitively detect myocardial dysfunction of SLE.

OBJECTIVETo study the effect of endophytic fungi.

METHODA. formosanus, harvested after having been cultured for age, statistics were taken, fresh weight and dry weight were gained, and enzyme activities of chitinase, beta-1,3-glucase, phenylalanine ammonia-lyase and polyphenoloxidase were determined.

RESULTThe survial rates of A. formosanus inoculated with endophytic fungi was 100%. The effect of fungi on fresh weight was very significant (P < 0.01). The effect of fungi on dry weight was significant (P > 0.05). The four enzyme activities were enhanced by endophytic fungi, comparision with the controls.

CONCLUSIONSurvial rates of A. formosanus can be increased by using endophytic fungi in vitro culture.

Catechol Oxidase ; analysis ; Chitinases ; analysis ; Mycorrhizae ; physiology ; Orchidaceae ; enzymology ; growth & development ; microbiology ; Phenylalanine Ammonia-Lyase ; analysis ; Plants, Medicinal ; enzymology ; growth & development ; microbiology ; Symbiosis ; beta-Glucans ; analysis

Salviae Miltiorrhizae Radix et Rhizoma-Carthami Flos is a famous Chinese medicine pair (CMP). Salviae Miltiorrhizae Radix et Rhizoma can promote blood circulation for removing blood stasis, and Carthami Flos can promote blood circulation for removing meridian obstruction and remove blood stasis for relieving pain. The two herbs are important TCMs for activating blood. Danhong injection is the classic application of the two herbs compatibility, which was made from Salviae Miltiorrhizae Radix et Rhizoma and Carthami Flos with scientific formalation by extraction and refining. The CMP is used for treatement of organ flood insufficiency and ischemic infarction diseases. It can obviously relieving symptoms of angina pectoris, improve myocardial ischemia, regress atherosclerosis plaque, and inhibit thrombus. This paper elaberated the bio-active constituents, compatibility effects and action mechanism, and clinical applications of the CMP in order to further upgrade basic research and application levels of the CMP.
Animals ; Carthamus tinctorius ; chemistry ; Drug Compounding ; Drug Interactions ; Drugs, Chinese Herbal ; chemistry ; pharmacology ; Humans ; Medicine, Chinese Traditional ; methods ; Salvia miltiorrhiza ; chemistry

The impact of key physical properties on granulated products by the high-speed mixing wet method was studied. Andrographis extracts were utilized as the model drug. Four processing methods were adopted to prepare mixed powder of microcrystalline cellulose (MCC) and starch with the mass ratio 1:0.5, 1:1 and 1:2 by the high-speed mixing wet method. The properties of the prepared granules were evaluated with such indexes as granule yield, the ratio of lumps and fine powder, granule-AOR and granule-HR. The impact of key physical properties on granulated products was analyzed through stepwise regression analysis. The results showed that angle of repose, moisture content, pore volume, density and contact angle with water were key physical properties of the powder. The key physical properties of Chinese medical extracts powder are the important factor impacting granulated products made by the high-speed mixing wet method. In this study, the impact of key physical properties on granulated products of Chinese medical extracts was analyzed from the physical angle.
Andrographis ; chemistry ; Drug Compounding ; instrumentation ; methods ; Drugs, Chinese Herbal ; chemistry ; Particle Size ; Powders ; chemistry

Antineoplastic Agents ; chemistry ; Capillary Electrochromatography ; Chemistry, Pharmaceutical ; Drug Interactions ; Electrophoresis, Capillary ; methods ; trends ; Electrophoresis, Microchip ; Pharmaceutical Preparations ; metabolism ; Pharmacokinetics ; Platinum ; chemistry ; Stereoisomerism