Objective To investigate the distribution of camptothecin(CPT),tryptophan synthase(TSB),and tryptophan decarboxylase(TDC) in Camptotheca acuminata seedlings.Methods The CPT content,TSB and TDC activities in different organs of C.acuminata seedlings subjected to different nitrogen forms treatments by sand culture in greenhouse were determined by HPLC.Results The CPT content in the young leaves of C.acuminata seedlings with different N-forms was significantly higher than that in other organs(P

Objective To assess the effects of treating varicose vein with endovenous laser treatment(EVLT). Methods 810nm wavelength diode laser machine was used to treat 170 patients with varicose veins of the legs. After treatment, leg bandage compression was used for 2 days, and then changed to elastic stockings for 6-8 weeks. Patients were examined with Doppler ultrasound at follow-up. Results Post-operative follow up(1-12 months) of EVLT in 170 patients indicated 100% rate of greater saphenous vein closure on Doppler ultrasound, and no significant complications. All of the symptoms, disappeared or were significantly improved. Conclusions The results of EVLT of varicose veins have been favorable. This minimally invasive technique appears to be safe, and results in very effective closure of great saphenous vein.

OBJECTIVE:To establish a method for bacteria1 endotoxin test for Peramivir hydrate and sodium chloride injec-tion. METHODS:Maximum non-interference concentration of the sample with different batohes were used for interference test. was determined by interference test according to endotoxin gel method stated in Chinese Pharmacopiea (2010 edition)and bacterial en-edotoxintest by tachypleus amebocyte lysate from 2 manufact urers. RESULTS:The interference on bacterial endotoxin test could be excluded when the sample was diluted to 2.5 mg/ml and the limit of bacterial endotoxins was 0.5 EU/ml. CONCLUSIONS:The established method can be used to detect the bacterial endotoxin of Peramivir hydrate and sodium chloride injection.

Objective To analyze the expression characteristics of annexin A2 in dermal papilla cells (DPCs) with aggregative behavior.Methods Reverse transcriptase-polymerase chain reaction (RT-PCR) and Western blot were performed to measure the mRNA and protein expressions of annexin A2 respectively in DPCs with or without aggregative behavior.Results The mRNA expression level of annexin A2 was significantly higher in DPCs with aggregative behavior than in those without aggregative behavior (0.50 ± 0.15 vs.0.35 ± 0.19, t =8.26, P ＜ 0.05).Western blot showed that annexin A2 had two isoforms, including one isoform with a relative molecular mass of 40 000 and the other one with a relative molecular mass of 36 000.The annexin A2 isoform with a relative molecular mass of 40 000 was highly expressed in both DPCs with aggregative behavior and those without aggregative behavior, while the other isoform was only expressed in DPCs with aggregative behavior.Conclusion Annexin A2 may be closely related to the aggregative growth of DPCs.

OBJECTIVETo investigate the effect of total flavonoids of Scutellaria baicalensis Georgi (TFSB) on exogenous expression of influenza A virus nucleoprotein (NP) in HeLa cells.

METHODSHeLa cells were transiently transfected with the empty vector pcDNA3.1(+) or pcDNA3.1(+)/NP vector harboring influenza A virus NP. The pcDNA3.1(+)/NP-transfected cells were treated with TSFB and the expression of influenza A virus NP in the cell supernatant was measured using colloidal gold immunochromatography 48 h after the transfection; fluorescent quantitative RT-PCR was performed to measure the starting copy number of NP gene.

RESULTSThe cells transfected with pcDNA3.1 (+)/NP with and without TFSB treatment were positive for NP expression. Fluorescent quantitative RT-PCR showed that the starting copy number of NP gene in pcDNA3.1(+)/NP-transfected cells was (8.90±2.53)×10⁶ copies/µl, showing no significant difference from that of (6.15±1.49)×10⁶ copies/µl in pcDNA3.1(+)/NP-transfected cells with subsequent TFSB treatment (P>0.05).

CONCLUSIONTFSB treatment does not obviously affect exogenous influenza A virus NP gene expression or its protein synthesis in HeLa cells.

Flavonoids ; pharmacology ; Gene Expression ; HeLa Cells ; Humans ; RNA-Binding Proteins ; biosynthesis ; genetics ; Scutellaria baicalensis ; Transfection ; Viral Core Proteins ; biosynthesis ; genetics

The clinical or experimental study proves that Chinese medicine such as Tripteryglum wilfordii, Lignum Sappan, Caulis Sinomenii, Radix Trichosanthis and Herba Artemisiae Annuae have good immunosuppressive activity. Further researches on the immunosuppressive active components from Chinese medicine have been the main direction in recent years. The recent researches on immunosuppressive effect and possible mechanisms for the monomers such as triperine, triptolide, bazilein, potosappanin A, sinomenine, trichosanthin and artemisinin extracted from those Chinese medicine are introduced in this review.
Animals ; Artemisinins ; pharmacology ; therapeutic use ; Diterpenes ; pharmacology ; therapeutic use ; Drugs, Chinese Herbal ; pharmacology ; therapeutic use ; Epoxy Compounds ; pharmacology ; therapeutic use ; Humans ; Immunosuppressive Agents ; pharmacology ; therapeutic use ; Morphinans ; pharmacology ; therapeutic use ; Phenanthrenes ; pharmacology ; therapeutic use ; Plants, Medicinal ; chemistry ; Trichosanthin ; pharmacology ; therapeutic use

Objective: To explore the effective application of ventilation at prone position on patients with severe acute respiratory distress syndrome(ARDS) at high altitude. Methods: A total of 19 severe ARDS patients in ICU of Qinghai Province People's Hospital were enrolled from February in 2016 to February. in 2018, all of them ventilated at the prone position, several indicators were assessed:heart rate (HR), respiratory (R), mean arterial pressure (MAP); blood gas indicators: arterial oxygen partial pressure (PaO₂), inhaled oxygen concentration (FiO₂), carbon dioxide partial pressure (PaCO₂), blood oxygen saturation (SpO₂), oxygenation index (PaO₂/FiO₂), PH, lung compliance, PEEP and so on, which assessed before and 12h, 24h, 48h, 72h after the ventilation. Results: FiO₂ and PEEP significantly declined at 12 h, 24 h, 48 h, 72 h after ventilation at the prone position. HR, MAP, R, PaO₂, PaCO₂, SPO₂, PaO₂/FiO₂, pH and lung compliance significantly improved (F=32.30,24.73, P < 0.05). Conclusions It was an effective method for ARDS patients to improve the oxygenation status and vital signs at the plateau with ventilation used at the prone position and probably nursing intervention, which have clinical application value.

Objective:To describe the trends of loss of muscle fiber thickness of the arm and calf.Methods:From April 2019 to July 2019, 58 patients admitted to ICU of Qinghai Provincial People's Hospital were enrolled. During ICU stay, the muscle fiber thickness in bilateral upper arm (biceps brachii) and bilateral calf (gastrocephus muscle) were measured by bedside color ultrasound every day.Results:The muscle fiber thickness of biceps and gastrocnemius on the left and right were (1.52 ± 0.37), (1.50 ± 0.34), (1.53±0.39), (1.51 ± 0.37) mm, respectively. The thickness of muscle fibers were (1.45 ± 0.35), (1.46 ± 0.37), (1.44±0.33), (1.41 ± 0.32) mm, which were significantly decreased in 48 h admitted to ICU ( t values were 2.106-4.711, P<0.05 or 0.01); and (1.43 ± 0.36), (1.44 ± 0.36), (1.44±0.32), (1.39 ± 0.32) mm in 72 h, which were significantly decreased than 24 h admitted to ICU ( t values were2.029-4.504, P<0.05 or 0.01). During 1 week admission to ICU , the muscle fiber thickness showed a continuous trend of decline, and the muscle fiber thickness of the left biceps, right biceps, left gastrocnemius and right gastrocnemius decreased by 8.38% (0.13/1.55), 10.19% (0.16/1.57), 9.87% (0.15/1.52), 11.11% (0.17/1.53), respectively compared with the ICU admission. The muscle fiber thickness of the left biceps, right biceps, left gastrocnemius and right gastrocnemius decreased by 9.87% (0.15/1.52), 9.33% (0.14/1.50), 9.15% (0.14/1.53), 11.26% (0.17/1.51), respectively. Conclusion:Muscle attenuation can be observed within 48h after ICU entry, and it tends to decrease with the extension of the length of hospital stay.

Objective:To investigate the current practice environment of male nurses in Qinghai province, and understand the professional environment and turnover intention of male nurses, provide ideas and theoretical basis for continuous improvement of the working environment of male nurses in hospitals.Methods:From September to October 2020, the practice environment and turnover intention of male nurses in Qinghai Province were investigated by using the method of convenience sampling and using the general data questionnaire, the Nurse Practice Environment Assessment Scale and the turnover intention table.Results:A total of 155 registered male nurses in Qinghai Province participated in this survey, and the overall evaluation score of the practicing environment of nurses in Qinghai Province was (74.38±22.63) points, among which the highest score was that nurses could write nursing records in time (85.24±20.99) points, and the lowest score was that nurses had the opportunity to participate in the internal management of the hospital (55.03±30.55) points. The total score of resignation intention was (14.34±4.35) points.Conclusion:The overall evaluation of the practicing environment of male nurses in Qinghai Province is fair, and their turnover intention is high. Nursing managers should attach importance to the cultivation of male nurses' feelings towards hospitals and professions, so as to reduce their turnover intention and stabilize the nursing team of male nurses.

Objective To investigate the anti-inflammatory effect and mechanism of sappanone A(SA)on lipopolysaccharide(LPS)-induced RAW264.7 cell model based on JAK2-STAT3 signaling pathway.Methods MTT assay was used to detect the effects of sappanone A,LPS and AG490 on RAW264.7 cell viability.The LPS-induced inflammatory model in RAW264.7 cells was established,and the secretion level of interleukin-6(IL-6)in the supernatant was detected by ELISA.mRNA expressions of IL-6,Janus kinase 2(JAK2)and signal transducer and activator of transcription 3(STAT3)were tested by RT-PCR.The protein expressions of JAK2,phosphorylated JAK2(p-JAK2),STAT3 and phosphorylated STAT3(p-STAT3)were determined by Western Blot.Results Compared with control group,IL-6 secretion level was significantly increased,mRNA expressions of IL-6,JAK2 and STAT3 were up-regulated,and protein expressions of p-JAK2 and p-STAT3 were increased(all P＜0.01)in model group.Compared with model group,high-dosed sappanone A(5 μg·mL-1)was significantly decreased the secretion of IL-6,down-regulated the mRNA expressions of IL-6,JAK2 and STAT3,and inhibited the protein expressions of p-JAK2 and p-STAT3(all P＜0.01).Conclusion Sappanone A may play an anti-inflammatory role by inhibiting the JAK2-STAT3 signaling pathway and hence inhibiting the secretion of IL-6.