Objective] To discuss the inner experiences of occupational injury of laboratory animal workers, and provide basis for conducting targeted occupational protective education and health management. [Methods] The phenomenological methodology was used in the study. 12 laboratory animal workers were participated in non-structured interview regarding the experiences of occupational injury. [Results] 3 themes were found including:category of occupational injury(physical injury, chemical injury, biological injury); emotional experiences of occupational injury(fears and concerns, helplessness and self-abasement); help most needed(more attention, knowledge supports, advanced and convenient protective equipment and hardware facilities). [Conclusion] Management of experimental animal industry should lay great emphasis on occupational health and protection of laboratory animal workers, increase both financial and material resources, and enhance occupational protection education, in order to maximize bad physical and psychological effects from occupational injury.

Objective To observe the changes of brain neurotransmitters in patients with vasovagal syncope (VVS) with encephalofluc-tuogram technology (ET). Methods From August, 2015 to December, 2016, 30 patients with VVS were selected as case group, 30 controls matched with sex and age were selected from the outpatients without syncope. They were detected the function of gamma aminobutyric acid (GABA), glutamate (Glu), 5-hydroxytryptamine (5-HT), acetylcholine (Ach), norepinephrine (NE) and dopamine (DA) with ET. Results There was no significant difference between the two groups in the values of GABA, Glu, 5-HT, Ach and DA (t<1.680, P>0.05), while the values of NE was higher in the case group than in the control group (t=-3.552, P<0.001). Conclusion VVS may be related to the high level of activity of NE in the brain.

Objective:For severe skin defects which are deep to dermis, engineered skin with epidermis and dermis (bilayered) is required. Based on the success of engineering epidermis with GT/PCL electrospun membranes, our study was to investigate whether this membrane could be also used for engineering bilayered skin graft.Methods:From 2013 to 2019, we first prepared three GT/PCL electrospun membranes with different proportion (70∶30; 50∶50; 30∶70) in our laboratory; the biocompatibility of the membrane was evaluated in vitro by seeding fibroblasts or keratinocytes on the membranes. Then the outcome of GT/PCL membranes repairing skin defects in the nude mouse was investigated.Results:Cell attachment and proliferation were significantly improved with increase of gelatin. Histological analyses showed that bilayered skin engineered with GT/PCL (70∶30) group could form relatively better structure after 3 weeks of cultivation in vitro. Further in vivo transplantation studies revealed that scaffolds were not degraded in all three groups, indicating that these materials were not suitable for engineering bilayered skin although they had good biocompatibility.Conclusions:The higher gelatin membranes possess better biocompatibility. Further in vivo transplantation studies reveal that bilayered skin engineered with GT/PCL membranes is able to repair skin defects in the nude mouse.

OBJECTIVETo investigate the efficacy and adverse effect of DCF regimen with subsequent S-1 maintenance chemotherapy in patients with advanced gastric cancer (AGC).

METHODSSixty AGC patients without disease progression after 4 to 6 cycles of DCF regimen as the first-line chemotherapy were randomized into maintenance group and control group (30 patients each). The patients in the maintenance group received maintenance chemotherapy with S-1 (40 mg/m(2), twice daily for 14 days; 21 days for a treatment cycle) until disease progression or with intolerant toxicity, and those in the control group received optimal supportive care.

RESULTSThe response rate (CR+PR) was 33.3% in the maintenance group, significantly higher than that in the control group (3.33%, P<0.05), and the disease control rate (CR+PR+SD) also differed significantly between the two groups (73.3% vs 46.7%, P<0.05). The median time to progression was 7.9 months in the maintenance group and 6.8 months in the control group, with median overall survival time of 13.8 and 11.7 months, respectively (P>0.05). The most common adverse effect in the maintenance group included nausea, vomiting, leucocytopenia, and hand-foot syndrome; no death occurred in relation to the therapy.

CONCLUSIONS-1 maintenance chemotherapy, with a tolerable toxicity profile, can improve the RR, DCR and median time to progression in AGC patients who respond to DCF regimen, but its efficacy still awaits further evaluation.

A whole-cell catalyst using Escherichia coli BL21(DE3) as a host, expressing L- threonine dehydratase from Escherichia coli, and co-expressing leucine dehydrogenase from Bacillus cereus and glucose dehydrogenase from Bacillus subtilis for cofactor regeneration, was constructed and used for one-pot production of L-2-aminobutyric acid (L-ABA) and D- gluconic acid from L-threonine and D-glucose. We used shake-flask culture to study the whole-cell catalytic condition including temperature, pH, proper permeabilization of cells and optimal wet cells amount. Moreover, the whole-cell catalyst was cultured in 5-L fermentor by fed-batch fermentation, and 164 g/L L-threonine and 248 g/L D-glucose were converted to 141.6 g/L L-ABA and 269.4 g/L D-gluconic acid. The whole-cell catalyst is promising to fulfill industrial requirements for L-ABA and D-gluconic acid.

OBJECTIVE： To evaluate the medication of elderly inpatients receiving multiple medication， to evaluate the effects of pharmaceutical care provided by clinical pharmacists， and to provide reference for clinical drug use of elderly patients. METHODS： The elderly inpatients receiving multiple medication were selected from Beijing Friendship Hospital Affiliated to Capital Medical University during Oct. 2018 to Feb. 2019. The process of pharmaceutical care for elderly inpatients was established and developed through the CGA team of the elderly. PCNE classification system was used to analyze drug-related problems； Bayliff tool was used to evaluate the harmfulness of drug-related problems； Morisky questionnaire was used to analyze medication compliance. Drug use was followed up 3 months after discharge to evaluate the effect of clinical pharmacist’s intervention. RESULTS： A total of 71 elderly inpatients with multiple medication were included， 73.24％ of them （52 patients） suffered from 54 drug-related problems， 32 of which were related to therapeutic effects （59.26％）， 13 （24.07％） drug adverse events （possible）， 9 unnecessary drug therapy problems （16.67％）. There were 69 causes of pharmaceutical related problems， of which 58 （84.06％） were doctor’s orders. The main causes were drug selection （36.23％）， drug dosage （24.64％） and drug dosage form （20.29％）. Totally 143 interventions were conducted by clinical pharmacists， including 102 successful interventions， with success rate of 71.33％. The highest acceptance of intervention was adverse drug events reporting（100％）， followed by patient level （97.56％）， doctor level （65.12％） and drug level （52.83％）. Among 54 pharmaceutical-related problems， the most potential hazards were grade 1 hazards， involving 35 problems （64.81％）. The score of medication compliance in patients who received medication education from clinical pharmacists was （6.19±0.58）， which was significantly higher than （4.13±1.62） at the initial stage of admission （P＜0.05）. Follow-up results showed that 6 patients discontinued drugs by themselves， and 13 patients took drugs additionally by themselves. CONCLUSIONS： Drug related problems were common in elderly inpatients receiving multiple medication. Clinical pharmacists can establish a feasible pharmaceutical care process suitable for clinical needs according to the actual clinical situation. With the help of relevant evaluation tools such as relevant drug criteria， drug instructions and drug software， and at the same time， according to the physiological and pathological conditions of patients， they can cooperate with clinicians to select suitable therapeutic drugs for elderly patients to reduce the phenomenon of unreasonable medication and multiple medication， so as to improve the effectiveness and safety of drug use in the elderly.

Objective : To investigate the cross⁃sectional associations of serum interleukin( IL) Ⅳ18 with cartilage volume , cartilage defects , bone marrow lesions ( BML) and biomarkers of cartilage degradation in patients with knee osteoarthritis (OA) , and to provide new ideas and new methods for clinical diagnosis and treatment. Methods: The study included 151 patients with knee OA , a general questionnaire survey was conducted , and the knee strucral was photographed by magnetic resonance imaging (MRI) . The cartilage volume was measured by OsiriX software in 3D⁃FLASH sequence , and cartilage defect and BML were determined in T2⁃weighted sequence. Serum IL-18 and matrix metalloproteinase ( MMP) Ⅳ3 , 13 levels were measured by enzyme⁃linked immunosorbent assay(ELISA) . SPSS software was used for statistical analysis. Results : In multivariable analyses , serum IL⁃18 level was consistent at divided part of joint (femorotibial joint and the patella femoral joint , all P < 0. 05) . Serum IL⁃18 level was positively associated with cartilage defect and BML at media femorotibial area (all P < 0. 01) . Serum IL⁃18 level was positively associated with MMP⁃3 (β = 0. 31 , 95% CI:0. 001 - 0. 010) and MMP⁃13 (β = 0. 86 , 95% CI:0. 08 - 0. 10 , all P < 0. 01) . CI:0. 08 - 0. 10 , all P < 0. 01) . Conclusion Serum IL⁃18 level is negatively associated with cartilage volume and Serum IL⁃18 level is negatively associated with cartilage volume and positively associated with cartilage defect , BML , MMP⁃3 and MMP⁃13 , suggesting IL⁃18 may play a significant role duce the injury of article cartilage in patients with knee OA and delay the progression of disease.