The effects of solid-state fermentation (SSF) and submerged fermentation (SmF) and the addition of olive oil on the whole-cell lipase production by Rhizopus chinensis CCTCC M201021 were investigated.Compared with SSF, higher biomass, hydrolytic activity and synthetic activity were observed in SmF.By the addition of olive oil, the synthetic activity of whole-cell lipase in both fermentations was enhanced significantly, especially in SmF, while the biomass and the hydrolytic activity were also increased.Hence, olive oil serves as both carbon source and the inducer of lipases in fermentation.It was also found that the synthetic activity of whole-cell lipase was not accordant to the hydrolytic activity during both SmF and SSF, suggesting that isoenzymes with difference in lipase properties may be produced by Rhizopus chinensis.

Two lipase active fractions Lip1 and Lip2 were purified from the cell extract of Rhizopus chinensis CCTCCM201021.Both gave a single band on SDS-PAGE after using ammonium sulfate precipitation、Phenyl-Sepharose FF、DEAE-Sepharose FF and Sephadex G100 gel filtration chromatographies.The molecular masses of two lipases were 59.2kD and 39.4kD respectively.Lip1 and Lip2 showed optimal pH at 8.0 and 8.5 and their optimal temperatures were 40℃ and 35℃ respectively.The substrate specificity of the two lipases was obviously different.Lip1 was more specific to long chain fatty acid of p-nitrophenyl esters while Lip2 had a preference for the hydrolysis of short chain fatty acid of p-nitrophenyl esters.Lip1 had 1,3-position specificity for triacylglycerols hydrolysis while Lip2 had nonspecific position.Both lipases were stimulated by Ca 2+、Mg 2+ while SDS had strong inhibition on their activities.Lip1 and Lip2 had good stability in cyclohexane、hexane、heptane and isooctane(30% V/V).

Erythropoietin (EPO) is an active glycoprotein synthesized by kidney. The physiological function of regulat?ing the synthesis of erythrocytes by EPO makes it as a clinical drug for treatment of anemia resulted from chronic kidney fail?ure. However, its short biological half-life makes frequent administration, which limits its wide clinical utility since the tough burden and pain on patients. Therefore, the development of EPO derivatives with good efficacy, less adverse reaction and long duration has been a hot spot in the field during several decades. There are currently many different variants of EPO derivatives including erythropoiesis stimulating agents (ESAs) on the market. This article aims to summarize the recent re?search progress in the development of erythropoietin derivatives, specially focusing on EPO mimetic peptides (EMP).

Objective To analyze the clinical characteristics of systemic lupus erythematosus (SLE) patients with septic arthritis.Methods Twelve SLE patients with septic arthritis admitted to Peking Union Medical College Hospital from January 1990 to December 2012 were retrospectively analyzed.Results The median duration from onset of SLE to septic arthritis was 8.5 months (ranged from 1 to 120 months).All patients had received higher doses of steroid therapy (equal to prednisolone 1 mg ·kg-1 ·d-1) and immunosuppressant,and 5 of them had received methylprednisolone pulse therapy.The infectious manifestations included joint pain (all cases),swelling (5 cases),reduced joint function (8 cases) and fever (10 cases).All patients were oligo-arthritis.The hip and knee joints were most commonly involved.Three patients were infected by Salmonella,4 patients were infected by S.aureus,and 3 patients were infected by tuber culosis.Conclusion When SLE patients with long term steroid and immunosuppressant therapy developedacute joint pain and swelling,septic arthritis should be considered.Synovial fluid Gram stain,culture,blood culture and arthroscopy should be performed promptly.Appropriate antibiotics should be administered,and early treatment can improve the outcomes.

Objective To investigate the correlation between level of Titin antibodies (Titin-Ab) and patient's condition and different thymic pathological patterns in patients with myasthenia gravis (MG), and to assess its value in the diagnosis and prognosis of MG.Methods The levels of Titin-Ab in serum from 52 patients with MG (MG group), 18 cases with other neurologic diseases (NMG group) and 50 normal controls (NC group) were detected using enzyme-linked immunosorbentassay (ELISA). 10 cases with MG who received operation on thymus were tested again after therapy.Results The positive rate of Titin-Ab in MG group was 36.5%,but not present in MNG and NC groups.The MG group!was significantly higher than those in NMG group and NC group (all P

This article is to discuss the ethical principles in the diagnosis and treatment of periodontal diseases:①moral responsibility must be strong enough when examinating,diagnosing and curing;②skills should be mastered and improved;③characteristic of senile patients should be attached to.④right oral health education is obligatory.

In the course of hospital regrouping it is imperative to integrate medical functions, resource elements and hospital cultures. Yet the integration of hospital cultures plays a pivotal role, for the culture of a hospital is the basis of its survival and development and cultural integration can lead to the fusion of the staffs feelings, values and concepts and to the coordinated development of the hospitals hardware and software, which will produce greater benefits. Ways of cultural integration include: ①doing a good job of intention surveys and ideological persuasion prior to hospital regrouping; ②adopting different forms of cultural fusion for different forms of regrouping: with unbalanced regrouping, the cultures of the weaker hospitals should not be totally negated and attention should be paid to equality and impartiality, whereas with balanced regrouping, efforts should be made to enhance communications rather than to differentiate the primary and the secondary; ③giving full play to the role of informal organizations within the hospital in the fusion of different cultures.

Objective To find out universal problems in restructuring and explore relevant methodologies so as to provide the government with decision-making basis. Methods The method of partial quantification from statistics and operational research and the qualitative method from sociology were employed. Results Hospitals A and B assumed the functions of a second-tier hospital and satisfied the basic medical needs of District Z. With Hospital A being superior to Hospital B and inpatient service superior to outpatient service, the obstruction to the restructuring lay in the staffs of the two hospitals. If the restructuring should turn out to be successful, there would be more space for the expansion of their share of the medical market. The focus of the restructuring should be put on the advancement of technologies and the improvement of quality and efficiency. In particular, the basic medical needs of the residents in the areas concerned must be met. Conclusion In restructuring two hospitals, the model of loose cooperation and steady combination is recommended in the first place while the government ought to play the role of providing guidance, coordination and policy support.

OBJECTIVE: To evaluate the curative effect and costs of sequential therapy with cefuroxime for lower respiratory bacterial infection.METHODS: A total of 180 patients with lower respiratory bacterial infection were randomly divided into 3 groups: persistent intravenous drip group,sequential therapy group,and per os group.The therapeutic effects and the adverse drug reactions of the three groups were observed,and the data were subjected to cost-effective analysis in pharmacoeconomics.RESULTS: In persistent intravenous drip group,sequential therapy group,and per os group,the costs were(1 673.00?183.85),(1 268.10?112.25) and(994.80?102.65) yuan,respectively, the clinical effective rates were 93.33%,89.66%,and 69.35%,respectively,the cost-effectiveness were 1 792.56?196.97,1 414.34?125.20,and 1 434.46?109.79,respectively,and the incremental cost-effective ratios were in the intravenous drip group and sequential therapy group were 2 828.19?338.62 and 1 345.64?47.27,respectively as against per os group.CONCLUSION: Among the schemes,sequential therapy is the optimal one.

AIM: To compare the clinical results of suture method and partial eyelash resection treating for pediatric eyelid trichiasis, and screen an effective method for the treatment of pediatric lower eyelid trichiasis.
METHODS: Fifty-six cases of pediatric patients with lower eyelid trichiasis were randomly divided into a control group and an observation group in accordance with the method of drawing lots, and each group was 28 cases. The control group was treated with suture method, and the observation group was treated with partial eyelash resection. The clinical efficacy, patient satisfaction before and after treatment, and the incidence of complications were compared.
RESULTS:(1) The clinically total effective rate was 74%of the control group, which was 89% of the observation group, and there were statistical differences of the clinical efficacy between the two groups ( P<0. 05 ); ( 2 ) the satisfaction scores were (3. 89±1. 22) points and (6. 27±1-86) points of the the control group before and after treatment, which were ( 4. 00±1. 34 ) points and ( 8-95±2-34) points of the observation group, and there were statistical differences of the two groups before and after treatment (P<0. 05), and the scores of the observation group were higher than that of the control group ( P<0-05);(3) complications such as swelling and stitches off appeared in both groups, and the rate was 21% in the control group, which was 11% in the observation group, and there were statistical differences between the two groups (P<0. 05).
CONCLUSION: The treatment of children with lower eyelid trichiasis, suture method is simple and can be performed under local anesthesia in collaboration with children, but with a higher relapse rate, some patients required reoperation;partial resection of eyelashes can be more thoroughly solve the problem of pediatric eyelid trichiasis with low recurrence rate, but children need to be under general anesthesia with some of big risk. So partial resection of eyelashes is unsuitable for using in clinical practice widely and can be used in special cases.