Objective To understand the effect of cerium on the activity of SOD and CAT in Drosophila melanogaster.Methods Drosophila melanogasters were treated with cerium by adding cerium sulfate [Ce(SO4)2] into the culture medium at different concentrations(0,1,4,16,64,256 and 1 024 mg/L).The activity of SOD and CAT of the third-instar larvae were analyzed.Result Compared with the control,at 64-1 024 mg/L,the activity of SOD and CAT in the third-instar larvae significantly decreased and at 1-16 mg/L,the activity of SOD and CAT significantly increased Conclusion It suggested that cerium sulfate [Ce(SO4)2] has an oxidant toxicity to Drosophila melanogaster.

Objective To study the clinical application value of aspirator and electrocautery in dissecting Calot′s triangle in laparoscopic cholecystectomy(LC).Methods All patients underwent LC were divided into group A and group B according the detaching way in the operation.The Calot′s triangle were detached by electrocautery as group A and by aspirator as group B.Operative time,hemorrhage and complication between two groups were compared.Results The mean operative time was(28.5?7.6) minutes in group A and(21.1?4.3) minutes in group B.The mean hemorrhage was(13.9?(4.7)) ml in group A and(8.8?2.5) ml in group B.The complication of bile duct injury occurred in 2 cases in group A.No complication was found during or after surgery in group B.All patients were cured.Conclusion Aspirator and electrocautery are both suitable for skeletonizing the cystic duct and cystic artery in LC.

Objective To analyze clinical and pathological data of IgA nephrology patients with microalbuminuria and investigate risk factors of its prognosis.Methods Clinical and pathological data of IgA nephrology patients with microalbuminuria were confirmed with renal biopsy and follow-up time with ＞ 6 months of trace was reviewed retrospectively;24-hour urine protein quantification ＞ 1 g, normal serum creatinine level when renal biopsy turned into abnormal level, or doubled serum creatinine level was defined as end point of follow-up.Renal survival was calculated with Kaplan-Meier survival analysis, and risk factors of progression were analyzed with univariate and multivariate Cox regression models.Results A total of 96 patients was followed up successfully, with an average follow-up time of (35.6 ± 22.7) months, and 34 cases (35.42％) entered the endpoint.The 12-, 24-, 36-, 48-, 60-, and 72-month renal survival rate was 97.92％, 92.71％, 86.45％ , 81.25％ , 71.88％, and 64.58％, respectively.Urine proteins, abnormal serum creatinine, Lee's Ⅲ～ V, renal interstitial fibrosis, glomerular sclerosis, and crescentic body were independent risk factors to affect prognosis of IgA nephropathy with microalbuminuria.Conclusions Early and active control of urinary microalbumin, and acute kidney injury caused by treatment of crescentic formation could slow the progress of IgA nephropathy.

Objective:To analyze the relationship among hope trait, resilience and empathy of midwives, and to explore the mediating role of resilience between hope trait and empathy.Methods:A total of 370 midwives were investigated by general information questionnaire, Adult Hope Quality Scale, short version of Resilience Scale and Interpersonal Response Scale. Pearson correlation analysis was used to analyze the correlation among hope trait, resilience and empathy. Amos21.0 structural equation model was used to verify the mediating effect of resilience between hope trait and empathy. The mediating effects of empathy, hope and resilience were analyzed.Results:Hope trait was positively correlated with resilience and empathy ( r value was 0.504, 0.133, P<0.01 or 0.05), and resilience was positively correlated with empathy ( r value was 0.309, P<0.01) in midwives. Resilience partially mediated the relationship between hope trait and empathy, the mediating effect of resilience was 0.38. Conclusions:Managers should pay attention to the cultivation of midwives′ hope traits and psychological resilience, and actively improve the midwives′ psychological quality, so as to effectively improve the empathy ability and establish a harmonious and high-quality nurse patient relationship.

OBJECTIVETo evaluate the inhibitory effect of total bufadienolides from toad venom against H22 tumor in mice and preliminarily analyze the structures of the metabolites in tissues.

METHODHPLC and LC-MS were used for analysis of the chemical composition of TBFs. High, middle and low dosages of TBFs were orally administered or intra-peritoneally injected to H22 tumor-bearing mice for thirteen days. The animals were killed and the tumors were stripped and weighed. The metabolites in the tissues such as heart, liver, spleen, lung and kidney, were analyzed by HPLC and LC-MS.

RESULTThe chemical composition of TBFs were identified by comparison of the retention times with those of reference substances, on-line UV spectra and MS data. Its main components are concerned with gamabufotalin, arenobufagin, bufotalin, resibufagin, cinobufotalin, bufalin, cinobufagin and resibufogenin. TBFs had no obvious influence on body weight of H-22 tumor-bearing mice orally administered and the inhibition rate against tumor were 14.76%, 16.38% and 10.32% for low (5 mg x kg(-1)), middle (10 mg x kg(-1)) and high dosage (20 mg x kg(-1)), respectively. The mice intra-peritoneally injected with middle and high-dose of TBFs gained body weight slower than the control mice on the 5th day and recovered on the 13th day. The inhibition rate against tumor were 17.30%, 19.80% and 40.95% for low (1.5 mg x kg(-1)), middle (3 mg x kg(-1)) and high dose (6 mg x kg(-1)), respectively. The inhibitory effect took on dose-dependent manner. Based on the HPLC analyses on heart, liver, spleen, lung and kidney, bufadienolides were found in the liver tissue and 11 compounds of them were tentatively identified by LC-DAD-MS.

CONCLUSIONTBFs by oral administration had no inhibitory effect against H22 tumor in mice, however, TBFs by intra-peritoneal injection displayed the significantly inhibitory effect, accompanying some toxicity for early duration of the study. The identification of bufadienolides in the liver provides a good basis for the further investigation of the metabolic pathways of TBFs in vivo.

Amphibian Venoms ; chemistry ; Animals ; Antineoplastic Agents, Phytogenic ; administration & dosage ; metabolism ; Bufanolides ; administration & dosage ; metabolism ; Carcinoma, Hepatocellular ; drug therapy ; metabolism ; physiopathology ; Cell Line, Tumor ; Cell Proliferation ; drug effects ; Drug Administration Routes ; Female ; Humans ; Male ; Mice ; Mice, Inbred ICR ; Neoplasm Transplantation

Objective:To investigate the status of post-traumatic growth and its afffecting factors in middle-aged and young patients with type 2 diabetes, in order to carry out clinical intervention for reference.Methods:A general data questionnaire, Posttraumatic Growth Inventory, Perceived Social Support Scale, and Connor-Davidson Resilience Scale were used to survey 222 middle-aged and young patients with type 2 diabetes hospitalized from December 2020 to March 2021 in Shandong First Medical University Affiliated Center Hospital, Shandong Provincial Qianfoshan Hospital, Liaocheng People′s Hospital.Results:The total score of Posttraumatic Growth Inventory, Perceived Social Support Scale, and Connor-Davidson Resilience Scale was (45.20 ± 12.90), (42.73 ± 10.16),(51.41 ± 10.60) points in middle-aged and young patients with type 2 diabetes. Regression showed that treatment mode, medical payment mode, social support, and psychological resilience were the main influencing factors of post-traumatic growth levels in middle-aged and young patients with type 2 diabetes ( P<0.05), which could explain 42.3% of the variation. Conclusions:Middle-aged and young patients with type 2 diabetes have grown at low level. Medical staff should concentrate on the positive psychology of patients and improve their level of social support and resilience to promote the production of post-traumatic growth.

Eight compounds were isolated from Bufonis periostracum by repeated column chromatography on silica gel, ODS and Sephadex LH-20 and their structures were characterized as palmitatic acid cholesteryl ester (1), cholesterol (2), 5alpha, 8alpha-epidioxycholesta-6-en-3beta-ol (3), cholest-5-en-3beta, 7beta-diol (4), cholest-7-en-3beta, 5alpha, 6beta-triol (5), 3-octaddecyloxy-1, 2-propanediol (6), isisamide (7) and bufothionine (8) on the base of spectral analysis. Compounds 1-8 were isolated from Bufonis periostracum for the first time and compounds 3, 5, 6, 7 were obtained from Bufo bufo gargarizans and Bufo genus for the first time. The bioassays showed all tested samples displayed no antitumor activity against the cell lines such as A549, BeL 7402, HGC-27 and HL-60, except the control compound bufalin.
Animals ; Antineoplastic Agents ; pharmacology ; Bufo bufo ; metabolism ; Bufonidae ; metabolism ; Humans

Children with specific language impairment(SLI)have normal cognitive abilities but experience language deficits.The heterogeneity of language disorders makes SLI children optimal subjects for investigating the correlation between language ability and theory of mind.This paper provides a comprehensive review of foreign em-pirical studies examining the relationship between language ability and theory of mind in SLI groups from various perspectives.The findings indicate that specific types of language disorders exhibit delayed development in theory of mind,which is closely associated with their language ability deficits.Among all linguistic elements,syntactic de-fects demonstrate the most concentrated evidence regarding their impact on theory of mind.It is noteworthy that al-though SLI children offer valuable insights into the correlation between language and theory of mind,further investi-gation is still required to comprehensively comprehend this association.The present study also provides recommenda-tions for future research endeavors in this domain.