[Factors associated with selection of breast-conserving surgery in early female patients with breast cancer]

Objective: To analyse the factors associated with the selection of breast- conserving surgery in early female patients with breast cancer. Methods: The targeted patients were females diagnosed with early-stage breast cancer and received surgical treatment at Fujian Provincial Hospital from January 1, 2015, to December 31, 2019. The targeted patients' clinical, demographic, and social-economic characteristics were extracted from the hospital health information system. Relevant information of their attending surgeons was collected through a smart-phone based self-respond online survey. We performed multivariate logistic regression to explore the associated factors with breast-conserving surgery (BCS) decision-making. Results: The age of the patient and attending surgeon and the economic development level of the patient's residence area were the associated factors with BCS decision-making of female early-stage breast cancer. By controlling the other factors unchanged, patients from middle-income areas were more likely to accept BCS (OR=1.91, 95%CI: 1.01-3.62, P=0.05) than those from low-income areas. When the attending surgeon was at the average age of 45 years old, increasing of 1 year age of patient led to 4% decrease of the probability of BCS (95%CI: -0.07 - -0.01, P=0.01). When the patient was at the average age of 52 years old, increasing of 1 year age of the attending surgeon reduced 10% of the probability of BCS (95%CI: -0.19 - -0.01, P=0.03). The interaction effects related to the age of attending surgeon and patient for some observations to choose BCS were statistically significant, and the average interaction effect was 0.06% (Z=2.11, s_x =0.000 3, P<0.05). Conclusion: To promote breast-conserving surgery in the indicated early female patients with breast cancer, it is necessary to consider factors from both the surgeons and the patients.

[Association between parental socioeconomic status and preschoolers' consumption of sugar-sweetened beverages]

Objective: To explore the association between parental socioeconomic status (SES) and preschoolers' consumption of sugar-sweetened beverages (SSB). Methods: In June 2018, all preschoolers from 15 kindergartens were selected from the jurisdiction of Education Commission in Dongcheng District of Beijing by using an equal-proportion stratified cluster sampling method in the study. A self-designed questionnaire was used to investigate the parents of preschoolers to obtain the basic information of preschoolers and parents, the consumption situation of preschoolers' sugar-sweetened beverages and the perception of parents to SSB. A tatol of 3 217 preschoolers were finally included in the analysis. A generalized structural equation model was used to analyze the relationship between preschoolers' consumption of sugar-sweetened beverages and their parents' socioeconomic status and the mediating effect of their cognition of sugar-sweetened beverages. The size of mediating effect was estimated by using deviation correction non-parameter percentile Bootstrap method. Results: The age of 3 217 preschoolers was (4.23±0.67) years, of which 52.6% (n=1 692) were boys, and 77.62% (n=2 497) were SSB consumers. Among the parents of 3 217 preschoolers, fathers and mothers accounted for 24.90% (n=801) and 75.10% (n=2 416), and the M (P₂₅, P₇₅) scores of SES were 66.7 (62.5, 69.5) and 69.5 (64.6, 71.4), respectively. The proportion of parents who took the initiative to learn about their children's consumption of SSB, lacked confidence in restricting preschooler's consumption of SSB and read nutrition labels before purchasing food was 74.08% (n=2 383), 82.90% (n=2 667) and 36.24% (n=1 166), respectively. The generalized structural equation model showed that after adjusting for preschoolers' gender, age, body mass index (BMI) of preschoolers and their parents, preschoolers' consumption of SSB was negatively associated with their parents' SES score [path coefficient (95%CI):-4.69×10^-2 (-6.56×10^-2,-2.69×10^-2) ]. The mediating effect of parents' perception of SSB consumption could explain 48.71% of the total effect [path coefficient (95%CI):-2.28×10^-2 (-3.54×10^-2, -1.10×10^-2)]. Conclusion: The consumption of SSB in preschoolers is negatively associated with their parent's SES, and this relationship is partially mediated by parent's perception of SSB consumption.

[Prognosis factors analysis of 56 cases of non-Hodgkin's lymphoma originating from the nasopharynx]

Objective:To investigate the prognosis of non-Hodgkin's lymphoma originating from the nasopharynx.Method:The clinical data of 56 patients with a primary diagnosis of non-Hodgkin's lymphoma originating from the nasopharynx treated between January 2010 and December 2015 were studied.The association between clinical parameters and survival rate was evaluated by Kaplan-Meier method and Cox regression model.Result:The 1,3,5-year overall survival were 91.1%, 73.1%,and 49.6% respectively.Single factor analysis displayed that age,Ann-Arbor staging,iactate dehydrogenase,combined with B symptoms at the time of diagnosis,international prognostic index and the expression level of Ki-67 were related to the prognosis factors.Multivariate analysis showed that the international prognostic index greater than or equal to 2 points and the positive rate of Ki-67 greater than or equal to 60% were the independent risk factors for the prognosis of non-Hodgkin's lymphoma originating from the nasopharynx.Conclusion:International prognostic index and the expression level of Ki-67 may be independent prognostic factors for non-Hodgkin's lymphoma originating from the nasopharynx.

[CD23 on B cells determines Breg-facilitated IL-10 secretion as well as activation of T cells]

Objective:To explore whether or not the IL-10 mediated by Bregs modulate the secreting T cells activation by the anti-CD23 antibody, to find a new target for the treatment of allergic rhinitis. Method:The rat model of allergic rhinitis was established. Anti-CD23 antibody was used to observe the behavioral changes, passive skin allergen test, enzyme-linked immunosorbent assay, hematoxylin and eosin staining, immunofluorescence and flow cytometry serological indicators, systemic and nasal mucosa. Result:Compared with the blank control group, allergic rhinitis group rats sneezing, flexible nose, runny nose, subcutaneous mass increases;The levels of IL-10, IFN-γ and Bregs in blood decreased, the levels of IL-4, CD23+ B cells and CD4+ T cells increased;Nasal mucosa CD23 fluorescence intensity increased, CD19 and IL-10 fluorescence intensity decreased. Compared with the allergic rhinitis group, the number of sneezing, the frequency of nasal flexion, the symptoms of runny nose and the subcutaneous mass in the antibody intervention group were significantly improved;The levels of IL-10 in the blood, IFN-γ, the percentage of Bregs cells in whole blood increased, the levels of IL-4, CD23+ B cells and CD4+ T cells decreased;Nasal mucosa CD23 fluorescence intensity decreased, CD19 and IL-10 fluorescence intensity increased. There is little difference between the two routes of administration. Conclusion:The enhanced expression of CD23 on B cells is involved in the development of allergic rhinitis. The anti-CD23 antibody may control the symptoms and signs of allergic rhinitis. There is no significant difference between subcutaneous administration and improved nasal-drip way. As the preferred method of anti-CD23 antibody application, anti-CD23 is expected to become a new method to control and treat allergic rhinitis. Anti-CD23 antibodies can exert a therapeutic effect by T cell activation,which rely on the Bregs-mediated secretion of IL-10.

Dissipation and residue of clothianidin in granules and pesticide fertilizers used in cabbage and soil under field conditions

The single application of 0.5 % clothianidin granules, a novel formulation, was used to control pests in vegetables under a high dose. In this article, residues of clothianidin in cabbage and soil samples under field conditions from Guangzhou, Nanning, and Qianjiang were determined by HPLC. The terminal residues of clothianidin in cabbage were less than the limit of detection (<LOD) at pre-harvest intervals of 30 days, and these values were lower than the maximum residue limit of 0.2 mg kg^-1 in cabbage set by the Codex Alimentarius Commission. To test on the influence of the pesticide fertilizers' effect on clothianidin residual, clothianidin granules and fertilizers of chicken manure, urea, and organic fertilizer were mixed into different pesticide fertilizers through their normal field using dosage and evaluate residual influence of clothianidin in different formula. After analysis of variance of the effect factors, the effect of different pesticide types on half-life was not significant, but the effect of sample types was significant. Clothianidin granules and pesticide fertilizers could be safely applied in cabbage under a single high-dose administration.

[Impact of carbon dioxide pneumoperitoneum in operating rooms on the health of medical staffs]

Objective: To evaluate the impact of CO(2) pneumoperitoneum in operating rooms on the health of medical staffs. Methods: In June 2016, the thirty-three medical staffs in operating rooms were chosen as the object of the research.Seventeen people who took part in the pneumoperitoneum operation were selected as a exposure group and sixteen people who took part in the laparotomy operation were selected as a control group.Vital signs and arterial blood gases of medical staffs in the two groups were both measured in pre-operation and post-operation. Occupational Health Questionnaires were conducted to collect information on age, weight and postoperative symptoms. The level of CO(2) in operating room was determined by a portable infrared CO(2) analyzer. Results: Compared with the control group, the concentration of CO(2) in the exposed group was higherat T(1), T(2) and T(3) (t=22.227, 13.583, 17.408, P<0.05) . Heart rates and PaCO(2) in the exposure group raised greatly (t=2.132, 2.129, P<0.05) , while pH decreased (t=-3.015, P<0.05) . The differences between the two groups were statistically significant. Conclusion: The increase of mild acidosis and thesense of job burnout in medical staffs could be caused by CO(2) pollution in the operating rooms.

[Cloning of Cysticercus cellulosae AgB cDNA coding region]

OBJECTIVE

To amplify and clone Cysticercus cellulosae AgB cDNA coding region.

METHODS

The AgB cDNA was amplified by RT-PCR technique from the total RNA of Cysticercus cellulosae. It was cloned into the vector pUC118 and sequenced.

RESULTS

The PCR amplified product was a single band of 2.6 kb in size. The sequences of AgB cDNA coding region has 99.8% homology with that of Australian Cysticercus cellulosae, and their amino acid sequences have 99.3% homology.

CONCLUSION

Cysticercus cellulosae AgB cDNA coding region has been cloned successfully.

Attenuated lapinized chinese strain of classical swine fever virus: complete nucleotide sequence and character of 3'-noncoding region

The complete nucleotide sequence including precise 5'- and 3'-terminal non-coding regions (NCRs) of the attenuated lapinized Chinese strain (HCLV) of Classical Swine Fever Virus (CSFV) was determined from overlapping cDNA clones constructed by separated RT-PCR and rapid amplification of cDNA ends (RACE) methods. The genomic RNA of the HCLV strain consists of 12.310 nucleotides (nts) including 374 nts and 242nts in the 5'- and 3'-NCRs, respectively. It contains one large open reading frame (ORF) encoding a polyprotein of 3,898 amino acids with a calculated molecular weight of 437.6 kDa. There is one notable insertion of 12 continuous nts, CTTTTTTCTTTT in the 3'-NCR of HCLV genomic cDNA when compared with its parental virulent Shimen strain. Sequence alignment of partial 3'-NCR reveals two groups of CSFV vaccine strains carrying similar T-rich insertions at different positions in this region. Computer-predicted secondary structures suggest that T-rich insertion greatly change the structures and thus decrease the promoter functions of 3'-NCRs during the replications of these two groups of CSFV vaccine strains.

Influence of 3,4',5-trihydroxystibene-3-beta-mono-D-glucoside on vascular endothelial epoprostenol and platelet aggregation

AIM

To study the relationship between the inhibiting effect on platelet aggregation and the enhancing effect on epoprostenol (PGI2) released from vascular endothelium with 3,4',5-trihydroxystibene-3-beta-mono-D-glucoside (polydatin, Pol).

METHODS

After having been incubated with Pol, the incubating medium was withdrawn from the bottles with newborn umbilical vein endothelial cells (VEC group, trypsin digesting method) and added to the platelets (washing method). The medium withdrawn from the bottles without VEC was designated as control group. Reduction of platelet aggregation rates (PAR, turbidity method) and changes of 6-ketoprostaglandin F1 alpha (6-keto-PGF1 alpha) and thromboxane B2 (TXB2) (radioimmunoassay method) in the supernatant of the aggregated platelets induced by thrombin were scrutinized.

RESULTS

PAR in the control group showed no reduction, whereas PAR reduction (-10 +/- 10) and 6-keto-PGF1 alpha increase (108 +/- 30 ng.L(-1)) in the VEC group treated 10 min with Pol 0.41 mmol.L(-1) (vs that of distilled water, ie, 2 +/- 12 and 54 +/- 20 ng.L(-1)) occurred.

CONCLUSION

Increase of PGI2 from VEC by Pol was involved in its (Pol's) inhibition effect of platelet aggregation.

Reducing effect of 3,4',5-trihydroxystibene-3-beta-mono-D-glucoside on arterial thrombosis induced by vascular endothelial injury

AIM

To study the effect of 3,4',5-trihydroxystibene-3-beta-mono-D-glucoside (Polydatin, Pol) on rabbit arterial thrombosis.

METHODS

Rabbit arterial thrombosis was induced by vascular endothelial damage with trypsin.

RESULTS

It was showed that the moist weights of the thrombus were 6.6 +/- 1.8 and 4.8 +/- 1.6 mg in Pol 5 and 10 mg.kg-1 groups, respectively, which was lighter than that in control (10.9 +/- 1.9 mg, P < 0.05, P < 0.01); the platelet aggregation was inhibited simultaneously. In vitro, Pol 0.30-1.15 mmol.L-1 reduced TXA2 produced in platelets. It did not affect the production of PGI2 in cultured human umbilical vein endothelial cells.

CONCLUSION

Thrombosis was abated by Pol. The selective inhibition of production of TXA2 rather than PGI2, is one of the mechanisms involved.

[The immunophenotypic lymphocyte analysis of orbital lymphadenosis and its significance]

An immunophenotypic lymphocyte analysis of 56 cases of orbital lymphadenosis was performed with a panel of 10 monoclonal antibodies against the lymphocyte differentiation antigen by the streptavidin-peroxidase conjugate method to reveal that (1) all 15 cases of inflammatory pseudotumor and 32 of 33 cases of reactive lymphocyte hyperplasia manifested polyclonality of the constituent cells; (2) the immunophenotype of cells was monoclonal in 2 of 3 cases of atypical lymphocyte hyperplasia and diagnosis of malignant lymphoma (ML) were established; and (3) among 5 cases of ML, the cells were shown to be B-cells in 4 cases and T-cells in 1 case. These results suggested that immunophenotyping could be useful in differentiating the benign from the malignant orbital lymphadenosis and the histologic types of ML. The relationship between pathologic and immunologic classifications of orbital lymphadenosis was also discussed.

[Influences of 3,4,5-trihydroxystibene-3-beta-mono-D-glucoside on rabbits' platelet aggregation and thromboxane B2 production in vitro]

Platelet aggregation and thromboxane B2 (TXB2) production induced by arachidonic acid (AA) or Adenosine diphosphate (ADP) were studied by turbidimetry and radioimmunoassay in rabbits. 3,4,5-tri-hydroxystibene-3-beta-mono-D-glucoside (PD) 6.7-107.2 mumol/L inhibited platelet aggregation and the production of TXB2 as well. The inhibitions by PD were dose-dependent: 48-90% (AA-induced) and 43-69% (ADP-induced) for platelet aggregation; 50-87% (AA-induced) and 43-68% (ADP-induced) for TXB2. There were positive correlations between the inhibition of platelet aggregation and production of TXB2.

[Influences of 3,4,5-trihydroxystibene-3-beta-mono-D-glucoside on beat rate and injury of cultured newborn rat myocardial cells]

3,4,5-Trihydroxystibene-3-beta-mono-D-glucoside (PD) from Polygonum cuspidatum 0.05-0.45 mmol/L increased beat rate of myocardial cells from 100% to 112-220%. This action of PD 0.15 mmol/L was agonized by nisoldipine 0.1, propranolol 10 and phentolamine 1 mumol/L. PD (0.05, 0.15 mmol/L) decreased the lactate dehydrogenase (LDH) amount liberated by myocardial cells, from 98 +/- 11 IU/ml of deprivation of oxygen and glucose (DOG) to 55 +/- 16, 68 +/- 14 IU/ml (P less than 0.01) 6 h after injury of DOG; 77 +/- 9, 80 +/- 6 IU/ml (P less than 0.01) 9 h after injury of DOG. PD 0.15 mmol/L decreased the LDH amount liberated by myocardial cells, from 311 +/- 34 to 231 +/- 42 IU/ml (P less than 0.05) 9 h after injury of chlorpromazine (CPZ). It is suggested that PD can protect myocardial cells injured by DOG and CPZ.