Nonhuman primates(NHPs)are susceptible hosts of tuberculosis(TB).After infection,TB not only spreads among monkey populations but can also spread to humans.An effective vaccine to protect NHPs from TB has not been developed.Although prevention and control protocols have matured and reduced the incidence of TB among NHPs in captivity,outbreaks continue to occur.This article summarizes the worldwide epidemiological situation of TB in monkeys in captivity and in the wild,analyzes the advantages and disadvantages of commonly used detection method,and summarizes the most common practices of TB prevention and control in NHPs.Our findings indicate that TB poses a great threat to NHPs,underscoring the importance of raising awareness of TB among NHP breeding workers and managers.Additionally,our result provide a basis for improving current management procedures and offer valuable insights for TB diagnosis,prevention,and control in NHPs in China.

This study aims to develop a method to detect bovine multi-cytokines based on flow cytometry. Previously we have prepared and screened monoclonal antibodies against bovine cytokines IFN-γ, IL-2, TNF-α, IP-10 and MCP-1. These bovine cytokine monoclonal antibodies were fluorescently labeled, and the combination of antibody and cell surface molecules were used to develop the method for detecting bovine multi-cytokines. Subsequently, the developed method was used to determine the cytokine expression profile of Mycobacterium bovis BCG infected bovine peripheral blood mononuclear cells in vitro, and evaluate the cytokine expression level of peripheral blood CD4⁺ T cells of tuberculosis-positive cattle. The bovine multi-cytokine flow cytometry detection method can effectively determine the cytokine expression of BCG-infected bovine peripheral blood T lymphocytes. Among them, the expression levels of IFN-γ, IL-2, and TNF-α continue to increase after 40 hours of infection, while the expression levels of IP-10 and MCP-1 decreased. The combined detection of IFN-γ, IL-2, and TNF-α on CD4⁺ T lymphocytes in peripheral blood of cattle can effectively distinguish tuberculosis-positive and tuberculosis-negative samples. This method may facilitate evaluating the level of cellular immune response after bovine pathogen infection and vaccine injection.
Cattle ; Animals ; Cytokines ; BCG Vaccine/metabolism* ; Tumor Necrosis Factor-alpha/metabolism* ; Interleukin-2 ; Flow Cytometry/methods* ; Chemokine CXCL10/metabolism* ; Leukocytes, Mononuclear ; CD4-Positive T-Lymphocytes/metabolism* ; Tuberculosis ; Antibodies, Monoclonal/metabolism*

Objective To optimize the culture and fermentation conditions of the Penicillium aurantiocandidum Z12 strain, a fungal strain with molluscicidal actions against Oncomelania hupensis, so as to provide the basis for the research and development of molluscicidal active substances from the P. aurantiocandidum Z12 strain and its fermentation broth and large-scale fermentation. Methods The carbon source, nitrogen source and mineral salts were identified in the optimal culture medium for the P. aurantiocandidum Z12 strain with a single-factor experiment to determine the best fermentation condition for the P. aurantiocandidum Z12 strain. Factors that significantly affected the growth of the P. aurantiocandidum Z12 strain were identified using the Plackett-Burman design, and the best range of each factor was determined using the steepest climb test. Response surface analyses of temperature, pH value, seeding amount and liquid-filling quantity were performed using the Box-Behnken design to create a regression model for fermentation of the P. aurantiocandidum Z12 strain to identify the optimal culture medium. Results Single-factor experiment preliminarily identified the best culture medium and conditions for the P. aurantiocandidum Z12 strain as follows: sucrose as the carbon source at approximately 20 g/L, tryptone as the nitrogen source at approximately 5 g/L, K₂HPO₄ as the mineral salt at approximately 5 g/L, initial pH at approximately 8, temperature at approximately 28 °C, seeding amount at approximately 6%, and liquid-filling quantity at approximately 50 mL/100 mL. Plackett-Burman design showed that factors that significantly affected the growth of the P. aurantiocandidum Z12 strain included temperature (t = −5.28, P < 0.05), seeding amount (t = 5.22, P < 0.05), pH (t = −4.30, P < 0.05) and liquid-filling quantity (t = −4.39, P < 0.05). Steepest climb test showed the highest mycelial growth at pH of 7.5, seeding amount of 8%, and liquid-filling quantity of 40 mL/100 mL, and this condition was selected as the central point of response surface analysis for the subsequent optimization of fermentation conditions. Response surface analyses using the Box-Behnken design showed that the optimal conditions for fermentation of the P. aurantiocandidum Z12 strain included sucrose at 15 g/L, tryptone at 5 g/L, K₂HPO₄ at 5 g/L, temperature at 28.2 °C, pH at 7.5, seeding amount at 10%, and liquid-filling quantity at 35.8 mL/100.0 mL, resulting in 0.132 g yield of the P. aurantiocandidum Z12 strain. Conclusion The optimal culture condition for the P. aurantiocandidum Z12 strain has been identified, and the optimized culture medium and fermentation condition may effectively improve the fermentation yield of the P. aurantiocandidum Z12 strain.

Objective:To explore the spatial and temporal distribution patterns of emerging snail-infested sites in different environmental types in Yunnan Province.Methods:The data of snail-infested sites in Yunnan Province from 1950 to 2014 (from Yunnan Institute for Endemic Diseases Control and Prevention), were collected and sorted out, a spatial and temporal database on the distribution of emerging snail-infested sites were established, and the changes in the spatial and temporal distribution of emerging snail-infested sites in different environments types (ditches, tangerines, paddy fields, dry land, beaches and other environments) were studied by using spatial autocorrelation analysis and scanning statistics analysis.Results:From 1950 to 2014, the annual number of emerging snail-infested sites in Yunnan Province reached a peak (1 730) in 1955 and then showed a fluctuating downward trend. From 1993 to 2014, the number of emerging snail-infested sites remained below 100, and increased to 160 and 131, respectively, in 2004 and 2013. The longest mean duration of 43.85 years was recorded for the beaches environment for emerging snail-infested sites, followed by the paddy fields environment with a mean duration of 37.01 years, and the shortest mean duration of 20.44 years for the tangerines environment. Spatial autocorrelation analysis showed that there was a positive spatial correlation between the duration of emerging snail-infested sites of different environmental types (global Moran's I ranged from 0.43 to 0.64, P < 0.05). Scanning statistics analysis showed that emerging snail-infested sites of different environmental types had spatial and temporal aggregation ( P < 0.001), with 3- 6 clusters of statistically significant aggregation detected respectively. Conclusion:The emerging snail-infested sites in different environments types in Yunnan Province have spatial and temporal aggregation, and it is necessary to strengthen monitoring and prevention and control of the aggregation areas of different environment types to prevent further spread of the snail.

Objective:To explore the effect of educational intervention based on timing theory on mothers of premature infants.Methods:Using the convenience sampling method, 80 mothers of premature infants hospitalized in the Neonatology Department of Affiliated Hospital of Youjiang Medical University for Nationalities from May 2019 to October 2020 were included in this study. According to the time of admission, they were divided into the control group (42 cases) and the observation group (38 cases). The mothers in the control group were given routine educational guidance during the hospitalization of premature infants, while the mothers in the observation group were given comprehensive educational intervention based on timing theory on the basis of the control group. The mothers′ caring ability during the transition period, breastfeeding self-efficacy and breastfeeding rate at a month after discharge, and mother′s coping ability at 3 months after discharge were compared between the two groups.Results:There were 35 cases in each group completed the study. The observation group scored (100.86 ± 6.22) on the maternal care ability of premature infants in transition period, and the control group scored (89.51 ± 4.17), the difference between the two groups was statistically significant ( t=-8.97, P<0.05). The breastfeeding self-efficacy score of the observation group a month after discharge from hospital was (47.83 ± 2.54) points, which was higher than (41.20 ± 1.97) points of the control group, and the difference was statistically significant ( t=-12.21, P<0.05). The breastfeeding rate a month after discharge in the observation group was 62.9% (22/35), which was higher than 37.1% (13/35) in the control group, and the difference was statistically significant ( χ2=4.63, P<0.05). The maternal coping ability scores of the premature infants in the observation group and control group 3 months after discharge were (119.29 ± 6.03) and (113.66 ± 6.59) points respectively, and the difference between the two groups was statistically significant ( t=-3.73, P<0.05). Conclusions:The educational intervention based on timing theory can help mothers of premature infants master the nursing knowledge and skills, strengthen the mother′s transitional care ability and post-discharge coping ability, improve the breastfeeding self-efficacy and breastfeeding rate of premature infants, promote and development the growth of premature infants, worthy of clinical application.

Objective: : To observe the short-term efficacy and toxicity of apatinib monotherapy as well as docetaxel plus cisplatin in advanced gastric cancer. Method: : According to inclusion and exclusion criteria, 108 patients with advanced gastric cancer in the 105th Hospital of PLA were selected. According to random table grouping method, there were 54 cases in group A and 54 cases in group B. Patients in group A received continuous oral administration of apatinib alone, while group B received docetaxel plus cisplatin chemotherapy, with 3 weeks as a cycle and 4 cycles for a course. The efficacy and side effects were evaluated 3 months later. Results: : In groupA, there were 4 cases of CR, 25 cases of PR, 18 cases of SD and 7 cases of PD; the ORR was 53.7% and DCR was 87%. In group B, there were 2 cases of CR, 19 cases of PR, 21 cases of SD and 12 cases of PD; the ORR was 38.9% and DCR was 77.8%. The ORR and DCR in group A were significantly better than those in group B (P<0.05). The main adverse reactions were gastrointestinal reaction, myelosuppression, hypertension and hand-foot syndrome, all of which were grade 1 to 2; The incidence of bone marrow suppression and gastrointestinal reaction in group A was lower than that in group B (P<0.05), while the incidence of hand-foot syndrome and hypertension in group B was lower than that in group A (P<0.01). Conclusion： ：The short-term efficacy of targeted therapy of apatinib alone was better than that of docetaxel combined with cisplatin chemotherapy, and the toxicity and side effects of both regimens were controllable;Apatinib can be used as the primary regimen for the treatment of advanced gastric cancer.

We established an ELISPOT for bovine interferon-gamma (BoIFN-γ), and applied it in the diagnosis of bovine tuberculosis (bTB). Monoclonal antibodies that can bind with native BoIFN-γ were screened as the coating antibody and detecting antibody. After optimization of detecting conditions including coating antibody concentration, cell number, and detecting antibody concentration, the ELISPOT assay was established. Peripheral mononuclear cells (PBMCs) isolated from 30 cows were co-cultured with PPD, and detected with the ELISPOT assay. The optimal conditions of ELISPOT assay were 2.5 μg/mL coating antibody 2G5, 2.5 x 10(5) cells/well, and 1 μg/mL detecting antibody Bio-5E11. In these 30 cows tested both with the ELISPOT assay and the BOVIGAM kit, 11 cows were proved to be positive in ELISOPT assay with the sensitivity of 78.6%, and 12 cows were proved to be negative in ELISOPT assay with the specificity of 75%. The ELISPOT assay for BoIFN-γ could be used to detect bTB efficiently and it might be an alternative method for the diagnosis of bTB.
Animals ; Antibodies, Monoclonal ; Cattle ; Enzyme-Linked Immunospot Assay ; veterinary ; Female ; Interferon-gamma ; isolation & purification ; Sensitivity and Specificity ; Tuberculosis, Bovine ; diagnosis

Antigen Rv2628 of Mycobacterium tuberculosis is associated with latent tuberculosis infection. In this study, Rv2628 was prokaryotic expressed and purified, its immunological characteristics was evaluated with macrophage cell line RAW264.7 and BALB/c mice. The results show that Rv2628 was mainly expressed in form of inclusion body confirmed by SDS-PAGE, and could react with rabbit anti-H37Rv polyclonal antibody detected by Western blotting assay, indicating that the protein had an effective immunoreactivity. The interactions between Rv2628 and macrophage cell line RAW264.7 confirmed that it could effectively induce cells to produce pro-inflammatory cytokines, the relative expression level of IL-6 mRNA was higher than the control group in 1-12 h. BALB/c mice were subcutaneously immunized with Rv2628 protein, the production of IFN-gamma and IL-4 in the spleen cells was determined by Sandwich ELISA, in the Rv2628 immunized group, the level of IFN-gamma was significantly higher than that of IL-4 (P < 0.000 1). It indicated the protein induced Th1-tendency immune responses. At the same time, Rv2628(11-30) peptide used as coating antigen, the murine serum antibody titer detected by indirect-ELISA was 1:1 600, which demonstrated that Rv2628 could also induce humoral immune responses. In summary, Rv2628 could induce specific pro-inflammatory cytokines, affectively induce strongly Th1-tendency immune response and humoral response, it could be a potential target for developing subunit vaccine against TB. In addition, it laid foundation for probing the cross-talk between M. tb and host.
Animals ; Antibodies, Bacterial ; blood ; Antigens, Bacterial ; immunology ; Cell Line ; Electrophoresis, Polyacrylamide Gel ; Interferon-gamma ; immunology ; Interleukin-4 ; immunology ; Interleukin-6 ; immunology ; Macrophages ; immunology ; Mice ; Mice, Inbred BALB C ; Mycobacterium tuberculosis ; Th1 Cells ; immunology ; Tuberculosis ; immunology

OBJECTIVETo investigate the effect of removing bacterial endotoxin in the key processes of Reduning injection.

METHODThe content of bacterial endotoxins was detected by kenitic-turbidimetry and the removal efficacy was studied before and after using 0.8% of activated carbon and ultrafiltration with molecular weight cut-off of 10 x 10(3).

RESULTThe adsorption rate of bacterial endotoxins was 78.7% by using activated carbon, while the removal efficacy of bacterial endotoxins was 99.6% with ultrafiltration membrane at cut-off molecular weight 10 x 10(3).

CONCLUSIONThe key technology can effectively guarantee the safety of Reduning injection.

Objective To study changes of neuroendocrine in patients with ST segment elevation acute myocardial infarction (STEMI) after using distal protection device (GuardWire PlusTM). Method Seventy patients with STEMI received percutaneous coronary intervention (PCI) in Municipal Hospital Qingdao, during September 2004 to December 2006. They were randomdy (random numbs) enrolled in this prospective and control study. All the patients were divided into 2 groups: the distal protection device group (GW) and the non-distal protection device group (NGW).The inclusion criteria were:onset within 6 hours, chest pain more than 30 minutes without response to nitroglycerin, two or more adjacent ST segnents elevated over 0.2 mv,the proximal or middle diameter of infarction artery over 3 mm, and the increased plasma creatine kinase. The exclusion criteria were fluctuation in hemodynamics, severe heart failure, arteriopathy of left main coronary artery, mechanical complications of acute myocardial infarction and multi-vessel disease scheduled for coronary artery bypass. The plasma levels of endothelin(ET) , plasma renin activity (PRA),aldosterone (ALD),angiotensin Ⅱ (Ang Ⅱ), norepinephrine (NE) and epinephrine (E) were measured on the day of operation and on the 1st,2nd,3rd and 5th day after operation, respectively. The t-test was used to compare those neuroendocrine elements between two groups. Results There were no differences in plasma levels of all the neuroendocrine elements between two groups before operation. Compared with the NGW group, the levels of neuroendocrine elements in the plasma rapidly decreased in the GW group at 1 d after the operation ( P ＜ 0.05). Conclusions In patients with ST segment elevation acute myocardial infarction, the distal protection device can decrease the changes in neuroendocrine.