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Objective To analyze the expression of interleukin 16 (IL-16) in atherosclerosis (AS) patients, and to study the roles of IL-16in the pathogenesis of AS.Methods Thirty AS patients in Affiliated Hospital of Jining Medical College from August 2015to August 2016were randomly selected as the case group and twenty-nine healthy subjects were selected as the healthy control group.Peripheral blood of the subjects were collected.IL-16levels were determined with enzyme-linked immunosorbent assay (ELISA).Reverse transcriptase-polymerase chain reaction was applied to analyze IL-16mRNA level.IL-16expression in the atherosclerotic plaque samples was detected with immunohistochemical analysis.IL-16expression in aortic atherosclerotic plaque of AS patients and atherosclerotic ApoE-/-mice were analyzed by immunohistochemical staining.The aortic plaque changes of AS mice injected intraperitoneally with recombinant IL-16were detected.Results Both IL-16protein levels and IL-16mRNA levels were higher in case group than those of healthy control group, the difference was statistically significant (P＜0.05).The IL-16mRNA was highly expressed in the atherosclerotic plaque.The aortic plaque area of the mice underwent IL-16intraperitoneal injection were decreased while the plaque stability increased.Conclusion IL-16levels elevated in both AS patients and AS mice, which suggested that IL-16might play aprotective role against AS.
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OBJECTIVE:To optimize Azelastine hydrochloride (AH) thermosensitive in-situ gel nasal drops formulation. METHODS:Using poloxamer 407(P407)and poloxamer 188(P188)as excipients,AH thermosensitive in-situ gel was prepared by cold solution method. The formulation was optimized by central composite design-response surface methodology using the amount of P407 and P188(g/100 ml)as factors and phase-transition temperature as index. Binomial expression was fitted,and pre-dicted and measured values were compared. RESULTS:The correlation coefficient R2 fitted by binomial expression was equal to 0.986 5. The optimal formulation was as follows as P407 for 20.414 4%,P188 for 5.035 4%,measured value of(30.81±0.02)℃, predicted values of 31 ℃,deviation of 0.61%. CONCLUSIONS:AH thermosensitive in-situ gel nasal drops formulation is opti-mized by central composite design-response surface methodology.
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Objective To identify the expression of a fusion gene GCA formed from GM-CSF gene and LMP2A gene of Epstein-Barr virus (EBV) in a recombinant BCG (rBCG) and to study its immunoge-nicity.Methods The rBCG was constructed to express the fusion gene GCA and the expressed products were detected by Western blot assay .ELISA was performed to measure specific antibody titers in serum sam-ples from mice immunized with rBCG .Lactate dehydrogenase assay was used to analyze the cellular immuni-ty of mice.A mouse model of EBV-positive gastric carcinoma was established to evaluate the therapeutic effects of rBCG.Results The target proteins of GM-CSF and LMP2A were successfully expressed in rBCG . The specific antibodies were detected in rBCG immunized mice as indicated by ELISA .The maximum anti-body titer reached 1 ∶27 900 [(326.5±7.8) pg/ml] as injection with rBCG 5×108/mouse.The rBCG in-duced cytotoxicity of cytotoxic lymphocytes (CTLs) to EBV-positive gastric carcinoma cells (GT39) (with a killing rate of 89.6%±6.8%) was significantly higher than that of control group (P<0.05) The sizes of tumor in PBS control group [(1964.0±548.7) mm3] and BCG group [(1268.65±72.4) mm3] were big-ger than those in rBCG group [(168.64±78.80) mm3].Conclusion The rBCG expressing GM-CSF and LMP2A fusion gene was successfully constructed .The rBCG could induce humoral and cellular immune re-sponses in mice and inhibit the growth of tumor .
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Objective:To construct GM-CSF and EB virus LMP2A fusion gene recombinant adenovirus and identificate it , using recombinant adenovirus to do immunologic study.Methods:With RT-PCR and Western blot to detect GC 2A gene expression of the recombinant adenovirus , with ELISA to analysis antibodies of vAd-GC2A stimulation in murine body , lactate dehydrogenase assay to detect the mouse cellular immunity effect , thereby the recombinant adenovirus immune effect was initially analysis.T-test method was used to do preliminary analysis and evaluation of the immune effect of recombinant adenovirus .Results:GC2A fragment amplified by PCR, the size was 1 961 bp and it was the expected.The results showed, the recombinant adenovirus vAd-GC2A proteins can be recognized by sera antibody of GM-CSF ( LMP2A); the results of ELISA showed that vAd-GC2A can stimulate the generation of antibodies.EBV-positive tumor cell killing rate (%) by CTL induced recombinant adenovirus was (66.7 ±6.9)%, at the same time the adenovirus type 5 wild strains and PBS were (24.3 ±2.5)%and(32.4 ±3.1)%only(P≤0.05).Conclusion:Fusion gene has been successfully constructed , vAd-GC2A in mice have humoral and cellular immune function.The data suggest that the vAd-GC2A should play a potent role in preventing the positive EB virus tumor.
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Lymphocyte chemiluminescence (Ly-CL) is one of the early events involved in the activation of lymphocytes. This CL is thought to be result ed from the reactive oxygen species (O_2, H_2 O_2, OH, 'O_2) produced by the lymphocytes, the consequent oxidation of luminol and emission of light. In this paper we investigated the experimental condition for ConA-induced human peripheral blood lymphocyte (PBL) CL by using orthogonal design. The effects of new born calf serum (NCS), bovine serum albumin (BSA), temperature and time of cell storage on CL were also studied. The results show that the optimal condition of Ly-CL assay was 1.0 ml PBL suspension (1.4 ? 10~6 cell/ml ), 0.2 ml Luminol solution ( 7 ? 10~(-4)M) and 0.2 ml ConA ( 700 ?g /ml ). The isolated PBL were suspended in phenol red-free Hanks solution containing 0.1% BSA and can be kept for 2 hr at 4℃ before being used without adversely affecting cell viability and CL.