1.Correlation between different low-density lipoprotein cholesterol target levels and prognosis on the application of Evolocumab in patients post-percutaneous coronary intervention
Ze ZHENG ; Peng YUAN ; Han-wei DAN ; Huan-yu JING ; Shi-ying LI ; Yu-chen SHI
Chinese Journal of Interventional Cardiology 2025;33(10):553-560
Objective This study explores the clinical correlation between different low-density lipoprotein cholesterol(LDL-C)levels and prognosis,providing evidence-based guidance for the development of personalized lipid-lowering goals.Methods Patients who underwent elective percutaneous coronary intervention(PCI)treatment at Beijing Anzhen Hospital from January 2020 to June 2023 and received lipid-lowering therapy with the addition of Evolocumab were selected.Based on the results of blood lipid rechecks 3 to 6 months after surgery,the patients were divided into five groups:low-density lipoprotein<0.5 mmol/L,0.5 to<1.0 mmol/L,1.0 to<1.4 mmol/L,1.4 to<1.8 mmol/L,and above 1.8 mmol/L.All patients were followed up for more than one year,and clinical conditions and major adverse cardiovascular events(MACE)were recorded.Results A total of 1 106 patients undergoing PCI were enrolled;after propensity score matching and exclusion of patients lost to follow up,550 remained(110 per group).During 12 months of follow-up,58 patients(10.5%)experienced a MACE,with incidence rising step-wise across LDL-C categories.In multivariable Cox models adjusted for age,sex,diabetes,hypertension,baseline LDL-C,follow-up LDL-C,estimated glomerular filtration rate(eGFR),and left ventricular ejection fraction,the hazard ratios[HR(95%CI)]for MACE,relative to the<0.5 mmol/L group,were 1.810(0.507-6.454,P=0.361),3.036(0.945-9.749,P=0.062),5.228(1.737-15.735,P=0.003),7.708(2.633-22.565,P<0.001)for LDL-C levels of 0.5 to<1.0,1.0 to<1.4,1.4 to<1.8 and≥ 1.8 mmol/L,respectively.A restricted cubic spline model demonstrated a significant non-linear positive association between LDL-C and MACE(P-overall≤0.001;P-non-linear=0.008).Stratified analyses by age,sex,hypertension and diabetes showed consistent HR with no significant interactions(all P>0.05).There were no statistically significant differences among the groups in the incidence of bleeding events,elevated creatinine levels,or abnormal liver function(all P>0.05).Conclusions In patients using PCSK9 after PCI,there is a significant positive correlation between LDL-C levels and the risk of MACE,and no correlation was observed between different LDL-C levels and the risk of adverse events such as bleeding.
2.Correlation between different low-density lipoprotein cholesterol target levels and prognosis on the application of Evolocumab in patients post-percutaneous coronary intervention
Ze ZHENG ; Peng YUAN ; Han-wei DAN ; Huan-yu JING ; Shi-ying LI ; Yu-chen SHI
Chinese Journal of Interventional Cardiology 2025;33(10):553-560
Objective This study explores the clinical correlation between different low-density lipoprotein cholesterol(LDL-C)levels and prognosis,providing evidence-based guidance for the development of personalized lipid-lowering goals.Methods Patients who underwent elective percutaneous coronary intervention(PCI)treatment at Beijing Anzhen Hospital from January 2020 to June 2023 and received lipid-lowering therapy with the addition of Evolocumab were selected.Based on the results of blood lipid rechecks 3 to 6 months after surgery,the patients were divided into five groups:low-density lipoprotein<0.5 mmol/L,0.5 to<1.0 mmol/L,1.0 to<1.4 mmol/L,1.4 to<1.8 mmol/L,and above 1.8 mmol/L.All patients were followed up for more than one year,and clinical conditions and major adverse cardiovascular events(MACE)were recorded.Results A total of 1 106 patients undergoing PCI were enrolled;after propensity score matching and exclusion of patients lost to follow up,550 remained(110 per group).During 12 months of follow-up,58 patients(10.5%)experienced a MACE,with incidence rising step-wise across LDL-C categories.In multivariable Cox models adjusted for age,sex,diabetes,hypertension,baseline LDL-C,follow-up LDL-C,estimated glomerular filtration rate(eGFR),and left ventricular ejection fraction,the hazard ratios[HR(95%CI)]for MACE,relative to the<0.5 mmol/L group,were 1.810(0.507-6.454,P=0.361),3.036(0.945-9.749,P=0.062),5.228(1.737-15.735,P=0.003),7.708(2.633-22.565,P<0.001)for LDL-C levels of 0.5 to<1.0,1.0 to<1.4,1.4 to<1.8 and≥ 1.8 mmol/L,respectively.A restricted cubic spline model demonstrated a significant non-linear positive association between LDL-C and MACE(P-overall≤0.001;P-non-linear=0.008).Stratified analyses by age,sex,hypertension and diabetes showed consistent HR with no significant interactions(all P>0.05).There were no statistically significant differences among the groups in the incidence of bleeding events,elevated creatinine levels,or abnormal liver function(all P>0.05).Conclusions In patients using PCSK9 after PCI,there is a significant positive correlation between LDL-C levels and the risk of MACE,and no correlation was observed between different LDL-C levels and the risk of adverse events such as bleeding.
3.Dongbai Tonglin Mixture for the treatment of chronic prostatitis
Juan LIU ; Wei XIA ; Ze-Huan YUAN ; Wen-Jun HAN
National Journal of Andrology 2024;30(4):336-341
Objective:To evaluate the efficacy of Dongbai Tonglin Mixture(DTM)in the treatment of chronic prostatitis(CP)with the damp-heat downward diffusion syndrome.Methods:We randomly selected 76 cases of CP with the damp-heat downward dif-fusion syndrome,equally divided them into a DTM and a control group,and treated them by oral administration of DTM and Qianlie Tai Tablets,respectively,both for 8 weeks.We obtained the NIH-CPSI and TCM Syndrome Scores of the patients,recorded the counts of white blood cells(WBC)and small particles of lecithin(SPL)in the prostate fluid,and compared them between the two groups before and after treatment.Results:Compared with the baseline,the total NIH-CPSI scores were significantly reduced in both groups after treatment(P<0.05),particularly the scores on urination symptoms,pain/discomfort and quality of life(P<0.05),even more sig-nificantly in the DTM than in the control group(P<0.05),and so were the TCM Syndrome Scores(P<0.05),especially the scores on urinary incontinence,abdominal pain,perineal pain,and scrotal dampness(P<0.05),even more significantly in the former than in the latter group(P<0.05).The count of WBC in the prostate fluid was remarkably decreased(P<0.05),while that of SPL markedly increased in both groups after treatment(P<0.05),with an even more significant improvement in the DTM than in the con-trol group(P<0.05),and the overall effectiveness rate of treatment was significantly higher in the former group than in the latter(88.89%vs 70.27%,P<0.05).Conclusion:Dongbai Tonglin Mixture is effective for the treatment of CP with the damp-heat downward diffusion syndrome.
4.Active Ingredients of Reduning Injection Maintain High Potency against SARS-CoV-2 Variants.
Zhen XIAO ; Huan XU ; Ze-Yang QU ; Xin-Yuan MA ; Bo-Xuan HUANG ; Meng-Si SUN ; Bu-Qing WANG ; Guan-Yu WANG
Chinese journal of integrative medicine 2023;29(3):205-212
OBJECTIVE:
To investigate the anti-coronavirus potential and the corresponding mechanisms of the two ingredients of Reduning Injection: quercetin and luteolin.
METHODS:
A pseudovirus system was designed to test the efficacy of quercetin and luteolin to inhibit SARS-CoV-2 infection and the corresponding cellular toxicity. Luteolin was tested for its activities against the pseudoviruses of SARS-CoV-2 and its variants. Virtual screening was performed to predict the binding sites by Autodock Vina 1.1.230 and PyMol. To validate docking results, surface plasmon resonance (SPR) was used to measure the binding affinity of the compounds with various proteins of the coronaviruses. Quercetin and luteolin were further tested for their inhibitory effects on other coronaviruses by indirect immunofluorescence assay on rhabdomyosarcoma cells infected with HCoV-OC43.
RESULTS:
The inhibition of SARS-CoV-2 pseudovirus by luteolin and quercetin were strongly dose-dependent, with concentration for 50% of maximal effect (EC50) of 8.817 and 52.98 µmol/L, respectively. Their cytotoxicity to BHK21-hACE2 were 177.6 and 405.1 µmol/L, respectively. In addition, luetolin significantly blocked the entry of 4 pseudoviruses of SARS-CoV-2 variants, with EC50 lower than 7 µmol/L. Virtual screening and SPR confirmed that luteolin binds to the S-proteins and quercetin binds to the active center of the 3CLpro, PLpro, and helicase proteins. Quercetin and luteolin showed over 99% inhibition against HCoV-OC43.
CONCLUSIONS
The mechanisms were revealed of quercetin and luteolin inhibiting the infection of SARS-CoV-2 and its variants. Reduning Injection is a promising drug for COVID-19.
Humans
;
SARS-CoV-2
;
COVID-19
;
Luteolin
;
Quercetin
5.Safety and efficacy of the early administration of levosimendan in patients with acute non-ST-segment elevation myocardial infarction and elevated NT-proBNP levels: An Early Management Strategy of Acute Heart Failure (EMS-AHF).
Feng XU ; Yuan BIAN ; Guo Qiang ZHANG ; Lu Yao GAO ; Yu Fa LIU ; Tong Xiang LIU ; Gang LI ; Rui Xue SONG ; Li Jun SU ; Yan Ju ZHOU ; Jia Yu CUI ; Xian Liang YAN ; Fang Ming GUO ; Huan Yi ZHANG ; Qing Hui LI ; Min ZHAO ; Li Kun MA ; Bei An YOU ; Ge WANG ; Li KONG ; Jian Liang MA ; Xin Fu ZHOU ; Ze Long CHANG ; Zhen Yu TANG ; Dan Yu YU ; Kai CHENG ; Li XUE ; Xiao LI ; Jiao Jiao PANG ; Jia Li WANG ; Hai Tao ZHANG ; Xue Zhong YU ; Yu Guo CHEN
Chinese Journal of Internal Medicine 2023;62(4):374-383
Objectives: To investigated the safety and efficacy of treating patients with acute non-ST-segment elevation myocardial infarction (NSTEMI) and elevated levels of N-terminal pro-hormone B-type natriuretic peptide (NT-proBNP) with levosimendan within 24 hours of first medical contact (FMC). Methods: This multicenter, open-label, block-randomized controlled trial (NCT03189901) investigated the safety and efficacy of levosimendan as an early management strategy of acute heart failure (EMS-AHF) for patients with NSTEMI and high NT-proBNP levels. This study included 255 patients with NSTEMI and elevated NT-proBNP levels, including 142 males and 113 females with a median age of 65 (58-70) years, and were admitted in the emergency or outpatient departments at 14 medical centers in China between October 2017 and October 2021. The patients were randomly divided into a levosimendan group (n=129) and a control group (n=126). The primary outcome measure was NT-proBNP levels on day 3 of treatment and changes in the NT-proBNP levels from baseline on day 5 after randomization. The secondary outcome measures included the proportion of patients with more than 30% reduction in NT-proBNP levels from baseline, major adverse cardiovascular events (MACE) during hospitalization and at 6 months after hospitalization, safety during the treatment, and health economics indices. The measurement data parameters between groups were compared using the t-test or the non-parametric test. The count data parameters were compared between groups using the χ² test. Results: On day 3, the NT-proBNP levels in the levosimendan group were lower than the control group but were statistically insignificant [866 (455, 1 960) vs. 1 118 (459, 2 417) ng/L, Z=-1.25,P=0.21]. However, on day 5, changes in the NT-proBNP levels from baseline in the levosimendan group were significantly higher than the control group [67.6% (33.8%,82.5%)vs.54.8% (7.3%,77.9%), Z=-2.14, P=0.03]. There were no significant differences in the proportion of patients with more than 30% reduction in the NT-proBNP levels on day 5 between the levosimendan and the control groups [77.5% (100/129) vs. 69.0% (87/126), χ²=2.34, P=0.13]. Furthermore, incidences of MACE did not show any significant differences between the two groups during hospitalization [4.7% (6/129) vs. 7.1% (9/126), χ²=0.72, P=0.40] and at 6 months [14.7% (19/129) vs. 12.7% (16/126), χ²=0.22, P=0.64]. Four cardiac deaths were reported in the control group during hospitalization [0 (0/129) vs. 3.2% (4/126), P=0.06]. However, 6-month survival rates were comparable between the two groups (log-rank test, P=0.18). Moreover, adverse events or serious adverse events such as shock, ventricular fibrillation, and ventricular tachycardia were not reported in both the groups during levosimendan treatment (days 0-1). The total cost of hospitalization [34 591.00(15 527.46,59 324.80) vs. 37 144.65(16 066.90,63 919.00)yuan, Z=-0.26, P=0.80] and the total length of hospitalization [9 (8, 12) vs. 10 (7, 13) days, Z=0.72, P=0.72] were lower for patients in the levosimendan group compared to those in the control group, but did not show statistically significant differences. Conclusions: Early administration of levosimendan reduced NT-proBNP levels in NSTEMI patients with elevated NT-proBNP and did not increase the total cost and length of hospitalization, but did not significantly improve MACE during hospitalization or at 6 months.
Male
;
Female
;
Humans
;
Aged
;
Natriuretic Peptide, Brain
;
Simendan/therapeutic use*
;
Non-ST Elevated Myocardial Infarction
;
Heart Failure/drug therapy*
;
Peptide Fragments
;
Arrhythmias, Cardiac
;
Biomarkers
;
Prognosis
6.To compare the efficacy and incidence of severe hematological adverse events of flumatinib and imatinib in patients newly diagnosed with chronic phase chronic myeloid leukemia.
Xiao Shuai ZHANG ; Bing Cheng LIU ; Xin DU ; Yan Li ZHANG ; Na XU ; Xiao Li LIU ; Wei Ming LI ; Hai LIN ; Rong LIANG ; Chun Yan CHEN ; Jian HUANG ; Yun Fan YANG ; Huan Ling ZHU ; Ling PAN ; Xiao Dong WANG ; Gui Hui LI ; Zhuo Gang LIU ; Yan Qing ZHANG ; Zhen Fang LIU ; Jian Da HU ; Chun Shui LIU ; Fei LI ; Wei YANG ; Li MENG ; Yan Qiu HAN ; Li E LIN ; Zhen Yu ZHAO ; Chuan Qing TU ; Cai Feng ZHENG ; Yan Liang BAI ; Ze Ping ZHOU ; Su Ning CHEN ; Hui Ying QIU ; Li Jie YANG ; Xiu Li SUN ; Hui SUN ; Li ZHOU ; Ze Lin LIU ; Dan Yu WANG ; Jian Xin GUO ; Li Ping PANG ; Qing Shu ZENG ; Xiao Hui SUO ; Wei Hua ZHANG ; Yuan Jun ZHENG ; Qian JIANG
Chinese Journal of Hematology 2023;44(9):728-736
Objective: To analyze and compare therapy responses, outcomes, and incidence of severe hematologic adverse events of flumatinib and imatinib in patients newly diagnosed with chronic phase chronic myeloid leukemia (CML) . Methods: Data of patients with chronic phase CML diagnosed between January 2006 and November 2022 from 76 centers, aged ≥18 years, and received initial flumatinib or imatinib therapy within 6 months after diagnosis in China were retrospectively interrogated. Propensity score matching (PSM) analysis was performed to reduce the bias of the initial TKI selection, and the therapy responses and outcomes of patients receiving initial flumatinib or imatinib therapy were compared. Results: A total of 4 833 adult patients with CML receiving initial imatinib (n=4 380) or flumatinib (n=453) therapy were included in the study. In the imatinib cohort, the median follow-up time was 54 [interquartile range (IQR), 31-85] months, and the 7-year cumulative incidences of CCyR, MMR, MR(4), and MR(4.5) were 95.2%, 88.4%, 78.3%, and 63.0%, respectively. The 7-year FFS, PFS, and OS rates were 71.8%, 93.0%, and 96.9%, respectively. With the median follow-up of 18 (IQR, 13-25) months in the flumatinib cohort, the 2-year cumulative incidences of CCyR, MMR, MR(4), and MR(4.5) were 95.4%, 86.5%, 58.4%, and 46.6%, respectively. The 2-year FFS, PFS, and OS rates were 80.1%, 95.0%, and 99.5%, respectively. The PSM analysis indicated that patients receiving initial flumatinib therapy had significantly higher cumulative incidences of CCyR, MMR, MR(4), and MR(4.5) and higher probabilities of FFS than those receiving the initial imatinib therapy (all P<0.001), whereas the PFS (P=0.230) and OS (P=0.268) were comparable between the two cohorts. The incidence of severe hematologic adverse events (grade≥Ⅲ) was comparable in the two cohorts. Conclusion: Patients receiving initial flumatinib therapy had higher cumulative incidences of therapy responses and higher probability of FFS than those receiving initial imatinib therapy, whereas the incidence of severe hematologic adverse events was comparable between the two cohorts.
Adult
;
Humans
;
Adolescent
;
Imatinib Mesylate/adverse effects*
;
Incidence
;
Antineoplastic Agents/adverse effects*
;
Retrospective Studies
;
Pyrimidines/adverse effects*
;
Leukemia, Myelogenous, Chronic, BCR-ABL Positive/drug therapy*
;
Treatment Outcome
;
Benzamides/adverse effects*
;
Leukemia, Myeloid, Chronic-Phase/drug therapy*
;
Aminopyridines/therapeutic use*
;
Protein Kinase Inhibitors/therapeutic use*
7.Active Ingredients of Reduning Injections Maintain High Potency against SARS-CoV-2 Variants.
Zhen XIAO ; Huan XU ; Ze-Yang QU ; Xin-Yuan MA ; Bo-Xuan HUANG ; Meng-Si SUN ; Bu-Qing WANG ; Guan-Yu WANG
Chinese journal of integrative medicine 2022;():1-8
OBJECTIVE:
To investigate the anti-coronavirus potential and the corresponding mechanisms of the two ingredients of Reduning Injection: quercetin and luteolin.
METHODS:
A pseudovirus system was designed to test the efficacy of quercetin and luteolin to inhibit SARS-CoV-2 infection and the corresponding cellular toxicity. Luteolin was tested for its activities against the pseudoviruses of SARS-CoV-2 and its variants. Virtual screening was performed to predict the binding sites by Autodock Vina 1.1.230 and PyMol. To validate docking results, surface plasmon resonance (SPR) was used to measure the binding affinity of the compounds with various proteins of the coronaviruses. Quercetin and luteolin were further tested for their inhibitory effects on other coronaviruses by indirect immunofluorescence assay on rhabdomyosarcoma cells infected with HCoV-OC43.
RESULTS:
The inhibition of SARS-CoV-2 pseudovirus by luteolin and quercetin were strongly dose-dependent, with concentration for 50% of maximal effect (EC50) of 8.817 and 52.98 µmol/L, respectively. Their cytotoxicity to BHK21-hACE2 were 177.6 and 405.1 µmol/L, respectively. In addition, luetolin significantly blocked the entry of 4 pseudoviruses of SARS-CoV-2 variants, with EC50 lower than 7 µmol/L. Virtual screening and SPR confirmed that luteolin binds to the S-proteins and quercetin binds to the active center of the 3CLpro, PLpro, and helicase proteins. Quercetin and luteolin showed over 99% inhibition against HCoV-OC43.
CONCLUSIONS
The mechanisms were revealed of quercetin and luteolin inhibiting the infection of SARS-CoV-2 and its variants. Reduning Injection is a promising drug for COVID-19.
8.Clinical manifestations of erythrocyte membrane protein coding gene mutations in hereditary spherocytosis.
Xiu Juan SUN ; Hai Yan LI ; Da Peng LI ; Yong Ze LIU ; Jia Yuan ZHANG ; Yan Ke YIN ; Ming Huan SU ; Hong PAN ; Qiu Ling LI ; Bo HU ; Hong LIU ; Jun SHI
Chinese Journal of Hematology 2018;39(11):912-916
Objective: To investigate the relationship between the erythrocyte membrane protein gene mutations and the clinical severity of hereditary spherocytosis (HS). Methods: Targeted sequencings were performed on 25 HS patients, correlation between HS mutations and patients' clinical characteristics were evaluated. Results: A total of 25 HS patients were enrolled, including 13 males and 12 females with median age of 20 (4-55) years, including 9 compensatory hemolysis patients, 9 patients with mild anemia, 3 patients with moderate anemia and 4 patients with severe anemia. Of them, 18 patients (72%) harbored HS-related mutations, including ANK1 mutation in 6 cases, SLC4A1 mutation in 6 cases, SPTB mutation in 5 cases and 1 case with EPB41 mutation. Seven patients (28%) didn't carry common HS mutations. SPTB and SLC4A1 mutations mainly affected male patients. There was no significant difference between the age of diagnosis (P=0.130) and HGB level (P=0.585) in patients with HS mutation and those without mutation, however, the EMA binding fluorescence intensity (P=0.015), AGLT50 (P=0.032) and EOF minimal hemolytic concentration (P=0.027) were significantly different in these two groups of HS patients. Conclusion: To screen erythrocyte membrane protein coding gene mutations could favor the diagnosis of HS, and patients without mutations have mild clinical phenotype.
Adolescent
;
Adult
;
Child
;
Child, Preschool
;
Erythrocyte Membrane
;
Female
;
Hemolysis
;
Humans
;
Male
;
Middle Aged
;
Mutation
;
Spherocytosis, Hereditary
;
Young Adult
9.Mesorectal metastasis of middle and lower rectal cancer.
Jin WAN ; Ze-yu WU ; Jia-lin DU ; Yuan YAO ; Zhi-du WANG ; Hua-huan LIN ; Xin-lan LUO ; Wei ZHANG
Chinese Journal of Surgery 2006;44(13):894-896
OBJECTIVETo detect mesorectal metastasis of middle and lower rectal cancer and to evaluate its relationship with clinicopathologic characteristics.
METHODSCancer specimens resected from 56 patients with middle and lower rectal cancer who received total mesorectal excision were examined by routine pathologic observation. The relationship between mesorectal metastasis and clinicopathologic characteristics of middle and lower rectal cancer was also investigated.
RESULTSMesorectal metastasis was detected in 36 (64.3%) of 56 cancer specimens. In 18 cancer specimens with tumor diameter > or = 5 cm, 15 (83.3%) were detected mesorectal metastasis, while in 38 cancer specimens with tumor diameter < 5 cm only 21 (55.3%) were detected mesorectal metastasis (P = 0.041). Mesorectal metastasis was more frequent in T(3) cancer specimens (81.5%) and T(2) cancer specimens (56.6%), compared with T(1) cancer specimens (1/6) (P = 0.007). 85.7% poorly differentiated cancer specimens were detected mesorectal metastasis, while moderate and well-differentiated cancer specimens were only 63.2% and 1/5 respectively (P = 0.028). Mesorectal metastasis was more frequent in stage III cancer specimens (100%), compared with stage II and I cancer specimens (27.3% and 1/5 respectively, P = 0.000). No significant correlations were found between mesorectal metastasis and other variables such as age, gender and Ming classification (P > 0.05).
CONCLUSIONMesorectal metastasis of middle and lower rectal cancer has significant correlation with tumor diameter, tumor invasion, tumor differentiation and TNM stage. Total mesorectal excision or > or = 5 cm mesorectal distal to the rectal tumor should be followed in the management of middle and lower rectal cancer.
Adult ; Aged ; Aged, 80 and over ; Female ; Humans ; Male ; Mesentery ; pathology ; surgery ; Middle Aged ; Neoplasm Invasiveness ; Neoplasm Metastasis ; Neoplasm Staging ; Prospective Studies ; Rectal Neoplasms ; pathology ; surgery
10.Regulating effects of novel CpG chitosan-nanoparticles on immune responses of mice to porcine paratyphoid vaccines.
Man-Liang FU ; San-Cheng YING ; Mei WU ; Hui LI ; Kai-Yuan WU ; Yi YANG ; Huan ZHANG ; Chi CHENG ; Ze-Zhou WANG ; Xiu-Ying WANG ; Xue-Bing LV ; Yi-Zheng ZHANG ; Rong GAO
Biomedical and Environmental Sciences 2006;19(4):315-322
OBJECTIVETo study the regulating effects of a novel CpG oligodeoxynuleotide and the synergistic effect of chitosan-nanoparticles (CNP) with CpG on immune responses of mice, which were used to develop a novel immunoadjuvant to boost immune response to conventional vaccines.
METHODSA novel CpG ODN containing 11 CpG motifs was synthesized and its bioactivities to stimulate the proliferation of lymphocytes of pig in vitro were detected. Then it was entrapped with CNP prepared in our laboratory by the method of ionic cross linkage, and immunized Kunming mice were co-inoculated with paratyphoid vaccine. The peripheral blood was collected weekly from the tail vein of inoculated mice to detect the contents of IgG, IgA, IgM, and specific antibody against salmonella as well as the levels of interleukin-2 (IL2), IL-4, and IL-6 by SABC-ELISA assay. The numbers of leucocytes, monocytes, granuloytes, and lymphocytes were calculated separately using the routine method. The experimental mice were orally challenged with virulent salmonella 35 days after inoculation.
RESULTSThis CpG ODN could remarkably provoke the proliferation of lymphocytes of pig in vitro in contrast with the control (P < 0.05). Compared with those of the control, immunoglobulins, including IgG, IgA, IgM, and specific antibodies to paratyphoid vaccine, increased significantly in sera from the CpG or CpG-CNP-vaccinated mice (P < 0.05). IL-2, IL-4, and IL-6 increased remarkably in sera from immunized mice (P < 0.05). The leucocytes, monocytes, granuloytes, and lymphocytes of the mice immunized with CpG or CpG-CNP were also increased in number (P < 0.05). After the challenge, these immunity values were elevated in the mice vaccinated with CpG or CpG-CNP. The immunized mice all survived, while the control mice fell ill with evident lesions with diffuse hemorrhage in stomach, small intestine, and peritoneum.
CONCLUSIONSCpG ODN entrapped with CNP is a promising effective immunoadjuvant for vaccination, which promotes humoral and cellular immune responses, enhances immunity and resistance against salmonella by co-administration with paratyphoid vaccine.
Adjuvants, Immunologic ; administration & dosage ; pharmacology ; Animals ; Antibodies, Bacterial ; blood ; Cell Proliferation ; Chitosan ; chemistry ; Drug Therapy, Combination ; Enzyme-Linked Immunosorbent Assay ; Immunoglobulin Isotypes ; blood ; Interleukins ; blood ; Lymphocyte Activation ; drug effects ; Lymphocytes ; cytology ; Mice ; Nanoparticles ; chemistry ; Oligodeoxyribonucleotides ; administration & dosage ; pharmacology ; Paratyphoid Fever ; immunology ; prevention & control ; Salmonella ; physiology ; Salmonella Infections, Animal ; immunology ; prevention & control ; Swine ; immunology ; Typhoid-Paratyphoid Vaccines ; immunology

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