1.Analysis of pregnancy outcomes, disease progression, and risk factors in patients with undifferentiated connective tissue disease.
Fang Ning YOU ; Liang LUO ; Xiang Jun LIU ; Xue Wu ZHANG ; Chun LI
Journal of Peking University(Health Sciences) 2023;55(6):1045-1052
OBJECTIVE:
To investigate the fetal and maternal outcomes, risk factors of disease progression and adverse pregnancy outcomes (APOs) in patients with undifferentiated connective tissue disease (UCTD).
METHODS:
This retrospective study described the outcomes of 106 pregnancies in patients with UCTD. The patients were divided into APOs group (n=53) and non-APOs group (n=53). The APOs were defined as miscarriage, premature birth, pre-eclampsia, premature rupture of membranes (PROM), intrauterine growth restriction (IUGR), postpartum hemorrhage (PPH), and stillbirth, small for gestational age infant (SGA), low birth weight infant (LBW) and birth defects. The differences in clinical manifestations, laboratory data and pregnancy outcomes between the two groups were compared. Logistic regression analysis was performed to analyze the risk factors for APOs and the progression of UCTD to definitive CTD.
RESULTS:
There were 99 (93.39%) live births, 4 (3.77%) stillbirths and 3 (2.83%) miscarriage, 20 (18.86%) preterm delivery, 6 (5.66%) SGA, 17 (16.03%) LBW, 11 (10.37%) pre-eclampsia, 7 (6.60%) cases IUGR, 19 (17.92%) cases PROM, 10 (9.43%) cases PPH. Compared with the patients without APOs, the patients with APOs had a higher positive rate of anti-SSA antibodies (73.58% vs. 54.71%, P=0.036), higher rate of leukopenia (15.09% vs. 3.77%, P=0.046), lower haemoglobin level [109.00 (99.50, 118.00) g/L vs. 124.00 (111.50, 132.00) g/L, P < 0.001].Multivariate Logistic regression analysis showed that leucopenia (OR=0.82, 95%CI: 0.688-0.994) was an independent risk factors for APOs in UCTD (P=0.042). Within a mean follow-up time of 5.00 (3.00, 7.00) years, the rate of disease progression to a definite CTD was 14.15%, including 8 (7.54%) Sjögren's syndrome, 4 (3.77%) systemic lupus erythematosus (SLE), 4 (3.77%) rheumatoid arthritis and 1 (0.94%) mixed connective tissue disease. Multivariate Cox proportional risk regression analysis showed that Raynaud phenomenon (HR=40.157, 95%CI: 3.172-508.326) was an independent risk factor for progression to SLE.
CONCLUSION
Leukopenia is an independent risk factor for the development of APOs in patients with UCTD. Raynaud's phenmon is a risk factor for the progression of SLE. Tight disease monitoring and regular follow-up are the key measures to prevent adverse pregnancy outcomes and predict disease progression in UCTD patients with pregnancy.
Pregnancy
;
Infant, Newborn
;
Female
;
Humans
;
Pregnancy Outcome
;
Retrospective Studies
;
Abortion, Spontaneous/etiology*
;
Undifferentiated Connective Tissue Diseases
;
Pre-Eclampsia/epidemiology*
;
Lupus Erythematosus, Systemic
;
Risk Factors
;
Leukopenia
;
Pregnancy Complications/epidemiology*
;
Disease Progression
;
Connective Tissue Diseases/epidemiology*
2.Establishment and validation of a novel nomogram to predict overall survival after radical nephrectomy.
Long Bin XIONG ; Xiang Peng ZOU ; Kang NING ; Xin LUO ; Yu Lu PENG ; Zhao Hui ZHOU ; Jun WANG ; Zhen LI ; Chun Ping YU ; Pei DONG ; Sheng Jie GUO ; Hui HAN ; Fang Jian ZHOU ; Zhi Ling ZHANG
Chinese Journal of Oncology 2023;45(8):681-689
Objective: To establish a nomogram prognostic model for predicting the 5-, 10-, and 15-year overall survival (OS) of non-metastatic renal cell carcinoma patients managed with radical nephrectomy (RN), compare the modelled results with the results of pure pathologic staging, the Karakiewicz nomogram and the Mayo Clinic Stage, Size, Grade, and Necrosis (SSIGN) score commonly used in foreign countries, and stratify the patients into different prognostic risk subgroups. Methods: A total of 1 246 non-metastatic renal cell carcinoma patients managed with RN in Sun Yat-sen University Cancer Center (SYSUCC) from 1999 to 2020 were retrospectively analyzed. Multivariate Cox regression analysis was used to screen the variables that influence the prognosis for nomogram establishment, and the bootstrap random sampling was used for internal validation. The time-receiver operating characteristic curve (ROC), the calibration curve and the clinical decision curve analysis (DCA) were applied to evaluate the nomogram. The prediction efficacy of the nomogram and that of the pure pathologic staging, the Karakiewicz nomogram and the SSIGN score was compared through the area under the curve (AUC). Finally, patients were stratified into different risk subgroups according to our nomogram scores. Results: A total of 1 246 patients managed with RN were enrolled in this study. Multivariate Cox regression analysis showed that age, smoking history, pathological nuclear grade, sarcomatoid differentiation, tumor necrosis and pathological T and N stages were independent prognostic factors for RN patients (all P<0.05). A nomogram model named SYSUCC based on these factors was built to predict the 5-, 10-, and 15-year survival rate of the participating patients. In the bootstrap random sampling with 1 000 iterations, all these factors occurred for more than 800 times as independent predictors. The Harrell's concordance index (C-index) of SYSUCC was higher compared with pure pathological staging [0.770 (95% CI: 0.716-0.823) vs 0.674 (95% CI: 0.621-0.728)]. The calibration curve showed that the survival rate as predicted by the SYSUCC model simulated the actual rate, while the clinical DCA showed that the SYSUCC nomogram has a benefit in certain probability ranges. In the ROC analysis that included 857 patients with detailed pathological nuclear stages, the nomogram had a larger AUC (5-/10-year AUC: 0.823/0.804) and better discriminating ability than pure pathological staging (5-/10-year AUC: 0.701/0.658), Karakiewicz nomogram (5-/10-year AUC: 0.772/0.734) and SSIGN score (5-/10-year AUC: 0.792/0.750) in predicting the 5-/10-year OS of RN patients (all P<0.05). In addition, the AUC of the SYSUCC nomogram for predicting the 15-year OS (0.820) was larger than that of the SSIGN score (0.709), and there was no statistical difference (P<0.05) between the SYSUCC nomogram, pure pathological staging (0.773) and the Karakiewicz nomogram (0.826). The calibration curve was close to the standard curve, which indicated that the model has good predictive performance. Finally, patients were stratified into low-, intermediate-, and high-risk subgroups (738, 379 and 129, respectively) according to the SYSUCC nomogram scores, among whom patients in intermediate- and high-risk subgroups had a worse OS than patients in the low-risk subgroup (intermediate-risk group vs. low-risk group: HR=4.33, 95% CI: 3.22-5.81, P<0.001; high-risk group vs low-risk group: HR=11.95, 95% CI: 8.29-17.24, P<0.001), and the high-risk subgroup had a worse OS than the intermediate-risk group (HR=2.63, 95% CI: 1.88-3.68, P<0.001). Conclusions: Age, smoking history, pathological nuclear grade, sarcomatoid differentiation, tumor necrosis and pathological stage were independent prognostic factors for non-metastasis renal cell carcinoma patients after RN. The SYSUCC nomogram based on these independent prognostic factors can better predict the 5-, 10-, and 15-year OS than pure pathological staging, the Karakiewicz nomogram and the SSIGN score of patients after RN. In addition, the SYSUCC nomogram has good discrimination, agreement, risk stratification and clinical application potential.
Humans
;
Nomograms
;
Retrospective Studies
;
Carcinoma, Renal Cell/pathology*
;
Prognosis
;
Risk Factors
;
Nephrectomy
;
Kidney Neoplasms/pathology*
;
Necrosis
3.A Family with Congenital Dysfibrinogenemia and Blood Transfusion.
Xiang-Cheng LIAO ; Shan-Shan ZHANG ; Zi-Ji YANG ; Chun-Li ZHU ; Hui-Ni HUANG ; Rui-Xian LUO ; Si-Na LI ; Hui-Qiong XIE ; Hai-Lan LI ; Zhu-Ning MO
Journal of Experimental Hematology 2023;31(5):1469-1474
OBJECTIVE:
To investigate a family with congenital dysfibrinogenemia, and analyze the risk of hemorrhage and thrombosis and blood transfusion strategies.
METHODS:
Prothrombin time (PT), activated partial thromboplastin time (APTT) and thrombin time (TT) of the proband and her family members were detected by automatic coagulometer, fibrinogen (Fg) activity and antigen were detected by Clauss method and PT algorithm respectively. Meanwhile, thromboelastometry was analyzed for proband and her family members. Then, peripheral blood samples of the proband and her family members were collected, and all exons of FGA, FGB and FGG and their flanks were amplified by PCR and sequenced to search for gene mutations.
RESULTS:
The proband had normal APTT and PT, slightly prolonged TT, reduced level of Fg activity (Clauss method). The Fg of the proband's aunt, son and daughter all decreased to varying degrees. The results of thromboelastogram indicated that Fg function of the proband and her family members (except her son) was basically normal. Gene analysis showed that there were 6233 G/A (p.AαArg35His) heterozygous mutations in exon 2 of FGA gene in the proband, her children and aunt. In addition, 2 polymorphic loci were found in the family, they were FGA gene g.9308A/G (p.AαThr331Ala) and FGB gene g.12628G/A (p.BβArg478Iys) polymorphism, respectively. The proband was injected with 10 units of cryoprecipitate 2 hours before delivery to prevent bleeding, and no obvious bleeding occurred during and after delivery.
CONCLUSION
Heterozygous mutation of 6233G/A (p.AαArg35His) of FGA gene is the biogenetic basis of the disease in this family with congenital dysfibrinogenemia.
Humans
;
Child
;
Female
;
Fibrinogen/genetics*
;
Pedigree
;
Afibrinogenemia/genetics*
;
Mutation
;
Blood Transfusion
4.Establishment and validation of a novel nomogram to predict overall survival after radical nephrectomy.
Long Bin XIONG ; Xiang Peng ZOU ; Kang NING ; Xin LUO ; Yu Lu PENG ; Zhao Hui ZHOU ; Jun WANG ; Zhen LI ; Chun Ping YU ; Pei DONG ; Sheng Jie GUO ; Hui HAN ; Fang Jian ZHOU ; Zhi Ling ZHANG
Chinese Journal of Oncology 2023;45(8):681-689
Objective: To establish a nomogram prognostic model for predicting the 5-, 10-, and 15-year overall survival (OS) of non-metastatic renal cell carcinoma patients managed with radical nephrectomy (RN), compare the modelled results with the results of pure pathologic staging, the Karakiewicz nomogram and the Mayo Clinic Stage, Size, Grade, and Necrosis (SSIGN) score commonly used in foreign countries, and stratify the patients into different prognostic risk subgroups. Methods: A total of 1 246 non-metastatic renal cell carcinoma patients managed with RN in Sun Yat-sen University Cancer Center (SYSUCC) from 1999 to 2020 were retrospectively analyzed. Multivariate Cox regression analysis was used to screen the variables that influence the prognosis for nomogram establishment, and the bootstrap random sampling was used for internal validation. The time-receiver operating characteristic curve (ROC), the calibration curve and the clinical decision curve analysis (DCA) were applied to evaluate the nomogram. The prediction efficacy of the nomogram and that of the pure pathologic staging, the Karakiewicz nomogram and the SSIGN score was compared through the area under the curve (AUC). Finally, patients were stratified into different risk subgroups according to our nomogram scores. Results: A total of 1 246 patients managed with RN were enrolled in this study. Multivariate Cox regression analysis showed that age, smoking history, pathological nuclear grade, sarcomatoid differentiation, tumor necrosis and pathological T and N stages were independent prognostic factors for RN patients (all P<0.05). A nomogram model named SYSUCC based on these factors was built to predict the 5-, 10-, and 15-year survival rate of the participating patients. In the bootstrap random sampling with 1 000 iterations, all these factors occurred for more than 800 times as independent predictors. The Harrell's concordance index (C-index) of SYSUCC was higher compared with pure pathological staging [0.770 (95% CI: 0.716-0.823) vs 0.674 (95% CI: 0.621-0.728)]. The calibration curve showed that the survival rate as predicted by the SYSUCC model simulated the actual rate, while the clinical DCA showed that the SYSUCC nomogram has a benefit in certain probability ranges. In the ROC analysis that included 857 patients with detailed pathological nuclear stages, the nomogram had a larger AUC (5-/10-year AUC: 0.823/0.804) and better discriminating ability than pure pathological staging (5-/10-year AUC: 0.701/0.658), Karakiewicz nomogram (5-/10-year AUC: 0.772/0.734) and SSIGN score (5-/10-year AUC: 0.792/0.750) in predicting the 5-/10-year OS of RN patients (all P<0.05). In addition, the AUC of the SYSUCC nomogram for predicting the 15-year OS (0.820) was larger than that of the SSIGN score (0.709), and there was no statistical difference (P<0.05) between the SYSUCC nomogram, pure pathological staging (0.773) and the Karakiewicz nomogram (0.826). The calibration curve was close to the standard curve, which indicated that the model has good predictive performance. Finally, patients were stratified into low-, intermediate-, and high-risk subgroups (738, 379 and 129, respectively) according to the SYSUCC nomogram scores, among whom patients in intermediate- and high-risk subgroups had a worse OS than patients in the low-risk subgroup (intermediate-risk group vs. low-risk group: HR=4.33, 95% CI: 3.22-5.81, P<0.001; high-risk group vs low-risk group: HR=11.95, 95% CI: 8.29-17.24, P<0.001), and the high-risk subgroup had a worse OS than the intermediate-risk group (HR=2.63, 95% CI: 1.88-3.68, P<0.001). Conclusions: Age, smoking history, pathological nuclear grade, sarcomatoid differentiation, tumor necrosis and pathological stage were independent prognostic factors for non-metastasis renal cell carcinoma patients after RN. The SYSUCC nomogram based on these independent prognostic factors can better predict the 5-, 10-, and 15-year OS than pure pathological staging, the Karakiewicz nomogram and the SSIGN score of patients after RN. In addition, the SYSUCC nomogram has good discrimination, agreement, risk stratification and clinical application potential.
Humans
;
Nomograms
;
Retrospective Studies
;
Carcinoma, Renal Cell/pathology*
;
Prognosis
;
Risk Factors
;
Nephrectomy
;
Kidney Neoplasms/pathology*
;
Necrosis
5.Visual Electrophysiological Diagnosis and Treatment Technology for Early Intervention of Urinary Incontinence After TUERP
Dao-sheng LUO ; Jian-jun LU ; Wei-ning LIANG ; Yan-chuan ZOU ; Jun-hua MO ; Shu-er CHEN ; Chun-hua DENG
Journal of Sun Yat-sen University(Medical Sciences) 2022;43(6):878-883
ObjectiveTo summarize the effect of visual electrophysiological diagnosis and treatment technology on postoperative urinary incontinence in early intervention after transurethral enucleation and resection of the prostate (TUERP). MethodsTotally 86 patients with benign prostatic hyperplasia (BPH) who underwent TUERP in the Puji Branch Hospital of Dongguan People's Hospital from December 2020 to June 2022 were selected as the treatment group, who received electrophysiological treatment after postoperative removal of the catheter on the 6th day after surgery, while 79 cases who received no electrophysiological treatment after surgery were selected as the control group. The urinary incontinence rates of the two groups on the 6th day, at 1 month and 3 months after surgery were observed. ResultsThere was no statistical difference between the two groups in the preoperative basic data. The rates of urinary incontinence after removal of the catheter in the two groups on the 6th day after surgery were 13 cases (15.1%) in the treatment group and 12 cases (15.2%) in the control group. There was no significant difference between the two groups (P >0.05), and the overall postoperative urinary incontinence rate in the two groups was 15.2% (25/165). At one month after surgery, only 4 cases (4.65%) had slight urinary incontinence in the treatment group, while 13 cases (16.5%) in the control group still had urinary incontinence, and the difference between the two groups was statistically significant ( P=0.019). After follow-up to three months after operation, there was no case of urinary incontinence in the treatment group, and there were still 7 cases (8.86%) of urinary incontinence in the control group. The difference between the two groups was statistically significant (P=0.005). ConclusionThe early intervention of visual electrophysiological diagnosis and treatment technology can effectively prevent the occurrence of urinary incontinence after TUERP, and has good value in clinical application.
6.Analysis on quality value transmitting of substance benchmark of Houpo Wenzhong Decoction.
Qing ZHANG ; Ju-Yuan LUO ; Wen-Jun HU ; Ruo-Nan SHEN ; Xue-Chun LIU ; Yue-Ying ZHAO ; Xing-Yue HUANG ; Chang-Hai WANG ; Ze-Kang ZHANG ; Yang LU ; Ning HAN ; Wen-Yan ZHOU
China Journal of Chinese Materia Medica 2021;46(4):810-819
By preparing 15 batches of lyophilized powder samples of substance benchmark in Houpo Wenzhong Decoction,the fingerprint,index component content and extract rate were determined,and the characteristic peaks,the range of similarity with the reference map,the content range and transfer rate range of magnolol,hesperidin,glycyrrhizic acid and pinocembrin,the extract rate range and the change range were clarified. The results showed that the similarity between the fingerprint of substance benchmark and the reference map R generated from the 15 batches of substance benchmark samples was higher than 0. 90. The assignment of the characteristic peaks in the full prescription's fingerprint of the herbs except Poria cocos was clarified. Nineteen characteristic peaks were assigned,and 12 characteristic peaks were assigned by the reference substance,of which 4 were from Magnolia ocinalis Cortex,5 from Exocarpium Citri Rubrum,2 from Radix aucklandiae,3 from Glycyrrhiza Radix et Rhizoma,4 from Semen Alpiniae Katsumadai,and one from Rhizoma Zingiberis and Zingiber officinale Roscoe. The index component content range and transfer rate range were 0. 80%-1. 14% and 20. 25%-39. 61% for hesperidin,0. 49%-0. 79% and 23. 09%-33. 87%for glycyrrhizic acid,0. 03%-0. 07% and 3. 55%-10. 09% for pinocembrin,0. 15%-0. 38% and 8. 08%-24. 35% for magnolol. The extract rate range and the change range were22. 60%-25. 57% and 12. 67%-23. 68% respectively. In this study,we introduced the concepts of index component content,fingerprint,extract rate,explored the transfer relation of quality value transmitting of substance benchmark in Houpo Wenzhong Decoction,and initially established the quality standard of Houpo Wenzhong Decoction,all of which would provide ideas for the development and research of similar prescriptions.
Benchmarking
;
Chromatography, High Pressure Liquid
;
Drugs, Chinese Herbal
;
Glycyrrhiza
;
Quality Control
7.Analysis of the Risk Factors for Hemorrhagic Cystitis after Hematopoietic Stem Cell Transplantation.
Chun-Hong SUN ; Xiao-Ning WANG ; Min-Na LUO ; Cai-Li GUO ; Shi-Huan QI ; Bei-Rong ZHANG ; Fang WANG ; Huan ZHANG ; Peng-Cheng HE
Journal of Experimental Hematology 2021;29(2):610-614
OBJECTIVE:
To analyze the risk factors affecting hemorrhagic cystitis(HC) after allogeneic hematopoietic stem cell transplantation(allo-HSCT).
METHODS:
The clinical data of 153 patients underwent allogeneic hematopoietic stem cell transplantation in the First Affiliated Hospital of Xi'an Jiaotong University from January 2010 to December 2018 were selected and retrospectively analyzed. The incidence, median time and treatment outcome of HC should be observed. Multivariate analysis was used to observe the risk factors of HC in patients, including sex, age, diagnosis, disease status before transplantation, transplantation type, ATG and CTX in the pretreatment scheme, stem cell source, neutrophil and platelet implantation time; CMV, EBV and BKV infection, and acute graft-versus-host disease(aGVHD).
RESULTS:
Among 153 patients underwent allogeneic hematopoietic stem cell transplantation, 25 (16.34%) patients had HC, the median occurance time was 31 days, all patients achieved complete remission after treatment, no bladder irritation and bladder contracture were left. The results of univariate and multivariate Logistic regression analysis showed that the type of transplantation, ATG, CMV viremia before treatment, aGVHD (r=1.036, 3.234, 3.298 and 2.817, respectively) were the independent risk factors of HC.
CONCLUSION
The urinary BKV detections in the patients with HC are positive, mainly occured during the period from day +13 to days +56. HLA haplotype, pretreatment including ATG, and CMV viremia, and aGVHD are the independent risk factors for HC after allo-HSCT.
Cystitis/etiology*
;
Graft vs Host Disease
;
Hematopoietic Stem Cell Transplantation/adverse effects*
;
Humans
;
Retrospective Studies
;
Risk Factors
8.A prospective study on the association between body mass index and all-cause mortality in type 2 diabetic patients
Ying LI ; Jian SU ; Hao YU ; Yu QIN ; Peng-fei LUO ; En-chun PAN ; Ning ZHANG ; Chong SHEN ; Jin-yi ZHOU ; Ming WU
Chinese Journal of Disease Control & Prevention 2019;23(8):945-950
Objective The aim is to investigate the association between body mass index (BMI) and risk of all-cause mortality among patients with type 2 diabetes. Methods A total of 17 638 patients with type 2 diabetes registered in the management of National Basic Public Health Services in two areas of southern and northern Jiangsu were recruited. Cox proportional risk regression model was used to calculate the hazard ratio(HR) value and 95% confidence interval (95% CI) of different BMI groups in the follow-up period. Results The subjects were followed up for a total of 77 451 person-years with an average duration of 4.39 years, and 1 274 patients died during the follow-up period. The number of death in low weight group (BMI<18.5 kg/m2), normal weight group (18.5 kg/m2≤BMI<24 kg/m2), overweight (24 kg/m2≤BMI<28 kg/m2) and obese group (BMI≥28 kg/m2) were 39, 575, 484 and 176 respectively.The corresponding mortalities were 15.6%, 9.5%, 6.2% and 5.1%, respectively. Compared to normal weight group, the adjusted HR of all-cause mortality in low weight, overweight and obese group were 1.66 (95% CI: 1.20-2.30), 0.68 (95% CI: 0.61-0.77), 0.58 (95% CI: 0.48-0.68), respectively. Conclusions Low-weight patients have the highest risk of all-cause mortality compared with normal counterparts, while both overweight and obese people have a lower risk of death. Overweight and obesity may reduce the risk of all-cause mortality in type 2 diabetic patients.
9.Quality evaluation and toxicity assay for injectable traditional Chinese medicine using Microtox technology
Liang-chun YAN ; Hua HUA ; Xi LUO ; Jun-ning ZHAO
Acta Pharmaceutica Sinica 2019;54(12):2189-2194
Injectable traditional Chinese medicine often contains multiple components including undefined toxic substances, can have high variability between batches, with undefined mechanisms of action. It is urgent to improve the quality and consistency and reduce the toxicity risk of traditional Chinese medicine. The Microtox technology is a simple, rapid method for the detection of toxic substances in the environment that uses non-pathogenic luminescent bacteria as an indicator, and the change in luminosity as an index. Using this bioassay we have systematically applied Microtox technology for the detection of microtoxicity in injectable traditional Chinese medicine. As a new method of bioactivity characterization, Microtox technology is expected to be used in the detection of quality fluctuations and toxicity risks at an early stage in the preparation of injectable traditional Chinese medicines and to improve the quality of injectable traditional Chinese medicine.
10.ADS-J1 antagonizes semen-derived enhancer of virus infection-mediated enhancement of transmitted founder HIV-1 and its matched chronic control strain infection.
Hong-Miao LIU ; Ning-Ning MA ; Chun LUO ; Shu-Ying YUAN ; Fu-Li LIU ; Xin-Gang YAO ; Chun-Qiong ZHOU ; Min ZOU
Journal of Southern Medical University 2018;38(2):211-216
OBJECTIVETo investigate the effect of semen-derived enhancer of virus infection (SEVI) on the infection of transmitted/founder (TF) HIV-1 and its matched chronic control (CC) viruses and the antagonism of ADS-J1 on SEVI-mediated enhancement of TF and CC virus infection in vitro.
METHODSPAPself-assembling into SEVI amyloid fibrils was validated by ThT assay. We generated the virus stocks of TF and CC virus pair. TZM-bl cells were infected with the mixture of SEVI and TF or CC viruses for 72 h. Luciferase activity was used to observe the enhancement of SEVI. SEVI was treated with different concentrations of ADS-J1 and incubated with TF or CC viruses. TZM-bl cells were then infected with the mixture and luciferase activity was detected 72 h after infection to analyze the antagonism of ADS-J1 on the enhancing effect of SEVI. ADS-J1 was also incubated with TF and CC viruses directly and TZM-bl cells were infected for 72 h to evaluate the antiviral effect using luciferase assay. SEVI was treated with ADS-J1 and Zeta potential was determined to explore the antagonistic mechanism of ADS-J1.
RESULTSThT assay showed that PAPwas capable of self-assembly into SEVI amyloid fibrils. SEVI significantly accelerated TF and CC viruses infection (P<0.05), and ADS-J1 not only significantly antagonized the enhancement of SEVI (P<0.05) but also directly inhibited the infection of TF and CC viruses (P<0.05). ADS-J1 neutralized the positive charge of SEVI in a dose-dependent manner.
CONCLUSIONSSEVI promotes the infection of TF and CC strains, and ADS-J1 antagonizes SEVI-mediated enhancement of TF and CC viruses by neutralizing the positive charge of SEVI.

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