1.Pharmacological Effects and Mechanisms of Salviae Miltiorrhizae Radix et Rhizoma and Its Active Components in Treating Depression: A Review
Ziyang HUANG ; Zhiyi WANG ; Zibo LI ; Erping XU
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(4):288-296
Depression is a common mental disorder in clinical practice, and it falls under the category of depression syndrome in traditional Chinese medicine (TCM). In TCM, Qi depression is considered as the root cause of all depression syndromes. Qi depression can lead to blood stasis, which is a key cause of diseases due to depression syndrome. Therefore, treating stasis is an important therapeutic approach for depression syndrome. Salviae Miltiorrhizae Radix et Rhizoma, a representative herbal medicine for activating blood and removing stasis, is effective in activating blood, removing stasis, dredging meridians, and alleviating pain. Currently, it is primarily used in clinical practice to treat cardiovascular and cerebrovascular diseases, such as neurasthenia, coronary heart disease, insomnia, and palpitations. The active components of Salviae Miltiorrhizae Radix et Rhizoma are complex and exhibit a variety of pharmacological effects. These components include water-soluble salvianolic acids and lipid-soluble tanshinones. Modern pharmacological studies have proven that Salviae Miltiorrhizae Radix et Rhizoma and its active components possess antioxidant, anti-inflammatory, anti-tumor, anti-fibrosis, and neuroprotective properties. In recent years, increasing attention has been paid to the pharmacological effects and mechanisms of Salviae Miltiorrhizae Radix et Rhizoma and its active components in treating depression. This paper systematically reviews the antidepressant mechanisms of Salviae Miltiorrhizae Radix et Rhizoma and its main active components from the regulation of monoamine neurotransmitters, the hypothalamic-pituitary-adrenal axis, neurotrophic factors, and neuroinflammation. In addition, this paper summarizes the clinical applications of the prescriptions containing Salviae Miltiorrhizae Radix et Rhizoma in the treatment of depression, providing new insights for further research on the pharmacological mechanisms of Salviae Miltiorrhizae Radix et Rhizoma in treating depression.
2.Evaluation of surgical efficacy in patients with hepatic cystic echinococcosis in Gansu Province from 2006 to 2023
Xixi CHENG ; Yu FENG ; Xu WANG ; Zhiyi WANG ; Jiaxi LEI ; Mingzhe JIANG ; Guobing YANG ; Xiaojuan ZHANG ; Shijie YANG ; Liying WANG
Chinese Journal of Schistosomiasis Control 2025;37(3):247-254
Objective To evaluate the therapeutic efficacy for surgical treatments among patients with hepatic cystic echinococcosis in Gansu Province from 2006 to 2023, so as to provide insights into optimization of the diagnosis and treatment strategies against hepatic cystic echinococcosis. Methods The demographic and clinical data of all echinococcosis cases included in central government fiscal transfer payment program for echinococcosis control and undergoing surgical treatments in Gansu Province from 2006 to 2023 were captured. Hepatic cystic echinococcosis patients with complete medical records and follow-up data were included in the study, and patients’ characteristics, including hospital where patients received diagnosis and treatment, methods of case identification, year of surgery, classification of lesions, number of lesions, size of lesions, course of disease, surgical methods, and post-surgical follow-up data. The cure and recurrence of hepatic cystic echinococcosis were evaluated according to the Guidelines for Management of Echinococcosis Patients in the Central Government Fiscal Transfer Payment Program, and the cure and recurrent rates were calculated. Results Data were collected from 1 686 surgical patients with hepatic cystic echinococcosis. According to the inclusion and exclusion criteria, 1 222 hepatic cystic echinococcosis patients undergoing surgical treatments were included during the period from 2006 to 2022, including 1 166 cured patients (95.42%) and 88 patients with postsurgical recurrence (7.20%), and the cure rate of surgical treatments appeared a tendency towards a rise among patients with hepatic cystic echinococcosis from 2008 to 2022 (χ2trend = 19.39, P < 0.05). The cure rates of hepatic cystic echinococcosis were 100% (177/177), 94.81% (128/135) and 94.62% (861/910) among patients detected through regular physical examinations, screened by the central government fiscal transfer payment program for echinococcosis control, and those who passively sought healthcare services, respectively (χ2 = 9.95, P < 0.05). The cure rates of hepatic cystic echinococcosis were 95.96% (1 046/1 090) among patients with a disease course of 2 years and less and 90.90% (120/132) among patients with a disease course of over 2 years (χ2 = 6.87, P < 0.05), and there were significant differences in the cure rates among patients with hepatic cystic echinococcosis in terms of number of lesions (χ2 = 24.44, P < 0.05) and surgical methods (P < 0.05). The cure rate of hepatic cystic echinococcosis patients was significantly higher following initiation of the central government fiscal transfer payment program for echinococcosis control (96.06%, 1 096/1 141) than before the program (86.42%, 70/81) (χ2 = 16.06, P < 0.05), and the cure rate of hepatic cystic echinococcosis patients was significantly higher in designated hospitals (96.48%, 741/768) than in non-designated hospitals (93.37%, 366/392) (χ2 = 5.78, P < 0.05). The median follow-up period was 4 (interquartile range, 7) years among 1 222 hepatic cystic echinococcosis patients undergoing surgical treatments. The recurrent rate of hepatic cystic echinococcosis appeared a tendency towards a decline from 2008 to 2022 (χ2trend = 36.86, P < 0.05), with a reduction from 23.08% (9/39) in 2008 to 1.85% (1/54) in 2021, and the post-surgical recurrence rate of hepatic cystic echinococcosis was lower following initiation of the central government fiscal transfer payment program for echinococcosis control (5.87%, 67 / 1 141) than before the program (25.93%, 21/81) (χ2 = 45.51, P < 0.05). In addition, the post-surgical recurrence rate of hepatic cystic echinococcosis was higher in non-designated hospitals (10.46%, 41/392) than in designated hospitals (5.60%, 43/768) (χ2 = 9.12, P < 0.05), and there was a significant difference in the post-surgical recurrence rate among patients with hepatic cystic echinococcosis in terms of surgical methods (P < 0.05), with the highest recurrence rate (11.54%) seen among patients undergoing percutaneous fine-needle aspiration of cyst fluids-based surgical procedures (P < 0.05). Conclusion Since the initiation of the central government fiscal transfer payment program for echinococcosis control in Gansu Province in 2006, an increase in the surgical cure rate and a reduction in the recurrence of hepatic cystic echinococcosis had been found among patients with hepatic cystic echinococcosis, indicating a high overall therapeutic efficacy.
3.Experimental study to construct the three-dimensional scaffold of rabbit cartilage-shedding cells and evaluate their compatibility with stem cells
Juju XU ; Yanyan XIE ; Zhiyi GUO ; Yukai MA ; Linhong WANG ; Meirong YANG ; Zhaoling DENG ; Baolai HUA ; Zhenyu YAN
Acta Laboratorium Animalis Scientia Sinica 2024;32(8):1012-1022
Objective To prepare decellularized scaffolds from rabbit cartilage at various concentrations and assess their physicochemical properties and compatibility with stem cells to provide an experimental basis for cartilage repair.Methods Bone marrow mesenchymal stem cells(BMSCs)were cultured using the Percoll density gradient separation method,and this was followed by flow cytometric analysis and testing of their osteogenic and chondrogenic differentiation capabilities.Cartilage pieces were excised from rabbit knees and hip joints and subjected to physical crushing,repeated freeze-thaw cycles,and mixed enzymatic digestion for decellularization.To compare and observe the physicochemical properties of the decellularized scaffolds at different concentrations,three groups of scaffolds(labelwd A,B,and C)were designed with concentrations of 100%,50%and 30%,with three replicates each.Third-generation PKH26-labeled BMSCs were seeded onto optimally concentrated scaffolds and cultured for 1 week to observe cell growth.Results Flow cytometry detected BMSC surface antigens with positive expression of CD44 and CD90 and negative expression of CD45.Osteogenic induction stained with alizarin red showed red calcific nodules,and chondrogenic induction stained with alcian blue showed blue cartilaginous nodules.No apparent cell morphology was observed in the three groups of scaffolds stained with hematoxylin-eosin,and toluidine blue.There was a significant difference in DNA concentration between decellularized samples and non-decellularized scaffolds(P<0.05).The content of glycosaminoglycans was slightly lower than the normal values.Significant differences were observed between the three groups of scaffolds in terms of pore size,water absorption,porosity,tensile strength,and Young's modulus(P<0.05).After co-cultivation of stem cells with the scaffolds,cell adhesion was found to be good.Conclusions Percoll density gradient separation can obtain high-purity rabbit BMSCs,and the mixed decellularization method is superior.Group B scaffolds were the most suitable for tissue-engineered cartilage repair.BMSCs cultured in vitro grew well on Group B scaffolds.
4.Clinical guidelines for the diagnosis and treatment of osteoporotic thoracolumbar vertebral fracture with kyphotic deformity in the elderly (version 2024)
Jian CHEN ; Qingqing LI ; Jun GU ; Zhiyi HU ; Shujie ZHAO ; Zhenfei HUANG ; Tao JIANG ; Wei ZHOU ; Xiaojian CAO ; Yongxin REN ; Weihua CAI ; Lipeng YU ; Tao SUI ; Qian WANG ; Pengyu TANG ; Mengyuan WU ; Weihu MA ; Xuhua LU ; Hongjian LIU ; Zhongmin ZHANG ; Xiaozhong ZHOU ; Baorong HE ; Kainan LI ; Tengbo YU ; Xiaodong GUO ; Yongxiang WANG ; Yong HAI ; Jiangang SHI ; Baoshan XU ; Weishi LI ; Jinglong YAN ; Guangzhi NING ; Yongfei GUO ; Zhijun QIAO ; Feng ZHANG ; Fubing WANG ; Fuyang CHEN ; Yan JIA ; Xiaohua ZHOU ; Yuhui PENG ; Jin FAN ; Guoyong YIN
Chinese Journal of Trauma 2024;40(11):961-973
The incidence of osteoporotic thoracolumbar vertebral fracture (OTLVF) in the elderly is gradually increasing. The kyphotic deformity caused by various factors has become an important characteristic of OTLVF and has received increasing attention. Its clinical manifestations include pain, delayed nerve damage, sagittal imbalance, etc. Currently, the definition and diagnosis of OTLVF with kyphotic deformity in the elderly are still unclear. Although there are many treatment options, they are controversial. Existing guidelines or consensuses pay little attention to this type of fracture with kyphotic deformity. To this end, the Lumbar Education Working Group of the Spine Branch of the Chinese Medicine Education Association and Editorial Committee of Chinese Journal of Trauma organized the experts in the relevant fields to jointly develop Clinical guidelines for the diagnosis and treatment of osteoporotic thoracolumbar vertebral fractures with kyphotic deformity in the elderly ( version 2024), based on evidence-based medical advancements and the principles of scientificity, practicality, and advanced nature, which provided 18 recommendations to standardize the clinical diagnosis and treatment.
5.Impact of autologous hematopoietic stem cell transplantation on the efficacy of CAR-T treatment of relapsed/refractory multiple myeloma
Meijing DING ; Xingxing JIE ; Hujun LI ; Zhiyi XU ; Li NIAN ; Kunming QI ; Zhiling YAN ; Feng ZHU ; Jiang CAO ; Huanxin ZHANG ; Kailin XU ; Hai CHENG ; Zhenyu LI
Chinese Journal of Internal Medicine 2024;63(6):587-592
Objective:To evaluate the effect of autologous hematopoietic stem cell transplantation (ASCT) on the treatment of relapsed/refractory multiple myeloma (RRMM) with chimeric antigen receptor T cell (CAR-T) therapy.Methods:A retrospective cohort study. The clinical data of 168 patients with RRMM who underwent CAR-T therapy at the Department of Hematology, Xuzhou Medical University Hospital from 3 January 2020 to 13 September 2022 were analyzed. Patients were classified into a transplantation group (TG; n=47) and non-transplantation group (NTG; n=121) based on whether or not they had undergone ASCT previously. The objective response rate (ORR), progression-free survival (PFS), overall survival (OS) and the levels of CD3, CD4, CD8, CD19, CD56 and natural killer (NK) cells before CAR-T infusion were analyzed by χ2 test, Kaplan-Meier method and independent sample t-test. Results:Among 168 patients with RRMM, 98 (58.3%) were male. The median age of onset was 57 (range 30-70) years. After CAR-T therapy, the ORR of patients was 89.3% (92/103) in the NTG and 72.9% (27/73) in the TG. The ORR of the NTG was better than that of the TG ( χ2=5.71, P=0.017). After 1 year of CAR-T therapy, the ORR of the NTG was 78.1% (75/96), and that of the TG was 59.4% (19/32). The ORR of the NTG was better than that of the TG ( χ2=4.32, P=0.038). The median OS and PFS in the NTG were significantly longer than those in the TG (OS, 30 vs. 20 months; PFS, 26 vs. 12 months; both P<0.05). The CD4 level before CAR-T infusion in the TG was significantly lower than that in the NTG (25.65±13.56 vs. 32.64±17.21; t=-2.15, P=0.034), and there were no significant differences in the counts of CD3, CD8, CD19, CD56, and NK cells between the TG and NTG (all P>0.05). Conclusion:Among patients suffering from RRMM who received CAR-T therapy, patients who did not receive ASCT had significantly better outcomes than those who had received ASCT previously, which may have been related to the CD4 level before receiving CAR-T therapy.
6.Identification and quality evaluation of mixed herb in different parts of Plantago depressa Willd. and Plantago asiatica L.
Wanmin HONG ; Xiaoxuan YAO ; Yujie CHENG ; Qiuyi MO ; Jie XU ; Kaidong WANG ; Zhiyi LIANG
International Journal of Traditional Chinese Medicine 2023;45(9):1134-1143
Objective:To establish the fingerprints of Plantaginis Herba.Methods:The fingerprints were determined by UPLC. The peak areas of fingerprints of different parts and origins were analyzed by variance analysis and independent sample t-test. PCA, HCA, PLS-DA and other chemical patterns were analyzed by Simca14.1. The index weight was calculated by CRITIC, and the quality of plantain evaluation was combined with grey correlation degree.Results:The fingerprints of grass, stem, leaf and spike of Plantago depressa Willd. calibrated for 24, 16, 23 and 22 common peaks. The fingerprints of grass, stem, leaf and spike of Plantaginis Herba calibrated for 22, 10, 16 and 22 common peaks, and the fingerprints of commercial mixed plantain calibrated for 23 common peaks. 10 peaks were identified. The analysis of variance showed that there were differences in chromatographic peak areas between different parts of Plantago asiatica L. and Plantago depressa Willd.. And combinedede with PLS-DA, it showed that there were 16 important characteristic indexes in the classification, and the importance ranking was peak 3, 8, 28, 12, 14, 7, 5, 17, 6, 19, 23, 11, 22, 27, 9, 16. The quality evaluation results of critical method combined with grey correlation degree showed that among Plantago depressa Willd., Plantago asiatica L. and commercial mixed plantain herbs, the quality of Plantago asiatica L. was the best. Conclusion:The mixture of plantain exists in the market. The fingerprints established in this study can be used for the identification and quality evaluation of Plantaginis Herba from different sources.
7.The effect of ultrasound monitoring of inferior vena cava collapse index guiding fluid replacement on circulation in elderly patients during induction of general anesthesia
Xiaoyun LIAO ; Zhiyi XU ; Yuan ZHAO ; Wenyan SHAN ; Yi ZOU ; Yixun TANG ; Xia HU ; Qiangang MENG
Journal of Chinese Physician 2023;25(5):675-679
Objective:To investigate the effect of ultrasound monitoring of inferior vena cava collapse index (IVC-CI) guiding fluid replacement on circulation in elderly patients during induction of general anesthesia.Methods:A total of 71 elderly patients who underwent elective surgery under general anesthesia and tracheal intubation at Hunan Provincial People′s Hospital from April 2021 to September 2022 were randomly divided into control group (35 cases) and observation group (36 cases) using a random number table method. Before anesthesia, both groups of patients underwent IVC ultrasound examination and calculated the IVC-CI value. For patients with IVC-CI≥40%, the observation group was given 8 ml/kg of crystal solution before anesthesia induction, while the control group was not treated. The incidence of hypotension, the use of vasoactive drugs, and the total infusion volume from anesthesia induction to skin incision were recorded in two groups. Mean arterial blood pressure (MBP), heart rate (HR), oxygen saturation (SpO 2), cardiac index (CI), and cardiac volume variability (SVV) before anesthesia (T 0), 5 min after induction (T 1), 1 min after tracheal intubation (T 2), 5 min after tracheal intubation (T 3), 10 min after tracheal intubation (T 4), and 1 min before skin incision (T 5) were recorded and compared between the two groups. Results:The incidence of hypotension (27.8% vs 60.0%) and utilization rate of vasoactive drugs (25.0% vs 48.6%) in the observation group were lower than those in the control group, and the total infusion volume during anesthesia induction was higher than that in the control group, with statistical significance (all P<0.05). SVV, CI and MBP at T 1, T 3, T 4 and T 5 were significantly different from those at T 0 in the control group ( F=3.85, 14.66, 3.96, all P<0.05). SVV, CI and MBP at T 1, T 3, T 4 and T 5 in the observation group were significantly different from those at T 0 ( F=3.51, 13.20, 4.35, all P<0.05). There was no significant difference in SVV, CI, MBP, HR and SpO 2 between 2 groups (all P>0.05). Conclusions:For the elderly patients with preoperative IVC-CI≥40%, pre-filling with 8ml/kg crystal solution before anesthesia induction can significantly reduce the incidence of hypotension and the utilization rate of vasoactive drugs in the elderly patients during anesthesia induction.
8.Effects of acupuncture and moxibustion on histamine and inflammatory factors in the skin tissue at Tianshu (ST25) of rats with Crohn disease
Jingying ZHOU ; Yitian LAI ; Zongbao YANG ; Xuan XU ; Zhiyi LIANG ; Panting DING ; Guoshan ZHANG ; Mi LIU
Journal of Acupuncture and Tuina Science 2023;21(2):101-108
Objective: To explore the potential mechanism of acupuncture and moxibustion in treating Crohn disease (CD) by evaluating the changes in histamine and inflammatory factors in the skin tissue at Tianshu (ST25) of rats.Methods: Fifty-eight Sprague-Dawley rats were randomly divided into a normal group (n=14) and a CD-modeling group (n=44). Rats in the CD-modeling group received enema with 2,4,6-trinitrobenzene sulfonic acid plus ethanol to establish CD models. The enema was repeated once every 7 d for a total of 4 times. After modeling, four modeled rats and four normal rats were randomly selected for model identification. After the CD model was successfully established, the remaining rats in the CD-modeling group were randomly divided into a model group, an acupuncture group, a moxibustion group, and a Western medication group, with ten rats in each group. The rats in the acupuncture and moxibustion groups were treated with acupuncture or moxibustion at Tianshu (ST25) and Shangjuxu (ST37); the rats in the Western medication group were treated with mesalazine enteric-coated tablets by gavage for continuous 7 d. After the intervention, the colon tissue of rats in each group was collected. After gross observation, hematoxylin-eosin (HE) staining was performed to further observe the pathological changes. The expression of histamine in the skin tissue at Tianshu (ST25) was detected by enzyme-linked immunosorbent assay. The expression of tumor necrosis factor (TNF)-α, interleukin (IL)-1β, IL-18, IL-10, and IL-6 in the skin tissue at Tianshu (ST25) was detected by Western blotting. Results: Compared with the normal group, the colonic wall of rats in the model group showed cobblestone-like changes, local ulcers, and polyps in dark red and thickening and hardening. HE staining showed local loss of mucosal epithelial layer and formation of slit-like ulcers, destruction of mucosal glands, edema, and infiltration of inflammatory cells in lamina propria and submucosa, and occasional formation of sarcoid-like granuloma. The levels of histamine and IL-6 were significantly up-regulated (P<0.01, P<0.05), and the levels of TNF-α, IL-18, and IL-10 were significantly down- regulated (P<0.01 or P<0.05) in the skin tissue at Tianshu (ST25) of rats in the model group. Compared with the model group, the pathomorphological damage of the colon tissue of rats in the acupuncture group, moxibustion group, and Western medication group was significantly improved. The levels of histamine and IL-6 were significantly down- regulated (P<0.01, P<0.05), and the level of IL-10 was significantly up-regulated (P<0.01) in the skin at Tianshu (ST25) of rats in the acupuncture group. The levels of histamine and IL-6 were significantly down-regulated (P<0.01, P<0.05), and the levels of TNF-α, IL-18, and IL-10 were significantly up-regulated (P<0.01 or P<0.05) in the skin tissue at Tianshu (ST25) of rats in the moxibustion group. The level of histamine was significantly down-regulated (P<0.01), and the levels of IL-18 and IL-10 were significantly up-regulated (P<0.05, P<0.01) in the skin tissue of rats in the Western medication group. Compared with the acupuncture group, the level of IL-10 in the skin tissue at Tianshu (ST25) of rats in the moxibustion group was significantly up-regulated (P<0.01). Conclusion: The inflammatory responses in the skin tissue at Tianshu (ST25) may be the external manifestation of CD. Significant differences in the regulation of inflammatory responses in the skin tissue at Tianshu (ST25) between acupuncture and moxibustion exist, which may be caused by the differences in the stimulation characteristics between acupuncture and moxibustion.
9.Clinical and pathological features of intraductal tubulopapillary neoplasms
Jiamei LI ; Jiawen XU ; Zhiyi WANG ; Chang LU ; Yingjie XUE ; Jizhen FENG
Chinese Journal of Hepatobiliary Surgery 2023;29(3):190-194
Objective:To investigate the clinical and pathological features and improve the acknowledgement of intraductal tubulopapillary neoplasm (ITPN) of pancreas.Methods:Six cases with ITPN in the Shandong Provincial Hospital Affiliated to Shandong First Medical University combined with 40 cases from PubMed and CNKI were retrospectively analyzed. There were 25 males and 21 females, aged (58.6±16.0) years. The clinical manifestations, pathological features, treatment and so on were analyzed.Results:All cases were treated with surgery. The main clinical symptoms were upper abdominal pain and discomfort (23 cases, 50.0%), followed by jaundice (9 cases, 19.6%). Seven cases (15.2%) had no clinical symptoms. Three cases (6.5%) had low back discomfort, chills and other rare symptoms, and 4 cases (8.7%) had no clinical symptoms mentioned in the literature. Tumors of 27 cases (58.7%) located in the head of the pancreas, 9 cases (19.6%) in the body and tail, 4 cases (8.7%) in the whole pancreas, 3 cases (6.5%) in the body, 2 cases (4.3%) in ampulla and 1 case (2.2%) in head and body. Most of the tumors located in the main pancreatic duct. Microscopically, back-to-back tubular glands were densely arranged, parts of them with papillary structure, with obvious cell atypia and many mitoses. Twenty-two cases (47.8%) of ITPN were completely confined to the pancreatic duct, and 24 cases (52.2%) were with associated invasive carcinoma. Tumor cells were positive for cytokeratin 7 and mucin 1, but negative for cytokeratin 20, synaptophysin, chromogranin and trypsin. Mucin 2, mucin 5AC and mucin 6 were negative in most cases. Ki-67 ranged from 10% to 70%.Conclusion:Pancreatic ITPNs were mostly located in the pancreatic head, confined to the main pancreatic duct, and were mostly manifested as pain and discomfort in the upper abdomen. Surgery was the main treatment. Tumors cells of ITPN were arranged in tubular and papillary, with severe epithelial atypia and special immunophenotype, parts of cases accompanied with associated invasive carcinoma.
10.Identification of a conservative site in the African swine fever virus p54 protein and its preliminary application in a serological assay
Lingyu XU ; Chenfu CAO ; Zhiyi YANG ; Weixin JIA
Journal of Veterinary Science 2022;23(4):e55-
Background:
ASF was first reported in Kenya in 1910 in 1921. In China, ASF spread to 31 provinces including Henan and Jiangsu within six months after it was first reported on August 3, 2018. The epidemic almost affected the whole China, causing direct economic losses of tens of billions of yuan. Cause great loss to our pig industry. As ELISA is cheap and easy to operate, OIE regards it as the preferred serological method for ASF detection. P54 protein has good antigenicity and is an ideal antigen for detection.
Objective:
To identify a conservative site in the African swine fever virus (ASFV) p54 protein and perform a Cloth-enzyme-linked immunosorbent assay (ELISA) for detecting the ASFV antibody in order to reduce risks posed by using the live virus in diagnostic assays.Method: We used bioinformatics methods to predict the antigen epitope of the ASFV p54 protein in combination with the antigenic index and artificially synthesized the predicted antigen epitope peptides. Using ASFV-positive serum and specific monoclonal antibodies (mAbs), we performed indirect ELISA and blocking ELISA to verify the immunological properties of the predicted epitope polypeptide.
Results:
The results of our prediction revealed that the possible antigen epitope regions were A23–29, A36–45, A72–94, A114–120, A124–130, and A137–150. The indirect ELISA showed that the peptides A23–29, A36–45, A72–94, A114–120, and A137–150 have good antigenicity.Moreover, the A36–45 polypeptide can react specifically with the mAb secreted by hybridoma cells, and its binding site contains a minimum number of essential amino acids in the sequence 37DIQFINPY44.
Conclusions
Our study confirmed a conservative antigenic site in the ASFV p54 protein and its amino acid sequence. A competitive ELISA method for detecting ASFV antibodies was established based on recombinant p54 and matching mAb. Moreover, testing the protein sequence alignment verified that the method can theoretically detect antibodies produced by pigs affected by nearly all ASFVs worldwide.

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