1.Mechanism of Guihuang Formula in Regulating NLRP3 Inflammasome-mediated Pyroptosis in Treatment of Chronic Prostatitis
Qinghe GAO ; Jianhua FU ; Shengjing LIU ; Ziwei ZHAO ; Ming ZHAO ; Boda GUO
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(2):108-116
ObjectiveTo observe the mechanism of Guihuang formula in regulating the activation of NOD-like receptor protein 3 (NLRP3) inflammasome and inhibiting pyroptosis in the treatment of type Ⅲ prostatitis. Methods(1) In an animal experiment, 50 Sprague Dawley (SD) rats were randomly divided into a blank group, a model group, and low-dose, medium-dose, and high-dose groups of Guihuang formula, with 10 rats in each group. Except for the blank group, the type Ⅲ prostatitis rat model was prepared for the other four groups.After the modeling was successful, the blank group and the model group were given normal saline intragastrically, and the low-dose, medium-dose, and high-dose groups of Guihuang formula were given intragastrically with Guihuang formula (4.9, 9.8, 19.6 g·kg-1). After 30 days of intragastrical administration, samples were taken for detection. Inflammatory cell infiltration in prostate tissue was observed by hematoxylin-eosin (HE) staining, and serum IL-1β and IL-18 levels were measured by enzyme-linked immunosorbent assay (ELISA). Serum malondialdehyde (MDA), superoxide dismutase (SOD), and glutathione peroxidase (GSH-Px) levels were determined by biochemistry. NLRP3 expression in prostate tissue was assessed by immunohistochemistry, and the expression of NLRP3, cysteine-aspartic acid protease-1 (Caspase-1), and gasdermin D (GSDMD) in prostate tissue was measured by Western blot. (2) In a cell experiment, human normal prostate epithelial cells (RWPE-1 cells) were divided into a blank group, a model group, a Guihuang formula group, and an NLRP3 inhibitor group (MCC950 group). Except for the blank group, the other three groups were stimulated by 100 μg·L-1 lipopolysaccharide (LPS) for 4 h and 5 mol·L-1 adenosine triphosphate (ATP) for 30 min to prepare the pyroptosis model. After successful modeling, blank serum was given to the blank group and the model group. 6.25 μg·mL-1 Guihuang formula drug-containing serum was added to the Guihuang formula group, and MCC950 was added to the MCC950 group on the basis of the model group. Propidium iodide (PI) uptake and Caspase-1 expression were detected by flow cytometry, and lactate dehydrogenase (LDH) level in the cell supernatant was measured by biochemistry. Interleukin (IL)-1β and IL-18 levels of the cell supernatant were determined by ELISA, and the expression of NLRP3, Caspase-1, and GSDMD was detected in Western blot. Results(1) For the animal experiment, compared with the blank group, the model group showed significant infiltration of inflammatory cells in prostate tissue, while the low-dose, medium-dose, and high-dose groups of Guihuang formula showed reduced infiltration of acinar inflammatory cells, reduced degree of glandular epithelial degeneration and interstitial edema, and significantly reduced degree of damage. Compared with those in the blank group, the levels of IL-1β and IL-18 in the serum of the model group were significantly increased (P<0.01). Compared with the model group, the low-dose, medium-dose, and high-dose groups of Guihuang formula showed a significant decrease in serum IL-1β and IL-18 levels (P<0.01). Compared with that in the blank group, the serum MDA level in the model group significantly increased (P<0.01). Compared with that in the model group, the MDA level in the low-dose, medium-dose, and high-dose groups of Guihuang formula was significantly reduced (P<0.01). Compared with those in the blank group, the levels of SOD and GSH-Px in the serum of the model group significantly decreased (P<0.05). Compared with the model group, the low-dose, medium-dose, and high-dose groups of Guihuang formula showed a significantly increase in SOD (P<0.01). Compared with the model group, the low-dose, medium-dose, and high-dose groups of Guihuang formula showed a significantly increase in GSH-Px (P<0.05). Immunohistochemistry showed that compared with the blank group, the model group had high expression of NLRP3 molecule in prostate tissue. The expression of NLRP3 in the low-dose, medium-dose, and high-dose groups of Guihuang formula was significantly lower than that in the model group. Compared with those in the blank group, the expression levels of NLRP3, Caspase-1, and GSDMD proteins in the prostate tissue of the model group were significantly increased (P<0.01). Compared with those in the model group, the expression levels of NLRP3, Caspase-1, and GSDMD proteins in the low-dose, medium-dose, and high-dose groups of Guihuang formula were significantly inhibited (P<0.01). (2) For the cell experiment, compared with that in the blank group, the PI uptake rate of RWPE-1 cells in the model group significantly increased (P<0.01). Compared with that in the model group, the PI uptake rate of the Guihuang formula group and the inhibitor group significantly decreased (P<0.01). Compared with that in the blank group, the expression of Caspase-1 in the model group was significantly higher (P<0.01). Compared with that in the model group, the Caspase-1 in the Guihuang formula group and the inhibitor group significantly decreased (P<0.01). Compared with the blank group, the model group showed an increase in LDH release (P<0.01). Compared with the model group, the Guihuang formula group and the inhibitor group showed a significantly decrease in LDH release (P<0.01). Compared with those in the blank group, the levels of IL-1β and IL-18 in the supernatant of the model group were significantly increased (P<0.01). Compared with the model group, the Guihuang formula group and the inhibitor group showed a significantly decrease in the levels of IL-1β and IL-18 (P<0.01). Compared with those in the blank group, the expression levels of NLRP3, Caspase-1, and GSDMD proteins significantly increased in the model group (P<0.01). Compared with those in the model group, the protein expression levels of NLRP3, Caspase-1, and GSDMD were significantly reduced in the Guihuang formula group and inhibitor group (P<0.01). ConclusionGuihuang formula can inhibit the activation of Caspase-1, prevent GSDMD cleavation and lysis, and inhibit cell pyrodeath in the treatment of type Ⅲ prostatitis by inhibiting the activation of NLRP3 inflammasome.
2.Expert Consensus on Neurocritical Care Monitoring and Management in Beijing and Tibet(2025)
Drolma PHURBU ; Wenjin CHEN ; Heng ZHANG ; Jian ZHANG ; Xiaomeng WANG ; Guoying LIN ; Wenjun PAN ; Xiying GUI ; Xin CAI ; Chodron TENZIN ; Jianlei FU ; Qianwei LI ; TSEYANG ; Yijun LIU ; Bo LIU ; Tsering DROLMA ; Yudron SONAM ; KYILV ; Samdrup TSERING ; Wa DA ; Juan GUO ; Cheng QIU ; Huan CHEN ; Xiaoting WANG ; Yangong CHAO ; Dawei LIU ; Wenzhao CHAI ; Chenggong HU ; Wanhong YIN ; Shihong ZHU
Medical Journal of Peking Union Medical College Hospital 2026;17(1):59-72
Neurocritical care involves complex pathophysiological mechanisms, and its incidence is higher, injuries are more severe, and treatment is more challenging in high-altitude environments. This consensus, based on the latest domestic and international evidence-based medical data, establishes a standardized, goal-oriented framework for neurocritical care management applicable in high-altitude regions and nationwide. The consensus was developed following international standards for evidence quality assessment and underwent two rounds of Delphi expert consultation, resulting in 32 recommendation statements covering three parts: management systems, monitoring and assessment, and core strategies. Key updates include: advocating for the establishment of independent neurocritical care units and implementing precise tiered diagnosis and treatment based on the "Five Differences in Critical Care" concept; constructing a "trinity" multimodal brain monitoring system centered on cerebral blood flow, cerebral oxygenation, and brain function, emphasizing routine bedside transcranial Doppler ultrasound, cerebral oximetry, and continuous electroencephalography monitoring; shifting management strategies from mild hypothermia therapy to targeted temperature management, and defining the "446" target management pathway for the supercritical stage; emphasizing the assessment of static and dynamic cerebrovascular autoregulation functions through multimodal methods to achieve individualized optimal mean arterial pressure management; elevating cerebrospinal fluid management goals to the level of "glymphatic system" function maintenance; implementing a multidisciplinary collaborative, whole-process management model focusing on patients' long-term neurological functional outcomes; de-escalation criteria include multidimensional indicators such as recovery of brain structure, restoration of cerebrovascular autoregulation, improvement in cerebrospinal fluid dynamics, and reduction in biomarker levels; and integrating cutting-edge technologies like artificial intelligence into post-critical care management and rehabilitation planning. This consensus systematically integrates the entire process of neurocritical care management, reflecting the modern connotation of goal-oriented, dynamic, and multimodal integration in neurocritical care medicine. It aims to adapt to new trends such as deepening understanding of pathophysiological mechanisms, the integration of medicine and engineering, and the empowerment of artificial intelligence, thereby further advancing the discipline of critical care medicine.
3.WANG Xiuxia's Clinical Experience in Treating Hyperprolactinemia with Liver Soothing Therapy
Yu WANG ; Danni DING ; Yuehui ZHANG ; Songli HAO ; Meiyu YAO ; Ying GUO ; Yang FU ; Ying SHEN ; Jia LI ; Fangyuan LIU ; Fengjuan HAN
Journal of Traditional Chinese Medicine 2025;66(14):1428-1432
This paper summarizes Professor WANG Xiuxia's clinical experience in treating hyperprolactinemia using the liver soothing therapy. Professor WANG identifies liver qi stagnation and rebellious chong qi (冲气) as the core pathomechanisms of hyperprolactinemia. Furthermore, liver qi stagnation may transform into fire or lead to pathological changes such as spleen deficiency with phlegm obstruction or kidney deficiency with essence depletion. The treatment strategy centers on soothing the liver, with a modified version of Qinggan Jieyu Decoction (清肝解郁汤) as the base formula. Depending on different syndrome patterns such as liver stagnation transforming into fire, liver stagnation with spleen deficiency, or liver stagnation with kidney deficiency, heat clearing, spleen strengthening, or kidney tonifying herbs are added accordingly. In addition, three paired herb combinations are commonly used for symptom specific treatment, Danggui (Angelica sinensis) with Chuanxiong (Ligusticum chuanxiong), Zelan (Lycopus lucidus) with Yimucao (Leonurus japonicus) , and Jiegeng (Platycodon grandiflorus) with Zisu (Perilla frutescens).
4.Prospective Study on Tooth Loss and Risk of Esophageal Cancer Among Residents of A Natural Village in Wenfeng District, Anyang City, Henan Province
Jingjing WANG ; Ruihua XU ; Yanfang ZHANG ; Xueke ZHAO ; Qiang ZHANG ; Xin SONG ; Mengxia WEI ; Junfang GUO ; Xuena HAN ; Yaru FU ; Bei LI ; Junqing LIU ; Lingling LEI ; Min LIU ; Qide BAO ; Lidong WANG
Cancer Research on Prevention and Treatment 2025;52(7):548-553
Objective To investigate the relationship between tooth loss and the occurrence of esophageal cancer in a natural village in Wenfeng District, Anyang City, Henan Province. Methods A prospective cohort study was conducted to observe the occurrence of tooth loss and esophageal cancer among the asymptomatic residents of the natural village for 16 years from January 2008 to July 2024. Data were analyzed by chi-square test, binary logistic regression, and restricted cubic spline. Results Among the total population of 711 cases, 136 cases were lost to follow-up and 575 cases were included in the final statistics, including 45 cases with esophageal cancer. Significant statistical difference was found between esophageal cancer patients with and without tooth loss (P<0.05). Logistic regression analysis showed that tooth loss was associated with the occurrence of esophageal cancer (OR=3.977, 95%CI: 1.543-10.255). After the adjustment for confounders, tooth loss
5.Construction of core outcome set for clinical research on traditional Chinese medicine treatment of simple obesity.
Tong-Tong WU ; Yan YU ; Qian HUANG ; Xue-Yin CHEN ; Fu-Ming-Xiang LIU ; Li-Hong YANG ; Chang-Cai XIE ; Shao-Nan LIU ; Yu CHEN ; Xin-Feng GUO
China Journal of Chinese Materia Medica 2025;50(12):3423-3430
Following the core outcome set standards for development(COS-STAD), this study aims to construct core outcome set(COS) for clinical research on traditional Chinese medicine(TCM) treatment of simple obesity. Firstly, a comprehensive review was conducted on the randomized controlled trial(RCT) and systematic review(SR) about TCM treatment of simple obesity that were published in Chinese and English databases to collect reported outcomes. Additional outcomes were obtained through semi-structured interviews with patients and open-ended questionnaire surveys for clinicians. All the collected outcomes were then merged and organized as an initial outcome pool, and then a preliminary list of outcomes was formed after discussion by the working group. Subsequently, two rounds of Delphi surveys were conducted with clinicians, methodology experts, and patients to score the importance of outcomes in the list. Finally, a consensus meeting was held to establish the COS for clinical research on TCM treatment of simple obesity. A total of 221 RCTs and 12 SRs were included, and after integration of supplementary outcomes, an initial outcome pool of 141 outcomes were formed. Following discussions in the steering advisory group meeting, a preliminary list of 33 outcomes was finalized, encompassing 9 domains. Through two rounds of Delphi surveys and a consensus meeting, the final COS for clinical research on TCM treatment of simple obesity was determined to include 8 outcomes: TCM symptom scores, body mass index(BMI), waist-hip ratio, waist circumference, visceral fat index, body fat rate, quality of life, and safety, which were classified into 4 domains: TCM-related outcomes, anthropometric measurements, quality of life, and safety. This study has preliminarily established a COS for clinical research on TCM treatment of simple obesity. It helps reduce the heterogeneity in the selection and reporting of outcomes in similar clinical studies, thereby improving the comparability of research results and the feasibility of meta-analysis and providing higher-level evidence support for clinical practice.
Humans
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Obesity/therapy*
;
Medicine, Chinese Traditional
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Randomized Controlled Trials as Topic
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Treatment Outcome
;
Drugs, Chinese Herbal/therapeutic use*
6.Alleviation of hypoxia/reoxygenation injury in HL-1 cells by ginsenoside Rg_1 via regulating mitochondrial fusion based on Notch1 signaling pathway.
Hui-Yu ZHANG ; Xiao-Shan CUI ; Yuan-Yuan CHEN ; Gao-Jie XIN ; Ce CAO ; Zi-Xin LIU ; Shu-Juan XU ; Jia-Ming GAO ; Hao GUO ; Jian-Hua FU
China Journal of Chinese Materia Medica 2025;50(10):2711-2718
This paper explored the specific mechanism of ginsenoside Rg_1 in regulating mitochondrial fusion through the neurogenic gene Notch homologous protein 1(Notch1) pathway to alleviate hypoxia/reoxygenation(H/R) injury in HL-1 cells. The relative viability of HL-1 cells after six hours of hypoxia and two hours of reoxygenation was detected by cell counting kit-8(CCK-8). The lactate dehydrogenase(LDH) activity in the cell supernatant was detected by the lactate substrate method. The content of adenosine triphosphate(ATP) was detected by the luciferin method. Fluorescence probes were used to detect intracellular reactive oxygen species(Cyto-ROS) levels and mitochondrial membrane potential(ΔΨ_m). Mito-Tracker and Actin were co-imaged to detect the number of mitochondria in cells. Fluorescence quantitative polymerase chain reaction and Western blot were used to detect the mRNA and protein expression levels of Notch1, mitochondrial fusion protein 2(Mfn2), and mitochondrial fusion protein 1(Mfn1). The results showed that compared with that of the control group, the cell activity of the model group decreased, and the LDH released into the cell culture supernatant increased. The level of Cyto-ROS increased, and the content of ATP decreased. Compared with that of the model group, the cell activity of the ginsenoside Rg_1 group increased, and the LDH released into the cell culture supernatant decreased. The level of Cyto-ROS decreased, and the ATP content increased. Ginsenoside Rg_1 elevated ΔΨ_m and increased mitochondrial quantity in HL-1 cells with H/R injury and had good protection for mitochondria. After H/R injury, the mRNA and protein expression levels of Notch1 and Mfn1 decreased, while the mRNA and protein expression levels of Mfn2 increased. Ginsenoside Rg_1 increased the mRNA and protein levels of Notch1 and Mfn1, and decreased the mRNA and protein levels of Mfn2. Silencing Notch1 inhibited the action of ginsenoside Rg_1, decreased the mRNA and protein levels of Notch1 and Mfn1, and increased the mRNA and protein levels of Mfn2. In summary, ginsenoside Rg_1 regulated mitochondrial fusion through the Notch1 pathway to alleviate H/R injury in HL-1 cells.
Ginsenosides/pharmacology*
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Receptor, Notch1/genetics*
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Signal Transduction/drug effects*
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Mice
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Animals
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Mitochondrial Dynamics/drug effects*
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Mitochondria/metabolism*
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Cell Line
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Reactive Oxygen Species/metabolism*
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Oxygen/metabolism*
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Cell Hypoxia/drug effects*
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Cell Survival/drug effects*
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Membrane Potential, Mitochondrial/drug effects*
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Humans
7.Inflammation-related collagen fibril destruction contributes to temporomandibular joint disc displacement via NF-κB activation.
Shengjie CUI ; Yanning GUO ; Yu FU ; Ting ZHANG ; Jieni ZHANG ; Yehua GAN ; Yanheng ZHOU ; Yan GU ; Eileen GENTLEMAN ; Yan LIU ; Xuedong WANG
International Journal of Oral Science 2025;17(1):35-35
Temporomandibular joint (TMJ) disc displacement is one of the most significant subtypes of temporomandibular joint disorders, but its etiology and mechanism are poorly understood. In this study, we elucidated the mechanisms by which destruction of inflamed collagen fibrils induces alterations in the mechanical properties and positioning of the TMJ disc. By constructing a rat model of TMJ arthritis, we observed anteriorly dislocated TMJ discs with aggravated deformity in vivo from five weeks to six months after a local injection of Freund's complete adjuvant. By mimicking inflammatory conditions with interleukin-1 beta in vitro, we observed enhanced expression of collagen-synthesis markers in primary TMJ disc cells cultured in a conventional two-dimensional environment. In contrast, three-dimensional (3D)-cultivated disc cell sheets demonstrated the disordered assembly of inflamed collagen fibrils, inappropriate arrangement, and decreased Young's modulus. Mechanistically, inflammation-related activation of the nuclear factor kappa-B (NF-κB) pathway occurs during the progression of TMJ arthritis. NF-κB inhibition reduced the collagen fibril destruction in the inflamed disc cell sheets in vitro, and early NF-κB blockade alleviated collagen degeneration and dislocation of the TMJ discs in vivo. Therefore, the NF-κB pathway participates in the collagen remodeling in inflamed TMJ discs, offering a potential therapeutic target for disc displacement.
Animals
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NF-kappa B/metabolism*
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Temporomandibular Joint Disorders/pathology*
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Temporomandibular Joint Disc/metabolism*
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Rats
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Rats, Sprague-Dawley
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Disease Models, Animal
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Male
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Collagen/metabolism*
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Cells, Cultured
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Joint Dislocations/pathology*
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Interleukin-1beta
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Arthritis, Experimental
8.Comparison of decompression effects between spine endoscopy hybrid technique and uniportal endoscopic surgery in treatment of lumbar spinal stenosis with bilateral symptom
Song GUO ; Xinhua LI ; Meijun YAN ; Yanbin LIU ; Zhong LIU ; Kewei LI ; Pengcheng LIU ; Beiting ZHANG ; Qiang FU
Chinese Journal of Tissue Engineering Research 2025;29(3):517-523
BACKGROUND:Spinal canal decompression using uniportal endoscopic surgery is a new minimally invasive surgery in the treatment of lumbar spinal stenosis.However,this technique needs a steep learning curve and high requirements for surgical equipment and instruments,which limits its clinical application.We previously use the spinal endoscopy as a monitoring endoscopy and combined with unilateral biportal endoscopy to propose a hybrid technique of spinal endoscopy to achieve coaxial endoscopic operation and hands-separate operation. OBJECTIVE:To compare the clinical outcome of hybrid technique and uniportal endoscopic surgery in treatment of lumbar spinal stenosis with bilateral lower limb pain symptoms. METHODS:Ninety patients diagnosed of lumbar spinal stenosis with bilateral symptoms were included and retrospectively analyzed at First People's Hospital,Shanghai Jiao Tong University from August 2020 to August 2022.44 cases were included in group A(hybrid technique group),while 46 cases were included in group B(uniportal endoscopic surgery).The nerve decompression was observed during the surgery.Operation time,hospital stay time,and expenses were recorded in both groups.The visual analog scale scores of lower back pain and both lower extremities pain,Oswestry disability index scores of quality of life and excellent and good rate of modified Macnab criteria were recorded and compared at preoperative,postoperative 3 days,and postoperative 3 and 6 months. RESULTS AND CONCLUSION:(1)The operation time of group A was significantly shorter than that of group B(P<0.05).(2)The lower back pain and lower extremity pain of the severe side at postoperative 3 days,and 3 and 6 months were significantly relieved in both groups(P<0.05).The visual analog scale score of lower extremity pain on the mild side was significantly decreased at postoperative 3 days,3 and 6 months than preoperative score in the group A(P<0.05).The visual analog scale score of lower extremity pain on the mild side was significantly decreased at postoperative 3 days than preoperative score in the group B(P<0.05).The visual analog scale scores of lower extremity pain on the mild side at postoperative 3 and 6 months did not show significant difference than preoperative score in the group B.The comparison between the two groups showed that there was no significant difference in the visual analog scale scores of postoperative lower back pain and lower extremity pain of the severe side(P>0.05).The visual analog scale scores of lower extremity pain on the mild side in the group A were significantly lower than those of group B at postoperative 3 and 6 months(P<0.05).(3)The Oswestry disability index scores of both groups at postoperative 3 day were significantly lower than preoperative score(P<0.05),and there was no significant difference between the two groups 3 days after operation.Oswestry disability index scores of group A at postoperative 3 and 6 months were significantly decreased than preoperative score(P<0.05).The Oswestry disability index scores of group B at postoperative 3 and 6 months did not show significant differences than preoperative score(P>0.05).The comparison between the two groups showed the Oswestry disability index scores of group A were significantly lower than group B at postoperative 3 and 6 months(P<0.05).(4)The results of modified Macnab showed that the excellent and good rate of group A was significantly higher than that of group B(95%,78%,P<0.05).(5)It is indicated that the hybrid technique is a new spinal endoscopy technique,which has the advantages of less trauma and faster recovery as a minimally invasive surgery.The clinical outcome of hybrid technique is superior to that of uniportal endoscopic surgery in the treatment of lumbar spinal stenosis with bilateral symptoms.Additionally,it also has the advantages of good operational flexibility and high decompression efficiency as an open surgery.
9.Spatio-temporal clustering analysis of influenza in Jiaxing City
WANG Yuanhang ; FU Xiaofei ; QI Yunpeng ; LIU Yang ; ZHOU Wanling ; GUO Feifei
Journal of Preventive Medicine 2025;37(1):55-58
Objective:
To investigate the epidemiological and spatio-temporal characteristics of influenza in Jiaxing City, Zhejiang Province, so as to provide insights into perfecting the prevention and control strategies of influenza.
Methods:
Data of influenza in Jiaxing City from 2019 to 2023 were collected from the Chinese Disease Prevention and Control Information System. Population data of the same period were collected from the Zhejiang Health Information Network Reporting System. The epidemiological characteristics of influenza were analyzed using descriptive analysis. Vector map information was collected from the Open Street Map, and the spatio-temporal clustering characteristics of influenza were analyzed using spatial autocorrelation and spatio-temporal scanning.
Results:
A total of 181 501 cases of influenza were reported in Jiaxing City from 2019 to 2023, with an average annual reported incidence of 653.93/105. The majority of cases were aged 5 to <15 years (59 785 cases, 32.94%). The majority of the occupations were students (78 239 cases, 43.11%) and pre-school children (33 715 cases, 18.58%). The county (city, district) with the highest reported incidence was Haining City (1 451.70/105), and the town (street) with the highest reported incidence was Chang'an Town (1 932.78/105). Spatial autocorrelation analysis showed that the incidence of influenza in Jiaxing City from 2019 to 2023 had positive spatial correlations (all Moran's I>0, all P<0.05), with a high-high clustering in the southern region. Spatio-temporal scanning analysis showed that there was a spatio-temporal clustering of influenza in Jiaxing City from 2019 to 2023, with the southern region being the primary-type clustering area and the period between November and January of the following year being the clustering time.
Conclusion
There was a significant spatio-temporal clustering of influenza in Jiaxing City from 2019 to 2023, with winter being the peak season and the southern region being the primary area.
10.Effects of Rhizosphere Organic Acids on Metabolism of Hairy Roots of Salvia miltiorrhiza
Xinyu FU ; Wenying HAN ; Jidong JU ; Bingqian ZHOU ; Guohong YANG ; Xiao WANG ; Lanping GUO ; Wei LIU
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(18):166-174
ObjectiveTo investigate the effects of rhizosphere organic acids secreted by the roots of Salvia miltiorrhiza on continuous cropping obstacles. MethodsThe mixed solution of organic acids in the rhizosphere of S. miltiorrhiza in continuous cropping and rotation cropping was added to the hairy roots subcultured for 21 days, and samples were collected on days 0, 2, 4, 6, 8, and 10. The changes of biomass, effective components, primary metabolites, secondary metabolites, antioxidant enzymes, and hormones in hairy roots of S. miltiorrhiza were observed and determined. ResultsCompared with the rotation cropping group and the blank control group, the simulation of organic acid secretion from the roots of S. miltiorrhiza had a significant inhibitory effect on the growth of hairy roots and decreased the content of effective components as well as total sugar and total protein in primary metabolites. Compared with the blank control group, the rotation cropping group and the continuous cropping group showed total sugar and total protein content decreases of 33.9% and 5.1%, respectively. On the other hand, the secretion of organic acids from S. miltiorrhiza roots significantly promoted the accumulation of total phenolic acids and total tanshinone, which showed increases of 14.6% and 1.6%, respectively, in continuous cropping group and rotation cropping group compared with the blank control group. ConclusionThe organic acid environment under continuous cropping significantly inhibited the growth of hairy roots and the accumulation of primary metabolites, while promoting the synthesis and accumulation of secondary metabolites of S. miltiorrhiza.


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