1.Phlorizin Ameliorates Glucose and Lipid Metabolism Disorders in T2DM Rats by Modulating IRS-1/PI3K/Akt Signaling Pathway
Nuer AILI ; Qingyu CAO ; Huan LIU ; Junwei HE ; Weihong ZHONG ; Lan CAO
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(3):139-148
ObjectiveTo observe the pharmacodynamic efficacy of phlorizin in improving hepatic glycolipid metabolism disorders in type 2 diabetic mellitus (T2DM) rats and to explore its mechanism of action based on the insulin receptor substrate-1 (IRS-1)/phosphatidylinositol 3-kinase (PI3K)/protein kinase B (Akt) signaling pathway. MethodsA high-fat diet and streptozotocin (STZ) were used to establish T2DM rat models. The rats were randomly assigned into six groups: the blank control group, model group, metformin group (300 mg·kg-1), and phlorizin high-dose (100 mg·kg-1) and low-dose groups (25 mg·kg-1). The rats were given intragastric administration for 6 weeks. The changes in body weight and fasting blood glucose (FBG) were observed, and the oral glucose tolerance test (OGTT) was carried out. The levels of total cholesterol (TC), triglyceride (TG), low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C), glycated serum protein (GSP), aspartate aminotransferase (AST), and alanine aminotransferase (ALT) in serum were detected by an automatic biochemical analyzer. The levels of fasting insulin (FINS), interleukin (IL)-1β, IL-6, and tumour necrosis factor (TNF)-α were detected by enzyme-linked immunosorbent assay (ELISA). The levels of superoxide dismutase (SOD) and malondialdehyde (MDA) were detected by the biochemical assays. The pancreas index, liver index, and insulin resistance index were calculated. Hematoxylin-eosin (HE) staining was used to evaluate the pathological changes in liver and pancreatic tissues. The immunofluorescence method was used to detect the changes in insulin and glucagon in pancreatic tissue. Western blot was used to detect the expression of related proteins in the IRS-1/PI3K/Akt pathway of liver tissue and its downstream glycogen synthase kinase-3β (GSK-3β) and forkhead box transcription factor O1 (FoxO1) proteins. ResultsCompared with the blank control group, the body weight of rats in the model group continued to decrease, while the FBG level increased significantly. The area under the OGTT blood glucose curve (AUC), GSP, TC, TG, LDL-C, IL-1β, IL-6, TNF-α, MDA, pancreatic index and liver index increased significantly, while the levels of HDL-C, SOD, and FINS decreased significantly (P0.05, P0.01). Histological results showed that the pancreatic islets of rats in the model group exhibited atrophy and severe structural abnormalities. The insulin-positive β-cells decreased significantly (P0.01), while the glucagon-positive α-cells increased significantly (P0.01). Inflammatory cell infiltration and partial necrosis were observed in the liver tissues of the model group rats. The expressions of p-IRS-1/IRS-1, p-GSK-3β/GSK-3β, and p-FoxO1/FoxO1 proteins in the liver of the model group increased significantly (P0.01), while the expressions of p-PI3K/PI3K and p-Akt/Akt proteins decreased significantly (P0.01). Compared with the model group, the diabetic symptoms of rats in all administration groups were improved. The changes in body weight and FBG were close to those of the blank control group. The levels of OGTT-AUC, GSP, TC, TG, LDL-C, MDA, IL-1β, IL-6, TNF-α and the pancreatic index, liver index were obviously reduced (P0.05, P0.01), while the levels of HDL-C, SOD, and FINS obviously increased (P0.05, P0.01). The pathological changes of the pancreas and liver in rats in all treatment groups were effectively improved. The insulin-positive β-cells in the pancreas increased significantly (P0.01), while the glucagon-positive α-cells decreased significantly (P0.01). The protein expressions of p-IRS-1/IRS-1, p-GSK-3β/GSK-3β, and p-FoxO1/FoxO1 in the liver were significantly reduced (P0.01), while the protein expressions of p-PI3K/PI3K and p-Akt/Akt significantly increased (P0.01). ConclusionPhlorizin reversed the weight loss and abnormal increase of FBG in T2DM rats, improved blood lipid profiles, oxidative stress, and inflammatory levels, alleviated insulin resistance, and had certain protective effects on the liver and pancreas. The hypoglycemic mechanism may involve regulating the IRS-1/PI3K/Akt signaling pathway to inhibit the activities of GSK-3β and FoxO1, thereby promoting liver glycogen synthesis and suppressing hepatic gluconeogenesis, ultimately improving glycolipid metabolism disorders.
2.Phlorizin Ameliorates Glucose and Lipid Metabolism Disorders in T2DM Rats by Modulating IRS-1/PI3K/Akt Signaling Pathway
Nuer AILI ; Qingyu CAO ; Huan LIU ; Junwei HE ; Weihong ZHONG ; Lan CAO
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(3):139-148
ObjectiveTo observe the pharmacodynamic efficacy of phlorizin in improving hepatic glycolipid metabolism disorders in type 2 diabetic mellitus (T2DM) rats and to explore its mechanism of action based on the insulin receptor substrate-1 (IRS-1)/phosphatidylinositol 3-kinase (PI3K)/protein kinase B (Akt) signaling pathway. MethodsA high-fat diet and streptozotocin (STZ) were used to establish T2DM rat models. The rats were randomly assigned into six groups: the blank control group, model group, metformin group (300 mg·kg-1), and phlorizin high-dose (100 mg·kg-1) and low-dose groups (25 mg·kg-1). The rats were given intragastric administration for 6 weeks. The changes in body weight and fasting blood glucose (FBG) were observed, and the oral glucose tolerance test (OGTT) was carried out. The levels of total cholesterol (TC), triglyceride (TG), low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C), glycated serum protein (GSP), aspartate aminotransferase (AST), and alanine aminotransferase (ALT) in serum were detected by an automatic biochemical analyzer. The levels of fasting insulin (FINS), interleukin (IL)-1β, IL-6, and tumour necrosis factor (TNF)-α were detected by enzyme-linked immunosorbent assay (ELISA). The levels of superoxide dismutase (SOD) and malondialdehyde (MDA) were detected by the biochemical assays. The pancreas index, liver index, and insulin resistance index were calculated. Hematoxylin-eosin (HE) staining was used to evaluate the pathological changes in liver and pancreatic tissues. The immunofluorescence method was used to detect the changes in insulin and glucagon in pancreatic tissue. Western blot was used to detect the expression of related proteins in the IRS-1/PI3K/Akt pathway of liver tissue and its downstream glycogen synthase kinase-3β (GSK-3β) and forkhead box transcription factor O1 (FoxO1) proteins. ResultsCompared with the blank control group, the body weight of rats in the model group continued to decrease, while the FBG level increased significantly. The area under the OGTT blood glucose curve (AUC), GSP, TC, TG, LDL-C, IL-1β, IL-6, TNF-α, MDA, pancreatic index and liver index increased significantly, while the levels of HDL-C, SOD, and FINS decreased significantly (P0.05, P0.01). Histological results showed that the pancreatic islets of rats in the model group exhibited atrophy and severe structural abnormalities. The insulin-positive β-cells decreased significantly (P0.01), while the glucagon-positive α-cells increased significantly (P0.01). Inflammatory cell infiltration and partial necrosis were observed in the liver tissues of the model group rats. The expressions of p-IRS-1/IRS-1, p-GSK-3β/GSK-3β, and p-FoxO1/FoxO1 proteins in the liver of the model group increased significantly (P0.01), while the expressions of p-PI3K/PI3K and p-Akt/Akt proteins decreased significantly (P0.01). Compared with the model group, the diabetic symptoms of rats in all administration groups were improved. The changes in body weight and FBG were close to those of the blank control group. The levels of OGTT-AUC, GSP, TC, TG, LDL-C, MDA, IL-1β, IL-6, TNF-α and the pancreatic index, liver index were obviously reduced (P0.05, P0.01), while the levels of HDL-C, SOD, and FINS obviously increased (P0.05, P0.01). The pathological changes of the pancreas and liver in rats in all treatment groups were effectively improved. The insulin-positive β-cells in the pancreas increased significantly (P0.01), while the glucagon-positive α-cells decreased significantly (P0.01). The protein expressions of p-IRS-1/IRS-1, p-GSK-3β/GSK-3β, and p-FoxO1/FoxO1 in the liver were significantly reduced (P0.01), while the protein expressions of p-PI3K/PI3K and p-Akt/Akt significantly increased (P0.01). ConclusionPhlorizin reversed the weight loss and abnormal increase of FBG in T2DM rats, improved blood lipid profiles, oxidative stress, and inflammatory levels, alleviated insulin resistance, and had certain protective effects on the liver and pancreas. The hypoglycemic mechanism may involve regulating the IRS-1/PI3K/Akt signaling pathway to inhibit the activities of GSK-3β and FoxO1, thereby promoting liver glycogen synthesis and suppressing hepatic gluconeogenesis, ultimately improving glycolipid metabolism disorders.
3.Expert consensus on neoadjuvant PD-1 inhibitors for locally advanced oral squamous cell carcinoma (2026)
LI Jinsong ; LIAO Guiqing ; LI Longjiang ; ZHANG Chenping ; SHANG Chenping ; ZHANG Jie ; ZHONG Laiping ; LIU Bing ; CHEN Gang ; WEI Jianhua ; JI Tong ; LI Chunjie ; LIN Lisong ; REN Guoxin ; LI Yi ; SHANG Wei ; HAN Bing ; JIANG Canhua ; ZHANG Sheng ; SONG Ming ; LIU Xuekui ; WANG Anxun ; LIU Shuguang ; CHEN Zhanhong ; WANG Youyuan ; LIN Zhaoyu ; LI Haigang ; DUAN Xiaohui ; YE Ling ; ZHENG Jun ; WANG Jun ; LV Xiaozhi ; ZHU Lijun ; CAO Haotian
Journal of Prevention and Treatment for Stomatological Diseases 2026;34(2):105-118
Oral squamous cell carcinoma (OSCC) is a common head and neck malignancy. Approximately 50% to 60% of patients with OSCC are diagnosed at a locally advanced stage (clinical staging III-IVa). Even with comprehensive and sequential treatment primarily based on surgery, the 5-year overall survival rate remains below 50%, and patients often suffer from postoperative functional impairments such as difficulties with speaking and swallowing. Programmed death receptor-1 (PD-1) inhibitors are increasingly used in the neoadjuvant treatment of locally advanced OSCC and have shown encouraging efficacy. However, clinical practice still faces key challenges, including the definition of indications, optimization of combination regimens, and standards for efficacy evaluation. Based on the latest research advances worldwide and the clinical experience of the expert group, this expert consensus systematically evaluates the application of PD-1 inhibitors in the neoadjuvant treatment of locally advanced OSCC, covering combination strategies, treatment cycles and surgical timing, efficacy assessment, use of biomarkers, management of special populations and immune related adverse events, principles for immunotherapy rechallenge, and function preservation strategies. After multiple rounds of panel discussion and through anonymous voting using the Delphi method, the following consensus statements have been formulated: 1) Neoadjuvant therapy with PD-1 inhibitors can be used preoperatively in patients with locally advanced OSCC. The preferred regimen is a PD-1 inhibitor combined with platinum based chemotherapy, administered for 2-3 cycles. 2) During the efficacy evaluation of neoadjuvant therapy, radiographic assessment should follow the dual criteria of Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1 and immune RECIST (iRECIST). After surgery, systematic pathological evaluation of both the primary lesion and regional lymph nodes is required. For combination chemotherapy regimens, PD-L1 expression and combined positive score need not be used as mandatory inclusion or exclusion criteria. 3) For special populations such as the elderly (≥ 70 years), individuals with stable HIV viral load, and carriers of chronic HBV/HCV, PD-1 inhibitors may be used cautiously under the guidance of a multidisciplinary team (MDT), with close monitoring for adverse events. 4) For patients with a poor response to neoadjuvant therapy, continuation of the original treatment regimen is not recommended; the subsequent treatment plan should be adjusted promptly after MDT assessment. Organ transplant recipients and patients with active autoimmune diseases are not recommended to receive neoadjuvant PD-1 inhibitor therapy due to the high risk of immune related activation. Rechallenge is generally not advised for patients who have experienced high risk immune related adverse events such as immune mediated myocarditis, neurotoxicity, or pneumonitis. 5) For patients with a good pathological response, individualized de escalation surgery and function preservation strategies can be explored. This consensus aims to promote the standardized, safe, and precise application of neoadjuvant PD-1 inhibitor strategies in the management of locally advanced OSCC patients.
4.Mechanism of Fresh Cutting of Traditional Chinese Medicine: Discussion on Integration of Traditional Wisdom and Modern Technology
Wenjie BAO ; Lingyun ZHONG ; Wenhua WU ; Congmin LIU ; Zixin CHEN ; Xingmei LU ; Hengli TONG ; Yi HUANG
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(7):282-290
Fresh-cut processing constitutes a pivotal technique in the origin processing of Chinese medicinal materials, with a long history documented in multiple materia medica. In recent years, it has garnered national policy support for its ability to prevent component loss and low processing efficiency associated with traditional drying-before-cutting methods. As of August 2025, 26 provinces and municipalities nationwide have cumulatively published 789 species for fresh-cut processing. Among these, 78 were included in the 2025 edition of the Pharmacopoeia of the People's Republic of China. However, the practice continues to face common challenges and difficulties, including ambiguous scientific understanding, fragmented standards, limited quality control approaches, and poor process stability. Based on this, this paper synthesises years of research findings to systematically elucidate the core mechanisms of fresh-cut processing. These encompass alterations to herbal tissue structure during cutting, post-processing changes in constituents, and physiological-biochemical processes such as plant stress responses and shifts in endogenous enzyme activity. It also summarises influencing factors, including inherent herbal properties, cutting timing and methods, and environmental conditions like temperature, humidity, and microbial presence. Based on this overview of fresh-cutting mechanisms, subsequent research should advance in four directions:Clarifying the scientific principles of fresh-cutting, overcoming technical bottlenecks, upgrading intelligent equipment, and establishing quality standards and evaluation systems. This study provides a theoretical foundation and scientific basis for future research on fresh-cutting in traditional Chinese medicine(TCM), promoting its deeper practical application within the industry and contributing to the high-quality development of TCM industry and the modernization of TCM.
5.Expert consensus on perioperative nursing care for myasthenia gravis patients undergoing thymectomy
Huimin DONG ; Ting ZHOU ; Yingmei ZHONG ; Wei LI ; Xiaoyan LI ; Chunfang ZHANG ; Guoyan QI ; Yangchun LIU
Chinese Journal of Clinical Thoracic and Cardiovascular Surgery 2026;33(01):1-12
Myasthenia gravis is an autoimmune disorder characterized by impaired neuromuscular transmission. Thymectomy is one of the therapeutic options for acetylcholine receptor antibody-positive myasthenia gravis patients. The quality of perioperative care is directly associated with surgical safety and patient outcomes. However, there is currently a lack of specialized nursing consensus or guidelines specifically addressing the care of these patients domestically or internationally. To promote the standardization and normalization of perioperative nursing care for myasthenia gravis patients undergoing thymectomy and to ensure treatment efficacy, a panel of 57 experts from relevant fields was convened. Based on evidence-based medicine and clinical practice experience, discussions were held on various aspects including condition assessment, nutritional support, medication management, and airway care, resulting in a consensus with 18 final recommendations by using the Delphi method through two rounds of expert consultation. This consensus aims to provide a scientific reference for the perioperative nursing care of myasthenia gravis patients undergoing thymectomy.
6.Mechanism and Clinical Research Progress of Puerarin in Treatment of Chronic Heart Failure
Wenjie LU ; Siqi ZHONG ; Lu ZHANG ; Wenting LIN ; Zhijun ZENG ; Shaohua WANG
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(8):327-336
Chronic heart failure (CHF) is an end-stage cardiac syndrome driven by multiple factors. Its pathological process involves interactions of multiple pathways such as energy metabolism dysfunction, neuroendocrine dysregulation, and myocardial fibrosis. Although current clinical medicine can alleviate symptoms through single-target approaches, significant limitations in reversing cardiac remodeling and disease progression remain. Puerarin, a major bioactive isoflavone constituent derived from Pueraria lobata, exhibits multidimensional pharmacological effects, such as vasodilatory effects, regulation of neuroendocrine balance, enhancement of metabolic homeostasis, and suppression of myocardial apoptosis. This review systematically integrated puerarin's multi-target regulatory network, elucidating its mechanisms such as improving energy metabolism by AMP-activated protein kinase/mechanistic target of rapamycin (AMPK/mTOR) pathway, inhibiting fibrosis mediated by transforming growth factor-β (TGF-β)/Smad signals, and attenuating oxidative-inflammatory cascades by regulating nuclear factor erythroid 2 (E2)-related factor 2/nuclear transcription factor-κB(Nrf2/NF-κB) axis. Clinical research data was used to validate its efficacy in improving the left ventricular ejection function and reducing the therapeutic potential of cardiovascular events' risks. The study proposed that puerarin's "systemic regulation" characteristic breaks through the limitations of traditional single-target drugs and prospected its clinical translation pathway based on metabolomics and nano-delivery technology, offering an integrative perspective from molecular mechanisms to precise therapy for the research on modernization of traditional Chinese medicine.
7.Mechanism and Clinical Research Progress of Puerarin in Treatment of Chronic Heart Failure
Wenjie LU ; Siqi ZHONG ; Lu ZHANG ; Wenting LIN ; Zhijun ZENG ; Shaohua WANG
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(8):327-336
Chronic heart failure (CHF) is an end-stage cardiac syndrome driven by multiple factors. Its pathological process involves interactions of multiple pathways such as energy metabolism dysfunction, neuroendocrine dysregulation, and myocardial fibrosis. Although current clinical medicine can alleviate symptoms through single-target approaches, significant limitations in reversing cardiac remodeling and disease progression remain. Puerarin, a major bioactive isoflavone constituent derived from Pueraria lobata, exhibits multidimensional pharmacological effects, such as vasodilatory effects, regulation of neuroendocrine balance, enhancement of metabolic homeostasis, and suppression of myocardial apoptosis. This review systematically integrated puerarin's multi-target regulatory network, elucidating its mechanisms such as improving energy metabolism by AMP-activated protein kinase/mechanistic target of rapamycin (AMPK/mTOR) pathway, inhibiting fibrosis mediated by transforming growth factor-β (TGF-β)/Smad signals, and attenuating oxidative-inflammatory cascades by regulating nuclear factor erythroid 2 (E2)-related factor 2/nuclear transcription factor-κB(Nrf2/NF-κB) axis. Clinical research data was used to validate its efficacy in improving the left ventricular ejection function and reducing the therapeutic potential of cardiovascular events' risks. The study proposed that puerarin's "systemic regulation" characteristic breaks through the limitations of traditional single-target drugs and prospected its clinical translation pathway based on metabolomics and nano-delivery technology, offering an integrative perspective from molecular mechanisms to precise therapy for the research on modernization of traditional Chinese medicine.
8.Invasion and Metastasis in Colorectal Cancer Mediated by Traditional Chinese Medicine via Cell Signaling Pathway: A Review
Min GUO ; Wenyan YU ; Naicheng ZHU ; Yuwei YAN ; Chen ZHONG ; Xiudan CHEN ; Nanxin LI ; Guojuan WANG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(4):323-330
Colorectal cancer is a common and malignant tumor in the digestive tract. Invasion and metastasis of cancer cells are key factors leading to the high mortality rate and postoperative recurrence of colorectal cancer. Chemotherapy is the main treatment method for preventing recurrence of this disease. However, there are many toxic side effects in clinical application, which seriously hinder the treatment process. Therefore, it is imperative to search for efficient and low-toxicity drugs. Traditional Chinese medicine (TCM) has a long history of treating colorectal cancer and offers advantages such as safety, effectiveness, multiple targets, multiple pathways and minimal toxic side effects, which have made it increasingly popular worldwide. According to TCM, the pathogenesis of colorectal cancer is rooted in both deficiency and excess. TCM formulas mainly focus on tonifying the body to address the invasion and metastasis of colorectal cancer, such as Jianpi compound, Jianpi Xiaoai decoction, and Bushen Jiedu Sanjie decoction. TCM monomers, such as emodin, berberine, and tanshinone, mainly focus on clearing heat and removing toxin, circulating blood and transforming stasis, and resolving swelling and dispersing nodules. Signaling pathways play a crucial role for analyzing invasion and metastasis, and research has shown that pathways such as Wnt/β-catenin, phosphatidylinositol-3 kinase/protein kinase (PI3K/Akt), Janus kinase 2/signal transduction and transcription activating factor 3 (JAK2/STAT3), nuclear factors-κB (NF-κB), vascular endothelial growth factor (VEGF) play important roles in the invasion and metastasis of colorectal cancer. The invasion and metastasis of colorectal cancer can be inhibited via regulating the key proteins and related factors in these pathways. In this review, we searched various literature databases, such as PubMed, China National Knowledge Infrastructure (CNKI), and VIP, using keywords such as "colorectal cancer", "signaling pathway", "invasion and metastasis", and "traditional Chinese medicine", to summarize and analyze the relevant pathways of TCM compounds and monomers against invasion and metastasis of colorectal cancer published in the past five years. The review aims to provide new insights and references for in-depth research on the therapy for invasion and metastasis of colorectal cancer and new drug development.
9.The level of HBV cccDNA in liver tissue and its clinical significance in patients in the convalescence stage of hepatitis B virus-related acute-on-chronic liver failure
Zhekai CAI ; Long XU ; Wenli LIU ; Yingqun XIAO ; Qingmei ZHONG ; Wei ZHANG ; Min WU
Journal of Clinical Hepatology 2025;41(1):57-62
ObjectiveTo investigate the expression level of HBV cccDNA in patients in the convalescence stage of hepatitis B virus-related acute-on-chronic liver failure (HBV-ACLF) and its correlation with HBV markers and liver histopathological changes. MethodsA total of 30 patients in the convalescence stage of HBV-ACL who were hospitalized in The Ninth Hospital of Nanchang from January 2015 to October 2023 were enrolled as liver failure group, and 9 patients with chronic hepatitis B (CHB), matched for sex and age, were enrolled as control group. The content of HBV cccDNA in liver tissue was measured, and its correlation with clinical data and laboratory markers was analyzed. The independent-samples t test or the Mann-Whitney U test was used for comparison of continuous data between two groups, and a one-way analysis of variance or the Kruskal-Wallis H test was used for comparison between multiple groups; the Fisher’s exact test was used for comparison of categorical data between groups. A Spearman correlation analysis was performed. ResultsThe liver failure group had a significantly lower content of HBV cccDNA in liver tissue than the control group (-0.92±0.70 log10 copies/cell vs -0.13±0.91 log10 copies/cell, t=2.761, P=0.009). In the liver failure group, there was no significant difference in the content of HBV cccDNA in liver tissue between the HBeAg-positive patients and the HBeAg-negative patients (P>0.05); there was no significant difference in the content of HBV cccDNA in liver tissue between the patients with different grades (G0-G2, G3, and G4) of liver inflammatory activity (P>0.05); there was no significant difference in the content of HBV cccDNA in liver tissue between the patients with different stages (S0-S2, S3, and S4) of liver fibrosis (P>0.05); there was no significant difference in the content of HBV cccDNA in liver tissue between the patients with negative HBV DNA and those with positive HBV DNA (P>0.05). For the liver failure group, the content of HBV cccDNA in liver tissue was positively correlated with the content of HBV DNA in liver tissue (r=0.426, P=0.043) and was not significantly correlated with the content of HBV DNA in serum (P>0.05). ConclusionThere is a significant reduction in the content of HBV cccDNA in liver tissue in the convalescence stage of HBV-ACLF. HBV cccDNA exists continuously and stably in liver tissue and can better reflect the persistent infection and replication of HBV than HBV DNA in serum and liver tissue.
10.Exploring Mechanism of Breast Cancer Prevention by Liuwei Dihuangwan, Erzhiwan and Zuoguiwan Based on Macrophage Phagocytosis
Lixiang ZHENG ; Yishan CHEN ; Wei QUAN ; Youbao ZHONG ; Zifeng GUO
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(10):10-17
ObjectiveTo investigate the effects of three traditional Chinese medicine formulas for nourishing kidney Yin on the occurrence of breast cancer, including Zuoguiwan(ZGW), Liuwei Dihuangwan(LWDHW) and Erzhiwan(EZW), and to explore their preventive mechanisms from the phagocytic function of macrophages. MethodsTen-month-old post-breeding female mice were randomly divided into the blank group, soy isoflavone group(0.13 g·kg-1·d-1, mixed with feed), ZGW group(2.34 g·kg-1·d-1), LWDHW group(0.56 g·kg-1·d-1), and EZW group(4.68 g·kg-1·d-1). The mice were palpated every 3 d until the age of 18 months, and those with detected lumps were confirmed for tumor development through hematoxylin-eosin(HE) staining, and the incidence of breast cancer in mice was calculated. A total of 40 SPF-grade female SD rats were randomly divided into the blank serum group(physiological saline), ZGW drug-containing serum group(16.20 g·kg-1·d-1of ZGW), LWDHW drug-containing serum group(3.89 g·kg-1·d-1 of LWDHW) and EZW drug-containing serum group(32.40 g·kg-1·d-1 of EZW), each group was orally administered 3 times a day for 5 consecutive days. On the 5th day, blood was collected from the abdominal aorta 1 h after the last gavage to prepare drug-containing serum. The effect of drug-containing serum with different concentrations on the viability of RAW264.7 cells was assessed by cell counting kit-8(CCK-8). Taking 20% of drug-containing serum concentration as the research object, its effect on the expression levels of major histocompatibility complex-Ⅱ(MHC-Ⅱ), CD80 and CD86 on the surface of RAW264.7 cells was detected by immunofluorescence(IF), the phagocytic function of RAW264.7 cells was examined by flow cytometry, and the levels of interleukin-6(IL-6) and nitric oxide(NO) in RAW264.7 cells in the conditioned medium(CM) co culture system of 4T1 cells were detected by enzyme-linked immunosorbent assay(ELISA) and Griess assay. ResultsAfter prophylactic administration, the tumor incidence rates in the soy isoflavone group(4%), ZGW group(4%), LWDHW group(4%), and EZW group(6%) were lower than that in the blank group(8%). Compared with the blank serum group, the drug-containing serum of the three nourishing kidney Yin formulas could enhance the expression levels of MHC-Ⅱ, CD80 and CD86 on the surface of RAW264.7 cells, enhance phagocytic ability towards tumor cells, and reduce the content of IL-6 and increase the level of NO(P<0.05, P<0.01). ConclusionThe three nourishing kidney Yin formulas can reduce the incidence of tumor in mice, the mechanism may be related to activating RAW264.7 cells, increasing their phagocytosis to breast cancer cells, and regulating the secretion of IL-6 and NO.


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