1.Association of mixed exposure to lithium, vanadium, uranium, and bismuth in early pregnancy with gestational weight gain
Jiao LI ; Qi LI ; Shuang CHENG ; Jiayi SONG ; Xiaohui GUO ; Xiang WANG ; Di CHENG ; Kefeng FAN ; Ju WANG
Journal of Environmental and Occupational Medicine 2026;43(4):475-484
Background Gestational weight gain is closely related to maternal and infant health outcomes. Pregnant women are simultaneously exposed to four metals—lithium (Li), vanadium (V), uranium (U), and bismuth (Bi)—through inhalation of fine particulate matter and consumption of contaminated food and water. Existing studies suggest that exposure to these metals may be associated with gestational weight gain. However, no study has yet explored the complex relationships between exposure to mixtures of these four metals and weight gain at different stages of pregnancy. Objective To investigate the associations between mixed exposure to Li, V, U, and Bi in early pregnancy and the average weekly gestational weight gain during both early pregnancy and mid-to-late pregnancy. Methods This prospective study recruited eligible women in early pregnancy from an obstetrics clinic of a tertiary hospital in Jinan, China, between September 2021 and July 2023. Pre-pregnancy weight, current weight (at 11+0 to 13+6 weeks of gestation), and spot urine samples (≥5.0 mL) were collected at enrollment. Urinary concentrations of Li, V, Bi, and U were determined using inductively coupled plasma mass spectrometry. Participants were followed up in late pregnancy (≥28 weeks of gestation) to collect information on physical activity via questionnaire; weight measurements at the last antenatal visit (35+0 to 37+6 weeks of gestation) were obtained from the hospital information system. After adjusting for covariates, multiple linear regression and generalized additive models were used to assess the associations of individual metals with weekly weight gain in early pregnancy and in mid-to-late pregnancy. Bayesian kernel machine regression (BKMR) and quantile-based g-computation (Qgcomp) were applied to evaluate the joint effects of the metal mixture exposure on weekly weight gain at the two gestational stages. Results A total of 313 pregnant women were included. The geometric means of urinary Li, V, U, and Bi concentrations were 37.07, 0.20, 0.06, and 0.04 μg·L−1, respectively; after creatinine adjustment, the corresponding values were 46.82, 0.25, 0.07, and 0.05 μg·g−1 (Cr). The mean weekly gestational weight gain was (0.19±0.25) kg in early pregnancy and (0.53 ± 0.18) kg in mid-to-late pregnancy. Both multiple linear regression and generalized additive models showed that urinary V concentration was positively associated with average weekly gestational weight gain in early pregnancy, while no significant associations were found for other metals or for gestational weight gain in mid-to-late pregnancy. In the BKMR model with early-pregnancy weight gain as the outcome, V had the strongest association [posterior inclusion probability (PIP)=0.773]. When other metals were fixed at their medians, V showed a positive non-linear association with the outcome. A significant single-metal effect of V and its interaction with Li were observed. Compared with the 50th percentile of the metal mixture, the average weekly weight gain in early pregnancy increased by 0.016 (95%CI: 0.003, 0.029) and 0.018 (95%CI: 0.001, 0.036) at the 60th and 65th percentiles, respectively; conversely, at the 25th percentile, it decreased by 0.026 (95%CI: 0.002, 0.050). Overall, the joint effect of the metal mixture on early- pregnancy weight gain showed an upward trend. In the BKMR model for mid-to-late pregnancy gestational weight gain, all PIPs were<0.5, and no significant single-metal effects, interactions, or joint effects were identified. Qgcomp results confirmed a positive association between the metal mixture and early-pregnancy weight gain (b=0.031, 95%CI: 0.010, 0.051; P<0.01), with V contributing the highest positive weight (0.71). No significant association was found for weight gain in mid-to-late pregnancy (b=0.007, P=0.339). Conclusion Higher levels of co-exposure to the Li, V, Bi, and U metal mixture during early pregnancy may be associated with increased average weekly weight gain in early pregnancy. Among these metals, V exhibits a predominant role and appears to interact with Li. No association is observed between early-pregnancy metal mixture exposure and average weekly gestational weight gain in mid-to-late pregnancy. These findings suggest that monitoring and managing metal exposure during early pregnancy may be crucial for the rational regulation of gestational weight gain.
2.Banxia Baizhu Tianmatang Regulates NLRP3 Inflammasomes to Ameliorate Cognitive Impairment in Epilepsy
Xingdan ZHU ; Yinhua KAI ; Rong TIAN ; Xin YANG ; Jiayi HE ; Xiangxin GUO ; Yadong MU ; Cui JIANG
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(14):308-316
ObjectiveTo explore the mechanism through which Banxia Baizhu Tianmatang ameliorates cognitive impairment in epileptic rats induced by lithium chloride-pilocarpine by regulating the neuroinflammatory reaction mediated by NOD-like receptor protein 3 (NLRP3) inflammasomes. MethodsSixty male SD rats were randomly allocated into blank, model, carbamazepine (0.125 g·kg-1·d-1), Banxia Baizhu Tianmatang (1.04 g·kg-1·d-1), and carbamazepine (0.125 g·kg-1·d-1) + Banxia Baizhu Tianmatang (1.04 g·kg-1·d-1) groups (n=12). After the modeling of epilepsy, rats were administrated with corresponding agents by gavage for 12 weeks. At the 6th and 12th week of the intervention, the rats’ hyper-excited behavior was evaluated by the stylus experiment, and at the 12th week of intervention, the cognitive function was evaluated by Barnes maze. At the same time, the seizure frequency and severity grade (Racine score) were recorded. The serum and hippocampus tissue samples were collected after anesthesia for the following tests. Nissl staining was used to evaluate the degree of neuronal damage in the hippocampal CA1 area. The content of malondialdehyde (MDA) in the hippocampus was determined by the thiobarbituric acid (TBA) method. Serum levels of tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), and interleukin-18 (IL-18) were quantified by enzyme-linked immunosorbent assay (ELISA). Immunohistochemical method was adopted to detect the expression of apoptosis-associated speck-like protein containing a card (ASC) in the hippocampus. Western blot was employed to quantitatively analyze the protein levels of NLRP3, cysteinyl aspartate-specific proteinase-1 (Caspase-1), and brain-derived neurotrophic factor (BDNF) in the hippocampus. ResultsThe model group showed increased stylus scores at the 6th and 12th week after modeling, a decreased Barnes maze strategy score at the 12th week, a prolonged incubation period (P<0.05), elevated serum levels of inflammatory factors (P<0.05), decreased neurons with scattered arrangement and large gaps in the hippocampus, increased content of MDA in the hippocampus (P<0.05), an increased positive expression of ASC, and up-regulated protein levels of Caspase-1, NLRP3, and BDNF (P<0.05). Compared with the model group, the intervention with Banxia Baizhu Tianmatang for 12 weeks was accompanied by a decreased stylus score, epileptic seizures with a decreased score, a decreased number, and shortened duration, an increased Barnes maze strategy score, shortened escape latency (P<0.01), declined serum levels of inflammatory factors (P<0.05), regular morphology of hippocampal neurons, reduced MDA content in the hippocampus (P<0.05), a decreased positive expression of ASC, and down-regulated protein levels of Caspase-1, NLRP3, and BDNF (P<0.05, P<0.01). In addition, compared with the carbamazepine group, Banxia Baizhu Tianmatang + carbamazepine showed improved performance in controlling the seizure, improved the cognitive behavior score and morphology of hippocampal neurons, alleviated the oxidative stress products, lowered the levels of inflammatory factors, reduced the positive expression of ASC in the hippocampus, and down-regulated the expression of Caspase-1, NLRP3 and BDNF, with no significant differences. ConclusionBanxia Baizhu Tianmatang may reduce neuroinflammation, control epileptic seizures, and ameliorate cognitive impairment by inhibiting the expression of NLRP3 inflammasomes.
3.Professor ZHOU Shaohua's Experience in Staged Treatment of Parkinson's Disease Based on the "Disease-Symptom-Syndrome Integration" Approach
Dinglin XU ; Jiayi WANG ; Liwei GE ; Chunli GUO ;
Journal of Traditional Chinese Medicine 2026;67(13):1373-1377
This paper aims to summarize Professor ZHOU Shaohua's clinical experience in treating Parkinson's disease (PD) based on the "disease-symptom-syndrome integration" approach. It is believed that kidney essence deficiency is the root cause of the disease, and phlegm-stasis accumulating toxin is the key factor for its deterioration. PD could be divided into the prodromal stage, early stage and middle-late stage. In the prodromal stage, treatment focuses on tonifying the kidney and replenishing marrow, choosing Zuogui Pill (左归丸) or Yougui Pill (右归丸) to prescribe with modifications according to accompanying non-motor symptoms such as constipation and rapid eye movement sleep behavior disorder. For the early stage, the disease is differentiated into three syndromes, liver-kidney yin deficiency with stirring wind, spleen-kidney yang deficiency, and excessive phlegm turbidity, then following the principle of "calming wind by regulating blood first", the basic prescriptions of Dading Fengzhu Pill (大定风珠), Yougui Pill (右归丸) and Jinshui Liujun Decoction (金水六君煎) are applied respectively, combined with Siwu Decoction (四物汤) to nourish blood and extinguish wind. For the middle-late stage, therapies of tonifying the kidney and conso-lidating original qi are combined with detoxifying and resolving turbidity, prescribing fleshy and nourishing medicinals such as deer-horn glue (Cervus nippon Temminck) and turtle shell glue (Colla Carapacis et Plastri Testudinis), together with Huanglian Jiedu Decoction (黄连解毒汤) to clear heat, detoxify and resolve turbidity, implementing simultaneous tonification and elimination. Integrated traditional Chinese and western medicine intervention is emphasized for non-motor symptoms including orthostatic hypotension and dysphagia.
4.Exploring Pathogenesis and Treatment of Primary Osteoporosis from Theory of Qi Deficiency and Stagnation and Mitochondrial Autophagy
Jiali ZHANG ; Yubin ZHANG ; Ruoying SONG ; Jianqiang LI ; Feng LI ; Jiayi GUO
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(20):230-241
Primary osteoporosis (POP) is a metabolic bone disease characterized by reduced bone mass, degenerated bone microstructure, and increased bone fragility. Its pathogenesis involves the interaction of multiple factors such as genetics, aging, endocrine, and environment, which remain incompletely elucidated. Mitochondrial dysfunction can lead to insufficient adenosine triphosphate (ATP) production and abnormal accumulation of reactive oxygen species (ROS), activating oxidative stress and inflammation pathways, thereby inhibiting osteoblast differentiation and promoting osteoclast activation, exacerbating the negative bone metabolism balance in POP. Mitochondrial autophagy, as the core mechanism of mitochondrial quality control, selectively identifies and clears damaged mitochondria to effectively reduce ROS accumulation and energy metabolism disorders, thus maintaining the balance between osteoblast and osteoclast differentiation. It plays a critical role in maintaining bone homeostasis and the prevention and treatment of POP. The traditional Chinese medicine (TCM) theory of Qi transformation shares similarities with the functions of mitochondria in energy generation and substance conversion. The pathological state of Qi deficiency and stagnation may be associated with mitochondrial autophagy dysfunction, and the pathogenic characteristics of combined phlegm and stasis align with the metabolic waste accumulation induced by obstructed autophagy flow. This article explores the correlation of the theory of Qi deficiency and stagnation with mitochondrial autophagy and elucidates its potential role in the pathogenesis of POP. Additionally, considering the pathogenesis features of POP, which involve deficiency causing stagnation and a mixture of deficiency and excess, this article proposes a novel therapeutic approach: tonifying Qi to support the body and unblocking collaterals to resolve stagnation from the perspective of mitochondrial autophagy. This article aims to provide theoretical support and research insights for further exploration of TCM in the prevention and treatment of POP.
5.Exploring Pathogenesis and Treatment of Primary Osteoporosis from Theory of Qi Deficiency and Stagnation and Mitochondrial Autophagy
Jiali ZHANG ; Yubin ZHANG ; Ruoying SONG ; Jianqiang LI ; Feng LI ; Jiayi GUO
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(20):230-241
Primary osteoporosis (POP) is a metabolic bone disease characterized by reduced bone mass, degenerated bone microstructure, and increased bone fragility. Its pathogenesis involves the interaction of multiple factors such as genetics, aging, endocrine, and environment, which remain incompletely elucidated. Mitochondrial dysfunction can lead to insufficient adenosine triphosphate (ATP) production and abnormal accumulation of reactive oxygen species (ROS), activating oxidative stress and inflammation pathways, thereby inhibiting osteoblast differentiation and promoting osteoclast activation, exacerbating the negative bone metabolism balance in POP. Mitochondrial autophagy, as the core mechanism of mitochondrial quality control, selectively identifies and clears damaged mitochondria to effectively reduce ROS accumulation and energy metabolism disorders, thus maintaining the balance between osteoblast and osteoclast differentiation. It plays a critical role in maintaining bone homeostasis and the prevention and treatment of POP. The traditional Chinese medicine (TCM) theory of Qi transformation shares similarities with the functions of mitochondria in energy generation and substance conversion. The pathological state of Qi deficiency and stagnation may be associated with mitochondrial autophagy dysfunction, and the pathogenic characteristics of combined phlegm and stasis align with the metabolic waste accumulation induced by obstructed autophagy flow. This article explores the correlation of the theory of Qi deficiency and stagnation with mitochondrial autophagy and elucidates its potential role in the pathogenesis of POP. Additionally, considering the pathogenesis features of POP, which involve deficiency causing stagnation and a mixture of deficiency and excess, this article proposes a novel therapeutic approach: tonifying Qi to support the body and unblocking collaterals to resolve stagnation from the perspective of mitochondrial autophagy. This article aims to provide theoretical support and research insights for further exploration of TCM in the prevention and treatment of POP.
6.Comparative study on the mechanism and efficacy of Zexie tang traditional decoction and formula granules in reducing lipid accumulation
Yuanyuan GUO ; Lina MA ; Huqin LIN ; Changhui ZHENG ; Jiayi LI ; Zhijun LI ; Junling CAO
China Pharmacy 2025;36(10):1202-1208
OBJECTIVE To explore the effect and mechanism of Zexie tang (ZXT) on reducing lipid accumulation through network pharmacology, and compare the difference of traditional decoction versus formula granules. METHODS The active components and targets of ZXT were identified using TCMSP and SwissTargetPrediction databases. GeneCards, OMIM, DisGeNET and TTD databases were used to analyze the related targets of non-alcoholic fatty liver disease (NAFLD); protein-protein interaction network model was constructed by String database;“ ZXT-NAFLD target-pathway” network diagram was constructed by using CytoScape software; target enrichment analysis was performed by using Metascape platform. Fat accumulation model of human hepatocellular carcinoma HepG2 cells was established to observe the effects of traditional decoction and formula granules of ZXT on lipid accumulation of cells. RESULTS Alisol B, alisol C, 1-monolinolein and alisol B monoacetate were the key active components of ZXT in the treatment of NAFLD. The core targets included MDM2, MAPK1, PIK3CB, PRKCQ and MAPK14, etc. The core signaling pathways included endocrine resistance, insulin resistance and Th17 cell differentiation. Compared with model group, except for the Zexie formula granules group and Baizhu formula granules group, the absorbance values in all other administration groups were significantly decreased (P<0.01); the absorbance value of Baizhu traditional decoction group was significantly higher than that of ZXT traditional decoction group (P<0.01); the absorbance values of Zexie formula granule group and Baizhu formula granule group were significantly higher than that of ZXT formula granule group (P<0.01); the absorbance value of Zexie formula granule group was significantly higher than that of Zexie traditional decoction group (P<0.01); the absorbance value of Baizhu formula granule group was significantly higher than that of Baizhu traditional decoction group (P<0.01). CONCLUSIONS ZXT reduces lipid accumulation of human hepatocellular carcinoma cells through multiple components, multiple target and multiple pathways, and its traditional decoction and formula granules exhibit slightly different lipid-lowering effects.
7.Application of Medicinal and Edible Materials in Proactive Health and Technological Responses to Population Aging: A Review
Cuiying QIN ; Zuchang GUO ; Jie ZHANG ; Haiyan LI ; Jiayi WANG ; Qiuyan GUO
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(15):258-267
In the strategic context of "healthy China", the concept of "medicine and food homology", rooted in the culture of traditional Chinese medicine (TCM), has received unprecedented attention. In response to population aging in China, the health of the elderly has become the focus of public health attention, and proactive health is the key to healthy aging. From the perspective of the application of medicinal and edible materials in proactive health and technological responses to population aging for the first time, this paper firstly provided a systematic overview of medicinal and edible materials and the policies related to proactive health. Second, it summarized the situation of modern technology that accelerates the research and development of medicinal and edible products, as well as the current situation of various modern biotechnologies that reveal the mechanism of action of medicinal and edible materials. Third, it discussed the application scenarios of medicinal and edible materials in proactive health and technological responses to population aging, as well as the future research and development of medicinal and edible materials. By exploring in depth the unique value and importance of medicinal and edible materials, the paper lays a theoretical foundation for improving the health care capabilities of TCM and contributes new strategies derived from TCM to healthy aging.
8.Risk factors for pyogenic liver abscess comorbid with sepsis and construction of a nomogram prediction model
Jiayi GUO ; Haiquan KANG ; Mengjiao WANG ; Deyang XI ; Xuebing YAN ; Chunyang LI
Journal of Clinical Hepatology 2025;41(6):1143-1149
ObjectiveTo investigate the risk factors for pyogenic liver abscess (PLA) comorbid with sepsis by analyzing clinical features, and to construct a predictive model. MethodsA retrospective analysis was performed for 489 patients who were hospitalized and diagnosed with PLA in The Affiliated Hospital of Xuzhou Medical University from January 2019 to December 2023, and according to the presence or absence of sepsis, they were divided into sepsis group with 306 patients and non-sepsis group with 183 patients. Related data were collected, including general information, laboratory markers, and outcome measures. The patients were further divided into a training set of 342 patients and a validation set of 147 patients at a ratio of 7∶3, and the training set was used for screening of variables and construction of a predictive model, while the validation set was used to test the performance of the model. An LASSO regression analysis was used for the screening of variables, and a multivariate Logistic regression analysis was used to construct the predictive model and plot a nomogram. The calibration curve, the receiver operating characteristic (ROC) curve, and the decision curve analysis were used for the validation of the model, and internal validation was performed for assessment. The independent-samples t test was used for comparison of normally distributed continuous data between two groups, and the Mann-Whitney U test was used for comparison of non-normally distributed continuous data between two groups; the chi-square test was used for comparison of categorical variables between groups. ResultsThere were significant differences between the sepsis group and the non-sepsis group in pulse rate, mean arterial pressure, duration pf symptoms, comorbidity of liver cirrhosis or malignant tumor, leukocyte count, neutrophil count, lymphocyte count, platelet count (PLT), activated partial thromboplastin time, fibrinogen, C-reactive protein, aspartate aminotransferase, alanine aminotransferase, albumin, total bilirubin (TBil), creatinine, potassium, and prognostic nutritional index (PNI) (all P<0.05). In the training set, the LASSO regression analysis identified four predictive factors of pulse rate, PLT, TBil and PNI, and the multivariate Logistic regression analysis showed that pulse rate (odds ratio [OR]=1.033, 95% confidence interval [CI]: 1.006 — 1.061, P=0.018), PLT (OR=0.981, 95%CI: 0.975 — 0.987, P<0.001), TBil (OR=1.086, 95%CI: 1.053 — 1.125, P<0.001), and PNI (OR=0.935, 95%CI: 0.882 — 0.988, P=0.019) were independent influencing factors for the risk of sepsis in patients with PLA. The model constructed based on these factors showed a good predictive ability, with an area under the ROC curve of 0.948 (95%CI: 0.923 — 0.973) in the training set and 0.912 (95%CI: 0.848 — 0.976) in the validation set. The decision curve analysis showed that the model has a good net benefit within the range of 0.3 — 0.9 for threshold probability. ConclusionThe nomogram prediction model constructed based on pulse rate, PLT, TBil, and PNI has a certain clinical value and can well predict the risk of sepsis in patients with PLA.
9.Mechanism of Yishen Tongluo Formula regulating the TLR4/MyD88/NF-κB signaling pathway to ameliorate pyroptosis in diabetic nephropathy mice
Yifei ZHANG ; Zijing CAO ; Zeyu ZHANG ; Xuehui BAI ; Jingyi TANG ; Junyu XI ; Jiayi WANG ; Yiran XIE ; Yuqi WU ; Xi GUO ; Zhongjie LIU ; Weijing LIU
Journal of Beijing University of Traditional Chinese Medicine 2025;48(1):21-33
Objective:
To investigate the mechanism of Yishen Tongluo Formula in ameliorating renal pyroptosis in diabetic nephropathy mice by regulating the toll-like receptor 4 (TLR4)/myeloid differentiation factor 88 (MyD88)/nuclear factor-κB (NF-κB) signaling pathway.
Methods:
Sixty C57BL/6 male mice were randomly divided into control (10 mice) and intervention groups (50 mice) using random number table method. The diabetes nephropathy model was established by intraperitoneally injecting streptozotocin(50 mg/kg). After modeling, the intervention group was further divided into model, semaglutide (40 μg/kg), and high-, medium-, and low-dose Yishen Tongluo Formula groups (15.6, 7.8, and 3.9 g/kg, respectively) using random number table method. The high-, medium-, and low-dose Yishen Tongluo Formula groups were administered corresponding doses of medication by gavage, the semaglutide group received a subcutaneous injection of semaglutide injection, and the control group and model groups were administered distilled water by gavage for 12 consecutive weeks. Random blood glucose levels of mice in each group were monitored, and the 24-h urinary protein content was measured using biochemical method every 4 weeks; after treatment, the serum creatinine and urea nitrogen levels were measured using biochemical method. The weight of the kidneys was measured, and the renal index was calculated. Hematoxylin and eosin, periodic acid-Schiff, periodic Schiff-methenamine, and Masson staining were used to observe the pathological changes in renal tissue. An enzyme-linked immunosorbent assay was used to detect urinary β2-microglobulin (β2-MG), neutrophil gelatinase-associated lipocalin (NGAL), and kidney injury molecule-1 (KIM-1) levels. Western blotting and real-time fluorescence PCR were used to detect the relative protein and mRNA expression levels of nucleotide-binding domain leucine-rich repeat and pyrin domain-containing receptor 3 (NLRP3), Caspase-1, gasdermin D (GSDMD), interleukin-1β (IL-1β), and interleukin-18 (IL-18) in renal tissue. Immunohistochemistry was used to detect the proportion of protein staining area of the TLR4, MyD88, and NF-κB in renal tissue.
Results:
Compared with the control group, the random blood glucose, 24-h urinary protein, serum creatinine, urea nitrogen, and renal index of the model group increased, and the urine β2-MG, NGAL, and KIM-1 levels increased. The relative protein and mRNA expression levels of NLRP3, Caspase-1, GSDMD, IL-1β, and IL-18 in renal tissue increased, and the proportion of TLR4, MyD88, and NF-κB protein positive staining areas increased (P<0.05). Pathological changes such as glomerular hypertrophy were observed in the renal tissue of the model group. Compared with the model group, the Yishen Tongluo Formula high-dose group showed a decrease in random blood glucose after 12 weeks of treatment (P<0.05). The Yishen Tongluo Formula high- and medium-dose groups showed a decrease in 24-h urinary protein, creatinine, urea nitrogen, and renal index, as well as decreased β2-MG, NGAL, and KIM-1 levels. NLRP3, Caspase-1, GSDMD, IL-1 β, and IL-18 relative protein and mRNA expression levels were also reduced, and the proportion of TLR4, MyD88, and NF-κB protein positive staining areas was reduced (P<0.05). Pathological damage to renal tissue was ameliorated.
Conclusion
Yishen Tongluo Formula may exert protective renal effects by inhibiting renal pyroptosis and alleviating tubular interstitial injury in diabetic nephropathy mice by regulating the TLR4/MyD88/NF-κB signaling pathway.
10.Role of interferon regulatory factor 3 in renal fibrosis in a mouse model of renal ischemia-reperfusion injury
Shanlan WU ; Xiaoqing GUO ; Jiayi NIE ; Shuangquan CHEN ; Wengqiang YU ; Hua LIANG
Chinese Journal of Anesthesiology 2025;45(3):353-357
Objective:To evaluate the role of interferon regulatory factor 3 (IRF3) in renal fibrosis in a mouse model of renal ischemia-reperfusion injury.Methods:Twelve male C57BL/6J wild-type mice and 12 macrophage IRF3 conditional knockout C57BL/6J mice, aged 8-10 weeks, weighing 20-25 g, were divided into 2 groups ( n=6 each) using a random number table method: wild-type sham operation group (WT-Sham group) and wild-type renal ischemia-reperfusion injury group (WT-I/R group); IRF3 conditional knockout sham operation group (cKO-Sham group) and IRF3 conditional knockout I/R group (cKO-I/R group). The model of renal I/R injury was established by occluding bilateral renal pedicles for 45 min followed by reperfusion in anesthetized animals. The orbital blood samples and renal tissues were collected at 14 days of reperfusion for determination of the concentrations of blood urea nitrogen (BUN) and creatinine (Cr) in serum, expression of fibronectin, collagen-I, alpha-smooth muscle actin (α-SMA) (by immunofluorescence), F4/80-α-SMA double positive cell count, and mRNA expression of interleukin-6 (IL-6), interleukin-1β (IL-1β), tumor necrosis factor-α (TNF-α) and transforming growth factor-β1 (TGF-β1) in renal tissues (by real-time polymerase chain reaction) and for observation of pathological changes which were scored. The area of renal fibrosis was measured. Results:For two types of mice, compared with group Sham, the levels of serum BUN and Cr, area of renal fibrosis and renal injury score were significantly increased, the expression of fibronectin, COL-Ⅰ and α-SMA protein and IL-6, IL-1β, TNF-α and TGF-β1 mRNA was up-regulated, and the F4/80-α-SMA dual positive cell count was increased in group WT-I/R ( P<0.05). Compared with group WT-I/R, the concentrations of BUN and Cr in serum, area of renal fibrosis and renal injury score were significantly decreased, the expression of fibronectin, COL-Ⅰ and α-SMA protein and IL-6, IL-1β, TNF-α and TGF-β1 mRNA was down-regulated, and the F4/80-α-SMA dual positive cell count was decreased in cKO-I/R group ( P<0.05). Conclusions:IRF3 is involved in the process of renal fibrosis in a mouse model of renal ischemia-reperfusion injury, and the mechanism may be associated with the promotion of inflammatory responses and the transformation of macrophages into myofibroblasts.


Result Analysis
Print
Save
E-mail