1.Discussion on Scientific Connotation of Vital Qi Strengthening for Detoxification Therapy in Treatment of Community-acquired Pneumonia Based on Theory of "Vital Qi Deficiency and Toxic Stasis"
Hanxiao WANG ; Zheyu LUAN ; Haotian XU ; Xin PENG ; Ziming DANG ; Kun YANG ; Qianqian WANG ; Jihong FENG
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(4):226-234
Community-acquired pneumonia (CAP) refers to an infectious inflammation of the lung parenchyma (including the alveolar wall,that is,the broad pulmonary interstitium) acquired outside the hospital. Its common pathogens include streptococcus pneumoniae,respiratory viruses, mycoplasma pneumoniae, and so on. The related factors for the occurrence and development of CAP include patient characteristics (immune function,mucus production and clearance function,coagulation function,physical condition, and comorbidity) and pathogen characteristics (susceptibility,virulence,and antibiotic resistance). The pathogenesis of CAP lies in immune deficiency,pathogen invasion,inflammatory response disorder,mucus production and clearance disorder, coagulation disorder, and so on. The pathogenesis of CAP in traditional Chinese medicine can be described as "vital Qi deficiency and toxic stasis". Vital Qi deficiency (lack of immunity) is the potential pathogenesis of the disease and easy to be invaded by external pathogens (respiratory pathogens). Toxic stasis (inflammatory disorder,mucus production and clearance disorder,and coagulation dysfunction) is the key pathogenic factor. Vital Qi deficiency and toxic stasis are intermingled in a state of deficiency and excess,which suggests that the treatment of CAP lies in strengthening vital Qi and eliminating pathogenic factors. This involves strengthening vital Qi in the whole process to consolidate body resistance and nourish promordial Qi. It also involves clearing heat,eliminating phlegm,removing dampness,and dispelling stasis to dispel pathogenic toxins based on the syndrome differentiation. Its action mechanism is to regulate immune and inflammatory responses,resist pathogens,and improve mucus production and clearance, as well as coagulation disorders. Starting from the key pathogenesis of CAP,"vital Qi deficiency and toxic stasis", this paper discussed the pathogenesis of CAP and summarized the action mechanism of vital Qi strengthening for detoxification in its treatment. It is intended to complement the theoretical system by identifying "vital Qi deficiency and toxic stasis" as the key pathogenesis underlying CAP and the scientific connotation of treating CAP with vital Qi strengthening for detoxification,thereby providing insights for its clinical application.
2.Effect and Mechanisms of Luteolin on Gout
Jinlai CHENG ; Xiaoyu ZHANG ; Yuyan XU ; Huajing WANG ; Yuqing TAN ; Feng SUI ; Miyi YANG
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(1):140-149
ObjectiveTo integrate network pharmacology prediction with multi-level experimental verification methods, and to explore in depth the therapeutic efficacy and potential mechanism of luteolin in treating gout. MethodsDatabases were used to obtain potential pharmacodynamic targets of luteolin. Protein-protein interaction (PPI) network construction and network pharmacology analysis techniques were used to screen key core targets of luteolin in gout treatment. Further biological function enrichment analysis and signaling pathway analysis were performed on these targets. Molecular docking simulation was used to calculate the binding energy between luteolin and potential core targets, clarifying the strength of their interactions. In the in vivo experiment for hyperuricemia, 48 mice were randomly divided into a blank group, a model group, an allopurinol group (5 mg·kg-1), and low-dose (10 mg·kg-1), medium-dose (30 mg·kg-1), and high-dose (90 mg·kg-1) luteolin groups. For the first three days, the blank and model groups were gavaged with an equal volume of normal saline, while the allopurinol group and luteolin groups were gavaged with corresponding drugs. From day 4 onwards, modeling was performed by intraperitoneal injection at 12:00 daily (normal saline for the blank group, and oxonic acid potassium-hypoxanthine mixture for other groups, with 300 mg·kg-1 for each group). Gavage intervention was administered at 18:00 daily (normal saline for the blank/model groups, and corresponding drugs for the treatment groups) until day 7. After sampling, levels of serum uric acid (UA), alanine aminotransferase (ALT), and aspartate aminotransferase (AST) were measured. Levels of xanthine oxidase (XO) in the liver and kidney, ATP-binding cassette transporter G2 (ABCG2) and malondialdehyde (MDA) in the kidney, and superoxide dismutase (SOD) in the liver were determined. Renal HE staining was also performed. In the pharmacodynamic study of gouty arthritis, 36 rats were randomly divided into a blank group, a model group, a colchicine group (0.315 mg·kg-1), and low-dose (7 mg·kg-1), medium-dose (21 mg·kg-1), and high-dose (63 mg·kg-1) luteolin groups. The model was established by vertically injecting 100 µL of 25 g·L-1 monosodium urate suspension into the posterior lateral aspect of the right ankle joint (the blank group was injected with an equal volume of normal saline), with repeated injections every two days for reinforcement. From day 2 after modeling, daily gavage administration was performed (normal saline for the blank/model groups, and corresponding drugs for the treatment groups) for a total of 16 days. During the experiment, ankle swelling and pain threshold were measured regularly. After sampling, levels of serum tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), and interleukin-1β (IL-1β) were determined. Ankle joints were subjected to HE, Masson, and safranin O-fast green staining, and HE staining was also performed on ankle synovial tissue and various organs. Western blot was used to determine the expression levels of key proteins in gout-related signaling pathways. ResultsNetwork pharmacology analysis predicted that luteolin may regulate over 20 core targets, such as XO, ABCG2, nuclear factor erythroid 2-related factor 2 (Nrf2), and SOD, through acting on signaling pathways including NF-κB, phosphoinositide 3-kinase/protein kinase B (PI3K/Akt), and ABC transporters, thereby affecting uric acid metabolism and inflammatory responses. In the hyperuricemia model, compared with the blank group, the model group showed significantly increased serum UA level, liver and kidney XO activity, renal ABCG2 expression, and liver SOD activity (P<0.01). Compared with the model group, the high-dose luteolin group significantly reduced serum UA level (P<0.01), inhibited liver and kidney XO activity (P<0.01), and significantly increased renal ABCG2 expression and liver SOD activity (P<0.01), effectively alleviating renal oxidative stress damage and improving renal histopathological status. In the gouty arthritis model, compared with the blank group, the model group showed significant ankle swelling, decreased pain threshold, and significantly increased levels of IL-6, IL-1β, and TNF-α in serum and synovial tissue (P<0.01). The high-dose luteolin group significantly reduced ankle swelling, prolonged hot plate pain threshold, effectively decreased the levels of the above inflammatory factors in serum and synovial tissue (P<0.01), and significantly improved ankle pathological damage, showing good analgesic and anti-inflammatory effects. Western blot results further confirmed that luteolin significantly upregulated Nrf2 protein expression and downregulated XO and nucleotide-binding oligomerization domain (NOD)-like receptor protein 3 (NLRP3) expression in animals. ConclusionLuteolin can improve symptoms of hyperuricemia and gouty arthritis, and its potential mechanism may be related to inhibiting XO activity, increasing ABCG2 and SOD levels, and regulating Nrf2-mediated oxidative stress-related pathways.
3.Association of outdoor activity time and sleep duration with screening myopia in primary school students
LIU Xiaoling, LI Tingting, CAO Caiyun, YANG Feng, TAO Shuman, WU Xiaoyan, XU Shaojun, TAO Fangbiao
Chinese Journal of School Health 2026;47(2):279-282
Objective:
To explore the association of outdoor activity time and sleep duration with screening myopia in primary school students, so as to provide strategies for myopia prevention.
Methods:
Through a convenience sampling method, a survey was conducted among 4 248 primary school students aged 7-13 years from three primary schools in Xihu District, Nanchang City, Jiangxi Province from May to July, 2023. The average daily outdoor activity time and sleep duration on both weekdays and weekends were investigated in primary school students by using a self designed questionnaire. Uncorrected visual acuity tests and non cycloplegic autorefraction were measured by professional optometrists. Inter group comparisons were conducted using the Chi square test. Logistic regression model was used to analyze the association of outdoor activity time and sleep duration with screening myopia.
Results:
The detection rate of screening myopia in primary school students was 33.6%, with the rate in boys (32.0%) lower than that in girls (35.3%), and the difference was statistically significant ( χ 2=5.11, P =0.02). The analysis results of Logistic regression showed that after adjusting for factors such as gender, grade and parental education level, both average daily outdoor activity time <2 h on both weekdays and weekends ( OR =1.27, 95% CI =1.11-1.46) and sleep duration <10 h ( OR =1.17, 95% CI =1.01- 1.35 ), as well as their combined effect ( OR =1.57, 95% CI =1.25-1.98), were associated with an increased risk of screening myopia in primary school students(all P <0.05). Subgroup analysis results indicated that compared to boys ( OR =1.46, 95% CI = 1.07 -1.99), girls( OR =1.73, 95% CI =1.22-2.44) with insufficient outdoor activity time and sleep duration had a higher risk of screening myopia(both P <0.05).
Conclusions
There is a negative correlation of outdoor activity time and sleep duration with screening myopia in primary school students. Outdoor activity time and extending sleep duration should be increased to reduce the risk of myopia in primary school students.
4.Herbal Textual Research on Bambusae Succus in Famous Classical Formulas
Yu SHI ; Feng ZHOU ; Yihan WANG ; Yanmeng LIU ; Ming YANG ; Zhiping CHEN ; Jiangshan ZHANG ; Conglong XU ; Zhilai ZHAN
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(9):231-239
This article systematically reviews and examines the historical evolution of Bambusae Succus as a medicinal material, covering aspects such as nomenclature, origin, geographical distribution, harvesting and processing methods, quality assessment, therapeutic effects and indications, by consulting ancient herbal texts, medical compendia, and modern literature. The aim is to provide a reference for the development and utilization of famous classical formulas containing this herb. Research indicated that Bambusae Succus was first documented in the Shennong Bencaojing during the Han dynasty, with Zhuli being the standard name used throughout history, alongside aliases like Zhuzhi, Zhuyou and Huoquan. Historically, the primary source of Bambusae Succus has been Phyllostachys nigra var. henonis(Danzhu), although other species such as Pleioblastus amarus and Bambusa emeiensis have also been used medicinally. Ancient records predominantly noted its origin in Yizhou(present-day Chengdu and surrounding areas in Sichuan) and the Wuling region(between present-day Hunan, Guangdong, Guangxi and Jiangxi provinces), while contemporary sources are mainly from regions south of the Yangtze River and southwestern China. Traditionally, Bambusae Succus was harvested from bamboo that had grown for exactly one year, today, it can be collected year-round without strict age requirements. Ancient preparation methods included direct fire roasting or dry distillation, whereas modern industrial production employs dry distillation, reflux extraction, and percolation. In terms of quality evaluation, ancient texts considered a sweet taste to be superior, while today, clarity and transparency are prioritized. Historically, Bambusae Succus was characterized as sweet and cold nature, targeting the lung and stomach meridians, with uses evolving from clearing heat and resolving phlegm to nourishing Yin, moistening dryness, and relaxing tendons and unblocking meridians. Modern descriptions classify it as sweet, bitter, and cold in nature, affecting the heart, liver, and lung meridians, with functions including clearing heat, resolving phlegm, and facilitating orifices. It is indicated for conditions such as stroke with phlegm confusion, lung heat with phlegm congestion, convulsions, epilepsy, excessive phlegm in febrile diseases, high fever with thirst, irritability during pregnancy, and tetanus, with more clearly defined applications. Based on the results of the research, it is recommended that when developing and utilizing famous classical formulas containing Bambusae Succus, the one-year-old Phyllostachys nigra var. Henonis, which has been highly praised throughout history, should be selected as the source material. Industrial production should adopt the dry distillation method. Furthermore, in-depth research should be conducted on the modern technological characterization of the traditional quality control indicator of sweet taste, and reasonable modern quality control standards should be established.
5.Early Postoperative Safety of Total Hip Arthroplasty in Systemic Lupus Erythematosus Patients
Xingdong YANG ; Muyang YU ; Yiming XU ; Wei ZHU ; Mingwei HU ; Xisheng WENG ; Bin FENG
Medical Journal of Peking Union Medical College Hospital 2025;16(1):42-49
To analyze the occurrence of early complications after total hip arthroplasty (THA) in patients with systemic lupus erythematosus (SLE). The data of patients who underwent THA at Peking Union Medical College Hospital from June 2012 to April 2024 were retrospectively and consecutively collected. The patients were categorized into SLE group and control group based on the presence or absence of SLE. Using propensity score matching, we matched patients in the two groups at a 1∶1 ratio according to gender, age, and surgical side. Subsequently, we compared the clinical characteristics, incidence of major complications within 30 days postoperatively, and allogeneic blood transfusion rates between the two groups. A total of 270 patients in the SLE group who met the inclusion and exclusion criteria were selected. Within 30 days postoperatively, 18 cases (6.67%) experienced major complications, including 2 cases (0.74%) of upper respiratory tract infection, 2 cases (0.74%) of pulmonary infection, 3 cases (1.11%) of urinary tract infection, 2 cases (0.74%) of other systemic infection, 5 cases (1.85%) of poor wound healing, 1 case (0.37%) of wound infection, 1 case (0.37%) of gastrointestinal complications, 1 cases (0.37%) of shock, and 1 case (0.37%) of SLE flare-up. The allogeneic blood transfusion rate was 22.59% (61/270). After propensity score matching, 163 cases from SLE and control groups were included for analysis. (1) Regarding medical complications, compared with control group, SLE group showed significant differences in osteoporosis, respiratory system disorders, gastrointestinal diseases, urinary system disorders, hematologic abnormalities, and secondary or concomitant rheumatic diseases (all The incidence of major complications within 30 days following THA in patients with SLE was significantly higher than that in non-SLE patients, while the rate of allogeneic blood transfusion remained comparable. To ensure the safety of THA surgery for patients with SLE, it is important to optimize the patient's condition and achieve stabilization prior to surgery. Additionally, strict perioperative management must be forced.
6.Thoughts of Syndrome Differentiation and Treatment and Effect Mechanism of Haoqin Qingdantang in Treating Viral Pneumonia Based on Theory of Treating Different Diseases with Same Therapy
Xin PENG ; Haotian XU ; Lei LIANG ; Zheyu LUAN ; Hanxiao WANG ; Yihao ZHANG ; Kun YANG ; Jihong FENG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(8):209-217
The principle of treating different diseases with the same therapy is the essence of syndrome differentiation and treatment in traditional Chinese medicine (TCM). It means that when the same pathogenic changes or the same symptoms appear in the development of different diseases, the same principles or methods can be used for treatment. Due to the complexity and high variability of viral pathogenicity, the precise and effective treatment of different types of viral pneumonia (VP) has always been a research focus and difficulty in modern medicine. VP belongs to the category of external-contraction febrile disease, warm disease, and epidemic in TCM. Haoqin Qingdantang (HQQDD) is a representative formula for clearing heat and dispelling dampness in warm diseases, and its intervention in VP caused by various viral infections has significant effects. This study, guided by the theory of treating different diseases with the same therapy, links the related studies on using HQQDD to treat different types of VP and finds that influenza virus pneumonia (IVP), severe acute respiratory syndrome (SARS), and COVID-19 all have a common pathogenic mechanism of dampness-heat at different stages of respective diseases. When these diseases are dominated by damp-heat factors, the use of HQQDD yields remarkable therapeutic effects. Modern pharmacological studies have confirmed that HQQDD can inhibit virus replication, reduce fever reactions, inhibit the expression of inflammatory mediators, and regulate immune balance. Moreover, the sovereign medicine in this formula has excellent antiviral activity, and the formula reflects rich scientific connotations of treating VP. According to the theory of treating different diseases with the same therapy and based on the effective treatment practice and modern pharmacological research of HQQDD for different types of VP, this paper mines the underlying TCM theory of treatment with the same therapy, explores the syndrome differentiation and treatment strategy and effect mechanism of this formula for different types of VP, and analyzes the treatment mechanism and characteristics, with the aim of providing evidence and reference for the clinical application and modern research of HQQDD.
7.Trend of periodontal disease burden among Chinese women of reproductive age from 1990 to 2021
WEN Ping ; ZHANG Feng ; XU Weijie ; YANG Xiuqiao ; LIN Hong ; LI Xiaotian
Journal of Prevention and Treatment for Stomatological Diseases 2025;33(3):221-229
Objective:
To analyze the status and trends of the disease burden of periodontal disease among women of reproductive age (15-49 years) in China from 1990 to 2021, and to provide a reference for the development of periodontal disease prevention and control strategies for women of reproductive age.
Methods:
Using the global burden of disease (GBD) data from 1990 to 2021, this study investigated the periodontal disease burden among women of reproductive age, including prevalence, incidence, disability-adjusted life years (DALYs), DALY rates, and their corresponding standardized indicators. Joinpoint 5.2.0.0 software was used for time trend analysis of DALYs, age-specific DALY rates, and annual average percentage change (AAPC) values. A log-linear regression model was used to test trends for DALYs and DALY rates.
Results:
Compared with 1990, the prevalence and incidence of periodontal disease among Chinese women in 2021 increased by 45.67% (per 100,000 people) and 29.29% (per 100,000 people), respectively. The distribution of periodontal disease among women (15-49 years) showed a continuous and rapid upward trend, with the growth rate increasing rapidly with age. The number of cases increased the fastest in the 45-49 age group, and the prevalence increased the fastest in the 35-44 age group. The incidence of periodontal disease continued to rise with age, with the fastest increase in the 35-44 age group among women of reproductive age. The Joinpoint regression model results showed that periodontal disease led to an expanding trend in the disease burden among women of reproductive age in China, with an AAPC of DALYs = 1.20% and an AAPC of DALY rate = 1.25% (P<0.001).
Conclusion
The periodontal disease burden among Chinese women aged 15-49 years showed a gradually increasing trend from 1990 to 2021.
8.Early combination of Ranibizumab and Dexamethasone intravitreal implant in the treatment of macular edema secondary to retinal vein occlusion
Chaofan WANG ; Shuliang DING ; Junxing YANG ; Zijing FENG ; Dengfeng XU ; Jianliang LIU
International Eye Science 2025;25(4):644-649
AIM:To compare the efficacy and safety of early combination therapy with ranibizumab and dexamethasone intravitreal implants versus ranibizumab monotherapy for the treatment of macular edema secondary to retinal vein occlusion(RVO-ME).METHODS: A retrospective cohort study was conducted on a total of 62 cases(64 eyes)of patients who were first diagnosed with RVO-ME at the Eye Centre of the Affiliated Hospital of Shandong Second Medical University between February 2022 and February 2023. The subjects were divided into two groups according to the different treatment regimens: 32 cases(34 eyes)in the monotherapy group received only ranibizumab [3+pro re nata(PRN)regimen], and 30 cases(30 eyes)in the combination therapy group were injected with ranibizumab once first, followed by dexamethasone intravitreal implant 3 wk later(1+DEX regimen). The best corrected visual acuity(BCVA), central retina thickness(CRT), foveal avascular zone(FAZ)area, macular vascular density(MVD)at the level of the deep vascular complex(DVC)of the retina, the incidence of ocular adverse effects, the number of drug injections, and the total cost between the two groups were compared before and after treatment.RESULTS: At 3 wk, 3 and 6 mo, and at the final follow-up of the two groups of patients, the improvement in BCVA, CRT, and MVD in the DVC layer was significantly better than that before treatment(all P<0.05); there were differences in the comparisons of BCVA and CRT between the two groups at 6 mo and the final follow-up(all P<0.05), and the increase in the number of letters of BCVA was the most pronounced in the combination therapy group at 6 mo of treatment. Statistical significant difference was observed in the comparison of MVD in the DVC layer between the two groups at 3 and 6 mo after treatment and at the final follow-up(all P<0.05). However, no significant change in FAZ area was evident before and after treatment in both groups(P>0.05). The combination therapy group exhibited a reduced number of injections and total cost in comparison to the monotherapy group. The combination therapy group exhibited a slightly higher incidence of high intraocular pressure and cataract progression compared to the monotherapy group, with no statistical significant difference(all P>0.05). Furthermore, no serious adverse events were observed in either group following treatment.CONCLUSION:Compared with ranibizumab alone, ranibizumab combined with dexamethasone intravitreal implant significantly improved vision, reduced macular edema, and lowered the frequency of injections and total treatment cost in patients with RVO-ME. CRT and MVD in the DVC layer are reliable prognostic indicators for patients with RVO-ME.
9.Role of Traditional Chinese Medicine in Regulating Immune Inflammation and Microvascular Damage in Preventing Recurrence of Pneumonia During Recovery Based on Combination of Pathogenic Factors
Xin PENG ; Haotian XU ; Lei LIANG ; Zheyu LUAN ; Hanxiao WANG ; Kun YANG ; Jihong FENG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(9):249-258
Pneumonia is an infectious disease with high morbidity and mortality worldwide, and its damage to the body is not limited to the acute phase. The theory of combination of pathogenic factors emphasizes that the combination of new pathogens and residual pathogens in the body leads to the occurrence of diseases, which generalizes the causes of recurrence during pneumonia recovery. During the recovery stage of pneumonia, pathological changes such as disturbance of immune homeostasis, persistent low-grade inflammation, and microvascular damage continue to affect the body function, impair the health and quality of life of patients, and increase the risk of secondary infection. According to the theory of traditional Chinese medicine (TCM), pneumonia is caused by deficiency, and Qi deficiency and blood stasis is the core pathogenesis in the recovery stage. At this time, the body is not full of healthy qi and still has residual pathogens, and thus it is susceptible to external pathogenic factors that lead to disease recurrence. As an important part of the TCM philosophy of treating disease before its onset, prevention of recurrence after recovery emphasizes the need for aftercare in the recovery stage to prevent disease recurrence. Based on the pathogenesis theory of combination of pathogenic factors and the pathogenesis of Qi deficiency and blood stasis, this paper discusses the effect and connotation of TCM in regulating immune inflammation and microvascular damage in preventing recurrence of pneumonia during the recovery stage, aiming to develop new ideas for effective prevention and treatment of pneumonia at this stage.
10.Inhibition of HDAC3 Promotes Psoriasis Development in Mice Through Regulating Th17
Fan XU ; Xin-Rui ZHANG ; Yang-Chen XIA ; Wen-Ting LI ; Hao CHEN ; An-Qi QIN ; Ai-Hong ZHANG ; Yi-Ran ZHU ; Feng TIAN ; Quan-Hui ZHENG
Progress in Biochemistry and Biophysics 2025;52(4):1008-1017
ObjectiveTo investigate the influence of histone deacetylase 3 (HDAC3) on the occurrence, development of psoriasis-like inflammation in mice, and the relative immune mechanisms. MethodsHealthy C57BL/6 mice aged 6-8 weeks were selected and randomly divided into 3 groups: control group (Control), psoriasis model group (IMQ), and HDAC3 inhibitor RGFP966-treated psoriasis model group (IMQ+RGFP966). One day prior to the experiment, the back hair of the mice was shaved. After a one-day stabilization period, the mice in Control group was treated with an equal amount of vaseline, while the mice in IMQ group was treated with imiquimod (62.5 mg/d) applied topically on the back to establish a psoriasis-like inflammation model. The mice in IMQ+RGFP966 group received intervention with a high dose of the HDAC3-selective inhibitor RGFP966 (30 mg/kg) based on the psoriasis-like model. All groups were treated continuously for 5 d, during which psoriasis-like inflammation symptoms (scaling, erythema, skin thickness), body weight, and mental status were observed and recorded, with photographs taken for documentation. After euthanasia, hematoxylin-eosin (HE) staining was used to assess the effect of RGFP966 on the skin tissue structure of the mice, and skin thickness was measured. The mRNA and protein expression levels of HDAC3 in skin tissues were detected using reverse transcription real-time quantitative polymerase chain reaction (RT-qPCR) and Western blot (WB), respectively. Flow cytometry was employed to analyze neutrophils in peripheral blood and lymph nodes, CD4+ T lymphocytes, CD8+ T lymphocytes in peripheral blood, and IL-17A secretion by peripheral blood CD4+ T lymphocytes. Additionally, spleen CD4+ T lymphocyte expression of HDAC3, CCR6, CCR8, and IL-17A secretion levels were analyzed. Immunohistochemistry was used to detect the localization and expression levels of HDAC3, IL-17A, and IL-10 in skin tissues. ResultsCompared with the Control group, the IMQ group exhibited significant psoriasis-like inflammation, characterized by erythema, scaling, and skin wrinkling. Compared with the IMQ group, RGFP966 exacerbated psoriasis-like inflammatory symptoms, leading to increased hyperkeratosis. The psoriasis area and severity index (PASI) skin symptom scores were higher in the IMQ group than those in the Control group, and the scores were further elevated in the IMQ+RGFP966 group compared to the IMQ group. Skin thickness measurements showed a trend of IMQ+RGFP966>IMQ>Control. The numbers of neutrophils in the blood and lymph nodes increased sequentially in the Control, IMQ, and IMQ+RGFP966 groups, with a similar trend observed for CD4+ and CD8+ T lymphocytes in the blood. In skin tissues, compared with the Control group, the mRNA and protein levels of HDAC3 decreased in the IMQ group, but RGFP966 did not further reduce these expressions. HDAC3 was primarily located in the nucleus. Compared with the Control group, the nuclear HDAC3 content decreased in the skin tissues of the IMQ group, and RGFP966 further reduced nuclear HDAC3. Compared with the Control and IMQ groups, RGFP966 treatment decreased HDAC3 expression in splenic CD4+ and CD8+ T cells. RGFP966 treatment increased the expression of CCR6 and CCR8 in splenic CD4+ T cells and enhanced IL-17A secretion by peripheral blood and splenic CD4+ T lymphocytes. Additionally, compared with the IMQ group, RGFP966 reduced IL-10 protein levels and upregulated IL-17A expression in skin tissues. ConclusionRGFP966 exacerbates psoriatic-like inflammatory responses by inhibiting HDAC3, increasing the secretion of the cytokine IL-17A, and upregulating the expression of chemokines CCR8 and CCR6.


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