Objective: To investigate the protective effects of Gouqizi (Lycii Fructus, GQZ)-Danshen (Salviae Miltiorrhizae Radix et Rhizoma, DS) against hydrogen peroxide (H2O2)-induced oxidative injury in 661W retinal photoreceptor cells and to explore whether these effects involve angiopoietin-like 4 (ANGPTL4). Methods: Liquid chromatography-mass spectrometry (LC-MS) was used to identify the major components of GQZ-DS aqueous extract. An H2O2-induced oxidative injury model was established in 661W cells. Working concentrations of H2O2 and GQZ-DS were determined using the cell counting kit-8 (CCK-8) assay. Cells were subjected to GQZ-DS, ANGPTL4 knockdown, or ANGPTL4 overexpression as indicated. Flow cytometry was used to analyze cell cycle distribution, apoptotic rate, and intracellular reactive oxygen species (ROS). Colorimetric determination of malondialdehyde (MDA) content and superoxide dismutase (SOD) activity using the thiobarbituric acid (TBA) method was performed. The protein expression level of ANGPTL4 was assessed by immunofluorescence. Reverse transcription-quantitative polymerase chain reaction (RT-qPCR) was performed to quantify the mRNA level of ANGPTL4. Western blot was used to detect the protein levels of ANGPTL4 and cleaved caspase-3. Results: LC-MS identified five major constituents in the GQZ-DS aqueous extract: 2-O-β-D-glucopyranosyl-L-ascorbic acid, rutin, D-galactose, salvianolic acid A, and tanshinone IIA. The CCK-8 method selected 300 μmol/L H2O2 as the oxidative stress condition for experiments, and 0.05 and 0.1 g/mL were selected as the low and high doses of GQZ-DS, respectively, for subsequent experiments. The intervention with H2O2 resulted in reduced cell viability, elevated ROS and MDA levels, decreased SOD activity, increased apoptotic rate, upregulated cleaved caspase-3 expression, and G0/G1 phase cell cycle arrest of 661W cells. Both low and high doses of GQZ-DS alleviated these alterations, with high dose exhibiting stronger protective effects (P < 0.05 or P < 0.01). GQZ-DS also downregulated ANGPTL4 expression at both the mRNA and protein levels. Following plasmid transfection of cells, the study further revealed that ANGPTL4 knockdown mitigated oxidative stress and apoptosis-related injury, whereas ANGPTL4 overexpression exacerbated these pathological changes. Moreover, GQZ-DS partially reversed the degree of cellular oxidative damage induced by ANGPTL4 overexpression. Conclusion GQZ-DS can alleviate the H2O2-induced oxidative injury of 661W retinal photoreceptor cells, and the effects are related to the down-regulation of ANGPTL4 expression.

Dry eye （DE） is a prevalent multifactorial disease of the ocular surface， clinically characterized by tear film homeostasis imbalance accompanied by related ocular surface symptoms. Specifically， the tear film is a thin liquid layer of tears covering the cornea and conjunctiva through blinking， while tear film homeostasis serves as the foundation for maintaining normal ocular surface structure and function. Insufficient tear secretion and excessive tear film evaporation lead to tear hyperosmolarity and the production of inflammatory mediators， disrupting tear film homeostasis and subsequently forming DE. Additionally， cascade reactions are triggered， resulting in a "vicious cycle of DE" that exacerbates the disease severity and prolongs its duration. Therefore， for DE treatment， it is crucial to restore tear film homeostasis and terminate this vicious cycle. Traditional Chinese medicine （TCM）， which differentiates and treats DE based on systemic conditions， often achieves favorable therapeutic outcomes， offering additional treatment options for DE. Studies have demonstrated that TCM can alleviate DE by regulating tear film homeostasis and terminating the vicious cycle. This review systematically summarizes recent basic experimental research in China and abroad on TCM in alleviating DE by regulating tear film homeostasis， aiming to provide a theoretical basis for clinical treatment and an insight for research design.

ObjectiveTo establish a mouse model of particulate matter 2.5 （PM_2.5）-induced dry eye and investigate whether Chufeng Yisuntang can ameliorate the PM_2.5-induced ocular surface damage by regulating the reactive oxygen species （ROS）/p38 mitogen-activated protein kinase （p38 MAPK） signaling pathway. MethodsSixty 8-week-old male C57BL/6J mice were used. Ten were randomly selected as the control group. The remaining 50 mice received topical instillation of 1 drop （0.1 mL） of 5 g·L^-1 PM_2.5 suspension in both eyes， four times daily. Successfully modeled mice were randomized into four groups （n=10）： Model， p38 MAPK inhibitor， Chufeng Yisuntang， and combination （Chufeng Yisuntang at 7.3 g·kg^-1 + p38 MAPK inhibitor SB203580 at 5 mg·kg^-1）. Chufeng Yisuntang was administered via gavage， and the inhibitor group via intraperitoneal injection. The control and model groups received equal volumes of distilled water by gavage. All treatments lasted for 4 weeks. General conditions were dynamically observed. Tear secretion， tear film break-up time， and corneal fluorescein staining were assessed. After intervention for 4 weeks， hematoxylin and eosin （HE） staining was used to examine the histopathological changes. Enzyme-linked immunosorbent assay （ELISA） was adopted to measure serum levels of ROS， malondialdehyde （MDA）， superoxide dismutase （SOD） 1， and SOD2. Western blot and Real-time PCR were employed to determine the protein and gene levels， respectively， of p38 MAPK， B-cell lymphoma-2 （Bcl-2）， Bcl-2-associated X protein （Bax）， and cysteinyl aspartate-specific proteinase-3 （Caspase-3） in the corneal tissue. ResultsCompared with the control group， the model group exhibited reduced tear secretion volume and tear film breakup time， along with increased corneal fluorescein staining scores （P<0.01）. Compared with the model group， the Chufeng Yisuntang group， p38 MAPK inhibitor group， and combination group demonstrated increased tear secretion volume and tear film breakup time， along with decreased corneal fluorescein staining scores （P<0.01）. HE staining revealed that compared with the control group， the model group exhibited marked increases in corneal epithelial cell layers and epithelial thickness， along with reduced meibomian gland acini and intensely stained， densely packed nuclei around the acini. Compared with the model group， the Chufeng Yisuntang group， p38 MAPK inhibitor group， and combination group showed intact corneal structure， improved cell morphology， and reduced damage severity. ELISA revealed elevated ROS and MDA levels （P<0.01） and decreased SOD1 and SOD2 levels （P<0.01） in the model group compared with the control group. Compared with the model group， Chufeng Yisuntang， p38 MAPK inhibitor， and the combination lowered ROS and MDA levels （P<0.01）， while raising SOD1 and SOD2 levels （P<0.05， P<0.01）. Western blot revealed that compared with the control group， the model group exhibited increased protein levels of p38 MAPK， Bax， and Caspase-3 （P<0.01） and reduced protein level of Bcl-2 （P<0.01）. Compared with the model group， Chufeng Yisuntang， p38 MAPK inhibitor， and the combination down-regulated the protein levels of p38 MAPK， Bax， and Caspase-3 （P<0.01）， while up-regulating the protein level of Bcl-2 （P<0.01）. Compared with the Chufeng Yisuntang group， the combination group exhibited decreased protein levels of p38 MAPK， Bax， and Caspase-3 （P<0.01） and increased protein level of Bcl-2 （P<0.01）. Real-time PCR revealed that compared with the control group， the model group exhibited upregulated mRNA levels of p38 MAPK， Bax， and Caspase-3 （P<0.01）， and downregulated mRNA level of Bcl-2 （P<0.01）. Compared with the model group， Chufeng Yisuntang， p38 MAPK inhibitor， and the combination down-regulated the mRNA levels of p38 MAPK， Bax， and Caspase-3 （P<0.01）， while up-regulating the mRNA level of Bcl-2 （P<0.05， P<0.01）. Compared with the Chufeng Yisuntang group， the combination group exhibited decreased mRNA levels of p38 MAPK， Bax， and Caspase-3 expression （P<0.05， P<0.01） and increased mRNA level of Bcl-2 （P<0.01）. ConclusionChufeng Yisuntang may partially protect against PM_2.5-induced corneal injury by inhibiting the ROS/p38 MAPK pathway， enhancing antioxidant defense， and reducing epithelial apoptosis.

ObjectiveTo investigate the mechanisms of Runmu Dihuang decoction （RMDHD） in treating perimenopausal dry eye with liver-kidney Yin deficiency syndrome based on the silent information regulator 3 （SIRT3）/hypoxia-inducible factor-1α （HIF-1α）/nuclear factor-κB （NF-κB） signaling pathway. MethodsSixty female Sprague-Dawley rats were randomly divided into six groups （n=10 per group）： Sham operation group， model group， sodium hyaluronate eye drop group， and low-， medium-， and high-dose RMDHD groups （5.625， 11.25， 22.50 g·kg^-1）. Except for the sham operation group， all rats underwent bilateral ovariectomy and were administered 0.1% benzalkonium chloride eye drops combined with long-term chronic irritation to establish a perimenopausal dry eye model with liver-kidney Yin deficiency syndrome. Drug administration began in the 11th week after modeling and continued for 21 days. General conditions， screen-grip test scores， tear secretion volume， tear film breakup time （TFBUT）， and corneal fluorescein staining were recorded. Serum levels of reactive oxygen species （ROS）， follicle-stimulating hormone （FSH）， estradiol （E₂）， and progesterone （PROG） were measured by enzyme-linked immunosorbent assay （ELISA）. Pathological changes in the lacrimal glands， corneas， and uteri were observed using hematoxylin-eosin （HE） staining. Protein expression levels of SIRT3， HIF-1α， phosphorylated NF-κB p65 （p-NF-κB p65）， and total NF-κB p65 in the lacrimal glands were detected by Western blot. The expression of inflammatory cytokines interleukin-1β （IL-1β） and tumor necrosis factor-α （TNF-α） in the lacrimal glands was assessed by immunohistochemistry （IHC）. ResultsAfter model establishment， no significant differences were observed among the groups except the sham operation group. Compared with the sham operation group， the other groups exhibited slowed movement， dull responses， increased irritability， reduced body weight， elevated rectal temperature， decreased screen-grip test scores， reduced tear secretion， and significantly shortened TFBUT （P<0.05）. After treatment， compared with the model group， the sodium hyaluronate eye drop group and all RMDHD groups showed improved general conditions， significantly increased tear secretion （P<0.05）， prolonged TFBUT （P<0.05）， and elevated screen-grip test scores （P<0.05）. Serum ROS and FSH levels were significantly decreased， while E₂ and PROG levels were significantly increased （P<0.05）. Pathological damage to the cornea， lacrimal glands， and uterus was ameliorated. In addition， protein expression levels of SIRT3 and HIF-1α in the lacrimal glands were significantly upregulated （P<0.05）， whereas the expression of p-NF-κB p65， IL-1β， and TNF-α was significantly downregulated （P<0.05）. ConclusionRMDHD increases tear secretion and TFBUT， improves lacrimal gland and corneal injury， and alleviates dry eye symptoms in a perimenopausal dry eye rat model with liver-kidney Yin deficiency syndrome. The underlying mechanism may be related to regulation of the SIRT3/HIF-1α/NF-κB signaling pathway， inhibition of oxidative stress and inflammatory responses， and reduction of ocular surface tissue damage.

Objective To analyze the difference of psoas major muscle morphology and pain degree in patients with different types of lumbar disc herniation ( LDH ) by quantitative CT, and to further explore the relationship between psoas major muscle morphology and pain degree. Methods A total of 120 patients with LDH admitted to our hospital from January to December 2025 were enrolled as study subjects. Based on clinical symptoms and lesion location, they were divided into a simple lower extremity pain group and a lumbar and leg pain group. All patients underwent lumbar CT examination. The psoas major muscle index was used as a CT quantitative parameter, which was calculated as the mean of the maximum cross-sectional areas of both psoas major muscles divided by the cross-sectional area of the L5 vertebral body. This index was measured to reflect psoas major muscle morphology. Pain severity was assessed using the visual analogue scale (VAS). Differences in psoas major muscle morphology and pain severity between the two groups were compared. A Pearson correlation analysis was used to examine the relationship between the psoas major muscle index and pain severity. A linear regression model was used to analyze the independent risk factors affecting pain severity. Results There were no statistically significant differences in sex, age, or body mass index between the two groups (P>0.05). The disease duration was longer and the incidence of anxiety and depression was higher in the lumbar and leg pain group than those in the simple lower extremity pain group (P<0.05). Compared with the simple lower extremity pain group, the lumbar and leg pain group showed lower psoas major muscle index [(0.53 ± 0.05) vs. (0.61 ± 0.07)] and higher VAS score [(4.67 ± 1.10) vs. (3.02 ± 0.89)], and the differences were statistically significant (P<0.05). Pearson correlation analysis revealed a negative correlation between the psoas major muscle index and the VAS score (r=−0.288, P<0.05). Linear regression model analysis indicated that the independent risk factors affecting the VAS score were age, disease duration, LDH type, and the psoas major muscle index. Conclusion Compared with LDH patients with simple lower extremity pain, those with lumbar and leg pain demonstrate a longer disease duration, a higher incidence of anxiety and depression, and a higher severity of psoas major muscle atrophy and pain. The severity of pain is associated with not only advanced age and prolonged disease duration but also the LDH type and psoas major muscle atrophy.

Objective To analyze the difference of psoas major muscle morphology and pain degree in patients with different types of lumbar disc herniation ( LDH ) by quantitative CT, and to further explore the relationship between psoas major muscle morphology and pain degree. Methods A total of 120 patients with LDH admitted to our hospital from January to December 2025 were enrolled as study subjects. Based on clinical symptoms and lesion location, they were divided into a simple lower extremity pain group and a lumbar and leg pain group. All patients underwent lumbar CT examination. The psoas major muscle index was used as a CT quantitative parameter, which was calculated as the mean of the maximum cross-sectional areas of both psoas major muscles divided by the cross-sectional area of the L5 vertebral body. This index was measured to reflect psoas major muscle morphology. Pain severity was assessed using the visual analogue scale (VAS). Differences in psoas major muscle morphology and pain severity between the two groups were compared. A Pearson correlation analysis was used to examine the relationship between the psoas major muscle index and pain severity. A linear regression model was used to analyze the independent risk factors affecting pain severity. Results There were no statistically significant differences in sex, age, or body mass index between the two groups (P>0.05). The disease duration was longer and the incidence of anxiety and depression was higher in the lumbar and leg pain group than those in the simple lower extremity pain group (P<0.05). Compared with the simple lower extremity pain group, the lumbar and leg pain group showed lower psoas major muscle index [(0.53 ± 0.05) vs. (0.61 ± 0.07)] and higher VAS score [(4.67 ± 1.10) vs. (3.02 ± 0.89)], and the differences were statistically significant (P<0.05). Pearson correlation analysis revealed a negative correlation between the psoas major muscle index and the VAS score (r=−0.288, P<0.05). Linear regression model analysis indicated that the independent risk factors affecting the VAS score were age, disease duration, LDH type, and the psoas major muscle index. Conclusion Compared with LDH patients with simple lower extremity pain, those with lumbar and leg pain demonstrate a longer disease duration, a higher incidence of anxiety and depression, and a higher severity of psoas major muscle atrophy and pain. The severity of pain is associated with not only advanced age and prolonged disease duration but also the LDH type and psoas major muscle atrophy.

Objective To analyze the difference of psoas major muscle morphology and pain degree in patients with different types of lumbar disc herniation ( LDH ) by quantitative CT, and to further explore the relationship between psoas major muscle morphology and pain degree. Methods A total of 120 patients with LDH admitted to our hospital from January to December 2025 were enrolled as study subjects. Based on clinical symptoms and lesion location, they were divided into a simple lower extremity pain group and a lumbar and leg pain group. All patients underwent lumbar CT examination. The psoas major muscle index was used as a CT quantitative parameter, which was calculated as the mean of the maximum cross-sectional areas of both psoas major muscles divided by the cross-sectional area of the L5 vertebral body. This index was measured to reflect psoas major muscle morphology. Pain severity was assessed using the visual analogue scale (VAS). Differences in psoas major muscle morphology and pain severity between the two groups were compared. A Pearson correlation analysis was used to examine the relationship between the psoas major muscle index and pain severity. A linear regression model was used to analyze the independent risk factors affecting pain severity. Results There were no statistically significant differences in sex, age, or body mass index between the two groups (P>0.05). The disease duration was longer and the incidence of anxiety and depression was higher in the lumbar and leg pain group than those in the simple lower extremity pain group (P<0.05). Compared with the simple lower extremity pain group, the lumbar and leg pain group showed lower psoas major muscle index [(0.53 ± 0.05) vs. (0.61 ± 0.07)] and higher VAS score [(4.67 ± 1.10) vs. (3.02 ± 0.89)], and the differences were statistically significant (P<0.05). Pearson correlation analysis revealed a negative correlation between the psoas major muscle index and the VAS score (r=−0.288, P<0.05). Linear regression model analysis indicated that the independent risk factors affecting the VAS score were age, disease duration, LDH type, and the psoas major muscle index. Conclusion Compared with LDH patients with simple lower extremity pain, those with lumbar and leg pain demonstrate a longer disease duration, a higher incidence of anxiety and depression, and a higher severity of psoas major muscle atrophy and pain. The severity of pain is associated with not only advanced age and prolonged disease duration but also the LDH type and psoas major muscle atrophy.

OBJECTIVE To study the imaging characteristics of the normal cricoarytenoid joint.METHODS A retrospective study was conducted on the upper airway CT images of 175 subjects with normal laryngoscopic findings.According to age groups,a qualitative evaluation was made of the calcification of the arytenoid cartilage(AC),the hyperplasia of the AC,and the degree of stenosis of the cricoarytenoid joint(CAJ).The study aimed to explore the changing trends of these factors with age.We evaluated the spatial position structures such as the length of the vocal cords(l-VC),the distance between the muscle process of the arytenoid cartilage and the thyroid cartilage(d-MPCC),and the angle of the cricoarytenoid joint(a-CAJ).RESULTS There were differences in calcification of AC,hyperplasia of AC and stenosis of CAJ among different age groups.The calcification of AC(r=0.36,P<0.001),hyperplasia of AC(r=0.49,P<0.001)and stenosis of CAJ(r=0.54,P<0.001)the were positively correlated with age.Bilateral l-VC and a-CAJ were symmetry(all P>0.05).CONCLUSION The morphology of the CAJ was symmetrical in the normal population.It gradually underwent calcification,hyperplasia,and stenosis with age.Upper airway CT examination could evaluate the morphology and spatial position of the CAJ,providing an anatomical reference for clinical practice

Objective To investigate the mechanism of action of the Astragalus-Chinese yam combination in treating cancer-related fatigue(CRF)in mice.Methods The active components and related targets of Astragalus-Chinese yam were obtained from the traditional Chinese medicine systems pharmacology database and analysis platform.CRF-associated targets were identified using the GeneCards database.Intersecting targets were analyzed using the DAVID database for gene ontology and kyoto encyclopedia of genes and genomes enrichment analyses.A network diagram depicting"drug-active component-intersecting targets-disease"was constructed using Cytoscape software,and a protein-protein interaction network was created to identify the top five core target proteins based on degree values.Molecular docking simulations were performed using Autodock Vina software.Twenty-five mice were divided randomly into a blank group and a modeling group in a 1∶4 ratio.After successfully establishing the CRF model using Lewis lung cancer cells,mice in the modeling group were further divided into model,Chinese yam(0.2 g/kg),Astragalus(0.6 g/kg),and Astragalus-Chinese yam combination groups(0.3+0.1 g/kg)(n=5 mice per group).The treatments were administered by gavage twice daily for 14 consecutive days.Grip-strength and forced-swimming tests were conducted.The mice were then euthanized and tissues were collected.The gastrocnemius muscles were weighed and stained with hematoxylin and eosin to reveal the muscle fiber morphology.Results A total of 23 effective active components of Astragalus-Chinese yam were identified through network pharmacology analysis,with 199 intersecting drug-disease targets.These targets mainly participated in biological processes such as protein phosphorylation through cellular components(cytoplasm,membrane,nucleus)and performed molecular functions such as protein binding.A total of 155 signaling pathways,including pathway in cancer and the phosphatidylinositol 3-kinase-protein kinase B signaling pathway,were involved in CRF.The critical targets of Astragalus-Chinese yam for CRF included serine/threonine kinase,tumor necrosis factor,epidermal growth factor receptor,B-cell lymphoma 2,and caspase 3.The active components quercetin and diosgenin interacted with the highest number of targets and demonstrated binding energies＜-5.0 kJ/mol with the five core targets,indicating strong ligand-receptor binding affinity.Mice in the Chinese yam and Astragalus groups exhibited increased grip strength and prolonged swimming times compared with the model group.Gastrocnemius muscle volume and mass were increased,with well-organized muscle fibers and clear boundaries,and the effects were even more pronounced in the Astragalus-Chinese yam combination group.Conclusions Astragalus-Chinese yam treats CRF via a multi-target,multi-pathway approach,enhancing muscle strength and endurance in mice,improving gastrocnemius muscle volume and mass,and alleviating muscle atrophy,thereby mitigating the associated symptoms of CRF in mice.

Arthritis, encompassing osteoarthritis (OA), rheumatoid arthritis (RA), and gouty arthritis (GA), is a prevalent inflammatory disease that significantly impacts quality of life. Natural products (NPs), derived from animals, plants, marine organisms, and microorganisms, have demonstrated beneficial effects in arthritis treatment both domestically and internationally. These natural compounds offer advantages in drug discovery due to their skeletal diversity, structural complexity, and multi-effect, multi-target, and low-toxicity properties compared to conventional small-molecule medicines. However, unclear mechanisms have hindered the development and clinical application of NPs. This review summarizes recent experimental studies from the past decade on natural medicine for arthritis treatment, emphasizing key NPs with therapeutic effects on OA, RA, and GA. It examines the effects and molecular mechanisms of NPs acting on different cells to treat arthritis. Furthermore, this review provides insights into the future prospects of NP research in this field, which is crucial for advancing NP-based arthritis treatments.
Humans ; Biological Products/therapeutic use* ; Animals ; Arthritis, Rheumatoid/drug therapy* ; Arthritis, Gouty/drug therapy* ; Arthritis/drug therapy* ; Osteoarthritis/drug therapy*