Tenascin-C (TNC), an extracellular matrix glycoprotein, is lowly expressed in normal adult tissues while significantly upregulated under pathological conditions such as injury, inflammation, or tumors. Recent studies have shown that TNC plays an important role in Alzheimer's disease (AD) development: it is not only closely related to the formation of β-amyloid (Aβ) plaque, but also involved in neuroinflammation regulation and Aβ clearance process. This article reviews the effect of TNC on AD pathology in aspects of neuroinflammation, synaptic function, autophagy and Aβ load, aiming to provide theoretical basis for TNC-targeted AD treatment and drug development.

Tenascin-C (TNC), an extracellular matrix glycoprotein, is lowly expressed in normal adult tissues while significantly upregulated under pathological conditions such as injury, inflammation, or tumors. Recent studies have shown that TNC plays an important role in Alzheimer's disease (AD) development: it is not only closely related to the formation of β-amyloid (Aβ) plaque, but also involved in neuroinflammation regulation and Aβ clearance process. This article reviews the effect of TNC on AD pathology in aspects of neuroinflammation, synaptic function, autophagy and Aβ load, aiming to provide theoretical basis for TNC-targeted AD treatment and drug development.

OBJECTIVE To investigate the ameliorating effect and mechanism of the effective substance groups from Artemisia ordosica(Abbreviated as HSH)on rheumatoid arthritis(RA)based on cluster of differentiation 4/lymphocyte cell-specific protein-tyrosine kinase/zeta-chain-associated protein kinase of 70 kDa/interleukin-17(CD4/LCK/ZAP70/IL-17)signaling pathway.METHODS The rats were divided into normal group,model group,HSH low-dose,medium-dose and high-dose groups(2.7,10.8,21.6 mg/kg)and positive control group(Tripterygium glycosides tablet,6.3 mg/kg),with 10 rats in each group.Except for normal group,RA rat model was induced by complete Freund's adjuvant in other groups.After modeling,each group was given relevant medicine or normal saline intragastrically,once a day,for 28 consecutive days.The changes in ankle joint swelling and arthritis index in rats were determined;the pathological changes of ankle joint tissue were observed;the levels of inflammatory factors[IL-1β,IL-21,IL-17A,IL-2,interferon-γ(IFN-γ)and IL-6]in serum and joint fluid of rats were determined;the levels of Th1,Th17 and Treg cells in the whole blood and spleen of rats were detected;protein and mRNA expressions of LCK,proto-oncogene tyrosine-protein kinase Fyn(Fyn),ZAP70,CD45,RAR-related orphan receptor γt(RORγt),and forkhead box protein 3(Foxp3)in ankle synovial tissue were determined.RESULTS Compared with normal group,the changes in ankle joint swelling,arthritis index,the levels of IL-1β,IL-21,IL-17A,IL-2,IFN-γ and IL-6 in serum and joint fluid,the levels of Th1,Th17 cells and Th17/Treg value in whole blood and spleen,and the protein and mRNA expression levels of LCK,Fyn,ZAP70,CD45,and RORγt in ankle joint synovium were all significantly increased/elevated(P＜0.05).The level of Treg cells in the spleen,as well as the protein and mRNA expression levels of Foxp3 in the ankle joint synovium were significantly decreased(P＜0.05).Compared with model group,most of the above-mentioned indicators were significantly reversed in the positive control group and all dose groups of HSH(P＜0.05).The degree of pathological changes in ankle joint tissues was markedly improved,and inflammation was alleviated.CONCLUSIONS HSH can regulate the cascade reactions in the CD4/LCK/ZAP70/IL-17 pathway within the T-cell receptor signaling pathway,thereby modulating the Th17/Treg balance.This leads to the suppression of inflammatory responses and the alleviation of synovial tissue damage in rats with RA.

Objective To explore the effectiveness of building block assembly games in the upper limb functional exercise of school-aged children with peripherally inserted central catheter catheterization.Methods Using convenience sampling,90 catheterized children who met the inclusion criteria in the pediatric ward of a tertiary hospital in Henan Province from November 2022 to April 2023 were selected as research subjects.They were randomly divided into an experimental group and a control group,with 45 cases in each group.The experimental group participated in building block assembly games in addition to conventional ball-gripping exercises,while the control group engaged solely in conventional ball-gripping exercises.The compliance rates of upper limb exercises,time average peak flow rate of axillary vein of the catheterization side,and the incidence of catheter-related complications were compared between the 2 groups.Results During the study,2 cases in the experimental group and 3 in the control group dropped out,resulting in 43 cases in the experimental group and 42 in the control group.The compliance rate of upper limb exercises in the experimental group during hospitalization was 93.03％,significantly higher than 64.29％in the control group(P＜0.001).On the third day after catheterization,the time average peak flow rate of axillary vein of the catheterization side was(5.58±1.24)cm/s and(5.37±1.24)cm/s on the seventh day in the experimental group,compared to(3.87±1.06)cm/s and(3.56±0.81)cm/s,respectively,in the control group.These differences were statistically significant(P＜0.001).The incidence of catheter-related thrombosis in the experimental group was 4.65％,significantly lower than 21.43％in the control group(P=0.021).The rates of bleeding at the puncture site and catheter displacement in the experimental group were both 4.65％,compared to 7.14％and 4.76％,respectively,in the control group.These differences were not statistically significant(both P＞0.05).Conclusion Incorporating building block assembly games into routine ball-gripping exercises can improve the compliance of upper limb exercises in children with PICC placement,improve the blood flow velocity in the axillary vein of the catheterization upper limb,and reduce the incidence of catheter-related thrombosis,without increasing the risk of bleeding at the puncture site or catheter displacement.

In the process of modernization of Traditional Chinese Medicine(TCM),it is an urgent issue to consider how to strengthen the confidence of TCM culture,maintain composure without being"backfired",and maintain relative independence without being"diluted".Integrating Zhang Zhongjing's life and academic thoughts into the thousands of years of development of TCM,we are excavate and examine it from the perspective of Medical Literature Collaboration,and find that it has accumulated profound spiritual strength.Systematically condensed the connotation of Zhongjing Spirit,specifically including the medical spirit of putting people first and putting life first.The medical spirit of perseverance and the courage to climb new heights.Inherit the medical spirit of essence,integrity and innovation;The medical spirit of objectivity and scientificity.The rigorous medical style and cautious clinical spirit.The contemporary value of Zhongjing Spirit is significant,which is a distinctive way to promote cultural confidence and self-improvement,and to create the brilliance of Chinese culture.It is an important embodiment of adhering to the people as the center and promoting Chinese path to modernization.Key measures to inherit Zhong Jing's academic ideas and promote innovation in TCM.It is an inevitable requirement to explore the value of TCM and promote the development of healthy industries.Zhang Zhongjing's scholarship and spirit is an important core and pillar of TCM,an important support in the process of modernization of TCM,and a strong driving force for the development of TCM.It is worth constantly digging and inheriting.

In the process of modernization of Traditional Chinese Medicine(TCM),it is an urgent issue to consider how to strengthen the confidence of TCM culture,maintain composure without being"backfired",and maintain relative independence without being"diluted".Integrating Zhang Zhongjing's life and academic thoughts into the thousands of years of development of TCM,we are excavate and examine it from the perspective of Medical Literature Collaboration,and find that it has accumulated profound spiritual strength.Systematically condensed the connotation of Zhongjing Spirit,specifically including the medical spirit of putting people first and putting life first.The medical spirit of perseverance and the courage to climb new heights.Inherit the medical spirit of essence,integrity and innovation;The medical spirit of objectivity and scientificity.The rigorous medical style and cautious clinical spirit.The contemporary value of Zhongjing Spirit is significant,which is a distinctive way to promote cultural confidence and self-improvement,and to create the brilliance of Chinese culture.It is an important embodiment of adhering to the people as the center and promoting Chinese path to modernization.Key measures to inherit Zhong Jing's academic ideas and promote innovation in TCM.It is an inevitable requirement to explore the value of TCM and promote the development of healthy industries.Zhang Zhongjing's scholarship and spirit is an important core and pillar of TCM,an important support in the process of modernization of TCM,and a strong driving force for the development of TCM.It is worth constantly digging and inheriting.

OBJECTIVE Microgravity exerts several negative effects on the learning and memory of astro-nauts during space flight.Rg1 and Rb1,the key steroidal components of ginseng,have shown potent neuroprotec-tive effects with a high safety profile.The object of the current study is to investigate the influence of Rg1 and Rb1 on simulated microgravity-induced memory and learning dysfunction in the hindlimb suspension(HLS)rat model.METHODS The HLS rats were orally administered Rg1(30 and 60 μmol·kg-1)or Rb1(30 and 60 μmol·kg-1)for four weeks.The Morris water maze test(MWM)and reward operating conditioning reflex test(ROCR)were conducted to evaluate spatial and associative learning and memory.After the behavior tests,the serum and the prefrontal cortex(PFC)were dissected to measure the mechanism.RESULTS Rg1 and Rb1 treatment amelio-rated the cognitive deficits of HLS-exposure rats in MWM and ROCR,reduced reactive oxygen species generation and increased antioxidant enzyme activity.Rg1 and Rb1 also assisted in the recovery of mitochondrial complex Ⅰ(NADH dehydrogenase)activities and Mfn2,and decrea-sed Drp-1 expression.Furthermore,Rg1 and Rb1 reduced the ratio of Bax/Bcl-2 and the expression of cleaved-cas-pase 3,cytochrome c,increased the levels of SYN,PSD95 and activated BDNF-TrkB/PI3K-Akt pathway in the PFC.CONCLUSION Rg1 and Rb1 treatment attenuated cog-nitive deficits induced by HLS,mitigated mitochondrial dysfunction,attenuated oxidative stress,inhibited apopto-sis,and increased the synaptic plasticity,which was partly mediated by the modulation of the BDNF-TrkB/PI3K-Akt signaling.

OBJECTIVE: To establish a high-performance liquid chromatographic method (HPLC) for the simultaneous determination of 16 compounds from Artemisia ordosica. METHODS: HPLC was used to analyze 16 quality indicators of A. ordosica. The HPLC conditions were as follows: Agilent Eclipse Plus C₁₈ column (250 mm × 4.6 mm, 5 μm) with acetonitrile (A)-water (B) as mobile phase, gradient elution: 0-10 min, 75%-65% B; 10-30 min, 65%-35% B; and finally 30-40 min, 35%-15% B. The flow rate was 1.0 mL/min, the column temperature was 40 °C, the injection volume was 10 μL, and monitored by absorbance at 285 nm for compounds 1- 10, 12 and 225 nm for compounds 11, 13- 16. RESULTS: Under the selected experimental chromatographic conditions, compounds 1- 16 showed good linearity (r > 0.9993) in a wide concentration range. Their average recoveries were 99.50%, 95.38%, 97.75%, 96.00%, 98.20%, 97.50%, 95.50%, 99.33%, 96.75%, 96.50%, 98.50%, 97.83%, 99.20%, 95.33%, 97.33% and 96.30%, respectively, and the RSD were 1.99%, 1.81%, 1.63%, 1.98%, 1.67%, 1.92%, 1.74%, 1.67%, 1.90%, 1.72%, 1.88%, 1.83%, 1.79%, 1.76%, 1.81% and 1.96%, respectively. CONCLUSION Based on the results of the HPLC analysis, it was concluded that p-hydroxycinnamic acid ( 1), O-hydroxycinnamic acid ( 2), coniferyl alcohol ( 5), 5,4'-dihydroxy-7,3'-dimethoxyflavanone ( 8), 5,4'-dihydroxy-7-methoxyflavanone ( 9), 5-hydroxy-7,4'-dimethoxyflavanone ( 12), dehydrofalcarindiol ( 13), arteordoyn A ( 14), dehydrofalcarinol ( 15) and capillarin ( 16) are best suited for the role of quality indicators of A. ordosica grown in different ecological environments.

ObjectiveTo explore the effect of Guilu Erxianjiao on improving reproductive injury in diabetic rats and its possible mechanism. MethodFifty-three SD male rats were randomly divided into 5 groups， with 1 group as the normal group and the other 4 groups as the modeling groups. Rats in the modeling groups were fed with a high-fat diet combined with 30 mg·kg^-1 streptozotocin （STZ） intraperitoneal injection to induce diabetes， with the random blood glucose >16.7 mmol·L^-1 for 3 consecutive times as the criteria for inclusion in the model of diabetic reproductive injury. The rats with diabetic reproductive injury were then randomly divided into a model group， a Guilu Erxianjiao group （2 g·kg^-1）， a Vitamin E group （0.03 g·kg^-1）， and a Wuzi Yanzong pill group （0.6 g·kg^-1） according to the blood glucose level. The rats were given the corresponding drug dose intragastric administration， once a day for 4 weeks， and their body weight and blood glucose were measured weekly. After 4 weeks， samples were collected for index determination. Morphological changes in testis and epididymis were observed by hematoxylin-eosin （HE） staining， and apoptosis of testis cells was observed by in situ end labeling （TUNEL） staining. Sperm concentration and motility were detected by the semen analyzer. Serum levels of follicle-stimulating hormone （FSH）， luteinizing hormone （LH）， and testosterone （T） were determined by enzyme-linked immunosorbent assay （ELISA）. The content of superoxide dismutase （SOD）， propylene glycol （MDA）， reactive oxygen species （ROS）， and glutathione peroxidase （GSH-Px） in the testicular tissue was determined by ELISA. The expressions of nuclear respiratory factor-2 （Nrf2）， heme oxygenase 1 （HO-1）， B-cell lymphoma-2 （Bcl-2）， and Bcl-2 associated X protein （Bax） in the testicular tissue were detected by Western blot. ResultAs compared with the normal group， testicular tissue atrophy， decreased spermatogenic tubules， epididymal wall hyperplasia， and lumen stenosis were observed in the model group. Sperm concentration and motility decreased （P<0.01）， and serum levels of T， FSH， and LH decreased （P<0.01） in the model group. The content of ROS and MDA in the testis increased （P<0.01）， while that of SOD and GSH-Px decreased （P<0.01） in the model group. The expression of Bax increased （P<0.01）， and the expressions of Nrf2， HO-1， and Bcl-2 decreased （P<0.01） in the model group. As compared with the model group， the pathological changes in the testis and epididymis in the Guilu Erxianjiao group were improved to some extent. Sperm concentration and motility increased （P<0.05， P<0.01）. In the Guilu Erxianjiao group， serum levels of T and LH increased （P<0.05， P<0.01）， while FSH levels showed no significant difference. The content of ROS and MDA in the testis decreased （P<0.01）， while that of SOD and GSH-Px increased （P<0.01） in the Guilu Erxianjiao group. The expression of Bax decreased （P<0.01）， and the expressions of Nrf2， HO-1， and Bcl-2 increased （P<0.05， P<0.01） in the Guilu Erxianjiao group. ConclusionGuilu Erxianjiao improves the reproductive injury and sperm quality of diabetic rats to a certain extent， and the mechanism may be related to the improvement of oxidative stress and anti-apoptosis.

Guilu-Erxian Gum, a famous prescription of Traditional Chinese Medicine, which could warm the kidney and benefit essence, tonify qi and nourishing the blood. It's main function is to treat chronic kidney deficiency, sour waist and soft knees, lack of essence and blood, spermatorrhea and impotence. This prescription has been changed and expanded in the dosage, preparation and efficacy of Chinese medicine included in the classics. Pharmacological studies have shown that it can strengthen the bone, play the role of anti-tumor, relieve bone marrow suppression, improve sperm quality and relieve post-traumatic stress disorder. The modern clinical application of this priscriptionhas been greatly expanded. It can be used in the treatment of adverse reactions after chemotherapy, liver cirrhosis, hypoproteinemia, osteoporosis, osteoarthritis, AD and other diseases. It is often used in combination with other medicine or treatment methods, and could achieve good results.