Retinopathy caused by myopia is the first cause of irreversible blinding eye disease in China.The TCM methods to prevent and control myopia mainly include Chinese materia medica and TCM appropriate techniques,which have the advantages of good efficacy,simple operation,and few adverse reactions.This paper believed that internal and external pathogenic factors act on the brain and eyes,breaking their homeostasis,leading to rhythmic disorders,and imbalance of essence,qi and blood is the main pathogenesis of myopia.Based on the idea of"nature and human in the same rhythm"and"the same treatment for common diseases",targeting the above pathogenesis,the method of"brain-eye synchronization"was proposed to restore the homeostasis of the brain and eyes to prevent and control myopia in children and adolescents,and the treatment rules were to regulate the rhythms of the time,harmonize the qi and blood,nourish the blood to soften the tendons,and replenish the essence and blood,so as to achieve the effect of brain-eye synchronization and the treatment of the spirit and the body together.This article summarized the theoretical basis of"brain-eye synchronization"and its clinical application in traditional Chinese and Western medicine,with a view to providing new ideas for the prevention and control of myopia in children and adolescents.

Traditional Chinese medicine upholds the unity of nature and humanity as its fundamental principle,asserting that man is in harmony with heaven and earth and corresponds to the sun and moon.Human life processes align with the circadian rhythms of nature,exhibiting periodic temporal changes-concepts that Western medicine defines as biological rhythms.The"opening-closing-pivot"of the three yin and three yang meridians represents the primary mode of interaction between nature and humanity.This mechanism regulates the transformation of yin and yang to qi within the body,ensuring synchronization with the circadian rhythm.Building upon this foundation,the concept of"the harmony of rhythms and states"was proposed to explain human growth and aging."Rhythms"encompass not only circadian cycles but also the movement of qi and blood,as well as the contraction rhythm of muscle fascia,among other physiological processes."States"refer to the dynamic evolution and transformation of qi during the"opening-closing-pivot"stages in both time and space."Harmony"pertains not only to the individual physiological balance of"rhythms"or"states"but also to their coherent interaction.The fundamental cause of myopia is"the disharmony of rhythms and states",considering that rhythm disorders,qi and blood disorders,and fascia imbalances contribute to this disease.Based on this understanding,myopia prevention and treatment should center on"regulating rhythms and states",with adjusting the pivot to brighten the eyes as the core therapeutic principle throughout the entire cycle of myopia.Treatment should be tailored to different disease stages and supplemented with methods such as time-based regulation,qi and blood harmonization,tendon relaxation and collateral dredging,and essence and blood nourishment to prevent and manage myopia effectively.

Purpose To explore the diagnostic efficacy of 99Tcm labeled fibroblast activation protein inhibitor(FAPI)SPECT/CT for metastatic lesions in advanced colorectal cancer and its impact on decisions regarding immunotherapy,and to compare it with 18F-FDG PET/CT.Materials and Methods A total of 34 patients with advanced colorectal cancer who underwent both 99Tcm-FAPI SPECT/CT and 18F-FDG PET/CT imaging from August 2022 to November 2023 in Fuzhou University Affiliated Provincial Hospital were prospectively included.The gold standard was based on biopsy or clinical and imaging follow-up results.Chi-square tests and rank sum tests were used to compare differences between the groups.Results Among the 34 patients,17 patients subsequently received immunotherapy.The uptake of 99Tcm-FAPI was significantly higher than that of 18F-FDG for the primary tumor site(Z=-2.389,P=0.017),peritoneal metastasis(Z=-2.497,P=0.013)and liver metastasis(Z=-0.106,P=0.015).The diagnostic efficacy of 99Tcm-FAPI SPECT/CT for patients with peritoneal metastasis was superior to that of 18F-FDG PET/CT(χ2=4.65,P=0.033).Metastatic lesions that did not uptake 99Tcm-FAPI had a better clinical prognosis after immunotherapy(χ2=11.839,P=0.006),and maximum standardized uptake value(SUVmax)-FDG/SUVmax-FAPI ratio was a promising predictive factor for a better prognosis after immunotherapy,with an optimal cut-off value of 5.04.Conclusion 99Tcm-FAPI SPECT/CT has superior diagnostic efficacy for peritoneal metastasis in advanced colorectal cancer compared with 18F-FDG PET/CT.SUVmax-FDG/SUVmax-FAPI ratio is a promising radiomic parameter for predicting patient prognosis after immunotherapy,which can help guide clinical decision-making further.

Chest imaging examination plays an important role in the diagnosis,evaluation and prognosis of interstitial lung disease(ILD).However,the widely used chest high-resolution computed tomography(CT)can only reveal the extent and morphological characteristics of pulmonary lesions,but it can not reflect the pathophysiological process(inflammation or fibrosis)of pulmonary lesions.Recent studies showed that fibroblast activation protein(FAP)can be relatively specifically expressed in fibroblasts activated in fibrotic ar-eas,and FAP inhibitor positron emission tomography(FAPI-PET)may reflect the degree of pulmonary fibrosis and the activity of fibroblasts,which has been used to evaluate the degree of fibrosis in various ILD.In this pa-per,the role and expression of FAP in pulmonary fibrosis and inflammatory tissue of ILD are reviewed,and the recent application of FAPI-PET in various ILD is summarized,which provides insight for the development of new imaging methods for the diagnosis and assessment of ILD.

Chest imaging examination plays an important role in the diagnosis,evaluation and prognosis of interstitial lung disease(ILD).However,the widely used chest high-resolution computed tomography(CT)can only reveal the extent and morphological characteristics of pulmonary lesions,but it can not reflect the pathophysiological process(inflammation or fibrosis)of pulmonary lesions.Recent studies showed that fibroblast activation protein(FAP)can be relatively specifically expressed in fibroblasts activated in fibrotic ar-eas,and FAP inhibitor positron emission tomography(FAPI-PET)may reflect the degree of pulmonary fibrosis and the activity of fibroblasts,which has been used to evaluate the degree of fibrosis in various ILD.In this pa-per,the role and expression of FAP in pulmonary fibrosis and inflammatory tissue of ILD are reviewed,and the recent application of FAPI-PET in various ILD is summarized,which provides insight for the development of new imaging methods for the diagnosis and assessment of ILD.

With the rapid global population aging, multimorbidity is becoming a more serious public health problem, to which medical researchers have paid close attention. A standardized definition of multimorbidity is essential for relevant research. However, there is a lack of consensus on the definition of multimorbidity, which makes it difficult to compare results among studies and replicate important findings. Based on the conceptual comparison, this paper summarizes the key dimensions of the definition of multimorbidity, including the number and types of conditions, the granularity of classification, methods for obtaining outcomes, and settings and objectives of research. It also discusses the inherent relationships among the dimensions and their impact on research results, and introduces the characteristics of the commonly used condition lists in current multimorbidity definition research. By suggesting areas for improvement in the multimorbidity definition system, it aims to enhance the understanding of multimorbidity research and achieve consensus on the definition, thereby facilitating further multimorbidity research.

With population aging worldwide,Alzheimer's disease(AD)has become a serious human health issue.Owing in part to the complexity of the pathogenesis of AD,effective therapeutic options are lacking.Mesenchymal stem cell-derived exosomes(MSC-Exos)have powerful regenerative properties and repair functions,providing a new direction for treatment.They are donor-derived,easily stored,natural carriers,with low immunogenicity and a low risk of tumor formation.They have shown great potential in the treatment of AD and post-treatment rehabilitation.This article introduces the pathological mechanisms of AD and characteristics of MSC-Exos,provides a detailed review of the roles of MSC-Exos in the treatment of AD,including anti-inflammatory effects,immunomodulatory effects,and related signaling pathway modulation,and summarizes recent research progress,with the aim of providing a basis for the development of novel therapeutic approaches to AD.

Purpose To explore the diagnostic efficacy of 99Tcm labeled fibroblast activation protein inhibitor(FAPI)SPECT/CT for metastatic lesions in advanced colorectal cancer and its impact on decisions regarding immunotherapy,and to compare it with 18F-FDG PET/CT.Materials and Methods A total of 34 patients with advanced colorectal cancer who underwent both 99Tcm-FAPI SPECT/CT and 18F-FDG PET/CT imaging from August 2022 to November 2023 in Fuzhou University Affiliated Provincial Hospital were prospectively included.The gold standard was based on biopsy or clinical and imaging follow-up results.Chi-square tests and rank sum tests were used to compare differences between the groups.Results Among the 34 patients,17 patients subsequently received immunotherapy.The uptake of 99Tcm-FAPI was significantly higher than that of 18F-FDG for the primary tumor site(Z=-2.389,P=0.017),peritoneal metastasis(Z=-2.497,P=0.013)and liver metastasis(Z=-0.106,P=0.015).The diagnostic efficacy of 99Tcm-FAPI SPECT/CT for patients with peritoneal metastasis was superior to that of 18F-FDG PET/CT(χ2=4.65,P=0.033).Metastatic lesions that did not uptake 99Tcm-FAPI had a better clinical prognosis after immunotherapy(χ2=11.839,P=0.006),and maximum standardized uptake value(SUVmax)-FDG/SUVmax-FAPI ratio was a promising predictive factor for a better prognosis after immunotherapy,with an optimal cut-off value of 5.04.Conclusion 99Tcm-FAPI SPECT/CT has superior diagnostic efficacy for peritoneal metastasis in advanced colorectal cancer compared with 18F-FDG PET/CT.SUVmax-FDG/SUVmax-FAPI ratio is a promising radiomic parameter for predicting patient prognosis after immunotherapy,which can help guide clinical decision-making further.

Objective:To investigate the specific mechanisms underlying the protective effect of interleukin (IL) -27 in the pathogenesis of psoriasis.Methods:Five skin tissue samples from healthy individuals and 6 lesional skin samples from psoriasis patients were collected, and IL-27 expression was determined by immunohistochemical staining. Il27ra gene knockout (KO) mice were constructed. Psoriasis-like mouse models were established with topical imiquimod in 5 wild-type (WT) mice and 6 KO mice. Mouse skin lesions were evaluated using the modified Psoriasis Area and Severity Index (mPASI), and lesional skin tissues were collected for hematoxylin and eosin (HE) staining to observe changes in epidermal thickness. Single-cell suspensions were prepared with skin lesions and skin-draining lymph nodes of 4 WT mice and 3 KO mice, and changes in immune cells (including T cells, γδ T cells, and neutrophils) were analyzed using flow cytometry. Additionally, skin-draining lymph node cells were isolated from 9 normal WT mice, and IL-17A expression was stimulated using a T-cell receptor agonist (CD3/28 activating antibodies, αCD3/28) or cytokines (IL-23 + IL-1β), followed by the addition of IL-27; peripheral blood mononuclear cells (PBMCs) were isolated from 6 psoriasis patients, and IL-17A expression was stimulated using the T-cell receptor agonist, followed by the addition of IL-27; the effect of IL-27 on IL-17A expression in T cells was analyzed using flow cytometry and enzyme-linked immunosorbent assay (ELISA). Measurement data were compared between two groups using the t test. Results:Immunohistochemical staining revealed a significant reduction in IL-27 expression in psoriatic lesions (mean fluorescence intensity: 9.85 ± 3.07) compared with the normal skin (19.45 ± 2.51, t = 5.60, P < 0.001). Animal experiments demonstrated that the KO mice exhibited significantly aggravated psoriasis-like skin inflammation (mPASI: 4.00 ± 0.89) and significantly increased epidermal thickness (115.50 ± 7.69 μm) compared with the WT mice (mPASI: 2.80 ± 0.84, t = 2.28, P = 0.049; epidermal thickness: 92.26 ± 8.76 μm, t = 4.70, P = 0.001) ; compared with the WT mice, the KO mice showed significantly increased proportions of T cells (11.22% ± 2.76% vs. 7.08% ± 0.85%) and dermal γδ T cells (4.78% ± 0.39% vs. 2.78% ± 0.49%) among live cells in the lesions ( t = 2.91, 2.75, respectively, both P < 0.05), as well as significantly increased proportions of Th17, IL-17 + γδ T, Th22, and IL-22 + γδ T cells in the skin-draining lymph nodes (all P < 0.05), but no significant difference in the proportion of neutrophils in the lesions (WT: 13.57% ± 8.36%, KO: 14.43% ± 9.13%; t = 0.13, P = 0.902). Experiments with different stimuli showed that IL-27 significantly suppressed T-cell receptor agonist-induced IL-17A expression in murine γδ T cells (αCD3/28 group: 1.00 ± 0.11, αCD3/28 + IL-27 group: 0.76 ± 0.13; t = 3.54, P = 0.004), while there was no significant difference in IL-17A expression between cells induced by IL-23 + IL-1β with the IL-27 co-culture and those without ( t = 1.34, P > 0.05). ELISA showed that IL-27 significantly reduced the IL-17A concentration in the culture supernatant of draining lymph node cells stimulated by the T-cell receptor agonist (αCD3/28 group: 1 535.00 ± 97.76 pg/ml, αCD3/28 + IL-27 group: 1 030.00 ± 287.90 pg/ml, t = 3.29, P = 0.031), but did not reduce the IL-17A concentration induced by IL-23 + IL-1β ( t = 0.09, P > 0.05). Flow cytometry indicated that IL-27 significantly inhibited the T-cell receptor agonist-induced IL-17A expression in T cells from psoriasis patients (αCD3/28 group: 4.28 ± 3.25, αCD3/28 + IL-27 group: 3.04 ± 2.65, t = 4.46, P = 0.007) . Conclusion:IL-27 appeared to play a protective role in psoriasis by suppressing IL-17A secretion from T cells.

With population aging worldwide,Alzheimer's disease(AD)has become a serious human health issue.Owing in part to the complexity of the pathogenesis of AD,effective therapeutic options are lacking.Mesenchymal stem cell-derived exosomes(MSC-Exos)have powerful regenerative properties and repair functions,providing a new direction for treatment.They are donor-derived,easily stored,natural carriers,with low immunogenicity and a low risk of tumor formation.They have shown great potential in the treatment of AD and post-treatment rehabilitation.This article introduces the pathological mechanisms of AD and characteristics of MSC-Exos,provides a detailed review of the roles of MSC-Exos in the treatment of AD,including anti-inflammatory effects,immunomodulatory effects,and related signaling pathway modulation,and summarizes recent research progress,with the aim of providing a basis for the development of novel therapeutic approaches to AD.