Cardiovascular disease (CVD) remains one of the leading causes of mortality among adults globally, with continuously rising morbidity and mortality rates. Metabolic disorders are closely linked to various cardiovascular diseases and play a critical role in their pathogenesis and progression, involving multifaceted mechanisms such as altered substrate utilization, mitochondrial structural and functional dysfunction, and impaired ATP synthesis and transport. In recent years, the potential role of peroxisome proliferator-activated receptors (PPARs) in cardiovascular diseases has garnered significant attention, particularly peroxisome proliferator-activated receptor alpha (PPARα), which is recognized as a highly promising therapeutic target for CVD. PPARα regulates cardiovascular physiological and pathological processes through fatty acid metabolism. As a ligand-activated receptor within the nuclear hormone receptor family, PPARα is highly expressed in multiple organs, including skeletal muscle, liver, intestine, kidney, and heart, where it governs the metabolism of diverse substrates. Functioning as a key transcription factor in maintaining metabolic homeostasis and catalyzing or regulating biochemical reactions, PPARα exerts its cardioprotective effects through multiple pathways: modulating lipid metabolism, participating in cardiac energy metabolism, enhancing insulin sensitivity, suppressing inflammatory responses, improving vascular endothelial function, and inhibiting smooth muscle cell proliferation and migration. These mechanisms collectively reduce the risk of cardiovascular disease development. Thus, PPARα plays a pivotal role in various pathological processes via mechanisms such as lipid metabolism regulation, anti-inflammatory actions, and anti-apoptotic effects. PPARα is activated by binding to natural or synthetic lipophilic ligands, including endogenous fatty acids and their derivatives (e.g., linoleic acid, oleic acid, and arachidonic acid) as well as synthetic peroxisome proliferators. Upon ligand binding, PPARα activates the nuclear receptor retinoid X receptor (RXR), forming a PPARα-RXR heterodimer. This heterodimer, in conjunction with coactivators, undergoes further activation and subsequently binds to peroxisome proliferator response elements (PPREs), thereby regulating the transcription of target genes critical for lipid and glucose homeostasis. Key genes include fatty acid translocase (FAT/CD36), diacylglycerol acyltransferase (DGAT), carnitine palmitoyltransferase I (CPT1), and glucose transporter (GLUT), which are primarily involved in fatty acid uptake, storage, oxidation, and glucose utilization processes. Advancing research on PPARα as a therapeutic target for cardiovascular diseases has underscored its growing clinical significance. Currently, PPARα activators/agonists, such as fibrates (e.g., fenofibrate and bezafibrate) and thiazolidinediones, have been extensively studied in clinical trials for CVD prevention. Traditional PPARα agonists, including fenofibrate and bezafibrate, are widely used in clinical practice to treat hypertriglyceridemia and low high-density lipoprotein cholesterol (HDL-C) levels. These fibrates enhance fatty acid metabolism in the liver and skeletal muscle by activating PPARα, and their cardioprotective effects have been validated in numerous clinical studies. Recent research highlights that fibrates improve insulin resistance, regulate lipid metabolism, correct energy metabolism imbalances, and inhibit the proliferation and migration of vascular smooth muscle and endothelial cells, thereby ameliorating pathological remodeling of the cardiovascular system and reducing blood pressure. Given the substantial attention to PPARα-targeted interventions in both basic research and clinical applications, activating PPARα may serve as a key therapeutic strategy for managing cardiovascular conditions such as myocardial hypertrophy, atherosclerosis, ischemic cardiomyopathy, myocardial infarction, diabetic cardiomyopathy, and heart failure. This review comprehensively examines the regulatory roles of PPARα in cardiovascular diseases and evaluates its clinical application value, aiming to provide a theoretical foundation for further development and utilization of PPARα-related therapies in CVD treatment.

Isocitrate dehydrogenase 1 (IDH1) R132H is the most common mutated gene in grade II-III gliomas and oligodendrogliomas. Instead of activating telomerase (a reverse transcriptase which using RNA as a template to extend telomere length), the majority of IDH1^R132H mutant glioma maintain telomere length through an alternative mechanism that relies on homologous recombination (HR), which is known as alterative lengthening of telomere (ALT).The phenotype of ALT mechanism include: ALT associated promyelocytic leukemia protein (PML) bodies (APBs); extrachromosomal telomeric DNA repeats such as C- and T-loops; telomeric sister chromatid exchange (T-SCE), etc. The mechanism of ALT activation is not fully understood. Recent studies have shown that mutation IDH1 contributes to ALT phenotype in glioma cells in at least three key ways. Firstly, the IDH1^R132H mutation mediates RAP1 down-regulation leading to telomere dysfunction, thus ensuring persistent endogenous telomeric DNA damage, which is important for ALT activation. Spontaneous DNA damage at telomeres may provide a substrate for mutation break-induced replication (BIR)‑mediated ALT telomere lengthening, and it has been demonstrated that RAP1 inhibits telomeric repeat-containing RNA, transcribed from telomeric DNA repeat sequences (TERRA) transcription to down-regulate ALT telomere DNA replication stress and telomeric DNA damage, thereby inhibiting ALT telomere synthesis. Similarly, in ALT cells, knockdown of telomere-specific RNaseH1 nuclease triggers TERRA accumulation, which leads to increased replication pressure. Overexpression of RNaseH1, on the other hand, attenuates the recombination capacity of ALT telomeres, leading to telomere depletion, suggesting that RAP1 can regulate the level of replication pressure and thus ALT activity by controlling TERRA expression. Secondly, the IDH1^R132H also alters the preference of the telomere damage repair pathway by down-regulating XRCC1, which inhibits the alternative non-homologous end joining (A-NHEJ) pathway at telomeres and alters cellular preference for the HR pathway to promote ALT. Finally, the IDH1^R132H has a decreased affinity for isocitric acid and NADP+ and an increased affinity for α ketoglutarate (α‑KG) and NADPH, so that the mutant IDH1^R132H catalyzes the hydrogenation of α‑KG to produce 2-hydroxyglutarate (2-HG)in a NADPH-dependent manner. Because 2-HG is structurally similar to α‑KG, which maintains the trimethylation level of H3k9me3 by competitively inhibiting the activity of the α‑KG-dependent histone demethylase KDM4B, and recruits heterochromatin protein HP1α to heterochromatinize telomeres, and promote ALT phenotypes in cooperation with the inactivating of ATRX. In addition, it has been shown that APBs contain telomeric chromatin, which is essentially heterochromatin, and HP1α is directly involved in the formation of APBs. Based on these studies, this article reviews the mechanism of IDH1^R132H mediated telomere dysfunction and the preference of DNA repair pathway at telomeres in cooperate with ATRX loss to promote ALT, which may provide references for clinical targeted therapy of IDH1^R132H mutant glioma.

Objective:To perform harmonization based on the ComBat method for PET brain imaging scanned by different types of scanners from the same manufacturer and explored its effect on center effect.Methods:The three-dimensional (3D) Hoffman brain model was scanned by two different PET/CT instruments (Siemens Biograph64 TruePoint and Biograph128 mCT). Fourteen healthy subjects (8 males, 6 females, age: (57.7±9.5) years) underwent 18F-FDG PET/CT on Siemens Biograph64 TruePoint and 12 healthy subjects (9 males, 3 females, age: (55.8±10.5) years) underwent 18F-FDG PET/CT on Siemens Biograph128 mCT (all from Huashan Hospital, Fudan University; from November 2020 to March 2023). The whole brain was divided into 116 brain regions based on the anatomical automatic labeling (AAL) brain template. The ComBat method was applied to harmonized the PET data from brain model and healthy subjects. Mann-Whitney U test was performed on the radioactive counts and SUV ratios (SUVR) before and after homogenization acquired by both PET/CT instruments. Voxel-based statistical parametric mapping (SPM) independent-sample t test was also performed on data of healthy subjects. Results:In 3D Hoffman brain model, radioactivity counts (5 590.33(4 961.67, 6 102.95) vs 6 116.03(5 420.97, 6 660.66); z=-9.35, P<0.001) and SUVR (1.35(1.19, 1.47) vs 1.37(1.21, 1.49); z=-3.63, P<0.001) were significantly different between the two PET/CT scanners before harmonization and not after harmonization (radioactivity counts: 5 845.95(5 192.68, 6 378.63) vs 5 859.17(5 193.84, 6 380.52); SUVR: 1.35(1.20, 1.48) vs 1.36(1.20, 1.49); both z=-0.68, both P=0.498). In the healthy subjects, radioactive counts in 19 brain regions (12 422.78(11 181.60, 13 424.28)-18 166.40(15 882.80, 18 666.27); z values: from -3.24 to -2.06, all P<0.05) and SUVR in 40 brain regions (1.46(1.41, 1.52)-2.28(2.16, 2.36); z values: from -3.65 to -1.70, all P<0.05) were significantly different between the two scanners before harmonization, while after homogenization there were no statistical differences for all 116 brain regions (radioactivity counts: 9 243.55(8 502.38, 9 854.87)-20 419.60(19 931.51, 21 179.43); z values: from -0.72 to 0, all P>0.05; SUVR: 1.04(1.01, 1.09)-2.32(2.24, 2.40); z values: from -0.82 to 0, all P>0.05). SPM showed that significant differences of glucose metabolism in the cerebral cortex, basal ganglia, midbrain and cerebellum were found in healthy subjects between the two PET/CT scanners before homogenization, and brain regions with obvious differences reduced after homogenization. Conclusion:ComBat harmonization method is efficient at removing the center effect among different types of PET/CT scanners from the same manufacturer and may provide a simple and easy-to-implement homogenization for multicenter brain imaging studies.

Connexin (Cx), a multigene-encoded transmembrane protein family, forms either gap junctions ( GJ) or hemichannels (HC) to mediate intercellular communication in plasma mem¬brane between adjacent cells or interacts with proteins by its car- boxyl terminal in the cytoplasm to participate in the process of tumor cell proliferation, apoptosis, necrosis, invasion, metasta¬sis, drug resistance and stem cell characteristics.However, mi- slocalization of Cx in cytoplasm or nucleus often occurs in many tumors, and involved in the occurrence and development of tumors.Subcellular localization of Cx is affected by post-transla- tional modifications, including phosphorylation, ubiquitination, and acetylation.In this paper the classification and function of Cx, the relationship between subcellular localization of Cx and tumorigenesis and the regulation of post-translational modifica¬tion on Cx are reviewed in order to provide new ideas for the study of Cx as a potential target for cancer therapy.

Aim To explore the apoptosis of small eell lung eancer ( SCLC ) eells HI688 and H446 induced by nitidine chloride and its possible mechanism.Methods The effect of nitidine chloride or cisplatin ( DDP ) on the activity of SCLC cells was detected by j J MTT method; the morphological changes of cells trea¬ted with nitidine chloride or DDP were observed by in- verted fluorescence microscope and HE staining; the effect of nitidine chloride or DDP on apoptosis was de¬tected by flow cytometry; the effect of apoptosis inhibi¬tor Z-VAD-FMK on apoptosis induced by nitidine chlo¬ride or DDP was detected by MTT method.The expres¬sions of Bax , Bcl-2, caspase-3 , PARP, p-PI3K and p- Akt in the cells treated with nitidine chloride or DDP were detected by Western blot.Results MTT results showed that the viability of SCLC cells was significantly reduced after 48 hours of treatment with nitidine chlo¬ ride; compared with DDP, nitidine chloride could in¬hibit SCLC cells with less IC50; inverted fluorescence microscope and HE staining showed that nitidine chlo¬ride could induce apoptosis in SCLC cells, similar to DDP; flow cytometry showed that nitidine chloride J J could induce apoptosis in SCLC cells.The results of MTT assay showed that the inhibitory effect of nitidine chloride on apoptosis of SCLC cells could be partially antagonized by apoptosis inhibitor Z-VAD-FMK.West¬ern blot results showed that, similar to DDP, nitidine chloride could inhibit the expression of PI3K and Akt, increase Bax, inhibit Be 1-2, and promote the cleavage of caspase-3 and PAH P.Conclusion Nitidine chlo¬ride can induce apoptosis of SCLC cells by inhibiting the activation of P13K and Akt.

Objective:To investigate the association between sleep quality and the risk of acute exacerbation in mild and moderate chronic obstructive pulmonary disease （COPD） patients in Pudong New Area of Shanghai. Methods:This was a prospective study involving eligible mild and moderate COPD patients from 10 communities randomly selected in Pudong New District of Shanghai. A structured questionnaire was used to collect demographic characteristics， clinical information and information on acute exacerbation. Sleep quality was assessed using the Pittsburgh Sleep Quality Index （PSQI） in Chinese. Multiple negative binomial regression was used to estimate the association between sleep quality and risk of exacerbation. Results:Altogether 212 mild/moderate COPD patients participated and completed the entire survey， of whom the majority （95.8%） were mild COPD patients， 110 persons female and over half （54.2%） over 65 years old. 32.9% of the patients had poorer sleep quality at baseline. 18.9% of the patients reported exacerbation over the past year during follow-ups. Multiple negative binomial regression suggested that increased PSQI was related to higher risk of exacerbation （RR_ad=1.12， 95%CI：1.02-1.24）， and patients with poorer sleep efficiency had a higher risk of exacerbation （RR_ad=1.66， 95%CI：1.17-5.43）. Conclusion:Poorer sleep quality is associated with a higher risk of exacerbation in community mild/moderate COPD patients， especially in those with problem of sleep efficiency. More attention to sleep disorders is warranted in community management or self-management of patients with COPD.

Objective To investigate the current status of tobacco control in public places in Jiading District, after the introduction of "Tobacco Control Regulation in Public Places of Shanghai" (amendment), providing basic data for further implementing regulations. Methods The method of field observation was adopted to conduct the monitoring in 14 representative public places, including site staff in 109 places in April and September. Results The display rate of tobacco control propaganda increased(χ²=10.588, P < 0.001), but the posting rate of pictures for smoking control warnings decreased(χ²=6.272, P=0.012);the differences between two monitoring results were both statistically significant; the smoking rate in the staff within the workplaces decreased to 5.17%(χ²=20.973, P < 0.05);the differences between two monitoring results were both statistically significant. Conclusion The situation of tobacco control in Jiading District public places is good, but in some places smoking control should be further strengthened, and the intensity of tobacco control in public places should be maintained.

Objective:To evaluate the effect of mirror therapy on lower-limb motor, balance and walking of stroke patients. Methods:Randomized controlled trails (RCTs) about mirror therapy for lower limb function after stroke were recalled in PubMed, Cochrane Library, EMbase, Medline complete, CNKI, Wanfang Data, VIP and CBMdisc. Meta-analysis was conducted using RevMan 5.3 software for eligible RCTs. Results:A total of twelve studies were retrieved, including 590 patients. Mirror therapy improved the scores of Fugl-Meyer Assessment-Lower Extremity (MD = 6.67, 95%CI 5.60 to 7.74; Z = 12.20, P < 0.001), Brunnstrom stages (MD = 0.55, 95%CI 0.28 to 0.82; Z = 3.98, P < 0.001), Berg Balance Scale (MD = 3.45, 95%CI 1.40 to 5.50; Z = 3.30, P = 0.001), mini-BESTest (MD = 1.49, 95%CI 0.65 to 2.33; Z = 3.48, P < 0.001), Brunnel Balance Assessment (MD = 0.66, 95%CI 0.10 to 1.22; Z = 2.32, P = 0.02). However, it was not significant for 10-meter Walking Test (MD = 0.03, 95%CI -0.04 to 0.11; Z = 0.88, P = 0.38) and Timed "Up and Go" Test (MD = -1.43, 95%CI-4.31 to 1.45; Z = 0.97, P = 0.33). Conclusion:Mirror therapy can improve lower extremity motor function after stroke significantly, and somehow for balance. Further research is needed to explore its effects on walking.

Chinese medicine is the traditional treasure of China nation. As the basis of Chinese medicine, traditional Chinese medicine(TCM) plays an important part for the development of Chinese medicine. Genuine medicinal materials with special characteristics of TCM growing in special ecological environment, is recognized as the high quality medicine. Research on genuineness evaluation of TCM is the key to ensure its clinical applications, efficacy and the process of modernization and internationalization for Chinese medicine. Lingnan region of China is situated in the tropical and subtropical zones, where there are rich geothermal and hydrothermal resources. The superior natural and geographic environment of Lingnan has given birth to a variety of native herbal drugs. And treating and preventing diseases with Lingnan herbal drugs has a long story. This study mainly evaluated the genuineness of Lingnan herbal drugs from the aspects of ecological factor, thegenetic information, the history, the culture, the clinical efficacy and the processing, and proposed a new idea to investigate the genuineness of TCM, aiming to provide a scientific basis for genuineness evaluation.
China ; Drugs, Chinese Herbal ; standards ; Environment ; Medicine, Chinese Traditional

OBJECTIVE: The primary objective of this study was to examine the validity and reliability of a semi-quantitative food frequency questionnaire (FFQ) among Chinese children aged 12-17 years. METHODS: A semi-quantitative 72-food item FFQ was developed for children aged 12-17 years. The reliability and validity of this FFQ were evaluated against 24-h dietary recalls (24 h DRs) to measure the consumption of foods and nutrients. We administered two FFQs and three DRs to children (N = 160) over a period of 1 month to evaluate the reliability and validity. Reliability was examined by quartile agreement and intraclass correlation coefficients (ICCs), and validity was examined by quartile agreement, Bland-Altman plots and correlation with DRs. RESULTS: For reliability, the ICCs between the two FFQs ranged from 0.21 to 0.76 for foods and nutrients, and the quartile agreement ranged from 70.0% to 95.0% in the same or adjacent quartiles. Spearman's correlation coefficients of foods and nutrients between the second FFQ and the 24 h DRs ranged from -0.04 to 0.59. The Bland-Altman plots demonstrated good agreement across the range of intakes among nutrients. The quartile agreement ranged from 50.0% to 100.0%, with infrequent misclassification. CONCLUSION The FFQ assessment of dietary intakes demonstrated acceptable relative validity and high reproducibility for Chinese children aged 12-17 years.
Adolescent ; Child ; Diet Records ; Female ; Humans ; Male ; Reproducibility of Results ; Surveys and Questionnaires