Non-invasive body fluids contain a wealth of health-related biomarkers.Monitoring these biomarkers can provide valuable information for disease diagnosis,health management,drug abuse screening,and sports performance optimization.In this work,a carbon nanotube-polysiloxane(CNT-Putty)-based wearable electrochemical sensor was constructed on glove by screen-printing method.This electrode material had not only a simple composition,but also a relatively simple synthesis process.In addition,the electrode exhibited superior electrochemical performance compared to commercial screen-printed electrodes.When applied to uric acid(UA)detection in three different body fluids,the CNT-Putty working electrode demonstrated excellent linearity,selectivity,and a low detection limit.The wearable glove sensor could successfully monitor UA levels in body fluids under varying dietary conditions,indicating its potential for personalized UA monitoring and management.

To elucidate the mechanism by which steaming affects the quality of Curcuma kwangsiensis root tubers, methods such as LSCM, RVA, dual-wavelength spectrophotometry, LF-NMR, and LC-MS were employed to qualitatively and quantitatively detect changes in starch gelatinization characteristics, water distribution, and material composition of C. kwangsiensis root tubers under different steaming durations. Based on multivariate statistical analysis, the correlation between differences in gelatinization parameters, water distribution, and terpenoid material composition was investigated. The results indicate that steaming affects both starch gelatinization and water distribution in C. kwangsiensis. During the steaming process, transformations occur between amylose and amylopectin, as well as between semi-bound water and free water. After 60 min of steaming, starch gelatinization and water distribution reached an equilibrium state. The content of amylopectin, the amylose-to-amylopectin ratio, and parameters such as gelatinization temperature, viscosity, breakdown value, and setback value were significantly correlated(P≤0.05). Additionally, the amylose-to-amylopectin ratio was significantly correlated with total free water and total water content(P≤0.05). Steaming induced differences in the material composition of C. kwangsiensis root tubers. Clustering of primary metabolites in the OPLS-DA model was distinct, while secondary metabolites were classified into 9 clusters using the K-means clustering algorithm. Differential terpenoid metabolites such as(-)-α-curcumene were significantly correlated with zerumbone, retinal, and all-trans-retinoic acid(P<0.05). Curcumenol was significantly correlated with isoalantolactone and ursolic acid(P<0.05), while all-trans-retinoic acid was significantly correlated with both zerumbone and retinal(P<0.05). Alpha-tocotrienol exhibited a significant correlation with retinal and all-trans-retinoic acid(P<0.05). Amylose was extremely significantly correlated with(-)-α-curcumene, curcumenol, zerumbone, retinal, all-trans-retinoic acid, and α-tocotrienol(P<0.05). Amylopectin was significantly correlated with zerumbone(P<0.05) and extremely significantly correlated with(-)-α-curcumene, curcumenol, zerumbone, retinal, all-trans-retinoic acid, and 9-cis-retinoic acid(P<0.01). The results provide scientific evidence for elucidating the mechanism of quality formation of steamed C. kwangsiensis root tubers as a medicinal material.
Curcuma/chemistry* ; Starch/chemistry* ; Multivariate Analysis ; Water/chemistry* ; Terpenes/analysis* ; Plant Roots/chemistry* ; Plant Tubers/chemistry* ; Drugs, Chinese Herbal/chemistry*

Amoenucles A-F (1-6), six previously undescribed nucleoside derivatives, and two known analogs (7 and 8) were isolated from the culture of Aspergillus amoenus TJ507. Their structures were elucidated through spectroscopic analysis, single-crystal X-ray crystallography, and chemical reactions. Notably, 3 and 4 represent the first reported instances of nucleosides with an attached pyrrole moiety. Of particular significance, the absolute configuration of the sugar moiety of 1-4 was determined using nuclear magnetic resonance (NMR), electric circular dichroism (ECD) calculations, and a hydrolysis reaction, presenting a potentially valuable method for confirming nucleoside structures. Furthermore, 1, 2, and 5-8 exhibited potential tumor necrosis factor α (TNF-α) inhibitory activities, which may provide a novel chemical template for the development of agents targeting autoimmune and inflammatory diseases.
Aspergillus/chemistry* ; Tumor Necrosis Factor-alpha/antagonists & inhibitors* ; Molecular Structure ; Nucleosides/isolation & purification* ; Crystallography, X-Ray ; Animals ; Humans ; Mice ; Magnetic Resonance Spectroscopy

Most of the life forms on Earth have gradually evolved an endogenous biological clock under the long-term influence of periodic daily light-dark cycles. This biological clock system plays a crucial role in the orderly progression of life activities. In mammals, central circadian clock is located in the suprachiasmatic nucleus of the hypothalamus and the function of the biological clock relies on a transcription-translation negative feedback loop. As a negative regulator in this loop, the function of CHRONO is less known. To deeply explore the role of the Chrono gene in rhythm entrainment and physiology, we constructed a Chrono gene knockout mouse strain using the CRISPR/Cas9 technology and analyzed its entrainment ability under different T cycles. Running wheel tests and glucose tolerance tests were also performed. The results showed that the period of the endogenous biological clock of Chrono knockout mice was prolonged, and the entrainment rate under the T21 cycle was decreased. In addition, metabolic abnormalities, including weight gain and impaired glucose tolerance, were observed in the non-entrained mice. Overall, this study reveals a crucial role of the Chrono gene in maintaining circadian rhythms and metabolic balance, providing a new perspective for understanding the relationship between the biological clock and metabolism. Further research is needed to fully understand the underlying molecular mechanisms.
Animals ; Mice, Knockout ; Mice ; Circadian Rhythm/genetics* ; Metabolic Diseases/physiopathology* ; Photoperiod ; Male ; Period Circadian Proteins/physiology* ; Light ; Circadian Clocks/physiology*

Degenerative cervical myelopathy(DCM)is a group of diseases caused by cervical spine degeneration that compresses the spinal cord.It is a major cause of spinal cord dysfunction in adults,and its incidence is increasing globally.In the late stage,DCM could lead to paralysis due to spinal cord injury,which makes rapid,effective,and accurate medical diagnosis clinically significant.Deep learning(DL)technology can assist physicians in the rapid and accurate diagnosis of DCM by analyzing and processing a large amount of imaging data to extract features of the affected regions.In recent years,DL algorithm models have been leveraged for DCM-related research,which has become a focal point of intelligent medical development.In this review,domestic and international literature is surveyed,and the research progress and application of DL technology in the auxiliary diagnosis and prognosis evaluation of DCM are systematically summarized,aiming to provide a reference for intelligent diagnosis in clinical practice.

Objective To observe the clinical efficacy and safety of different doses of poractant alfa injection combined with mechanical ventilation in the treatment of children with very low body mass and neonatal respiratory distress syndrome(NRDS).Methods According to cohort method,children with very low body mass and NRDS were divided into control group and treatment group.On basis of mechanical ventilation,control group were treated with 100 mg·kg-1 poractant alfa injection;treatment group were treated with 200 mg·kg-1 poractant alfa injection.The clinical curative effect,recovery related indexes,ventilation function,blood gas indexes[partial pressure of carbon dioxide(PaCO2),pH,partial pressure of oxygen(PaO2)],inflammatory factors[interleukin(IL)-6,C-reactive protein(CRP)]and complications in the two groups were compared,and the safety was evaluated.Results There were 43 cases in control group and 43 cases in treatment group.After treatment,there was significant difference in total response rate between treatment group and control group[93.02％(40 cases/43 cases)vs 76.74％(33 cases/43 cases),P＜0.05].After treatment,injection frequencies in treatment group and control group were(1.02±0.15)and(1.47±0.50)times,oxygen inhalation time was(90.45±7.31)and(116.72±10.24)h,mechanical ventilation time were(81.27±6.81)and(99.69±9.05)h,hospitalization time was(12.15±2.07)and(16.29±2.53)d,fraction of inspired oxygen were(36.39±4.07)％and(40.54±5.13)％,positive end-expiratory pressure were(3.64±0.53)and(4.05±0.69)cmH2O,peak inspiratory pressure were(20.12±1.45)and(22.69±1.62)cmH2O,PaCO2 were(31.45±4.21)and(37.72±5.06)mmHg,pH were 7.36±0.30 and 7.21±0.27,PaO2 were(83.46±6.45)and(78.58±5.93)mmHg,levels of serum IL-6 were(36.21±4.03)and(54.83±5.69)ng·L-1,CRP levels were(8.03±2.11)and(11.28±3.06)mg·L-1,and the differences were statistically significant(all P＜0.05).There was significant difference in incidence of complications between treatment group and control group[9.31％(4 cases/43 cases)vs 25.57％(11 cases/43 cases),P＜0.05].The adverse drug reactions were mainly on rash,gastrointestinal dysfunction and irritability in treatment group,while which in control group were rash and gastrointestinal dysfunction.There was no significant difference in total incidence of adverse drug reactions between treatment group and control group[9.30％(4 cases/43 cases)vs 6.98％(3 cases/43 cases),P＞0.05].Conclusion 200 mg·kg-1 poractant alfa injection combined with mechanical ventilation can promote the recovery of children with very low body mass and NRDS,improve ventilation function and blood gas indexes,alleviate inflammatory response and reduce complications,and the safety is good.

Objective:To explore the molecular mechanism by which adipose-derived mesenchymal stem cell exosomes (ADSC-Exos) inhibit hypertrophic scars (HS), and to identify the key functional miRNA and its downstream signaling pathway.Methods:A mouse model of hypertrophic scars was established by subcutaneous injection of bleomycin. The dorsal fibrotic modeling area was intervened with human ADSC-Exos (ADSC-Exos group), while the control group was injected with the same volume of PBS. HE and Masson staining were used to evaluate the morphological changes and collagen deposition of skin scar tissue in the two groups. Immunohistochemistry was performed to detect the expression of collagen 1 (Col-1) and α-smooth muscle actin (α-SMA). Western blot was used to determine the expression levels of key proteins in the transforming growth factor-β1 (TGF-β1)/Smad pathway (p-Smad2/3, Smad2/3). RNA sequencing datasets from the public database (GEO) were downloaded to analyze and screen differentially expressed miRNAs after ADSC-Exos treatment. In vitro cultured human hypertrophic scar fibroblasts (HSF) were transfected with miR-376b-5p mimic or inhibitor on the basis of ADSC-Exos treatment, and the expression of fibrosis markers (Col-1, α-SMA) as well as p-Smad2/3 and Smad2/3 was detected.Results:In vivo experiments showed that ADSC-Exos treatment significantly improved the fibrotic phenotype of mouse scar tissue, reduced the expression of Col-1 and α-SMA, and decreased the phosphorylation of Smad2/3 protein. Bioinformatics analysis revealed that miR-376b-5p was one of the most significantly upregulated miRNAs after ADSC-Exos treatment. In vitro experiments confirmed that overexpression of miR-376b-5p could mimic the antifibrotic effect of ADSC-Exos, significantly inhibit the expression of Col-1 and α-SMA in HSF, and reduce the phosphorylation level of Smad2/3. Specific inhibition of miR-376b-5p could effectively reverse the inhibitory effect of ADSC-Exos on the fibrotic phenotype of HSF and the phosphorylation of Smad2/3.Conclusions:This study reveals that ADSC-Exos exert their antifibrotic effect by mediating miR-376b-5p to target and inhibit the activation of the TGF-β1/Smad signaling pathway. miR-376b-5p is a key functional molecule in ADSC-Exos, and this finding provides a new potential target for the treatment of HS.

Aim To investigate the protective effect of Vaccarin(Va)on epithelial-mesenchymal transition(EMT)in renal fibrosis model mice through regulating STAT3,and the underlying mechanism.Methods Left ureter ligation was used to establish a mouse model of unilateral ureteral obstruction(UUO);human kid-ney tubular epithelial(HK2)cells were induced to differentiate by transforming growth factor-β(TGF-β)in vitro.HE and Masson staining were used to observe the morphological changes of renal tissue;kits were used to detect the levels of BUN,Cr,IL-1β and IL-7 in mouse serum;CCK-8 was used to detect the effect of Va on the viability of HK2 cells;RT-PCR was used to detect the levels of inflammatory factors in HK2 cells;Western blot was used to detect the expression of STAT3,p-STAT3,E-cadherin,and α-SMA proteins in renal tissue and HK2 cells;to further investigate the regulation of Va on STAT3,JAK/STAT3 pathway acti-vator RO8191 was used to treat TGF-β-induced HK2 cells,and functional loss was detected.Results Va improved the pathological damage in UUO mice,inhibi-ted the levels of BUN,Cr and inflammatory factors;Va inhibited the phosphorylation of STAT3,upregulated E-cadherin,and downregulated α-SMA protein expres-sion;RO8191 counteracted the inhibitory effect of Va on the phosphorylation of STAT3.Conclusions Va inhibits the phosphorylation of STAT3 and the release of inflammatory factors,improves EMT,thus exerting an anti-renal fibrosis effect.

Aim To investigate the protective effect of Vaccarin(Va)on epithelial-mesenchymal transition(EMT)in renal fibrosis model mice through regulating STAT3,and the underlying mechanism.Methods Left ureter ligation was used to establish a mouse model of unilateral ureteral obstruction(UUO);human kid-ney tubular epithelial(HK2)cells were induced to differentiate by transforming growth factor-β(TGF-β)in vitro.HE and Masson staining were used to observe the morphological changes of renal tissue;kits were used to detect the levels of BUN,Cr,IL-1β and IL-7 in mouse serum;CCK-8 was used to detect the effect of Va on the viability of HK2 cells;RT-PCR was used to detect the levels of inflammatory factors in HK2 cells;Western blot was used to detect the expression of STAT3,p-STAT3,E-cadherin,and α-SMA proteins in renal tissue and HK2 cells;to further investigate the regulation of Va on STAT3,JAK/STAT3 pathway acti-vator RO8191 was used to treat TGF-β-induced HK2 cells,and functional loss was detected.Results Va improved the pathological damage in UUO mice,inhibi-ted the levels of BUN,Cr and inflammatory factors;Va inhibited the phosphorylation of STAT3,upregulated E-cadherin,and downregulated α-SMA protein expres-sion;RO8191 counteracted the inhibitory effect of Va on the phosphorylation of STAT3.Conclusions Va inhibits the phosphorylation of STAT3 and the release of inflammatory factors,improves EMT,thus exerting an anti-renal fibrosis effect.

Objective To observe the clinical efficacy and safety of different doses of poractant alfa injection combined with mechanical ventilation in the treatment of children with very low body mass and neonatal respiratory distress syndrome(NRDS).Methods According to cohort method,children with very low body mass and NRDS were divided into control group and treatment group.On basis of mechanical ventilation,control group were treated with 100 mg·kg-1 poractant alfa injection;treatment group were treated with 200 mg·kg-1 poractant alfa injection.The clinical curative effect,recovery related indexes,ventilation function,blood gas indexes[partial pressure of carbon dioxide(PaCO2),pH,partial pressure of oxygen(PaO2)],inflammatory factors[interleukin(IL)-6,C-reactive protein(CRP)]and complications in the two groups were compared,and the safety was evaluated.Results There were 43 cases in control group and 43 cases in treatment group.After treatment,there was significant difference in total response rate between treatment group and control group[93.02％(40 cases/43 cases)vs 76.74％(33 cases/43 cases),P＜0.05].After treatment,injection frequencies in treatment group and control group were(1.02±0.15)and(1.47±0.50)times,oxygen inhalation time was(90.45±7.31)and(116.72±10.24)h,mechanical ventilation time were(81.27±6.81)and(99.69±9.05)h,hospitalization time was(12.15±2.07)and(16.29±2.53)d,fraction of inspired oxygen were(36.39±4.07)％and(40.54±5.13)％,positive end-expiratory pressure were(3.64±0.53)and(4.05±0.69)cmH2O,peak inspiratory pressure were(20.12±1.45)and(22.69±1.62)cmH2O,PaCO2 were(31.45±4.21)and(37.72±5.06)mmHg,pH were 7.36±0.30 and 7.21±0.27,PaO2 were(83.46±6.45)and(78.58±5.93)mmHg,levels of serum IL-6 were(36.21±4.03)and(54.83±5.69)ng·L-1,CRP levels were(8.03±2.11)and(11.28±3.06)mg·L-1,and the differences were statistically significant(all P＜0.05).There was significant difference in incidence of complications between treatment group and control group[9.31％(4 cases/43 cases)vs 25.57％(11 cases/43 cases),P＜0.05].The adverse drug reactions were mainly on rash,gastrointestinal dysfunction and irritability in treatment group,while which in control group were rash and gastrointestinal dysfunction.There was no significant difference in total incidence of adverse drug reactions between treatment group and control group[9.30％(4 cases/43 cases)vs 6.98％(3 cases/43 cases),P＞0.05].Conclusion 200 mg·kg-1 poractant alfa injection combined with mechanical ventilation can promote the recovery of children with very low body mass and NRDS,improve ventilation function and blood gas indexes,alleviate inflammatory response and reduce complications,and the safety is good.