This study was aimed to discuss the dynamic variation of soluble sugar contents, sucrose metabolizing en-zyme activities and gene expression quantities during the fruits development of A momum villosum, in order to pro-vide the basis of improvement of the fruit yield. Fresh fruits at three different development processes (30 DAF, 60 DAF, 90 DAF) were used to investigate changes of soluble sugar components and sucrose metabolizing enzyme activ-ities by HPLC and UV spectrophotometry. Combining with the high-throughput sequencing expression profile data of three fruit development period, the trends of three key enzymes gene expressed in sugar metabolism were analyzed. The results showed that the fruit sugar components were dominated by fructose, glucose and sucrose. The concentra-tion of hexose (fructose and glucose) gradually decreased in peel. But in seeds the concentration of hexose decreased at first and then increased. The content of sucrose and the net activities of sucrose synthase (synthesizing direction minus decomposing direction) in peel and seeds were gradually increased. The expression trends of key enzyme gene in sugar metabolism examined by RNA-seq quantification showed that sucrose phosphate synthase and sucrose syn-thase gene increased and then kept constant, but the invertase gene expression trend was gradually rising. Conse-quently, sucrose synthase was the key enzyme catalyzing sucrose synthesis and decomposition. The activity of sucrose synthase and sucrose contents in peel and seeds reached the highest peak in the end of fruit mature.

Objective To observe the effect of advanced oxidation protein products (AOPPs) on articular and synovial in a rabbit model of osteoarthritis (OA).Methods 48 male New Zealand rabbits were randomly divided into 3 groups:AOPPs group,PBS group and sham-operated group.OA model were created in AOPPs group and PBS group by anterior cruciate ligament transection and medial meniscus resection (ACLT+MMx).then intra-articular injection of 1 ml AOPPs or PBS were performed once every other day in AOPPs group and PBS group,respectively.In sham-operated group,the anterior cruciate ligament was just exposed without transection,and then the incision was sutured.All rabbits were saerificed after 4 and 8 weeks of intervention,respectively.Results The India ink seore of 4 and 8 weeks were 4.19±0.60,5.75±0.60 in AOPPs group,and 1.06±0.18,1.38±0.60 in sham-operated group,2.50±0.46、3.06±0.62 in PBS group,respectively.In addition,the differences were statistically significant among the three groups.The Mankin score of 4 and 8 weeks were 8.19±0.70,11.94±0.90 in AOPPs group,and 0.75±0.53,1.06± 0.73 in sham-operated group,4.25± 1.46、4.50±0.89 in PBS group,respectively.The differences were statistically significant among the three groups.Meanwhile,the protein expression level of matrix metalloproteinases (MMP)-3 on synovial at 4 and 8 weeks in AOPPs group were 1.006±0.080,1.098±0.088;0.065±0.006,0.053±0.011 in sham-operated group;and 0.552±0.024,0.839±0.084 in PBS group,respectively.The proteiu expression level of MMP-13 on synovial at 4 and 8 weeks in AOPPs group were 0.966±0.080,1.621 ±0.041;0.101±0.022,0.367±0.033 in sham-operated group;and 0.564±0.030,1.322±0.085 in PBS group,respectively.The differences were statistically significant among the three groups at two times.Conclusion AOPPs participate in the occurrence and development of artieular cartilage by upregulating the protein expression of MMP-3 and MMP-13 on synovial.

Objective To identify the reliable reference genes for gene expression analysis of the pericarp and seed of Amomum villosum Lour. by using real-time fluorescence quantitative polymerase chain reaction ( qRT-PCR). Methods Using the fruits ( separated into peels and seeds) of A. villosum at three different developmental periods as the experimental material, 5 candidate reference genes (β-actin, EF-1α, GAPDH, PGK, TUA) with steady expression were screened out by the high throughout sequencing of transcriptome and expression profile data. The qRT-PCR technique was applied to study the expression levels of 5 candidate reference genes in different samples. The stability of the candidate reference genes were evaluated by GeNorm and NormFinder software. Results The 5 reference genes had different stabilities in the pericarp and seed of A. villosum Lour. at different development periods . The order of the steadiness of reference genes showed by GeNorm was EF-1α = TUA>PGK>GAPDH>β-actin. The results of NormFinder revealed that EF-1α was the most stable, followed by TUA, and the order of the other three genes was as same as the results of GeNorm. Conclusion EF-1αand TUA could be used as double reference genes for the normalization of gene expression in A. villosum fruits at different developmental periods by using qRT-PCR.

Artificial intelligence (AI) has been widely used in all walks of life, including healthcare, and has shown great application value in the auxiliary diagnosis of pulmonary nodules in the medical field. In the face of a large amount of lung imaging data, clinicians use AI tools to identify lesions more quickly and accurately, improving work efficiency, but there are still many problems in this field, such as the high false positive rate of recognition, and the difficulty in identifying special types of nodules. Researchers and clinicians are actively developing and using AI tools to promote their continuous evolution and make them better serve human health. This article reviews the clinical application and research progress of AI-assisted diagnosis of pulmonary nodules.

Objective: Establish a murine model for hyperuricemia (HU) and periodontitis to explore whether there is correlation between them and provide a basis for periodontal treatment. Methods: Fourteen male KM mice were divided into 2 groups; the HU group (n=7) was fed food supplemented with potassium oxonate and uric acid, the NC group (n=7) was fed standard food, and the induction period was 35 days. On the 25th day, the molars on one side were ligated to induce periodontitis (P side), while the opposite was true for the control (C side). Baseline and terminal serum uric acid (UA) levels were detected, and alveolar bone resorption was analyzed by micro-CT. Results: The serum UA level of HU mice was (112.94 ± 26.82 )mol/L, that of the NC group was (72.21 ± 19.95) μmol/L, and the difference in UA level was statistically significant (P < 0.05). The P side bone volume fractions of the HU and NC groups were( 29.01 ± 11.09)% and (29.56 ± 15.27)%, respectively, which were not significantly different (t=-0.072, P=0.944). The P side bone mineral densities of the HU and NC groups were(0.53 ± 0.16) g/cm3 and (0.52 ± 0.14) g/cm3, respectively, which were not significantly different (t=0.038, P=0.970). Additionally, there was no correlation between HU or serum UA and alveolar bone resorption (P > 0.05). Conclusion This research established a murine model for HU and periodontitis, but based on micro-CT analysis of alveolar bone, no relationship between HU or UA levels and periodontitis was found.