Objective To evaluate the applicated value of color Doppler ultrasonography (CDUS) and CR molybdenum target in the diagnosis of breast nodules.Methods Comparative analysis of 87 patients with breast nodules diagnosed by CDUS and CR molybdenum target were contrasted with postoperative pathology.Results 47 cases of 78 patients with breast nodules were benign lesions.39 cases were correctly diagnosed by CR molybdenum target,41 cases were correctly diagnosed by CDUS,and 44 cases were correctly diagnosed by CR molybdenum target and CDUS.Contrasted with postoperative pathology,the accuracy rates of breast disease diagnosed were 82.5％,75.0％ and 95.0％ diagnosed by CR molybdenum target,CDUS,CR molybdenum target and CDUS.Conclusion There is no significant statistical difference between CR molybdenum target and CDUS in the diagnosis of benign breast nodules.The accuracy rate of breast disease diagnosed by CR molybdenum target and CDUS is better than that diagnosed by CR molybdenum target or CDUS only.The two co-diagnosis are benefit to raise the accuracy rate of breast nodules.

In 2022, the European Association for the Study of the Liver issued Clinical practice guidelines on sclerosing cholangitis. With reference to the 2017 edition of Role of endoscopy in primary sclerosing cholangitis: European Society of Gastrointestinal Endoscopy (ESGE) and European Association for the Study of the Liver (EASL) Clinical Guideline (2017) and in comparison to the corresponding contents in Guidelines on the diagnosis and management of primary sclerosing cholangitis (2021) issued by Chinese Society of Hepatology, Chinese Medical Association, in 2021, this article summarizes the updates in diagnosis, treatment, monitoring, and management of special populations and analyzes the basis for updated recommendations and their guiding significance in optimizing the clinical management of primary sclerosing cholangitis (PSC). The comparative analysis shows that the new version of the guidelines is similar to the Chinese guidelines in terms of diagnosis, treatment, and follow-up, and it is worth learning from the technical details such as the recommended dose of ursodeoxycholic acid and long-term follow-up plan. Since PSC is a chronic refractory disease, the drugs recommended by current guidelines cannot delay or reverse disease progression, and there is still a lack of consensus statements on immunotherapy and screening protocols for end-stage complications, which might be the directions for further research.

β-Catenin plays a critical role in cartilage formation and development. To further understand the role of β-catenin in osteoarthritis (OA) development in temporomandibular joint (TMJ), we have generated β-catenin conditional activation mice (β-cat(ex3) ) by breeding Agc1-CreER mice with β-catenin mice. Results of histologic analysis showed the progressive TMJ defects in 3- and 6-month-old β-cat(ex3) mice (tamoxifen induction was performed at 2 weeks of age), including decreased chondrocyte numbers in the superficial layer associated with less Alcian blue staining, increased numbers of hypertrophic chondrocytes in deep layers, and rough articular surface. Compared to the TMJ phenotype of β-cat(ex3) mice, β-cat(ex3) mice showed much severe morphological defects in the superficial layer of TMJ. This may reflect that Agc1-CreER mice could efficiently target cells in the superficial layer of TMJ. Results of immunostaining showed significantly increased expression of MMP13, Col-X, Adamts4, and Adamts5 in TMJ of β-cat(ex3) mice. Results of proliferating cell nuclear antigen (PCNA), Ki67, and terminal deoxinucleotidyl transferase-mediated dUTP-fluorescein nick end labeling (TUNEL) staining further demonstrated that cell proliferation was decreased and cell apoptosis was increased in condylar cartilage of β-cat(ex3) mice. Our findings indicate that abnormal upregulation of β-catenin in TMJ leads to defects assembling to OA-like phenotype, further demonstrating that β-catenin plays a critical role in TMJ pathogenesis.
Aggrecans ; metabolism ; Animals ; Apoptosis ; Cartilage, Articular ; metabolism ; Cell Differentiation ; Cell Proliferation ; Cells, Cultured ; Disease Models, Animal ; In Situ Nick-End Labeling ; Mice ; Osteoarthritis ; metabolism ; Phenotype ; Signal Transduction ; Surface Properties ; Temporomandibular Joint ; metabolism ; beta Catenin ; metabolism