Double contrast-enhanced ultrasonography improves diagnostic accuracy of T staging compared with multi-detector computed tomography in gastric cancer patients.

Background: Gastric cancer (GC) is the most common malignant tumor and ranks third for cancer-related deaths among the worldwide. The disease poses a serious public health problem in China, ranking fifth for incidence and third for mortality. Knowledge of the invasive depth of the tumor is vital to treatment decisions.

Delta Radiomics Based on Longitudinal Dual-modal Ultrasound Can Early Predict Response to Neoadjuvant Chemotherapy in Breast Cancer Patients.

Rationale And Objectives: To develop a monitoring model using radiomics analysis based on longitudinal B-mode ultrasound (BUS) and shear wave elastography (SWE) to early predict pathological response to neoadjuvant chemotherapy (NAC) in breast cancer patients.

Materials And Methods: In this prospective study, 112 breast cancer patients who received NAC between September 2016 and March 2022 were included. The BUS and SWE data of breast cancer were obtained prior to treatment as well as after two and four cycles of NAC.

Combining conventional ultrasound and sonoelastography to predict axillary status after neoadjuvant chemotherapy for breast cancer.

Objective: To determine the ability of conventional ultrasound (US) combined with shear wave elastography (SWE) to reveal axillary status after neoadjuvant chemotherapy (NAC) in breast cancer patients.

Methods: From September 2016 to December 2021, 201 patients with node-positive breast cancer who underwent NAC were enrolled in this prospective study. Conventional US features of axillary lymph nodes and SWE characteristics of breast lesions after NAC were analyzed.

[Preliminary study of the relationship between tumor like Sjögren's syndrome and malignant lymphoma].

Objective: To investigate the clinical and laboratory characteristics of tumor like Sjögren's syndrome (TLSS) patients and non-tumor like Sjögren's syndrome (NTLSS) and the incidence of lymphoma in patients of Sjögren's syndrome (SS).

Methods: A retrospective analysis was carried out in 199 primary SS (including TLSS) patients who were recruited in Peking University School and Hospital of Stomatology from 1998 to 2010. Clinical and laboratory information were collected.

Molecular behavior of water in TiO2 nano-slits with varying coverages of carbon: a molecular dynamics simulation study.

It is well known that titanium dioxide (TiO(2)) is biocompatible and environmentally friendly. Consequently, TiO(2) is widely applied in many fields, such as implant materials, photocatalysis, pigments, cosmetic additives, etc. Mesoporous TiO(2) finds many industrial applications, because of its high surface area and stable structure.

beta-catenin expression pattern in primary oral squamous cell carcinoma.

Background: Beta-catenin, a 92 kDa protein that binds to the cytoplasmic tail of E-cadherin, has an essential role in intercellular adhesion and signal transduction. Aberrant expression of beta-catenin has been associated with progression and metastasis of various human cancers. The aim of this study was to elucidate the expression pattern of beta-catenin in primary oral squamous cell carcinoma and examine the correlation between beta-catenin expression and tumor differentiation, histological grade and lymph node status as well as its clinical significances.

[Osteoclastic bone destruction and its regulating factors in oral squamous cell carcinoma].

Objective: To investigate the osteoclastic activity in oral squamous cell carcinoma (OSCC) invading the jaws and to observe the expression of RANKL and OPG, the two bone resorption related cytokines, in these cases.

Methods: Twelve cases of OSCC invading the mandible were studied. After pathological diagnosis, operations were done to remove part of the mandible depending upon the X-ray findings.

[Expression of receptor activator of NF-kappa B ligand and osteoprotegerin protein in the giant cell lesions of jaw].

Objective: To detect the expression of RANKL and OPG protein in the giant cell lesions of jaw and to study the mechanism of this lesion.

Methods: RANKL and OPG were detected by immunohistochemistry (SP) in 24 paraffin-embedded and 2 frozen specimens of central giant cell lesion of jaw.

Results: RANKL signals were strongly positive in the vascular epithelial cells.

[Expressions of PDCD5 and p53 in oral leukoplakia and oral squamous cell carcinoma].

Objective: To study the relationship of the expressions of new apoptosis-related gene PDCD5 and p53 in oral normal mucosa, oral leukoplakia and oral squamous cell carcinoma.

Methods: The expressions of PDCD5 and p53 were observed separately in 17 samples of oral normal mucosa, 60 of oral leukoplakia, and 30 of oral squamous cell carcinoma by Immunohistochemical means.

Results: PDCD5 positive rate in oral normal mucosa was 88.

[Enamelin transcriptional expression in developing postnatal rat tooth germ].

Objective: To observe the transcriptional expression of enamelin in developing postnatal rat first mandibular molar germs, for further studies of functions of enamelin in enamel development and mineralization.

Methods: Tissue slices of first mandibular molar germ of rat 1, 3, 7, 10, 14 days after birth were prepared. The enamelin mRNA expression was identified by in situ hybridization.