Background: Checkpoint kinase 2 (CHEK2) and its regulated tumor protein p53 (TP53) have been correlated with osteogenic differentiation of osteoblast-like cells. Based on bioinformatics predictions, this study aims to investigate the effect of the CHEK2/TP53 axis on osteogenic differentiation of periodontal ligament stem cells (PDLSCs) and to explore the regulatory mechanism.
Methods: PDLSCs were isolated from human impacted wisdom teeth, and they were cultured in normal medium (NM) or osteogenic medium (OM).
Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
December 2023
Objective: To investigate the effectiveness of finger reconstruction using nail flap anastomosing the nerve branch of the first toe nail bed.
Methods: Between January 2016 and December 2022, 18 patients (18 fingers) with thumb or finger nail bed defects were admitted. There were 12 males and 6 females, with an average age of 32 years (range, 19-42 years).
Fusion expression is widely employed to enhance the solubility of recombinant proteins. However, removal of the fusion tag is often required due to its potential impact on the structure and activity of passenger proteins. Tobacco etch virus (TEV) protease is widely used for this purpose due to its stringent sequence recognition.
View Article and Find Full Text PDFNonaqueous Pickering emulsions exhibit promising applications in many industrial areas but have been relatively less studied in the past. In this study, -hexane-in-DMF nonaqueous Pickering emulsions stabilized by core cross-linked copolymer worms with mixed shells are demonstrated for the first time. Core cross-linked copolymer worms with mixed shells were prepared by seeded reversible addition-fragmentation chain transfer (RAFT) quasi-solution polymerization.
View Article and Find Full Text PDFThis work was aimed to establish a quality control method for evaluating the effects on glucose and lipids of the fruiting body of Isaria cicadae Miquel from strain Ic-17-7 (Ic-17-7fb) using a rat model of type 2 diabetes (T2DM). Random amplified polymorphic DNA, sequence-characterized amplified region, and high-performance liquid chromatography (HPLC) were used for the quality control of Ic-17-7fb. The pharmacological effects on streptozocin (STZ)-induced high fat diet (HFD)-fed Albino Wistar rats were evaluated.
View Article and Find Full Text PDFBackground: This investigation examined the effects of the microRNA miR-34c-5p on the proliferation, migration, and invasion of oral squamous cell carcinoma (OSCC) and the mechanisms involved.
Methods: The Gene Expression Omnibus (GEO) database was used to filter the chips, and the GEO2R software (https://www.ncbi.
Background: The aim of this study was at investigating the association between major depressive disorder (MDD) and periodontitis based on crosstalk genes and neuropeptides.
Methods: Datasets for periodontitis (GSE10334, GSE16134, and GSE23586) and MDD (GSE38206 and GSE39653) were downloaded from GEO. Following batch correction, a differential expression analysis was applied (MDD: ∣log2FC | >0 and periodontitis ∣log2FC | ≥0.
Objective: The objective of the present paper was to investigate the value of obturator oblique and pubic ramus inlet views in guiding anterior column acetabular screw insertion.
Methods: We collected pelvic CT scans at the diagnostic imaging center of our hospital between 2017 and 2019. Virtual three-dimensional (3D) models of the pelvis were created based on the CT scans.
Int J Pediatr Otorhinolaryngol
April 2021
Objective: The research on the etiology of nonsyndromic cleft lip with or without cleft palate(NSCL/P) is challenging, and DNA methylation has an impact on the formation of cleft lip and palate.
Subjects: In this study, one of a pair of monozygotic twins (T1) had nonsyndromic cleft lip (NSCL), and one of a pair of monozygotic twins (T2) had nonsyndromic cleft lip and palate (NSCLP). We determined the methylation profiles of more than 850,000 CpGs in the DNA of the blood samples from the two pairs of monozygotic twins.
Background: Nausea and vomiting are among the most common and distressing side effects of chemotherapy. Difference in views about the effectiveness of auricular acupuncture (AA) versus electroacupuncture (EA) of chemotherapy-induced nausea and vomiting (CINV) lies at the heart of the debate. The aim of this study is to compare the antiemetic efficacy and safety of AA and EA for CINV.
View Article and Find Full Text PDFNonsyndromic cleft lip with or without cleft palate (NSCLP) has been recognized as a condition resulting from a combination of environmental and genetic factors. Studies have demonstrated that microRNAs (miRNAs) are involved in embryonic development. However, few studies have focused on screening potential target miRNAs in human NSCLP tissue.
View Article and Find Full Text PDFPurpose: The objective of this study was to explore the prognostic value of in situ memory T cells and patterns of invasion (POI) in early stage oral squamous cell carcinoma (OSCC).
Methods: One hundred fifty-seven patients with early stage (cT1T2N0) OSCC were identified from a pre-existing database of patients with oral cancer and were classified by POI according to hematoxylin-eosin staining. We examined the impact of the immunohistochemical expression of CD45RO in OSCC.
To identify the prognostic value of c-jun, c-fos, and p53 in oral cancer, we examined the impact of immunohistochemical expression of these markers on tumor progression in 157 oral squamous cell carcinoma (OSCC). We found that c-jun or c-fos was significantly associated with lymph node metastasis, and coexpression of c-jun/c-fos, or c-jun/c-fos/p53 were significantly associated with lymph node metastasis, poor differentiation and clinical stage. The coexpression of c-jun/c-fos/p53 was identified as independent prognostic factors for overall survival.
View Article and Find Full Text PDFThe correct folding of a protein is a pre-requirement for its proper posttranslational modification. The Escherichia coli Sec pathway, in which preproteins, in an unfolded, translocation-competent state, are rapidly secreted across the cytoplasmic membrane, is commonly assumed to be unfavorable for their modification in the cytosol. Whether posttranslationally modified recombinant preproteins can be efficiently transported via the Sec pathway, however, remains unclear.
View Article and Find Full Text PDFTobacco etch virus (TEV) protease is widely used to remove tags from recombinant fusion proteins because of its stringent sequence specificity. It is generally accepted that the high concentrations of salts or other special agents in most protein affinity chromatography buffers can affect enzyme activity, including that of TEV protease. Consequently, tedious desalination or the substitution of standard TEV reaction buffer for elution buffer are often needed to ensure TEV protease activity when removing fusion tags after purifying target proteins using affinity chromatography.
View Article and Find Full Text PDFZhonghua Liu Xing Bing Xue Za Zhi
September 2004
Objective: To investigate the relationship between tobacco smoking, drinking and p53 alteration in esophageal carcinoma.
Methods: Literature on the relationship between p53 alteration in esophageal carcinoma and tobacco smoking, drinking through Meta-analysis were reviewed.
Results: In 14 selected papers related to tobacco smoking, pooled odds ratio (OR) of tobacco smoking with P53 overexpression and p53 alteration were 1.
World J Gastroenterol
April 2004
Aim: To analyse the role of genetic susceptibility and environmental factors in the process of esophageal cancer (EC) formation in Xi'an, China.
Methods: A hospital based case-control study, combined with molecular epidemiological method, was carried out. A total of 127 EC cases and 101 controls were interviewed with questionnaires containing demographic items, habit of tobacco smoking, alcohol drinking, and family history of EC.
Zhonghua Yu Fang Yi Xue Za Zhi
July 2002
Objective: To study the molecular mechanism of microcystin (MC) induced liver tumorigenesis in rats.
Methods: The two-stage-medium-term tumorigenesis theory was applied to establish the animal model, and the effect of MC in liver tumor formation was evaluated by the Albert gamma-GT methods, and then, the immunohistochemical technique and image analysis were used to study the expression of the bcl-2 and bax genes during tumorigenesis.
Results: (1) MC enhanced the formation of gamma-GT foci in liver (100%), which was significantly higher than the diethylnitrosamine (DEN) control group (22.
World J Gastroenterol
February 2002
Aim: To analyze the association of tobacco smoking polymorphism of CYP1A1 (7th exon) and GSTM1 genotype and esophageal cancer(EC) in Xi'an.
Methods: A hospital based case-control study, with molecular epidemiological method, was carried out. Polymorphism of CYP1A1 and GSTM1 of samples from 127 EC cases and 101 controls were detected by PCR method.
World J Gastroenterol
February 1998
AIM:To investigate the risk factors of esophageal cancer (EC) in urban areas of Xi'an and to determine the association between overexpression of P53 and these risk factors.METHODS: All cases (89) and controls (97) were permanent residents in urban areas of Xi'an, all cases of primary EC had been histologically confirmed, controls were inpatients with non-cancer and nonsmoking-related disease. Cancer tissues and tissues adjacent to the cancer of 65 cases and 24 available normal esophageal tissues of controls were detected for P53 overexpression by the immunohistochemical method.
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