Short-chain fatty acids (SCFAs) are the main metabolites produced by bacterial fermentation of dietary fibre in the gastrointestinal tract. The absorption of SCFAs is mediated by substrate transporters, such as monocarboxylate transporter 1 and sodium-coupled monocarboxylate transporter 1, which promote cellular metabolism. An increasing number of studies have implicated metabolites produced by microorganisms as crucial executors of diet-based microbial influence on the host.
View Article and Find Full Text PDFThe superfamily Blaberoidea is a highly species-rich group of cockroaches. High-level blaberoidean phylogenetics are still under debate owing to variable taxon sampling and incongruence between mitochondrial and nuclear evolution, as well as different methods used in various phylogenetic studies. We here present a phylogenetic analysis of Blaberoidea based on a dataset combining the mitochondrial genome with two nuclear markers from representatives of all recognized families within the superfamily.
View Article and Find Full Text PDFCockroaches, an ancient and diverse group of insects on earth that originated in the Carboniferous, displays a wide array of morphology or biology diversity. The spermatheca is an organ of the insect reproductive system; the diversity of spermathecae might be the adaption to different mating and sperm storage strategies. Yet a consensus about the phylogenetic relationships among the main lineages of Blattodea and the evolution of spermatheca has not been reached until now.
View Article and Find Full Text PDFObjectives: Endovascular treatment (EVT) is an alternative method used to treat isolated dissection of the celiac artery (IDCA). However, only a few mid-term results have been reported. This study aimed to analyze and compare the outcomes of endovascular and non-operative therapies for IDCA.
View Article and Find Full Text PDFAbdominal irradiation (IR) may destroy the intestinal mucosal barrier, leading to severe intestinal infection and multiple organ dysfunction syndromes. The role of intestinal microbiota in the development of IR-induced intestinal injury remains largely unknown. Herein, we reported that abdominal IR altered the composition of the microbiota and reduced the abundance and diversity of the gut microbiome.
View Article and Find Full Text PDFNearly 450 specimens were collected from 27 locations in China and their morphology was examined. Then 68 sequences were obtained and used to carry out phylogenetic analyses as well as species delimitation analyses using General Mixed Yule Coalescent (GMYC), Automatic Barcode Gap Discovery (ABGD), and Poisson Tree Processes (bPTP). GMYC analysis resulted in 21 molecular operational taxonomic units (MOTUs) (confidence interval: 20-22), which was completely consistent with the result of the bPTP.
View Article and Find Full Text PDFThe genus Uvarov, 1939 (Blaberidae, Epilamprinae) is recorded for the first time from Hainan Island, China. Three new species, Wang & Wang, , Wang & Wang, , and Wang & Wang, , are described based on morphological data and a molecular analysis using Automatic Barcode Gap Discovery (ABGD). Additional barcode data of blaberid species, including these three new species, are provided to facilitate future species identification.
View Article and Find Full Text PDFBackground: The AMP-activated protein kinase (AMPK) plays critical roles in growth regulation and metabolism reprogramming. AMPK activation protects cells against apoptosis from injury in different cell and animal models. However, its function in necroptosis remains largely unclear.
View Article and Find Full Text PDFHead and neck squamous cell carcinoma (HNSCC) is the sixth most common cancer worldwide. Mutations of TP53 may reach 70% - 85% in HNSCC patients without human papillomavirus (HPV) infection. Recurrence rate remains particularly high for HNSCC patients with mutations in the TP53 gene although patients are responsive to surgery, irradiation, and chemotherapy early in the treatment.
View Article and Find Full Text PDFTP53 mutations frequently occur in head and neck squamous cell carcinoma (HNSCC) patients without human papillomavirus infection. The recurrence rate for these patients is distinctly high. It has been actively explored to identify agents that target TP53 mutations and restore wild-type (WT) TP53 activities in HNSCC.
View Article and Find Full Text PDFLiver kinase B1 (LKB1) functions as a tumor suppressor encoded by STK11, a gene that mutated in Peutz-Jeghers syndrome and in sporadic cancers. Previous studies showed that LKB1 participates in IR- and ROS-induced DNA damage response (DDR). However, the impact of LKB1 mutations on targeted cancer therapy remains unknown.
View Article and Find Full Text PDFProc Natl Acad Sci U S A
August 2016
High-risk human papillomaviruses (HPVs) are causative agents of anogenital cancers and a fraction of head and neck cancers. The mechanisms involved in the progression of HPV neoplasias to cancers remain largely unknown. Here, we report that O-linked GlcNAcylation (O-GlcNAc) and O-GlcNAc transferase (OGT) were markedly increased in HPV-caused cervical neoplasms relative to normal cervix, whereas O-GlcNAcase (OGA) levels were not altered.
View Article and Find Full Text PDFUnlabelled: Objective : To assess how erectile dysfunction (ED) affects the quality of life in male kidney transplant recipients.
Methods: We randomly selected 150 cases of married male kidney transplant recipients. Using the International Index of Erectile Function (IIEF-5) Questionnaire, we divided our research subjects into ED group (n=63) and non-ED group (n = 87).
Cervical cancer is one of the most common gynecologic malignancies and poses a serious health problem worldwide. Identification and characterization of cervical cancer stem cells may facilitate the development of novel strategies for the treatment of advanced and metastatic cervical cancer. Breast cancer-resistance protein (Bcrp1)-positive cells were selected from a population of parent HeLa cells using flow cytometry.
View Article and Find Full Text PDFZhonghua Bing Li Xue Za Zhi
May 2008
Objective: To investigate the telomerase activity and to document biological behaviors of HeLa cells upon treatment with specific PI3K/AKT signaling pathway inhibitor, LY294002.
Methods: CCK-8 assay was used to determine IC50 of LY294002. The expressions of total AKT and phosphorylation AKT (P-AKT) were determined using Western blot.
Hua Xi Kou Qiang Yi Xue Za Zhi
June 2008
Objective: To study the effect and mechanism of salidroside on salivary adenoid cystic carcinoma (SACC-2) cells in vitro.
Methods: To detect the effect of salidroside on SACC-2 cells growth with CCK-8 kit, the growth curve of cells were drawn. To detect the expression of cysteine proteinase (Caspase 3 and Caspase 8) and proliferating cell nuclear antigen (PCNA) in SACC-2 cells, immunohistochemistry staining was used.
Zhonghua Bing Li Xue Za Zhi
March 2007
Aim: To investigate the pathological features of the prostate biopsy through mass screening for prostate cancer in a Chinese cohort and their association with serum prostate specific antigen (PSA).
Methods: A total of 12027 Chinese men in Changchun were screened for prostate cancer by means of the serum total prostate specific antigen tPSA test (by Elisa assay). Transrectal ultrasound-guided systematic six-sextant biopsies were performed on those whose serum tPSA value was > 4.
Objective: To investigate the pathological features of the prostate biopsy through mass screening for prostate cancer in Chinese cohort and their relationships with serum prostate specific antigen (PSA).
Methods: ELISA was used to measured the serum PSA in 12 027 Chinese men aged 50 and over in Changchun, Jilin Province. Transrectal ultrasound guided six-sextant biopsy was performed on 137 cases with the serum PSA value > 4.