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Paracellular barriers play an important role in the pathogenesis of Inflammatory bowel disease (IBD) and maintain gut homeostasis. N-myc downstream-regulated gene 2 (NDRG2) has been reported to be a tumour suppressor gene and to inhibit colorectal cancer metastasis. However, whether NDRG2 affects colitis initiation and colitis-associated colorectal cancer is unclear.
Intestine-specific Ndrg2 deficiency mice (Ndrg2
) were subjected to DSS- or TNBS-induced colitis, and AOM-DSS-induced colitis-associated tumour. HT29 cells, Caco2 cells, primary intestinal epithelial cells (IECs) from Ndrg2
mice, mouse embryo fibroblasts (MEFs) from systemic Ndrg2 knockout mice, HEK293 cells and human UC and DC specimens were used to investigate NDRG2 function in colitis and colitis-associated tumour.
Ndrg2 loss led to adherens junction (AJ) structure destruction via E-cadherin expression attenuation, resulting in diminished epithelial barrier function and increased intestinal epithelial permeability. Mechanistically, NDL2017Z11), Fund for Distinguished Young Scholars of ShaanXi province (2019JC-22).Melanocytes are neuroectoderm-derived pigment-producing cells with highly polarized dendritic morphology. They protect the skin against ultraviolet radiation by providing melanin to neighbouring keratinocytes. However, the mechanisms underlying melanocyte polarization and its relevance for diseases remain mostly elusive. Numerous studies have instead revealed roles for polarity regulators in other neuroectoderm-derived lineages including different neuronal cell types. Considering the shared ontogeny and morphological similarities, these lineages may be used as reference models for the exploration of melanocyte polarity, for example, regarding dendrite formation, spine morphogenesis and polarized organelle transport. In this review, we summarize and compare the latest progress in understanding polarity regulation in neuronal cells and melanocytes and project key open questions for future work.Recently, a three-dimensional construct model for complex experiential Selfhood has been proposed (Fingelkurts, Fingelkurts, & Kallio-Tamminen, 2016b,c). According to this model, three specific subnets (or modules) of the brain self-referential network (SRN) are responsible for the manifestation of three aspects/features of the subjective sense of Selfhood. Follow up multiple studies established a tight relation between alterations in the functional integrity of the triad of SRN modules and related to them three aspects/features of the sense of self; however, the causality of this relation is yet to be shown. In this article we approached the question of causality by exploring functional integrity within the three SRN modules that are thought to underlie the three phenomenal components of Selfhood while these components were manipulated mentally by experienced meditators in a controlled and independent manner. Participants were requested, in a block-randomised manner, to mentally induce states representing either increased (up-regulation) or decreased (down-regulation) sense of (a) witnessing agency ("Self"), or (b) body representational-emotional agency ("Me"), or (c) reflective/narrative agency ("I"), while their brain activity was recorded by an electroencephalogram (EEG). This EEG-data was complemented by first-person phenomenological reports and standardised questionnaires which focused on subjective contents of three aspects of Selfhood. The results of the study strengthen the case for a direct causative relationship between three phenomenological aspects of Selfhood and related to them three modules of the brain SRN. Furthermore, the putative integrative model of the dynamic interrelations among three modules of the SRN has been proposed.
The clinical behavior and prognosis of small multifocal and microinvasive breast cancers are still debated together with the best method of assessing tumor size in multiple invasive carcinomas. This study evaluates the clinico-pathological features of single and multiple breast cancers up to 0.5cm in order to evaluate the rate of recurrences.
We retrospectively analyzed 170 node-negative patients consecutively treated at European Institute of Oncology from 2001 to 2006. We divided them into Group I (pT1mi) and Group II (pT1a) furtherly divided in subgroups, according to focality and aggregate diameter. selleck chemicals llc For each group we assessed tumor size, (multi)focality, extensive in situ component (EIC), histology, grade, peritumoral vascular invasion (PVI), hormonal receptor status (HR), HER-2 expression, Ki67 expression.
We observed that the frequency of local recurrences and distant metastases in group I was higher among those with a single focus; whereas in group II, it was higher in multifocal carcinomas. Then, by comparing the two groups, the prognosis was better in multiple pT1mi than in similarly sized unifocal pT1a.
Microinvasive carcinomas are associated with a good prognosis, even if they seem to have a more aggressive intrinsic biological behavior. Multifocality seems to be correlated with a worse prognosis in case of invasive carcinomas pT1a. In case of microinvasive carcinomas, by contrast, multifocality per se does not seem to affect the recurrence rate.
Microinvasive carcinomas are associated with a good prognosis, even if they seem to have a more aggressive intrinsic biological behavior. Multifocality seems to be correlated with a worse prognosis in case of invasive carcinomas pT1a. In case of microinvasive carcinomas, by contrast, multifocality per se does not seem to affect the recurrence rate.Seagrasses represent high primary productivity and provide important ecosystem services to the marine environment. Seagrass-associated microbial communities are playing essential ecological functional roles in biogeochemical cycles. However, little is known about the effect of seagrass vegetation on microbial communities in sediment. In the present study, the sediment cores of seagrass bed (dominated by Zostera japonica and Zostera marine) and degradation area in Swan Lake (China) were sampled; then, biogeochemical parameters were analyzed, and microbial community composition was investigated by using high-throughput sequencing of the 16S rRNA gene. The results showed that the presence of seagrass could lead to a decrease in the richness and diversity of the microbial community. In the vertical direction, a pronounced shift from Proteobacteria-dominated upper layers to Chloroflexi and Crenarchaeota-dominated deep layers in all sediment cores were observed. Besides, Bathyarchaeia is more abundant at degradation area, while Vibrionaceae, Sulfurovum and Lokiarchaeial overrepresent at the seagrass bed area.
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