ELIZA

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324965 occurrences (No.62 in the rank) during 5 years in the PubMed. [no cache] 500 found

299) PCA analysis, followed by MANOVA and regression analyses, revealed significant changes and correlations between Lgr5 and the transit amplifying (TA) cell markers Math1 and Hes1, which are in the secretory cell pathway.

--- ABSTRACT ---

PMID:33957193 DOI:10.1016/j.taap.2021.115561

2021 Toxicology and applied pharmacology

* Arsenic exposure in drinking water reduces Lgr5 and secretory cell marker gene expression in mouse intestines.

- Arsenic is a global health concern that causes toxicity through ingestion of contaminated water and food. In vitro studies suggest that arsenic reduces stem and progenitor cell differentiation. Thus, this study determined if arsenic disrupted intestinal stem cell (ISC) differentiation, thereby altering the number, location, and/or function of intestinal epithelial cells. Adult male C57BL/6 mice were exposed to 0 or 100 ppb sodium arsenite (As^III) through drinking water for 5 weeks. Duodenal sections were collected to assess changes in morphology, proliferation, and cell types. qPCR analysis revealed a 40% reduction in Lgr5 transcripts, an ISC marker, in the arsenic-exposed mice, although there were no changes in the protein expression of Olfm4. Secretory cell-specific transcript markers of Paneth (Defa1), Goblet (Tff3), and secretory transit amplifying (Math1) cells were reduced by 51%, 44%, and 30% respectively, in the arsenic-exposed mice, indicating significant impacts on the Wnt-dependent differentiation pathway. Further, protein levels of phosphorylated β-catenin were reduced in the arsenic-exposed mice, which increased the expression of Wnt-dependent transcripts CD44 and c-myc. PCA analysis, followed by MANOVA and regression analyses, revealed significant changes and correlations between Lgr5 and the transit amplifying (TA) cell markers Math1 and Hes1, which are in the secretory cell pathway. Similar comparisons between Math1 and Defa1 show that terminal differentiation into Paneth cells is also reduced in the arsenic-exposed mice. The data suggests that ISCs are not lost following arsenic exposure, but rather, specific Wnt-dependent progenitor cell formation and terminal differentiation in the small intestine is reduced.

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[frequency of next (right) word to revealed]

(1)198 that	(9)4 increased	(17)2 associations	(25)2 in
(2)58 a	(10)4 several	(18)2 changes	(26)2 lower
(3)26 the	(11)4 significantly	(19)2 eight	(27)2 more
(4)14 an	(12)4 six	(20)2 elevated	(28)2 seven
(5)12 significant	(13)3 distinct	(21)2 enrichment	(29)2 that,
(6)9 by	(14)3 strong	(22)2 five
(7)7 no	(15)3 substantial	(23)2 four
(8)6 to	(16)3 three	(24)2 important

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--- WordNet output for revealed --- Overview of verb reveal The verb reveal has 3 senses (first 2 from tagged texts) 1. (34) uncover, bring out, unveil, reveal -- (make visible; "Summer brings out bright clothes"; "He brings out the best in her") 2. (17) unwrap, disclose, let on, bring out, reveal, discover, expose, divulge, break, give away, let out -- (make known to the public information that was previously known only to a few people or that was meant to be kept a secret; "The auction house would not disclose the price at which the van Gogh had sold"; "The actress won't reveal how old she is"; "bring out the truth"; "he broke the news to her"; "unwrap the evidence in the murder case") 3. reveal -- (disclose directly or through prophets; "God rarely reveal his plans for Mankind") --- WordNet end ---