Results 91 to 100 of about 45,774 (276)
A class of totally positive P-matrices whose inverses are M-matrices
, 2007 In this work we introduce some technical conditions to prove that a P-matrix has an inverse M-matrix.
Gassó, M., Torregrosa, Juan R.
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MITF maintains genome stability in nonmelanocyte lineages
Molecular Oncology, EarlyView.MITF is essential for melanocyte survival and acts as an oncogene in 10%–20% of melanomas. We show that MITF depletion causes genome instability in nonmelanocytic cells, leading to LATS2‐mediated P53 activation, cell cycle arrest, and apoptosis. This study highlights the role of MITF as a genome maintenance factor beyond the melanocyte lineage. Created
Drifa H. Gudmundsdottir +13 more
wiley +1 more source
Accurate computation of the Moore-Penrose inverse of strictly totally positive matrices [PDF]
, 2019 The computation of the Moore-Penrose inverse of structured strictly totally positive matrices is addressed. Since these matrices are usually very ill-conditioned, standard algorithms fail to provide accurate results.
Marco García, Ana +1 more
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Oncogenic DMTF1β promotes cancer cell motility by regulating autophagy through ULK1 stabilization
Molecular Oncology, EarlyView.In the current study, we demonstrate that the oncogene DMTF1β regulates ULK1 stability by reducing its proteasomal degradation in cancer cells. This stabilization enables ULK1 to induce autophagy, which in turn facilitates cancer cell migration. Consequently, reduced DMTF1β levels lead to decreased autophagy and impaired cancer cell migration.
Jun Xu +13 more
wiley +1 more source
Conditions for a totally positive completion in the case of a symmetrically placed cycle
, 2014 In earlier work, the labelled graphs G for which every combinatorially symmetric totally nonnegative matrix, the graph of whose specified entries is G, has a totally nonnegative completion were identified.
Johnson, Charles R, Kroschel, Brenda K
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Totally positive kernels, Polya frequency functions, and their transforms
, 2020 The composition operators preserving total non-negativity and total positivity for various classes of kernels are classified, following three themes. Letting a function act by post composition on kernels with arbitrary domains, it is shown that such a ...
Putinar, Mihai +3 more
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Tumor B‐cell infiltration in platinum‐treated advanced muscle‐invasive urothelial carcinoma
Molecular Oncology, EarlyView.Bladder tumors with higher pretreatment memory B‐cell infiltration were linked to longer survival after cisplatin chemotherapy, but not carboplatin. These tumors also showed more organized immune structures (tertiary lymphoid structures) and a shared pro‐inflammatory B‐cell‐rich community, suggesting that memory B cells may help identify patients most ...
Konrad Stawiski +10 more
wiley +1 more source
Intraventricular solitary fibrous tumor
Chinese Journal of Contemporary Neurology and Neurosurgery, 2015 Background Solitary fibrous tumor (SFT) is a mesenchymal neoplasm of specialized fibroblastic lineage, which frequently occurs in the subcutaneous and deep soft tissue of pleura,mediastinum, head and neck, extremities and trunk.
Yan-yang CHEN +3 more
doaj
Gut PathogensBackground Antimicrobial resistance (AMR) is one of the most pressing global public health challenges; in particular, the rapid dissemination of carbapenem-resistant Enterobacterales (CRE) is emerging as a significant concern worldwide. Flies, serving as
Jialiang Xu +11 more
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Rectangular submatrices of inverse M-matrices and the decomposition of a positive matrix as a sum
, 2005 We characterize those square partial matrices whose specified entries constitute a rectangular submatrix that may be completed to an inverse M-matrix. Together with the notion of an interior inverse M-matrix, this is used to show that any positive matrix
Johnson, C.R., Olesky, D.D.
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