Results 101 to 110 of about 153,280 (319)

meso‐Free Porphyrinoids

Asian Journal of Organic Chemistry, EarlyView.
meso‐Free porphyrinoids are recognized as a versatile platform for further functionalization and oligomerization. The synthesis and characteristic features of such meso‐free porphyrinoids are reviewed. Abstract meso‐Unsubstituted (meso‐free) porphyrins have been an effective platform for creating versatile peripherally functionalized porphyrins and ...
Takayuki Tanaka, Osamu Iwanaga, Atsuhiro Osuka   +2 more
wiley   +1 more source

Off-resonant coherent electron transport over three nanometers in multi-heme protein bioelectronic junctions [PDF]

arXiv, 2020
Multi-heme cytochromes (MHC) are fascinating proteins used by bacterial organisms to shuttle electrons within and between their cells. When placed in a solid state electronic junction, they support temperature-independent currents over several nanometers that are three orders of magnitude higher compared to other redox proteins of comparable size.
arxiv  

Astaxanthin ameliorates benzalkonium chloride–induced dry eye disease through suppressing inflammation and oxidative stress via Keap1‐Nrf2/HO‐1 signaling pathways

Animal Models and Experimental Medicine, EarlyView.
The flowchart of this research. Abstract Background Dry eye disease (DED) predominantly results from elevated tear film osmolarity, which can not only cause ocular inconvenience but may lead to visual impairments, severely compromising patient well‐being and exerting substantial economic burdens as well.
Ziyu Liu, Yaqiong Li, Jiayu Bao, Siyuan Li, Ya Wen, Peng Zhang, Jun Feng, Yinghui Wang, Lei Tian, Ying Jie   +9 more
wiley   +1 more source

Predictive biomarkers for 5‐ALA‐PDT can lead to personalized treatments and overcome tumor‐specific resistances

Cancer Reports, Volume 5, Issue 12, December 2022., 2022
Abstract Background Photodynamic therapy (PDT) is a minimally invasive, clinically approved therapy with numerous advantages over other mainstream cancer therapies. 5‐aminolevulinic acid (5‐ALA)‐PDT is of particular interest, as it uses the photosensitiser PpIX, naturally produced in the heme pathway, following 5‐ALA administration.
Maria Mastrangelopoulou, Mantas Grigalavicius, Tine H. Raabe, Ellen Skarpen, Petras Juzenas, Qian Peng, Kristian Berg, Theodossis A. Theodossiou   +7 more
wiley   +1 more source

Heme carrier protein 1 transports heme and is involved in heme-Fe metabolism

American Journal of Physiology-Cell Physiology, 2012
Heme-Fe is an important source of dietary iron in humans; however, the mechanism for heme-Fe uptake by enterocytes is poorly understood. Heme carrier protein 1 (HCP1) was originally identified as mediating heme-Fe transport although it later emerged that it was a folate transporter.
Le Blanc, Solange, Garrick, Michael D., Arredondo, Miguel   +2 more
openaire   +5 more sources

Molecular and cellular paradigms of multidrug resistance in cancer

Cancer Reports, Volume 5, Issue 12, December 2022., 2022
Abstract Background The acquisition of resistance to chemotherapy is a major hurdle in the successful application of cancer therapy. Several anticancer approaches, including chemotherapies, radiotherapy, surgery and targeted therapies are being employed for the treatment of cancer.
Foram U. Vaidya, Abu Sufiyan Chhipa, Vinita Mishra, Vishal Kumar Gupta, Shiv Govind Rawat, Ajay Kumar, Chandramani Pathak   +6 more
wiley   +1 more source

Scavenging of Labile Heme by Hemopexin Is a Key Checkpoint in Cancer Growth and Metastases

Cell Reports, 2020
Summary: Hemopexin (Hx) is a scavenger of labile heme. Herein, we present data defining the role of tumor stroma-expressed Hx in suppressing cancer progression.
Giacomo Canesin, Annalisa Di Ruscio, Mailin Li, Simone Ummarino, Andreas Hedblom, Reeham Choudhury, Agnieszka Krzyzanowska, Eva Csizmadia, Macarena Palominos, Anna Stiehm, Alexander Ebralidze, Shao-Yong Chen, Mahmoud A. Bassal, Ping Zhao, Emanuela Tolosano, Laurence Hurley, Anders Bjartell, Daniel G. Tenen, Barbara Wegiel   +18 more
doaj  

Deep Kinship Verification via Appearance-shape Joint Prediction and Adaptation-based Approach [PDF]

arXiv, 2019
Kinship verification aims to identify the kin relation between two given face images. It is a very challenging problem due to the lack of training data and facial similarity variations between kinship pairs. In this work, we build a novel appearance and shape based deep learning pipeline.
arxiv  

Simulation of Heme using DFT+U: a step toward accurate spin-state energetics [PDF]

arXiv, 2007
We investigate the DFT+U approach as a viable solution to describe the low-lying states of ligated and unligated iron heme complexes. Besides their central role in organometallic chemistry, these compounds represent a paradigmatic case where LDA, GGA, and common hybrid functionals fail to reproduce the experimental magnetic splittings.
arxiv  

Investigating electron conductivity regimes in the bacterial cytochrome wire OmcS [PDF]

arXiv
The anaerobic bacterium \textit{Geobacter sulfurreducens} produces extracellular, electronically conductive cytochrome polymer wires that are conductive over micron length scales. Structure models from cryo-electron microscopy data show OmcS wires form a linear chain of hemes along the protein wire axis, which is proposed as the structural basis ...
arxiv