keyword
MENU ▼
Read by QxMD icon Read
search

Hypoxia inducible factor

keyword
https://www.readbyqxmd.com/read/29656144/short-and-long-term-management-of-cases-of-venom-induced-anaphylaxis-via-is-suboptimal
#1
Ashley Tritt, Sofianne Gabrielli, Sarah Zahabi, Ann Clarke, Jocelyn Moisan, Harley Eisman, Judy Morris, Lea Restivo, Greg Shand, Moshe Ben-Shoshan
BACKGROUND: Venom induced anaphylaxis (VIA) accounts for severe reactions. However, little is known about the short and long-term management of VIA cases. OBJECTIVE: To assess the short and long-term management of VIA. METHODS: Using a national anaphylaxis registry (C-CARE), we identified VIA cases presenting to EDs in Montreal and to emergency medical services(EMS) in Western Quebec over a four-year period. Data were collected on clinical characteristics, triggers, and management...
April 12, 2018: Annals of Allergy, Asthma & Immunology
https://www.readbyqxmd.com/read/29656061/hypoxia-inducible-bidirectional-shrna-expression-vector-delivery-using-pei-chitosan-tba-copolymers-for-colorectal-cancer-gene-therapy
#2
Bita Javan, Fatemeh Atyabi, Majid Shahbazi
AIMS: This investigation was conducted to construct a hypoxia/colorectal dual-specific bidirectional short hairpin RNA (shRNA) expression vector and to transfect it into the colon cancer cell line HT-29 with PEI/chitosan-TBA nanoparticles for the simultaneous knock down of β-catenin and Bcl-2 under hypoxia. MAIN METHODS: To construct a pRNA-bipHRE-CEA vector, the carcinoma embryonic antigen (CEA) promoter designed in two directions and the vascular endothelial growth factor (VEGF) enhancer were inserted between two promoters for hypoxic cancer specific gene expression...
April 12, 2018: Life Sciences
https://www.readbyqxmd.com/read/29655605/physiology-and-pathophysiology-of-renal-erythropoietin-producing-cells
#3
REVIEW
Hong-Mou Shih, Chih-Jen Wu, Shuei-Liong Lin
Anemia is a common complication and contributes to increased morbidity and mortality in chronic kidney disease (CKD) patients. Whereas there has been a significant improvement of understanding the underlying mechanism of erythropoiesis, the treatment of renal anemia is still restricted to erythropoietin (EPO)-stimulating agents. The purpose of this article is to review the physiology of erythropoiesis, functional role of EPO and underlying molecular and cellular basis that regulate EPO production. Regulation of EPO production is at mRNA level...
April 11, 2018: Journal of the Formosan Medical Association, Taiwan Yi Zhi
https://www.readbyqxmd.com/read/29655409/orthodontic-tooth-movement-the-biology-and-clinical-implications
#4
REVIEW
Yina Li, Laura A Jacox, Shannyn H Little, Ching-Chang Ko
Orthodontic tooth movement relies on coordinated tissue resorption and formation in the surrounding bone and periodontal ligament. Tooth loading causes local hypoxia and fluid flow, initiating an aseptic inflammatory cascade culminating in osteoclast resorption in areas of compression and osteoblast deposition in areas of tension. Compression and tension are associated with particular signaling factors, establishing local gradients to regulate remodeling of the bone and periodontal ligament for tooth displacement...
April 2018: Kaohsiung Journal of Medical Sciences
https://www.readbyqxmd.com/read/29652803/hypoxia-supports-epicardial-cell-differentiation-in-vascular-smooth-muscle-cells-through-the-activation-of-the-tgf%C3%AE-pathway
#5
Jiayi Tao, Joey V Barnett, Michiko Watanabe, Diana Ramírez-Bergeron
Epicardium-derived cells (EPDCs) are an important pool of multipotent cardiovascular progenitor cells. Through epithelial-to-mesenchymal-transition (EMT), EPDCs invade the subepicardium and myocardium and further differentiate into several cell types required for coronary vessel formation. We previously showed that epicardial hypoxia inducible factor (HIF) signaling mediates the invasion of vascular precursor cells critical for patterning the coronary vasculature. Here, we examine the regulatory role of hypoxia (1% oxygen) on EPDC differentiation into vascular smooth muscle cells (VSMCs)...
April 13, 2018: Journal of Cardiovascular Development and Disease
https://www.readbyqxmd.com/read/29652636/hif1-mediates-a-switch-in-pyruvate-kinase-isoforms-after-myocardial-infarction
#6
Allison Lesher Williams, Vedbar Khadka, Mingxin Tang, Abigail Avelar, Kathryn J Schunke, Mark Menor, Ralph Victor Shohet
Alternative splicing of RNA is an underexplored area of transcriptional response. We expect that early changes in alternatively spliced genes may be important for responses to cardiac injury. Hypoxia inducible factor 1 (HIF1) is a key transcription factor that rapidly responds to loss of oxygen through alteration of metabolism and angiogenesis. The goal of this study was to investigate the transcriptional response after myocardial infarction (MI) and to identify novel, hypoxia-driven changes, including alternative splicing...
April 13, 2018: Physiological Genomics
https://www.readbyqxmd.com/read/29650693/high-mobility-group-box-1-from-hypoxic-trophoblasts-promotes-endothelial-microparticle-production-and-thrombophilia-in-preeclampsia
#7
Yae Hu, Ruhong Yan, Ce Zhang, Zhichao Zhou, Meng Liu, Can Wang, Hong Zhang, Liang Dong, Tiantian Zhou, Yi Wu, Ningzheng Dong, Qingyu Wu
OBJECTIVE: Thrombophilia is a major complication in preeclampsia, a disease associated with placental hypoxia and trophoblast inflammation. Preeclampsia women are known to have increased circulating microparticles that are procoagulant, but the underlying mechanisms remain unclear. In this study, we sought to understand the mechanism connecting placental hypoxia, circulating microparticles, and thrombophilia. APPROACH AND RESULTS: We analyzed protein markers on plasma microparticles from preeclampsia women and found that the increased circulating microparticles were mostly from endothelial cells...
April 12, 2018: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/29649529/mesoporous-silicate-nanoparticles-3d-nanofibrous-scaffold-mediated-dual-drug-delivery-for-bone-tissue-engineering
#8
Qingqing Yao, Yangxi Liu, Balaranjan Selvaratnam, Ranjit T Koodali, Hongli Sun
Controlled delivery systems play a critical role in the success of bone morphogenetic proteins (i.e., BMP2 and BMP7) for challenged bone repair. Instead of single-drug release that is currently and commonly prevalent, dual-drug delivery strategies are highly desired to achieve effective bone regeneration because natural bone repair process is driven by multiple factors. Particularly, angiogenesis is essential for osteogenesis and requires more than just one factor (e.g., Vascular Endothelial Growth Factor, VEGF)...
April 9, 2018: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/29649411/the-in-vitro-differentiation-of-gdnf-gene-engineered-amniotic-fluid-derived-stem-cells-into-renal-tubular-epithelial-like-cells
#9
Ying Lu, Zhuojun Wang, Lu Chen, Jia Wang, Shulin Li, Caixia Liu, Dong Sun
Amniotic fluid is an alternative source of stem cells, and human amniotic fluid-derived stem cells (AFSCs) obtained from a small amount of amniotic fluid collected during the second trimester represent a novel source for use in regenerative medicine. These AFSCs are characterized by lower diversity, a higher proliferation rate and a wider differentiation capability than adult mesenchymal stem cells (MSCs). AFSCs are selected based on the cell surface marker c-kit receptor (CD117) using immunomagnetic sorting...
March 15, 2018: Stem Cells and Development
https://www.readbyqxmd.com/read/29645000/neotuberostemonine-inhibits-the-differentiation-of-lung-fibroblasts-into-myofibroblasts-in-mice-by-regulating-hif-1%C3%AE-signaling
#10
Xin-Miao Lv, Ming-Dan Li, Si Cheng, Bao-Lin Liu, Kang Liu, Chao-Feng Zhang, Xiang-Hong Xu, Mian Zhang
Pulmonary fibrosis may be partially the result of deregulated tissue repair in response to chronic hypoxia. In this study we explored the effects of hypoxia on lung fibroblasts and the effects of neotuberostemonine (NTS), a natural alkaloid isolated from Stemona tuberosa, on activation of fibroblasts in vitro and in vivo. PLFs (primary mouse lung fibroblasts) were activated and differentiated after exposure to 1% O2 or treatment with CoCl2 (100 μmol/L), evidenced by markedly increased protein or mRNA expression of HIF-1α, TGF-β, FGF2, α-SMA and Col-1α/3α, which was blocked after silencing HIF-1α, suggesting that the activation of fibroblasts was HIF-1α-dependent...
April 12, 2018: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/29643975/physiological-hypoxia-enhances-stemness-preservation-proliferation-and-bidifferentiation-of-induced-hepatic-stem-cells
#11
Xiaosong Zhi, Jun Xiong, Mengchao Wang, Hongxia Zhang, Gang Huang, Jian Zhao, Xiaoyuan Zi, Yi-Ping Hu
Induced hepatic stem cells (iHepSCs) have great potential as donors for liver cell therapy due to their self-renewal and bipotential differentiation properties. However, the efficiency of bidifferentiation and repopulation efficiency of iHepSCs is relatively low. Recent evidence shows that physiological hypoxia, a vital factor within stem cell "niche" microenvironment, plays key roles in regulating tissue stem cell biological behaviors including proliferation and differentiation. In this study, we found that physiological hypoxia (10% O2 ) enhanced the stemness properties and promoted the proliferation ability of iHepSCs by accelerating G1/S transition via p53-p21 signaling pathway...
2018: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29643458/pro-inflammatory-cytokines-activate-hypoxia-inducible-factor-3%C3%AE-via-epigenetic-changes-in-mesenchymal-stromal-stem-cells
#12
Francesca Cuomo, Antonietta Coppola, Chiara Botti, Ciro Maione, Amalia Forte, Lucia Scisciola, Giuseppina Liguori, Ilaria Caiafa, Matilde Valeria Ursini, Umberto Galderisi, Marilena Cipollaro, Lucia Altucci, Gilda Cobellis
Human mesenchymal stromal/stem cells (hMSCs) emerged as a promising therapeutic tool for ischemic disorders, due to their ability to regenerate damaged tissues, promote angiogenesis and reduce inflammation, leading to encouraging, but still limited results. The outcomes in clinical trials exploring hMSC therapy are influenced by low cell retention and survival in affected tissues, partially influenced by lesion's microenvironment, where low oxygen conditions (i.e. hypoxia) and inflammation coexist. Hypoxia and inflammation are pathophysiological stresses, sharing common activators, such as hypoxia-inducible factors (HIFs) and NF-κB...
April 11, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29643419/author-correction-synergistic-effect-of-human-bone-morphogenic-protein-2-and-mesenchymal-stromal-cells-on-chronic-wounds-through-hypoxia-inducible-factor-1-%C3%AE-induction
#13
Sabine François, Véronique Eder, Karim Belmokhtar, Marie-Christine Machet, Luc Douay, Norbert-Claude Gorin, Marc Benderitter, Alain Chapel
A correction to this article has been published and is linked from the HTML and PDF versions of this paper. The error has been fixed in the paper.
April 11, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29629621/pdgfr-%C3%AE-restores-blood-brain-barrier-functions-in-a-mouse-model-of-focal-cerebral-ischemia
#14
Jie Shen, Guihua Xu, Runxiu Zhu, Jun Yuan, Yoko Ishii, Takeru Hamashima, Takako Matsushima, Seiji Yamamoto, Yusuke Takatsuru, Junichi Nabekura, Masakiyo Sasahara
Although platelet-derived growth factor receptor beta (PDGFR-β) mediates the recruitment of vascular pericytes into ischemic lesion to restore the blood-brain barrier (BBB) dysfunction, its mechanisms still remain elusive . Compared with control PDGFR-βfloxed / floxed mice (Floxed), postnatally induced systemic PDGFR-β knockout mice (Esr-KO) not only showed severe brain edema, neurologic functional deficits, decreased expression of tight junction (TJ) proteins, abundant endothelial transcytosis, and deformed TJs in the BBB, but also showed reduced expression of transforming growth factor-β (TGF-β) protein after photothrombotic middle cerebral artery occlusion (MCAO)...
January 1, 2018: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/29629602/deactivation-of-mitochondrial-complex-i-after-hypoxia-ischemia-in-the-immature-brain
#15
Anna Stepanova, Csaba Konrad, Sergio Guerrero-Castillo, Giovanni Manfredi, Susan Vannucci, Susanne Arnold, Alexander Galkin
Mortality from perinatal hypoxic-ischemic (HI) brain injury reached 1.15 million worldwide in 2010 and is also a major factor for neurological disability in infants. HI directly influences the oxidative phosphorylation enzyme complexes in mitochondria, but the exact mechanism of HI-reoxygenation response in brain remains largely unresolved. After induction of HI-reoxygenation in postnatal day 10 rats, activities of mitochondrial respiratory chain enzymes were analysed and complexome profiling was performed...
January 1, 2018: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/29628788/the-role-of-hypoxia-in-shaping-the-recruitment-of-proangiogenic-and-immunosuppressive-cells-in-the-tumor-microenvironment
#16
REVIEW
Salem Chouaib, Viktor Umansky, Claudine Kieda
Hypoxia characterizes growing tumors and contributes significantly to their aggressiveness. Hypoxia-inducible factors (HIFs 1 and 2) are stabilized and act differentially as transcription factors on tumor growth and are responsible for important cancer hallmarks such as pathologic angiogenesis, cellular proliferation, apoptosis, differentiation and genetic instability as well as affecting tumor metabolism, tumor immune responses, invasion and metastasis. Taking into account the tumor tissue as a whole and considering the interplay of the various partners which react with hypoxia in the tumor site lead to reconsideration of the treatment strategies...
March 2018: Contemporary Oncology Współczesna Onkologia
https://www.readbyqxmd.com/read/29628507/%C3%AE-np73-enhances-hif-1%C3%AE-protein-stability-through-repression-of-the-ecv-complex
#17
Marina Stantic, Johanna Wolfsberger, Habib A M Sakil, Margareta T Wilhelm
Cellular responses to low oxygen conditions are mainly regulated by the Hypoxia-inducible factors (HIFs). Induction of HIF-1α in tumor cells activates the angiogenic switch and allows for metabolic adaptations. HIF-1α protein levels are tightly regulated through ubiquitin-mediated proteosomal degradation; however, high levels of HIF-1α is a common feature in many solid tumors and is thought to enhance cancer cell proliferation, migration, and survival. Here, we report that the oncogenic p73 isoform, ∆Np73, increases HIF-1α protein stability...
April 9, 2018: Oncogene
https://www.readbyqxmd.com/read/29627145/influence-of-hypoxia-induced-by-sleep-disordered-breathing-in-case-of-hypertension-and-atrial-fibrillation
#18
REVIEW
Shin-Ichi Ando
Sleep disordered breathing (SDB) has been recognized as one of the important causes or factors of worsening for various cerebro- and cardiovascular diseases. On the other hand, a recent large randomized study and meta-analysis about the effect of continuous positive airway pressure (CPAP) indicated no or only minor effects to improve the outcome of SDB patients. Accumulating evidence has indicated that the key factor of the link between SDB and cardiovascular diseases might be hypoxia caused during repetitive long apneic episodes...
April 4, 2018: Journal of Cardiology
https://www.readbyqxmd.com/read/29623927/progesterone-modulates-mtor-in-the-hippocampus-of-mice-after-traumatic-brain-injury
#19
Richard Justin Garling, Lora Talley Watts, Shane Sprague, Murat Digicaylioglu
The mechanistic target of rapamycin (mTOR) is an intracellular protein kinase that functions as an energy and nutrient sensor in the cellular microenvironment of neurons. Modulation of mTOR is vital when nutrient and energy sources become limited. Hypoxia, traumatic brain injury, cellular energy states, and growth factors all regulate the phosphorylation and total levels of mTOR in cells. Alterations in the microenvironment induce transduction of signals to downstream proteins by mTOR allowing for cells to make the necessary adjustments to counteract stressors and survive...
March 2018: Neural Regeneration Research
https://www.readbyqxmd.com/read/29623692/daily-muscle-stretching-enhances-blood-flow-endothelial-function-capillarity-vascular-volume-and-connectivity-in-aged-skeletal-muscle
#20
Kazuki Hotta, Bradley J Behnke, Bahram Arjmandi, Payal Ghosh, Bei Chen, Rachael Brooks, Joshua J Maraj, Marcus L Elam, Patrick Maher, Daniel Kurien, Alexandra Churchill, Jaime L Sepulveda, Max B Kabolowsky, Demetra D Christou, Judy M Muller-Delp
KEY POINTS: In aged rats, daily muscle stretching increases blood flow to skeletal muscle during exercise. Daily muscle stretching enhanced endothelium-dependent vasodilatation of skeletal muscle resistance arterioles of aged rats. Angiogenic markers and capillarity increased in response to daily stretching in muscles of aged rats. Muscle stretching performed with a splint could provide a feasible means of improving muscle blood flow and function in elderly patients who cannot perform regular aerobic exercise...
April 5, 2018: Journal of Physiology
keyword
keyword
55077
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"