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Light-inducible protein

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https://www.readbyqxmd.com/read/28812775/polymorphic-light-eruption-and-il-1-family-members-any-difference-with-allergic-contact-dermatitis
#1
S Lembo, G Caiazzo, N Balato, G Monfrecola, V Patra, P Wolf, A Balato
Polymorphic light eruption (PLE) is described as a delayed-type hypersensitivity reaction (DTHR) toward a de novo light-induced antigen, yet to be identified. In effect, the inflammatory pathways of PLE and allergic contact dermatitis (ACD) share common patterns in terms of the mediators involved from the innate and adaptive immune system participating in the DTHR. As we have previously highlighted the role of interleukin (IL)-1 family members in ACD, we hypothesised that the same mediators could have similar functions in PLE...
August 16, 2017: Photochemical & Photobiological Sciences
https://www.readbyqxmd.com/read/28812276/arundic-acid-increases-expression-and-function-of-astrocytic-glutamate-transporter-eaat1-via-the-erk-akt-and-nf-%C3%AE%C2%BAb-pathways
#2
Pratap Karki, Peter Hong, James Johnson, Edward Pajarillo, Deok-Soo Son, Michael Aschner, Eunsook Y Lee
Glutamate is the major excitatory neurotransmitter in the brain, but excessive synaptic glutamate must be removed to prevent excitotoxic injury and death. Two astrocytic glutamate transporters, excitatory amino acid transporter (EAAT) 1 and 2, play a major role in eliminating excess glutamate from the synapse. Dysregulation of EAAT1 contributes to the pathogenesis of multiple neurological disorders, such as Alzheimer's disease (AD), ataxia, traumatic brain injuries, and glaucoma. In the present study, we investigated the effect of arundic acid on EAAT1 to determine its efficacy in enhancing the expression and function of EAAT1, and its possible mechanisms of action...
August 15, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28811208/macromolecular-crowding-induces-molten-globule-state-in-the-native-myoglobin-at-physiological-ph
#3
Khalida Nasreen, Shahzaib Ahamad, Faizan Ahmad, Md Imtaiyaz Hassan, Asimul Islam
Here, we report the formation of molten globule state of the native myoglobin in crowded environment. We have used Soret absorption spectroscopy and far-UV circular dichroism to monitor changes in tertiary and secondary structures of myoglobin, respectively. Our results reveal that in the presence of ficoll 70, the secondary structure of myoglobin remains unchanged while tertiary structure is lost significantly. 1-anilinonaphthalene-8-sulfonate binding experiments showed that myoglobin in the presence of various concentrations of ficoll 70, has newly exposed hydrophobic surfaces...
August 12, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28811097/type-i-collagen-promotes-primary-cilia-growth-through-down-regulating-hdac6-mediated-autophagy-in-confluent-mouse-embryo-fibroblast-3t3-l1-cells
#4
Qian Xu, Weiwei Liu, Xiaoling Liu, Wuxiyar Otkur, Toshihiko Hayashi, Masayuki Yamato, Hitomi Fujisaki, Shunji Hattori, Shin-Ichi Tashiro, Takashi Ikejima
Primary cilia are microtubule-based organelles that extend from nearly all vertebrate cells. Abnormal ciliogenesis and cilia length are suggested to be associated with hypertension and obesity as well as diseases such as Meckel-Gruber syndrome. Extracellular matrix (ECM), comprising cellular microenvironment, influences cell shape and proliferation. However, influence of ECM on cilia biogenesis has not been well studied. In this study we examined the effects of type I collagen (col I), the major component of ECM, on primary cilia growth...
August 12, 2017: Journal of Bioscience and Bioengineering
https://www.readbyqxmd.com/read/28810549/dexmedetomidine-preconditioning-protects-against-lung-injury-induced-by-ischemia-reperfusion-through-inhibition-of-autophagy
#5
Wei Zhang, Jiaqiang Zhang
The present study aimed to evaluate the role of autophagy in the protective effect of dexmedetomidine in lung injury caused by ischemia-reperfusion (IR) in rats. In total 48 adult male Sprague-Dawley rats were randomly divided into 6 groups (n=8) as follows: i) Sham group; ii) the IR group; iii) IR + 1 µg/kg dexmedetomidine preconditioning group (pre-LD); iv) IR + 10 µg/kg dexmedetomidine preconditioning group (pre-HD); v) IR + 1 µg/kg dexmedetomidine postconditioning group (post-LD); and vi) IR + 10 µg/kg dexmedetomidine postconditioning group (post-HD)...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28809441/design-and-fabrication-of-temperature-sensitive-nanogels-with-controlled-drug-release-properties-for-enhanced-photothermal-sterilization
#6
Luoyuan Li, Limin Fu, Jing Zhou, Xicheng Ai, Jianping Zhang
Excessive free radicals can cause normal protein metamorphic, and further damage healthy cells, while the damaged cells are more prone to infection with pathogenic bacteria. For better removing excessive free radicals and deleterious bacteria from human body, it is urgently needed to develop synergistic antioxidant and antibacterial agents. Herein, we designed novel temperature-sensitive, curcumin (Cur)-loaded nanogels to scavenge reactive oxygen species and kill pathogenic bacteria. Photothermal sterilization, different from traditional antibiotics, is a promising and effective treatment for inactivation of pathogenic bacteria...
August 15, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28808377/anti-inflammatory-potential-of-petiveria-alliacea-on-activated-raw264-7-murine-macrophages
#7
Rosa Martha Perez Gutierrez, Carlos Hoyo-Vadillo
BACKGROUND: Defense and protection to multiple harmful stimuli are the inflammation, when is self-amplified and uncontrolled is the basis of the pathogenesis of a wide variety of inflammatory illness. The aim of this study was to evaluate if Petiveria alliacea could attenuate inflammation in a murine model of RAW264 macrophages the involved model and its involved mechanism. MATERIALS AND METHODS: The ethanol extract from P. alliacea was precipitated with water and supernatant was used for this study (PW)...
July 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28808223/metastasis-associated-protein-1-deficiency-results-in-compromised-pulmonary-alveolar-capillary-angiogenesis-in-mice
#8
Jun-Hui Qin, Zhen-Yu Ke, Qiang Zhou, Li Wang, Yuan Liang, Ying-Mei Wang, Tong Yang, Xing Gao, Jing Ye, Rekesh Kumar, Rui-An Wang
BACKGROUND The aim of this study was to investigate the effects of metastasis-associated protein 1 (MTA1) deficiency during angiogenesis of pulmonary alveolar capillaries in mice and to determine the molecular mechanisms involved. MATERIAL AND METHODS The expressions of MTA1, CD34, vascular endothelial growth factor (VEGF), alpha smooth muscle actin (α-SMA), and HIF-1α were analyzed in the lungs of MTA1-knockout (KO) and wild-type mice at embryonic day 18.5 and 2 months by quantitative PCR, immunoblotting, and immunohistochemistry...
August 15, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28808068/deletion-of-angiotensin-converting-enzyme-2-promotes-hypertensive-nephropathy-by-targeting-smad7-for-ubiquitin-degradation
#9
Zhen Liu, Xiao-Ru Huang, Hai-Yong Chen, Erik Fung, Jian Liu, Hui-Yao Lan
Angiotensin-converting enzyme-2 (ACE2) is downregulated in hypertensive nephropathy. The present study investigated the mechanisms whereby loss of ACE2 promoted angiotensin II-induced hypertensive nephropathy in ACE2 gene knockout mice. We found that compared with wild-type animals, mice lacking ACE2 developed much more severe hypertensive nephropathy in response to chronic angiotensin II infusion, including higher levels of blood pressure, urinary protein excretion, serum creatinine, and progressive renal fibrosis and inflammation...
August 14, 2017: Hypertension
https://www.readbyqxmd.com/read/28807774/chlorin-e6-mediated-photodynamic-therapy-promotes-collagen-production-and-suppresses-mmps-expression-via-modulating-ap-1-signaling-in-p-acnes-stimulated-hacat-cells
#10
A-Reum Ryu, Mi-Young Lee
BACKGROUND: Photodynamic therapy (PDT) is a clinically approved therapeutics for cancers and non-neoplastic diseases, based on the use of a photosensitizer activated by a light. The feasibility of PDT depends on several factors, such as PDT dose, photosensitizer efficacy, type of light source, and target tissue irradiated. METHODS: In this study, the second generation photosensitizer chlorin e6 (Ce6) and halogen light were used to investigate their PDT effect on the collagen production and MMPs expression of heat killed P...
August 11, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28807642/alterations-of-apoptosis-and-autophagy-in-developing-brain-of-rats-with-epilepsy-changes-in-lc3-p62-beclin-1-and-bcl-2-levels
#11
Qinrui Li, Ying Han, Junbao Du, Hongfang Jin, Jing Zhang, Manman Niu, Jiong Qin
Current studies have indicated that apoptotic and autophagic signaling pathways are triggered by epileptic seizures, but the precise roles of these processes in epilepsy-induced neuronal loss remain unclear. Identifying a concrete molecular mechanism may help researchers develop relevant epilepsy therapies that are more effective than existing treatments. Autophagy is a type of conserved degradation that contributes to cellular homeostasis. The involved signaling pathways allow us to observe alterations in autophagy and apoptosis during epileptic seizures over time...
August 11, 2017: Neuroscience Research
https://www.readbyqxmd.com/read/28805937/new-data-on-hyperpigmentation-disorders
#12
REVIEW
S Schalka
Recently visible light (VL) and vascularization triggered by infrared light (IR) play a role in hyperpigmentation disorders of the skin. The aim of this article is to provide an update on the aetiology of hyperpigmentation disorders and means of prevention against UV, visible (VL) and infrared light (IR). The author conducted a literature review of the most recent data about hyperpigmentation disorders and means of prevention and protection. VL impacts on pigmentation, especially in individuals with phototype III, IV or V and also causes the production of Reactive Oxygen Species (ROS), erythema and DNA damage through ROS production as well as photodermatoses...
September 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28805800/optogenetic-control-of-kinetochore-function
#13
Huaiying Zhang, Chanat Aonbangkhen, Ekaterina V Tarasovetc, Edward R Ballister, David M Chenoweth, Michael A Lampson
Kinetochores act as hubs for multiple activities during cell division, including microtubule interactions and spindle checkpoint signaling. Each kinetochore can act autonomously, and activities change rapidly as proteins are recruited to, or removed from, kinetochores. Understanding this dynamic system requires tools that can manipulate kinetochores on biologically relevant temporal and spatial scales. Optogenetic approaches have the potential to provide temporal and spatial control with molecular specificity...
August 14, 2017: Nature Chemical Biology
https://www.readbyqxmd.com/read/28805489/atorvastatin-attenuates-experimental-contrast-induced-acute-kidney-injury-a-role-for-tlr4-myd88-signaling-pathway
#14
Rongzheng Yue, Chuan Zuo, Jing Zeng, Baihai Su, Ye Tao, Songmin Huang, Rui Zeng
OBJECTIVES: To investigate the protective effect of different atorvastatin doses on contrast-induced acute kidney injury and the related mechanism. METHODS: Healthy male Sprague-Dawley (SD) rats were randomly divided into the blank control group, experimental control group and different-dose atorvastatin groups. A rat model of contrast-induced acute kidney injury was established. We detected changes in serum creatinine (Scr) and blood urea nitrogen (BUN) before and after model establishment, observed and scored renal tubular injury, analyzed rat renal cell apoptosis, and measure the expression of signal pathway proteins and downstream inflammatory factors...
November 2017: Renal Failure
https://www.readbyqxmd.com/read/28803810/autophagy-plays-a-positive-role-in-zinc-induced-apoptosis-in-intestinal-porcine-epithelial-cells
#15
Xin Zhou, Yansen Li, ChunMei Li
A high‑zinc (Zn) diet has been found to promote growth performance in pigs, but causes cell apoptosis in the intestinal epithelium. To investigate the mechanism underlying the high dietary Zn-induced apoptosis in porcine small intestinal epithelium, IPEC-J2 cells (intestinal porcine epithelial cells) were used to determine the effect of Zn on cell inhibitory, apoptosis, and mitochondrial membrane potential and autophagy in vitro. Results showed that Zn inhibited IPEC-J2 cell proliferation and induced apoptosis and autophagy...
August 10, 2017: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/28802828/photolyase-dynamics-and-electron-transfer-mechanisms-of-dna-repair
#16
REVIEW
Meng Zhang, Lijuan Wang, Dongping Zhong
Photolyase, a flavoenzyme containing flavin adenine dinucleotide (FAD) molecule as a catalytic cofactor, repairs UV-induced DNA damage of cyclobutane pyrimidine dimer (CPD) and pyrimidine-pyrimidone (6-4) photoproduct using blue light. The FAD cofactor, conserved in the whole protein superfamily of photolyase/cryptochromes, adopts a unique folded configuration at the active site that plays a critical functional role in DNA repair. Here, we review our comprehensive characterization of the dynamics of flavin cofactor and its repair photocycles by different classes of photolyases on the most fundamental level...
August 9, 2017: Archives of Biochemistry and Biophysics
https://www.readbyqxmd.com/read/28800319/mir-503-3p-induces-apoptosis-of-lung-cancer-cells-by-regulating-p21-and-cdk4-expression
#17
Yi Sun, Li Li, Shigang Xing, Yinghua Pan, Yunxiang Shi, Linghua Zhang, Qiang Shen
Studies have shown that microRNAs (miRNAs) can promote or suppress tumor growth and therefore act as targets for cancer therapy. Hsa-miR-503-5p, a mature miRNA derived from 5' ends of pre-miR-503, has been proved to regulate cell proliferation, transformation, migration and invasion. However, the biological function of miR-503-3p derived from 3' ends of pre-miR-503 has never been reported. In current study, we found that miR-503-3p inhibits lung cancer cell viability and induces cell apoptosis. To better understand the molecular mechanism underlying the miR-503-3p participating in this process, PCR array and RNA-sequencing (RNA-seq) were performed and some differential expression genes were discovered between NC and miR-503-3p treated groups...
July 28, 2017: Cancer Biomarkers: Section A of Disease Markers
https://www.readbyqxmd.com/read/28798804/sinomenine-hydrochloride-attenuates-renal-fibrosis-by-inhibiting-excessive-autophagy-induced-by-adriamycin-an-experimental-study
#18
Ming-Ming Zhao, Bin Yang, Qiu Zhang, Jin-Hu Wang, Jin-Ning Zhao, Yu Zhang
The objective of this study is to investigate if sinomenine hydrochloride (SIN-HCl) could be effective against adriamycin-induced renal fibrosis by regulating autophagy in a rat model. Forty male Sprague-Dawley (SD) rats were randomly divided into control group, model group, telmisartan group, and SIN-HCl group; rat model was induced by adriamycin; all rats were given intragastric administration for 6 weeks. Urine was collected from rats in metabolic cages to determine 24 h protein level. This was done after intragastric administration for the first two weeks and then once for every two weeks...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28798298/the-algicidal-mechanism-of-prodigiosin-from-hahella-sp-ka22-against-microcystis-aeruginosa
#19
Ke Yang, Qiuliang Chen, Danyang Zhang, Huajun Zhang, Xueqian Lei, Zhangran Chen, Yi Li, Yaling Hong, Xiaohong Ma, Wei Zheng, Yun Tian, Tianling Zheng, Hong Xu
In recent years, Microcystis aeruginosa blooms have occurred throughout the world, causing huge economic losses and destroying aquatic ecosystems. It is necessary to develop effective and ecofriendly methods to control M. aeruginosa blooms. Here, we report a high algicidal activity of prodigiosin (PG) against M. aeruginosa as well as the algicidal mechanism. PG showed high algicidal activity against M. aeruginosa, with a 50% lethal dose (LD50) of 5.87 μg/mL in 72 h. A combination of methods, including propidium iodide and Annexin V-fluorescein staining assays and light and electron microscopy indicated the existence of two modes of cell death with features similar to those in eukaryotic programmed cell death: necrotic-like and apoptotic-like...
August 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28797905/evidence-for-the-role-of-bmnpv-bm65-protein-in-the-repair-of-ultraviolet-induced-dna-damage
#20
Qi Tang, Peng Wu, Zhaoyang Hu, Yanhua Yang, Lipeng Qiu, Hanqing Liu, Shanying Zhu, Zhongjian Guo, Hengchuan Xia, Keping Chen, Guohui Li
It is unclear how, or to what extent, baculovirus DNA that has been damaged by ultraviolet (UV) light is repaired during infection and replication. In our previous study, expression of Bombyx mori nucleopolyhedrovirus (BmNPV) ORF Bm65, a homolog of Autographa californica multiple nucleopolyhedrovirus (AcMNPV) ac79, correlated with decreased inactivation of virus by UV irradiation. In the current study, we accumulated more evidence pointing to a role for Bm65 in repair of UV-induced DNA damage. The localization of Bm65 was studied using enhanced green fluorescent protein (EGFP) fusion constructs expressed in BmN cells transfected with a Bm65 expression plasmid...
August 8, 2017: Journal of Invertebrate Pathology
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