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Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire

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https://www.readbyqxmd.com/read/29324184/effects-of-non-steroidal-anti-inflammatory-drugs-on-serum-proinflammatory-cytokines-in-the-treatment-of-ankylosing-spondylitis
#1
Yong Yan, Tuan-Mao Guo, Chao Zhu
OBJECTIVE: This study was conducted to investigate the correlation between levels of serum proinflammatory cytokines and the clinical efficacy of non-steroidal anti-inflammatory drugs (NSAIDs) in patients with ankylosing spondylitis (AS). METHODS: A total of 148 AS patients were selected and received NSAID treatment. ELISA was used to assess cytokine levels, and patients were assigned into positively effective, effective, moderately effective, and ineffective groups...
January 11, 2018: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/29316404/the-cxcl12-cxcr4-axis-promotes-migration-invasion-and-emt-in-human-papillary-thyroid-carcinoma-b-cpap-cells-via-nf-%C3%AE%C2%BAb-signaling
#2
Yuanqiang Lin, Qingjie Ma, Lin Li, Hui Wang
Papillary thyroid carcinoma (PTC) is the most common thyroid malignancy involving local and distant metastasis. It is known that CXC chemokine ligand 12 (CXCL12) interacts specifically with CXC chemokine receptor 4 (CXCR4) to guide the migration of PTC cells. However, the signaling pathway downstream of the CXCL12/CXCR4 axis in PTC is not fully understood. In the present study, high expression of CXCR4 was detected in 38 out of 82 PTC specimens, and the expression level of CXCR4 was significantly correlated with the stage of PTC...
January 9, 2018: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/29301090/evaluation-of-therapeutic-effect-of-rice-husk-silica-combined-with-platelets-derived-growth-factor-in-hepatic-veno-occlusive-disease
#3
Eithar K Al Adham, Amal I Hassan, M M Hazem, Ahmed Shebl
Veno- occlusive disease is an important pattern of hepatotoxicity associated with antineoplastic drugs. The study aimed to investigate the possible therapeutic impact of rice husk silica (RHS) nanoparticles combined with a platelet-derived growth factor (PDGF) on the Veno-occlusive disease in liver (VOD) elicited by dactinomycin (DAC) in rats. Forty-eight male Sprague-Dawely rats were classified into six groups, 8 rats each. The first group served as control, the second, animals were infused by intraperitoneal injection with DAC (0...
January 4, 2018: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/29268033/drosophila-hep-pathway-mediates-lrrk2-induced-neurodegeneration
#4
Dejun Yang, Joseph M Thomas, Tianxia Li, Youngseok Lee, Zhaohui Liu, Wanli Smith
Although the pathogenesis of Parkinson's disease (PD) remains unclear, mutations in leucine-rich repeat kinase 2 (Lrrk2) are among the major causes of familial PD. Most of these mutations disrupt Lrrk2 kinase and/or GTPase domain function, resulting in neuronal degeneration. However, the signal pathways underlying Lrrk2-induced neuronal degeneration are not fully understood. There is an expanding body of evidence that suggests a link between Lrrk2 function and MAP kinase (MAPK) cascades. To further investigate this link in vivo, genetic RNAi screens of the MAPK pathways were performed in a Drosophila model to identify genetic modifier(s) that can suppress G2019S-Lrrk2-induced PD-like phenotypes...
December 21, 2017: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/29253354/emerging-branches-of-the-n-end-rule-pathways-are-revealing-the-sequence-complexities-of-n-termini-dependent-protein-degradation
#5
Mohame A Eldeeb, Luana C A Leitao, Richard P Fahlman
The N-end rule links the identity of the N-terminal amino acid of a protein to its in vivo half life as some N-terminal residues confer metabolic instability to a protein via their recognition by the cellular machinery that targets them for degradation. Since its discovery, the N-end rule has generally been defined as set of rules of whether an N-terminal residue is stabilizing or not. However, recent studies are revealing that the N-terminal code of amino acids conferring protein instability is more complex than previously appreciated as recent investigations are revealing that the identity of adjoining downstream residues can also influence the metabolic stability of N-end rule substrate...
December 18, 2017: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/29216436/altered-muscarinic-receptor-expression-in-the-cerebral-cortex-of-epileptic-rats-restorative-role-of-withania-somnifera
#6
T R Anju, S Smijin, Jobin Mathew, C S Paulose
Temporal Lobe Epilepsy involves a sequence of events which can lead to neurotransmitter signalling alterations. Many herbal extracts are considered as alternative therapeutic method for epilepsy management. In the present study, we investigated the effect of Withania somnifera (WS) root extract and Withanolide A (WA) in the management of Temporal Lobe Epilepsy. Confocal imaging of TOPRO-3 stained cortical sections showed severe damage in epileptic brain. We also observed a reduced antioxidant potential and increased peroxide level in epileptic group...
December 7, 2017: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/29206487/role-of-catechins-on-et-1-induced-stimulation-of-pld-and-nadph-oxidase-activities-in-pulmonary-smooth-muscle-cells-determination-of-the-probable-mechanism-by-molecular-docking-studies
#7
Sajal Chakraborti, Jaganmay Sarkar, Rajabrata Bhuyan, Tapati Chakraborti
Treatment of human pulmonary artery smooth muscle cells with ET-1 stimulated PLD and NADPH oxidase activities, which were inhibited upon pretreatment with bosentan (ET-1 receptor antagonist), FIPI (PLD inhibitor), apocynin (NADPH oxidase inhibitor) and EGCG & ECG (catechins having galloyl group), but not EGC & EC (catechins devoid of galloyl group). Herein, we determined the probable mechanism by which the galloyl group containing catechins inhibit ET-1 induced stimulation of PLD activity by molecular docking analyses based on our biochemical studies...
December 5, 2017: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/29190123/savitzky-golay-smoothing-and-differentiation-for-pcr-quantification
#8
Charles Gaudreault, Joanny Salvas, Joël Sirois
In quantitative PCR (qPCR), replicates can minimize the impact of intra-assay variation; however inter-assay variations must be minimized in order to obtain a robust quantification method. The method proposed in this study uses Savitzky-Golay Smoothing and Differentiation (SGSD) to identify a derivative maximum-based cycle of quantification. It does not rely on curve modeling, as is the case with many existing techniques. PCR fluorescence data sets challenged for inter-assay variations (different thermocycler units, different reagents batches, different operators, different standard curves and different labs) were used for the evaluation...
November 30, 2017: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/29172027/an-enhanced-chemo-enzymatic-method-for-loading-substrates-onto-carrier-protein-domains
#9
Tiia Kittilä, Max J Cryle
Non-ribosomal peptide synthetase (NRPS) machineries produce many medically relevant peptides that cannot be easily accessed by chemical synthesis. Thus, understanding NRPS mechanism is of crucial importance to allow efficient redesign of these machineries in order to produce new compounds. During NRPS-mediated synthesis, substrates are covalently attached to PCPs, and studies of NRPSs are impeded by difficulties in producing PCPs loaded with substrates. Different approaches to load substrates on to PCP domains have been described, but all suffer from difficulties in either the complexity of chemical synthesis or low enzymatic efficiency...
November 24, 2017: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/29166568/camel-whey-protein-protects-lymphocytes-from-apoptosis-via-the-pi3k-akt-nf-%C3%AE%C2%BAb-atf-3-and-hsp-70-signaling-pathways-in-heat-stressed-male-mice
#10
Gamal Badr, Nancy K Ramadan, Hanem S Abdel-Tawab, Samia F Ahmed, Mohamed H Mahmoud
Heat stress (HS) is an environmental factor that depresses the immune systems mediating dysfunctional immune cells. Camel whey protein (CWP) can scavenge free radicals and enhance immunity. The present study investigated the impact of dietary supplementation with CWP on immune dysfunction induced by exposure to HS. Male mice (n = 45) were divided into three groups: control group; HS group; and HS mice that were orally administered CWP (HS+CWP group). The HS group exhibited elevated levels of reactive oxygen species (ROS) and pro-inflammatory cytokines (IL-1β, IL-6, TNF-α) as well as a significant reduction in the IL-2 and IL-4 levels...
November 22, 2017: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/29156143/identification-of-nuclear-localization-signals-in-the-human-homeoprotein-msx1
#11
Akio Shibata, Junichiro Machida, Seishi Yamaguchi, Masashi Kimura, Tadashi Tatematsu, Hitoshi Miyachi, Atsuo Nakayama, Kazuo Shimozato, Yoshihito Tokita
MSX1 is one of the homeoproteins with the homeodomain (HD) sequence, which regulates proliferation and differentiation of mesenchymal cells. In this study, we investigated the nuclear localization signal (NLS) in the MSX1 HD by deletion and amino acid substitution analyses. The web-based tool NLStradamus predicted two putative basic motifs in the N- and C-termini of the MSX1 HD. Green fluorescent protein (GFP) chimera studies revealed that NLS1 (<sub>161</sub>RKHKTNRKPR<sub>170</sub>) and NLS2 (<sub>216</sub>NRRAKAKR<sub>223</sub>) were independently insufficient for robust nuclear localization...
November 20, 2017: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/29141157/the-devastating-effect-of-exposure-to-high-irradiation-dose-on-liver-and-the-performance-of-synthesized-nano-hap-in-relieve-the-associated-symptoms-in-rats
#12
Eman Ismail Gheriany, Sameh A Awwad
Ionizing radiation is one of the environmental factors that may contribute to liver dysfunction by a mechanism involving oxidative stress. The present investigation was undertaken to study the possible therapeutic effect of nano-HAp on whole body gamma irradiation induced hepatotoxicity in rats. The study consisted of three groups of 10 rats each. Group 1 (control), whereas group 2 received a single dose of γ-radiation (10Gy). The animals in groups 3 was treated with nano-HAp (100 mg/kg b.w.) once / week for three weeks starting in the next day of γ radiation...
November 15, 2017: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/29112458/review-detrimental-effects-of-alcohol-exposure-around-conception-putative-mechanisms
#13
Jacinta I Kalisch-Smith, Karen M Moritz
In western countries, alcohol consumption is widespread in women of reproductive age, and in binge quantities. These countries also continue to have high incidences of unplanned pregnancies, with women often reported to cease drinking after discovering their pregnancy. This suggests the early embryo may be highly exposed to the detrimental effects of alcohol during this periconceptional period. The periconception and pre-implantation windows which includes maturation of the oocyte, fertilisation and morphogenesis of the pre-implantation embryo, are particularly sensitive times of development...
November 7, 2017: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/29091741/skeletal-muscle-and-fetal-alcohol-spectrum-disorder
#14
Semone B Myrie, Mark A Pinder
Skeletal muscle is critical for mobility and many metabolic functions integral to survival and long-term health. Alcohol can affect skeletal muscle physiology and metabolism, which will have immediate and long-term consequences on health. While skeletal muscle abnormalities, including morphological, biochemical and functional impairments are well documented in adults consuming excessive alcohol, there is a scarcity of information about skeletal muscle in the prenatal alcohol exposure (PAE) offspring. This review examines the available studies addressing skeletal muscle abnormalities due to PAE...
November 1, 2017: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/29091739/postnatal-nutritional-treatment-of-neurocognitive-deficits-in-foetal-alcohol-spectrum-disorder-fasd
#15
Adriana Bastons-Compta, Marta Astals, Vicente Andreu, Elisabet Navarro, Oscar Garcia-Algar
Ethanol is the most important teratogen agent in humans. Prenatal alcohol exposure can lead to a wide range of adverse effects, which are broadly termed as Foetal Alcohol Spectrum Disorder (FASD). Socioeconomic status, ethnicity, differences in genetic susceptibility related to ethanol metabolism, alcohol consumption patterns, obstetric problems, maternal nutrition, stress, and other co-administered drugs are all factors that may influence FASD manifestations. Recently, much attention has been paid to the role of nutrition as a protective factor against alcohol teratogenicity...
November 1, 2017: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/29088550/preimplantation-alcohol-exposure-and-developmental-programming-of-fasd-an-epigenetic-perspective
#16
Lisa-Marie Legault, Virginie Bertrand-Lehouillier, Serge McGraw
Alcohol exposure during in utero development can permanently change the developmental programming of physiological responses, thereby increasing the risk of childhood neurological illnesses and later adverse health outcomes associated with fetal alcohol spectrum disorders (FASD). There is an increasing body of evidence indicating that alcohol exposure during gestation triggers lasting epigenetic alterations in offspring long after the initial insult; together, these studies support the role of epigenetics in FASD etiology...
October 31, 2017: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/29069552/-i-xenopus-i-embryos-to-study-fetal-alcohol-syndrome-a-model-for-environmental-teratogenesis
#17
Abraham Fainsod, Hadas Kot-Leibovich
Vertebrate model systems are central to characterize the outcomes of ethanol exposure and the etiology of Fetal Alcohol Spectrum Disorder (FASD), taking advantage of their genetic and morphological closeness and similarity to humans. We discuss the contribution of amphibian embryos to FASD research, focusing on <i>Xenopus</i> embryos. The <i>Xenopus</i> experimental system is characterized by external development and accessibility throughout embryogenesis, large clutch sizes, gene and protein activity manipulation, transgenesis and genome editing, convenient chemical treatment, explants and conjugates and many other experimental approaches...
October 25, 2017: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/29040816/lamin-a-c-mutation-associated-with-lipodystrophy-influences-adipogenic-differentiation-of-stem-cells-through-interaction-with-notch-signaling
#18
Ksenia Perepelina, Renata I Dmitrieva, Elena Ignatieva, Aleksandra Borodkina, Anna Kostareva, Anna Malashicheva
Lamin A/C is involved in many cellular functions due to its ability to bind chromatin and transcription factors and affect their properties. Mutations of LMNA gene encoding lamin A/C affect differentiation capacity of stem cells. However, signaling pathways involved in interaction with lamins in cellular differentiation remain unclear. Lipodystrophy associated with LMNA mutation R482L causes loss of fat tissue. In this study we investigated the role of LMNA mutation R482L in modulating Notch signaling activity in adipogenic differentiation of mesenchymal stem cells...
October 17, 2017: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/29040815/the-role-of-folic-acid-and-selenium-against-oxidative-ethanol-damage-in-early-life-programming-a-review
#19
Mª Luisa Ojeda Murillo, Fatima Nogales Bueno, Mª Luisa Murillo Taravillo, Olimpia Carreras Sánchez
Several disorders in children, called Fetal Alcohol Spectrum Disorders (FASD), occur as result of alcohol consumption during pregnancy and lactation. They appear, at least in part, to be related to the oxidative stress that this drug generates. Ethanol metabolism generates reactive oxygen species and causes a depletion of the antioxidant molecule glutathione (GSH) leading to oxidative stress and lipid and protein damage which are related to growth retardation and neurotoxicity, increasing the incidence of FASD...
October 17, 2017: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/29040814/inhibiting-polo-like-kinase-1-plk1-enhances-radiosensitization-via-modulating-dna-repair-proteins-in-non-small-cell-lung-cancer
#20
Da Yao, Peigui Gu, Youyu Wang, Weibin Luo, Huiliang Chi, Jianjun Ge, Youhui Qian
To assure the faithful chromosome segregation, cells make use of the spindle assembly checkpoint (SAC), which can be activated in aneuploidy cancer cells. In this study, the efficacies of inhibiting Polo-like kinase 1 (PLK1) on the radiosensitization of non-small cell lung cancer (NSCLC) cells were studied. Clonogenic survival assay was performed to identify the effects of the PLK1 inhibitor on radiosensitivity within NSCLC cells. Mitotic catastrophe assessment was used to measure the cell death and γH2AX foci were utilized to assess the DNA double-strand breaks (DSB)...
October 17, 2017: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
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