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https://www.readbyqxmd.com/read/28749416/anti-oxidative-stress-activity-is-essential-for-amanita-caesarea-mediated-neuroprotection-on-glutamate-induced-apoptotic-ht22-cells-and-an-alzheimer-s-disease-mouse-model
#1
Zhiping Li, Xia Chen, Wenqian Lu, Shun Zhang, Xin Guan, Zeyu Li, Di Wang
Amanita caesarea, an edible mushroom found mainly in Asia and southern Europe, has been reported to show good antioxidative activities. In the present study, the neuroprotective effects of A. caesarea aqueous extract (AC) were determined in an l-glutamic acid (l-Glu) induced HT22 cell apoptosis model, and in a d-galactose (d-gal) and AlCl₃-developed experimental Alzheimer's disease (AD) mouse model. In 25 mM of l-Glu-damaged HT22 cells, a 3-h pretreatment with AC strongly improved cell viability, reduced the proportion of apoptotic cells, restored mitochondrial function, inhibited the over-production of intracellular reactive oxygen species (ROS) and Ca(2+), and suppressed the high expression levels of cleaved-caspase-3, calpain 1, apoptosis-inducing factor (AIF) and Bax...
July 27, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28749049/mineral-trioxide-aggregate-enhances-the-osteogenic-capacity-of-periodontal-ligament-stem-cells-via-nf-%C3%AE%C2%BAb-and-mapk-signaling-pathways
#2
Yanqiu Wang, Yixiang Zhou, Lin Jin, Xiyao Pang, Yadie Lu, Zilu Wang, Yan Yu, Jinhua Yu
INTRODUCTION: Mineral trioxide aggregate (MTA), as a bioactive material, has a widespread application in clinical practice. To date, the effects of MTA on the proliferation and differentiation of human periodontal ligament stem cells (hPDLSCs) remain unclear. MATERIALS AND METHODS: hPDLSCs were isolated from human periodontal ligament tissues and cultured with MTA conditioned media. Cell counting kit-8 (CCK-8) assay was performed to assess the proliferation capacity of MTA-treated hPDLSCs...
July 27, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28749013/physiological-versus-pharmacological-signalling-to-myosin-phosphorylation-in-airway-smooth-muscle
#3
Ning Gao, Ming-Ho Tsai, Audrey N Chang, Weiqi He, Cai-Ping Chen, Minsheng Zhu, Kristine E Kamm, James T Stull
Ca(2+) /calmodulin activation of myosin light chain kinase (MLCK) initiates myosin regulatory light chain (RLC) phosphorylation for smooth muscle contraction with subsequent dephosphorylation for relaxation by myosin light chain phosphatase (MLCP) containing regulatory (MYPT1) and catalytic (PP1cδ) subunits. RLC phosphorylation-dependent force development is regulated by distinct signalling modules involving protein phosphorylations. We investigated responses to cholinergic agonist treatment versus neurostimulation by electric field stimulation (EFS) in bovine tracheal smooth muscle...
July 27, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28748891/study-of-chronic-kidney-disease-mineral-bone-disorders-in-newly-detected-advanced-renal-failure-patients-a-hospital-based-cross-sectional-study
#4
Praveen Kumar Etta, R K Sharma, Amit Gupta
We aim to evaluate the disturbances in mineral metabolism, abnormalities in bone mineral density (BMD), and extraskeletal calcification in newly detected, untreated predialysis stage 4 and 5 chronic kidney disease (CKD) patients at a tertiary care hospital in North India. This is cross-sectional observational study. A total of 95 (68 males, 27 females) newly detected patients underwent clinical evaluation, biochemical assessment [serum calcium, phosphorus, alkaline phosphatase (ALP), albumin, creatinine, intact parathyroid hormone (iPTH), 25- hydroxyvitamin D (25(OH)D)], BMD measurement (at spine, hip, and forearm) by dual-energy X-ray absorptiometry (DXA), lateral abdominal radiograph [for abdominal aortic calcification (AAC)], skeletal survey (to look for any abnormality including fractures), and echocardiography [for any cardiac valvular calcification (CVC)]...
July 2017: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/28748436/organophosphorus-pesticide-mixture-removal-from-environmental-matrices-by-a-soil-streptomyces-mixed-culture
#5
Gabriela Briceño, Karen Vergara, Heidi Schalchli, Graciela Palma, Gonzalo Tortella, María Soledad Fuentes, María Cristina Diez
The current study aimed to evaluate the removal of a pesticide mixture composed of the insecticides chlorpyrifos (CP) and diazinon (DZ) from liquid medium, soil and a biobed biomixture by a Streptomyces mixed culture. Liquid medium contaminated with 100 mg L(-1) CP plus DZ was inoculated with the Streptomyces mixed culture. Results indicated that microorganisms increased their biomass and that the inoculum was viable. The inoculum was able to remove the pesticide mixture with a removal rate of 0.036 and 0...
July 26, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28748194/recurrent-metatarsal-fractures-in-postmenopausal-woman-with-low-serum-alkaline-phosphatase-a-rare-diagnosis-not-to-miss
#6
Umair Iqbal, Hafsa Anwar, Ahmad Chaudhary, Madiha Alvi, Amy Freeth
Hypophosphatasia (HPP) is a rare inborn error of metabolism due to a loss-of-function mutation in the gene for tissue nonspecific isoenzyme of alkaline phosphatase (ALP) that results in low levels of ALP. The clinical presentation of HPP is variable and in adults can easily be misdiagnosed as other forms of osteomalacia. We present a case of a 53-year-old Caucasian female who was evaluated for recurrent metatarsal fractures. She reported her first metatarsal fracture at age 21, and since then had at least 8 more metatarsal fractures over her lifetime, most without injury other than weight bearing...
July 2017: Journal of Investigative Medicine High Impact Case Reports
https://www.readbyqxmd.com/read/28748173/stereological-investigation-of-the-effect-of-elaeagnus-angustifolia-fruit-hydroalcoholic-extract-on-osteoporosis-in-ovariectomized-rats
#7
Mohmmad Hossein Dabbaghmanesh, Ali Noorafshan, Pedram Talezadeh, Nader Tanideh, Farhad Koohpeyma, Aida Iraji, Marzieh Bakhshayeshkaram, Nima Montazeri-Najafabady
OBJECTIVE: Postmenopausal osteoporosis is characterized by increased fracture risk. However, each approved treatment has specific side effects. Therefore, foods with plant origins have increasingly attracted attention as an alternative treatment. Studies have shown that Elaeagnus angustifolia (EA) has antioxidant properties. The present study aimed to investigate the effects of EA hydroalcoholic extract on ovariectomy-induced osteoporosis in rats using stereological methods. MATERIAL AND METHODS: 55 female Sprague-Dawley rats were randomly assigned to control, sham operated (normal saline), ovariectomized (OVX), OVX + EA fruit extract (600 mg/kg BW/day), and OVX + estradiol benzoate (3 mg/kg BW) for 16 weeks...
May 2017: Avicenna Journal of Phytomedicine
https://www.readbyqxmd.com/read/28747969/hepatotoxicity-and-nephrotoxicity-of-saponin-enriched-extract-of-asparagus-cochinchinensis-in-icr-mice
#8
Ji Eun Sung, Jun Young Choi, Ji Eun Kim, Hyun Ah Lee, Woo Bin Yun, Jin Ju Park, Hye Ryeong Kim, Bo Ram Song, Dong Seob Kim, Chung Yeoul Lee, Hee Seob Lee, Yong Lim, Dae Youn Hwang
The inhibitory effects of Asparagus cochinchinensis against inflammatory response induced by lipopolysaccharide (LPS), substance P and phthalic anhydride (PA) treatment were recently reported for some cell lines and animal models. To evaluate the hepatotoxicity and nephrotoxicity of A. cochinchinensis toward the livers and kidneys of ICR mice, alterations in related markers including body weight, organ weight, urine composition, liver pathology and kidney pathology were analyzed in male and female ICR mice after oral administration of 150, 300 and 600 mg/kg body weight/day saponin-enriched extract of A...
June 2017: Laboratory Animal Research
https://www.readbyqxmd.com/read/28747914/extrinsic-protein-tyrosine-phosphatase-non-receptor-22-signals-contribute-to-cd8-t-cell-exhaustion-and-promote-persistence-of-chronic-lymphocytic-choriomeningitis-virus-infection
#9
Tatiana Jofra, Giuseppe Galvani, Mirela Kuka, Roberta Di Fonte, Bechara G Mfarrej, Matteo Iannacone, Shahram Salek-Ardakani, Manuela Battaglia, Georgia Fousteri
A genetic variant of the protein tyrosine phosphatase non-receptor 22 (PTPN22) is associated with a wide range of autoimmune diseases; however, the reasons behind its prevalence in the general population remain not completely understood. Recent evidence highlights an important role of autoimmune susceptibility genetic variants in conferring resistance against certain pathogens. In this study, we examined the role of PTPN22 in persistent infection in mice lacking PTPN22 infected with lymphocytic choriomeningitis virus clone 13...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28747768/controlling-adult-stem-cell-behavior-using-nanodiamond-reinforced-hydrogel-implication-in-bone-regeneration-therapy
#10
Settimio Pacelli, Ryan Maloney, Aparna R Chakravarti, Jonathan Whitlow, Sayantani Basu, Saman Modaresi, Stevin Gehrke, Arghya Paul
Nanodiamonds (NDs) have attracted considerable attention as drug delivery nanocarriers due to their low cytotoxicity and facile surface functionalization. Given these features, NDs have been recently investigated for the fabrication of nanocomposite hydrogels for tissue engineering. Here we report the synthesis of a hydrogel using photocrosslinkable gelatin methacrylamide (GelMA) and NDs as a three-dimensional scaffold for drug delivery and stem cell-guided bone regeneration. We investigated the effect of different concentration of NDs on the physical and mechanical properties of the GelMA hydrogel network...
July 26, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28747581/protein-tyrosine-phosphatase-nonreceptor-type-22-ptpn22-gene-single-nucleotide-polymorphisms-and-its-interaction-with-t2dm-on-pulmonary-tuberculosis-in-chinese-uygur-population
#11
Xian-Hua Wang, Ai-Guo Ma, Xiu-Xia Han, Lei Chen, Hui Liang, Aishan-Litifu, Abudumijit-Ablez, Feng Xue
AIMS: To investigate the association of several single nucleotide polymorphisms (SNPs) within Protein tyrosine phosphatase nonreceptor type 22 (PTPN22) gene and additional gene- gene and gene- type 2 diabetes mellitus (T2DM) interaction with pulmonary tuberculosis (PTB) risk in Chinese Uygur population. METHODS: A total of 722 participants (186 males, 536 females) were selected, including 360 PTB patients and 362 control participants. Generalized multifactor dimensionality reduction (GMDR) was used to screen the best interaction combination among SNPs and T2DM...
July 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28747548/long-non-coding-rna-miat-promotes-breast-cancer-progression-and-functions-as-cerna-to-regulate-dusp7-expression-by-sponging-mir-155-5p
#12
Tian Luan, Ximei Zhang, Shuyuan Wang, Yan Song, Shunheng Zhou, Jing Lin, Weiwei An, Weiguang Yuan, Yue Yang, Huilong Cai, Qingyuan Zhang, Lihong Wang
Long non-coding RNAs (lncRNA) have been reported as key regulators in the progression and metastasis of breast cancer. In this study, we found that the lncRNA myocardial infarction associated transcript (MIAT) expression was upregulated in breast cancer in The Cancer Genome Atlas (TCGA) data sets. We validated that MIAT was higher in breast cancer cell lines and advanced breast tumors than in normal controls. And MIAT overexpression associated with TNM stage and lymphnode metastasis. Knockdown MIAT inhibited breast cancer cell proliferation and promoted apoptosis...
July 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/28747544/activation-of-cancerous-inhibitor-of-pp2a-cip2a-contributes-to-lapatinib-resistance-through-induction-of-cip2a-akt-feedback-loop-in-erbb2-positive-breast-cancer-cells
#13
Ming Zhao, Erin W Howard, Amanda B Parris, Zhiying Guo, Qingxia Zhao, Zhikun Ma, Ying Xing, Bolin Liu, Susan M Edgerton, Ann D Thor, Xiaohe Yang
Lapatinib, a small molecule ErbB2/EGFR inhibitor, is FDA-approved for the treatment of metastatic ErbB2-overexpressing breast cancer; however, lapatinib resistance is an emerging clinical challenge. Understanding the molecular mechanisms of lapatinib-mediated anti-cancer activities and identifying relevant resistance factors are of pivotal significance. Cancerous inhibitor of protein phosphatase 2A (CIP2A) is a recently identified oncoprotein that is overexpressed in breast cancer. Our study investigated the role of CIP2A in the anti-cancer efficacy of lapatinib in ErbB2-overexpressing breast cancer cells...
July 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/28747184/meg2-is-regulated-by-mir-181a-5p-and-functions-as-a-tumour-suppressor-gene-to-suppress-the-proliferation-and-migration-of-gastric-cancer-cells
#14
Zhijian Liu, Feng Sun, Yeting Hong, Yanqing Liu, Min Fen, Kai Yin, Xiaolong Ge, Feng Wang, Xi Chen, Wenxian Guan
BACKGROUND: Protein-tyrosine phosphatase MEG2 (MEG2) is a classic tyrosine-specific protein tyrosine phosphatase (PTP). It has been reported that MEG2 participates in the carcinogenesis of the breast and liver. However, functions of MEG2 in gastric cancer remain poorly understood. METHODS: We examined the expression of MEG2 protein by western blotting and that of miR-181a-5p by qRT-PCR. We used bioinformatic analyses to search for miRNAs that potentially target MEG2...
July 26, 2017: Molecular Cancer
https://www.readbyqxmd.com/read/28747081/fabrication-characterization-and-in%C3%A2-vitro-study-of-zinc-substituted-hydroxyapatite-silk-fibroin-composite-coatings-on-titanium-for-biomedical-applications
#15
Zhenyu Zhong, Jun Ma
Zinc substituted hydroxyapatite/silk fibroin composite coatings were deposited on titanium substrates at room temperature by electrophoretic deposition. Microscopic characterization of the synthesized composite nanoparticles revealed that the particle size ranged 50-200 nm, which increased a little after zinc substitution. The obtained coatings maintained the phase of hydroxyapatite and they could induce fast apatite formation in simulated body fluid, indicating high bone activity. The cell culturing results showed that the biomimetic hydroxyapatite coatings could regulate adhesion, spreading, and proliferation of osteoblastic cells...
January 1, 2017: Journal of Biomaterials Applications
https://www.readbyqxmd.com/read/28746930/cocultivation-of-mesenchymal-stem-cells-and-endothelial-progenitor-cells-reveals-antiapoptotic-and-proangiogenic-effects
#16
Dominik Steiner, Katrin Köhn, Justus P Beier, Michael Stürzl, Raymund Horch, Andreas Arkudas
Integrating bioartificial tissues into the host vasculature is a prerequisite for tissue engineering applications. Endothelial progenitor cells (EPCs) display a high angiogenic potential and a low donor-site morbidity, making them ideal for tissue engineering applications. In our study we used a murine EPC cell line (T17b) and rat mesenchymal stem cells (MSCs) for cocultivation experiments. MSCs were cocultured with increasing T17b EPC amounts. Furthermore, MSCs in monoculture were treated with conditioned medium (CM) from T17b EPCs and T17b EPCs were treated with CM from MSCs...
July 27, 2017: Cells, Tissues, Organs
https://www.readbyqxmd.com/read/28746755/interaction-network-of-aba-receptors-in-grey-poplar
#17
Michael Papacek, Alexander Christmann, Erwin Grill
The plant hormone abscisic acid (ABA) is a key player in responses to abiotic stress. ABA regulates a plant's water status and mediates drought tolerance by controlling stomatal gas exchange, water conductance, and differential gene expression. ABA is recognized and bound by the Regulatory Component of ABA Receptors (RCARs)/PYR1/PYL (Pyrabactin Resistance 1/PYR1-like). Ligand binding stabilizes the interaction of RCARs with type 2C protein phosphatases (PP2C), which are ABA co-receptors. While the core pathway of ABA signalling has been elucidated, the large number of different ABA receptors and co-receptors within a plant species generates a complexity of heteromeric receptor complexes that has not functionally been resolved in any plant species to date...
July 26, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/28746340/effects-of-tanshinol-on-markers-of-bone-turnover-in-ovariectomized-rats-and-osteoblast-cultures
#18
Jianfeng Han, Wei Wang
This study was aimed to explore the role of tanshinol in osteoblastic cells, and the role in vivo using an ovariectomized (OVX) rat model of osteoporosis. MC3T3-E1 cells were pretreated with 0-400 μg/mL tanshinol, and then cell viability, apoptosis, alkaline phosphatase (ALP) activity and the expressions of Collagen Type I Alpha 1 (Col1A1), Runt Related Transcription Factor 2 (Runx2) and osteocalcin (OCN) were respectively detected. Rats underwent OVX surgery was intervened with 5 mg/kg tanshinol or 25 μg/kg β-estradiol (E2) for 12 weeks...
2017: PloS One
https://www.readbyqxmd.com/read/28746278/tlr4-inactivation-in-myeloid-cells-accelerates-bone-healing-of-a-calvarial-defect-model-in-mice
#19
Dan Wang, James R Gilbert, Gwen M Taylor, Chhinder P Sodhi, David J Hackam, Joseph E Losee, Timothy R Billiar, Gregory M Cooper
BACKGROUND: Toll-like receptor 4 (TLR4) has been implicated in inflammation-induced bone destruction in various chronic bone diseases; however, its direct influence on bone healing is not well understood. The authors' previous study showed accelerated bone healing with higher osteoclastogenesis gene expression in toll-like receptor 4 knockout mice (TLR4). This study aimed to further elucidate the underlying cellular mechanisms during fracture healing by generating a myeloid cell-specific toll-like receptor 4 knockout model (Lyz-TLR4 mice)...
August 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28746081/synergism-of-electrospun-nanofibers-and-pulsed-electromagnetic-field-on-osteogenic-differentiation-of-induced-pluripotent-stem-cells
#20
Abdolreza Ardeshirylajimi, Arash Khojasteh
According to the current therapies failure for bone fractures and lesions, tissue engineering showed a great potential to help solve these challenges. Because the use of growth factors is very limited in the clinic, it could be very useful that could be introducing an alternative to it. Extremely low frequency pulsed electromagnetic fields (PEMF, 1 mT, 50 Hz) were used for achieving this aim. The PEMF potential in combination with electrospun polycaprolactone (PCL) nanofibers was used to investigate the osteogenic potential of human induced pluripotent stem cells (iPSCs)...
July 25, 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
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