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https://www.readbyqxmd.com/read/28738610/a-novel-donor-%C3%AF-acceptor-type-fluorescence-probe-for-sensing-ph-mechanism-and-application-in-vivo
#1
Jianbin Chao, Huijuan Wang, Yongbin Zhang, Caixia Yin, Fangjun Huo, Kailun Song, Zhiqing Li, Ting Zhang, Yaqin Zhao
A novel pH fluorescent probe 1-(pyren-1-yl)-3-(6-methoxypridin-3-yl)-acrylketone, (PMPA), which had a pyrene structure attached to methoxypyridine, was synthesized for monitoring extremely acidic and alkaline pH. The pH titrations indicated that PMPA displayed a remarkable emission enhancement with a pKa of 2.70 and responded linearly to minor pH fluctuations within the extremely acidic range of 1.26-3.97. Interestingly, PMPA also exhibited strong pH-dependent characteristics with pKa 9.32 and linear response to extreme-alkalinity range of 8...
November 1, 2017: Talanta
https://www.readbyqxmd.com/read/28738592/a-unique-red-emitting-two-photon-fluorescent-probe-with-tumor-specificity-for-imaging-in-living-cells-and-tissues
#2
Xiuqi Kong, Baoli Dong, Nan Zhang, Chao Wang, Xuezhen Song, Weiying Lin
Tumor-specific imaging can provide an attractive approach for the early detection and prognosis of cancer, as well as the precise image-guided tumor-removal surgery. Herein, we describe a unique red-emitting two-photon fluorescent probe (N-BN) for tumor-specific imaging. N-BN utilized Nile Red as the red-emitting two-photon fluorophore and employed biotin as the tumor-specific ligand. In the presence of a variety of biomolecules or in different pH buffers, the fluorescence intensity of N-BN at 655nm showed no noticeable change...
November 1, 2017: Talanta
https://www.readbyqxmd.com/read/28738535/role-of-gab1-pi3k-akt-signaling-high-glucose-induced-cardiomyocyte-apoptosis
#3
Dongmei Su, Yunjun Zhou, Shanshan Hu, Lina Guan, Cuige Shi, Qi Wang, Yingyu Chen, Cailing Lu, Qian Li, Xu Ma
Gestational diabetes mellitus (GDM) is a risk factor for abnormal heart development. Previous work showed that a decrease of myocardial cells and an increase of apoptotic cells leading to heart defects under hyperglycemia, and many genes and protein have been found to play important roles in cardiomyocyte apoptosis. However, there are still many blind nodes in HG-induced cardiac apoptosis. Our study showed that down-regulation of GAB1 occurred concurrently with HG-induced cardiomyocytes apoptosis and in the heart tissues of offspring of diabetic rats in vitro and in vivo...
July 20, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28738528/molecular-basis-for-oxidative-stress-induced-by-simulated-microgravity-in-nematode-caenorhabditis-elegans
#4
Li Zhao, Qi Rui, Dayong Wang
Caenorhabditis elegans is an important in vivo assay system for toxicological studies. Herein, we investigated the role of oxidative stress and the underlying molecular mechanism for induced adverse effects of simulated microgravity. In nematodes, simulated microgravity treatment induced a significant induction of oxidative stress. Genes (mev-1, gas-1, and isp-1) encoding a molecular machinery for the control of oxidative stress were found to be dysregulated in simulated microgravity treated nematodes. Meanwhile, genes (sod-2, sod-3, sod-4, sod-5, aak-2, skn-1, and gst-4) encoding certain antioxidant defense systems were increased in simulated microgravity treated nematodes...
July 19, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28738526/the-potential-of-chrysophanol-in-protecting-against-high-fat-induced-cardiac-injury-through-nrf2-regulated-anti-inflammation-anti-oxidant-and-anti-fibrosis-in-nrf2-knockout-mice
#5
Yonggang Lian, Xiangjun Xia, Haiying Zhao, Yunfeng Zhu
Cardiovascular complications induced by high fat are one of the most challenging health problems presently. Oxidative stress, inflammation and fibrosis are major components included in the pathology of diabetic cardiomyopathy. Nuclear factor erythroid 2-related factor 2 (Nrf2) has been reported as an essential therapeutic target in various diseases for its induction of anti-oxidant enzymes, and other protective enzymes. Additionally, a number of Nrf2 activators showed strong anti-inflammatory properties. In the study, we calculated the Nrf2-dependent anti-oxidant, anti-inflammatory and anti-fibrosis effects of chrysophanol in high fat diet-induced diabetic heart injury...
July 19, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28738502/formulation-and-optimization-of-lacidipine-loaded-niosomal-gel-for-transdermal-delivery-in-vitro-characterization-and-in-vivo-activity
#6
Mohd Qumbar, Ameeduzzafar, Syed Sarim Imam, Javed Ali, Javed Ahmad, Asgar Ali
The aim of the present research work is to formulate lacidipine (LAC) loaded niosomes formulation for the management of hypertension by thin film hydration technique. The developed formulations were statistically optimized by four factors, three levels Box-Behnken design and were evaluated for vesicle size, entrapment efficiency, and flux. The optimized LAC niosomes was further evaluated for permeation depth by confocal laser scanning microscopy (CLSM) and converted to gel formulation. Further, the optimized LAC niosomes gel was evaluated for ex-vivo permeation study, skin irritation study, stability study and pharmacodynamics study...
July 18, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28738501/inhibition-of-glycogen-synthase-kinase-3-increased-subventricular-zone-stem-cells-proliferation
#7
Narges Pachenari, Sahar Kiani, Mohammad Javan
The effects of Wnt signaling modifiers on cell proliferation, seem to be cell specific. Enhancing the proliferation of subventricular zone (SVZ) progenitors has been in the focus of research in recent years. Here we investigate the effect of CHIR99021, a Glycogen Synthase Kinase 3 (GSk-3) inhibitor, on SVZ progenitor's proliferation both in vivo and in vitro. Neural stem cells were extracted from the adult C57bl/6 by mincing and trypsin treatment followed by culturing in specific medium. Sphere cells formed within about 7-10days and were characterized by immunostaining...
July 18, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28738500/mir-101-3p-inhibits-the-growth-and-metastasis-of-non-small-cell-lung-cancer-through-blocking-pi3k-akt-signal-pathway-by-targeting-malat-1
#8
Xiaoqiang Zhang, Xianju He, Yunbing Liu, Huiqing Zhang, He Chen, Shanxian Guo, Yonggang Liang
BACKGROUND: MiR-101-3p is an important tumor suppressor miRNA in many human cancers. This study was to investigate the role of miR-101-3p in the progression of non-small cell lung cancer (NSCLC) and its potential underlying mechanism. METHODS: In this study, the endogenous expression of miR-101-3p or MALAT-1 in cells was modulated by cell transfection assays. The regulatory interaction of miR-101-3p and MALAT-1 was examined by Luciferase reporter gene and RNA pull-down assays...
July 18, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28738499/aqueous-extract-of-codium-fragile-suppressed-inflammatory-responses-in-lipopolysaccharide-stimulated-raw264-7-cells-and-carrageenan-induced-rats
#9
Seul Ah Lee, Sung-Min Moon, Yun Hee Choi, Seul Hee Han, Bo-Ram Park, Mi Suk Choi, Jae-Sung Kim, Yong Hwan Kim, Do Kyung Kim, Chun Sung Kim
Codium fragile (Suringar) Hariot has been used in Oriental medicine for the treatment of enterobiasis, dropsy, and dysuria and has been shown to have various biological effects. In this study, we evaluated the anti-inflammatory effects of aqueous extract of C. fragile (AECF) using in vitro and in vivo models. Nitric oxide (NO), prostaglandin E2 (PGE2), inflammatory-related mRNAs, and proteins were determined using the Griess assay, enzyme-linked immunosorbent assay (ELISA), reverse transcription-polymerase chain reaction (RT-PCR), and western blotting, respectively...
July 18, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28738498/microrna-299-3p-suppresses-proliferation-and-invasion-by-targeting-vegfa-in-human-colon-carcinoma
#10
Jia-Yong Wang, Jin-Bo Jiang, Yuan Li, Yan-Lei Wang, Yong Dai
Accumulating evidences have shown that microRNAs (miRNAs) are vital regulators and possess huge capabilities in post-transcriptional control. Although a large number of miRNAs have been identified to be dysregulated in human cancers especially in colon cancer, our understandings of the function of most miRNAs are still largely limited. In this study, we have demonstrated that miR-299-3p plays a critical role in suppressing colon carcinoma progression by targeting Vascular Endothelial Growth Factor A (VEGFA)...
July 18, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28738360/targeting-developmental-pathways-the-achilles-heel-of-cancer
#11
Wolfram C M Dempke, Klaus Fenchel, Peter Uciechowski, Timothy Chevassut
Developmental pathways (e.g., Notch, Hippo, Hedgehog, Wnt, and TGF-β/BMP/FGF) are networks of genes that act co-ordinately to establish the body plan, and disruptions of genes in one pathway can have effects in related pathways and may result in serious dysmorphogenesis or cancer. Interestingly, all developmental pathways are highly conserved cell signalling systems present in almost all multicellular organisms. In addition, they have a crucial role in cell proliferation, apoptosis, differentiation, and finally in organ development...
July 22, 2017: Oncology
https://www.readbyqxmd.com/read/28738346/synergistic-activity-of-berberine-with-azithromycin-against-pseudomonas-aeruginosa-isolated-from-patients-with-cystic-fibrosis-of-lung-in-vitro-and-in-vivo
#12
YongTao Li, JianRong Huang, LanJuan Li, LinSheng Liu
BACKGROUND/AIMS: Pseudomonas aeruginosa (PA) is one of the major opportunistic pathogens which can cause chronic lung infection of cystic fibrosis (CF). The formation of PA biofilm promotes CF development and restricts the antimicrobial efficacies of current antibiotics. METHODS: The antimicrobial effects of azithromycin (AZM) and berberine (BER) alone and in combination were evaluated using microdilution method, checkerboard assay, time-kill test, qRT-PCR analysis and absorption method...
July 24, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28738343/mir-26a-b-inhibit-tumor-growth-and-angiogenesis-by-targeting-the-hgf-vegf-axis-in-gastric-carcinoma
#13
Yiran Si, Haiyang Zhang, Tao Ning, Ming Bai, Yi Wang, Haiou Yang, Xinyi Wang, Jialu Li, Guoguang Ying, Yi Ba
BACKGROUND/AIMS: Abnormal expression of HGF is found in various cancers and correlates with tumor proliferation, metastasis and angiogenesis. However, the regulatory mechanism of the HGF-VEGF axis remains unclear. METHODS: The expression characteristic of HGF in human gastric cancer tissues was shown by an immunohistochemistry assay, and the expression levels of target protein were detected by Western blot. The relative levels of miR-26a/b and target mRNA were examined by qRT-PCR...
July 24, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28738328/a-novel-role-for-mir-520a-3p-in-regulating-egfr-expression-in-colorectal-cancer
#14
Rui Zhang, Rui Liu, Chang Liu, Yahan Niu, Jianguo Zhang, Baoliang Guo, Chen-Yu Zhang, Jing Li, Jie Yang, Xi Chen
BACKGROUND/AIMS: MicroRNAs (miRNAs) have been consistently demonstrated to be involved in colorectal cancer as either tumour oncogenes or tumour suppressors. However, the detailed role of miR-520a-3p in colorectal cancer remains poorly understood. METHODS: Quantitative RT-PCR and western blotting assays were used to measure miR-520a-3p and EGFR expression levels in colorectal cancer tissues, respectively. Luciferase reporter assay was employed to validate the direct targeting of EGFR by miR-520a-3p...
July 24, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28738247/asiatic-acid-inhibits-lps-induced-inflammatory-response-in-human-gingival-fibroblasts
#15
Chunbo Hao, Buling Wu, Zhiming Hou, Qi Xie, Tianan Liao, Tao Wang, Dandan Ma
Asiatic acid, a triterpenoid component isolated from Centella asiatica (L.) Urban, possesses antioxidative and anti-inflammatory activities. In this study, we aimed to investigate the anti-inflammatory effects of asiatic acid both in vivo and in vitro. HGFs or RAW264.7 cells were treated with asiatic acid 1h before LPS treatment. Cell viability was measured by MTT assay. The levels of PGE2, NO, IL-6, and IL-8 were detected by ELISA. Protein expression levels were detected by western blot analysis. In vivo, asiatic acid significantly inhibited LPS-induced IL-6 and IL-8 expression levels in gingival tissues...
July 21, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28738234/m1-homeopathic-complex-trigger-effective-responses-against-leishmania-l-amazonensis-in-vivo-and-in-vitro
#16
Katia Fialho Nascimento, Fabiana Rodrigues de Santana, Cleber Rafael Vieira da Costa, Vanessa Kaplum, Helito Volpato, Celso Vaturo Nakamura, Leoni Villano Bonamin, Dorly de Freitas Buchi
Leishmaniasis is a term referring to a range of clinical conditions caused by protozoan parasites of the genus Leishmania, Trypanosomatidae family, Kinetoplastida order that is transmitted by the bite of certain species of mosquitoes Phlebotominae subfamily. These parasites infect hosts wild and domestic mammals, considered as natural reservoirs and can also infect humans. Leishmania are obligate intramacrophage protozoa that have exclusively intracellular life style. This suggests that the amastigotes possess mechanisms to avoid killing by host cells...
July 21, 2017: Cytokine
https://www.readbyqxmd.com/read/28738185/mother-and-child-characteristics-at-birth-and-early-age-leukemia-a-case-cohort-population-based-study-in-brazil
#17
Rejane de Souza Reis, Neimar de Paula Silva, Marceli de Oliveira Santos, Julio Fernando Pinto Oliveira, Luiz Claudio Santos Thuler, Beatriz de Camargo, Maria S Pombo-de-Oliveira
OBJECTIVE: The population-based cancer registries (PBCR) and the Information System on Live Births in Brazil (Sistema de Informações sobre Nascidos Vivos [SINASC]) have information that enables the test for risk factors associated with leukemia at an early age. The aim of this study was to identify maternal and birth characteristics associated with early-age acute leukemia (EAL) in Brazil. METHODS: A case-cohort study was performed using secondary dataset information of PBCR and SINASC...
July 21, 2017: Jornal de Pediatria
https://www.readbyqxmd.com/read/28738112/central-role-of-protein-kinase-a-in-promoting-trigeminal-nociception-in-an-in-vivo-model-of-temporomandibular-disorders
#18
Lindsey K Koop, Jordan L Hawkins, Lauren E Cornelison, Paul L Durham
AIMS: To investigate cellular changes in the spinal trigeminal nucleus (STN) and trigeminal ganglion (TG) associated with trigeminal nociception mediated by inflammation in the temporomandibular joint (TMJ). METHODS: Male Sprague-Dawley rats (n = 86) were utilized to investigate cellular and behavioral responses to prolonged TMJ inflammation caused by bilateral injection of Complete Freund's Adjuvant (CFA) in the TMJ capsules. To investigate the cellular effects of protein kinase A (PKA) in the STN, rats were injected intrathecally with the selective PKA inhibitor KT5720 prior to injection of CFA into both TMJ capsules...
July 2017: Journal of Oral & Facial Pain and Headache
https://www.readbyqxmd.com/read/28738073/the-n-terminal-region-of-serum-amyloid-a3-protein-activates-nf-%C3%AE%C2%BAb-and-up-regulates-muc2-mucin-mrna-expression-in-mouse-colonic-epithelial-cells
#19
Manami Tashiro, Ami Iwata, Marika Yamauchi, Kaori Shimizu, Ayaka Okada, Naotaka Ishiguro, Yasuo Inoshima
Serum amyloid A (SAA) is the major acute-phase protein and a precursor of amyloid A (AA) in AA amyloidosis in humans and animals. SAA isoforms have been identified in a wide variety of animals, such as SAA1, SAA2, SAA3, and SAA4 in mouse. Although the biological functions of SAA isoforms are not completely understood, recent studies have suggested that SAA3 plays a role in host defense. Expression of SAA3 is increased on the mouse colon surface in the presence of microbiota in vivo, and it increases mRNA expression of mucin 2 (MUC2) in murine colonic epithelial cells in vitro, which constitutes a protective mucus barrier in the intestinal tract...
2017: PloS One
https://www.readbyqxmd.com/read/28738061/magnetic-resonance-imaging-and-tensor-based-morphometry-in-the-mptp-non-human-primate-model-of-parkinson-s-disease
#20
Michel Modo, William R Crum, Madeline Gerwig, Anthony C Vernon, Priya Patel, Michael J Jackson, Sarah Rose, Peter Jenner, Mahmoud M Iravani
Parkinson's disease (PD) is the second most common neurodegenerative disorder producing a variety of motor and cognitive deficits with the causes remaining largely unknown. The gradual loss of the nigrostriatal pathway is currently considered the pivotal pathological event. To better understand the progression of PD and improve treatment management, defining the disease on a structural basis and expanding brain analysis to extra-nigral structures is indispensable. The anatomical complexity and the presence of neuromelanin, make the use of non-human primates an essential element in developing putative imaging biomarkers of PD...
2017: PloS One
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