469,653 results match your criteria vitro vivo


Review on the Recent Progress in the Development of Fluorescent ProbesTargeting Enzymes.

Methods Appl Fluoresc 2021 Apr 19. Epub 2021 Apr 19.

College of Chemistry, Central China Normal University, Wuhan, Wuhan, Hubei, Wuhan, CHINA.

Biomolecules are very important for biological processes in a living being, performing similar or multiple tasks in and out of cells, tissues and other organisms at a particular location. The abnormal activity of particular biomolecule usually caused serious diseases such as Alzheimer's disease, Parkinson's disease, cancers, diabetes, cardiovascular diseases, arthritis etc. Hence, nondestructive and real-time visualization for certain subcellular tissue is very important for understanding the biological issues, as well as the drug administration and drug metabolism. Read More

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Hydrogel from acellular porcine adipose tissue promotes survival of adipose tissue transplantation.

Biomed Mater 2021 Apr 19. Epub 2021 Apr 19.

Department of Breast Surgery, Clinical Research Center for Breast, Sichuan University West China Hospital, No.37 Guoxuexiang, Chengdu, Sichuan, China, Chengdu, Sichuan, 610041, CHINA.

Lipofilling is a popular technique for soft tissue augmentation, limited by unpredictable graft survival. This study aimed at exploring the effect of hydrogel from acellular porcine adipose tissue (HAPA) on angiogenesis and survival of adipose tissue used for lipofilling. The effect of HAPA on adipose-derived stem cells (ADSCs) proliferation, adipogenic differentiation, and vascular endothelial growth factor (VEGF) secretion were evaluated in hypoxia and normoxia in vitro. Read More

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Tacrolimus inhibits oral carcinogenesis through cell cycle control.

Biomed Pharmacother 2021 Apr 16;139:111545. Epub 2021 Apr 16.

Hospital of Stomatology, Sun Yat-sen University, Guangzhou, PR, China; Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, PR, China; Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, PR, China. Electronic address:

Tacrolimus (TAC, FK506) is a major calcineurin inhibitor and has been commonly used in treatments of patients with organ transplants and immune diseases. Moreover, tacrolimus is recommended by the treatment guidelines for oral potentially malignant disorders (OPMDs) such as oral lichen planus (OLP). However, whether tacrolimus increases the risk of cancer remains controversial. Read More

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A comprehensive approach for the validation of lumbar spine finite element models investigating post-fusion adjacent segment effects.

Authors:
A Azadi N Arjmand

J Biomech 2021 Apr 15;121:110430. Epub 2021 Apr 15.

Department of Mechanical Engineering, Sharif University of Technology, Tehran, Iran. Electronic address:

Spinal fusion surgery is usually followed by accelerated degenerative changes in the unfused segments above and below the treated segment(s), i.e., adjacent segment disease (ASD). Read More

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Amphiphilic peptide-based MMP3 inhibitors for intra-articular treatment of knee OA.

Bioorg Med Chem 2021 Apr 2;38:116132. Epub 2021 Apr 2.

Fidia Farmaceutici S.p.A., via Ponte della Fabbrica 3/A, 35031 Abano Terme (PD), Italy.

Since 2007, Metalloproteases (MMPs) have been considered potential targets for treating osteoarthritis (OA), for which the primary pathogenic event is the extensive degeneration of articular cartilage. MMP3 is an enzyme critical for these degenerative changes. However, problems of selectivity, low bioavailability and poor metabolic profile during clinical trials of MMPs inhibitors (MMPIs) led to limited beneficial effect and thus did not justify further pursuit of the clinical studies. Read More

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Ataluren metabolism: Ataluren-O-1β-acyl glucuronide is a stable circulating metabolite in mouse, rat, dog and human.

Drug Metab Pharmacokinet 2021 Mar 30;38:100393. Epub 2021 Mar 30.

PTC Therapeutics, Inc., South Plainfield, NJ, USA. Electronic address:

Ataluren is an aromatic acid derivative with a 1,2,4-oxodiazole moiety. Ataluren-O-1β-acyl glucuronide is a prominent circulatory metabolite in mice, rats, dogs, and humans following oral administration of ataluren. The objective of this paper was to evaluate the stability in vitro and in vivo of ataluren-O-1β-acyl glucuronide metabolite. Read More

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In vitro toxic synergistic effects of exogenous pollutants-trimethylamine and its metabolites on human respiratory tract cells.

Sci Total Environ 2021 Apr 6;783:146915. Epub 2021 Apr 6.

Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Institute of Environmental Health and Pollution control, Guangdong University of Technology, Guangzhou 510006, China; Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, Key Laboratory of City Cluster Environmental Safety and Green Development (Department of Education, China), School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China.

The wide presence of volatile organic amines in atmosphere has been clarified to relate to adverse effects on human respiratory health. However, toxic effects of them on human respiratory tract and their metabiotic mechanism of in vivo transformation have not been elucidated yet. Herein, cell viability and production of reactive oxygen species (ROSs) were first investigated during acute exposure of trimethylamine (TMA) to bronchial epithelial cells (16HBE), along with identification of toxic metabolites and metabolic mechanisms of TMA from headspace atmosphere and cell culture. Read More

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Doped-carbon dots: Recent advances in their biosensing, bioimaging and therapy applications.

Colloids Surf B Biointerfaces 2021 Apr 5;203:111743. Epub 2021 Apr 5.

Department of Analytical Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz 5166616471, Iran.

As a fascinating class of fluorescent carbon dots (CDs), doped-CDs are now sparked intense research interest, particularly in the diverse fields of biomedical applications due to their unique advantages, including low toxicity, physicochemical, photostability, excellent biocompatibility, and so on. In this review, we have summarized the most recent developments in the literature regarding the employment of doped-CDs for pharmaceutical and medical applications, which are published over approximately the past five years. Accordingly, we discuss the toxicity and optical properties of these nanomaterials. Read More

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Efficient in vitro and in vivo docetaxel delivery mediated by pH-sensitive LPHNPs for effective breast cancer therapy.

Colloids Surf B Biointerfaces 2021 Apr 11;203:111760. Epub 2021 Apr 11.

Department of Medicine, Division of Gastroenterology, Hepatology and Nutrition, Vanderbilt University Medical Centre (VUMC), 2215 Garland Avenue, 1075 Lab Suite MRB IV, Nashville, TN, 37232, USA; Biomedical Parasitology and Nano-immunology Lab, CSIR Institute of Microbial Technology (IMTECH), CH, India. Electronic address:

The present study was designed to develop pH-sensitive lipid polymer hybrid nanoparticles (pHS-LPHNPs) for specific cytosolic-delivery of docetaxel (DTX). The pHS-LPHNPs-DTX formulation was prepared by self-assembled nano-precipitation technique and characterized for zeta potential, particle size, entrapment efficiency, polydispersity index (PDI), and in vitro drug release. In vitro cytotoxicity of pHS-LPHNPs-DTX was assessed on breast cancer cells (MDA-MB-231 and MCF-7) and compared with DTX-loaded conventional LPHNPs and bare DTX. Read More

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In vivo and in vitro α-amanitin metabolism studies using molecular networking.

Toxicol Lett 2021 Apr 16. Epub 2021 Apr 16.

Univ Rennes, INSERM, INRAE, CHU Rennes, Institut NuMeCan (Nutrition, Metabolism and Cancer), PREVITOX network, F-35033, Rennes, France; Rennes University Hospital, Forensic Toxicology Laboratory, F-35033, Rennes, France.

Amanitin poisonings are among the most life-threatening mushroom poisonings, and are mainly caused by the genus Amanita. Hepatotoxicity is the hallmark of amanitins, powerful toxins contained in these mushrooms, and can require liver transplant. Among amatoxins, α-amanitin is the most studied. Read More

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Effect of type II diabetes-induced osteoarthritis on articular cartilage aging in rats: A study in vivo and in vitro.

Exp Gerontol 2021 Apr 16:111354. Epub 2021 Apr 16.

Laboratory of the Provincial Education Department of Heilongjiang for Common Animal Disease Prevention and Treatment, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China. Electronic address:

Objectives: Some evidence suggests that type II diabetes mellitus (T2DM) and osteoarthritis (OA) usually occur together clinically, and the symptoms are more obvious compared with non-diabetic patients with OA. We aimed to explore the effects in cartilage degradation, damage, and aging after T2DM combined with OA.

Methods: Thirty male Sprague-Dawley (SD) rats were randomly divided into the young-control group (YCG, n = 10), old-control group (OCG, n = 10), and old T2DM-induced OA group (OTOG, n = 10) after the pre-experiment. Read More

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Down-regulation of NAA10 mediates the neuroprotection induced by sevoflurane preconditioning via regulating ERK1/2 phosphorylation.

Neurosci Lett 2021 Apr 16:135897. Epub 2021 Apr 16.

Department of Anesthesiology, Shanghai Sixth People's Hospital East Affiliated to Shanghai University of Medicine & Health Sciences, China. Electronic address:

Objective: In the present study, the regulation mechanism of NAA10 (N-Alpha-Acetyltransferase 10) in sevoflurane preconditioning induced neuroprotective effect was explored.

Methods: Firstly, si-NAA10 or negative control (NC) were constructed for cell transfection and injected into intracerebroventricular of rats. Oxygen-glucose deprivation/reperfusion (OGD/R) model in vitro and middle cerebral artery occlusion (MCAO) model in vivo were established to simulate cerebral I/R injury. Read More

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Pancreatic cancer cells-derived exosomal long non-coding RNA CCAT1/microRNA-138-5p/HMGA1 axis promotes tumor angiogenesis.

Life Sci 2021 Apr 16:119495. Epub 2021 Apr 16.

Department of Pancreatic Surgery, The First Affiliated Hospital of Xinjiang Medical University, Urumqi Municipality 830054, Xinjiang, China.

Objective: Pancreatic cancer (PC) cells-derived exosomes could mediate angiogenesis of human microvascular endothelial cells (HUVECs) in PC. Considering that, this research was implemented to figure out the concrete role of PC cells-derived exosomal long non-coding RNA colon cancer-associated transcript-1 (CCAT1) in PC with its regulation on microRNA-138-5p/high mobility group A1 (miR-138-5p/HMGA1) axis.

Methods: PC tissues and normal tissues were resected. Read More

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K3.1 channels regulate the rate of critical period plasticity.

Neurosci Res 2021 Apr 16. Epub 2021 Apr 16.

Laboratory for Neuronal Circuit Development, RIKEN Brain Science Institute, 2-1 Hirosawa, Wako-shi, Saitama, 351-0198, Japan; International Research Center for Neuorintelligence, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113, Japan; Center for Brain Science, Department of Molecular Cellular Biology, Harvard University, 52 Oxford Street, Cambridge, MA, 02138, USA. Electronic address:

Experience-dependent plasticity within visual cortex is controlled by postnatal maturation of inhibitory circuits, which are both morphologically diverse and precisely connected. Gene-targeted disruption of the voltage-dependent potassium channel K3.1 broadens action potentials and reduces net inhibitory function of parvalbumin (PV)-positive GABA subtypes within the neocortex. Read More

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Structural characteristics and in vitro and in vivo immunoregulatory properties of a gluco-arabinan from Angelica dahurica.

Int J Biol Macromol 2021 Apr 16. Epub 2021 Apr 16.

State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300350, People's Republic of China. Electronic address:

A water-soluble polysaccharide identified here as ADP80-2 was acquired from Angelica dahurica. ADP80-2 was a gluco-arabinan composed of arabinose and a trace of glucose with a molecular weight of 9950 g/mol. The major backbone of ADP80-2 comprised of →5)-α-L-Araf-(1→, →3, 5)-α-L-Araf-(1→, →6)-α-D-Glcp-(1→, with a terminal branch α-L-Araf-(1 → residue. Read More

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Environmental estrogens inhibit the expression of insulin-like growth factor mRNAs in rainbow trout in vitro by altering activation of the JAK-STAT, AKT-PI3K, and ERK signaling pathways.

Gen Comp Endocrinol 2021 Apr 16:113792. Epub 2021 Apr 16.

Department of Biological Sciences, Texas Tech University, Lubbock, TX 79409, USA. Electronic address:

Environmental estrogens (EE) have been found to disrupt a host of developmental, reproductive, metabolic, and osmoregulatory process in a wide-range of animals, particularly those in aquatic ecosystems where such compounds concentrate. Previously, we showed that EE inhibited post-embryonic organismal growth of rainbow trout in vivo, but the precise mechanism(s) through which EE exert their growth inhibiting effects remain unknown. In this study, we used rainbow trout (Oncorhynchus mykiss) as a model to investigate the direct effects of 17β-estradiol (E2), β-sitosterol (βS), and 4-n-nonylphenol (NP) on the synthesis of insulin-like growth factors (IGFs) and to elucidate the mechanism(s) by which EEs exert such effects. Read More

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Modeling Immunity In Vitro: Slices, Chips, and Engineered Tissues.

Annu Rev Biomed Eng 2021 Apr 19. Epub 2021 Apr 19.

Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, USA.

Modeling immunity in vitro has the potential to be a powerful tool for investigating fundamental biological questions, informing therapeutics and vaccines, and providing new insight into disease progression. There are two major elements to immunity that are necessary to model: primary immune tissues and peripheral tissues with immune components. Here, we systematically review progress made along three strategies to modeling immunity: ex vivo cultures, which preserve native tissue structure; microfluidic devices, which constitute a versatile approach to providing physiologically relevant fluid flow and environmental control; and engineered tissues, which provide precise control of the 3D microenvironment and biophysical cues. Read More

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Radiolabeling Optimization and Preclinical Evaluation of the New PSMA Imaging Agent [F]AlF-P16-093.

Bioconjug Chem 2021 Apr 19. Epub 2021 Apr 19.

Five Eleven Pharma Inc., Philadelphia, Pennsylvania 19104, United States.

Prostate-specific membrane antigen (PSMA)-targeted radioligands have played an increasing role in the diagnosis of prostate cancer. [Ga]Ga-P16-093 is a PSMA-targeting agent for positron emission tomography imaging, currently under a Phase 2 clinical trial. In the present study, P16-093 was labeled with F via [F]AlF complex formation, and the biological properties of [F]AlF-P16-093 were evaluated. Read More

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Structural variation affecting DNA backbone interactions underlies adaptation of B3 DNA binding domains to constraints imposed by protein architecture.

Nucleic Acids Res 2021 Apr 19. Epub 2021 Apr 19.

Horticultural Sciences Department, Plant Molecular and Cellular Biology Program, University of Florida, Gainesville, FL 32611-0690, USA.

Functional and architectural diversification of transcription factor families has played a central role in the independent evolution of complex development in plants and animals. Here, we investigate the role of architectural constraints on evolution of B3 DNA binding domains that regulate plant embryogenesis. B3 domains of ABI3, FUS3, LEC2 and VAL1 proteins recognize the same cis-element. Read More

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Plasmacytoid dendritic cells have divergent effects on HIV infection of initial target cells and induce a pro-retention phenotype.

PLoS Pathog 2021 Apr 19;17(4):e1009522. Epub 2021 Apr 19.

Centre for Virus Research, The Westmead Institute for Medical Research, Westmead, New South Wales, Australia.

Although HIV infection inhibits interferon responses in its target cells in vitro, interferon signatures can be detected in vivo soon after sexual transmission, mainly attributed to plasmacytoid dendritic cells (pDCs). In this study, we examined the physiological contributions of pDCs to early HIV acquisition using coculture models of pDCs with myeloid DCs, macrophages and the resting central, transitional and effector memory CD4 T cell subsets. pDCs impacted infection in a cell-specific manner. Read More

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Inhibition of dual leucine zipper kinase prevents chemotherapy-induced peripheral neuropathy and cognitive impairments.

Pain 2021 Apr 15. Epub 2021 Apr 15.

The Neurodegeneration Consortium, Therapeutics Discovery Division, The University of Texas MD Anderson Cancer Center, Houston, TX, United States Laboratories of Neuroimmunology, Department of Symptom Research, The University of Texas MD Anderson Cancer Center, Houston, TX, United States Cancer Neuroscience Lab, School of Nursing, Department of Diagnostic Medicine, LIVESTRONG Cancer Institutes, University of Texas at Austin, Austin, TX, United States Institute for Applied Cancer Science, Therapeutics Discovery Division, The University of Texas MD Anderson Cancer Center, Houston, TX, United States Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States.

Abstract: Chemotherapy-induced peripheral neuropathy (CIPN) and chemotherapy-induced cognitive impairments (CICI) are common, often severe neurotoxic side effects of cancer treatment that greatly reduce quality of life of cancer patients and survivors. Currently, there are no Food and Drug Administration-approved agents for the prevention or curative treatment of CIPN or CICI. The dual leucine zipper kinase (DLK) is a key mediator of axonal degeneration that is localized to axons and coordinates the neuronal response to injury. Read More

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Exosomes derived from mycobacterium tuberculosis-infected MSCs induce a pro-inflammatory response of macrophages.

Aging (Albany NY) 2021 Apr 19;13. Epub 2021 Apr 19.

Department of Senile Diseases, Dongying City Shengli Hospital, Dongying, Shandong Province, China.

Tuberculosis (TB) is a common infectious disease caused by Mycobacterium tuberculosis (M.tb), and macrophages serve as the primary natural host of M.tb. Read More

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Implementation of a novel 288-element dual-frequency array for acoustic angiography: in vitro & in vivo characterization.

IEEE Trans Ultrason Ferroelectr Freq Control 2021 Apr 19;PP. Epub 2021 Apr 19.

Acoustic angiography is a superharmonic contrast-enhanced ultrasound imaging method that produces high-resolution, three-dimensional maps of the microvasculature. Previous acoustic angiography studies have used two-element, annular, mechanically actuated transducers (called "wobblers") to image microvasculature in preclinical tumor models with high contrast-to-tissue ratio and resolution, but these early wobbler transducers could not achieve the depth and sensitivity required for clinical acoustic angiography. In this work, we present a system for performing acoustic angiography with a novel dual-frequency transducer - a coaxially stacked dual-frequency array. Read More

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Antidiarrheal, Antimicrobial, and Antioxidant Properties of the Aqueous Extract of Tunisian Persimmon ( Thunb.) Fruits.

J Med Food 2021 Apr 19. Epub 2021 Apr 19.

Unit of Functional Physiology and Valorization of Bio-Resources, University of Jendouba, Higher Institute of Biotechnology of Béja, Béja, Tunisia.

Medicinal plants were used to prevent and treat numerous gastrointestinal disorders owing, in part, to their antioxidant capacity. The protective effects of fruit aqueous extract (DKFAE) against castor oil (CO)-induced diarrhea was studied. The antioxidant and antibacterial properties were investigated using colorimetric and biochemical analyses. Read More

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Ascorbic Acid and Iron Supplement Treatment Improves Stem Cell-Mediated Cartilage Regeneration in a Minipig Model.

Am J Sports Med 2021 Apr 19:3635465211005754. Epub 2021 Apr 19.

Molecular Imaging Program at Stanford, Department of Radiology, School of Medicine, Stanford University, Stanford, California, USA.

Background: The transplantation of mesenchymal stem cells (MSCs) into cartilage defects has led to variable cartilage repair outcomes. Previous in vitro studies have shown that ascorbic acid and reduced iron independently can improve the chondrogenic differentiation of MSCs. However, the combined effect of ascorbic acid and iron supplementation on MSC differentiation has not been investigated. Read More

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Design, Synthesis, and Structure-Activity Relationship of Quinazolinone Derivatives as Potential Fungicides.

J Agric Food Chem 2021 Apr 19. Epub 2021 Apr 19.

School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China.

Plant diseases caused by phytopathogenic fungi reduce the yield and quality of crops. To develop novel antifungal agents, we designed and synthesized eight series of quinazolinone derivatives and evaluated their anti-phytopathogenic fungal activity. The bioassay results revealed that compounds , , , , , , and exhibited remarkable antifungal activity . Read More

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Optimizing an Antioxidant TEMPO Copolymer for Reactive Oxygen Species Scavenging and Anti-Inflammatory Effects .

Bioconjug Chem 2021 Apr 19. Epub 2021 Apr 19.

Department of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee 37232, United States.

Oxidative stress is broadly implicated in chronic, inflammatory diseases because it causes protein and lipid damage, cell death, and stimulation of inflammatory signaling. Supplementation of innate antioxidant mechanisms with drugs such as the superoxide dismutase (SOD) mimetic compound 2,2,6,6-tetramethylpiperidin-1-oxyl (TEMPO) is a promising strategy for reducing oxidative stress-driven pathologies. TEMPO is inexpensive to produce and has strong antioxidant activity, but it is limited as a drug due to rapid clearance from the body. Read More

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Modeling Airway Dysfunction in Asthma Using Synthetic Mucus Biomaterials.

ACS Biomater Sci Eng 2021 Apr 19. Epub 2021 Apr 19.

Fischell Department of Bioengineering, University of Maryland, College Park, Maryland 20742, United States.

As asthma worsens, occlusion of airways with mucus significantly contributes to airflow obstruction and reduced lung function. Recent evidence from clinical studies has shown mucus obtained from adults and children with asthma possesses altered mucin composition. However, how these changes alter the functional properties of the mucus gel is not yet fully understood. Read More

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A Cooperatively Activatable, DNA-based Fluorescent Reporter for Imaging of Correlated Enzymatic Activities.

Angew Chem Int Ed Engl 2021 Apr 19. Epub 2021 Apr 19.

National Center for Nanoscience and Technology, CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, 11 ZhongGuanCun BeiYiTiao, Haidian District, 100190, Beijing, CHINA.

The dynamic variation of the expression profile and spatial landscape of multiple enzymes are crucial factors influencing tumor progression and drug treatment. However, the comprehensive analysis of these events has been hampered by the limitations of existing imaging technologies. Here we reported a cooperatively activatable, DNA-based fluorescent reporter programmed to detect the correlated activity of dual enzymes, telomerase (TE) and apurinic/apyrimidinic endonuclease 1 (APE1), both in vitro and in vivo. Read More

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Design, Synthesis and Antifungal/Anti-Oomycete Activity of Pyrazolyl Oxime Ethers as Novel Potential Succinate Dehydrogenase Inhibitors.

Pest Manag Sci 2021 Apr 19. Epub 2021 Apr 19.

Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science,China Agricultural University, Beijing, 100193, China.

Background: Succinate dehydrogenase inhibitors (SDHIs) play an increasingly important role in controlling plant diseases. However, the similar structures of SDHIs result in rapid development of cross-resistance development and a clear bottleneck of poor activity against oomycetes. Therefore, the need to seek new SDHI fungicides with novel structure is urgent. Read More

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