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in vitro diagnostics

Or Perlman, Iris S Weitz, Sarit Sivan, Hiba Abu-Khalla, Madeleine Benguigui, Yuval Shaked, Haim Azhari
Copper oxide nanoparticles (CuO-NPs) are increasingly investigated for diagnostic and therapeutic purposes. Recent work have demonstrated their anticancer potential as well as contrast agent capabilities for magnetic resonance imaging (MRI) and through-transmission ultrasound. However, no capabilities of CuO-NPS were demonstrated using conventional ultrasound systems, which, unlike the formers, are widely deployed in the clinic. Furthermore, in spite of their potential as multifunctional nano-based materials for diagnosis and therapy, CuO-NPs were delayed from further clinical translation due to their inherent toxicity...
February 16, 2018: Nanotechnology
Sakib F Elahi, Seung Yup Lee, William R Lloyd, Leng-Chun Chen, Shiuhyang Kuo, Ying Zhou, Hyungjin Myra Kim, Robert Kennedy, Cynthia Marcelo, Stephen E Feinberg, Mary-Ann Mycek
Fluorescence lifetime sensing has been shown to noninvasively characterize the pre-implantation health and viability of engineered tissue constructs. However, current practices to monitor post-implantation construct integration are either qualitative (visual assessment) or destructive (tissue histology). We employed label-free fluorescence lifetime spectroscopy for quantitative, noninvasive optical assessment of engineered tissue constructs that were implanted in a murine model. The portable system was designed to be suitable for intravital measurements and included a handheld probe to precisely and rapidly acquire data at multiple sites per construct...
February 16, 2018: Tissue Engineering. Part C, Methods
Carla Tatone, Giovanna Di Emidio, Arcangelo Barbonetti, Gaspare Carta, Alberto M Luciano, Stefano Falone, Fernanda Amicarelli
BACKGROUND: Sirtuins (SIRT1-7) are a family of NAD+-dependent deacetylases that catalyze post-translational modifications of proteins. Together, they respond to metabolic challenges, inflammatory signals or hypoxic/oxidative stress, and are associated with aging and longevity. The role of Sirtuins in the regulation of fertility emerged in 2003 when a defective reproductive phenotype was observed in SIRT1-null mice. Although studies on Sirtuins in reproductive biology have been increasing in the last years, a recent comprehensive update on this issue is still lacking...
February 13, 2018: Human Reproduction Update
Luminita Simion Labusca, Dumitru-Daniel Herea, Ecaterina Radu, Camelia Danceanu, Horia Chiriac, Nicoleta Lupu
The use of materials at nanoscale is currently of increasing interest for life sciences and medicine. Magnetic nanoparticles (MNPs) are under scrutiny for a large array of applications in nanomedicine as diagnostic and therapeutic tools. Proprietary Fe-Cr-Nb-B MNPs display heating properties that recommends them as potent agents for delivery of local hyperthermia for the treatment of solid tumours. Stem cell mediated delivery represents a safe and accurate modality to target remote or metastatic tumour sites...
July 1, 2018: Journal of Nanoscience and Nanotechnology
Svenja Memmert, A V B Nogueira, A Damanaki, M Nokhbehsaim, S Eick, T Divnic-Resnik, A Spahr, B Rath-Deschner, A Till, W Götz, J A Cirelli, A Jäger, J Deschner
OBJECTIVES: Damage-regulated autophagy modulator (DRAM) 1 is a p53 target gene with possible involvement in oral inflammation and infection. This study sought to examine the presence and regulation of DRAM1 in periodontal diseases. MATERIAL AND METHODS: In vitro, human periodontal ligament fibroblasts were exposed to interleukin (IL)-1β and Fusobacterium nucleatum for up to 2 days. The DRAM1 synthesis and its regulation were analyzed by real-time PCR, immunocytochemistry, and ELISA...
February 13, 2018: Clinical Oral Investigations
Yixia Qian, Weizhi Wang, Zihua Wang, Xiangqian Jia, Qiuju Han, Iman Rostami, Yuehua Wang, Zhiyuan Hu
Mild acidic environment and angiogenesis are two typical characteristics of tumor. The specific response towards both lower pH and angiogenesis may enhance the targeting ability both for drug and diagnostic probe delivery. Herein, we present a kind of dual responding self-assembled nanotransformation materials which are tumor angiogenesis targeting and pH triggered based on amphiphilic conjugation between peptide (STP) and aromatic molecule (TPE). The morphology of the self-assembled peptide-conjugates is responsibly changed from nanoparticles in neutral condition to nanofibers in acidic condition, which "turn on" the in vivo targeting imaging and accelerated the efficient drug delivery and in vivo therapy...
February 14, 2018: ACS Applied Materials & Interfaces
Divya Bhagirath, Thao Ly Yang, Nathan Bucay, Kirandeep Sekhon, Shahana Majid, Varahram Shahryari, Rajvir Dahiya, Yuichiro Tanaka, Sharanjot Saini
Due to high heterogeneity, molecular characterization of prostate cancer (PCa) based on biopsy sampling is often challenging. Hence, a minimally invasive method to determine the molecular imprints of a patient's tumor for risk stratification would be advantageous. In this study, we employ a novel, digital amplification-free quantification method using the nCounter technology (Nanostring Technologies) to profile exosomal serum miRNAs (ex-miRNA) from aggressive PCa cases, benign prostatic hyperplasia (BPH), and disease-free controls...
February 1, 2018: Cancer Research
De-Yong Gao, Yun Ling, Xiao-Li Lou, Ying-Ying Wang, Liang-Ming Liu
The gametocyte-specific factor 1 (GTSF1) gene participates in DNA methylation and retrotransposon activation in germ cells, particularly during cell proliferation. The present study aimed to assess the level of GTSF1 gene expression in liver cancer tumor tissues, and its role in human hepatoma cell lines in vitro and in a nude mouse model in vivo. GTSF1 gene expression was detected in liver cancer tumor tissues, compared with in healthy controls, via reverse transcription quantitative polymerase chain reaction...
March 2018: Oncology Letters
Jiri Sana, Petr Busek, Pavel Fadrus, Andrej Besse, Lenka Radova, Marek Vecera, Stefan Reguli, Lucie Stollinova Sromova, Marek Hilser, Radim Lipina, Radek Lakomy, Leos Kren, Martin Smrcka, Aleksi Sedo, Ondrej Slaby
Glioblastoma stem-like cells (GSCs) are critical for the aggressiveness and progression of glioblastoma (GBM) and contribute to its resistance to adjuvant treatment. MicroRNAs (miRNAs) are small, non-coding RNAs controlling gene expression at the post-transcriptional level, which are known to be important regulators of the stem-like features. Moreover, miRNAs have been previously proved to be promising diagnostic biomarkers in several cancers including GBM. Using global expression analysis of miRNAs in 10 paired in-vitro as well as in-vivo characterized primary GSC and non-stem glioblastoma cultures, we identified a miRNA signature associated with the stem-like phenotype in GBM...
February 12, 2018: Scientific Reports
Mutsumi Miyauchi, Min Ao, Hisako Furusho, Chanbora Chea, Atsuhiro Nagasaki, Shinnichi Sakamoto, Toshinori Ando, Toshihiro Inubushi, Katsuyuki Kozai, Takashi Takata
Dental infection is risk for preterm birth (PTB) through unclear mechanisms. We established a dental infection-induced PTB mouse model, in which Porphyromonas gingivalis (P.g.) induced PTB by 2 days. We analysed pathogenic factors contributing to PTB and their effects on trophoblasts in vitro. TNF-α, IL-8, and COX-2 were upregulated in P.g.-infected placenta. Galectin-3 (Gal-3), an immune regulator, was significantly upregulated in placenta, amniotic fluid, and serum. In vitro, P.g.-lipopolysaccharide (P.g...
February 12, 2018: Scientific Reports
A Yu Sdobnov, M E Darvin, E A Genina, A N Bashkatov, J Lademann, V V Tuchin
This paper aims to review recent progress in optical clearing of the skin and over naturally turbid biological tissues and blood using this technique in vivo and in vitro with multiphoton microscopy, confocal Raman microscopy, confocal microscopy, NIR spectroscopy, optical coherence tomography, and laser speckle contrast imaging. Basic principles of the technique, its safety, advantages and limitations are discussed. The application of optical clearing agent on a tissue allows for controlling the optical properties of tissue...
February 3, 2018: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
Zhi-Liang Wang, Chuan-Bao Zhang, Zheng Wang, Xiang-Qi Meng, Xiao-Juan Liu, Bo Han, Chun-Bin Duan, Jin-Quan Cai, Zhong-Fei Hao, Ming-Hui Chen, Tao Jiang, Yong-Li Li, Chuan-Lu Jiang, Hong-Jun Wang
Gliomas are characterized by a malignant phenotype with proliferation, cell cycle arrest and invasion. To explore the biological consequences of epigenetically regulated miRNAs, we performed a microarray based screening (whose expression was affected by 5-AZA treatment) followed by bisulfite sequencing validation. We found that miR-134 as an epigenetically regulated suppressor gene with prognostic value in gliomas. MicroRNA-134 was downregulated in high grade gliomas, especially in GBM samples. Functional studies in vitro and in vivo in mouse models showed that overexpression of miR-134 was sufficient to reduce cell cycle arrest, cell proliferation and invasion...
February 8, 2018: Carcinogenesis
Jyoti Bala, Srinivasan Chinnapaiyan, Rajib Kumar Dutta, Hoshang Unwalla
Aptamers are high affinity single-stranded nucleic acid or protein ligands which exhibit specificity and avidity comparable to, or exceeding that of antibodies and can be generated against most targets. The functionality of aptamers is based on their unique tertiary structure, complexity and their ability to attain unique binding pockets by folding. Aptamers are selected in vitro by a process called Systematic Evolution of Ligands by Exponential enrichment (SELEX). The Kd values for the selected aptamer are often in the picomolar to low nanomolar range...
February 12, 2018: RNA Biology
Hua Li, Daewoo Han, Giovanni M Pauletti, Andrew J Steckl
Increasing numbers of animals are diagnosed with thromboembolism, requiring anticoagulation treatment to prevent thrombotic events. Frequent and periodic coagulation monitoring is critical to ensure treatment effectiveness and patient safety by limiting blood coagulation ability within the desired therapeutic range. Point-of-care diagnostics is an ideal candidate for frequent coagulation monitoring due to rapid test results and no need for laboratory setting. This article reports the first utilization of no-reaction lateral flow assay (nrLFA) device for simple and low-cost animal blood coagulation monitoring in resource-limited setting...
January 2018: Biomicrofluidics
Anna Villar-Piqué, Matthias Schmitz, Niccolò Candelise, Salvador Ventura, Franc Llorens, Inga Zerr
The presence of protein deposits is a common pathological hallmark in patients suffering from neurodegenerative conditions and other proteinopathies. Deciphering the molecular basis of protein misfolding and aggregation is a crucial step towards the full comprehension of the factors that trigger the onset of these diseases and for the development of efficient therapeutical strategies. In this regard, in vitro aggregation assays for misfolded proteins offer an excellent tool to study pathological processes of protein deposition under controlled conditions, where confounders can be easily discriminated...
February 10, 2018: Molecular Neurobiology
Federica Braga, Sara Pasqualetti, Mauro Panteghini
Once an in-vitro diagnostic (IVD) measuring system has been marketed and introduced into daily practice, the possible sources of degradation of its performance are numerous. It is therefore essential to put in place a continuous post-market surveillance of the quality of performance of the IVD system and of the laboratories that perform measurements in clinical setting. The participation to external quality assessment (EQA) schemes that meet specific metrological criteria is central to the evaluation of performance of clinical laboratories in terms of standardization and clinical suitability of their measurements...
February 8, 2018: Clinical Biochemistry
Taylor C Brown, Norman G Nicolson, Reju Korah, Tobias Carling
BACKGROUND: B-Cell CLL/Lymphoma 9 (BCL9) is a recently described oncogene that promotes tumorigenesis via activation of the Wnt/β-Catenin signaling cascade. Though constitutively active Wnt/β-Catenin signaling is a molecular hallmark of adrenocortical carcinoma (ACC), a potential role for BCL9 to promote Wnt/β-Catenin pathway dysregulation in adrenocortical tumorigenesis remains to be elucidated. STUDY DESIGN: This study involved a retrospective analysis at a tertiary academic referral center of 27 patients with adrenocortical tumors, including in vitro investigation of BCL9...
February 8, 2018: Journal of the American College of Surgeons
Anne Bergougnoux, Valeria D'Argenio, Stefanie Sollfrank, Fanny Verneau, Antonella Telese, Irene Postiglione, Karl J Lackner, Mireille Claustres, Giuseppe Castaldo, Heidi Rossman, Francesco Salvatore, Caroline Raynal
BACKGROUND: Many European laboratories offer molecular genetic analysis of the CFTR gene using a wide range of methods to identify mutations causative of cystic fibrosis (CF) and CFTR-related disorders (CFTR-RDs). Next-generation sequencing (NGS) strategies are widely used in diagnostic practice, and CE marking is now required for most in vitro diagnostic (IVD) tests in Europe. The aim of this multicenter study, which involved three European laboratories specialized in CF molecular analysis, was to evaluate the performance of Multiplicom's CFTR MASTR Dx kit to obtain CE-IVD certification...
February 10, 2018: Clinical Chemistry and Laboratory Medicine: CCLM
Dario Di Nardo, Gianluca Gambarini, Silvia Capuani, Luca Testarelli
INTRODUCTION: This review analyzes the increasing role of magnetic resonance imaging (MRI) in dentistry and its relevance in endodontics. Limits and new strategies to develop MRI protocols for endodontic purposes are reported and discussed. METHODS: Eligible studies were identified by searching the PubMed databases. Only original articles on dental structures, anatomy, and endodontics investigated by in vitro and in vivo MRI were included in this review. Original articles on MRI in dentistry not concerning anatomy and endodontics were excluded...
February 6, 2018: Journal of Endodontics
G-D Gao, X-Y Liu, Y Lin, H-F Liu, G-J Zhang
OBJECTIVE: The purpose of this study was to explore the clinical significance and biological function of long noncoding RNA CASC9 (CASC9) in esophageal squamous cell carcinoma (ESCC). PATIENTS AND METHODS: Quantitative Real-time PCR (qRT-PCR) was used to determine the expression of CASC9 in ESCC tissues and cell lines. Receiver operating characteristic curves were used to evaluate the sensitivity and specificity of CASC9. The correlation between the CASC9 levels and the clinicopathological factors of the patients was also analyzed...
January 2018: European Review for Medical and Pharmacological Sciences
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