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https://www.readbyqxmd.com/read/27910223/synthesis-and-preliminary-evaluation-of-a-99m-tc-labeled-folate-pamam-dendrimer-for-fr-imaging
#1
Manli Song, Zhide Guo, Mengna Gao, Changrong Shi, Duo Xu, Linyi You, Xiaowei Wu, Xinhui Su, Rongqiang Zhuang, Weimin Pan, Ting Liu, Xianzhong Zhang
Folate receptor is an ideal target for tumor-specific diagnostic and therapeutic. The aim of this study was to synthesize (99m) Tc-labeled folate-polyamidoamine dendrimer modified with 2-hydrazinonicotinic acid ((99m) Tc-HP3 FA) for FR imaging. The (99m) Tc-HP3 FA conjugate was prepared using N-tris-(hydroxymethyl)-methylglycine and trisodium triphenylphosphine-3,3',3″-trisulfonate as coligands. Physicochemical properties, in vitro cell uptake study, and in vivo micro-single-photon emission computed tomography/CT imaging were performed...
November 7, 2016: Chemical Biology & Drug Design
https://www.readbyqxmd.com/read/27910018/fluorescence-in-situ-hybridization-probe-validation-for-clinical-use
#2
Jun Gu, Janice L Smith, Patricia K Dowling
In this chapter, we provide a systematic overview of the published guidelines and validation procedures for fluorescence in situ hybridization (FISH) probes for clinical diagnostic use. FISH probes-which are classified as molecular probes or analyte-specific reagents (ASRs)-have been extensively used in vitro for both clinical diagnosis and research. Most commercially available FISH probes in the United States are strictly regulated by the U.S. Food and Drug Administration (FDA), the Centers for Disease Control and Prevention (CDC), the Centers for Medicare & Medicaid Services (CMS) the Clinical Laboratory Improvement Amendments (CLIA), and the College of American Pathologists (CAP)...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27910012/chromosome-preparation-for-chronic-lymphoid-malignancies
#3
Dorota Koczkodaj, Agata A Filip
Conventional cytogenetics is invariably one of the most important methods used in diagnostics of chronic lymphoproliferations. It complements fluorescence in situ hybridization (FISH) and molecular analysis. Presence of particular chromosomal alterations in chronic lymphocytic leukemia enables patients' stratification into appropriate cytogenetic risk groups and influences treatment decisions. In other non-Hodgkin lymphomas cytogenetic analyses are employed also in minimal residual disease assessment.As lymphocytes in chronic lymphoid malignancies are characterized by low proliferation rate in vitro, it is critical to induce their division in the culture properly...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27909734/klf4-inhibits-tumor-growth-and-metastasis-by-targeting-microrna-31-in-human-hepatocellular-carcinoma
#4
Chuan Tian, Shanshan Yao, Li Liu, Youcheng Ding, Qingwang Ye, Xiao Dong, Yong Gao, Ning Yang, Qi Li
MicroRNAs (miRNAs or miRs) are short, endogenous non-coding RNA molecules, demonstrating abnormal expression in cancer initiation and progression. In this study, we profiled 18 differentially regulated miRNAs, including miRNA‑31, using miRNA array. Kruppel (or Krüppel)-like factor 4 (Klf4) is a transcription factor and putative tumor suppressor. Both were found to be significantly downregulated in liver cancer tissues and cells. However, little is known about the correlation between Klf4 and miRNA‑31 in hepatocellular carcinoma (HCC)...
November 24, 2016: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/27908894/contraction-of-blood-clots-is-impaired-in-acute-ischemic-stroke
#5
Valerie Tutwiler, Alina D Peshkova, Izabella A Andrianova, Dina R Khasanova, John W Weisel, Rustem I Litvinov
OBJECTIVE: Obstructive thrombi or thrombotic emboli are the pathogenic basis of ischemic stroke. In vitro blood clots and in vivo thrombi can undergo platelet-driven contraction (retraction), resulting in volume shrinkage. Clot contraction can potentially reduce vessel occlusion and improve blood flow past emboli or thrombi. The aim of this work was to examine a potential pathogenic role of clot contraction in ischemic stroke. APPROACH AND RESULTS: We used a novel automated method that enabled us to quantify time of initiation and extent and rate of clot contraction in vitro...
December 1, 2016: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/27906498/st3gal6-mediates-the-effect-of-mir-26a-on-cell-growth-migration-and-invasion-in-hepatocellular-carcinoma-via-the-akt-mtor-pathway
#6
Mingming Sun, Xuzi Zhao, Leilei Liang, Xufeng Pan, Hao Lv, Yongfu Zhao
Aberrant sialylation profiles on the cell surface have been recognized for their potential diagnostic value in identifying the regulation of tumor properties in several cancers, including hepatocellular carcinoma (HCC). Recently, increasing evidence has suggested that the deregulation of microRNA (miRNA) is a common feature in human cancers. In this study, we found obvious up-regulation of ST3GAL6 both in HCC cell lines and in tissue samples. The altered expression of ST3GAL6 was found to correlate with cell proliferation, migration and invasion ability in HCC...
December 1, 2016: Cancer Science
https://www.readbyqxmd.com/read/27903865/imaging-mitochondrial-dynamics-in-human-skin-reveals-depth-dependent-hypoxia-and-malignant-potential-for-diagnosis
#7
Dimitra Pouli, Mihaela Balu, Carlo A Alonzo, Zhiyi Liu, Kyle P Quinn, Francisca Rius-Diaz, Ronald M Harris, Kristen M Kelly, Bruce J Tromberg, Irene Georgakoudi
Active changes in mitochondrial structure and organization facilitate cellular homeostasis. Because aberrant mitochondrial dynamics are implicated in a variety of human diseases, their assessment is potentially useful for diagnosis, therapy, and disease monitoring. Because current techniques for evaluating mitochondrial morphology are invasive or necessitate mitochondria-specific dyes, their clinical translation is limited. We report that mitochondrial dynamics can be monitored in vivo, within intact human skin by relying entirely on endogenous two-photon-excited fluorescence from the reduced metabolic coenzyme nicotinamide adenine dinucleotide (NADH)...
November 30, 2016: Science Translational Medicine
https://www.readbyqxmd.com/read/27902468/synthesis-of-a-cell-penetrating-peptide-modified-superparamagnetic-iron-oxide-and-mri-detection-of-bladder-cancer
#8
Chen Ding, Kaijie Wu, Weiyi Wang, Zhenfeng Guan, Lei Wang, Xinyang Wang, Rong Wang, Li Liu, Jinhai Fan
Bladder cancer is the most common malignancy of the urinary tract for which the accurate measurement of minimal residual disease is critical to treatment and determining prognosis. Although cystoscope examination and voided urine cytology remain the current standard of care for detecting residual disease, these approaches are limited by mechanical trauma and lack sensitivity. To develop a new accurate noninvasive method, we developed a novel contrast agent where the surface of superparamagnetic iron oxide (SPIO) nanoparticles is functionalized with a bladder cancer-specific fluorescein isothiocyanate (FITC) labeled cell penetrating peptide (CPP)-polyarginine peptides (R11) for active targeting and imaging...
November 24, 2016: Oncotarget
https://www.readbyqxmd.com/read/27902422/microbiota-dysbiosis-a-new-piece-in-the-understanding-of-carcinogenesis-puzzle
#9
Valeria García-Castillo, Enrique Sanhueza, Eileen McNerney, Sergio A Onate, Apolinaria García
Cancer is defined as an uncontrolled proliferation of malignant cells in a host and it is one of the main causes of death worldwide. Genetic and environmental factors play an important role in its development and the involvement of microbial communities has also recently been recognized. The close relationship that characterizes the colonization of human commensal communities involves health risks particularly when the homeostasis is disturbed. It has been hypothesized that this process may lead to cancer by modulating the inflammatory response of the host, by the production of carcinogenic metabolic products or by the production of toxins which disrupt the cell cycle...
October 21, 2016: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/27898020/multivalent-aptamers-versatile-tools-for-diagnostic-and-therapeutic-applications
#10
REVIEW
Mariya Vorobyeva, Pavel Vorobjev, Alya Venyaminova
Nucleic acid aptamers generated through an in vitro selection are currently extensively applied as very valuable biomolecular tools thanks to their prominent advantages. Diversity of spatial structures, ease of production through chemical synthesis and a large variety of chemical modifications make aptamers convenient building blocks for the generation of multifunctional constructs. An opportunity to combine different aptamer functionalities with other molecules of interest such as reporter groups, nanoparticles, chemotherapeutic agents, siRNA or antisense oligonucleotides provides a widest range of applications of multivalent aptamers...
November 25, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27896916/dihydroartemisinin-counteracts-fibrotic-portal-hypertension-via-farnesoid-x-receptor-dependent-inhibition-of-hepatic-stellate-cell-contraction
#11
Wenxuan Xu, Chunfeng Lu, Feng Zhang, Jiangjuan Shao, Shunyu Yao, Shizhong Zheng
Portal hypertension is a frequent pathological symptom occurring especially in hepatic fibrosis and cirrhosis. Current paradigms indicate that inhibition of hepatic stellate cell (HSC) activation and contraction is anticipated to be an attractive therapeutic strategy, because activated HSC dominantly facilitates an increase in intrahepatic vein pressure through secreting extracellular matrix and contracting. Our previous in vitro study indicated that dihydroartemisinin (DHA) inhibited contractility of cultured HSC by activating intracellular farnesoid X receptor (FXR)...
November 7, 2016: FEBS Journal
https://www.readbyqxmd.com/read/27896778/lab-on-a-chip-multiplex-assays
#12
Harald Peter, Julia Wienke, Frank F Bier
Lab-on-a-chip multiplex assays allow a rapid identification of multiple parameters in an automated manner. Here we describe a lab-based preparation followed by a rapid and fully automated DNA microarray hybridization and readout in less than 10 min using the Fraunhofer in vitro diagnostics (ivD) platform to enable rapid identification of bacterial species and detection of antibiotic resistance. The use of DNA microarrays allows a fast adaptation of new biomarkers enabling the identification of different genes as well as single-nucleotide-polymorphisms (SNPs) within these genes...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27896591/design-and-in-vitro-evaluation-of-bispecific-complexes-and-drug-conjugates-of-anticancer-peptide-lyp-1-in-human-breast-cancer
#13
Selin Seda Timur, Prashant Bhattarai, Reyhan Neslihan Gürsoy, İmran Vural, Ban-An Khaw
PURPOSE: LyP-1, a nine-amino-acid tumor homing peptide, selectively binds to its cognate receptor, p32. Overexpression of p32 in certain tumors should allow use of LyP-1 as a targeting agent for the delivery of therapeutic or diagnostic agents. Peptide conjugates are developed for enhanced pre-targeting of MDA-MB-231 breast cancer cells with peptide-antibody bispecific complexes and targeting with multiple-drug/-fluorophore-conjugated nano-polymers. METHODS: LyP-1-anti-DTPA bispecific antibody complexes (LyP-1-bsAbCx) were generated by conjugation of anti-DTPA antibody and LyP-1...
November 28, 2016: Pharmaceutical Research
https://www.readbyqxmd.com/read/27895817/current-noninvasive-tests-for-colorectal-cancer-screening-an-overview-of-colorectal-cancer-screening-tests
#14
REVIEW
Le-Le Song, Yue-Min Li
Colorectal cancer (CRC) has become the third most common cancer in the world. Screening has been shown to be an effective way to identify early CRC and precancerous lesions, and to reduce its morbidity and mortality. Several types of noninvasive tests have been developed for CRC screening, including the fecal occult blood test (FOBT), the fecal immunochemical test (FIT), the fecal-based DNA test and the blood-based DNA test (the SEPT9 assay). FIT has replaced FOBT and become the major screening test due to high sensitivity, specificity and low costs...
November 15, 2016: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/27895813/cow-s-milk-allergy-towards-an-update-of-dracma-guidelines
#15
REVIEW
Alessandro Fiocchi, Lamia Dahda, Christophe Dupont, Cristina Campoy, Vincenzo Fierro, Antonio Nieto
BACKGROUND: In 2010, the diagnosis and treatment of IgE-mediated CMA were systematized in a GRADE guideline. OBJECTIVES & METHODS: After 6 years, the state of the knowledge in diagnosis and treatment of CMA has largely evolved. We summarize here the main advances, and exemplify indicating some specific points: studies aimed at better knowledge of the effects of breastfeeding and the production of new special formulae intended for the treatment of CMA. The literature (PubMed/MEDLINE) was searched using the following algorithms: (1) [milk allergy] AND diagnosis; (2) [milk allergy] AND [formul*] OR [breast*], setting the search engine [6-years] time and [human] limits...
2016: World Allergy Organization Journal
https://www.readbyqxmd.com/read/27895010/mutations-associated-with-decreased-susceptibility-to-seven-antimicrobial-families-in-field-and-laboratory-derived-mycoplasma-bovis-strains
#16
Kinga M Sulyok, Zsuzsa Kreizinger, Enikő Wehmann, Inna Lysnyansky, Krisztián Bányai, Szilvia Marton, Ákos Jerzsele, Zsuzsanna Rónai, Ibolya Turcsányi, László Makrai, Szilárd Jánosi, Sára Ágnes Nagy, Miklós Gyuranecz
The molecular mechanisms of resistance to fluoroquinolones, tetracyclines, an aminocyclitol, macrolides, a lincosamide, a phenicol and pleuromutilins were investigated in Mycoplasma bovis For the identification of mutations responsible for the high minimal inhibitory concentrations (MICs) to certain antibiotics, whole genome sequencing of 35 M. bovis field isolates and 36 laboratory-derived antibiotic resistant mutants was performed. In vitro resistant mutants were selected by serial passages of M. bovis in broth medium containing subinhibitory concentrations of the antibiotics...
November 28, 2016: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/27893376/a-modulated-excitation-imaging-system-for-intravascular-ultrasound
#17
Weibao Qiu, Xingying Wang, Yan Chen, Qiang Fu, Min Su, Lining Zhang, Jingjing Xia, Jiyan Dai, Yaonan Zhang, Hairong Zheng
Advances in methodologies and tools often lead to new insights into cardiovascular diseases. Intravascular ultrasound (IVUS) is a well-established diagnostic method that provides high-resolution images of the vessel wall and atherosclerotic plaques. High-frequency (>50 MHz) ultrasound enables the spatial resolution of IVUS to approach that of optical imaging methods. However, the penetration depth decreases when using higher imaging frequencies due to the greater acoustic attenuation. An imaging method that improves the penetration depth of high-resolution IVUS would therefore be of major clinical importance...
November 22, 2016: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/27891466/an-in-vitro-evaluation-of-retention-colonization-and-penetration-of-commonly-used-denture-lining-materials-by-candida-albicans
#18
Sushma Krishnamurthy, Rajendra B Hallikerimath
INTRODUCTION: Colonization of the surface by Candida albicans and related Candida species is one of the major concerns of denture lining materials. AIM: We evaluated retention, colonization and penetration of the four denture lining materials namely Molloplast B, Permaflex, GC Soft Liner and Ufi Gel Hard C by Candida albicans. MATERIAL AND METHODS: a) Evaluation of retention: Five test discs of each material with smooth surface on one side and rough on the other were prepared and surface roughness (Ra) was measured with profilometer...
October 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27889082/nod2-promotes-cell-proliferation-and-inflammatory-response-by-mediating-expression-of-tslp-in-human-airway-smooth-muscle-cells
#19
Gaoshun Ni, Yang Chen, Fengqin Wu, Pengxian Zhu, Liqiang Song
The newly discovered intracytosolic pattern recognition receptor nucleotide-binding oligomerization domain 2 (NOD2) has been studied as an important indicator of T helper 2 (Th2) inflammation, and its effect on regulatory T (Treg) cells is likely to modulate the immune response. In this study, we attempted to study the expression of NOD2 and its impact in human airway smooth muscle cells (HASMC). Quantitative real-time PCR (qRT-PCR) was used to measure the expression level of NOD2 in HASMC and comparisons were made between those from asthmatic and non-asthmatic donors; we found that NOD2 was significantly upregulated in asthma patient tissues and cell lines...
November 17, 2016: Cellular Immunology
https://www.readbyqxmd.com/read/27888803/exosomal-long-noncoding-rna-crnde-h-as-a-novel-serum-based-biomarker-for-diagnosis-and-prognosis-of-colorectal-cancer
#20
Tong Liu, Xin Zhang, Shanyu Gao, Fangmiao Jing, Yongmei Yang, Lutao Du, Guixi Zheng, Peilong Li, Chen Li, Chuanxin Wang
Cancer-secreted long non-coding RNAs (lncRNAs) are emerging mediators of cancer-host cross talk. The aim of our study was to illustrate the clinical significance of the lncRNA CRNDE-h in exosomes purified from the serum of patients with colorectal cancer (CRC). The study was divided into four parts: (1) The exosome isolated methods and lncRNA detected methods which accurately and reproducibly measure CRC-related exosomal CRNDE-h in serum were optimized in preliminary pilot stage; (2) The stability of exosomal CRNDE-h was evaluated systematically; (3) The origin of exosomal CRNDE-h was explorated in vitro and in vivo; (4) The diagnostic and prognostic value of exosomal CRNDE-h for CRC were validated in 468 patients...
November 19, 2016: Oncotarget
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