keyword
MENU ▼
Read by QxMD icon Read
search

formalin

keyword
https://www.readbyqxmd.com/read/28319867/phototherapeutic-spectrum-expansion-through-synergistic-effect-of-mesoporous-silica-trio-nanohybrids-against-antibiotic-resistant-gram-negative-bacterium
#1
Yaswanth Kuthati, Ranjith Kumar Kankala, Prabhakar Busa, Shi-Xiang Lin, Jin-Pei Deng, Chung-Yuan Mou, Chia-Hung Lee
The extensive impact of antibiotic resistance has led to the exploration of new anti-bacterial modalities. We designed copper impregnated mesoporous silica nanoparticles (Cu-MSN) with immobilizing silver nanoparticles (SNPs) to apply photodynamic inactivation (PDI) of antibiotic-resistant E. coli. SNPs were decorated over the Cu-MSN surfaces by coordination of silver ions on diamine-functionalized Cu-MSN and further reduced to silver nanoparticles with formalin. We demonstrate that silver is capable of sensitizing the gram-negative bacteria E...
March 7, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28317811/performance-of-the-xpert-mtb-rif-assay-in-the-diagnosis-of-tuberculosis-in-formalin-fixed-paraffin-embedded-tissues
#2
Pascal Polepole, Mwila Kabwe, Mpanga Kasonde, John Tembo, Aaron Shibemba, Justin O'Grady, Nathan Kapata, Alimuddin Zumla, Matthew Bates
OBJECTIVE/BACKGROUND: Extrapulmonary tuberculosis (EPTB), which accounts for 10%-40% of the global burden of TB, with the highest incidence in Sub-Saharan Africa, is strongly associated with human immunodeficiency virus infection. Diagnosing EPTB is challenging, and recently, there has been a concerted effort to evaluate the latest molecular diagnostics for diagnosing TB in a range of specimen types. The Xpert MTB/RIF assay (Cepheid, Sunnyvale, CA, USA) is one such technology, which simultaneously detects Mycobacterium tuberculosis and rifampicin resistance...
January 2017: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28316884/three-dimensional-visualisation-of-the-internal-anatomy-of-the-sparrowhawk-accipiter-nisus-forelimb-using-contrast-enhanced-micro-computed-tomography
#3
Fernanda Bribiesca-Contreras, William I Sellers
BACKGROUND: Gross dissection is a widespread method for studying animal anatomy, despite being highly destructive and time-consuming. X-ray computed tomography (CT) has been shown to be a non-destructive alternative for studying anatomical structures. However, in the past it has been limited to only being able to visualise mineralised tissues. In recent years, morphologists have started to use traditional X-ray contrast agents to allow the visualisation of soft tissue elements in the CT context...
2017: PeerJ
https://www.readbyqxmd.com/read/28315641/development-of-quantitative-real-time-pcr-assays-for-postmortem-detection-of-mycobacterium-spp-common-in-zebrafish-danio-rerio-research-colonies
#4
Danielle M Meritet, Donna M Mulrooney, Michael L Kent, Christiane V Löhr
Mycobacterium spp. infections are common in zebrafish kept in research facilities. These comorbidities can substantially modulate the responses of these fish to external and internal stimuli. Therefore, diagnostic tests to detect Mycobacterium spp. infections in zebrafish colonies prove essential. Here, we outline the development of quantitative simplex real-time PCR assays to detect the 3 Mycobacterium species most commonly identified in laboratory zebrafish. The assays targeted the heatshock protein 65 gene of M...
March 1, 2017: Journal of the American Association for Laboratory Animal Science: JAALAS
https://www.readbyqxmd.com/read/28315507/polymorphisms-and-mutations-in-gstp1-rad51-xrcc1-and-xrcc3-genes-in-breast-cancer-patients
#5
Mazhar Salim Al Zoubi, Katia Zavaglia, Chiara Mazanti, Mohammad Al Hamad, Khalid Al Batayneh, Alaa A A Aljabali, Generoso Bevilacqua
BACKGROUND: Genotoxic factors, including ionizing radiation and oxidative stress, are associated with genomic instability and development of breast cancer (BC). The homologous recombination DNA repair (HRR) pathway, base excision repair (BER) mechanism, and antioxidative enzymes are required as defense mechanisms against these DNA damaging agents. GSTP1, XRCC1, XRCC3 and RAD51 proteins are essential components of antioxidation, BER and HRR of DNA, respectively. Deficiencies in BER, HRR and antioxidation pathways are involved in the progression of cancer...
March 6, 2017: International Journal of Biological Markers
https://www.readbyqxmd.com/read/28315341/low-doses-of-tizanidine-synergize-the-anti-nociceptive-and-anti-inflammatory-effects-of-ketorolac-or-naproxen-while-reducing-of-side-effects
#6
Selene I Patiño-Camacho, Myrna Déciga-Campos, Karla Beltrán-Villalobos, Dalia A Castro-Vidal, Rosa M Montiel-Ruiz, Francisco J Flores-Murrieta
The aim of the present study was to determine whether tizanidine, an alpha2-adrenoceptor agonist, is able to increase the anti-inflammatory and anti-nociceptive effects of naproxen and ketorolac with a low incidence of gastric injury and spontaneous activity in rats. The anti-inflammatory effect was assayed in a carrageenan test, and oral administration of tizanidine (ED40 = 0.94 ± 0.2mg/kg), naproxen (ED40 = 3.18 ± 0.4mg/kg), and ketorolac (ED40 = 16.4 ± 1.9mg/kg) showed a dose-dependent effect on inflammation...
March 14, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28315246/system-wide-profiling-of-protein-amino-termini-from-formalin-fixed-paraffin-embedded-tissue-specimens-for-the-identification-of-novel-substrates
#7
Zon W Lai, Oliver Schilling
Clinical tissues are used for histopathological diagnosis of many diseases including immunostaining and morphology subtyping as well as in molecular research such as for the analyses of DNA, RNA, and proteins. Formalin fixation and paraffin embedment (FFPE) of tissue specimens is routinely used for preserving clinical tissues for long-term storage, allowing histopathological diagnosis of many diseases. As such, FFPE tissues currently represent the most comprehensive collection of all clinical specimens, allowing great source of material for research opportunity, possibly due to the concern of protein integrity from antigen retrieval from fixation process...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28314930/non-reproducible-sequence-artifacts-in-ffpe-tissue-an-experience-report
#8
Richard Ofner, Cathrin Ritter, Selma Ugurel, Lorenzo Cerroni, Mathias Stiller, Thomas Bogenrieder, Flavio Solca, David Schrama, Jürgen C Becker
BACKGROUND: Recent advances in sequencing technologies supported the development of molecularly targeted therapy in cancer patients. Thus, genomic analyses are becoming a routine part in clinical practice and accurate detection of actionable mutations is essential to assist diagnosis and therapy choice. However, this is often challenging due to major problems associated with DNA from formalin-fixed paraffin-embedded tissue which is usually the primary source for genetic testing. OBJECTIVES: Here we want to share our experience regarding major problems associated with FFPE DNA used for PCR-based sequencing as illustrated by the mutational analysis of ERBB4 in melanoma...
March 17, 2017: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/28306519/variability-in-variability-out-best-practice-recommendations-to-standardize-pre-analytical-variables-in-the-detection-of-circulating-and-tissue-micrornas
#9
Jenna Khan, Joshua A Lieberman, Christina M Lockwood
MicroRNAs (miRNAs) hold promise as biomarkers for a variety of disease processes and for determining cell differentiation. These short RNA species are robust, survive harsh treatment and storage conditions and may be extracted from blood and tissue. Pre-analytical variables are critical confounders in the analysis of miRNAs: we elucidate these and identify best practices for minimizing sample variation in blood and tissue specimens. Pre-analytical variables addressed include patient-intrinsic variation, time and temperature from sample collection to storage or processing, processing methods, contamination by cells and blood components, RNA extraction method, normalization, and storage time/conditions...
March 17, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28304255/neurocysticercosis-in-a-rhesus-macaque-macaca-mulatta
#10
Jessica M Johnston, Cecilia D Dyer, Susan Madison-Antenucci, Kimberly Am Mergen, Christin L Veeder, Angela K Brice
An 8-y-old, intact, male rhesus macaque (Macaca mulatta) was sedated to undergo MRI in preparation for the implantation of cranial hardware. During imaging, 9 focal lesions were noted in the brain and musculature of the head. The lesions were hyperechoic with hypoechoic rims. The animal was deemed inappropriate for neuroscience research, and euthanasia was elected. Gross examination revealed multiple round, thick-walled, fluid-filled cysts (diameter, approximately 0.5 cm) in multiple tissues: one each in the left caudal lung lobe, left masseter muscle, and the dura overlying the brain and 8 throughout the gray and white matter of the brain parenchyma...
December 1, 2016: Comparative Medicine
https://www.readbyqxmd.com/read/28303830/multiplex-polymerase-chain-reaction-for-the-detection-of-high-risk-human-papillomavirus-types-in-formalin-fixed-paraffin-embedded-cervical-tissues
#11
Mini P Singh, Nalini Gupta, T Deepak, Archit Kumar, Radha Kanta Ratho
Detecting high-risk-human papillomavirus (HPV) types has become an integral part of the cervical cancer screening programmes. This study aimed to develop a multiplex polymerase chain reaction (PCR) for identification of HPV types 16 and 18 along with the beta globin gene in formalin-fixed and paraffin-embedded cervical biopsy specimens. A total of 59 samples from patients with cervical abnormalities were tested. HPV 16 positivity was 50% in cervical cancers and 52.9% in cervical intraepithelial neoplasia. Our multiplex PCR protocol can be used as a simple and cost-effective tool for high-risk-HPV detection in cervical cancer screening programmes...
January 2017: Indian Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28302536/rna-chromogenic-in-situ-hybridization-assay-with-clinical-automated-platform-is-a-sensitive-method-in-detecting-high-risk-human-papillomavirus-in-squamous-cell-carcinoma
#12
Javier E Mendez-Pena, Peter M Sadow, Vania Nose, Mai P Hoang
Detection of active human papillomavirus (HPV) is clinically important, as its presence has been shown to correlate with favorable clinical outcomes and better response to treatment in oropharyngeal squamous cell carcinomas (SCC). Using a clinical automated platform, we compared the performance of commercially available HPV DNA and RNA in situ hybridization (ISH) probes in archival tissues of 57 SCC. Importantly, a clinical automated platform gives 1) consistent and reproducible results for HPV ISH and 2) better standardization across clinical laboratories...
March 13, 2017: Human Pathology
https://www.readbyqxmd.com/read/28302328/experimental-pseudomonas-aeruginosa-mediated-rhino-sinusitis-in-mink
#13
S Kirkeby, A S Hammer, N Høiby, C M Salomonsen
OBJECTIVES: The nasal and sinus cavities in children may serve as reservoirs for microorganisms that cause recurrent and chronic lung infections. This study evaluates whether the mink can be used as an animal model for studying Pseudomonas aeruginosa mediated rhino-sinusitis since there is no suitable traditional animal model for this disease. METHODS: Nasal tissue samples from infected and control mink were fixed in formalin, demineralized, and embedded in paraffin...
December 27, 2016: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28301023/optimizing-fixation-protocols-to-improve-molecular-analysis-from-ffpe-tissues
#14
Bruna Jalfim Maraschin, Viviane Palmeira da Silva, Leigha Rock, Huichen Sun, Fernanda Visioli, Pantelis Varvaki Rados, Miriam P Rosin
Most Departments of Pathology around the world have a considerable archive of formalin-fixed paraffin-embedded (FFPE) tissue suitable for molecular assessment. This article points out the potential DNA damage that may occur if basic steps are not followed during processing and storage of these samples. Furthermore, it hopes to establish parameters to optimize quality and quantity of DNA extracted from FFPE tissues.
January 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/28300573/concomitant-expression-of-ezrin-and-her2-predicts-distant-metastasis-and-poor-prognosis-of-patients-with-salivary-gland-carcinomas
#15
Kazuki Hashimoto, Ryuichi Hayashi, Takashi Mukaigawa, Manabu Yamazaki, Satoshi Fujii
Salivary gland carcinomas (SGCs) exhibit heterogeneous biological behaviors, including the formation of distant metastases, which is a critical event associated with poor prognosis. Ezrin, which is a member of the ezrin-radixin-moesin family of plasma membrane-cytoskeleton linker proteins, may provide a marker for metastasis and poor survival of patients with cancer. The aim of the present study was to investigate the relationship between ezrin expression and the expression of HER2, p53, and Ki-67 as well as clinicopathological factors in SGCs...
March 11, 2017: Human Pathology
https://www.readbyqxmd.com/read/28298747/benefits-and-pitfalls-of-cadavers-as-learning-tool-for-ultrasound-guided-regional-anesthesia
#16
REVIEW
Chhavi Sawhney, Sanjeev Lalwani, Bikash Ranjan Ray, Sumit Sinha, Abhyuday Kumar
Ultrasound-guided regional anesthesia (UGRA), like other basic skills, should be learnt in a simulation laboratory before performing on the patient. Cadavers provide an ideal tool for learning sonoanatomy and skills required for performing UGRA. On the basis of preservation technique used, the cadavers can be formalin embalmed cadavers, Thiel cadavers (soft cadavers), and fresh frozen cadavers. We compared three types of cadavers for performing ultrasound-guided upper and lower limb blocks. We observed that fresh frozen and Thiel cadavers were less smelling and had more realistic appearance as compared to formalin embalmed cadavers...
January 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/28298602/a-single-dose-recombinant-piv5-expressing-respiratory-syncytial-virus-f-and-g-proteins-protected-cotton-rats-and-african-green-monkeys-from-rsv-challenge
#17
Dai Wang, Shannon Phan, Daniel J DiStefano, Michael P Citron, Cheryl L Callahan, Lani Indrawati, Sheri A Dubey, Gwendolyn J Heidecker, Dhanasekaran Govindarajan, Xiaoping Liang, Biao He, Amy S Espeseth
Human respiratory syncytial virus (RSV) is a common cause of severe respiratory disease among infants, immunocompromised individuals and the elderly. No licensed vaccine is currently available. In this study, we evaluated two parainfluenza virus 5 (PIV5)-vectored vaccines expressing RSV F (PIV5/F) or G (PIV5/G) proteins in the cotton rat and African green monkey models for their replication, immunogenicity and efficacy of protection against RSV challenge. Following a single intranasal inoculation, both animal species shed the vaccine viruses for a limited time but without noticeable clinical symptoms...
March 15, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28298049/the-interpeduncular-fossa-approach-for-resection-of-ventromedial-midbrain-lesions
#18
M Yashar S Kalani, Kaan Yağmurlu, Robert F Spetzler
The authors describe the interpeduncular fossa safe entry zone as a route for resection of ventromedial midbrain lesions. To illustrate the utility of this novel safe entry zone, the authors provide clinical data from 2 patients who underwent contralateral orbitozygomatic transinterpeduncular fossa approaches to deep cavernous malformations located medial to the oculomotor nerve (cranial nerve [CN] III). These cases are supplemented by anatomical information from 6 formalin-fixed adult human brainstems and 4 silicone-injected adult human cadaveric heads on which the fiber dissection technique was used...
March 10, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28298014/effect-of-granulocyte-colony-stimulating-factor-on-the-cochlear-nuclei-after-creation-of-a-partial-nerve-lesion-an-experimental-study-in-rats
#19
Guilherme Ramina Montibeller, Benjamin Schackmann, Steffi Urbschat, Joachim M K Oertel
OBJECTIVE The risk of injury of the cochlear nerve during angle (CPA) surgery is high. Granulocyte colony-stimulating factor (G-CSF) has been found in various experimental models of peripheral and CNS injury to have a neuroprotective effect by inhibiting apoptosis and inflammation. However, to the authors' knowledge, the influence of G-CSF on cochlear nerve regeneration has not been reported. This study investigated the neuroprotective effect of G-CSF after a partial cochlear nerve lesion in rats. METHODS A lesion of the right cochlear nerve in adult male Sprague-Dawley rats was created using a water-jet dissector with a pressure of 8 bar...
February 17, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28296548/the-mechanism-of-silver-staining-of-proteins-separated-by-sds-polyacrylamide-gel-electrophoresis
#20
E Hempelmann, K Krafts
Gel based silver staining of proteins is thought to occur by selective reduction of silver ions to insoluble metallic silver at specific initiation sites in the vicinity of the protein molecules. Silver stained protein bands generally are dark brown or black with considerable variation in color intensity. The color variation has been attributed to diffractive scattering by silver grains of different sizes. Our experiments, however, demonstrate that color variation is due to the formation of silver chromate deposits that are incorporated into formalin fixed proteins...
2017: Biotechnic & Histochemistry: Official Publication of the Biological Stain Commission
keyword
keyword
109289
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"