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https://www.readbyqxmd.com/read/29189131/past-and-future-of-ga-citrate-for-infection-and-inflammation-imaging
#1
Mariza Vorster, J Buscombe, Ziauddin Saad, Mike Sathekge
Both 67Ga and 68Ga-citrates are used to detect a wide spectrum of pathology consisting of various inflammatory, infectious and malignant conditions. Considering the now widespread availability and constantly increasing demand for PET/CT studies,68Ga-citrate is gaining ground in clinical settings and the added value of combined metabolic and anatomical imaging achieved by combining PET with computed tomography (CT) to PET/CT makes 68Ga-citrate particularly promising. Despite the tracer's non-specificity, it has demonstrated potential especially in the evaluation of various infectious and inflammatory skeletal- and lung conditions...
November 29, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/29151156/deep-rnaseq-indicates-protective-mechanisms-of-cold-tolerant-indica-rice-plants-during-early-vegetative-stage
#2
Raul Antonio Sperotto, Artur Teixeira de Araújo Junior, Janete Mariza Adamski, Denise Cargnelutti, Felipe Klein Ricachenevsky, Ben-Hur Neves de Oliveira, Renata Pereira da Cruz, Rinaldo Pires Dos Santos, Leila Picolli da Silva, Janette Palma Fett
Cold-tolerance in rice may be related to increased cellulose deposition in the cell wall, membrane fatty acids unsaturation and differential expression of several newly identified genes. Low temperature exposure during early vegetative stages limits rice plant's growth and development. Most genes previously related to cold tolerance in rice are from the japonica subspecies. To help clarify the mechanisms that regulate cold tolerance in young indica rice plants, comparative transcriptome analysis of 6 h cold-treated (10 °C) leaves from two genotypes, cold-tolerant (CT) and cold-sensitive (CS), was performed...
November 18, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/29150404/stress-hormones-concentrations-in-the-normal-microenvironment-predict-risk-for-chemically-induced-cancer-in-rats
#3
Vitor Bonetti Valente, Flávia Alves Verza, Felipe Yudi Kabeya Lopes, Joana Zafalon Ferreira, Paulo Sérgio Patto Dos Santos, Maria Lúcia Marçal Mazza Sundefeld, Éder Ricardo Biasoli, Glauco Issamu Miyahara, Ana Maria Pires Soubhia, Mariza de Andrade, Sandra Helena Penha de Oliveira, Daniel Galera Bernabé
Evidence show that stress hormones can influence cancer progression, but its role in carcinogenesis is poorly understood. In this study, we used a new method based on oral carcinogenesis model in rats to test the hypothesis that physiological levels of stress hormones in the normal tissue microenvironment would have significant predictive value for chemically induced cancer occurrence. Male Wistar rats were submitted to a tongue biopsy for measuring not-stress induced levels of norepinephrine, corticosterone, adrenocorticotropic hormone (ACTH) and brain-derived neurotrophic factor (BDNF) in the tissue before carcinogenic induction...
November 8, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29145302/burkitt-lymphoma-and-cavernous-sinus-syndrome-with-breast-uptake-on-18f-fdg-pet-ct-a-case-report
#4
Florette Reyneke, Neo Mokgoro, Mariza Vorster, Mike Sathekge
RATIONALE: Burkitt lymphoma (BL) is a type of non-Hodgkin lymphoma that arises in the B-cells. Cavernous sinus involvement is rare, especially in adults. Here we report an unusual case of a 30-year-old HIV-positive woman with BL and cavernous sinus syndrome who also had intense bilateral breast uptake, related to menstrual cycle. Fluorine-18 2-fluoro-2-deoxyglucose (18F-FDG) positron emission tomography/computed tomography (PET/CT) has been found to be useful in the management of BL. PATIENT CONCERNS: A 30-year old female patient presented with a history of diplopia and headache...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29135460/evaluation-of-the-antimicrobial-activity-and-cytotoxic-effect-of-hydroxyapatite-containing-brazilian-propolis
#5
Antonio Márcio Scatolini, Silvana Marina Piccoli Pugine, Luci Cristina de Oliveira Vercik, Mariza Pires de Melo, Eliana Cristina da Silva Rigo
The aim of this work was to produce hydroxyapatite powder (HA) containing dry extract of green and red propolis, and to evaluate possible bactericidal activity of the materials in a short period of time through a fast release system. The ethanolic extracts of green and red propolis (EEP) were incorporated into the material by spray drying. After release tests, powders containing dry EEP were characterized regarding the content of total phenolics and flavonoids. Materials characterization was made by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR)...
November 14, 2017: Biomedical Materials
https://www.readbyqxmd.com/read/29101444/-68-ga-psma-11-pet-ct-in-primary-staging-of-prostate-carcinoma-preliminary-results-on-differences-between-black-and-white-south-africans
#6
Mike Sathekge, Thabo Lengana, Alex Maes, Mariza Vorster, JanRijn Zeevaart, Ismaheel Lawal, Thomas Ebenhan, Christophe Van de Wiele
PURPOSE: The incidence of prostate cancer is 60% higher and the mortality rate is two- to three-times greater in black versus white men. We report on differences in (68)Ga-PSMA-11 PET/CT imaging findings in 77 black South-African (BSAs) and 18 white South-African (WSAs) treatment-naïve primary prostate carcinoma (PPC) patients. METHODS: (68)Ga-PSMA-11 PET/CT imaging findings were compared to histological, biochemical and morphological imaging data. Patients were grouped into three Gleason grade groups (GG), GG 1 (scores 3 + 3 and 3 + 4), GG2 (scores 4 + 3 and 4 + 4) and GG3 (scores 9 and 10), and the PSA difference among the groups was determined...
November 4, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29055060/gonadotropin-releasing-hormone-agonists-for-ovarian-protection-during-cancer-chemotherapy-systematic-review-and-meta-analysis
#7
REVIEW
Janaina C Senra, Matheus Roque, Mariza C T Talim, Fernando M Reis, Rubens L C Tavares
OBJECTIVE: To evaluate the effectiveness of GnRH agonist (GnRHa) administration before and/or during cancer chemotherapy for the protection of ovarian reserve in premenopausal women. METHODS: We conducted a systematic review and meta-analysis of randomized controlled trials (RCT) comparing the use of GnRHa, before and/or during chemotherapy, vs. chemotherapy alone. Eligible participants were premenopausal women at any stage of cancer, without previous diagnosis of infertility...
October 21, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/29040580/cohort-profile-the-mother-child-cohort-in-crete-greece-rhea-study
#8
Leda Chatzi, Vasiliki Leventakou, Marina Vafeiadi, Katerina Koutra, Theano Roumeliotaki, Georgia Chalkiadaki, Marianna Karachaliou, Vasiliki Daraki, Andriani Kyriklaki, Mariza Kampouri, Eleni Fthenou, Katerina Sarri, Maria Vassilaki, Maria Fasoulaki, Panos Bitsios, Antonis Koutis, Euripides G Stephanou, Manolis Kogevinas
No abstract text is available yet for this article.
October 1, 2017: International Journal of Epidemiology
https://www.readbyqxmd.com/read/29039968/characteristics-biological-properties-and-analytical-methods-of-ursolic-acid-a-review
#9
Andressa Maria Pironi, Patricia Rocha de Araújo, Mariza Aires Fernandes, Hérida Regina Nunes Salgado, Marlus Chorilli
Ursolic acid (UA) is a naturally occurring triterpenoid which is a promising candidate for the development of new therapeutic approaches and for the prevention and treatment of several diseases owing to its pharmacological importance. However, its low solubility in aqueous medium affects its therapeutic application. Several strategies have been used to overcome this obstacle. In this study, the incorporation of UA in to different drug delivery systems was found to be highly efficient. In addition, important investigations were performed about methods for qualitative and quantitative analyses of UA in various raw materials, including plants, biological fluids, and drug delivery systems, were investigated...
October 17, 2017: Critical Reviews in Analytical Chemistry
https://www.readbyqxmd.com/read/29036934/identification-of-genetic-interaction-with-risk-factors-using-a-time-to-event-model
#10
Mariza de Andrade, Sebastian M Armasu, Bryan M McCauley, Tanya M Petterson, John A Heit
BACKGROUND: Certain diseases can occur with and without a trigger. We use Venous Thromboembolism (VTE) as our example to identify genetic interaction with pregnancy in women with VTE during pre- or postpartum. Pregnancy is one of the major risk factors for VTE as it accounts for 10% of maternal deaths. METHODS: We performed a whole genome association analysis using the Cox Proportional Hazard (CoxPH) model adjusted for covariates to identify genetic variants associated with the time-to-event of VTE related to pre- or postpartum during the childbearing age of 18-45 years using a case-only design in a cohort of women with VTE...
October 15, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28977089/pregnancy-recurrence-in-adolescents-in-southern-brazil
#11
Mariza Zanchi, Raúl Andrés Mendoza-Sassi, Marilyn Rita da Silva, Sheylla Gorges de Almeida, Lisiane Ortiz Teixeira, Carla Vitola Gonçalves
OBJECTIVE: To determine the pregnancy recurrence among adolescents and young people in a city located in the extreme south of Brazil and to identify associated factors. METHOD: One hundred and twelve (112) women participated, having delivered their children in 2010, while adolescents. The sample was stratified in two stages, being the first a census of the whole population of the city and the second a convenience sample. For statistical analysis, Pearson Chi-square test was used, with a significance level of 5%...
July 2017: Revista da Associação Médica Brasileira
https://www.readbyqxmd.com/read/28967586/correlation-between-voice-and-auditory-processing
#12
Janine Santos Ramos, Mariza Ribeiro Feniman, Ingrid Gielow, Kelly Cristina Alves Silverio
PURPOSE: To compare and to correlate the performance of women with behavioral dysphonia and without voice disorders in auditory processing tests and in the Voice Tone Reproduction Test (VTRT). METHODS: Forty women aged from 18 to 44 years participated and were divided in two groups: dysphonic (DG) and non-dysphonic (NDG). The participants underwent interview, hearing, otorhinolaryngology and voice assessments (voice record, VTRT through phonetography), and auditory processing assessment-using the Pitch Pattern Sequence (PPS) test and the Duration Pattern Sequence (DPS) test...
September 26, 2017: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/28953253/an-efficient-test-for-gene-environment-interaction-in-generalized-linear-mixed-models-with-family-data
#13
Mauricio A Mazo Lopera, Brandon J Coombes, Mariza de Andrade
Gene-environment (GE) interaction has important implications in the etiology of complex diseases that are caused by a combination of genetic factors and environment variables. Several authors have developed GE analysis in the context of independent subjects or longitudinal data using a gene-set. In this paper, we propose to analyze GE interaction for discrete and continuous phenotypes in family studies by incorporating the relatedness among the relatives for each family into a generalized linear mixed model (GLMM) and by using a gene-based variance component test...
September 27, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28940498/twice-weekly-pulse-and-daily-continuous-dose-erlotinib-as-initial-treatment-for-patients-with-epidermal-growth-factor-receptor-mutant-lung-cancers-and-brain-metastases
#14
Kathryn C Arbour, Mark G Kris, Gregory J Riely, Ai Ni, Kathryn Beal, Mariza Daras, Sara A Hayes, Robert J Young, Christopher R Rodriguez, Linda Ahn, William Pao, Helena A Yu
BACKGROUND: In a phase 1 study of pulse/continuous-dose erlotinib, no patient had disease progression in the central nervous system (CNS). This expansion cohort of the phase 1 study tested the same regimen in a cohort of individuals with epidermal growth factor receptor (EGFR)-mutant lung cancers with untreated brain metastases. METHODS: Patients had not received EGFR tyrosine kinase inhibitors or radiation for brain metastases. All received 1200 mg of erlotinib on days 1 and 2 and 50 mg on days 3 to 7 weekly...
September 21, 2017: Cancer
https://www.readbyqxmd.com/read/28927293/antileishmanial-and-antioxidant-potential-of-fractions-and-isolated-compounds-from-nectandra-cuspidata
#15
Lilian Dos Anjos Oliveira Ferreira, Mariana Maciel de Oliveira, Flávia Lais Faleiro, Débora Botura Scariot, Joana Schuelter Boeing, Jesuí Vergílio Visentainer, Mariza Barion Romagnolo, Celso Vataru Nakamura, Maria da Conceição Torrado Truiti
The effects on the viability of promastigote and amastigote forms of Leishmania (Leishmania) amazonensis and citotoxicity in J774.A1 macrophages of ethanolic extract, fractions and isolated compounds that were obtained from the leaves of Nectandra cuspidata were determined. The total phenolics content (TP) and antioxidant activity were assessed using different assays. The ethyl acetate fraction (EAF) had the best antiproliferative activity (amastigote IC50: 4.42 ± 0.60 μg/mL, promastigote IC50: 33.33 ± 0...
September 19, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28914079/co-infection-of-human-herpesvirus-type-2-hhv-2-and-human-immunodeficiency-virus-hiv-among-pregnant-women-in-rio-de-janeiro-brazil
#16
Lyana Rodrigues Pinto Lima, Luis Eduardo Barros Costa Fernandes, Daniel A M Villela, Mariza Gonçalves Morgado, José Henrique Pilotto, Vanessa Salete de Paula
Pregnant women who are infected with the Human Immunodeficiency Virus (HIV) are particularly vulnerable to severe and recurrent infections with Human Herpesvirus 2 (HHV-2). Neonatal transmission of HHV-2 has been associated with malformations and neurological sequelae in infants, which makes it very important to perform antenatal monitoring for genital herpes. In the study, 134 pregnant women infected with HIV were tested for HHV-2 IgM and IgG using an enzyme-linked immunosorbent assay (ELISA) and had HHV-2 DNA analyzed by Real Time Polymerase Chain Reaction (qPCR)...
September 15, 2017: AIDS Care
https://www.readbyqxmd.com/read/28902298/nursing-infant-with-acquired-toxoplasmosis-in-the-first-months-of-life-a-case-report
#17
Hanstter Hallison Alves Rezende, Heloísa Ribeiro Storchilo, Jaqueline Ataíde Silva Lima, Antônio Roberto Gomes, Taynara Cristina Gomes, Jéssica Yonara de Souza, Mariza Martins Avelino, Waldemar Naves do Amaral, Marina Clare Vinaud, Ana Maria de Castro
Toxoplasmosis is caused by Toxoplasma gondii and the probability of this infection occurring in the first months of life is usually low because its transmission is related to eating habits. A 6-month-old nursing infant was diagnosed with acute toxoplasmosis, which was identified through anti- T. gondii IgA, IgM and low-avidity IgG serologic assays, polymerase chain reaction (PCR) and mouse bioassay test although its mother was seronegative. This serological divergence between mother and child led us to interview the mother regarding epidemiological factors...
August 24, 2017: Revista do Instituto de Medicina Tropical de São Paulo
https://www.readbyqxmd.com/read/28878856/-68-gallium-arginine-glycine-aspartic-acid-and-18-f-fluorodeoxyglucose-positron-emission-tomography-computed-tomography-in-chondroblastic-osteosarcoma-of-the-skull
#18
Akintunde Orunmuyi, Moshe Modiselle, Thabo Lengana, Thomas Ebenhan, Mariza Vorster, Mike Sathekge
We report the case of a 32 year-old male with Chondroblastic Osteosarcoma of the skull, which was imaged with both (18)[F]fluorodeoxyglucose ((18)F-FDG) positron emission tomography/computed tomography (PET/CT) and (68)Gallium-arginine-glycine-aspartic acid ((68)Ga-RGD) PET/CT. The (18)F-FDG PET/CT did not demonstrate the tumour, whereas the (68)Ga-RGD PET/CT clearly depicted a left-sided frontal tumour. (68)Ga-RGD PET/CT may be a clinically useful imaging modality for early detection of recurrent osteosarcoma, considering the limitations of (18)F-FDG PET in a setting of low glycolytic activity...
September 2017: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28878686/comparative-analysis-of-3d-bladder-tumor-spheroids-obtained-by-forced-floating-and-hanging-drop-methods-for-drug-screening
#19
Robson L F Amaral, Mariza Miranda, Priscyla D Marcato, Kamilla Swiech
Introduction: Cell-based assays using three-dimensional (3D) cell cultures may reflect the antitumor activity of compounds more accurately, since these models reproduce the tumor microenvironment better. Methods: Here, we report a comparative analysis of cell behavior in the two most widely employed methods for 3D spheroid culture, forced floating (Ultra-low Attachment, ULA, plates), and hanging drop (HD) methods, using the RT4 human bladder cancer cell line as a model. The morphology parameters and growth/metabolism of the spheroids generated were first characterized, using four different cell-seeding concentrations (0...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28874142/risk-factors-for-increased-immune-reconstitution-in-response-to-mycobacterium-tuberculosis-antigens-in-tuberculosis-hiv-infected-antiretroviral-na%C3%A3-ve-patients
#20
Tatiana Pereira da Silva, Carmem Beatriz Wagner Giacoia-Gripp, Carolina A Schmaltz, Flavia Marinho Sant'Anna, Maria Helena Saad, Juliana Arruda de Matos, Julio Castro Alves de Lima E Silva, Valeria Cavalcanti Rolla, Mariza Gonçalves Morgado
BACKGROUND: Little is known regarding the restoration of the specific immune response after combined antiretroviral therapy (cART) and anti-tuberculosis (TB) therapy introduction among TB-HIV patients. In this study, we examined the immune response of TB-HIV patients to Mycobacterium tuberculosis (Mtb) antigens to evaluate the response dynamics to different antigens over time. Moreover, we also evaluated the influence of two different doses of efavirenz and the factors associated with immune reconstitution...
September 6, 2017: BMC Infectious Diseases
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