Abstract:
:This study was designed to assess in vitro metacyclogenesis of Leishmania (Viannia) braziliensis and Leishmania (Leishmania) amazonensis clinical field isolates obtained from patient lesions (L. braziliensis IMG3 and PPS6m; L. amazonensis MAB6). Metacyclogenesis was evaluated by different criteria, namely, promastigote size (morphometric analysis and flow cytometry), surface modifications (loss of lectin or monoclonal antibody (mAb) binding, complement resistance), and infectivity to human macrophages. Growth curves were similar for all parasites evaluated. The various features analyzed were expressed in a high percentage of promastigotes at 6th and 10th days of culture and a low percentage at the 2nd day. However, in most isolates, these features, considered as markers of metacyclogenesis, seemed to develop with different time courses, since the percentages of metacyclic forms detected with each technique were usually different. Parasites from 6th or 10th day and those negatively selected with lectin or mAb similarly infected human macrophages. From all isolates analyzed, L. amazonensis PH8 and MAB6 showed the highest and the lowest levels of susceptibility, respectively, to leishmanicidal activity of IFN-γ/LPS-activated macrophages. Our results showed that by using different techniques to evaluate different aspects of metacyclogenesis (morphological and biochemical modifications) different percentages of metacyclic promastigotes can be detected in each isolate culture.
journal_name
Biomed Res Intjournal_title
BioMed research internationalauthors
da Silva IA Jr,Morato CI,Quixabeira VB,Pereira LI,Dorta ML,de Oliveira MA,Horta MF,Ribeiro-Dias Fdoi
10.1155/2015/393049subject
Has Abstractpub_date
2015-01-01 00:00:00pages
393049eissn
2314-6133issn
2314-6141journal_volume
2015pub_type
杂志文章abstract::Blocking glioma cell invasion has been challenging due to cancer cells that can swiftly switch their migration mode, and agents that can block more than one migration mode are sought after. We found that small molecule 2-(1H-indole-3-carbonyl)-thiazole-4-carboxylic acid methyl ester (ITE), an endogenous aryl hydrocarb...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2020/2616930
更新日期:2020-10-03 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2020/2536272
更新日期:2020-05-02 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2015/685303
更新日期:2015-01-01 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2014/672926
更新日期:2014-01-01 00:00:00
abstract::Matrix metalloproteinases (MMPs) are involved in the remodeling of extracellular matrix in various tissues. Their functioning could be related to the formation of complexes, containing MMP9, MMP2, tissue inhibitor of metalloproteinases type 1 (TIMP1), and neutrophil gelatinase-associated lipocalin (NGAL). Such complex...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2013/283856
更新日期:2013-01-01 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2019/6921312
更新日期:2019-02-05 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2019/5857285
更新日期:2019-06-27 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2018/9329123
更新日期:2018-08-23 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2019/4759060
更新日期:2019-07-18 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2015/406389
更新日期:2015-01-01 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2016/6568531
更新日期:2016-01-01 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章,评审
doi:10.1155/2016/3127543
更新日期:2016-01-01 00:00:00
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journal_title:BioMed research international
pub_type: 临床试验,杂志文章
doi:10.1155/2016/7075464
更新日期:2016-01-01 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2017/8756396
更新日期:2017-01-01 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2014/157295
更新日期:2014-01-01 00:00:00
abstract::Mexico has one of the highest incidences of childhood leukemia worldwide and significantly higher mortality rates for this disease compared with other countries. One possible cause is the high prevalence of gene rearrangements associated with the etiology or with a poor prognosis of childhood acute lymphoblastic leuke...
journal_title:BioMed research international
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1155/2014/210560
更新日期:2014-01-01 00:00:00
abstract::Biolasol is a newly developed solution for storing the liver, pancreas, kidneys, and heart by simple hypothermia. It exhibits high efficacy in maintaining structural and functional integrity of the graft prior to its transplantation. The solution was modified by the addition of ascorbic acid (0.088g/l) and ascorbic ac...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2018/7465435
更新日期:2018-11-12 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章,随机对照试验
doi:10.1155/2017/6560234
更新日期:2017-01-01 00:00:00
abstract:INTRODUCTION:Severe sepsis and septic shock are the primary causes of multiple organ dysfunction syndrome (MODS), which is the most frequent cause of death in intensive care unit patients. Many pro- and anti-inflammatory mediators, such as interleukin-6 (IL-6), play a strategic role in septic syndrome. Continuous renal...
journal_title:BioMed research international
pub_type: 临床试验,杂志文章
doi:10.1155/2013/108951
更新日期:2013-01-01 00:00:00
abstract:BACKGROUND:India has one of the highest tuberculosis (TB) burdens globally. However, few studies have focused on TB in young children, a vulnerable population, where lack of early diagnosis results in poor outcomes. METHODS:Young children (≤ 5 years) with suspected TB were prospectively enrolled at a tertiary hospital...
journal_title:BioMed research international
pub_type: 临床试验,杂志文章
doi:10.1155/2013/783698
更新日期:2013-01-01 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2018/2174824
更新日期:2018-11-05 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章,评审
doi:10.1155/2014/761264
更新日期:2014-01-01 00:00:00
abstract::Tanshinone IIA (Tan IIA), an active phytochemical in the dried root of Salvia miltiorrhiza Bunge, has shown an antiproliferative activity on various human cancer cell lines including nasopharyngeal carcinoma cells. However, the effects of Tan IIA on human oral cancer cells are still unknown. This study aimed to invest...
journal_title:BioMed research international
pub_type: 杂志文章,收录出版
doi:10.1155/2014/540516
更新日期:2014-01-01 00:00:00
abstract::Duchenne muscular dystrophy (DMD), the most common form of muscular dystrophy, is characterized by muscular wasting caused by dystrophin deficiency that ultimately ends in force reduction and premature death. In addition to primary genetic defect, several mechanisms contribute to DMD pathogenesis. Recently, antioxidan...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2015/680615
更新日期:2015-01-01 00:00:00
abstract::Healthcare professionals undergo high levels of occupational stress as a result of their working conditions. Thus, the aim of this study is to develop a model that focuses on healthcare professionals so as to analyze the influence that job demands, control, social support, and recognition have on the likelihood that a...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2017/4673047
更新日期:2017-01-01 00:00:00
abstract:BACKGROUND:Perimesencephalic nonaneurysmal subarachnoid hemorrhage (PM-NASAH) is characterized by a benign course compared with aneurysmal SAH. While vasospasm (VS) after aneurysmal SAH is considered responsible for serious complications, VS post-PM-NASAH is not well documented. Our purpose was to characterize the inci...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2013/371063
更新日期:2013-01-01 00:00:00
abstract::Red blood cell distribution width (RDW) is a parameter reported in complete blood cell count tests, and has been reported as an inflammatory biomarker. Multiple myeloma (MM) is known to be associated with inflammatory microenvironments. However, the importance of RDW has been seldom studied in MM. For this study, 146 ...
journal_title:BioMed research international
pub_type: 临床试验,杂志文章
doi:10.1155/2014/145619
更新日期:2014-01-01 00:00:00
abstract::RRM2B gene encodes ribonucleoside-diphosphate reductase subunit M2 B, the p53-inducible small subunit (p53R2) of ribonucleotide reductase (RNR), an enzyme catalyzing dNTP synthesis for mitochondrial DNA. Defects in this gene may cause severe mitochondrial disease affecting mainly the nervous system. This study is aime...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2020/7614634
更新日期:2020-07-25 00:00:00
abstract::The availability of fluorescent dyes and the advances in the optical systems for in vivo imaging have stimulated an increasing interest in developing new methodologies to study and quantify the biodistribution of labeled agents. However, despite these great achievements, we are facing significant challenges in determi...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2014/196837
更新日期:2014-01-01 00:00:00
abstract:PURPOSE:To assess glutamine/glutamate (Glx) and lactate (Lac) metabolism using proton magnetic resonance spectroscopic imaging (1H-MRS) in order to differentiate between adrenal gland nodules and masses (adenomas, pheochromocytomas, carcinomas, and metastases). MATERIALS AND METHODS:Institutional review board approval...
journal_title:BioMed research international
pub_type: 临床试验,杂志文章
doi:10.1155/2013/835385
更新日期:2013-01-01 00:00:00