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Anti-Müllerian hormone in female dromedary camel and its association with super-ovulatory response in embryo donors. Domest Anim Endocrinol 2024; 86:106818. [PMID: 37778186 DOI: 10.1016/j.domaniend.2023.106818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 08/23/2023] [Accepted: 08/24/2023] [Indexed: 10/03/2023]
Abstract
Anti-Müllerian hormone (AMH) has a conserved role in regulating the reproductive cycle in several species. Its circulating concentration reflects the size of the growing primordial follicle reserve and is a reliable predictor of superovulation response in embryo/oocyte donors. This study investigated the possible application of AMH measurement in dromedary camels (Camelus dromedarius) multiple ovulation embryo transfer programs. In experiment 1, the follicular cycle of synchronized and naturally cycling camels (n = 12) was monitored. Blood was collected at 6 timepoints in 2 consecutive cycles corresponding to emergence, mid-cycle, and dominance in both group and hormonal fluctuations were evaluated for repeatability of measurements within and between cycles. In experiment 2, the correlation between circulating AMH concentrations prior to initiation of superovulation and the outcome of superovulation was evaluated. The results were compared between donors with higher (n = 7) and lower than median (n = 8) AMH values. Mean AMH concentrations in synchronized and non-synchronized camels were 1.46 ± 0.15 and 0.95 ± 0.09, respectively. Intercycle and intracycle values of AMH showed high repeatability in camels of both groups (>96.4% and >92.74%, respectively) with significant correlations between values at different stages of the ovarian cycle (Emergence and mid-cycle: R2 = 0.82; emergence and. dominance: R2 = 0.86; Mid-cycle and dominance: R2 = 0.93, P < 0.05). Total follicles, CLs, and recovered embryos were highly correlated with AMH values prior to superovulation (R2 = 0.64, R2 = 0.77, and R2 = 0.64, respectively, P < 0.05). A greater number of developed follicles prior to mating (17.00 ± 2.09 vs. 7.62 ± 1.06), CLs (12.58 ± 1.36 vs. 5.12 ± 0.93), transferable (10.85 ± 1,31 vs. 3.37 ± 0.82), and spherical embryos (8.14 ± 1.07 vs. 2.62 ± 0.7) were observed in camels with higher than median concentrations of AMH (P < 0.05). Fluctuations in estradiol and progesterone did not affect variations in mean AMH values (r2 < 0.19 and r2 < 0.24, respectively, P > 0.05). In conclusion, highly consistent AMH values in dromedary camels are a reliable predictor of superovulation response and outcome in dromedary camels.
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Role of pH and Crosslinking Ions on Cell Viability and Metabolic Activity in Alginate-Gelatin 3D Prints. Gels 2023; 9:853. [PMID: 37998943 PMCID: PMC10670374 DOI: 10.3390/gels9110853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 10/13/2023] [Accepted: 10/18/2023] [Indexed: 11/25/2023] Open
Abstract
Alginate-gelatin hydrogels are extensively used in bioengineering. However, despite different formulations being used to grow different cell types in vitro, their pH and its effect, together with the crosslinking ions of these formulations, are still infrequently assessed. In this work, we study how these elements can affect hydrogel stability and printability and influence cell viability and metabolism on the resulting 3D prints. Our results show that both the buffer pH and crosslinking ion (Ca2+ or Ba2+) influence the swelling and degradation rates of prints. Moreover, buffer pH influenced the printability of hydrogel in the air but did not when printed directly in a fluid-phase CaCl2 or BaCl2 crosslinking bath. In addition, both U2OS and NIH/3T3 cells showed greater cell metabolic activity on one-layer prints crosslinked with Ca2+. In addition, Ba2+ increased the cell death of NIH/3T3 cells while having no effect on U2OS cell viability. The pH of the buffer also had an important impact on the cell behavior. U2OS cells showed a 2.25-fold cell metabolism increase on one-layer prints prepared at pH 8.0 in comparison to those prepared at pH 5.5, whereas NIH/3T3 cells showed greater metabolism on one-layer prints with pH 7.0. Finally, we observed a difference in the cell arrangement of U2OS cells growing on prints prepared from hydrogels with an acidic buffer in comparison to cells growing on those prepared using a neutral or basic buffer. These results show that both pH and the crosslinking ion influence hydrogel strength and cell behavior.
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Inventory construction to track cognitive profiles compatible with intellectual disability, ADHD, and dyslexia in children between 6 to 11 years old. Eur Psychiatry 2021. [PMCID: PMC9479937 DOI: 10.1192/j.eurpsy.2021.2001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Introduction The most frequent complaints from children referred to psychiatry and psychologist are related to academic and attentional impairments, or developmental delay, which are shared by many conditions. Objectives To develop an inventory that evaluates cognitive functions of children between 6 to 11 years old to track cognitive profiles compatible with Intellectual Disability, ADHD, and dyslexia to assist in differential diagnosis. Methods In study 1 (identification of the relevant constructs, operational definition, and items development), data were collected from parents of children and professionals who serve this population; articles, verification of screening instruments and identification of cognitive impairments by the DSM-5. In study 2, an analysis of judges with professionals was carried out, as well as a verification of the items’ clarity by the target population; In study 3, we looked for evidence of validity and precision indicators with a sample of 272 parents and 178 teachers of 72 children diagnosed with one of the three disorders and 207 that had no suspect of neurodevelopmental disorders. Results For the parent version, the four-factor solution was the most appropriate, with the following Scales: Attention, Executive Functions, Intelligence and Oral Language. The final version for parents was composed of 60 items, with excellent internal consistency indices (coefficients> 0.90). Conclusions ROC curves expressed good sensitivity and specificity of the scales for each disorder. Future studies have to expand the sample size of children diagnosed with one of the three disorders so that new analyzes can be performed and the results can be generalizable to the population. Disclosure No significant relationships.
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Upper Abdomen and Thoracic Endometriosis Infiltrating the R. Diaphragm, Liver, Lung, Pericardium and Perirenal Area. Laparospic Approach. J Minim Invasive Gynecol 2020. [DOI: 10.1016/j.jmig.2020.08.372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Advancing in the institutionalization of Evidence-Informed Policy in Brazil. Eur J Public Health 2020. [DOI: 10.1093/eurpub/ckaa166.1216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
EVIPNet Brazil was launched in 2007, coordinated by the Ministry of Health. Its expansion has promoted the institutionalization of a national knowledge translation platform, and has also been active at the local level. Local Health Evidence Labs were implemented to institucionalize working groups linked to EVIPNet. In this multiple case study, we discuss the advances in the institutionalization of Evidence-Informed Policy-making in Brazil, based on a mapping of the Health Evidence Labs' institutional capacity to acquire, evaluate, adapt and apply evidence and analyzed organizational arrangements and implementation barriers. The coordinators of 15 responded to a self-assessment questionnaire from the Canadian Health Services Research Foundation. The main products reported are evidence briefs and deliberative dialogues focused on regional problems, training activities and different kinds of rapid responses. Health Evidence Labs have the resources to acquire and evaluate research evidence, but have a low capacity to adapt and apply evidence, indicating that they do not have all the factors (skills, structures, processes, and organizational culture) to promote and use research results in decision-making. The lower capacity to 'adapt' and 'apply' evidence may be related to low development of exchange process with external experts. Governance is joined between managers of the departments with technical bodies; the service provision occurs to attend internal and external demands; financing is public or utilizing public research calls. The implementation barriers described are the staff turnover, inadequate funding arragements for develop knowledge translation products, paid access to evidence databases, lack of a repository for their production, and lack of monitoring and evaluation. Brazil has improved in the institutionalization of evidence-informed policy but still some important barriers to achieve a complete national knowledge translation platform.
Key messages
Brazil has institutionalized evidence-informed policy from the structuring of EVIPNet Brazil Network. To achieve the network sustainability, it is vital to consider the alignment of organizational elements with an emphasis on governance, financing, and its monitoring.
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218 Urine samples as a noninvasive source of induced pluripotent cells in the swine model. Reprod Fertil Dev 2020. [DOI: 10.1071/rdv32n2ab218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Noninvasive collection of cells used for generation of induced pluripotent stem cells (iPSC) generation would simplify its use for regenerative and reproductive purposes in veterinary medicine, although it is still unpublished in species other than humans. This study aimed to derive urine progenitor cells (UPCs) invitro from urine samples collected from swine, and then to reprogram them into iPSCs. For that, urine samples were collected from three females, and cells were isolated and cultured from each following the human UPCs protocol (Steichen et al. 2017 Curr. Protoc. Hum. Genet. 21, 7.1-21.7.22; https://doi.org/10.1002/cphg.26). Approximately 200mL of urine samples were collected in sterile flasks and centrifuged at 300×g; the pellet was washed in Dulbecco's PBS, resuspended, and cultured in 45% Dulbecco's modified Eagle's medium (DMEM)-high glucose, 5% fetal bovine serum (FBS), 50% Renal Epithelial Cell Growth basal medium (REBM) supplemented with 1% glutamine, 1% nonessential amino acids (NEAA), penicillin/streptomycin (P/S), and REGM supplements hEGF, insulin, hydrocortisone, GA-1000, FBS, transferrin, triiodothyronine, epinephrine (Lonza), and 10ngmL−1 basic fibroblast growth factor (bFGF). The UPCs first colonies were observed approximately 1 week after and resembled epithelial-like cells. At passage 2, one cell line was transduced with murine OCT4, SOX2, KLF4, and C-MYC cDNAs (OSKM) using a lentiviral vector. After 5 days, cells were plated onto mouse embryonic fibroblasts and cultured in knockout DMEM/F12, 20% knockout serum replacement, NEAA, L-glutamine, 2-mercaptoethanol, and P/S supplemented with 10ngmL−1 bFGF. Efficiency of reprogramming was 8.45%, measured by analysing the number of typical iPSC colonies relative to the transduced cells plated, after ~12 days. Three clonal lines (C1, C4, and C6) were maintained invitro and characterised regarding pluripotency markers for at least 30 passages. All three lines were positive for alkaline phosphatase activity in passages 15 and also 22. Immunocytochemistry analysis revealed that C6 (passage 22) was positive for the pluripotency genes OCT4 (1:100, SC), SOX2 (1:500, AB), SSEA1 (1:50, SC), TRA1- 81 (1:50, Millipore), and NANOG (1:100, AB), whereas C1 and C4 (passages 23 and 22, respectively) were positive only for OCT4, SOX2, and SSEA1. The expression of exogenous and endogenous pluripotency factors (OCT4, SOX2, and NANOG) was evaluated by qRT-PCR, comparing the three clonal lines at passages 16/17 and 21/22 and comparing different passages (10, 11, 14, 17, and 22) on C1 line. No statistical difference was observed between cell lines when compared in different passages, perhaps because of the great variation between lines. However, analysis of C1 line over time showed that pluripotency genes increased and exogenous vector expression decreased during early passages (±10 passages); however, after passage 17, OCT4 and NANOG decreased whereas SOX2 and exogenous vector expression increased. In conclusion, it was possible to reprogram UPCs into iPSCs and maintain them in culture for at least 30 passages; however, iPSCS were dependent on exogenous factors. These results represent the partial reprogramming of UPCs to iPSCs in animals for the first time, enabling the generation of invitro disease models using a noninvasive method.
Financial support for this study was received from FAPESP (2019/02811-2, 2015/26818-5), CNPq (433133/2018-0), and CAPES.
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PCN38 SYSTEMATIC REVIEW OF RISK SHARING AGREEMENT IN ONCOLOGY: ADVANCES OR MORE OF THE SAME? Value Health Reg Issues 2019. [DOI: 10.1016/j.vhri.2019.08.106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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45 Net macromineral requirements for maintenance in male and female Saanen goats: A meta-analytical approach. J Anim Sci 2018. [DOI: 10.1093/jas/sky404.997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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WELLBEING: A PHOTOVOICE EXPLORATION OF HEALTH AMONG OLDER ADULTS EXPERIENCING HOMELESSNESS. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.1675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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P2.01-31 Updated EGFR Mutation Frequency in 1,689 NSCLC Brazilian Patients – A National-Wide Study. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.1085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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PD.1.06 EGFR Uncommon Mutations Frequency in a 1,688 NSCLC Patients Database in Brazil. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.07.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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An overview of anti-diabetic plants used in Gabon: Pharmacology and toxicology. JOURNAL OF ETHNOPHARMACOLOGY 2018; 216:203-228. [PMID: 29305175 DOI: 10.1016/j.jep.2017.12.036] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 12/24/2017] [Accepted: 12/25/2017] [Indexed: 06/07/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The management of diabetes mellitus management in African communities, especially in Gabon, is not well established as more than 60% of population rely on traditional treatments as primary healthcare. The aim of this review was to collect and present the scientific evidence for the use of medicinal plants that are in currect by Gabonese traditional healers to manage diabetes or hyperglycaemia based here on the pharmacological and toxicological profiles of plants with anti-diabetic activity. There are presented in order to promote their therapeutic value, ensure a safer use by population and provide some bases for further study on high potential plants reviewed. MATERIALS AND METHODS Ethnobotanical studies were sourced using databases such as Online Wiley library, Pubmed, Google Scholar, PROTA, books and unpublished data including Ph.D. and Master thesis, African and Asian journals. Keywords including 'Diabetes', 'Gabon', 'Toxicity', 'Constituents', 'hyperglycaemia' were used. RESULTS A total of 69 plants currently used in Gabon with potential anti-diabetic activity have been identified in the literature, all of which have been used in in vivo or in vitro studies. Most of the plants have been studied in human or animal models for their ability to reduce blood glucose, stimulate insulin secretion or inhibit carbohydrates enzymes. Active substances have been identified in 12 out of 69 plants outlined in this review, these include Allium cepa and Tabernanthe iboga. Only eight plants have their active substances tested for anti-diabetic activity and are suitables for further investigation. Toxicological data is scarce and is dose-related to the functional parameters of major organs such as kidney and liver. CONCLUSION An in-depth understanding on the pharmacology and toxicology of Gabonese anti-diabetic plants is lacking yet there is a great scope for new treatments. With further research, the use of Gabonese anti-diabetic plants is important to ensure the safety of the diabetic patients in Gabon.
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Transcranial direct current stimulation (tDCS) prevents chronic stress-induced hyperalgesia in rats. Brain Stimul 2018; 11:299-301. [DOI: 10.1016/j.brs.2017.11.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Revised: 11/08/2017] [Accepted: 11/14/2017] [Indexed: 12/15/2022] Open
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Abstract P5-22-19: Nipple sparing mastectomy in unselect patients: Experience of an academic center in the south of Brazil. Cancer Res 2018. [DOI: 10.1158/1538-7445.sabcs17-p5-22-19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
INTRODUCTION: Nipple sparing mastectomy (NSM) consists in the complete excision of the breast gland, mantaining the subcutaneous tissue, skin and nipple-areola complex (NAC). Recently, the NSM was developed as a therapeutic option not just for the patients that need risk-reducing surgery, but also for patients that have tumors not involving the NAC.
OBJECTIVES: Evaluate the overall survival, disease-free survival and local recurrence of the patients that underwent NSM. The only exclusion criteria for NSM was lesion at the NAC.
MATERIAL AND METHODS: Retrospective study that evaluate the number of cases of NSM performed between 2003 and 2015 in a private sector in the south of Brazil.
RESULTS: A total of 224 patients underwent NSM during the period of 2003-2015. The mean age was 47 years. From the total, 43 patients underwent risk-reducing NSM and 181 therapeutic NSM (64 unilateral and 117 bilateral). In those cases of bilateral procedures all of them underwent risk-reducing surgery on the contralateral breast (there were no bilateral cancers). Of this 181 cases, 108 (59%) have familiar history of breast cancer, considering first, second and third-degree relatives. Twenty six patients (14%) have history of previous breast cancer diagnosed. In this group of 181 patients with therapeutic NSM, 29 (16%) developed any unfavorable outcomes, 13 (7%) local recurrence, 4 (2%) ipsilateral node recurrence, 3 (1,6%) contralateral recurrence and 9 (5%) distant metastasis. None of the local recurrences occurred at the NAC, neither the cited unfavorable outcomes occurred in the risk-reducing setting. In a median follow-up of 47,7 months, the overall survival was 95% (8 deaths related to breast cancer) and the disease-free survival was 83,7%.
CONCLUSIONS: The overall survival rates of 95% at 47 months of follow-up is similar to the literature rates, that range from 93 to 97% in 5 years, depending on study's inclusion criterias. In our study, 14% of patients had previous breast cancer and 59% of patients treated for breast cancer by NSM had positive familiar history of breast cancer. This results in an unselected group of patients confirms the safety of this therapeutic method as an option for breast cancer patients.
Citation Format: Frasson A, Zerwes F, Souza A, Rossato N, Miranda I, Trindade V, Vollbrecht B, Santos M, Viegas J. Nipple sparing mastectomy in unselect patients: Experience of an academic center in the south of Brazil [abstract]. In: Proceedings of the 2017 San Antonio Breast Cancer Symposium; 2017 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2018;78(4 Suppl):Abstract nr P5-22-19.
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Influence of Covering Reused Broiler Litter with Plastic Canvas on Litter Characteristics and Bacteriology and the Subsequent Immunity and Microbiology of Broilers. BRAZILIAN JOURNAL OF POULTRY SCIENCE 2016. [DOI: 10.1590/1806-9061-2015-0061] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Cytotoxicity evaluation of Amoxicillin and Potassium Clavulanate in Perna perna musselss. ACTA ACUST UNITED AC 2016. [DOI: 10.5132/eec.2016.01.04] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Spontaneous Resolution of a Ruptured Dissecting PICA Aneurysm. Interv Neuroradiol 2016; 4:287-92. [DOI: 10.1177/159101999800400404] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/1998] [Accepted: 09/20/1998] [Indexed: 11/16/2022] Open
Abstract
Spontaneous dissecting aneurysms (SDAs) seldom involve the intradural vertebral artery VA, the posterior cerebral, basilar or postero inferior cerebellar arteries (PICAs), where they produce subarachnoid haemorrhage and/or ischaemia. These lesions may develop spontaneously or occasionally after minor trauma and occur in young people in whom there is no underlying abnormality to explain the appearance of the dissection in most cases. Spontaneous dissecting aneurysm of the PICA is rare and its natural history is not well understood. Surgery or endovascular treatment for PICA dissection remain controversial because they suggest vessel occlusion. Only in a few cases is the bypass between the occipital artery and the PICA possible with trapping of the dissected segment. Reinforcement of the arterial wall does not seem efficient and the surgical approach per se with sole exclusion of the aneurysm may be disastrous. We describe two cases of SDA of PICA that presented with subarachnoid haemorrhage (SAH), treated conservatively, with spontaneous cure of the lesions, angiographically confirmed at mid-time follow-up of five and four months. These favourable spontaneous thromboses, like 11 other similar case reported in the literature, did not show any rebleed. The possibility of a benign clinical course of this lesion exists; clinical and angiographic management of the patient before a decision for a aggressive treatment is proposed.
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THU0157 Serum Levels of Interleukin 33 and its Soluble Receptor ST2 are not Related to Subclinical Atherosclerosis in Patients with Rheumatoid Arthritis. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.2627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Oral Abstract session: Different imaging modalities for the approach of coronary artery disease: Friday 5 December 2014, 16:30-18:00 * Location: Agora. Eur Heart J Cardiovasc Imaging 2014. [DOI: 10.1093/ehjci/jeu269] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Poster session 4: Friday 5 December 2014, 08:30-12:30 * Location: Poster area. Eur Heart J Cardiovasc Imaging 2014. [DOI: 10.1093/ehjci/jeu256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Endophytic bacteria from banana cultivars and their antifungal activity. GENETICS AND MOLECULAR RESEARCH 2014; 13:8661-70. [PMID: 25366756 DOI: 10.4238/2014.october.27.6] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Endophytic microorganisms consist of fungi, bacteria, and actinomycetes that play important roles in the process of plant adaptation to the environment. Currently, the natural associations between microorganisms and plant species are being explored for a large number of biotechnological applications. In this study, 122 endophytic bacteria were isolated from 5 cultivars of Musa spp from the state of Amazonas (Brazil). Four strains were selected because they exhibited antagonistic activities against Fusarium oxysporum f. sp cubense and Colletotrichum guaranicola, with inhibitions ranging from 19 to 30% and 27 to 35%, respectively. Phylogenetic analysis of the 16S rDNA regions of these bacteria with antifungal activity showed that they are phylogenetically related to 3 different species of Bacillus - B. amyloliquefaciens, B. subtilis subsp subtilis, and B. thuringiensis.
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Genetic diversity of Mycosphaerella fijiensis in Brazil analyzed using an ERIC-PCR marker. GENETICS AND MOLECULAR RESEARCH 2014; 13:7698-707. [PMID: 25299083 DOI: 10.4238/2014.september.26.7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The Enterobacterial repetitive intergenic consensus (ERIC) marker was used to analyze the genetic variability of Mycosphaerella fijiensis, the causative agent of Black Sigatoka disease in banana plants. A total of 123 isolates were used, which were divided into populations based on their original hosts and collection sites in Brazil. A total of 9 loci were amplified, 77.8% of which were found to be polymorphic. The genetic diversity found in the population was 0.20. Analysis of molecular variance (AMOVA) demonstrated that the highest level of genetic variation is within populations. Cluster analysis revealed three main groups in Brazil, with no correlation between geographic and genetic distance.
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Variation of surface ozone in Campo Grande, Brazil: meteorological effect analysis and prediction. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2014; 21:10550-10559. [PMID: 24854500 DOI: 10.1007/s11356-014-2977-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Accepted: 04/23/2014] [Indexed: 06/03/2023]
Abstract
The effect of meteorological variables on surface ozone (O3) concentrations was analysed based on temporal variation of linear correlation and artificial neural network (ANN) models defined by genetic algorithms (GAs). ANN models were also used to predict the daily average concentration of this air pollutant in Campo Grande, Brazil. Three methodologies were applied using GAs, two of them considering threshold models. In these models, the variables selected to define different regimes were daily average O3 concentration, relative humidity and solar radiation. The threshold model that considers two O3 regimes was the one that correctly describes the effect of important meteorological variables in O3 behaviour, presenting also a good predictive performance. Solar radiation, relative humidity and rainfall were considered significant for both O3 regimes; however, wind speed (dispersion effect) was only significant for high concentrations. According to this model, high O3 concentrations corresponded to high solar radiation, low relative humidity and wind speed. This model showed to be a powerful tool to interpret the O3 behaviour, being useful to define policy strategies for human health protection regarding air pollution.
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Phytochemical screening and cytotoxicity studies of Chrysophyllum pruniforme Pierre ex Engl. barks. Pharmacognosy Res 2013; 5:195-9. [PMID: 23900977 PMCID: PMC3719262 DOI: 10.4103/0974-8490.112427] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2012] [Revised: 11/06/2012] [Accepted: 05/22/2013] [Indexed: 12/31/2022] Open
Abstract
Background: Chrysophyllum pruniforme of family sapotaceae is a plant used in traditional medicine in Gabon. Materials and Methods: In this study, C. pruniforme barks were subjected to phytochemical screening and cytotoxicity investigations. Different concentrations of aqueous and total phenolic extract were tested on mice and on human erythrocytes. Results: Phytochemical screening of C. pruniforme barks revealed the presence of flavonoids, saponins, and tannins, reducing sugars, polyphenols and traces of anthraquinones. When tested in vitro, aqueous and the phenolic extracts showed hemolytic activities on human erythrocytes with phenolic compounds being more cytotoxic than aqueous extracts. In vivo study of toxicity, allowed to determine the LD50 at 90 mg/kg for the doses of 50, 150 and 250 mg/kg of body weight. Conclusion: These data indicate in one hand that C. pruniforme is rich in phenolic compounds and that the aqueous and total phenolic extracts could be considered as toxic for mice and maybe potentially toxic to humans in the other hand.
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Cervical cancer post-treatment follow-up: Critical analysis. Gynecol Oncol 2013. [DOI: 10.1016/j.ygyno.2013.04.169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Canine Fibroblasts Expressing Human Transcription Factors: What is in the Route for the Production of Canine Induced Pluripotent Stem Cells. Reprod Domest Anim 2012; 47 Suppl 6:84-7. [DOI: 10.1111/rda.12002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Cafeteria diet-induced obesity plus chronic stress alter serum leptin levels. Peptides 2012; 38:189-96. [PMID: 22940203 DOI: 10.1016/j.peptides.2012.08.007] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2012] [Revised: 08/10/2012] [Accepted: 08/10/2012] [Indexed: 12/19/2022]
Abstract
Obesity is a disease that has become a serious public health issue worldwide, and chronic stressors, which are a problem for modern society, cause neuroendocrine changes with alterations in food intake. Obesity and chronic stress are associated with the development of cardiovascular diseases and metabolic disorders. In this study, a rat model was used to evaluate the effects of a hypercaloric diet plus chronic restraint stress on the serum leptin and lipids levels and on the weight of specific adipose tissue (mesenteric, MAT; subcutaneous, SAT and visceral, VAT). Wistar rats were divided into the following 4 groups: standard chow (C), hypercaloric diet (HD), stress plus standard chow (S), and stress plus hypercaloric diet (SHD). The animals in the stress groups were subjected to chronic stress (placed inside a 25 cm × 7 cm plastic tube for 1h per day, 5 days per week for 6 weeks). The following parameters were evaluated: the weight of the liver, adrenal glands and specific adipose tissue; the delta weight; the Lee index; and the serum levels of leptin, corticosterone, glucose, total cholesterol, and triglycerides. The hypercaloric diet induced obesity in rats, increasing the Lee index, weight, leptin, triglycerides, and cholesterol levels. The stress decreased weight gain even in animals fed a hypercaloric diet but did not prevent a significant increase in the Lee index. However, an interaction between the independent factors (hypercaloric diet and stress) was observed, which is demonstrated by the increased serum leptin levels in the animals exposed to both protocols.
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Communication in palliative care: Perception of patients. J Geriatr Oncol 2012. [DOI: 10.1016/j.jgo.2012.10.045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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31
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Effects of Cross Slopes and Varying Surface Characteristics on the Mobility of Manual Wheelchair Users. Assist Technol 2012; 24:102-9. [DOI: 10.1080/10400435.2012.659326] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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SP4-29 Neighbourhood-based differences in physical activity: a deprived urban neighbourhood program approach (fitness centers--FCs) for reducing social inequalities in chronic diseases: preliminary comparisons. Br J Soc Med 2011. [DOI: 10.1136/jech.2011.142976p.23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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[Economic damage level for leaf-cutting ants in function of the productivity index of eucalyptus plantations in an Atlantic Forest region]. NEOTROPICAL ENTOMOLOGY 2011; 40:483-488. [PMID: 21952966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 11/14/2008] [Accepted: 03/01/2011] [Indexed: 05/31/2023]
Abstract
The production and quality of eucalyptus plantations have been studied in areas with different densities of ant nests, being important to estimate losses caused by leaf-cutting ants. The effects of leaf-cutting ant on wood production in differents productivity sites were studied in eucalyptus plantations in the region of Atlantic Forest, Minas Gerais State, Brazil from 2003 to 2006. Data of plots of the continuous forest inventory and data of leaf-cutting ant monitoring in eucalyptus plantations were obtained. Each unitary increment in the area of Atta spp. nests per hectare reduced the wood production of the eucalyptus forest between 0.04 and 0.13 m³.ha(-1), resulting in a level of economic damage for leaf-cutting ants between 13.4 and 39.2 m².ha(-1), in this region. Moreover, this study innovated when using indices of forest productivity (site index) that promote better adjustment of the models and produce estimate more accurate of the level of economic damage for leaf-cutting ants in cultivated forests, allowing to conclude that the increase of the total area of ant nests reduces the wooden volume of eucalyptus, proportionally to the productive potential of the forest.
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In vitro antioxidant, lipoxygenase and xanthine oxidase inhibitory activities of fractions from Cienfuegosia digitata Cav., Sida alba L. and Sida acuta Burn f. (Malvaceae). Pak J Biol Sci 2011; 13:1092-8. [PMID: 21313883 DOI: 10.3923/pjbs.2010.1092.1098] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
In this study polyphenol content, antioxidant activity, lipoxygenase (LOX) and Xanthine Oxidase (XO) inhibitory effects of n-hexane, dichloromethane, ethyl acetate and n-butanol fractions of aqueous acetone extracts from S. alba L., S. acuta Burn f and Cienfuegosia digitata Cav. were investigated. The total phenolics, flavonoids, flavonols and total tannins were determined by spectrophotometric methods using Folin-ciocalteu, AlCl3 reagents and tannic acid, respectively. The antioxidant potential was evaluated using three methods: inhibition of free radical 2,2-diphenyl-1-picrylhydramzyl (DPPH), ABTS radical cation decolorization assay and Iron (III) to iron (II) reduction activity (FRAP). For enzymatic activity, lipoxygenase and xanthine oxidase inhibitory activities were used. This study shows a relationship between polyphenol contents, antioxidant and enzymatic activities. Present results showed that ethyl acetate and dichloromethane fractions elicit the highest polyphenol content, antioxidant and enzymatic activities.
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Nursing personnel's perceptions of the organizational climate in public and private hospitals in Spain. Int Nurs Rev 2011; 58:234-41. [PMID: 21554298 DOI: 10.1111/j.1466-7657.2010.00871.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Organizational climate is considered one of the most significant determinants of individual and group behaviour in institutions. The International Council of Nurses has launched a campaign to improve professional recognition, support for personal development, safety and health at work. AIM To analyse nursing personnel's organizational climate perceptions using the Work Environment Scale (WES) in two categories of hospitals. METHODS A cross-sectional survey was undertaken in public and private hospitals. Two sampling approaches were used. At the Public Hospital, the sample was randomly selected (n = 297, 168 nurses and 129 other nursing personnel). At the Private Hospitals, a convenience sampling method was used (n = 66, 14 nurses and 52 other nursing personnel). The study used descriptive and inferential statistic analyses to explain the nursing personnel perception of organizational climate and to explore variations between nurses and other nursing personnel in both categories of hospitals. RESULTS Sixty per cent and seventy per cent of WES subscales yielded scores below the midpoint for the perception of work environment in public and private hospitals, respectively. Mean scores for both categories were similar, except for the subscales of Pressure and Control that were higher in Private Hospitals. In the Public Hospital, nurses scored significantly lower than other nursing personnel in Involvement, Innovation and Comfort. CONCLUSIONS Based on these findings, it is suggested that nurse managers should introduce strategies to set conditions for a better work environment in public and private hospitals.
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Biological and Toxicological Effects of Aqueous Acetone Extract of Cienfuegosia digitata Cav. (Malvaceae) in Mice and Rats. ACTA ACUST UNITED AC 2011. [DOI: 10.3923/jpt.2011.149.157] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Etudes phytochimique et pharmacologique de Bridelia ferruginea benth (euphorbiaceae) sur la motricite du Taenia coli de cobaye. ACTA ACUST UNITED AC 2010. [DOI: 10.4314/afsci.v5i2.61745] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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40
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Enhancing DNA repair in the skin: A pilot study of low-dose chloroquine and ultraviolet light. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.8566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Seasonal variation of soluble carbohydrates and starch in Echinolaena inflexa, a native grass species from the Brazilian savanna, and in the invasive grass Melinis minutiflora. BRAZ J BIOL 2010; 70:395-404. [DOI: 10.1590/s1519-69842010000200023] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2008] [Accepted: 05/14/2009] [Indexed: 11/22/2022] Open
Abstract
Echinolaena inflexa (Poir.) Chase is an abundant C3 grass species with high biomass production in the Brazilian savanna (cerrado); Melinis minutiflora Beauv. is an African C4 forage grass widespread in cerrado and probably displacing some native herbaceous species. In the present work, we analysed seasonally the content and composition of soluble carbohydrates, the starch amounts and the above-ground biomass (phytomass) of E. inflexa and M. minutiflora plants harvested in two transects at 5 and 130 m from the border in a restrict area of cerrado at the Biological Reserve and Experimental Station of Mogi-Guaçu (SP, Brazil). Results showed that water soluble carbohydrates and starch amounts from the shoots of both species varied according to the time of the year, whilst in the underground organs, variations were observed mainly in relation to the transects. Marked differences in the pattern of the above-ground biomass production between these two grasses relative to their location in the Reserve were also observed, with two peaks of the invasive species (July and January) at the Reserve border. The differences in carbohydrate accumulation, partitioning and composition of individual sugars concerning time of the year and location in the Reserve were more related to the annual growth cycle of both grasses and possibly to specific physiological responses of M. minutiflora to disturbed environments in the Reserve border.
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P180 Risk factors for cesarean section in patients with severe preeclampsia. Int J Gynaecol Obstet 2009. [DOI: 10.1016/s0020-7292(09)61671-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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P147 Associated factor to the brain-sparing effect in hypertension in pregnancy. Int J Gynaecol Obstet 2009. [DOI: 10.1016/s0020-7292(09)61638-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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P1032 Agreement between cytology, colposcopy and histopathology. Int J Gynaecol Obstet 2009. [DOI: 10.1016/s0020-7292(09)62518-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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P49 Factors associated to natimortality in a teaching hospital in Pernambuco, Brazil: A case control study. Int J Gynaecol Obstet 2009. [DOI: 10.1016/s0020-7292(09)61541-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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O887 Oral solution of misoprostol to induce labor: Pilot study. Int J Gynaecol Obstet 2009. [DOI: 10.1016/s0020-7292(09)61260-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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P598 Comparison of the intra and post operatory results between two hysterectomy techniques in patients with benign diseases in a teaching hospital in Brazil. A randomized clinical trial. Int J Gynaecol Obstet 2009. [DOI: 10.1016/s0020-7292(09)62088-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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P459 Epidemiologic profile and factors associated with complications in patients with gestational trophoblastic disease in a teaching hospital (IMIP) in Brazil. Int J Gynaecol Obstet 2009. [DOI: 10.1016/s0020-7292(09)61950-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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V30 Humanization of childbirth in Brazil: results in a public maternity in Northeast. Int J Gynaecol Obstet 2009. [DOI: 10.1016/s0020-7292(09)61467-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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P564 Risk factors for surgical site infection complications after cesarean section in a teaching hospital in Brazil. Int J Gynaecol Obstet 2009. [DOI: 10.1016/s0020-7292(09)62054-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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