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Santos Martins F, Feldens T, Guerra C, Santos JV. Long-term mental health care in Portugal: A portrait of the first years of activity. Int J Soc Psychiatry 2023; 69:1605-1616. [PMID: 37092774 DOI: 10.1177/00207640231168026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
Abstract
INTRODUCTION In Portugal, a reform to implement Long-term mental health care (LTMHC) started in 2017 allowing patients with severe mental illness receiving psychosocial rehabilitation to regain their autonomy and be reintegrated into their communities. AIM To describe the first steps of the Portuguese LTMHC implementation and to assess the relationship between the LTMHC's demand (referrals) and supply (vacancies and occupancy). METHODS We conducted a national retrospective observational study to analyse the LTMHC referrals, vacancies and occupancy between mid-2017 (LTMHC establishment) and December 2022. We described and analysed the associated indicators through time and geography, as well as performed a simultaneous regression model to evaluate the relationship between supply and demand. RESULTS There were 1,192 referrals to the LTMHC, of which 99 (8.3%) were made for childhood and adolescence structures. The maximum support residence (RAMa, 'Residência de apoio máximo'), designed for patients with higher disabilities, had the highest number of referrals. Additionally, since the opening of vacancies in different institutions, residential structures became quickly saturated. On the other hand, domiciliary services were those with the lowest occupancy. Our estimates support that the vacancies (supply) are induced by the referrals (demand), and referrals are also related to the location of LTMHC facilities. CONCLUSION LTMHC is still in the initial stage of development in Portugal, and it is expected to receive financial support through the Recovery and Resilience Programme. According to the occupancy rates and referrals made, residential structures seem to be a priority, being also important to explore the partial use of domiciliary services. The geographical distribution of vacancies can also be a concern, considering the important proximity to the community in LTMHC.
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Affiliation(s)
- Filipa Santos Martins
- Psychiatry and Mental Health Department, Centro Hospitalar Universitário de São João (CHUSJ), Porto, Portugal
- CINTESIS - Centre for Health Technology and Services Research, Porto, Portugal
| | - Tallys Feldens
- CINTESIS - Centre for Health Technology and Services Research, Porto, Portugal
- Federal University of Paraná, Paraná, Brazil
| | - Cátia Guerra
- Psychiatry and Mental Health Department, Centro Hospitalar Universitário de São João (CHUSJ), Porto, Portugal
- Clinical Neurosciences and Mental Health Department, Faculty of Medicine, University of Porto (FMUP), Porto, Portugal
| | - João Vasco Santos
- CINTESIS - Centre for Health Technology and Services Research, Porto, Portugal
- MEDCIDS - Department of Community Medicine, Information and Health Decision Sciences, Faculty of Medicine, University of Porto, Porto, Portugal
- Public Health Unit, ACES Grande Porto V - Porto Ocidental, Porto, Portugal
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Morais J, Roque M, Santos Martins F, Fonseca S, Moreira R. Suicide Risk in Obsessive-Compulsive Disorder: A Case Report. Cureus 2023; 15:e36863. [PMID: 37123675 PMCID: PMC10147481 DOI: 10.7759/cureus.36863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/29/2023] [Indexed: 03/31/2023] Open
Abstract
Obsessive-compulsive disorder (OCD) is a chronic psychiatric disorder characterized by obsessions and compulsions. It affects about 2.5% of people throughout their life and usually emerges in infancy/adolescence or early adulthood. Despite high levels of suffering and disability, high comorbidity rates, and low treatment response rates, suicidal behavior associated with this disorder was traditionally considered a rare phenomenon. However, recent studies recognize a significant risk of suicidal behavior in obsessive-compulsive patients. As a result, we describe a clinical case of attempted suicide in an obsessive-compulsive patient and discuss risk factors that have been considered predictive of suicide in OCD.
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Santos JV, Martins FS, Pestana J, Souza J, Freitas A, Cylus J. Should we adjust health expenditure for age structure on health systems efficiency? A worldwide analysis. Health Econ Rev 2023; 13:11. [PMID: 36781709 PMCID: PMC9926817 DOI: 10.1186/s13561-023-00421-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Accepted: 01/23/2023] [Indexed: 06/18/2023]
Abstract
INTRODUCTION Healthcare expenditure, a common input used in health systems efficiency analyses is affected by population age structure. However, while age structure is usually considered to adjust health system outputs, health expenditure and other inputs are seldom adjusted. We propose methods for adjusting Health Expenditure per Capita (HEpC) for population age structure on health system efficiency analyses and assess the goodness-of-fit, correlation, reliability and disagreement of different approaches. METHODS We performed a worldwide (188 countries) cross-sectional study of efficiency in 2015, using a stochastic frontier analysis. As single outputs, healthy life expectancy (HALE) at birth and at 65 years-old were considered in different models. We developed five models using as inputs: (1) HEpC (unadjusted); (2) age-adjusted HEpC; (3) HEpC and the proportion of 0-14, 15-64 and 65 + years-old; (4) HEpC and 5-year age-groups; and (5) HEpC ageing index. Akaike and Bayesian information criteria, Spearman's rank correlation, intraclass correlation coefficient and information-based measure of disagreement were computed. RESULTS Models 1 and 2 showed the highest correlation (0.981 and 0.986 for HALE at birth and HALE at 65 years-old, respectively) and reliability (0.986 and 0.988) and the lowest disagreement (0.011 and 0.014). Model 2, with age-adjusted HEpC, presented the lowest information criteria values. CONCLUSIONS Despite different models showing good correlation and reliability and low disagreement, there was important variability when age structure is considered that cannot be disregarded. The age-adjusted HE model provided the best goodness-of-fit and was the closest option to the current standard.
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Affiliation(s)
- João Vasco Santos
- MEDCIDS - Department of Community Medicine, Information and Health Decision Sciences, Faculty of Medicine, University of Porto, Porto, Portugal.
- CINTESIS - Centre for Health Technology and Services Research, Porto, Portugal.
- Public Health Unit, ARS Norte, Espinho/Gaia, Portugal.
| | | | - Joana Pestana
- Nova School of Business and Economics, Universidade Nova de Lisboa, Carcavelos, Portugal
| | - Júlio Souza
- MEDCIDS - Department of Community Medicine, Information and Health Decision Sciences, Faculty of Medicine, University of Porto, Porto, Portugal
- CINTESIS - Centre for Health Technology and Services Research, Porto, Portugal
| | - Alberto Freitas
- MEDCIDS - Department of Community Medicine, Information and Health Decision Sciences, Faculty of Medicine, University of Porto, Porto, Portugal
- CINTESIS - Centre for Health Technology and Services Research, Porto, Portugal
| | - Jonathan Cylus
- Department of Health Policy, London School of Economics and Political Science, London, UK
- European Observatory On Health Systems and Policies, London, UK
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Fernandes da Silva D, Santos JV, Santos Martins F. Number Needed to Quarantine and Proportion of Prevented Infectious Days by Quarantine: Evaluating the Effectiveness of COVID-19 Contact Tracing. Public Health Rep 2022; 137:1178-1186. [PMID: 35989593 PMCID: PMC9548448 DOI: 10.1177/00333549221114343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Objectives: Information on the effectiveness of COVID-19 contact tracing is lacking. We proposed 2 measures for evaluating the effectiveness of contact tracing and applied them in a public health unit in northern Portugal. Methods: This retrospective cohort study included the contacts of people with COVID-19 diagnosed July 1–September 15, 2020. We examined 2 measures: (1) number needed to quarantine (NNQ), as the number of quarantine person-days needed to prevent 1 potential infectious person-day; and (2) proportion of prevented infectious days by quarantine (PPID), as the number of potential infectious days prevented by quarantine divided by all infectious days. We assessed these measures by sociodemographic characteristics, types of contacts, and intervention timings (ie, time between diagnosis or symptom onset and intervention). We considered 3 scenarios for infectiousness periods: 10 days before to 10 days after symptom onset, 3 days before to 3 days after symptom onset, and 2 days before to 10 days after symptom onset. Results: We found an NNQ of 19.8-41.8 person-days and a PPID of 19.7%-38.2%, depending on the infectiousness period scenario. Effectiveness was higher among cohabitants and symptomatic contacts than among social or asymptomatic contacts. NNQ and PPID changed by intervention timings: the effectiveness of contact tracing decreased with time from diagnosis to quarantine of contacts and with time from symptom onset of the index case to contacts’ quarantine. Conclusions: These proposed measures of contact tracing effectiveness of communicable diseases can be important for decision making and prioritizing contact tracing when resources are scarce. They are also useful measures for communication with the general population, policy makers, and clinicians because they are easy to understand and use to assess the impact of health interventions.
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Affiliation(s)
- Diogo Fernandes da Silva
- Public Health Unit, Agrupamento de Centros de Saúde Grande Porto VIII–Espinho/Gaia, ARS Norte, Porto, Portugal
| | - João Vasco Santos
- Public Health Unit, Agrupamento de Centros de Saúde Grande Porto VIII–Espinho/Gaia, ARS Norte, Porto, Portugal
- Department of Community Medicine, Information and Health Decision Sciences (MEDCIDS), Faculty of Medicine, University of Porto, Porto, Portugal
- Centre for Health Technology and Services Research (CINTESIS), Porto, Portugal
| | - Filipa Santos Martins
- Public Health Unit, Agrupamento de Centros de Saúde Grande Porto VIII–Espinho/Gaia, ARS Norte, Porto, Portugal
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Santos JV, Martins FS, Vidal-Castro J, Silva-Rocha S, Areias R, Oliveira A, Santos S, Lamelas C, Amorim H, Martins A, Vieira M, Ramos JP, Pinto M. Indicators for local health plan monitoring and evaluation: A modified Delphi consensus. Public Health Nurs 2021; 39:752-759. [PMID: 34935199 DOI: 10.1111/phn.13036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 11/24/2021] [Accepted: 12/02/2021] [Indexed: 11/28/2022]
Abstract
OBJECTIVE There is still a lack of health indicators for monitoring and evaluating health planning at the local level. In Portugal, local health plans (LHP) include a prioritized set of health priorities, which should be monitored and evaluated. This study is an example of a low-resource method to identify and reuse indicators for LHP monitoring and evaluation already collected for other purposes. DESIGN AND SAMPLE A modified Delphi consensus method was applied, with three rounds of email rating questionnaires and a final meeting, between January 2018 and January 2019. The Delphi panel consisted of eight members from the Planning and Administration Group of the Espinho/Gaia Local Public Health Unit. MEASUREMENTS Panelists were asked to assess the indicators' validity for monitoring diseases/determinants from a pre-selected list of potential binomials between 140 PHC indicators and 15 diseases/determinants. RESULTS After four rounds, there was consensus in considering 141 binomials (34.0%) as appropriate, diabetes mellitus being the disease with more appropriate indicators. CONCLUSION This study portrays the applicability of a commonly used, easy and low-resource method in a Portuguese Local Public Health Unit to select and reuse primary health care indicators for LHP monitoring and evaluation.
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Affiliation(s)
- João Vasco Santos
- Public Health Unit, ACES Grande Porto VIII - Espinho/Gaia, ARS Norte, Vila Nova de Gaia, Portugal.,MEDCIDS - Department of Community Medicine, Information and Health Decision Sciences, Faculty of Medicine, University of Porto, Portugal.,CINTESIS - Centre for Health Technology and Services Research, Porto, Portugal
| | | | - Joana Vidal-Castro
- Public Health Unit, ACES Grande Porto VIII - Espinho/Gaia, ARS Norte, Vila Nova de Gaia, Portugal
| | - Sofia Silva-Rocha
- Public Health Unit, ACES Entre Douro e Vouga II - Aveiro Norte, ARS Norte, Porto, Portugal
| | - Rita Areias
- Public Health Unit, ACES Alto Ave - Guimarães, Vizela e Terras de Basto, ARS Norte, Porto, Portugal
| | - António Oliveira
- Public Health Unit, ACES Grande Porto VIII - Espinho/Gaia, ARS Norte, Vila Nova de Gaia, Portugal
| | - Sandra Santos
- Public Health Unit, ACES Grande Porto VIII - Espinho/Gaia, ARS Norte, Vila Nova de Gaia, Portugal
| | - Cristina Lamelas
- Public Health Unit, ACES Grande Porto VIII - Espinho/Gaia, ARS Norte, Vila Nova de Gaia, Portugal
| | - Helena Amorim
- Public Health Unit, ACES Entre Douro e Vouga I - Feira/Arouca, ARS Norte, Porto, Portugal
| | - Alexandra Martins
- Faculty of Psychology and Education Sciences, University of Porto, Porto, Portugal
| | - Mariana Vieira
- Faculty of Psychology and Education Sciences, University of Porto, Porto, Portugal
| | - João Pedro Ramos
- Subgroup of Terrorism and Security of the Crime and Justice Group of Campbell Collaboration, Porto, Portugal
| | - Marta Pinto
- CINTESIS - Centre for Health Technology and Services Research, Porto, Portugal.,Faculty of Psychology and Education Sciences, University of Porto, Porto, Portugal.,Subgroup of Terrorism and Security of the Crime and Justice Group of Campbell Collaboration, Porto, Portugal
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Vasco Santos J, Martins FS, Lopes F, Souza J, Freitas A. Discharge status of the patient: evaluating hospital data quality with a focus on long-term and palliative care patient data. HEALTH INF MANAG J 2021; 52:125-127. [PMID: 34846179 DOI: 10.1177/18333583211054161] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- João Vasco Santos
- MEDCIDS - Department of Community Medicine, Information and Health Decision Sciences, Faculty of Medicine, 26706University of Porto, Porto, Portugal.,CINTESIS - Centre for Health Technology and Services Research, Porto, Portugal.,Public Health Unit, ACES Grande Porto VIII - Espinho/Gaia, ARS Norte, Portugal
| | - Filipa Santos Martins
- CINTESIS - Centre for Health Technology and Services Research, Porto, Portugal.,285211Centro Hospitalar Universitário de São João, Porto, Portugal
| | - Fernando Lopes
- MEDCIDS - Department of Community Medicine, Information and Health Decision Sciences, Faculty of Medicine, 26706University of Porto, Porto, Portugal.,CINTESIS - Centre for Health Technology and Services Research, Porto, Portugal
| | - Júlio Souza
- MEDCIDS - Department of Community Medicine, Information and Health Decision Sciences, Faculty of Medicine, 26706University of Porto, Porto, Portugal.,CINTESIS - Centre for Health Technology and Services Research, Porto, Portugal
| | - Alberto Freitas
- MEDCIDS - Department of Community Medicine, Information and Health Decision Sciences, Faculty of Medicine, 26706University of Porto, Porto, Portugal.,CINTESIS - Centre for Health Technology and Services Research, Porto, Portugal.,Public Health Unit, ACES Grande Porto VIII - Espinho/Gaia, ARS Norte, Portugal.,285211Centro Hospitalar Universitário de São João, Porto, Portugal
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Ribeiro WR, Queiroz AG, Mendes E, Casaro MB, Nascimento CM, Coelho LSSF, Martins FS, Leite-Silva VR, Ferreira CM. Preventive oral supplementation with Bifidobacterium longum 5 1A alleviates oxazolone-induced allergic contact dermatitis-like skin inflammation in mice. Benef Microbes 2021; 12:199-209. [PMID: 33573507 DOI: 10.3920/bm2020.0134] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Allergic contact dermatitis (ACD) is a common allergic skin disease that affects individuals subjected to different antigen exposure conditions and significantly impacts the quality of life of those affected. Numerous studies have demonstrated that probiotics suppress inflammation through immunomodulatory effects. In this study, we aimed to evaluate the effect of the probiotic Bifidobacterium longum 51A as a preventive treatment for ACD using an oxazolone-induced murine model. We demonstrated that B. longum 51A exerted a prophylactic effect on oxazolone-induced ACD-like skin inflammation via reductions in ear and dermal thickness and leucocyte infiltration. The administration of inactivated B. longum 51A did not affect oxazolone-induced ACD-like skin inflammation, suggesting that the bacteria must be alive to be effective. Given that B. longum 51A is an acetate producer, we treated mice with acetate intraperitoneally, which also prevented ear and dermal thickening. Moreover, the tissue levels of the inflammatory cytokines and chemokines interleukin (IL)-10, IL-33, tumour necrosis factor-α, chemokine (C-C motif) ligand 2/monocyte chemoattractant protein-1 and chemokine (C-C motif) ligand 5/RANTES were significantly reduced after probiotic treatment, but only IL-33 and IL-10 were reduced when the mice were treated with acetate. These results show that B. longum 51A exerted a potential prophylactic effect on skin inflammation and that acetate represents one potential mechanism. However, other factors are likely involved since these two treatments do not yield the same results.
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Affiliation(s)
- W R Ribeiro
- Department of Pharmaceutical Sciences, Institute of Environmental, Chemistry and Pharmaceutical Sciences, Federal University of São Paulo, R. São Nicolau, 210, Diadema, SP 09913-030, Brazil
| | - A G Queiroz
- Department of Pharmaceutical Sciences, Institute of Environmental, Chemistry and Pharmaceutical Sciences, Federal University of São Paulo, R. São Nicolau, 210, Diadema, SP 09913-030, Brazil
| | - E Mendes
- Department of Pharmaceutical Sciences, Institute of Environmental, Chemistry and Pharmaceutical Sciences, Federal University of São Paulo, R. São Nicolau, 210, Diadema, SP 09913-030, Brazil
| | - M B Casaro
- Department of Pharmaceutical Sciences, Institute of Environmental, Chemistry and Pharmaceutical Sciences, Federal University of São Paulo, R. São Nicolau, 210, Diadema, SP 09913-030, Brazil
| | - C M Nascimento
- Department of Pharmaceutical Sciences, Institute of Environmental, Chemistry and Pharmaceutical Sciences, Federal University of São Paulo, R. São Nicolau, 210, Diadema, SP 09913-030, Brazil
| | - L S S F Coelho
- Department of Pharmaceutical Sciences, Institute of Environmental, Chemistry and Pharmaceutical Sciences, Federal University of São Paulo, R. São Nicolau, 210, Diadema, SP 09913-030, Brazil
| | - F S Martins
- Department of Microbiology, Institute of Biological Sciences, Federal University of Minas Gerais, Avenida Presidente Antônio Carlos 6627, Campus Pampulha UFMG Belo Horizonte, MG 31970201, Brazil
| | - V R Leite-Silva
- Department of Pharmaceutical Sciences, Institute of Environmental, Chemistry and Pharmaceutical Sciences, Federal University of São Paulo, R. São Nicolau, 210, Diadema, SP 09913-030, Brazil.,Therapeutics Research Centre, Translational Research Institute, Diamantina Institute, University of Queensland, 37 Kent St, Woolloongabba, QLD 4102, Australia
| | - C M Ferreira
- Department of Pharmaceutical Sciences, Institute of Environmental, Chemistry and Pharmaceutical Sciences, Federal University of São Paulo, R. São Nicolau, 210, Diadema, SP 09913-030, Brazil
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Souza ELS, Campos CLV, Reis DC, Cassali GD, Generoso SV, Cardoso VN, Azevedo V, Medeiros JD, Fernandes GR, Nicoli JR, Martins FS. Beneficial effects resulting from oral administration of Escherichia coli Nissle 1917 on a chronic colitis model. Benef Microbes 2020; 11:779-790. [PMID: 33191778 DOI: 10.3920/bm2020.0045] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Inflammatory bowel diseases (IBD) are chronic processes involving a deregulated immune response against intestinal microbiota in genetically susceptible individuals. Ulcerative colitis (UC) is an IBD restricted to colonic mucosa and its chronicity is a predisposing factor for colorectal cancer (CRC). Probiotics have been investigated as an adjuvant treatment for UC, and Escherichia coli Nissle 1917 (EcN) was the focus of our investigation. The aim of this study was to investigate the preventive effect of the EcN probiotic in an experimental model of chronic colitis in germ-free (GF) and conventional (CV) mice. CV female mice were used for clinical, immunological and permeability experiments. GF mice were used for a faecal microbiota transplantation assay. To induce colitis, three cycles of 3.0% dextran sulphate sodium (DSS) were administered to the animals. For probiotic treatment, the mice received a daily intragastric gavage of 9.0 log10 cfu of EcN, beginning 10 days before colitis induction and continuing until the end of the experiment. EcN presented beneficial effects when administered preventively. Daily Disease Activity Index (DAI) evolution demonstrated significant difference in remission periods after the first two DSS cycles and during the third one. Reduction in bacterial translocation after probiotic treatment indicated protection of the intestinal barrier. Associated with mucosal preservation, restoration of secretory immunoglobulin A levels and reduction of interleukin (IL)-5, IL-13, tumour necrosis factor and interferon-γ levels were observed in EcN treatment. Finally, when microbiota modification was verified, 16S rRNA-based compositional analysis showed variation of intestinal microbiota between the control and colitis groups. After faecal transplantation using GF mice, it was observed that EcN treatment in CV mice might result in modulated intestinal microbiota. This was observed indirectly in the reduced daily DAI, when colitis was compared with treated group. In conclusion, EcN presented beneficial effects in this model, suggesting its usefulness for treating UC.
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Affiliation(s)
- E L S Souza
- Department of Microbiology, Federal University of Minas Gerais, Belo Horizonte, CEP 31270-901, MG, Brazil
| | - C L V Campos
- Department of Microbiology, Federal University of Minas Gerais, Belo Horizonte, CEP 31270-901, MG, Brazil
| | - D C Reis
- Department of General Pathology, Federal University of Minas Gerais, Presidente Antônio Carlos 6627, Belo Horizonte, CEP 31270-901, MG, Brazil
| | - G D Cassali
- Department of General Pathology, Federal University of Minas Gerais, Presidente Antônio Carlos 6627, Belo Horizonte, CEP 31270-901, MG, Brazil
| | - S V Generoso
- Department of Nutrition, Federal University of Minas Gerais, Alfredo Balena 190, Belo Horizonte, CEP 30130-100, MG, Brazil
| | - V N Cardoso
- Department of Clinical and Toxicological Analysis, Federal University of Minas Gerais, Av. Antônio Carlos 6627, Pampulha, Belo Horizonte, CEP 31270-901, MG, Brazil
| | - V Azevedo
- Department of Genetic, Ecology and Evolution, Federal University of Minas Gerais, Belo Horizonte, CEP 31330-500, MG, Brazil
| | - J D Medeiros
- René Rachou Institute - Fiocruz Minas, Augusto de Lima 1715, Belo Horizonte, MG, Brazil
| | - G R Fernandes
- René Rachou Institute - Fiocruz Minas, Augusto de Lima 1715, Belo Horizonte, MG, Brazil
| | - J R Nicoli
- Department of Microbiology, Federal University of Minas Gerais, Belo Horizonte, CEP 31270-901, MG, Brazil
| | - F S Martins
- Department of Microbiology, Federal University of Minas Gerais, Belo Horizonte, CEP 31270-901, MG, Brazil
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Miranda VC, Santos SS, Assis HC, Faria AMC, Quintanilha MF, Morão RP, Nicoli JR, Cara DC, Martins FS. Effect of Saccharomyces cerevisiae UFMG A-905 in a murine model of food allergy. Benef Microbes 2020; 11:255-268. [PMID: 32264688 DOI: 10.3920/bm2019.0113] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Food allergy is triggered when there is an abnormal activation of the immune system by food allergens. Currently, there is no curative therapy for this pathological condition. Due to the immunomodulatory properties of probiotics they are potential candidates as therapeutic tools for food allergy. Therefore, the aim of this study was to evaluate the probiotic effect of Saccharomyces cerevisiae UFMG A-905 (905) in an in vivo model of food allergy. Probiotic effect was assessed by clinical, histological, immunological and microbiological parameters analysis. Furthermore, we also evaluated if 905 after inactivation has an effect, as well as if such an effect is dose dependent. Our results showed that oral administration of only viable 905 promotes a significant attenuation of tissue injury and myeloperoxidase (MPO) activity levels. Moreover, the treatment reduced interleukin 17 levels, and administration of the supernatant from the yeast culture also promoted a significant decrease in MPO levels. However, considering the systemic parameters, immunoglobulin (Ig)E and IgG anti-ovalbumin, which are essentials for triggering the allergic process, there was no effect, suggesting that the yeast promotes a local but not a systemic effect in the model evaluated. In addition, we found that only high doses of viable 905 were able to attenuate the signs of inflammation. In conclusion, oral administration of 905 led to a local effect that depends on the viability of the yeast.
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Affiliation(s)
- V C Miranda
- Department of Microbiology, Federal University of Minas Gerais, Belo Horizonte, Av. Antônio Carlos, 6627, 30270-901 MG, Brazil
| | - S S Santos
- Department of Microbiology, Federal University of Minas Gerais, Belo Horizonte, Av. Antônio Carlos, 6627, 30270-901 MG, Brazil
| | - H C Assis
- Department of Biochemistry and Immunology, Federal University of Minas Gerais, Av. Pres. Antônio Carlos 6627, Belo Horizonte, 31270-901 MG, Brazil
| | - A M C Faria
- Department of Biochemistry and Immunology, Federal University of Minas Gerais, Av. Pres. Antônio Carlos 6627, Belo Horizonte, 31270-901 MG, Brazil
| | - M F Quintanilha
- Department of Microbiology, Federal University of Minas Gerais, Belo Horizonte, Av. Antônio Carlos, 6627, 30270-901 MG, Brazil
| | - R P Morão
- Department of Microbiology, Federal University of Minas Gerais, Belo Horizonte, Av. Antônio Carlos, 6627, 30270-901 MG, Brazil
| | - J R Nicoli
- Department of Microbiology, Federal University of Minas Gerais, Belo Horizonte, Av. Antônio Carlos, 6627, 30270-901 MG, Brazil
| | - D C Cara
- Department of Morphology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - F S Martins
- Department of Microbiology, Federal University of Minas Gerais, Belo Horizonte, Av. Antônio Carlos, 6627, 30270-901 MG, Brazil
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10
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Abrantes FA, Nascimento BB, Andrade MER, de Barros PAV, Cartelle CT, Martins FS, Nicoli JR, Arantes RME, Generoso SV, Fernandes SOA, Cardoso VN. Treatment with Bifidobacterium longum 5 1A attenuates intestinal damage and inflammatory response in experimental colitis. Benef Microbes 2019; 11:47-57. [PMID: 32066260 DOI: 10.3920/bm2019.0098] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
This study evaluated the effects of Bifidobacterium longum 51A on the intestinal mucosa and inflammatory response in experimental colitis. Colitis was induced by administration of 3.5% dextran sodium sulphate (DSS) solution for 7 days. Two periods of administration were performed: treatment (T) group, mice received Bifidobacterium only during disease induction (7 days); total treatment (TT) group, mice received Bifidobacterium for 10 days before and during disease induction. The probiotic effects on intestinal permeability, inflammatory infiltrate, histological analysis, cytokines, chemokines and sIgA were evaluated. Bifidobacterium administration in the T group showed reduction in intestinal permeability and lower IL-1β, myeloperoxidase, and eosinophil peroxidase levels compared to those in the colitis group (P<0.05). Bifidobacterium administration in the TT group attenuated severe lesions in the colon and reduced eosinophil peroxidase level (P<0.05). B. longum 51A treatment modality was more effective than total treatment and reduced the inflammatory response and its consequences on intestinal epithelium.
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Affiliation(s)
- F A Abrantes
- Departamento de Alimentos, Faculdade de Farmácia, Universidade Federal de Minas Gerais. Av. Presidente Antônio Carlos 6627, Belo Horizonte, MG 31270-901, Brazil
| | - B B Nascimento
- Departamento de Patologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Presidente Antônio Carlos 6627, Belo Horizonte, MG 31270-901, Brazil
| | - M E R Andrade
- Departamento de Alimentos, Faculdade de Farmácia, Universidade Federal de Minas Gerais. Av. Presidente Antônio Carlos 6627, Belo Horizonte, MG 31270-901, Brazil
| | - P A V de Barros
- Departamento de Análises Clínicas e Toxicológicas, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Av. Presidente Antônio Carlos 6627, Belo Horizonte, MG 31270-901, Brazil
| | - C T Cartelle
- Departamento de Patologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Presidente Antônio Carlos 6627, Belo Horizonte, MG 31270-901, Brazil
| | - F S Martins
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Presidente Antônio Carlos 6627, Belo Horizonte, MG 31270-901, Brazil
| | - J R Nicoli
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Presidente Antônio Carlos 6627, Belo Horizonte, MG 31270-901, Brazil
| | - R M E Arantes
- Departamento de Patologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Presidente Antônio Carlos 6627, Belo Horizonte, MG 31270-901, Brazil
| | - S V Generoso
- Departamento de Nutrição, Escola de Enfermagem, Universidade Federal de Minas Gerais, Av Professor Alfredo Balena 190, Belo Horizonte, MG 30130-100, Brazil
| | - S O A Fernandes
- Departamento de Análises Clínicas e Toxicológicas, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Av. Presidente Antônio Carlos 6627, Belo Horizonte, MG 31270-901, Brazil
| | - V N Cardoso
- Departamento de Análises Clínicas e Toxicológicas, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Av. Presidente Antônio Carlos 6627, Belo Horizonte, MG 31270-901, Brazil
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11
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Silva AKS, Silva TRN, Nicoli JR, Vasquez-Pinto LMC, Martins FS. In vitro evaluation of antagonism, modulation of cytokines and extracellular matrix proteins by Bifidobacterium strains. Lett Appl Microbiol 2018; 67:497-505. [PMID: 30099746 DOI: 10.1111/lam.13062] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 06/30/2018] [Accepted: 08/05/2018] [Indexed: 12/31/2022]
Abstract
A healthy skin provides a protective barrier against pathogenic micro-organisms. Recent studies have shown that probiotics, as those of Bifidobacterium genus, could act beneficially in dermatology, both when ingested and by topical use. In the present study, we evaluated by in vitro antagonism assays and using two skin cell lines the potential of four strains of Bifidobacterium spp. Among the four bifidobacteria, Bifidobacterium longum 51A was the only one able to inhibit the growth of the eight pathogenic indicators tested. Production of some cytokines and extracellular matrix proteins was determined when ccc or inactivated cells of the bifidobacteria were incubated with keratinocyte and/or fibroblast cell cultures. Significant results were observed only for IL-6, IL-8 and IL-18 production, and inactivated Bifidobacterium pseudolongum 1191A was the only one which significantly stimulated collagen production, whereas lumican was stimulated by treatments with live Bifidobacterium bifidum 1622A , B. longum 51A and B. pseudolongum 1191A . Highest adhesion and internalization capabilities were observed with B. bifidum 1622A and Bifidobacterium breve 1101A . Concluding, B. longum 51A was highlighted for its antagonistic capacity and B. bifidum 1622A and B. pseudolongum 1191A for stimulating the production of cytokines and proteins of the extracellular matrix. SIGNIFICANCE AND IMPACT OF THE STUDY The skin is the first line of defence against invasive micro-organisms, and its local microbiota provides additional protective functions based on antagonism against pathogenic micro-organisms and immunomodulation. Based on in vitro assays using Bifidobacterium spp. we demonstrated the antagonistic potential, as well as capacity in stimulating the production of cytokines and proteins of the extracellular matrix that these bacteria may exert on skin cells. This positive influence suggests the use of a consortium of these bifidobacteria in a topical product for dermatological treatments.
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Affiliation(s)
- A K S Silva
- Department of Microbiology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - T R N Silva
- Department of Microbiology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - J R Nicoli
- Department of Microbiology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - L M C Vasquez-Pinto
- Department of Innovation and Technology of Products, Natura Cosméticos S.A., São Paulo, Brazil
| | - F S Martins
- Department of Microbiology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil
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12
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Canesso MCC, Lemos L, Neves TC, Marim FM, Castro TBR, Veloso ÉS, Queiroz CP, Ahn J, Santiago HC, Martins FS, Alves-Silva J, Ferreira E, Cara DC, Vieira AT, Barber GN, Oliveira SC, Faria AMC. The cytosolic sensor STING is required for intestinal homeostasis and control of inflammation. Mucosal Immunol 2018; 11:820-834. [PMID: 29346345 DOI: 10.1038/mi.2017.88] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Accepted: 09/17/2017] [Indexed: 02/06/2023]
Abstract
STING (stimulator of interferon genes) is a cytosolic sensor for cyclic dinucleotides and also an adaptor molecule for intracellular DNA receptors. Although STING has important functions in the host defense against pathogens and in autoimmune diseases, its physiological relevance in intestinal homeostasis is largely unknown. In this study, we show that STING-/- mice presented defective protective mechanisms of intestinal mucosa, including decreased number of goblet cells, diminished mucus production, and lower levels of secretory IgA, when compared with wild-type (WT) mice. Fecal content and microbiota DNA could activate STING, indicating a role of this molecule in gut. Microbiota composition was altered in STING-/- mice toward a more inflammatory profile, evidencing a reduction in the Allobacolum and Bifidobacterium groups along with increase in Disulfovibrio bacteria. Absence of STING lead to decrease in induced intraepithelial lymphocytes (IEL) and to increase in group 1 innate lymphoid cell (ILC1) as well as ILC3 frequencies and decrease in ILC2 in the colon. Development and function of Foxp3+ and LAP+ regulatory T cells were also compromised in STING-/- mice. Moreover, these mice were highly susceptible to dextran sodium sulfate-induced colitis, T-cell-induced colitis, and enteric Salmonella typhimurium infection when compared with WT animals. Therefore, our results identify an important role of STING in maintaining gut homeostasis and also a protective effect in controlling gut inflammation.
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Affiliation(s)
- M C C Canesso
- Department of Biochemistry and Immunology, Biological Science Institute, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - L Lemos
- Department of Biochemistry and Immunology, Biological Science Institute, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - T C Neves
- Department of Biochemistry and Immunology, Biological Science Institute, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - F M Marim
- Department of Biochemistry and Immunology, Biological Science Institute, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - T B R Castro
- Department of Biochemistry and Immunology, Biological Science Institute, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - É S Veloso
- Department of Pathology, Biological Science Institute, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - C P Queiroz
- Department of Biochemistry and Immunology, Biological Science Institute, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - J Ahn
- Department of Cell Biology, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - H C Santiago
- Department of Biochemistry and Immunology, Biological Science Institute, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - F S Martins
- Department of Microbiology, Biological Science Institute, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - J Alves-Silva
- Department of Biochemistry and Immunology, Biological Science Institute, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - E Ferreira
- Department of Pathology, Biological Science Institute, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - D C Cara
- Department of Morphology, Biological Science Institute, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - A T Vieira
- Department of Biochemistry and Immunology, Biological Science Institute, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - G N Barber
- Department of Cell Biology, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - S C Oliveira
- Department of Biochemistry and Immunology, Biological Science Institute, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - A M C Faria
- Department of Biochemistry and Immunology, Biological Science Institute, Federal University of Minas Gerais, Belo Horizonte, Brazil
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13
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Casaro MC, Crisma AR, Vieira AT, Silva GHM, Mendes E, Ribeiro WR, Martins FS, Ferreira CM. Prophylactic Bifidobacterium adolescentis ATTCC 15703 supplementation reduces partially allergic airway disease in Balb/c but not in C57BL/6 mice. Benef Microbes 2018; 9:465-476. [PMID: 29633635 DOI: 10.3920/bm2017.0073] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Allergic asthma is a chronic disease mainly characterised by eosinophil inflammation and airway remodelling. Many studies have shown that the gut microbiota of allergic individuals differs from that of non-allergic individuals. Although high levels of bifidobacteria have been associated with healthy persons, Bifidobacterium adolescentis ATCC 15703, a gut bacteria, has been associated with allergic individuals in some clinical studies. The relationship between B. adolescentis ATCC 15703 and asthma or allergies has not been well elucidated, and its effect may be dependent on the host's genetic profile or disease state. To elucidate this question, we evaluated the role of preventive B. adolescentis ATCC 15703 treatment on experimental allergic airway inflammation in two genetically different mouse strains, Balb/c and C57BL/6 (B6). Balb/c mice display a greater predisposition to develop allergic responses than B6 mice. Oral preventive treatment with B. adolescentis ATCC 15703 modulated experimental allergic airway inflammation, specifically in Balb/c mice, which showed decreased levels of eosinophils in the airway. B6 mice did not exhibit any significant alterations in eosinophils but showed an increased influx of total leukocytes and neutrophils into the airway. The mechanism underlying the beneficial effects of these bacteria in experimental allergic mice may involve products of bacteria metabolism, as dead bacteria did not mimic the ability of live B. adolescentis ATCC 15703 to attenuate the influx of eosinophils into the airway. To conclude, preventive oral B. adolescentis ATCC 15703 treatment can attenuate the major characteristic of allergic asthma, eosinophil airway influx, in Balb/c but not B6 mice. These results suggest that oral treatment with this specific live bacterial strain may have therapeutic potential for the treatment of allergic airway disease, although its effect is mouse-strain-dependent.
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Affiliation(s)
- M C Casaro
- 1 Institute of Environmental, Chemistry and Pharmaceutical Sciences, Department of Pharmaceutics Sciences, Federal University of São Paulo, 09972-270 Diadema, SP, Brazil.,2 Institute of Biomedical Sciences, University de São Paulo, Department of Physiology and Biophysics, Av. Prof. Lineu Prestes, 1524, 05508-000 São Paulo, SP, Brazil
| | - A R Crisma
- 2 Institute of Biomedical Sciences, University de São Paulo, Department of Physiology and Biophysics, Av. Prof. Lineu Prestes, 1524, 05508-000 São Paulo, SP, Brazil
| | - A T Vieira
- 3 Institute of Biological Sciences, Department of Immunology, Federal University of Minas Gerais, 31270-901 Belo Horizonte, MG, Brazil
| | - G H M Silva
- 1 Institute of Environmental, Chemistry and Pharmaceutical Sciences, Department of Pharmaceutics Sciences, Federal University of São Paulo, 09972-270 Diadema, SP, Brazil.,2 Institute of Biomedical Sciences, University de São Paulo, Department of Physiology and Biophysics, Av. Prof. Lineu Prestes, 1524, 05508-000 São Paulo, SP, Brazil
| | - E Mendes
- 1 Institute of Environmental, Chemistry and Pharmaceutical Sciences, Department of Pharmaceutics Sciences, Federal University of São Paulo, 09972-270 Diadema, SP, Brazil
| | - W R Ribeiro
- 1 Institute of Environmental, Chemistry and Pharmaceutical Sciences, Department of Pharmaceutics Sciences, Federal University of São Paulo, 09972-270 Diadema, SP, Brazil
| | - F S Martins
- 4 Institute of Biological Sciences, Department of Microbiology, Federal University of Minas Gerais, Avenida Presidente Antônio Carlos 6627, C.P. 486, Pampulha-Campus, 31270-901, Belo Horizonte, MG, Brazil
| | - C M Ferreira
- 1 Institute of Environmental, Chemistry and Pharmaceutical Sciences, Department of Pharmaceutics Sciences, Federal University of São Paulo, 09972-270 Diadema, SP, Brazil
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14
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Bastos RW, Pedroso SHSP, Vieira AT, Moreira LMC, França CS, Cartelle CT, Arantes RME, Generoso SV, Cardoso VN, Neves MJ, Nicoli JR, Martins FS. Saccharomyces cerevisiae UFMG A-905 treatment reduces intestinal damage in a murine model of irinotecan-induced mucositis. Benef Microbes 2016; 7:549-57. [PMID: 27133563 DOI: 10.3920/bm2015.0190] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Indigenous microbiota plays a crucial role in the development of several intestinal diseases, including mucositis. Gastrointestinal mucositis is a major and serious side effect of cancer therapy, and there is no effective therapy for this clinical condition. However, some probiotics have been shown to attenuate such conditions. To evaluate the effects of Saccharomyces cerevisiae UFMG A-905 (Sc-905), a potential probiotic yeast, we investigated whether pre- or post-treatment with viable or inactivated Sc-905 could prevent weight loss and intestinal lesions, and maintain integrity of the mucosal barrier in a mucositis model induced by irinotecan in mice. Only post-treatment with viable Sc-905 was able to protect mice against the damage caused by chemotherapy, reducing the weight loss, increase of intestinal permeability and jejunal lesions (villous shortening). Besides, this treatment reduced oxidative stress, prevented the decrease of goblet cells and stimulated the replication of cells in the intestinal crypts of mice with experimental mucositis. In conclusion, Sc-905 protects animals against irinotecan-induced mucositis when administered as a post-treatment with viable cells, and this effect seems to be related with the reduction of oxidative stress and preservation of intestinal mucosa.
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Affiliation(s)
- R W Bastos
- 1 Department of Microbiology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - S H S P Pedroso
- 1 Department of Microbiology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - A T Vieira
- 1 Department of Microbiology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - L M C Moreira
- 1 Department of Microbiology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - C S França
- 1 Department of Microbiology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - C T Cartelle
- 2 Department of General Pathology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - R M E Arantes
- 2 Department of General Pathology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - S V Generoso
- 3 Department of Basic Nursing, School of Nursing, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - V N Cardoso
- 4 Department of Clinical and Toxicological Analysis, Faculty of Pharmacy, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - M J Neves
- 5 Center of Nuclear Technology Development/Brazilian Nuclear Energy Commission (CDTN/CNEN), Belo Horizonte, MG, Brazil
| | - J R Nicoli
- 1 Department of Microbiology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - F S Martins
- 1 Department of Microbiology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
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15
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Elian SDA, Souza ELS, Vieira AT, Teixeira MM, Arantes RME, Nicoli JR, Martins FS. Bifidobacterium longum subsp. infantis BB-02 attenuates acute murine experimental model of inflammatory bowel disease. Benef Microbes 2016; 6:277-86. [PMID: 25391346 DOI: 10.3920/bm2014.0070] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Inflammatory bowel diseases (IBD) are chronic inflammatory conditions, characterised by remissions and relapses episodes, whose main manifestations are ulcerative colitis and Crohn's disease. Ulcerative colitis (UC), one of the main forms of IBD, has as standard treatment the use of corticosteroids and anti-inflammatory drugs. The use of antibiotics has been also reported, but the possible adverse effects, such as disturbance of the indigenous microbiota or resistance induction, should be taken into consideration, and thus the use of probiotics emerges as a possible alternative option of treatment. In this study, the oral administration of Bifidobacterium longum subsp. infantis BB-02 was evaluated as a preventive strategy for acute experimental UC induced in female BALB/c mice by ingestion of 3.5% dextran sulphate sodium in drinking water during 7 days. During this time, the daily disease activity index was evaluated, and on the seventh day the animals were euthanised to collect intestines and liver for analysis. Treatment with the probiotic resulted in clinical improvement of the animals. The histological and morphometric analyses showed a reduction of lesions and oedema in the gut, but there was no increase in the production of mucin. The dosage of secretory immunoglobulin A was significantly higher in the colitis group and reduced in the group treated with the probiotic. There was also a reduction in the inflammation of the colon, as demonstrated by a decrease in neutrophils infiltration, and KC/CXCL-1 levels. The intestinal permeability, which is typically increased during the onset of IBD, was also reduced by treatment with probiotic. Based on these data, it can be concluded that the bacterium B. infantis BB-02 has a probiotic potential for the attenuation of UC, but further studies should be conducted to verify the mechanism of protective action of the bacterium.
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Affiliation(s)
- S D A Elian
- Department of Microbiology, Institute of Biological Sciences, Federal University of Minas Gerais, Avenida Presidente Antônio Carlos 6627, Pampulha Campus UFMG, 31270-901 Belo Horizonte, MG, Brazil
| | - E L S Souza
- Department of Microbiology, Institute of Biological Sciences, Federal University of Minas Gerais, Avenida Presidente Antônio Carlos 6627, Pampulha Campus UFMG, 31270-901 Belo Horizonte, MG, Brazil
| | - A T Vieira
- Department of Microbiology, Institute of Biological Sciences, Federal University of Minas Gerais, Avenida Presidente Antônio Carlos 6627, Pampulha Campus UFMG, 31270-901 Belo Horizonte, MG, Brazil Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Avenida Presidente Antônio Carlos 6627, Pampulha Campus UFMG, 31270-901 Belo Horizonte, MG, Brazil
| | - M M Teixeira
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Avenida Presidente Antônio Carlos 6627, Pampulha Campus UFMG, 31270-901 Belo Horizonte, MG, Brazil
| | - R M E Arantes
- Department of General Pathology, Institute of Biological Sciences, Federal University of Minas Gerais, Avenida Presidente Antônio Carlos 6627, Pampulha Campus UFMG, 31270-901 Belo Horizonte, MG, Brazil
| | - J R Nicoli
- Department of Microbiology, Institute of Biological Sciences, Federal University of Minas Gerais, Avenida Presidente Antônio Carlos 6627, Pampulha Campus UFMG, 31270-901 Belo Horizonte, MG, Brazil
| | - F S Martins
- Department of Microbiology, Institute of Biological Sciences, Federal University of Minas Gerais, Avenida Presidente Antônio Carlos 6627, Pampulha Campus UFMG, 31270-901 Belo Horizonte, MG, Brazil
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16
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Vieira AT, Galvão I, Amaral FA, Teixeira MM, Nicoli JR, Martins FS. Oral treatment with Bifidobacterium longum 51A reduced inflammation in a murine experimental model of gout. Benef Microbes 2015; 6:799-806. [PMID: 26322542 DOI: 10.3920/bm2015.0015] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Gout is an acute inflammatory disease characterised by the presence of uric acid crystals in the joint. This event promotes neutrophil infiltration and activation that leads to tissue damage. We investigated here whether the oral administration of the probiotic strain Bifidobacterium longum 5(1A) (BL) could ameliorate monosodium urate crystal (MSU)-induced inflammation in a murine model of gout. Mice received oral administration of BL or saline daily for 7 days and then were injected with MSU in the knee cavity. Treatment with BL significantly alleviated the inflammatory parameters, as seen by reduced hypernociception, reduced neutrophil accumulation in the joint and myeloperoxidase activity in periarticular tissue. There was inhibition of the production of CXCL1 and interleukin(IL)-1β in joints. Levels of the anti-inflammatory cytokine IL-10 were significantly higher in the knee tissue of mice treated with than control mice injected with MSU. In conclusion, oral BL treatment reduced the inflammatory response in an experimental murine model of gout, suggesting it may be useful as an adjuvant treatment in patients with gout.
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Affiliation(s)
- A T Vieira
- 1 Department of Microbiology, Institute of Biological Sciences, Federal University of Minas Gerais, Avenida Presidente Antônio Carlos 6627, C.P. 486, Pampulha-Campus UFMG, 31270-901, Belo Horizonte, MG, Brazil.,2 Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - I Galvão
- 2 Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - F A Amaral
- 2 Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - M M Teixeira
- 2 Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - J R Nicoli
- 1 Department of Microbiology, Institute of Biological Sciences, Federal University of Minas Gerais, Avenida Presidente Antônio Carlos 6627, C.P. 486, Pampulha-Campus UFMG, 31270-901, Belo Horizonte, MG, Brazil
| | - F S Martins
- 1 Department of Microbiology, Institute of Biological Sciences, Federal University of Minas Gerais, Avenida Presidente Antônio Carlos 6627, C.P. 486, Pampulha-Campus UFMG, 31270-901, Belo Horizonte, MG, Brazil
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17
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Tiago FCP, Porto BAA, Ribeiro NS, Moreira LMC, Arantes RME, Vieira AT, Teixeira MM, Generoso SV, Nascimento VN, Martins FS, Nicoli JR. Effect of Saccharomyces cerevisiae strain UFMG A-905 in experimental model of inflammatory bowel disease. Benef Microbes 2015; 6:807-15. [PMID: 26322540 DOI: 10.3920/bm2015.0018] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
In the present study, the protective potential of Saccharomyces cerevisiae strain UFMG A-905 was evaluated in a murine model of acute ulcerative colitis (UC). Six groups of Balb/c mice were used: not treated with yeast and not challenged with dextran sulphate sodium (DSS) (control); treated with S. cerevisiae UFMG A-905 (905); treated with the non-probiotic S. cerevisiae W303 (W303); challenged with DSS (DSS); treated with S. cerevisiae UFMG A-905 and challenged with DSS (905 + DSS); and treated with S. cerevisiae W303 and challenged with DSS (W303 + DSS). Seven days after induction of UC, mice were euthanised to remove colon for enzymatic, immunological, and histopathological analysis. In vivo intestinal permeability was also evaluated. An improvement of clinical manifestations of experimental UC was observed only in mice of the 905 + DSS group when compared to animals from DSS and W303 + DSS groups. This observation was confirmed by histological and morphometrical data and determination of myeloperoxidase and eosinophil peroxidase activities, intestinal permeability and some pro-inflammatory cytokines. S. cerevisiae UFMG A-905 showed to be a potential alternative treatment for UC when used in an experimental animal model of the disease.
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Affiliation(s)
- F C P Tiago
- 1 Department of Microbiology, Institute of Biological Sciences, Federal University of Minas Gerais, Avenida Presidente Antônio Carlos 6627, C.P. 486, Pampulha - Campus UFMG, 31270-901, Belo Horizonte, MG, Brazil
| | - B A A Porto
- 1 Department of Microbiology, Institute of Biological Sciences, Federal University of Minas Gerais, Avenida Presidente Antônio Carlos 6627, C.P. 486, Pampulha - Campus UFMG, 31270-901, Belo Horizonte, MG, Brazil
| | - N S Ribeiro
- 1 Department of Microbiology, Institute of Biological Sciences, Federal University of Minas Gerais, Avenida Presidente Antônio Carlos 6627, C.P. 486, Pampulha - Campus UFMG, 31270-901, Belo Horizonte, MG, Brazil
| | - L M C Moreira
- 1 Department of Microbiology, Institute of Biological Sciences, Federal University of Minas Gerais, Avenida Presidente Antônio Carlos 6627, C.P. 486, Pampulha - Campus UFMG, 31270-901, Belo Horizonte, MG, Brazil
| | - R M E Arantes
- 2 Department of General Pathology, Institute of Biological Sciences, Federal University of Minas Gerais, Avenida Presidente Antônio Carlos 6627, C.P. 486, Pampulha - Campus UFMG, 31270-901, Belo Horizonte, MG, Brazil
| | - A T Vieira
- 3 Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Avenida Presidente Antônio Carlos 6627, C.P. 486, Pampulha - Campus UFMG, 31270-901, Belo Horizonte, MG, Brazil
| | - M M Teixeira
- 3 Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Avenida Presidente Antônio Carlos 6627, C.P. 486, Pampulha - Campus UFMG, 31270-901, Belo Horizonte, MG, Brazil
| | - S V Generoso
- 4 School of Pharmacy, Federal University of Minas Gerais, Avenida Presidente Antônio Carlos 6627, C.P. 486, Pampulha - Campus UFMG, 31270-901, Belo Horizonte, MG, Brazil
| | - V N Nascimento
- 4 School of Pharmacy, Federal University of Minas Gerais, Avenida Presidente Antônio Carlos 6627, C.P. 486, Pampulha - Campus UFMG, 31270-901, Belo Horizonte, MG, Brazil
| | - F S Martins
- 1 Department of Microbiology, Institute of Biological Sciences, Federal University of Minas Gerais, Avenida Presidente Antônio Carlos 6627, C.P. 486, Pampulha - Campus UFMG, 31270-901, Belo Horizonte, MG, Brazil
| | - J R Nicoli
- 1 Department of Microbiology, Institute of Biological Sciences, Federal University of Minas Gerais, Avenida Presidente Antônio Carlos 6627, C.P. 486, Pampulha - Campus UFMG, 31270-901, Belo Horizonte, MG, Brazil
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18
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Martins FS, Saraiva MVA, Magalhães-Padilha DM, Almeida AP, Celestino JJH, Padilha RT, Cunha RMS, Silva JRV, Campello CC, Figueiredo JR. Presence of growth hormone receptor (GH-R) mRNA and protein in goat ovarian follicles and improvement of in vitro preantral follicle survival and development with GH. Theriogenology 2014; 82:27-35. [PMID: 24725418 DOI: 10.1016/j.theriogenology.2014.02.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2013] [Revised: 02/19/2014] [Accepted: 02/19/2014] [Indexed: 11/25/2022]
Abstract
This study aimed to demonstrate the expression of growth hormone receptor (GH-R) mRNA and protein in goat ovarian follicles in order to investigate the effects of GH on the survival and development of preantral follicles. The ovaries were processed for the isolation of follicles to study GH-R mRNA expression or to localization of GH-R by immunohistochemical analysis. Pieces of ovarian cortex were cultured for 7 days in minimum essential medium(+) (MEM(+)) in the presence or absence of GH at different concentrations (1, 10, 50, 100, and 200 ng/mL). High expression levels of GH-R mRNA were observed in granulosa/theca cells from large antral follicles. However, preantral follicles do not express mRNA for GH-R. Immunohistochemistry demonstrated that the GH-R protein was expressed in the oocytes/granulosa cells of antral follicles, but any protein expression was observed in preantral follicles. The highest (P < 0.05) rate of normal follicles and intermediate follicles was observed after 7 days in MEM(+) plus 10 ng/mL GH (70%). In conclusion, GH-R mRNA and protein are expressed in caprine antral follicles, but not in preantral follicles. Moreover, GH maintains the survival of goat preantral follicles and promotes the development of primordial follicles.
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Affiliation(s)
- F S Martins
- Laboratory of Manipulation of Oocytes Enclosed in Preantral Follicles (LAMOFOPA), Veterinary Faculty, State University of Ceará, Fortaleza, Brazil
| | - M V A Saraiva
- Laboratory of Manipulation of Oocytes Enclosed in Preantral Follicles (LAMOFOPA), Veterinary Faculty, State University of Ceará, Fortaleza, Brazil
| | | | - A P Almeida
- Laboratory of Manipulation of Oocytes Enclosed in Preantral Follicles (LAMOFOPA), Veterinary Faculty, State University of Ceará, Fortaleza, Brazil
| | - J J H Celestino
- Laboratory of Manipulation of Oocytes Enclosed in Preantral Follicles (LAMOFOPA), Veterinary Faculty, State University of Ceará, Fortaleza, Brazil
| | - R T Padilha
- Potiguar University/Laureate International Universities, Natal, Brazil
| | - R M S Cunha
- Biotechnology Nucleus of Sobral (NUBIS)-Federal University of Ceará, Sobral, Brazil
| | - J R V Silva
- Biotechnology Nucleus of Sobral (NUBIS)-Federal University of Ceará, Sobral, Brazil
| | - C C Campello
- Laboratory of Manipulation of Oocytes Enclosed in Preantral Follicles (LAMOFOPA), Veterinary Faculty, State University of Ceará, Fortaleza, Brazil
| | - J R Figueiredo
- Laboratory of Manipulation of Oocytes Enclosed in Preantral Follicles (LAMOFOPA), Veterinary Faculty, State University of Ceará, Fortaleza, Brazil
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Tiago FCP, Martins FS, Souza ELS, Pimenta PFP, Araujo HRC, Castro IM, Brandão RL, Nicoli JR. Adhesion to the yeast cell surface as a mechanism for trapping pathogenic bacteria by Saccharomyces probiotics. J Med Microbiol 2012; 61:1194-1207. [PMID: 22580913 DOI: 10.1099/jmm.0.042283-0] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Recently, much attention has been given to the use of probiotics as an adjuvant for the prevention or treatment of gastrointestinal pathology. The great advantage of therapy with probiotics is that they have few side effects such as selection of resistant bacteria or disturbance of the intestinal microbiota, which occur when antibiotics are used. Adhesion of pathogenic bacteria onto the surface of probiotics instead of onto intestinal receptors could explain part of the probiotic effect. Thus, this study evaluated the adhesion of pathogenic bacteria onto the cell wall of Saccharomyces boulardii and Saccharomyces cerevisiae strains UFMG 905, W303 and BY4741. To understand the mechanism of adhesion of pathogens to yeast, cell-wall mutants of the parental strain of Saccharomyces cerevisiae BY4741 were used because of the difficulty of mutating polyploid yeast, as is the case for Saccharomyces cerevisiae and Saccharomyces boulardii. The tests of adhesion showed that, among 11 enteropathogenic bacteria tested, only Escherichia coli, Salmonella Typhimurium and Salmonella Typhi adhered to the surface of Saccharomyces boulardii, Saccharomyces cerevisiae UFMG 905 and Saccharomyces cerevisiae BY4741. The presence of mannose, and to some extent bile salts, inhibited this adhesion, which was not dependent on yeast viability. Among 44 cell-wall mutants of Saccharomyces cerevisiae BY4741, five lost the ability to fix the bacteria. Electron microscopy showed that the phenomenon of yeast-bacteria adhesion occurred both in vitro and in vivo (in the digestive tract of dixenic mice). In conclusion, some pathogenic bacteria were captured on the surface of Saccharomyces boulardii, Saccharomyces cerevisiae UFMG 905 and Saccharomyces cerevisiae BY4741, thus preventing their adhesion to specific receptors on the intestinal epithelium and their subsequent invasion of the host.
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Affiliation(s)
- F C P Tiago
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - F S Martins
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - E L S Souza
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - P F P Pimenta
- Laboratório de Entomologia Médica, Instituto René Rachou, Fiocruz, Belo Horizonte, MG, Brazil
| | - H R C Araujo
- Laboratório de Entomologia Médica, Instituto René Rachou, Fiocruz, Belo Horizonte, MG, Brazil
| | - I M Castro
- Núcleo de Pesquisa em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
| | - R L Brandão
- Núcleo de Pesquisa em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
| | - Jacques R Nicoli
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
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20
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Rossetto R, Lima-Verde IB, Matos MHT, Saraiva MVA, Martins FS, Faustino LR, Araújo VR, Silva CMG, Name KPO, SN SNB, Campello CC, Figueiredo JR, Blume H. Interaction between ascorbic acid and follicle-stimulating hormone maintains follicular viability after long-term in vitro culture of caprine preantral follicles. Domest Anim Endocrinol 2009; 37:112-23. [PMID: 19493642 DOI: 10.1016/j.domaniend.2009.04.003] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2008] [Revised: 04/10/2009] [Accepted: 04/12/2009] [Indexed: 11/18/2022]
Abstract
This study evaluates the effects of ascorbic acid and its interaction with follicle-stimulating hormone (FSH) on the morphology, activation, and in vitro growth of caprine preantral follicles. Ovarian fragments were cultured for 1, 7, or 14 d in minimum essential medium (MEM) containing ascorbic acid (50 or 100microg/mL), FSH (50ng/mL), or both of these substances. Ovarian tissue that was either fresh (control) or cultured for 1, 7, or 14 d was processed for histological and ultrastructural evaluation. The results showed that after 14 d of culture, medium supplemented with 50microg/mL of ascorbic acid alone or combined with FSH showed higher rates of follicular survival compared with MEM. After 7 d of culture, FSH, ascorbic acid at 50microg/mL with or without FSH, and ascorbic acid at 100microg/mL increased the percentage of follicular activation compared to fresh control. In addition, FSH alone significantly increased the percentage of growing follicles after 14 d. The combination of 50microg/mL of ascorbic acid and FSH promoted a significant increase in oocyte and follicular diameter after 7 d of culture. Ultrastructural and fluorescent analysis confirmed the integrity of follicles cultured with 50microg/mL of ascorbic acid and FSH after 14 d. In conclusion, the combination of 50microg/mL of ascorbic acid and FSH maintained follicular integrity and promoted follicular activation and growth after long-term in vitro culture of caprine preantral follicles.
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Affiliation(s)
- R Rossetto
- Faculty of Veterinary Medicine, UPIS - Pioneer Union of Social Integration, DF, Brazil.
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21
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Lima-Verde IB, Matos MHT, Saraiva MVA, Bruno JB, Tenório SB, Martins FS, Rossetto R, Cunha LD, Name KPO, Báo SN, Campello CC, Figueiredo JR. Interaction between estradiol and follicle-stimulating hormone promotes in vitro survival and development of caprine preantral follicles. Cells Tissues Organs 2009; 191:240-7. [PMID: 19641292 DOI: 10.1159/000231484] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/08/2009] [Indexed: 11/19/2022] Open
Abstract
The aim of this study was to investigate the effects of estradiol and follicle-stimulating hormone (FSH) on survival and growth of caprine preantral follicles. Pieces of ovarian tissue were cultured for 1 or 7 days in minimum essential medium (MEM) containing estradiol (1, 5, 10, 20 or 40 pg/ml), FSH (50 ng/ml), or a combination of the two hormones. Cultured and noncultured control ovarian tissues were processed for histological and ultrastructural studies. The results showed that after 7 days of culture, the treatments that yielded the highest percentage of normal follicles relative to MEM alone were those that combined FSH with estradiol at 1, 5 or 20 pg/ml. The addition of FSH to 1-day cultures containing 1 pg/ml estradiol or to 7-day cultures with 1 or 5 pg/ml estradiol increased the percentage of normal follicles compared to estradiol alone at the same concentrations. After 7 days of culture, all treatments generated higher percentages of developing follicles as compared to control and MEM alone. The addition of either FSH or 10 pg/ml of estradiol to the culture media or estradiol (1, 5, 10 or 20 pg/ml) and FSH in combination significantly increased follicular diameter as compared with MEM alone following 7 days of culture. Ultrastructural studies confirmed follicular integrity after 7 days of culture in the presence of 1 pg/ml estradiol plus FSH. In conclusion, this study demonstrated that the interaction between estradiol and FSH maintains ultrastructural integrity and stimulates activation and further growth of cultured caprine preantral follicles.
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22
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Matos MHT, Lima-Verde IB, Luque MCA, Maia JE, Silva JRV, Celestino JJH, Martins FS, Báo SN, Lucci CM, Figueiredo JR. Essential role of follicle stimulating hormone in the maintenance of caprine preantral follicle viability in vitro. ZYGOTE 2008; 15:173-82. [PMID: 17462110 DOI: 10.1017/s0967199407004169] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The aims of the present study were to investigate the effects of follicle-stimulating hormone (FSH) on survival, activation and growth of caprine primordial follicles using histological and ultrastructural studies. Pieces of caprine ovarian cortex were cultured for 1 or 7 days in minimum essential medium (MEM - control medium) supplemented with different concentrations of FSH (0, 10, 50 or 100 ng/ml). Small fragments from non-cultured ovarian tissue and from those cultured for 1 or 7 days in a specific medium were processed for classical histology and transmission electron microscopy (TEM). Additionally, effects of FSH on oocyte and follicle diameter of cultured follicles were evaluated. The results showed that the lowest percentage of normal follicles was observed after 7 days of culture in control medium. After 1 day of culture, a higher percentage of growing follicles was observed in the medium supplemented with 50 ng/ml of FSH. In the presence of 10 and 50 ng/ml of FSH, an increase in diameter of both oocyte and follicle on day 7 of culture was observed. TEM showed ultrastructural integrity of follicles after 1 day of culture in MEM and after 7 days in MEM plus 50 ng/ml FSH, but did not confirm the integrity of those follicles cultured for 7 days in MEM. In conclusion, this study demonstrated that FSH at concentration of 50 ng/ml not only maintains the morphological integrity of 7 days cultured caprine preantral follicles, but also stimulate the activation of primordial follicles and the growth of activated follicles.
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Affiliation(s)
- M H T Matos
- Faculty of Veterinary Medicine, LAMOFOPA, PPGCV, State University of Ceara, Fortaleza, CE, Brazil.
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23
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Matos MHT, van den Hurk R, Lima-Verde IB, Luque MCA, Santos KDB, Martins FS, Báo SN, Lucci CM, Figueiredo JR. Effects of fibroblast growth factor-2 on the in vitro culture of caprine preantral follicles. Cells Tissues Organs 2007; 186:112-20. [PMID: 17536183 DOI: 10.1159/000103016] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2007] [Indexed: 11/19/2022] Open
Abstract
The aims of the present study were to evaluate the effects of fibroblast growth factor-2 (FGF-2) on survival, activation and growth of caprine early-staged (preantral) follicles using histological and ultrastructural studies. Fragments of caprine ovarian cortex were cultured for 1 or 5 days in an enriched minimum essential medium, supplemented or not with different concentrations of FGF-2 (10, 50 or 100 ng/ml). Fragments from non-cultured ovarian tissue (control) and from tissues cultured for 1 or 5 days in a specific medium were processed for transmission electron microscopy (TEM) or classical histology to evaluate the morphological quality of caprine preantral follicles and to calculate the percentages of normal follicles. Additionally, effects of FGF-2 on oocyte and follicle diameter of cultured preantral follicles were investigated. Our results showed that, although the percentages of histologically normal follicles were lower in cultured than in non-cultured ovarian tissue fragments, there were no differences in this regard among treatments, neither on day 1 nor on day 5 of culture. After 1 and 5 days of culture, a significantly higher percentage of growing follicles was observed in the medium supplemented with 50 ng/ml of FGF-2. This FGF-2 treatment furthermore resulted in an increase in diameter of both oocytes and follicles that were cultured for 5 days. TEM showed that the ultrastructural integrity of caprine preantral follicles was maintained during their 5-day culture in the presence of 50 ng/ml FGF-2. In conclusion, this study demonstrated that at a concentration of 50 ng/ml FGF-2 not only maintains the morphological integrity of caprine preantral follicles cultured for 5 days, but also stimulates the activation of primordial follicles and the growth of activated follicles.
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Affiliation(s)
- M H T Matos
- Faculty of Veterinary Medicine, State University of Ceara, Fortaleza, Brazil.
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24
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Matos MHT, Lima-Verde IB, Bruno JB, Lopes CAP, Martins FS, Santos KDB, Rocha RMP, Silva JRV, Báo SN, Figueiredo JR. Follicle stimulating hormone and fibroblast growth factor-2 interact and promote goat primordial follicle development in vitro. Reprod Fertil Dev 2007; 19:677-84. [PMID: 17601416 DOI: 10.1071/rd07021] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2007] [Accepted: 05/04/2007] [Indexed: 11/23/2022] Open
Abstract
The aims of the present study were to investigate the effects of the interaction between follicle stimulating hormone (FSH) and fibroblast growth factor-2 (FGF-2) on survival, follicular growth initiation and further growth of caprine preantral follicles. Pieces of caprine ovarian cortex were cultured for 1 or 7 days in minimum essential medium (MEM) supplemented with FSH, FGF-2 or FSH + FGF-2. Small fragments from non-cultured ovarian tissue and from those cultured for 1 or 7 days were processed for classical histology and transmission electron microscopy (TEM) to verify follicular morphology and growth. The results showed that, after 7 days culture, the highest percentages of normal follicles were observed in medium supplemented with FSH. After 7 days culture, the interaction between FSH and FGF-2 was most effective to promote the initiation of primordial follicles growth and oocyte growth. TEM showed ultrastructural integrity of follicles after 1 day of culture in MEM and after 7 days in all treatments, except in those follicles cultured for 7 days in MEM. In conclusion, this study demonstrated that the interaction between FSH and FGF-2 stimulates the initiation of primordial follicles growth and the subsequent growth of developing follicles. Furthermore, these data showed that FSH is important to maintain follicular integrity after 7 days culture.
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Affiliation(s)
- M H T Matos
- Faculty of Veterinary Medicine, LAMOFOPA, PPGCV, State University of Ceara, Fortaleza, CE, Brazil.
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25
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Ramos-Filho CF, Rodrigues KM, Martins FS. Leptospirosis, renal failure and raised amylase levels. Trans R Soc Trop Med Hyg 1991; 85:698-9. [PMID: 1723551 DOI: 10.1016/0035-9203(91)90404-m] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
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