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1.
Eur J Immunol ; 54(1): e2350633, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-37799110

RESUMO

In COVID-19, hyperinflammatory and dysregulated immune responses contribute to severity. Patients with pre-existing autoimmune conditions can therefore be at increased risk of severe COVID-19 and/or associated sequelae, yet SARS-CoV-2 infection in this group has been little studied. Here, we performed single-cell analysis of peripheral blood mononuclear cells from patients with three major autoimmune diseases (rheumatoid arthritis, psoriasis, or multiple sclerosis) during SARS-CoV-2 infection. We observed compositional differences between the autoimmune disease groups coupled with altered patterns of gene expression, transcription factor activity, and cell-cell communication that substantially shape the immune response under SARS-CoV-2 infection. While enrichment of HLA-DRlow CD14+ monocytes was observed in all three autoimmune disease groups, type-I interferon signaling as well as inflammatory T cell and monocyte responses varied widely between the three groups of patients. Our results reveal disturbed immune responses to SARS-CoV-2 in patients with pre-existing autoimmunity, highlighting important considerations for disease treatment and follow-up.


Assuntos
Doenças Autoimunes , COVID-19 , Humanos , SARS-CoV-2 , Leucócitos Mononucleares , Multiômica , Autoimunidade , Análise de Célula Única
2.
Australas J Dermatol ; 65(2): 153-162, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38058123

RESUMO

BACKGROUND: Dupilumab has shown to be an effective and safe treatment for patients with moderate-to-severe atopic dermatitis (AD). OBJECTIVE: To evaluate the predictive factors of response (PRF) in patients with moderate-to-severe AD treated with dupilumab. METHODS: Observational, retrospective and multicentre study conducted on adult patients diagnosed with moderate-to-severe AD treated with dupilumab, with a post-treatment follow-up of at least 16 weeks. The primary endpoints were EASI-75 and the IGA scale at week 52. RESULTS: A total of 198 patients were included in the analysis. Mean age was 38 ± 15.1 years and 116 (58.6%) were men. The most prevalent AD-predominant phenotypes were flexural eczema (45.3%), head-and-neck eczema (18.2%) and erythroderma (17.7%). At week 52, 140 (86.4%) patients achieved EASI-75 and 119 (93.0%) achieved an improvement in ≥2 points from baseline in IGA score. Women were 3.6 times more likely to achieve EASI-75 response than men (Odds ratio: 3.58; p = 0.020). While increased body mass index significantly reduced the probability of obtaining an improvement of ≥2 points in the IGA scale at week 52 (odds ratio: 0.88; p = 0.049). CONCLUSIONS: Dupilumab was an effective treatment in patients with moderate-to-severe AD. Additionally, sex and body mass index were significantly associated with achieving EASI-75 and an improvement of ≥2 points in the IGA scale, respectively, at week 52.


Assuntos
Anticorpos Monoclonais Humanizados , Dermatite Atópica , Eczema , Adulto , Masculino , Humanos , Feminino , Adulto Jovem , Pessoa de Meia-Idade , Dermatite Atópica/tratamento farmacológico , Dermatite Atópica/diagnóstico , Estudos Retrospectivos , Método Duplo-Cego , Índice de Gravidade de Doença , Resultado do Tratamento , Imunoglobulina A
3.
Int J Cancer ; 153(6): 1151-1161, 2023 09 15.
Artigo em Inglês | MEDLINE | ID: mdl-37260300

RESUMO

Since 2006, Chile has been implementing a gallbladder cancer (GBC) prevention program based on prophylactic cholecystectomy for gallstone patients aged 35 to 49 years. The effectiveness of this prevention program has not yet been comprehensively evaluated. We conducted a retrospective study of 473 Chilean GBC patients and 2137 population-based controls to develop and internally validate three GBC risk prediction models. The Baseline Model accounted for gallstones while adjusting for sex and birth year. Enhanced Model I also included the non-genetic risk factors: body mass index, educational level, Mapuche surnames, number of children and family history of GBC. Enhanced Model II further included Mapuche ancestry and the genotype for rs17209837. Multiple Cox regression was applied to assess the predictive performance, quantified by the area under the precision-recall curve (AUC-PRC) and the number of cholecystectomies needed (NCN) to prevent one case of GBC at age 70 years. The AUC-PRC for the Baseline Model (0.44%, 95%CI 0.42-0.46) increased by 0.22 (95%CI 0.15-0.29) when non-genetic factors were included, and by 0.25 (95%CI 0.20-0.30) when incorporating non-genetic and genetic factors. The overall NCN for Chileans with gallstones (115, 95%CI 104-131) decreased to 92 (95%CI 60-128) for Chileans with a higher risk than the median according to Enhanced Model I, and to 80 (95%CI 59-110) according to Enhanced Model II. In conclusion, age, sex and gallstones are strong risk factors for GBC, but consideration of other non-genetic factors and individual genotype data improves risk prediction and may optimize allocation of financial resources and surgical capacity.


Assuntos
Neoplasias da Vesícula Biliar , Cálculos Biliares , Idoso , Humanos , Estudos de Casos e Controles , Neoplasias da Vesícula Biliar/epidemiologia , Neoplasias da Vesícula Biliar/genética , Cálculos Biliares/epidemiologia , Cálculos Biliares/genética , Cálculos Biliares/complicações , Incidência , Estudos Retrospectivos , Fatores de Risco , Masculino , Feminino , Adulto , Pessoa de Meia-Idade
4.
Environ Res ; 238(Pt 2): 117307, 2023 12 01.
Artigo em Inglês | MEDLINE | ID: mdl-37797667

RESUMO

The Fundão Dam failure has been the most significant environmental disaster in Brazil. The catastrophe released large amounts of mining waste into the environment, including toxic metals/metalloids, which are recognized to induce carcinogenic effects. The urinary levels of 8-hydroxy-2'-deoxyguanosine (8OHdG), a widely accepted oxidative stress and carcinogenesis biomarker, provide a potential tool for assessing the disaster's health implications. This study investigated the association between urinary levels of some toxic metals/metalloids and 8OHdG in Brazilian individuals living in areas affected by the Fundão dam failure. Urinary concentrations of arsenic (As), cadmium (Cd), mercury (Hg), nickel (Ni), and lead (Pb) were determined using inductively coupled plasma mass spectrometry, while 8OHdG was analyzed by liquid chromatography-tandem mass spectrometry. Non-parametric bootstrap regression was used to estimate the associations between the urinary levels of toxic elements and 8OHdG. The results showed that except for Hg, urinary concentrations of all metals/metalloids analyzed here exceeded the reference ranges for the Brazilian population. The regression analysis revealed that As (0.337; CI 95%: 0.203; 0.474), Cd (0.268; CI 95%: 0.036; 0.520), and Ni (0.296; CI 950.108; 0.469) were positively associated with creatinine-adjusted urinary 8OHdG levels. Associations were not found for Hg (0.0122; CI 95%: -0.155; 0.183) and Pb (0.201; CI 95%: -0.040; 0.498). The current findings suggest that high exposure to toxic metals/metalloids might increase 8OHdG levels with potential adverse health effects. This study is the first one in which the relationship between toxic metals/metalloids and oxidative stress biomarkers is investigated in populations affected by environmental disasters. Further prospective studies are necessary to monitor exposure levels and explore additional health impacts.


Assuntos
Arsênio , Mercúrio , Metaloides , Metais Pesados , Humanos , Metaloides/toxicidade , Cádmio , Brasil , 8-Hidroxi-2'-Desoxiguanosina , Chumbo , Estudos Prospectivos , Níquel , Estresse Oxidativo , Metais Pesados/toxicidade , Monitoramento Ambiental/métodos
5.
Clin Exp Dermatol ; 48(9): 991-997, 2023 Aug 25.
Artigo em Inglês | MEDLINE | ID: mdl-37098171

RESUMO

BACKGROUND: Tralokinumab was recently approved for the treatment of moderate-to-severe atopic dermatitis (AD) and is the first selective interleukin (IL)-13 inhibitor that specifically neutralizes IL-13 with high affinity. OBJECTIVES: To determine the real-life short-term effectiveness and safety of tralokinumab treatment in patients with moderate-to-severe AD. METHODS: A multicentre retrospective study was conducted including adult patients with moderate-to-severe AD who started tralokinumab treatment from 1 April to 30 June 2022 in 16 Spanish hospitals. Demographic and disease characteristics, severity and quality of life scales were collected at the baseline visit and at weeks 4 and 16. RESULTS: Eighty-five patients were included. Twenty-seven patients (32%) were non-naive to advanced therapy (biological or Janus kinase inhibitors inhibitors). All included patients had severe disease with baseline Eczema Area and Severity Index (EASI) scores of 25.4 (SD 8.1), Dermatology Life Quality Index (DLQI) 15.8 (5.4) and peak pruritus numerical rating scale (PP-NRS) 8.1 (1.8) and 65% had an Investigator's Global Assessment (IGA) of 4. At week 16, there was improvement on all scales. The mean EASI decreased to 7.5 (SD 6.9, 70% improvement), SCORing Atopic Dermatitis improved 64% and PP-NRS, 57%. Also, 82%, 58% and 21% of the patients achieved EASI 50, 75 and 90, respectively. The percentage of EASI 75 responders was significantly higher among the naive vs. non-naive groups (67% vs. 41%). The safety profile was acceptable. CONCLUSIONS: Patients, with a long history of disease and prior multidrug failure, showed a good response to tralokinumab, confirming clinical trial results.


Assuntos
Dermatite Atópica , Adulto , Humanos , Dermatite Atópica/tratamento farmacológico , Qualidade de Vida , Estudos Retrospectivos , Resultado do Tratamento , Prurido/tratamento farmacológico , Índice de Gravidade de Doença , Método Duplo-Cego
6.
PLoS Genet ; 16(2): e1008576, 2020 02.
Artigo em Inglês | MEDLINE | ID: mdl-32053607

RESUMO

Although Plasmodium vivax parasites are the predominant cause of malaria outside of sub-Saharan Africa, they not always prioritised by elimination programmes. P. vivax is resilient and poses challenges through its ability to re-emerge from dormancy in the human liver. With observed growing drug-resistance and the increasing reports of life-threatening infections, new tools to inform elimination efforts are needed. In order to halt transmission, we need to better understand the dynamics of transmission, the movement of parasites, and the reservoirs of infection in order to design targeted interventions. The use of molecular genetics and epidemiology for tracking and studying malaria parasite populations has been applied successfully in P. falciparum species and here we sought to develop a molecular genetic tool for P. vivax. By assembling the largest set of P. vivax whole genome sequences (n = 433) spanning 17 countries, and applying a machine learning approach, we created a 71 SNP barcode with high predictive ability to identify geographic origin (91.4%). Further, due to the inclusion of markers for within population variability, the barcode may also distinguish local transmission networks. By using P. vivax data from a low-transmission setting in Malaysia, we demonstrate the potential ability to infer outbreak events. By characterising the barcoding SNP genotypes in P. vivax DNA sourced from UK travellers (n = 132) to ten malaria endemic countries predominantly not used in the barcode construction, we correctly predicted the geographic region of infection origin. Overall, the 71 SNP barcode outperforms previously published genotyping methods and when rolled-out within new portable platforms, is likely to be an invaluable tool for informing targeted interventions towards elimination of this resilient human malaria.


Assuntos
Surtos de Doenças/prevenção & controle , Genoma de Protozoário/genética , Técnicas de Genotipagem/métodos , Malária Vivax/transmissão , Plasmodium vivax/genética , África Oriental , Ásia , Conjuntos de Dados como Assunto , Erradicação de Doenças/métodos , Marcadores Genéticos/genética , Genótipo , Geografia , Humanos , Malária Vivax/epidemiologia , Malária Vivax/parasitologia , Metadados , Repetições de Microssatélites/genética , Plasmodium vivax/isolamento & purificação , Polimorfismo de Nucleotídeo Único/genética , Valor Preditivo dos Testes , América do Sul , Doença Relacionada a Viagens , Reino Unido , Sequenciamento Completo do Genoma
7.
J Dtsch Dermatol Ges ; 21(7): 741-748, 2023 07.
Artigo em Inglês | MEDLINE | ID: mdl-37218533

RESUMO

BACKGROUND AND OBJECTIVES: Melanoma differentiation-associated gene 5 antibody (anti-MDA5) in dermatomyositis (DM) is associated with rapidly progressive interstitial lung disease and poor prognosis. Early diagnosis is key to improving the prognosis of these patients. The aim was to confirm cutaneous characteristics in patients with anti-MDA5 dermatomyositis and to explore new diagnostic markers for the presence of anti-MDA5 (anti-MDA5+ ). PATIENTS AND METHODS: A multicenter cross-sectional retrospective cohort study of 124 patients diagnosed with DM, of which 37 were anti-MDA5+ . Demographic data, laboratory data, and clinical manifestations were collected. RESULTS: Anti-MDA5+ DM is characterized by a distinct mucocutaneous phenotype that includes oral lesions, alopecia, mechanic's hands, palmar and dorsal papules, palmar erythema, vasculopathy, and skin ulceration. We found vasculopathy and digit tip involvement very frequently in anti-MDA5+ patients (p <0.001), being a diagnostic marker of anti-MDA5+ (OR, 12.355; 95% CI 2.850-79.263; p  =  0.012 and OR, 7.447; 95% CI 2.103-46.718; p  =  0.004, respectively). The presence of ulcers deserves special mention, especially in anti-MDA5+ patients, because in our cohort, up to 97% of the anti-MDA5+ patients had ulcers. CONCLUSIONS: In patients with suspected DM with digit tip involvement or vasculopathy, the presence of anti-MDA5 antibodies must be ruled out, as it may be a clinical predictor.


Assuntos
Dermatomiosite , Humanos , Estudos Retrospectivos , Helicase IFIH1 Induzida por Interferon , Úlcera , Estudos Transversais , Autoanticorpos , Prognóstico
8.
BMC Fam Pract ; 22(1): 170, 2021 08 25.
Artigo em Inglês | MEDLINE | ID: mdl-34433429

RESUMO

BACKGROUND: In the Brazilian public health system, primary health care (PHC) is provided by the municipalities and is considered the entry level of the Unified Health System (SUS). Governmental pharmaceutical services (PharmSes) are part of the SUS, including PHC, and are the most significant way in which patients access medicine and services. Considering the diversity of the country, the municipalities have the autonomy to decide how PharmSes are implemented. Even though policies and procedures should be implemented as expected by policy makers and experts, municipality characteristics may interfere with implementation fidelity. Therefore, this study evaluated the degree to which the PharmSes in PHC were delivered as intended in Brazilian municipalities. METHODS: We analysed data from a secondary database originating from a cross-sectional nationwide study carried out by the Ministry of Health and the World Bank from 2013 to 2015. Data on 465 municipalities and the Federal District were collected from 4939 governmental PharmSes. A rating system comprising 43 indicators was developed and applied to the dataset to obtain the implementation degree (ID) of each PharmSe. Additionally, the IDs of the two PharmSes dimensions and the nine components were measured. RESULTS: Overall, the ID of the PharmSes in Brazilian PHC was evaluated as critical. The ID was critical in 81% of the municipalities (n = 369), incipient in 14% (n = 65) and unsatisfactory in 4.8% (n = 22). Regarding the PharmSes dimensions, the 'medicine management' (MM) ID was considered critical (Mean = 46%), while the 'care management' (CM) ID was incipient (Mean = 22%). In terms of the PharmSes components, the highest ID was achieved by 'forecasting' (58%). In contrast, 'continuing education and counselling' showed the lowest figure (ID = 11%) in the whole sample, followed by 'information and communication' and 'teamwork'. CONCLUSIONS: The degree to which PharmSes were implemented was critical (ID< 50%). This analysis demonstrated that PharmSes were implemented with low fidelity, which may be related to the low availability of medicine in PHC. Although the care management component requires more attention, considering their incipient ID, all components must be reviewed. Municipalities must increase their investment in PharmSes implementation in order to maximize the benefits of these services and guarantee the essential right of access to medicine.


Assuntos
Assistência Farmacêutica , Atenção Primária à Saúde , Brasil , Estudos Transversais , Humanos
9.
BMC Public Health ; 20(1): 24, 2020 Jan 08.
Artigo em Inglês | MEDLINE | ID: mdl-31914972

RESUMO

BACKGROUND: Increasing medicines availability and affordability is a key goal of Brazilian health policies. "Farmácia Popular" (FP) Program is one of the government's key strategies to achieve this goal. Under FP, antihypertension (HTN) and antiglycemic (DM) medicines have been provided at subsidized prices in private retail settings since 2006, and free of charge since 2011. We aim to assess the impact of sequential changes in FP benefits on patient affordability and government expenditures for HTN and DM treatment under the FP, and examine their implications for public financing mechanisms and program sustainability. METHODS: Longitudinal, retrospective study using interrupted time series to analyze: HTN and DM treatment coverage; total and per capita expenditure; percentage paid by MoH; and patient cost sharing. Analyzes were conducted in the dispensing database of the FP program (from 2006 to 2012). RESULTS: FP has increased its coverage over time; by December 2012 FP covered on average 13% of DM and 11.5% of HTN utilization, a growth of over 600 and 1500%, respectively. The overall cost per treatment to the MoH declined from R$36.43 (R$ = reais, the Brazilian currency) to 18.74 for HTN and from R$33.07to R$15.05 for DM over the period analyzed, representing a reduction in per capita cost greater than 50%. The amount paid by patients for the medicines covered increased over time until 2011, but then declined to zero. We estimate that to treat all patients in need for HTN and DM in 2012 under FP, the Government would need to expend 97% of the total medicines budget. CONCLUSIONS: FP rapidly increased its coverage in terms of both program reach and proportion of cost subsidized during the period analyzed. Costs of individual HTN and DM treatments in FP were reduced after 2011 for both patients (free) and government (better negotiated prices). However, overall FP expenditures by MoH increased due to markedly increased utilization. The FP is sustainable as a complementary policy but cannot feasibly substitute for the distribution of medicines by the SUS.


Assuntos
Custos e Análise de Custo/estatística & dados numéricos , Diabetes Mellitus/economia , Diabetes Mellitus/terapia , Financiamento Governamental/estatística & dados numéricos , Gastos em Saúde/estatística & dados numéricos , Hipertensão/economia , Hipertensão/terapia , Adulto , Idoso , Brasil , Custo Compartilhado de Seguro/estatística & dados numéricos , Feminino , Programas Governamentais , Humanos , Análise de Séries Temporais Interrompida , Estudos Longitudinais , Masculino , Pessoa de Meia-Idade , Avaliação de Programas e Projetos de Saúde , Estudos Retrospectivos
10.
J Dtsch Dermatol Ges ; 18(11): 1250-1259, 2020 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-33015940

RESUMO

BACKGROUND AND OBJECTIVES: Cutaneous polyarteritis nodosa (CPAN) is a comparatively rare form of vasculitis that affects small arteries and arterioles in the panniculus and dermo-subcutaneous junction. Limited information is available regarding its course in the European population. The aim of this study is to characterize the manifestations and prognostic markers of recurrence in CPAN. PATIENTS AND METHODS: We report a retrospective study of patients with clinical and histopathologic evidence of CPAN, which was treated at two tertiary referral centers in Spain between 1989 and 2019. RESULTS: 31 patients were included. The most frequent manifestation was subcutaneous nodules (90.3 %); ulcers were frequent at diagnosis (35.5 %). Two thirds of the patients had at least one extracutaneous manifestation. Seventeen patients (54.8 %) experienced relapse. The strongest predictor of recurrence was ulceration in the initial episode (OR 18.6; 95 % CI 2.73-38; p < 0.01). The pre-treatment results of laboratory parameters associated with inflammation (such as C-reactive protein and neutrophil-to-lymphocyte ratio) were significantly higher in the relapsing group. There were no disease-related deaths and none of the patients developed systemic PAN. CONCLUSIONS: Although CPAN is a vasculitis limited to the skin, symptoms may involve adjacent skeletal muscle or peripheral nerves. While the condition is not life-threatening, the presence of ulceration and elevation of certain laboratory parameters predicts a worse prognosis.


Assuntos
Poliarterite Nodosa , Humanos , Recidiva Local de Neoplasia , Prognóstico , Estudos Retrospectivos , Espanha
11.
Int J Exp Pathol ; 100(3): 192-201, 2019 06.
Artigo em Inglês | MEDLINE | ID: mdl-31131507

RESUMO

Chrysin (5,7-dihydroxyflavone) is a bioactive compound found in different fruits, vegetables, honey and propolis. This flavone has been suggested for the treatment of reproductive dysfunction, mainly because of its antioxidant and hormonal properties. However, the effects of this polyphenol on the prostate are still poorly understood. The purpose of this study was to evaluate the effects of short-term chrysin exposure on the ventral male and female prostates of adult gerbils. To evaluate the androgenic potential of chrysin, gerbils were also exposed to testosterone. Male and female gerbils were exposed to chrysin (50 mg/kg/day, orally) or testosterone cypionate (1 mg/kg/week, subcutaneously) for 3, 7 and 21 days. Prostates were dissected for morphological, stereological and immunohistochemical analyses. Serum levels of testosterone and 17ß-estradiol were measured by ELISA. Serum testosterone levels were not increased by chrysin supplementation in males or females. However, only females treated with chrysin for 21 days showed an increase in estradiol levels. Increased androgen receptor immunoreactivity, higher proliferation rates and glandular hyperplasia were observed in male and female prostates for all chrysin treatment times. Additionally, increased oestrogen receptor alpha immunoreactivity was observed in all chrysin-treated females. Although chrysin and testosterone promoted similar morphological changes in the gerbil prostate, chrysin supplementation was less deleterious to prostate health, since it resulted in lower incidence of hyperplasia and an absence of neoplastic foci.


Assuntos
Flavonoides/farmacologia , Efeitos Tardios da Exposição Pré-Natal/patologia , Próstata/efeitos dos fármacos , Receptores Androgênicos/efeitos dos fármacos , Animais , Disruptores Endócrinos/farmacologia , Feminino , Gerbillinae , Masculino , Gravidez , Testosterona/análogos & derivados , Testosterona/farmacologia , Fatores de Tempo
12.
Exp Mol Pathol ; 107: 32-42, 2019 04.
Artigo em Inglês | MEDLINE | ID: mdl-30659797

RESUMO

Normal prostate development is highly dependent of an equilibrated hormonal regulation, so that sensible interferences during this period may predispose the gland to lesions during aging. Industrial activities have increased the exposure of this gland to active elements found in environment, such as aluminum (Al). Al presents toxic effect for living beings, having the potential to disrupt the development and growth of several organs and systems. Therefore, the aim of this study was to evaluate whether the prenatal exposure to Al may alter the development and morphophysiology of the gerbil prostate (Meriones unguiculatus). Pregnant females were orally exposed to aluminum chloride (100 mg/kg/day) from 17th to 21th gestational day. Following the birth, the male and female pups were euthanized with 1 (PN1) and 90-days-old (PN90). The prostates were collected for biometrical, three-dimensional reconstruction, morphometrical, stereological, and immunohistochemical analysis. Results indicated that Al decreases the body weight of PN1 males and females, and also reduce the anogenital distance of PN1 females. Moreover, Al changed the prostate developmental patterns of PN1 animals, causing an increase in proliferative status and decreasing androgen receptor immunostaining. The results suggest that Al-promoted changes were permanent, since low androgen receptor frequency, increased serum testosterone levels and high proliferation index were observed in adult gerbils. This study demonstrated that body and prostatic changes were more pronounced in females than in males, and that Al performed as an endocrine-disrupting chemical in gerbils.


Assuntos
Cloreto de Alumínio/toxicidade , Disruptores Endócrinos/toxicidade , Efeitos Tardios da Exposição Pré-Natal/patologia , Próstata/efeitos dos fármacos , Animais , Feminino , Gerbillinae , Masculino , Gravidez
14.
Reprod Fertil Dev ; 30(10): 1286-1297, 2018 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-29622059

RESUMO

The aim of this study was to evaluate the effects of cyproterone acetate (CPA) and ethinyloestradiol (EE) alone or in combination on the female prostate of adult gerbils. Adult females were exposed for 21 days to daily oral doses of CPA (1mgkg-1), EE (10µgkg-1) or a combination of CPA and EE. Female prostatic complexes were removed, weighed and subjected to morphological, stereological, immunohistochemical and ultrastructural analyses. CPA treatment caused epithelial atrophy and decreased prostate secretory activity. The EE treatment group showed glandular hyperplasia, a high cell-proliferation index and an increase in androgen and oestrogen receptor α (AR and ERα) immunoreactivity. Combined treatment (CPA+EE) caused adverse effects, such as an increase in cell proliferation, higher AR and ERα immunoreactivity, prostatic intraepithelial neoplasia, cell degeneration and aging. In conclusion, the CPA-only treatment promoted antiandrogenic effects on the female gerbil prostate, whereas EE-only had a potent oestrogenic activity. However, when combined, EE overlapped the effects of CPA, changing the pattern of glandular hormonal regulation and stimulating the development of prostatic lesions in female gerbils.


Assuntos
Anticoncepcionais Orais Combinados/farmacologia , Receptor alfa de Estrogênio/metabolismo , Genitália Feminina/efeitos dos fármacos , Genitália Feminina/metabolismo , Gerbillinae/anatomia & histologia , Gerbillinae/metabolismo , Receptores Androgênicos/metabolismo , Estruturas Animais/anatomia & histologia , Estruturas Animais/efeitos dos fármacos , Estruturas Animais/metabolismo , Animais , Acetato de Ciproterona/farmacologia , Metilases de Modificação do DNA/metabolismo , Combinação de Medicamentos , Etinilestradiol/farmacologia , Feminino , Genitália Feminina/anatomia & histologia , Imuno-Histoquímica , Masculino , Microscopia Eletrônica de Transmissão , Antígeno Nuclear de Célula em Proliferação/metabolismo , Próstata/anatomia & histologia , Próstata/efeitos dos fármacos , Próstata/metabolismo , Regulação para Cima/efeitos dos fármacos , Uretra/anatomia & histologia , Uretra/efeitos dos fármacos , Uretra/metabolismo , Vagina/anatomia & histologia , Vagina/efeitos dos fármacos , Vagina/metabolismo
15.
Reprod Fertil Dev ; 30(9): 1180-1191, 2018 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-29510085

RESUMO

Chrysin is a bioflavonoid found in fruits, flowers, tea, honey and wine, which has antioxidant, anti-inflammatory, antiallergic and anticarcinogenic properties. This flavone has also been considered as beneficial for reproduction due its testosterone-boosting potential. Thus, the aim of this study was to evaluate the effects of chrysin on the prostate and gonads of male and female adult gerbils. In addition, a comparative analysis of the effects of testosterone on these same organs was conducted. Ninety-day-old male and female gerbils were treated with chrysin (50mgkg-1day-1) or testosterone cypionate (1mgkg-1week-1) for 21 days. The ventral male prostate and female prostate were dissected out for morphological, morphometric-stereological and ultrastructural assays. Testes and ovaries were submitted to morphological and morphometric---stereological analyses. Chrysin treatment caused epithelial hyperplasia and stromal remodelling of the ventral male and female prostate. Ultrastructurally, male and female prostatic epithelial cells in the chrysin group presented marked development of the organelles involved in the biosynthetic-secretory pathway, whereas cellular toxicity was observed only in female glands. Chrysin preserved normal testicular morphology and increased the number of growing ovarian follicles. Comparatively, testosterone treatment was detrimental to the prostate and gonads, since foci of prostatic intraepithelial neoplasia and gonadal degeneration were observed in both sexes. Thus, under the experimental conditions of this study, chrysin was better tolerated than testosterone in the prostate and gonads.


Assuntos
Anabolizantes/farmacologia , Flavonoides/farmacologia , Ovário/efeitos dos fármacos , Próstata/efeitos dos fármacos , Testículo/efeitos dos fármacos , Animais , Células Epiteliais/efeitos dos fármacos , Feminino , Gerbillinae , Hiperplasia/patologia , Masculino , Ovário/ultraestrutura , Próstata/ultraestrutura , Testículo/ultraestrutura , Testosterona/análogos & derivados , Testosterona/farmacologia
17.
Ann Hepatol ; 16(6): 893-900, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-29055917

RESUMO

INTRODUCTION AND AIM: Data on epidemiology of liver diseases in Brazil is scarce. This study aimed to estimate the burden of chronic viral hepatitis and liver cirrhosis in the country. MATERIALS AND METHODS: The indicator used was disability-adjusted life year (DALY), a sum of years of life lost due to premature mortality (YLL) and years lived with disability (YLD). Liver cirrhosis was analyzed in etiologic categories and cirrhosis of viral origin was considered part of the burden of chronic hepatitis. RESULTS: There were 57,380 DALYs (30.3 per 100,000 inhabitants) attributable to chronic hepatitis B and cirrhosis due to hepatitis B, with 41,262 DALYs in men. Most burden was caused by YLL (47,015 or 24.8/100,000) rather than YLD (10,365 or 5.5/100,000). Chronic hepatitis C and cirrhosis due to hepatitis C were responsible for 207,747 DALYs (109.6/100,000), of which 137,922 were YLL (72.7/100,000) and 69,825 (36.8/100,000) were YLD, with a higher proportion of DALYs in men (73.9%). Cirrhosis due to alcohol or other causes had a total of 536,169 DALYs (1,4% of total DALYs in Brazil), with 418,272 YLL (341,140 in men) and 117,897 YLD (97,965 in men). Highest DALYs' rates occurred at ages 60-69 in chronic hepatitis and at ages 45-59 in cirrhosis due to alcohol or other causes. CONCLUSION: Chronic viral hepatitis and liver cirrhosis are responsible for a significant burden in Brazil, affecting mainly men and individuals still in their productive years. Most burden is related to non-viral causes of cirrhosis, with a major contribution of alcohol.


Assuntos
Hepatite B Crônica/epidemiologia , Hepatite C Crônica/epidemiologia , Cirrose Hepática/epidemiologia , Adolescente , Adulto , Distribuição por Idade , Idoso , Idoso de 80 Anos ou mais , Brasil/epidemiologia , Avaliação da Deficiência , Feminino , Hepatite B Crônica/diagnóstico , Hepatite B Crônica/mortalidade , Hepatite C Crônica/diagnóstico , Hepatite C Crônica/mortalidade , Humanos , Incidência , Cirrose Hepática/diagnóstico , Cirrose Hepática/mortalidade , Cirrose Hepática Alcoólica/epidemiologia , Cirrose Hepática Alcoólica/mortalidade , Masculino , Pessoa de Meia-Idade , Prevalência , Prognóstico , Fatores de Risco , Distribuição por Sexo , Adulto Jovem
18.
Environ Toxicol ; 32(6): 1801-1812, 2017 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-28181406

RESUMO

Parabens are xenoestrogens widely employed in cosmetics, foodstuffs, and pharmaceutical products. These chemicals are known to disrupt hormone-dependent organs, due to their binding affinity for hormonal receptors. Although recent studies have evaluated the endocrine-disrupting potential of parabens in several reproductive organs, few have investigated the effects of these chemicals in the prostate. The aim of this work was to evaluate the effects of oral exposure to methylparaben (500 mg/kg/day) for 3, 7, and 21 days on male and female adult gerbil prostate. For this purpose, we employed biometrical, morphological, and immunohistochemical analyses. The results showed that methylparaben caused morphological changes in gerbil prostates in all experimental groups. These animals displayed similar alterations such as prostate epithelial hyperplasia, increased cell proliferation, and a higher frequency of AR-positive cells. However, the prostate of the female gerbil showed additional changes such as stromal inflammatory infiltration, intraepithelial neoplasia foci, and an increase in AR-positive frequency. Altogether, these data show that methylparaben was responsible for disrupting estrogenic and androgenic receptors, suggesting that parabens may have estrogenic and antiandrogenic effects in the prostate.


Assuntos
Disruptores Endócrinos/toxicidade , Gerbillinae , Músculo Liso/efeitos dos fármacos , Parabenos/toxicidade , Próstata/efeitos dos fármacos , Reprodução/efeitos dos fármacos , Administração Oral , Animais , Feminino , Masculino , Músculo Liso/metabolismo , Músculo Liso/patologia , Próstata/metabolismo , Próstata/patologia , Receptores Androgênicos/metabolismo
19.
BMC Health Serv Res ; 16(1): 532, 2016 09 30.
Artigo em Inglês | MEDLINE | ID: mdl-27716299

RESUMO

BACKGROUND: Community-based primary mental health care is recommended in low and middle-income countries. The Brazilian Health System has been restructuring primary care by expanding its Family Health Strategy. Due to mental health problems, psychosocial vulnerability and accessibility, Matrix Support teams are being set up to broaden the professional scope of primary care. This paper aims to analyse the perceptions of health professionals and managers about the integration of primary care and mental health. METHOD: In this mixed-method study 18 health managers and 24 professionals were interviewed from different primary and mental health care services in Rio de Janeiro. A semi-structured survey was conducted with 185 closed questions ranging from 1 to 5 and one open-ended question, to evaluate: access, gateway, trust, family focus, primary mental health interventions, mental health records, mental health problems, team collaboration, integration with community resources and primary mental health education. Two comparisons were made: health managers and professionals' (Mann-Whitney non-parametric test) and health managers' perceptions (Kruskall-Wallis non parametric-test) in 4 service designs (General Traditional Outpatients, Mental Health Specialised Outpatients, Psychosocial Community Centre and Family Health Strategy)(SPSS version 17.0). Qualitative data were subjected to Framework Analysis. RESULTS: Firstly, health managers and professionals' perceptions converged in all components, except the health record system. Secondly, managers' perceptions in traditional services contrasted with managers' perceptions in community-based services in components such as mental health interventions and team collaboration, and converged in gateway, trust, record system and primary mental health education. Qualitative data revealed an acceptance of mental health and primary care integration, but a lack of communication between institutions. The Mixed Method demonstrated that interviewees consider mental health and primary care integration as a requirement of the system, while their perceptions and the model of work produced by the institutional culture are inextricably linked. CONCLUSION: There is a gap between health managers' and professionals' understanding of community-based primary mental health care. The integration of different processes of work entails both rethinking workforce actions and institutional support to help make changes.


Assuntos
Atitude do Pessoal de Saúde , Serviços Comunitários de Saúde Mental/organização & administração , Prestação Integrada de Cuidados de Saúde/organização & administração , Pessoal de Saúde/psicologia , Atenção Primária à Saúde/organização & administração , Pessoal Administrativo , Brasil , Comportamento Cooperativo , Estudos Transversais , Feminino , Pessoal de Saúde/organização & administração , Humanos , Relações Interprofissionais , Masculino , Transtornos Mentais/terapia , Saúde Mental , Equipe de Assistência ao Paciente/organização & administração , Percepção , Projetos Piloto , Administração da Prática Médica
20.
Environ Toxicol ; 31(12): 1740-1750, 2016 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-26443714

RESUMO

Substances that mimic endogenous hormones may alter the cell signaling that govern prostate development and predispose it to developing lesions in adult and senile life. Bisphenol A is able to mimic estrogens, and studies have demonstrated that low levels of exposure to this compound have caused alterations during prostate development. The aim of this study was to describe the prostate development in both male and female neonatal gerbils in normal conditions and under exposure to BPA during intrauterine life, and also to analyze whether the effects of intrauterine exposure to BPA remain in adulthood. Morphological, stereological, three-dimensional reconstruction, and immunohistochemical methods were employed. The results demonstrated that in 1-day-old normal gerbils, the female paraurethral glands and the male ventral lobe are morphologically similar, although its tissue components-epithelial buds (EB), periurethral mesenchyme (PeM), paraurethral mesenchyme (PaM) or ventral mesenchymal pad (VMP), and smooth muscle (SM)-have presented different immunolabeling pattern for androgen receptor (AR), and for proliferating cell nuclear antigen (PCNA). Moreover, we observed a differential response of male and female prostate to intrauterine BPA exposure. In 1-day-old males, the intrauterine exposure to BPA caused a decrease of AR-positive cells in the PeM and SM, and a decrease of the proliferative status in the EB. In contrast, no morphological alterations were observed in ventral prostate of adult males. In 1-day-old females, BPA exposure promoted an increase of estrogen receptor alpha (ERα) positive cells in PeM and PaM, a decrease of AR-positive cells in EB and PeM, besides a reduction of cell proliferation in EB. Additionally, the adult female prostate of BPA-exposed animals presented an increase of AR- and PCNA-positive cells. These results suggest that the prostate of female gerbils were more susceptible to the intrauterine BPA effects, since they became more proliferative in adult life. © 2015 Wiley Periodicals, Inc. Environ Toxicol 31: 1740-1750, 2016.


Assuntos
Compostos Benzidrílicos/toxicidade , Disruptores Endócrinos/toxicidade , Fenóis/toxicidade , Sistema Urogenital/efeitos dos fármacos , Fatores Etários , Animais , Animais Recém-Nascidos , Proliferação de Células/efeitos dos fármacos , Epitélio/efeitos dos fármacos , Epitélio/metabolismo , Receptor alfa de Estrogênio/metabolismo , Feminino , Gerbillinae , Masculino , Exposição Materna/efeitos adversos , Mesoderma/efeitos dos fármacos , Mesoderma/metabolismo , Antígeno Nuclear de Célula em Proliferação/metabolismo , Próstata/citologia , Próstata/efeitos dos fármacos , Próstata/embriologia , Próstata/crescimento & desenvolvimento , Receptores Androgênicos/metabolismo , Fatores Sexuais , Sistema Urogenital/citologia , Sistema Urogenital/embriologia , Sistema Urogenital/crescimento & desenvolvimento
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