Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 7 de 7
Filtrar
Mais filtros










Base de dados
Intervalo de ano de publicação
1.
Rev Assoc Med Bras (1992) ; 69(11): e20230406, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37909613

RESUMO

OBJECTIVE: A significant problem that compels clinicians in the conventional treatment of hypoparathyroidism is patients' non-adherence to treatment. This study aimed to evaluate the effects of adequate Ca intake with dietary recommendations among hypoparathyroidism patients who persistently use Ca supplementation irregularly on plasma Ca and phosphate levels. METHODS: This prospective, randomized, controlled study was conducted on patients diagnosed with chronic hypoparathyroidism who persistently interrupt Ca supplementation therapy and therefore have a hypocalcemic course. Patients with a total daily Ca intake below 800 mg were randomized. All patients were advised to keep the doses of active vitamin D and Ca supplements they were currently using. The patients in the study group (n=32) were advised to consume 1,000-1,200 mg of Ca daily, and the patients in the control group (n=35) were advised to continue their diet according to their daily habits. After 12 weeks of follow-up, the patients' laboratory values were compared between groups to assess treatment goals. RESULTS: The mean of the total Ca level was 8.56±0.36 mg/dL in the study group and was found to be significantly higher than that in the control group, which was 7.67±0.48 mg/dL (p<0.001). The mean serum phosphate and serum Ca-P product levels were significantly higher in the study group (p<0.001) but did not exceed the safe upper limits in any patient. CONCLUSION: A suitable increase in dietary Ca intake could effectively control hypocalcemia in patients with hypoparathyroidism who persistently interrupt the recommended calcium supplementation.


Assuntos
Hipocalcemia , Hipoparatireoidismo , Humanos , Cálcio da Dieta/uso terapêutico , Cálcio , Estudos Prospectivos , Hipoparatireoidismo/tratamento farmacológico , Vitamina D/uso terapêutico , Hipocalcemia/tratamento farmacológico , Fosfatos/uso terapêutico , Hormônio Paratireóideo/uso terapêutico
2.
Gene ; 836: 146680, 2022 Aug 20.
Artigo em Inglês | MEDLINE | ID: mdl-35738443

RESUMO

The elucidation of the mechanisms controlling the metastatic processes is important for the development of new treatment methods to prevent the progression of localized disease to metastasis. Forkhead box D1 (FOXD1) is a member of the FOX transcription factor family and has been reported to play an important role in the development and progression of various cancers. However, its role in prostate cancer (PCa) remains only partially understood. Therefore, we aimed to explore the effects on the associated regulatory signal pathway of FOXD1 in prostate cancer. To clarify the roles of FOXD1 in prostate cancer, we used siRNA to suppress its expression in 22Rv1 cells with relatively higher expression of FOXD1. The effects of FOXD1 silencing on cell proliferation, migration and invasion were determined. WST-1 assays were used to determine cell proliferation. Cell migration and invasion were evaluated through wound healing and transwell assays. The possible underlying mechanism of FOXD1 silencing on 22Rv1 was evaluated by determining the expression of proteins related to EMT and Wnt/ß-catenin signaling pathway. Our results showed that FOXD1 was highly expressed in prostate cancer cell lines -PC-3, DU145, LNCaP and 22Rv1- compared to normal prostate epithelial cell line RWPE-1. Additionally, silencing of FOXD1 significantly reduced proliferation, migration and invasion of 22Rv1 cells. Furthermore, silencing of FOXD1 decreased the expression of ß-catenin and cyclin D1, which are involved in the Wnt/ß-catenin signaling pathway. However, it did not appear to affect the expression of EMT-related proteins other than N-cadherin. Our results suggest that silencing of FOXD1 suppresses metastatic potentials of the PCa via N-cadherin - Wnt/ß-catenin crosstalk. Therefore, the expression status of FOXD1 may be a new prognostic factor as well as a potential therapeutic target in prostate cancer treatment.


Assuntos
Neoplasias da Próstata , beta Catenina , Caderinas/genética , Linhagem Celular Tumoral , Movimento Celular/genética , Proliferação de Células/genética , Transição Epitelial-Mesenquimal/genética , Fatores de Transcrição Forkhead/genética , Fatores de Transcrição Forkhead/metabolismo , Humanos , Masculino , Invasividade Neoplásica , Neoplasias da Próstata/patologia , Via de Sinalização Wnt/genética , beta Catenina/genética , beta Catenina/metabolismo
3.
Palliat Support Care ; 20(2): 189-195, 2022 04.
Artigo em Inglês | MEDLINE | ID: mdl-34172103

RESUMO

OBJECTIVES: Dignity therapy (DT) is a brief, individualized intervention, which provides terminally ill patients with an opportunity to convey memories, essential disclosures, and prepare a final generativity document. DT addresses psychosocial and existential issues, enhancing a sense of meaning and purpose. Several studies have considered the legacy topics most frequently discussed by patients near the end of life. To date, no Portuguese study has done that analysis. METHOD: We conducted a qualitative analysis of 17 generativity documents derived from a randomized controlled trial (RCT). Inductive content analysis was used to identify emerging themes. RESULTS: From the 39 RCT participants receiving DT, 17 gave consent for their generativity document to undergo qualitative analysis. Nine patients were female; mean age of 65 years, with a range from 46 to 79 years. Seven themes emerged: "Significant people and things"; "Remarkable moments"; "Acknowledgments"; "Reflection on the course of life"; "Personal values"; "Messages left to others"; and "Requests and last wishes". SIGNIFICANCE OF RESULTS: Generativity document analysis provides useful information for patients nearing death, including their remarkable life moments and memories, core values, concerns, and wishes for their loved ones. Being conscious of these dominant themes may allow health providers to support humanized and personalized care to vulnerable patients and their families, enhancing how professionals perceive and respond to personhood within the clinical setting.


Assuntos
Respeito , Assistência Terminal , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Cuidados Paliativos/psicologia , Pessoalidade , Portugal , Inquéritos e Questionários
4.
Int J Nurs Stud ; 108: 103584, 2020 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-32450405

RESUMO

BACKGROUND: 'Living in the moment' is an essential part of dignity-conserving practice in end-of-life care settings. Although living in the moment is important for care at the end of life, from the perspective of both the person and their family, there is no clear conceptual understanding of what it represents. OBJECTIVE: To explore the concept of 'living in the moment' in the context of dignity-conserving care at the end of life. DESIGN: A concept analysis. DATA SOURCES: The databases of Medline, CinAHL, PubMed, Web of Science, PsycINFO, SocINDEX and Cochrane were searched for studies published between 1941 and 2019, and searches of dictionaries and grey literature, as well as hand-searching were conducted, to yield qualitative, mixed methods and systematic reviews published in English, related to the term 'living in the moment'. METHOD: The methods of Walker and Avant were used to identify antecedents, attributes and consequences of the concept of 'living in the moment'. RESULTS: The literature review generated a total of 37 papers for this concept analysis. The attributes identified were (1) simple pleasure, (2) prioritising relationships, (3) living each day to the fullest, (4) maintaining normality, and (5) not worrying about the future. The antecedents were (1) awareness of dying, (2) living with life-threatening illness, (3) positive individual growth, and (4) living with an uncertain future. The consequences were (1) a good quality of life, (2) preserving dignity, and (3) coping with the uncertainty of life. CONCLUSIONS: A universal definition and conceptual model of the main concept, including theoretical relationships between its antecedents, attributes and consequences, was developed. The definition and proposed conceptual model can allow instruments to be developed that measure the effects, existence or attributes of the concept, and identify a theoretical model, and can also lead to new perspectives and strategies for implementation by nurses to improve dignified person-centred care at the end of life.


Assuntos
Adaptação Psicológica , Formação de Conceito , Acontecimentos que Mudam a Vida , Assistência Terminal/psicologia , Humanos , Qualidade de Vida/psicologia , Assistência Terminal/métodos
5.
ACS Appl Mater Interfaces ; 11(7): 6858-6866, 2019 Feb 20.
Artigo em Inglês | MEDLINE | ID: mdl-30676734

RESUMO

In this study, the ac magnetic hyperthermia responses of spinel CoFe2O4, MnFe2O4, and NiFe2O4 nanoparticles of comparable sizes (∼20 nm) were investigated to evaluate their feasibility of use in magnetic hyperthermia. The heating ability of EDT-coated nanoparticles which were dispersed in two different carrier media, deionized water and ethylene glycol, at concentrations of 1 and 2 mg/mL, was evaluated by estimating the specific loss power (SLP) (which is a measure of magnetic energy transformed into heat) under magnetic fields of 15, 25, and 50 kA/m at a constant frequency of 195 kHz. The maximum value of SLP has been found to be ∼315 W/g for CoFe2O4 and ∼295 W/g for MnFe2O4 and NiFe2O4 nanoparticles. We report very promising heating temperature rising characteristics of CoFe2O4, MnFe2O4, and NiFe2O4 nanoparticles under different applied magnetic fields that indicate the effectiveness of these nanoparticles as hyperthermia agents.


Assuntos
Cobalto/química , Compostos Férricos/química , Hipertermia Induzida/métodos , Manganês/química , Nanopartículas/química , Níquel/química , Humanos , Campos Magnéticos
6.
Bioorg Chem ; 82: 224-228, 2019 02.
Artigo em Inglês | MEDLINE | ID: mdl-30342304

RESUMO

Microbial accumulation in materials used in sectors such as medical, textile and food can lead to serious diseases, infections and uncontrollable problems. Many of the materials used in the above-mentioned industries have highly sensitive surfaces for microorganisms and cause colonization and biofilm formation. Colonization and biofilm formation threaten human health and they cause many diseases that result in death every year. Antimicrobial materials have an important role in combating pathogens. This article is about a new material with antibiofilm and antimicrobial properties combining polyurethane and Hypericum perforatum extract (PHPE) together. Antimicrobial effect of H. perforatum extract was determined against three clinical pathogens; C. albicans, E. coli and S. aureus. The highest antimicrobial activity of H. perforatum extract was found against S. aureus strain. Antibiofilm analysis results revealed that H. perforatum was also inhibited by the biofilm formation of S. aureus by 56.85%. The combination of polyurethane material and H. perforatum extract (PHPE) resulted in 92.85% decrease in S. aureus biofilm compared to control group. The reduction of S. aureus after H. perforatum incorporation was revealed by Scanning Electron Microscopy (SEM) study. The results show that the polyurethane material combined with H. perforatum extract inhibits the formation of S. aureus biofilm.


Assuntos
Antibacterianos/farmacologia , Biofilmes/efeitos dos fármacos , Hypericum/química , Extratos Vegetais/farmacologia , Poliuretanos/farmacologia , Antibacterianos/isolamento & purificação , Candida albicans/efeitos dos fármacos , Escherichia coli/efeitos dos fármacos , Testes de Sensibilidade Microbiana , Extratos Vegetais/isolamento & purificação , Staphylococcus aureus/efeitos dos fármacos , Staphylococcus aureus/fisiologia
7.
Springerplus ; 5(1): 1673, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27733975

RESUMO

PURPOSE: To study whether -160 C > A (rs16260) and -347 G > GA (rs5030625) single nucleotide polymorphisms of the regulatory region (rSNPs) of CDH1 gene modulate the risk of nephrolithiasis. METHODS: Genomic DNA of 101 patients with calcium oxalate nephrolithiasis and 114 healthy controls were screened for both polymorphisms, using polymerase chain reaction-restriction fragments length polymorphism method (PCR-RLFP). Haplotype frequencies were also analyzed. To determine the association of rSNPs of CDH1 gene with the clinicopathological features of nephrolithiasis, nearly all possible etiological factors were documented. These factors were family history, gender, age, body mass index, liquid consumption, eating habits, tea-coffee and meat (oxalate rich) consumption, adequate physical activity, and all serum and urine levels-the serum levels of Na, K, Cl, phosphate, Ca, Mg, uric acid, albumin, blood urea nitrogen (BUN), creatinine and serum parathyroid hormone (PTH) as well as 24 h urine excretions of creatinine, Na, K, Cl, phosphate, Ca, Mg, citrate, oxalate, uric acid, albumin and BUN. RESULTS: Significant differences were found between rs16260 and the risk of nephrolithiasis. Patients having CA genotype of rs16260 CDH1 polymorphism were associated with an almost trifold increased risk for developing kidney stone than those with the AA genotype (95 % CI 1.08-7.28, OR 2.8, P = 0.033). We also found that non-A allele carriers (CC) had significantly higher nephrolithiasis risk associated with the clinicopathological characteristics including serum calcium (P = 0.027) and 24 h urinary magnesium level (P = 0.042). Moreover, we did find a directly proportional relationship between the CA genotype and serum calcium levels (P = 0.041). There was no significant difference between patients and controls in terms of the distribution of rs5030625 genotypes and alleles (P > 0.05). Likewise, no associations between the rs16260 and rs5030625 haplotypes and susceptibility to kidney stone were observed (P > 0.05). CONCLUSION: Regulatory variants of rs16260 of the CDH1 gene may confer susceptibility to nephrolithiasis. This may have important implications for understanding the pathophysiological mechanisms of the disease and suggesting novel targets for drug treatment.

SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...