Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 10 de 10
Filtrar
1.
Hum Reprod ; 38(12): 2478-2488, 2023 Dec 04.
Artigo em Inglês | MEDLINE | ID: mdl-37816663

RESUMO

STUDY QUESTION: What are the knowledge, perceptions and attitudes towards fertility and elective oocyte cryopreservation (OC) for age-related fertility decline (ARFD) in women in the UK? SUMMARY ANSWER: Awareness of OC for ARFD has reportedly improved compared to studies carried out almost a decade ago, but inconsistencies in knowledge remain regarding the rate of miscarriage amongst specific age groups, the financial costs and optimal age to undergo OC for ARFD. WHAT IS KNOWN ALREADY: The age of first-time motherhood has increased amongst western societies, with many women of reproductive age underestimating the impact of age on fertility. Further understanding of women's awareness of their fertility, the options available to preserve it and the barriers for seeking treatment earlier are required in order to prevent the risk of involuntary childlessness. STUDY DESIGN, SIZE, DURATION: A hyperlink to a cross-sectional survey was posted on social media (Instagram) between 25 February 2021 and 11 March 2021. PARTICIPANTS/MATERIALS, SETTING, METHODS: Women from the general population aged 18-50 years were invited to complete the survey. MAIN RESULTS AND THE ROLE OF CHANCE: In total, 5482 women fulfilled the inclusion criteria and completed the survey. The mean age of participants was 35.0 years (SD 10.25; range 16-52). Three quarters (74.1%; n = 4055) disagreed or strongly disagreed they felt well informed regarding the options available to preserve their fertility, in case of a health-related problem or ARFD. The majority overestimated the risk of miscarriage in women aged ≥30 years old, with 14.5% correctly answering 20%, but underestimated the risks in women ≥40, as 20.1% correctly answered 40-50%. Three quarters (73.2%; n = 4007) reported an awareness of OC for ARFD and 65.8% (n = 3605) reported that they would consider undergoing the procedure. The number of women who considered OC for ARFD across age groups were as follows: 18-25 (8.3%; n = 300), 26-30 (35.8%; n = 1289), 31-35 (45.9%; n = 1654), 36-40 (9.6%; n = 347), 41-45 (0.3%; n = 13), and 46-50 (0.1%; n = 2). The majority of women (81.3%; n = 4443) underestimated the cost of a single cycle of OC for ARFD (<£5000). Furthermore, 10.4% (n = 566) believed a single cycle would be adequate enough to retrieve sufficient oocytes for cryopreservation. Approximately 11.0% (n = 599) believed OC for ARFD may pose significant health risks and affect future fertility. Less than half agreed or strongly agreed that the lack of awareness regarding OC for ARFD has impacted the likelihood of pursuing this method of fertility preservation further (41.4%; n = 2259). LIMITATIONS, REASONS FOR CAUTION: Results from cross-sectional studies are limited as interpretations made are merely associations and not of causal relationships. The online nature of participant recruitment is subject to selection bias, considering women with access to social media are often from higher socioeconomic and education backgrounds, thus limiting generalizability of the findings. WIDER IMPLICATIONS OF THE FINDINGS: Further education regarding the financial costs and optimal age to undergo elective OC to increase the chances of successful livebirth are required. Clinicians should encourage earlier fertility counselling to ensure that OC is deemed a preventative measure of ARFD, rather than an ultimate recourse to saving declining fertility. STUDY FUNDING/COMPETING INTEREST(S): No funding was required for this article. There are no conflicts of interests to declare. TRIAL REGISTRATION NUMBER: N/A.


Assuntos
Aborto Espontâneo , Preservação da Fertilidade , Gravidez , Humanos , Feminino , Adulto , Estudos Transversais , Aborto Espontâneo/epidemiologia , Conhecimentos, Atitudes e Prática em Saúde , Criopreservação , Preservação da Fertilidade/métodos , Nascido Vivo , Oócitos , Reino Unido
2.
Semin Arthritis Rheum ; 51(1): 137-143, 2021 02.
Artigo em Inglês | MEDLINE | ID: mdl-33383289

RESUMO

OBJECTIVE: To assess the efficacy and safety of the IL-1b inhibitor canakinumab in all adults with refractory Still's disease identified from the National Organization For Medicines for off-label drug use. METHODS: In a retrospective longitudinal multicenter cohort of 50 patients (median age 39 years) with active Still's disease despite treatment with corticosteroids (n = 11), conventional and synthetic (n = 34) and/or biologic disease modifying anti-rheumatic drugs (n = 30), we assessed the efficacy of canakinumab 150-300 mg administered every 4 (n = 47) or 8 weeks (n = 3) as combination therapy or monotherapy (n = 7) during a median follow-up of 27 (3-84) months. RESULTS: Α complete response was initially observed in 78% of patients within 3 months (median), irrespective of age at disease onset. A partial response was evident in 20%. One patient had resistant disease. Treatment de-escalation was attempted in 15 of 39 complete responders and a complete drug discontinuation in 21 patients for 8 months (median). Eleven patients (22%) relapsed during treatment, one during de-escalation process, and 11 after treatment discontinuation. Overall, 9 of 11 relapses were successfully treated with canakinumab treatment intensification or re-introduction. At last visit, 18% of patients were off treatment due to remission and 26% due to disease activity. Canakinumab had a significant corticosteroid sparing effect allowing weaning in 21 of 41 cases. Infections (20%, severe 4%) and leucopenia (6%) led to treatment cessation in one patient. CONCLUSION: High rates of sustained remission were observed in this, largest so far, real-life cohort of adult patients with refractory Still's disease treated with canakinumab.


Assuntos
Antirreumáticos , Produtos Biológicos , Doença de Still de Início Tardio , Adulto , Anticorpos Monoclonais Humanizados , Antirreumáticos/uso terapêutico , Produtos Biológicos/uso terapêutico , Humanos , Uso Off-Label , Estudos Retrospectivos , Doença de Still de Início Tardio/tratamento farmacológico , Resultado do Tratamento
3.
J Prev Med Hyg ; 61(2): E221-E240, 2020 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-32803009

RESUMO

AIMS: The purpose of this study was to investigate risk factors for self-perceived voice disorders in teachers in Cyprus in order to determine the necessity for a preventative vocal hygiene education program which could improve their work performance. METHODS: An online questionnaire was completed by 449 teachers. The questionnaire extracted data regarding risk factors that may contribute to the development of voice disorders, occupational consequences of voice disorders and vocal hygiene education, as well as, a self-perceived severity of a participant's voice problem. Subjects were split into two groups, teachers with Voice Disorder Index (VDI) ≤ 7 and teachers with VDI > 7. The chi-squared test was used to explore the differences in responses for each voice risk factor, occupational consequence and vocal hygiene education between the two groups. RESULTS: Teachers in the VDI > 7 group were more likely to frequently experience nasal allergies and respiratory infections, coughing, throat clearing, stress and yelling, have shorter breaks between classes, use loud voice, use their voice to discipline students, teach above students talking, etc. than teachers in the VDI ≤ 7 group. Moreover, teachers in the VDI > 7 group were more likely to limit their ability to perform certain tasks at work and reduce their activities or interactions "3-5 or more days" annually due to voice problems. CONCLUSIONS: Health, voice use, lifestyle, and environmental factors may play a part in the development of voice disorders in teachers and have an impact on their job. Therefore, a preventative vocal hygiene education program is suggested.


Assuntos
Professores Escolares , Distúrbios da Voz/etiologia , Adulto , Chipre , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Doenças Profissionais , Higiene Bucal/métodos , Fatores de Risco , Inquéritos e Questionários , Distúrbios da Voz/prevenção & controle
4.
J Laryngol Otol ; 126(12): 1204-8, 2012 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-23098060

RESUMO

OBJECTIVE: To evaluate the management of mastoid subperiosteal abscess using two different surgical approaches: simple mastoidectomy and abscess drainage. METHOD: The medical records of 34 children suffering from acute mastoiditis with subperiosteal abscess were retrospectively reviewed. In these cases, the initial surgical approach consisted of either myringotomy plus simple mastoidectomy or myringotomy plus abscess drainage. RESULTS: Thirteen children were managed with simple mastoidectomy and 21 children were initially managed with abscess drainage. Of the second group, 12 children were cured without further treatment while 9 eventually required mastoidectomy. None of the children developed complications during hospitalisation, or long-term sequelae. CONCLUSION: Simple mastoidectomy remains the most effective procedure for the management of mastoid subperiosteal abscess. Drainage of the abscess represents a simple and risk-free, but not always curative, option. It can be safely used as an initial, conservative approach in association with myringotomy and sufficient antibiotic coverage, with simple mastoidectomy reserved for non-responding cases.


Assuntos
Abscesso/cirurgia , Drenagem/métodos , Processo Mastoide/cirurgia , Mastoidite/cirurgia , Abscesso/microbiologia , Doença Aguda , Antibacterianos/uso terapêutico , Bacteroides/isolamento & purificação , Infecções por Bacteroides/tratamento farmacológico , Infecções por Bacteroides/cirurgia , Criança , Pré-Escolar , Feminino , Humanos , Lactente , Imageamento por Ressonância Magnética , Masculino , Processo Mastoide/microbiologia , Mastoidite/microbiologia , Infecções Estafilocócicas/tratamento farmacológico , Infecções Estafilocócicas/cirurgia , Staphylococcus/isolamento & purificação , Infecções Estreptocócicas/tratamento farmacológico , Infecções Estreptocócicas/cirurgia , Streptococcus pneumoniae/isolamento & purificação , Streptococcus pyogenes/isolamento & purificação
5.
Open Orthop J ; 5: 229-38, 2011.
Artigo em Inglês | MEDLINE | ID: mdl-21792381

RESUMO

Total Hip Arthroplasty aims at fully recreating a functional hip joint. Over the past years modular implant systems have become common practice and are widely used, due to the surgical options they provide. In addition Big Femoral Heads have also been implemented in the process, providing more flexibility for the surgeon. The current study aims at investigating the effects that femoral heads of bigger diameter may impose on the mechanical behavior of the bone-implant assembly. Using data acquired by Computed Tomographies and a Coordinate Measurement Machine, a cadaveric femur and a Profemur-E modular stem were fully digitized, leading to a three dimensional finite element model in ANSYS Workbench. Strains and stresses were then calculated, focusing on areas of clinical interest, based on Gruen zones: the calcar and the corresponding below the greater trochanter area in the proximal femur, the stem tip region and a profile line along linea aspera. The performed finite elements analysis revealed that the use of large diameter heads produces significant changes in strain development within the bone volume, especially in the lateral side. The application of Frost's law in bone remodeling, validated the hypothesis that for all diameters normal bone growth occurs. However, in the calcar area lower strain values were recorded, when comparing with the reference model featuring a 28mm femoral head. Along line aspera and for the stem tip area, higher values were recorded. Finally, stresses calculated on the modular neck revealed increased values, but without reaching the yield strength of the titanium alloy used.

6.
Nat Prod Lett ; 15(6): 411-8, 2001.
Artigo em Inglês | MEDLINE | ID: mdl-11838979

RESUMO

Homarine was isolated from nine edible species of marine molluscs belonging to classes Gastropoda, Bivalvia, and Cephalopoda. A thorough chromatographic, NMR and MS study provided evidence that homarine is a common and abundant metabolite of all these species. This study casts doubt on a previous assertion that 1,1'-dimethyl-[2,2']-bipyridinium is a metabolite of the Bivalve Callista chione.


Assuntos
Moluscos/química , Ácidos Picolínicos/química , Ácidos Picolínicos/síntese química , Animais , Cromatografia Líquida de Alta Pressão , Cromatografia em Camada Fina , Grécia , Espectrometria de Massas , Mar Mediterrâneo , Conformação Molecular , Estrutura Molecular , Moluscos/classificação , Ressonância Magnética Nuclear Biomolecular , Compostos de Piridínio/síntese química , Compostos de Piridínio/química , Espectrometria de Massas de Bombardeamento Rápido de Átomos , Espectrofotometria Infravermelho , Espectrofotometria Ultravioleta
7.
Genes Dev ; 14(23): 3037-50, 2000 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-11114892

RESUMO

The retinoblastoma protein, pRB, and the closely related proteins p107 and p130 are important regulators of the mammalian cell cycle. Biochemical and genetic studies have demonstrated overlapping as well as distinct functions for the three proteins in cell cycle control and mouse development. However, the role of the pRB family as a whole in the regulation of cell proliferation, cell death, or cell differentiation is not known. We generated embryonic stem (ES) cells and other cell types mutant for all three genes. Triple knock-out mouse embryonic fibroblasts (TKO MEFs) had a shorter cell cycle than wild-type, single, or double knock-out control cells. TKO cells were resistant to G(1) arrest following DNA damage, despite retaining functional p53 activity. They were also insensitive to G(1) arrest signals following contact inhibition or serum starvation. Finally, TKO MEFs did not undergo senescence in culture and do possess some characteristics of transformed cells. Our results confirm the essential role of the Rb family in the control of the G(1)/S transition, place the three Rb family members downstream of multiple cell cycle control pathways, and further the link between loss of cell cycle control and tumorigenesis.


Assuntos
Proteínas Nucleares/fisiologia , Fosfoproteínas/fisiologia , Proteínas , Proteína do Retinoblastoma/fisiologia , Animais , Ciclo Celular , Divisão Celular , Sobrevivência Celular , Transformação Celular Neoplásica , Células Cultivadas , Meios de Cultura Livres de Soro , Dano ao DNA/efeitos dos fármacos , Dano ao DNA/efeitos da radiação , Doxorrubicina/farmacologia , Fase G1 , Marcação de Genes , Genes ras , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Knockout , Proteínas Nucleares/genética , Fosfoproteínas/genética , Proteína do Retinoblastoma/genética , Proteína p107 Retinoblastoma-Like , Proteína p130 Retinoblastoma-Like
8.
Br J Urol ; 56(1): 48-9, 1984 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-6199070

RESUMO

The urine of 104 patients with bladder cancer was examined by exfoliative cytology. Three staining methods (Giemsa, Papanicolaou and Oil Red O) were used and the results compared with the histological diagnosis. Giemsa was found to be superior to the other two methods but the highest sensitivity (which was statistically significant) was obtained by a combination of the three methods.


Assuntos
Carcinoma de Células de Transição/diagnóstico , Citodiagnóstico , Neoplasias da Bexiga Urinária/diagnóstico , Compostos Azo , Corantes Azur , Carcinoma de Células de Transição/urina , Humanos , Coloração e Rotulagem , Neoplasias da Bexiga Urinária/urina
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...