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1.
Hum Reprod ; 32(3): 531-543, 2017 03 01.
Artículo en Inglés | MEDLINE | ID: mdl-28130434

RESUMEN

STUDY QUESTION: What is the impact of administration of the selective progesterone receptor modulator (SPRM), ulipristal acetate (UPA) on the endometrium of women with fibroids? SUMMARY ANSWER: UPA administration altered expression of sex-steroid receptors and progesterone-regulated genes and was associated with low levels of glandular and stromal cell proliferation. WHAT IS KNOWN ALREADY: Administration of all SPRM class members results in PAEC (progesterone receptor modulator associated endometrial changes). Data on the impact of the SPRM UPA administration on endometrial sex-steroid receptor expression, progesterone (P)-regulated genes and cell proliferation are currently lacking. STUDY DESIGN SIZE, DURATION: Observational study with histological and molecular analyses to delineate impact of treatment with UPA on endometrium. Endometrial samples (n = 9) were collected at hysterectomy from women aged 39 to 49 with uterine fibroids treated with UPA (oral 5 mg daily) for 9-12 weeks. Control proliferative (n = 9) and secretory (n = 9) endometrium from women aged 38-52 with fibroids were derived from institutional tissue archives. PARTICIPANTS/MATERIALS, SETTING, METHODS: Study setting was a University Research Institute. Endometrial biopsies were collected with institutional ethical approval and written informed consent. Concentrations of mRNAs encoded by steroid receptors, P-regulated genes and factors in decidualised endometrium were quantified with qRT-PCR. Immunohistochemistry was employed for localization of progesterone (PR, PRB), androgen (AR), estrogen (ERα) receptors and expression of FOXO1, HAND2, HOXA10, PTEN homologue. Endometrial glandular and stromal cell proliferation was objectively quantified using Ki67. MAIN RESULTS AND THE ROLE OF CHANCE: UPA induced morphological changes in endometrial tissue consistent with PAEC. A striking change in expression patterns of PR and AR was detected compared with either proliferative or secretory phase samples. There were significant changes in pattern of expression of mRNAs encoded by IGFBP-1, FOXO1, IL-15, HAND2, IHH and HOXA10 compared with secretory phase samples consistent with low agonist activity in endometrium. Expression of mRNA encoded by FOXM1, a transcription factor implicated in cell cycle progression, was low in UPA-treated samples. Cell proliferation (Ki67 positive nuclei) was lower in samples from women treated with UPA compared with those in the proliferative phase. LARGE SCALE DATA: N/A. LIMITATIONS REASONS FOR CAUTION: A small number of well-characterized patients were studied in-depth. The impacts on morphology, molecular and cellular changes with SPRM, UPA administration on symptom control remains to be determined. WIDER IMPLICATIONS OF THE FINDINGS: P plays a pivotal role in endometrial function. P-action is mediated through interaction with the PR. These data provide support for onward development of the SPRM class of compounds as effective long-term medical therapy for heavy menstrual bleeding. STUDY FUNDING/COMPETING INTEREST(S): H.O.D.C. received has clinical research support for laboratory consumables and staff from Bayer Pharma Ag and provides consultancy advice (no personal remuneration) for Bayer Pharma Ag, PregLem SA, Gedeon Richter, Vifor Pharma UK Ltd, AbbVie Inc.; A.R.W.W. has received consultancy payments from Bayer, Gedeon Richter, Preglem SA, HRA Pharma; L.H.R.W., A.A.M., R.M., G.S. and P.T.K.S. have no conflicts of interest. Study funded in part from each of: Medical Research Council (G1002033; G1100356/1; MR/N022556/1); National Health Institute for Health Research (12/206/520) and TENOVUS Scotland.


Asunto(s)
Anticonceptivos Femeninos/farmacología , Endometrio/efectos de los fármacos , Leiomioma/metabolismo , Norpregnadienos/farmacología , Receptores de Progesterona/metabolismo , Células del Estroma/efectos de los fármacos , Adulto , Factores de Transcripción con Motivo Hélice-Asa-Hélice Básico/genética , Factores de Transcripción con Motivo Hélice-Asa-Hélice Básico/metabolismo , Proliferación Celular/efectos de los fármacos , Femenino , Proteína Forkhead Box O1/genética , Proteína Forkhead Box O1/metabolismo , Proteínas Homeobox A10 , Proteínas de Homeodominio/genética , Proteínas de Homeodominio/metabolismo , Humanos , Proteína 1 de Unión a Factor de Crecimiento Similar a la Insulina/genética , Proteína 1 de Unión a Factor de Crecimiento Similar a la Insulina/metabolismo , Interleucina-15/genética , Interleucina-15/metabolismo , Persona de Mediana Edad , Receptores de Progesterona/genética , Células del Estroma/metabolismo
2.
J Sports Sci ; 35(16): 1607-1613, 2017 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-27578446

RESUMEN

To inform anti-doping policy and practice, it is important to understand the complexities of doping. The purpose of this study was to collate and systematically examine the reasoned decisions published by UK Anti-Doping for doping sanctions in rugby union in the UK since the introduction of the 2009 World Anti-Doping Code. Case files were content analysed to extract demographic information and details relating to the anti-doping rule violation (ADRV), including individuals' explanations for how/why the ADRV occurred. Between 2009 and 2015, 49 rugby union players and one coach from across the UK were sanctioned. Over 50% of the cases involved players under the age of 25, competing at sub-elite levels. Reasons in defence of the ADRV focused on functional use and lifestyle factors rather than performance enhancement. An a priori assessment of the "need", "risk" and "consequence" of using a substance was not commonplace; further strengthening calls for increasing the reach of anti-doping education. The findings also deconstruct the view that "doped" athletes are the same. Consequently, deepening understanding of the social and cultural conditions that encourage doping remains a priority.


Asunto(s)
Doping en los Deportes/legislación & jurisprudencia , Doping en los Deportes/psicología , Fútbol Americano/legislación & jurisprudencia , Fútbol Americano/psicología , Adaptación Psicológica , Adolescente , Adulto , Traumatismos en Atletas/psicología , Peso Corporal , Suplementos Dietéticos/estadística & datos numéricos , Humanos , Masculino , Persona de Mediana Edad , Acondicionamiento Físico Humano/psicología , Trastornos Relacionados con Sustancias/psicología , Reino Unido , Adulto Joven
3.
Scand J Med Sci Sports ; 24(6): e515-521, 2014 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-24673128

RESUMEN

This paper qualitatively explores national level athletes' willingness to report doping in sport. Following ethical approval, semi-structured interviews were conducted with nine national level athletes from rugby league (n = 5) and track and field athletics (n = 4). Thematic analysis established the main themes within the data. Contextual differences existed around the role that athletes perceived they would play if they became aware of doping. Specifically, track and field athletes would adopt the role of a whistle-blower and report individuals who were doping in their sport. In comparison, the rugby league players highlighted a moral dilemma. Despite disagreeing with their teammates' actions, the players would adhere to a code of silence and refrain from reporting doping. Taking these findings into account, prevention programs might focus on changing broader group and community norms around doping. In doing so, community members' receptivity to prevention messages may increase. Moreover, developing skills to intervene (e.g., speaking out against social norms that support doping behavior) or increasing awareness of reporting lines could enhance community responsibility for doping prevention. In sum, the findings highlight the need to consider the context of sport and emphasize that a one-size-fits-all approach to anti-doping is problematic.


Asunto(s)
Atletas/psicología , Doping en los Deportes/prevención & control , Fútbol Americano/psicología , Atletismo/psicología , Denuncia de Irregularidades , Adulto , Cultura , Femenino , Fútbol Americano/ética , Conocimientos, Actitudes y Práctica en Salud , Humanos , Entrevistas como Asunto , Masculino , Percepción , Investigación Cualitativa , Rol , Atletismo/ética , Reino Unido , Adulto Joven
4.
Scand J Med Sci Sports ; 24(5): e398-405, 2014 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-25371934

RESUMEN

To enable preventive measures to be designed, it is important to identify modifiable distal and proximal factors underlying doping behavior. This study investigated aspects of the prototype willingness model in relation to doping. A cross-sectional study was conducted involving 729 competitive athletes. Following ethical approval, athletes (mean age = 28.8 ± 10.1 years; 63% male) completed an online questionnaire, which assessed doping-related attitudes, norms, prototype perceptions, outcome expectancies, and behavioral willingness. Using hierarchical multiple regression analysis, 54.4% of the total variance in willingness to dope was explained. Specifically, past doping, attitudes, and favorability of performance enhancing substance user prototypes were the strongest unique predictors of willingness to dope. Athletes appeared most willing to dope if they were to suffer an injury, a dip in performance, or think others are doping and getting away with it. National-level athletes displayed significantly greater willingness to dope (Kruskal-Wallis γ2 = 35.9, P < 0.001) and perceived themselves as significantly more similar to a doper (Kruskal-Wallis γ2 = 13.4, P = 0.004) than athletes competing at any other level. The findings highlight the importance of extending anti-doping provision beyond elite-level sport and the need to target athletes' doping-related perceptions.


Asunto(s)
Atletas/psicología , Doping en los Deportes/prevención & control , Doping en los Deportes/psicología , Modelos Psicológicos , Adolescente , Adulto , Actitud , Femenino , Conocimientos, Actitudes y Práctica en Salud , Humanos , Masculino , Percepción , Sustancias para Mejorar el Rendimiento/uso terapéutico , Normas Sociales , Encuestas y Cuestionarios , Adulto Joven
5.
Scand J Med Sci Sports ; 23(2): 244-52, 2013 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-22092778

RESUMEN

Nutritional supplement (NS) use is widespread in sport. This study applied an integrated social cognitive approach to examine doping attitudes, beliefs, and self-reported doping use behavior across NS users (n = 96) and nonusers (n = 116). Following ethical approval, 212 competitive athletes (age mean = 21.4, s = 4.5; 137 males) completed self-reported measures of doping-related social cognitions and behaviors, presented in an online format where completion implied consent. Significantly more NS users (22.9%) reported doping compared with nonusers (6.0%; U = 4628.0, P < 0.05). NS users presented significantly more positive attitudes toward doping (U = 3152.0, P < 0.05) and expressed a significantly greater belief that doping is effective (U = 3152.0, P < 0.05). When presented with the scenario that performance-enhancing substances are effective and increase the possibility of winning, NS users were significantly more in favor of competing in situations that allow doping (U = 3504.5, P < 0.05). In sum, doping use is three-and-a-half times more prevalent in NS users compared with nonusers. This finding is accompanied by significant differences in doping attitudes, norms, and beliefs. Thus, this article offers support for the gateway hypothesis; athletes who engage in legal performance enhancement practices appear to embody an "at-risk" group for transition toward doping. Education should be appropriately targeted.


Asunto(s)
Atletas/psicología , Actitud , Suplementos Dietéticos , Doping en los Deportes/estadística & datos numéricos , Femenino , Humanos , Masculino , Autoinforme , Factores Sexuales , Encuestas y Cuestionarios , Adulto Joven
6.
Hum Reprod Open ; 2023(3): hoad021, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37304815

RESUMEN

STUDY QUESTION: Does application of an unbiased method for analysis of magnetic resonance (MR) images reveal any effect on uterine or fibroid volume from treatment of heavy menstrual bleeding (HMB) with three 12-week courses of the selective progesterone receptor modulator ulipristal acetate (SPRM-UPA)? SUMMARY ANSWER: Application of an unbiased method for analysis of MR images showed that treatment of HMB with SPRM-UPA was not associated with a significant reduction in the volume of the uterus or in the volume of uterine fibroids. WHAT IS KNOWN ALREADY: SPRM-UPA shows therapeutic efficacy for treating HMB. However, the mechanism of action (MoA) is not well understood and there have been mixed reports, using potentially biased methodology, regarding whether SPRM-UPA has an effect on the volume of the uterus and fibroids. STUDY DESIGN SIZE DURATION: In a prospective clinical study (with no comparator), 19 women with HMB were treated over a period of 12 months with SPRM-UPA and uterine and fibroid size were assessed with high resolution structural MRI and stereology. PARTICIPANTS/MATERIALS SETTING METHODS: A cohort of 19 women aged 38-52 years (8 with and 11 without fibroids) were treated with three 12-week courses of 5 mg SPRM-UPA given daily, with four weeks off medication in-between treatment courses. Unbiased estimates of the volume of uterus and total volume of fibroids were obtained at baseline, and after 6 and 12 months of treatment, by using the Cavalieri method of modern design-based stereology in combination with magnetic resonance imaging (MRI). MAIN RESULTS AND THE ROLE OF CHANCE: Bland-Altman plots showed good intra-rater repeatability and good inter-rater reproducibility for measurement of the volume of both fibroids and the uterus. For the total patient cohort, two-way ANOVA did not show a significant reduction in the volume of the uterus after two or three treatment courses of SPRM-UPA (P = 0.51), which was also the case when the groups of women with and without fibroids were considered separately (P = 0.63). One-way ANOVA did not show a significant reduction in total fibroid volume in the eight patients with fibroids (P = 0.17). LIMITATIONS REASONS FOR CAUTION: The study has been performed in a relatively small cohort of women and simulations that have subsequently been performed using the acquired data have shown that for three time points and a group size of up to 50, with alpha (Type I Error) and beta (Type II Error) set to 95% significance and 80% power, respectively, at least 35 patients would need to be recruited in order for the null hypothesis (that there is no significant reduction in total fibroid volume) to be potentially rejected. WIDER IMPLICATIONS OF THE FINDINGS: The imaging protocol that we have developed represents a generic paradigm for measuring the volume of the uterus and uterine fibroids that can be readily incorporated in future studies of medical treatments of HMB. In the present study, SPRM-UPA failed to produce a significant reduction in the volume of the uterus or the total volume of fibroids (which were present in approximately half of the patients) after either two or three 12-week courses of treatment. This finding represents a new insight in respect of the management of HMB using treatment strategies that target hormone-dependence. STUDY FUNDING/COMPETING INTERESTS: The UPA Versus Conventional Management of HMB (UCON) trial was funded by the EME Programme (Medical Research Council (MRC) and National Institutes of Health Research (NIHR)) (12/206/52). The views expressed in this publication are those of the authors and not necessarily those of the Medical Research Council, National Institute for Health Research, or Department of Health and Social Care.Medical Research Council (MRC) Centre grants to the Centre for Reproductive Health (CRH) (G1002033 and MR/N022556/1) are also gratefully acknowledged. H.C. has clinical research support for laboratory consumables and staff from Bayer AG and provides consultancy advice (All paid to Institution) for Bayer AG, PregLem SA, Gedeon Richter, Vifor Pharma UK Ltd, AbbVie Inc., and Myovant Sciences GmbH. H.C. has received royalties from UpToDate for an article on abnormal uterine bleeding. L.W. has received grant funding from Roche Diagnostics (Paid to Institution). All other authors have no conflicts to declare. TRIAL REGISTRATION NUMBER: The study reported here is an embedded mechanism of action study (no comparator) within the UCON clinical trial (registration ISRCTN: 20426843).

7.
J Intellect Disabil Res ; 56(11): 1065-75, 2012 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-23106750

RESUMEN

BACKGROUND: This research describes issues related to human rights as they arose within the everyday lives of people in nine personal support networks that included adult Australians with an intellectual disability (ID). METHOD: The research was part of a wider 3-year ethnographic study of nine personal support networks. A major criterion for recruitment was that people in these networks were committed to actively developing the positive, meaningful future of an adult family member with an ID. Data were collected from November 2007 to March 2011 via interviews, participant observations and analysed within the framework of situational analysis. Findings were checked with network members. RESULTS: The issue of rights was challenging to network members. Subtle rights violations could have a major impact on an individual with a disability. Network members worked to protect the rights of people with ID by building and maintaining an empathic and respectful support network, developing the person's self-confidence and autonomy and ensuring that the person with an ID was an active member of the personal support network. CONCLUSION: The maintenance of rights within a supportive environment remains a difficult task. It can be facilitated by a deep knowledge and respect for the person being supported, the promotion of his or her active participation in the planning and provision of support, and an experimental and reflective approach.


Asunto(s)
Personas con Discapacidad/psicología , Derechos Humanos/psicología , Discapacidad Intelectual/psicología , Autonomía Personal , Apoyo Social , Adulto , Antropología Cultural , Australia , Familia/psicología , Femenino , Violaciones de los Derechos Humanos/psicología , Humanos , Masculino , Personeidad , Valores Sociales , Adulto Joven
8.
Cell Rep Med ; 3(9): 100748, 2022 09 20.
Artículo en Inglés | MEDLINE | ID: mdl-36130483

RESUMEN

Endometriosis is a chronic pain condition affecting 1 in 10 women. There is an unmet need for better medical treatments for endometriosis. We spotlight trials of a single preparation combined HRT-GnRH antagonist (Relugolix) by Giudice et al.,1 for endometriosis-associated pain.


Asunto(s)
Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos , Endometriosis , Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos/tratamiento farmacológico , Endometriosis/tratamiento farmacológico , Femenino , Hormona Liberadora de Gonadotropina/uso terapéutico , Antagonistas de Hormonas/efectos adversos , Humanos , Dolor/inducido químicamente
9.
Pilot Feasibility Stud ; 7(1): 67, 2021 Mar 12.
Artículo en Inglés | MEDLINE | ID: mdl-33712086

RESUMEN

BACKGROUND: Endometriosis (where endometrial-like tissue is found outside the uterus) affects ~ 176 million women worldwide and can lead to debilitating pelvic pain. There is an unmet need for new medical treatment options for endometriosis. Pelvic peritoneal mesothelial cells of women with endometriosis exhibit detrimental metabolic reprogramming that creates an environment favouring the formation and survival of endometriosis lesions. We have generated powerful preclinical proof-of-concept data to show that it is possible to correct this metabolic phenotype using dichloroacetate (DCA), a non-hormonal compound previously used to treat rare metabolic disorders in children. We plan a single-arm, open-label, single site exploratory clinical trial to inform the design of a future randomised controlled trial (RCT) to determine the efficacy of DCA for the treatment of endometriosis-associated pain. METHODS: We will recruit 30 women with endometriosis-associated pain over a 6-month period. All participants will receive approximately 6.25 mg/kg oral DCA capsules twice daily for 6 weeks, with a dose increase to approximately 12.5 mg/kg twice daily for a further 6 weeks if their pain has not been adequately controlled on this dose regime and side-effects are acceptable. If pain is adequately controlled with minimal side-effects, the lower dose will be continued for a further 6 weeks. The primary objective is to determine whether it is possible to achieve acceptable recruitment and retention rates within the defined exclusion and inclusion criteria. Secondary objectives are to determine the acceptability of the trial to participants, including the proposed methods of recruitment, treatment, follow-up frequency and number of questionnaires. The recruitment rate will be determined by the proportion of patients recruited from the pool of eligible women. The retention rate will be determined by the proportion of participants who attended the final trial visit. DISCUSSION: This is a feasibility study to explore effectiveness and acceptability of the proposed field methodology (recruitment, retention, study processes and compliance with treatment). The results will be used to inform the design of a future RCT. TRIAL REGISTRATION: ClinicalTrials.gov, NCT04046081 Registered 6 August 2019.

10.
Mol Cell Biol ; 18(7): 4032-42, 1998 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-9632788

RESUMEN

Growth suppression by the retinoblastoma protein (RB) is dependent on its ability to form complexes with transcription regulators. At least three distinct protein-binding activities have been identified in RB: the large A/B pocket binds E2F, the A/B pocket binds the LXCXE peptide motif, and the C pocket binds the nuclear c-Abl tyrosine kinase. Substitution of Trp for Arg 661 in the B region of RB (mutant 661) inactivates both E2F and LXCXE binding. The tumor suppression function of mutant 661 is not abolished, because this allele predisposes its carriers to retinoblastoma development with a low penetrance. In cell-based assays, 661 is shown to inhibit G1/S progression. This low-penetrance mutant also induces terminal growth arrest with reduced but detectable activity. We have constructed mutations that disrupt C pocket activity. When overproduced, the RB C-terminal fragment did not induce terminal growth arrest but could inhibit G1/S progression, and this activity was abolished by the C-pocket mutations. In full-length RB, the C-pocket mutations reduced but did not abolish RB function. Interestingly, combination of the C-pocket and 661 mutations completely abolished RB's ability to cause an increase in the percentage of cells in G1 and to induce terminal growth arrest. These results suggest that the A/B or C region can induce a prolongation of G1 through mechanisms that are independent of each other. In contrast, long-term growth arrest requires combined activities from both regions of RB. In addition, E2F and LXCXE binding are not the only mechanisms through which RB inhibits cell growth. The C pocket also contributes to RB-mediated growth suppression.


Asunto(s)
Proteínas Portadoras , Proteínas de Ciclo Celular , División Celular , Proteínas de Unión al ADN , Proteína de Retinoblastoma/metabolismo , Factores de Transcripción/metabolismo , Sitios de Unión , Clonación Molecular , ADN/metabolismo , Factores de Transcripción E2F , Fase G1 , Humanos , Mutagénesis , Proteínas Proto-Oncogénicas c-abl/metabolismo , Proteínas Recombinantes de Fusión/genética , Proteínas Recombinantes de Fusión/metabolismo , Proteína de Retinoblastoma/genética , Proteína 1 de Unión a Retinoblastoma , Fase S , Factor de Transcripción DP1 , Factores de Transcripción/genética , Células Tumorales Cultivadas
11.
Oncogene ; 15(9): 1069-77, 1997 Aug 28.
Artículo en Inglés | MEDLINE | ID: mdl-9285561

RESUMEN

The Retinoblastoma tumor suppressor gene (RB1) plays a role in a variety of human cancers. Experimental analyses have indicated that the protein product of the RB1 gene (pRb) plays a role in cell cycle regulation. pRb function is dependent on its ability to bind to cellular factors, which is facilitated by multiple protein binding domains within pRb. Mutations within these domains which eliminate the ability of pRb to bind its targets result in loss of function. Although loss of pRb function may lead to uncontrolled cellular proliferation, tumorigenesis is not the only response to pRb inactivation. Examination of various tissues from RB1-nullizygous mouse embryos showed problems in differentiation and induction of apoptosis, suggesting that the ultimate response to the loss of pRb is influenced by cellular context. It has previously been demonstrated in RB1-negative Saos-2 cells that co-expression of the C-terminal domain of pRb with wildtype pRb resulted in escape from G1 arrest and continued cell cycling. In this paper we demonstrate that in RB1-positive Mv1Lu cells, expression of the A/B pocket region or the N-terminus (when combined with a nuclear localization signal), but not the C-terminal domain, is able to competitively disrupt the function of the endogenous pRb, and that the result of this disruption is apoptosis.


Asunto(s)
Apoptosis/genética , Genes de Retinoblastoma , Animales , Apoptosis/efectos de los fármacos , Unión Competitiva , Línea Celular , Células Epiteliales , Regulación Neoplásica de la Expresión Génica , Pulmón , Visón , Mutagénesis Insercional , Fenotipo , Proteína de Retinoblastoma/genética , Proteína de Retinoblastoma/farmacología , Transfección
12.
Diabetes Care ; 9(3): 255-9, 1986.
Artículo en Inglés | MEDLINE | ID: mdl-3089747

RESUMEN

Undetected gestational diabetes mellitus (GDM) is associated with a two- to fivefold increase in perinatal morbidity and mortality. Widespread screening of the obstetric population (resulting in identification and treatment) should reduce these rates. Seven hundred ninety-eight women were examined during a 13-mo period of universal glucose challenge testing (GCT). A total of 2.8% of the population had an abnormal oral glucose tolerance test (OGTT). Thirty percent of those with an abnormal OGTT were less than 25 yr old. The specificity of a 1-h GCT (50-g carbohydrate load) using a threshold of either 140 or 150 mg/dl was compared with that of a 2-h specimen using a threshold of 118 mg/dl to determine whether the cost of screening could be reduced. One- and 2-h specimens were obtained in 347 of these women. A 34% reduction in the number of follow-up OGTTs required would have been achieved if a 2-h specimen had been used as the index instead of a 1-h specimen (P less than .05). As a result, the (direct and indirect) cost per patient identified with GDM would have declined 23.5%--from $866 to $662. No comment concerning the actual false-negative rate of either the 1- or 2-h GCT can be made because only select women underwent an OGTT. To assess the validity of the 2-h threshold, an OGTT was performed in an additional 190 women if either the 1- or 2-h screen was abnormal. The results were confirmatory: the 2-h screen would have reduced the cost per case identified by 32% in this small group. Screening on the basis of past medical history clearly lacked sensitivity and cost efficacy in comparison with the GCT and should be abandoned as a practice.


Asunto(s)
Glucemia/análisis , Tamizaje Masivo/economía , Embarazo en Diabéticas/sangre , Adolescente , Adulto , Factores de Edad , Análisis Costo-Beneficio , Femenino , Prueba de Tolerancia a la Glucosa , Humanos , Embarazo , Embarazo en Diabéticas/epidemiología , Factores de Tiempo
13.
AIDS ; 8(3): 367-77, 1994 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-8031516

RESUMEN

OBJECTIVE: To describe the use of hospital-based services and associated costs over time for HIV-infected individuals by disease stage and year of treatment. METHODS: Data on service use were abstracted from inpatient and outpatient case-notes of 459 HIV-infected patients (121 asymptomatic and 338 AIDS patients) treated at St Mary's Hospital, London between 1983 and 1989. Cost estimates were derived from a survey of the 37 departments involved with HIV-related care. The number and type of admissions and outpatient visits, referral and discharge venues, number and type of tests and procedures performed, drugs prescribed and associated costs for the study period were the outcome measures used. RESULTS: Most patients were homosexual men. At the time of first HIV-related visit, 80.7% lived in London. Most day cases and planned admissions were organized through the outpatient clinic; 31% of emergency admissions were initiated by patients themselves. For people with AIDS the number of day case admissions increased while planned admissions decreased. There was a marked reduction in the duration of inpatient stays, especially for AIDS patients. Costs associated with inpatient care decreased concomitantly. The number of outpatient visits for patients with symptomatic disease increased, resulting in increased outpatient expenditure. Asymptomatic patients had fewer inpatient tests, while outpatient tests did not change over time; costs followed similar patterns. Mean inpatient and outpatient drug-days prescribed did not change nor did average inpatient drug-costs although outpatient drug-costs increased. Inpatient tests performed on symptomatic non-AIDS patients decreased, while mean outpatient tests increased; average costs followed similar patterns. Inpatient drug-days prescribed and costs remained the same, while outpatient drug-days and average drug-costs increased during the study period. For AIDS patients, the number of inpatient tests performed and their average costs decreased but outpatient tests performed increased, though their average costs remained the same. Mean inpatient drug-days prescribed and average drug-costs decreased, while number of outpatient drug-days prescribed and average drug-costs increased markedly over time. For each disease category, expenditure on admissions and related tests decreased over time, while expenditure on outpatient visits and drug-costs increased. CONCLUSIONS: The shift from an inpatient- to an outpatient-based service has resulted in fewer patients being investigated and treated in hospital and more as outpatients. This has resulted in a reduction of inpatient-related costs, while outpatient-related costs have increased. The overall contribution of drug-costs to the total cost has increased greatly over time. With the anticipated advent of new antiviral compounds, the importance of ascertaining their effectiveness as well as their efficacy will become crucial.


Asunto(s)
Síndrome de Inmunodeficiencia Adquirida/economía , Infecciones por VIH/economía , Costos de Hospital/tendencias , Hospitales Urbanos/estadística & datos numéricos , Síndrome de Inmunodeficiencia Adquirida/terapia , Adulto , Atención Ambulatoria/economía , Atención Ambulatoria/tendencias , Antivirales/economía , Femenino , Infecciones por VIH/terapia , Hospitalización/estadística & datos numéricos , Hospitalización/tendencias , Hospitales Urbanos/economía , Humanos , Londres , Masculino , Derivación y Consulta
14.
AIDS ; 8(3): 379-84, 1994 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-8031517

RESUMEN

OBJECTIVE: To describe the use of services and associated costs for HIV-infected patients by stage of infection in the context of changing patterns of presentation and survival. METHODS: A retrospective analysis of inpatient and outpatient case-notes of 335 AIDS patients and a survey of HIV-related care provided by 37 departments at St Mary's Hospital, London. Survival from time of diagnosis of AIDS, time from diagnosis of HIV infection to AIDS, and use and costs of services per patient-year were outcome measures. RESULTS: During the study period 1 January 1982 to 30 September 1989, 152 AIDS patients were diagnosed before 1987 (group 1) and 183 since 1987 (group 2), most of whom were homosexual men. The median interval of first HIV-related visit to diagnosis of AIDS increased from 0 (group 1) to 264 days (group 2; P < 0.0001). Median survival from AIDS diagnosis increased from 14.6 (group 1) to 21.0 months (group 2; P < 0.02). Group 2 patients used fewer inpatient services than group 1 patients irrespective of disease stage. Symptomatic patients in group 2 used more outpatient services than group 1 patients. Total HIV-related expenditure was lower for patients without AIDS in group 2 than in group 1, while expenditure for AIDS patients remained similar. CONCLUSION: Earlier patient presentation, a shift from inpatient- to outpatient-based clinical care and increased survival from time of AIDS diagnosis has occurred. Increased drug expenditure was offset by reduced inpatient expenditure. Total expenditure per patient-year was stable; increased survival and introduction of new drugs will increase future lifetime use of resources.


Asunto(s)
Síndrome de Inmunodeficiencia Adquirida/economía , Síndrome de Inmunodeficiencia Adquirida/mortalidad , Costos de Hospital/tendencias , Hospitales Urbanos/estadística & datos numéricos , Síndrome de Inmunodeficiencia Adquirida/terapia , Adulto , Atención Ambulatoria/economía , Atención Ambulatoria/estadística & datos numéricos , Atención Ambulatoria/tendencias , Femenino , Hospitalización/economía , Hospitalización/estadística & datos numéricos , Hospitalización/tendencias , Hospitales Urbanos/economía , Hospitales Urbanos/tendencias , Humanos , Londres/epidemiología , Masculino , Derivación y Consulta , Estudios Retrospectivos , Análisis de Supervivencia
15.
J Invest Dermatol ; 123(4): 755-9, 2004 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-15373781

RESUMEN

The inheritance of a G allele in position 61 in the 5'UTR of the epidermal growth factor (EGF) gene has been reported to increase melanoma susceptibility, a finding we have investigated in this study. The most potent phenotypic risk factor for melanoma is the atypical mole syndrome (AMS) phenotype. Our hypothesis is that the AMS is genetically determined and that nevus genes are also low penetrance melanoma susceptibility genes. We report that the G allele frequencies were the same in 697 healthy women and 380 melanoma cases (OR 0.97, 95% CI 0.8-1.2 p=0.76). We therefore found no evidence that this polymorphism is a melanoma susceptibility gene. Furthermore, we found no evidence that the polymorphism controls the nevus phenotype (nevus number, number atypical nevi or AMS phenotype). We did find some evidence that the G allele may be associated with decreased tumor Breslow thickness (OR 0.5, 95% CI 0.3-0.9) for the A/A genotype versus A/G and G/G combined in tumors of thickness >3.5 vs < or =3.5 mm and may therefore act as a predictor of survival, although this finding is not in accord with the original report. This is the second study to find no association between EGF +61 and melanoma susceptibility.


Asunto(s)
Factor de Crecimiento Epidérmico/genética , Melanoma/genética , Nevo/genética , Polimorfismo Genético , Neoplasias Cutáneas/genética , Regiones no Traducidas 5'/genética , Adulto , Estudios de Casos y Controles , Femenino , Frecuencia de los Genes , Predisposición Genética a la Enfermedad , Genotipo , Humanos , Masculino , Persona de Mediana Edad , Penetrancia
16.
Am J Med Genet ; 61(1): 75-8, 1996 Jan 02.
Artículo en Inglés | MEDLINE | ID: mdl-8741924

RESUMEN

We report on a child with frontonasal malformation (FNM) and cloacal exstrophy, a combination of findings that have not been reported previously. In FNM and cloacal exstrophy, associated malformations are rare. FNM and cloacal exstrophy both represent abnormalities of the development of the midline field; this combination of anomalies in this patient suggests an impairment of caudal and cranial midline development during blastogenesis.


Asunto(s)
Anomalías Múltiples/diagnóstico , Cloaca/anomalías , Nariz/anomalías , Cuello del Útero/anomalías , Femenino , Estudios de Seguimiento , Humanos , Recién Nacido , Imagen por Resonancia Magnética , Radiografía , Escoliosis/diagnóstico , Columna Vertebral/diagnóstico por imagen , Útero/anomalías , Vagina/anomalías
17.
Am J Med Genet ; 82(2): 170-6, 1999 Jan 15.
Artículo en Inglés | MEDLINE | ID: mdl-9934984

RESUMEN

The term Baller-Gerold syndrome was coined by Cohen [1979: Birth Defects 15(5B): 13-63] to designate the phenotype of craniosynostosis and radial aplasia. It is thought to be a rare autosomal recessive condition, which, in some patients, presents with additional abnormalities, such as polymicrogyria, mental retardation or anal atresia. A phenotypic overlap of Baller-Gerold and Roberts-SC phocomelia syndrome was noted when a patient with bicoronal synostosis and bilateral radial hypoplasia was found to have premature centromere separation, a finding characteristic of Roberts syndrome [Huson et al.,1990: J Med Genet 27:371-375]. Other cases of presumed Baller-Gerold syndrome were rediagnosed as Fanconi pancytopenia, Rothmund-Thomson syndrome or VACTERL association. These reports led to a narrowed redefinition of Baller-Gerold syndrome based on the exclusion of cytogenetic and hematopoetic abnormalities and the absence of additional malformations in patients with craniosynostosis and preaxial upper limb abnormalities. Here we report on a patient with unilateral radial aplasia and bicoronal synostosis without additional malformations and without chromosome breakage, who fits this narrow definition of Baller-Gerold syndrome. We identified a novel TWIST gene mutation in this patient, a Glu181Stop mutation predicting a premature termination of the protein carboxy-terminal to the helix 2 domain. This report provides further evidence that Baller-Gerold is of heterogeneous cause, and a thorough evaluation is indicated to identify a possibly more specific diagnosis, including Saethre-Chotzen syndrome. This differential diagnosis is of particular importance, as it is an autosomal dominant trait. Therefore, the recurrence risk for parents of an affected child can be 50% if one parent carries the mutation, as opposed to the 25% recurrence risk for autosomal recessive inheritance. Offspring of the affected patient also have a 50% risk to inherit the mutation, while the risk to bear an affected offspring for an autosomal recessive trait is very low.


Asunto(s)
Craneosinostosis/genética , Heterogeneidad Genética , Mutación , Proteínas Nucleares , Radio (Anatomía)/anomalías , Factores de Transcripción/genética , Adolescente , Adulto , Facies , Femenino , Humanos , Recién Nacido , Masculino , Síndrome , Proteína 1 Relacionada con Twist
18.
J Thorac Cardiovasc Surg ; 106(4): 592-8, 1993 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-8412251

RESUMEN

To assess the longer term outlook for patients who have undergone surgery for acquired (postinfarction) ventricular septal defect, we interviewed and studied 60 survivors from a single regional cardiac center between 3 and 144 months after the operation. Including the patients who died within 1 month of the operation, the 5-, 10-, and 14-year survivals (with standard errors) were 69% (65% to 74%), 50% (44% to 57%), and 37% (27% to 46%). Eighty-two percent of patients were in New York Heart Association class I or II. Ten patients (17%) had a persisting but not hemodynamically significant ventricular septal defect. Mean left ventricular ejection fraction was reduced at 0.39 (standard deviation 0.15), but this did not correlate with either New York Heart Association class or exercise tolerance. Twenty-eight patients (47%) had asymptomatic arrhythmias (17 with ventricular premature beats). Angina and other medical problems were not prevalent.


Asunto(s)
Defectos del Tabique Interventricular/cirugía , Anciano , Femenino , Estudios de Seguimiento , Pruebas de Función Cardíaca , Defectos del Tabique Interventricular/etiología , Defectos del Tabique Interventricular/mortalidad , Defectos del Tabique Interventricular/fisiopatología , Humanos , Masculino , Persona de Mediana Edad , Infarto del Miocardio/complicaciones , Tasa de Supervivencia , Resultado del Tratamiento
19.
Arch Ophthalmol ; 105(3): 381-5, 1987 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-3827716

RESUMEN

Strabismus, ptosis, lateral canthal dystopia, nasolacrimal obstruction, and cranial nerve palsy were noted preoperatively in 32%, 21%, 14%, 12%, and 9% of 34 patients, respectively, undergoing ophthalmologic evaluation prior to unilateral orbital advancement for plagiocephaly. Thirty-two percent of the patients had normal preoperative ocular and adnexal examination results. Ptosis, strabismus, and amblyopia were frequently acquired postoperative abnormalities in 29%, 18%, and 18% of the patients, respectively. Forty-four percent of the patients had no new abnormalities following craniofacial surgery.


Asunto(s)
Disostosis Craneofacial/cirugía , Oftalmopatías/diagnóstico , Órbita/cirugía , Complicaciones Posoperatorias/diagnóstico , Niño , Preescolar , Disostosis Craneofacial/complicaciones , Oftalmopatías/epidemiología , Oftalmopatías/etiología , Humanos , Lactante , Osteotomía , Complicaciones Posoperatorias/epidemiología , Complicaciones Posoperatorias/etiología
20.
Rheum Dis Clin North Am ; 17(4): 943-69, 1991 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-1767083

RESUMEN

In conclusion, the management of facial involvement in JRA, Romberg disease, and scleroderma is dictated by the degree of severity of the disease, age of onset, and length of activity. Functional occlusal abnormalities are best addressed through a team approach consisting of initial orthodontics followed by orthognathic surgery if needed. In all types of scleroderma, surgical facial reconstruction is best delayed until the disease is quiescent for at least a year. The ideal option for facial skeletal and soft-tissue augmentation has not yet been realized. Careful surgical planning and choice of grafts, flaps, or implants are critical to obtain the desired result.


Asunto(s)
Cara/cirugía , Enfermedades Reumáticas/cirugía , Cirugía Plástica , Artritis Juvenil/cirugía , Dentición , Asimetría Facial/etiología , Asimetría Facial/cirugía , Humanos , Radiografía , Enfermedades Reumáticas/diagnóstico por imagen , Esclerodermia Localizada/complicaciones , Esclerodermia Localizada/fisiopatología , Esclerodermia Localizada/cirugía , Esclerodermia Sistémica/complicaciones , Esclerodermia Sistémica/fisiopatología , Esclerodermia Sistémica/cirugía
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