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1.
Int J Colorectal Dis ; 34(5): 927-931, 2019 May.
Artigo em Inglês | MEDLINE | ID: mdl-30877364

RESUMO

BACKGROUND: Medical care in rectal cancer is subject to social inequality. According to the last French guidelines, a 1-cm distal margin below the lower pole of the rectal tumor is now considered sufficient. This extends the limits of the current sphincter preservation gold standard. Like for other innovative technics, the dissemination of such technics is often subject to social and geographical inequalities. The objective was to analyze whether sphincter preservation in rectal cancer is subject to social or geographical inequality. METHODS: The odds of sphincter preservation was modeled by logistic regression among the 1453 patients in the Calvados digestive cancer registry between 1 January 1997 and 31 December 2015 by examining some of the variables that could influence it: social inequalities and geographical remoteness, sex, age, and stage. RESULTS: A total of 69.4% of the population received sphincter preservation. Patients in the more deprived quintiles had a significantly higher probability of having sphincter amputation (odds ratio (OR) = 1.469 (1.046-2.064)). This result was no longer significant after adjustment on stage and travel time. There was a dose-effect pattern of geographical remoteness on likelihood of sphincter preservation with a progressive increase in OR between patients living the nearest and the furthest from the reference center (p-trend = 0.0178). CONCLUSION: This study shows that the probability of receiving sphincter preservation is influenced by the social environment and strongly influenced by remoteness. Although management guidelines have had a huge impact on the rates of sphincter preservation, they have not reduced the influence of the social and geographical environment on sphincter preservation.


Assuntos
Amputação Cirúrgica , Canal Anal/cirurgia , Geografia , Neoplasias Retais/cirurgia , Isolamento Social , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Fatores Socioeconômicos , Fatores de Tempo , Viagem
2.
Aging Clin Exp Res ; 28(3): 505-11, 2016 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-26936371

RESUMO

BACKGROUND: Some clinical conditions, including dementia, compromise cognitive functions involved in decision-making processes, with repercussions on the ability to subscribe a will. Because of the increasing number of aged people with cognitive impairment there is an acute and growing need for decision-making capacity evidence-based assessment. AIMS: Our study investigates the relationship between writing abilities and cognitive integrity to see if it is possible to make inferences on decision-making capacity through handwriting analysis. We also investigated the relationship between signature ability and cognitive integrity. METHODS: Thirty-six participants with diagnosis of MCI and 38 participants with diagnosis of initial dementia were recruited. For each subject we collected two samples of signature-an actual and a previous one-and an extract of spontaneous writing. Furthermore, we administered a neuropsychological battery to investigate cognitive functions involved in decision-making. RESULTS: We found significant correlations between spontaneous writing indexes and neuropsychological test results. Nonetheless, the index of signature deterioration does not correlate with the level of cognitive decline. DISCUSSION: Our results suggest that a careful analysis of spontaneous writing can be useful to make inferences on decision-making capacity, whereas great caution should be taken in attributing validity to handwritten signature of subjects with MCI or dementia. CONCLUSIONS: The analysis of spontaneous writing can be a reliable aid in cases of retrospective evaluation of cognitive integrity. On the other side, the ability to sign is not an index of cognitive integrity.


Assuntos
Disfunção Cognitiva/psicologia , Tomada de Decisões , Redação , Idoso , Idoso de 80 Anos ou mais , Cognição , Feminino , Humanos , Masculino , Estudos Retrospectivos
3.
Ann Dermatol Venereol ; 138(1): 11-6, 2011 Jan.
Artigo em Francês | MEDLINE | ID: mdl-21276455

RESUMO

BACKGROUND: The incidence of skin cancer is not well established in the French West Indies, aside from old data concerning cutaneous melanoma. METHOD: A prospective study was performed over a 3-month period in late 2007 in the French West Indies. The number of new cases of histologically confirmed skin cancer was determined using a questionnaire. RESULTS: The rate of participation of dermatologists was 82 %. During the study period, 166 skin cancers were diagnosed in 134 patients (66 women and 68 men: mean age=63.3 years, SD=2.5), including 137 basal cell carcinomas, 12 melanomas, seven squamous cell carcinomas, six Bowen's disease, one B lymphoma and one Paget's disease. The raw incidence of skin cancers detected by dermatologists was calculated as 64.6 cases/100 000 inhabitants/year for basal cell carcinoma, 5.7 cases/100 000 inhabitants/year for melanoma, 3.3 cases/100 000 inhabitants/year for squamous cell carcinoma, and 2.8 cases/100 000 inhabitants/year for Bowen's disease. Seven melanomas (almost exclusively of plantar topography) and seven basal cell carcinomas were diagnosed in patients of phototype V or VI. DISCUSSION: Although lower than in metropolitan France, the number of skin cancers diagnosed by dermatologists in the French West Indies is fairly high. In addition, this study indicates the significant incidence of basal cell carcinomas and melanomas in subjects with phototype V or VI, underreported in the literature. These findings highlight the need to begin longer-term studies and to include skin carcinomas in the cancer registry of the French West Indies in order to better identify their characteristics among the Caribbean population.


Assuntos
Neoplasias Cutâneas/epidemiologia , Idoso , Dermatologia , Feminino , Guadalupe , Humanos , Incidência , Masculino , Martinica , Pessoa de Meia-Idade , Estudos Prospectivos , Neoplasias Cutâneas/diagnóstico
4.
Med Phys ; 36(11): 4897-902, 2009 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-19994498

RESUMO

PURPOSE: The purpose of this work is to assess which energy in minibeam radiation therapy provides the best compromise between the deposited dose in the tumor and the sparing of the healthy tissues. METHODS: Monte Carlo simulations (PENELOPE 2006) have been used as a method to calculate the ratio of the peak-to-valley doses (PVDR) in the healthy tissues and in the tumor for different beam energies. The maximization of the ratio of PVDR in the healthy tissues and in the tumor has been used as a criterion. RESULTS: The main result of this work is that, for the parameters being used in preclinical trials (minibeam sizes of 600 microm and 1200 microm center-to-center separation), the optimum beam energy is 375 keV. CONCLUSIONS: The conclusion is that this is the energy of minibeams that should be used in the preclinical studies.


Assuntos
Planejamento da Radioterapia Assistida por Computador/métodos , Radioterapia/métodos , Raios X , Encéfalo/fisiologia , Encéfalo/efeitos da radiação , Neoplasias Encefálicas/fisiopatologia , Neoplasias Encefálicas/radioterapia , Simulação por Computador , Cabeça/fisiologia , Cabeça/efeitos da radiação , Humanos , Modelos Biológicos , Método de Monte Carlo , Imagens de Fantasmas , Dosagem Radioterapêutica , Crânio/fisiologia , Crânio/efeitos da radiação , Software
5.
Med Phys ; 36(3): 725-33, 2009 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-19378733

RESUMO

Synchrotron radiation is an innovative tool for the treatment of brain tumors. In the stereotactic synchrotron radiation therapy (SSRT) technique a radiation dose enhancement specific to the tumor is obtained. The tumor is loaded with a high atomic number (Z) element and it is irradiated in stereotactic conditions from several entrance angles. The aim of this work was to assess dosimetric properties of the SSRT for preparing clinical trials at the European Synchrotron Radiation Facility (ESRF). To estimate the possible risks, the doses received by the tumor and healthy tissues in the future clinical conditions have been calculated by using Monte Carlo simulations (PENELOPE code). The dose enhancement factors have been determined for different iodine concentrations in the tumor, several tumor positions, tumor sizes, and different beam sizes. A scheme for the dose escalation in the various phases of the clinical trials has been proposed. The biological equivalent doses and the normalized total doses received by the skull have been calculated in order to assure that the tolerance values are not reached.


Assuntos
Neoplasias Encefálicas/radioterapia , Síncrotrons , Fenômenos Biofísicos , Ensaios Clínicos como Assunto , Humanos , Método de Monte Carlo , Imagens de Fantasmas , Dosagem Radioterapêutica , Planejamento da Radioterapia Assistida por Computador , Técnicas Estereotáxicas , Síncrotrons/estatística & dados numéricos
6.
Rev Chir Orthop Reparatrice Appar Mot ; 94(1): 87-91, 2008 Feb.
Artigo em Francês | MEDLINE | ID: mdl-18342036

RESUMO

We report the case of a 93-year-old patient with bilateral Mac Kee-Farrar hip arthroplasties implanted 34 years ago. The patient was seen in 2005 for a type B1 periprosthetic fracture on the right prosthesis implanted in 1973. There was no loosening and the fracture was treated by plate fixation. Before the fracture, the Postel-Merle d'Aubigné (PMA) score was 16 on both sides, with a Devane activity score grade 2. At last follow-up, the PMA score was 13 for both hips, with a Devane activity score grade 1. Serum cobalt level was 1.36 microg/L (normal <1 microg/L). This exceptional case is to our knowledge the longest observed with this implant without clinical or radiographic signs of loosening. The serum cobalt level, rarely assayed after more than 30 years, was within the limits accepted for a metal-on-metal hip bilateral arthroplasty. We discuss the causes of failure and success of the Mac Kee-Farrar implant as reported in the literature and remark that long survival of the metal-on-metal bearing can occasionally be observed without signs of wear. Recent works on the metal-on-metal bearing merit attention.


Assuntos
Artroplastia de Quadril/métodos , Prótese de Quadril , Idoso de 80 Anos ou mais , Feminino , Seguimentos , Humanos , Desenho de Prótese , Fatores de Tempo
7.
Sci Rep ; 8(1): 12491, 2018 08 21.
Artigo em Inglês | MEDLINE | ID: mdl-30131501

RESUMO

Since the invention of Computed Tomography (CT), many technological advances emerged to improve the image sensitivity and resolution. However, no new source types were developed for clinical use. In this study, for the first time, coherent monochromatic X-rays from a synchrotron radiation source were used to acquire 3D CTs on patients. The aim of this work was to evaluate the clinical potential of the images acquired using Synchrotron Radiation CT (SRCT). SRCTs were acquired using monochromatic X-rays tuned at 80 keV (0.350 × 0.350 × 2 mm3 voxel size). A quantitative image quality comparison study was carried out on phantoms between a state of the art clinical CT and SRCT images. Dedicated iterative algorithms were developed to optimize the image quality and further reduce the delivered dose by a factor of 12 while keeping a better image quality than the one obtained with a clinical CT scanner. We finally show in this paper the very first SRCT results of one patient who received Synchrotron Radiotherapy in an ongoing clinical trial. This demonstrates the potential of the technique in terms of image quality improvement at a reduced radiation dose for inner ear visualization.


Assuntos
Interpretação de Imagem Radiográfica Assistida por Computador/normas , Tomografia Computadorizada por Raios X/instrumentação , Algoritmos , Desenho de Equipamento , Humanos , Imagens de Fantasmas , Doses de Radiação , Interpretação de Imagem Radiográfica Assistida por Computador/instrumentação , Síncrotrons
8.
J Acoust Soc Am ; 122(6): 3211-9, 2007 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-18247733

RESUMO

The assessment of viscoelastic properties of soft tissues is enjoying a growing interest in the field of medical imaging as pathologies are often correlated with a local change of stiffness. To date, advanced techniques in that field have been concentrating on the estimation of the second order elastic modulus (mu). In this paper, the nonlinear behavior of quasi-incompressible soft solids is investigated using the supersonic shear imaging technique based on the remote generation of polarized plane shear waves in tissues induced by the acoustic radiation force. Applying a theoretical approach of the strain energy in soft solid [Hamilton et al., J. Acoust. Soc. Am. 116, 41-44 (2004)], it is shown that the well-known acoustoelasticity experiment allowing the recovery of higher order elastic moduli can be greatly simplified. Experimentally, it requires measurements of the local speed of polarized plane shear waves in a statically and uniaxially stressed isotropic medium. These shear wave speed estimates are obtained by imaging the shear wave propagation in soft media with an ultrafast echographic scanner. In this situation, the uniaxial static stress induces anisotropy due to the nonlinear effects and results in a change of shear wave speed. Then the third order elastic modulus (A) is measured in agar-gelatin-based phantoms and polyvinyl alcohol based phantoms.


Assuntos
Modelos Teóricos , Dinâmica não Linear , Ultrassom , Ágar/química , Animais , Anisotropia , Tecido Conjuntivo/diagnóstico por imagem , Elasticidade , Gelatina/química , Humanos , Movimento (Física) , Imagens de Fantasmas , Álcool de Polivinil/química , Reprodutibilidade dos Testes , Resistência ao Cisalhamento , Estresse Mecânico , Resistência à Tração , Ultrassonografia , Viscosidade
9.
Eur J Surg Oncol ; 31(7): 715-20, 2005 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-16005176

RESUMO

AIMS: To determine the axillary recurrence rate in breast cancer patients with negative sentinel lymph nodes (SLN) who did not undergo further axillary lymph node dissection (ALND), and to establish whether this conservative axillary approach leads to an increased recourse to diagnostic axillary biopsy during the follow-up period because of the clinical suspicion of nodal recurrence. METHODS: In 479 patients, operated on for early breast cancer between 1998 and 2002 in five institutions, SLN biopsy was negative and no further axillary surgery was performed. SLN was localized using subdermal injection with 30-50 MBq of 99m-Tc-colloidal albumin. Follow-up controls were performed at 6-monthly intervals. RESULTS: The mean number of SLNs removed was 1.4 per patient. Most patients (90.6%) were given adjuvant systemic therapy, based on the primary tumour characteristics. At a median follow-up of 35.8 months, no clinical axillary recurrence was found. No patient underwent surgical axillary biopsy for suspicious clinical or ultrasonographic findings. CONCLUSIONS: Our results confirm that SLN biopsy without ALND in SLN-negative patients with early breast cancer is not followed by clinically evident axillary recurrence in the short-term.


Assuntos
Neoplasias da Mama/patologia , Recidiva Local de Neoplasia , Biópsia de Linfonodo Sentinela , Adulto , Idoso , Idoso de 80 Anos ou mais , Axila , Estudos de Casos e Controles , Feminino , Seguimentos , Humanos , Excisão de Linfonodo , Pessoa de Meia-Idade , Prognóstico
10.
Hum Gene Ther ; 6(10): 1275-83, 1995 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-8590731

RESUMO

Cystic fibrosis is caused by defects in a chloride-transporting protein termed cystic fibrosis transmembrane conductance regulator (CFTR). This study presents an innovative procedure to evaluate expression of functional CFTR. The technique uses the potential-sensitive probe bis-(1,3-diethylthiobarbituric acid) trimethine oxonol or DiSBAC2(3), by single-cell fluorescence imaging. The DiSBAC2(3) method was first validated on the mouse mammary tumor cell line C127, stably expressing wild-type CFTR. Activation of protein kinase A by the cAMP-permeable analogue 8-Br-cAMP induced cell membrane depolarization consistent with expression of wild-type CFTR. The DiSBAC2(3) method is quick, simple, and reproducible, and does not require invasive cell loading procedures. The system was then applied to the cell model of the human lung tumor cell line A549, in which exogenous CFTR was expressed by infecting with the replication-deficient recombinant adenovirus AdCFTR. DiSBAC2(3) was able to detect the fraction of cells in which the expression of CFTR protein was confirmed by immunocytochemistry. The DiSBAC2(3) probe was also used in human nasal respiratory cells cultured in vitro, in which it efficiently discriminated between endogenous CFTR in normal and CF cells. Functional evaluation of CFTR function by the described method can be a useful tool to detect the expression of the CF gene transferred by adenoviral vectors for use in gene therapy trials.


Assuntos
Regulador de Condutância Transmembrana em Fibrose Cística/análise , Microscopia de Fluorescência/métodos , Adenoviridae/genética , Animais , Proteínas Quinases Dependentes de AMP Cíclico , Regulador de Condutância Transmembrana em Fibrose Cística/genética , Regulador de Condutância Transmembrana em Fibrose Cística/metabolismo , Ativação Enzimática , Corantes Fluorescentes , Técnicas de Transferência de Genes , Humanos , Processamento de Imagem Assistida por Computador , Imuno-Histoquímica , Neoplasias Pulmonares/química , Neoplasias Pulmonares/metabolismo , Neoplasias Pulmonares/patologia , Neoplasias Mamárias Animais/química , Neoplasias Mamárias Animais/metabolismo , Neoplasias Mamárias Animais/patologia , Potenciais da Membrana , Camundongos , Mutação , Pólipos Nasais/química , Pólipos Nasais/metabolismo , Pólipos Nasais/patologia , Fatores de Tempo , Células Tumorais Cultivadas
11.
J Clin Endocrinol Metab ; 89(12): 6297-304, 2004 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-15579793

RESUMO

In a double-blind, placebo-controlled, randomized study, 55 anovulatory subjects received a single s.c. injection of placebo (n = 10) or recombinant long-acting FSH [FSH-carboxy terminal peptide (CTP), ORG 36286, corifollitropin alfa; NV Organon, The Netherlands] in doses of 7.5 (n = 13), 15 (n = 10), 30 (n = 11), or 60 microg (n = 11). The injection was given 2 or 3 d after the onset of a spontaneous or progestagen-induced withdrawal bleed. After drug administration, the induced follicular response varied widely among subjects in each dose group. The percentage of subjects with a follicular response (at least one follicle > or = 10.0 mm) increased with the dose (P < 0.01) and was 10, 31, 70, 73, and 82% in the placebo and 7.5-, 15-, 30-, and 60-microg treatment groups, respectively. In responding subjects, the average maximum number of follicles was 4.0, 7.6, 13.4, and 20.0, respectively, which was reached at 6.5, 6.9, 6.6, and 8.2 d after a single dose of 7.5, 15, 30, and 60 microg FSH-CTP, respectively. The dose-response for the number of follicles was statistically significant within the dose range tested (P < 0.01). Peak serum inhibin-B levels were significantly correlated with serum estradiol (E2) levels (r = 0.84, P < 0.01), and peak concentrations of inhibin-B and E2 correlated with the number of follicles observed at the same time point (for both hormones; r = 0.47, P < 0.01). Overall per treatment group, serum E2 and inhibin B concentrations significantly increased only in the two highest FSH-CTP dose groups, reaching peak concentrations at d 3 in the 30-microg group and at d 5 in the 60-microg group. Thereafter these hormone values declined rapidly, returning to baseline within 1 wk after FSH-CTP administration. In total, nine of the 55 treated subjects (16.4%) ovulated after drug administration: one subject in the placebo group, two subjects in the 7.5-microg group, three subjects in the 15-microg group, two in the 30-microg group, and one in the 60-microg group. Three subjects had monofollicular ovulation after placebo (n = 1) and a single dose of 15 microg FSH-CTP (n = 2). In two subjects with too many preovulatory follicles, (multiple) ovulation was prevented by GnRH antagonist administration. Thus, a single low dose of long-acting FSH-CTP was able to induce one or more follicles to grow up to ovulatory sizes, but the anovulatory status was not reversed because the incidence of subsequent (mono)ovulations was low.


Assuntos
Anovulação/complicações , Anovulação/tratamento farmacológico , Hormônio Foliculoestimulante Humano/administração & dosagem , Infertilidade Feminina/etiologia , Adulto , Anovulação/classificação , Anovulação/fisiopatologia , Relação Dose-Resposta a Droga , Método Duplo-Cego , Estradiol/sangue , Feminino , Hormônio Foliculoestimulante/sangue , Hormônio Foliculoestimulante Humano/efeitos adversos , Hormônio Foliculoestimulante Humano/sangue , Hormônio Foliculoestimulante Humano/uso terapêutico , Humanos , Injeções Subcutâneas , Hormônio Luteinizante/sangue , Folículo Ovariano/efeitos dos fármacos , Folículo Ovariano/fisiopatologia , Ovulação , Organização Mundial da Saúde
12.
Radiat Res ; 158(6): 763-70, 2002 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-12452779

RESUMO

In this paper we describe the results of experiments using synchrotron radiation to trigger the Auger effect in living human cancer cells treated with a widely used chemotherapy drug: cis-diamminedichloroplatinum (II) (cisplatin). The experiments were carried out at the ID17 beamline of the European Synchrotron Radiation Facility, which produces a high-fluence monochromatic beam that is adjustable from 20 to 80 keV. Cisplatin was chosen as the carrier of platinum atoms in the cells because of its alkylating-like activity and the irradiation was done with monochromatic beams above and below the platinum K-shell edge (78.39 keV). Cell survival curves were comparable with those obtained for the same cells under conventional irradiation conditions. At a low dose of cisplatin (0.1 microM, 48 h), no difference was seen in survival when the cells were irradiated above and below the K-shell edge of platinum. Higher cisplatin concentrations were investigated to enhance the cellular platinum content. The results with 1 microM cisplatin for 12 h showed no difference when the cells were irradiated with beams above or below the platinum K-shell edge with the exception of the higher cell death resulting from drug toxicity. The intracellular content of platinum was significant, as measured macroscopically by inductively coupled plasma mass spectrometry. Its subcellular localization and particularly its presence in the cell nucleus were verified by microscopic synchrotron X-ray fluorescence. This was the first known attempt at K-shell edge photon activation of stable platinum in living cells with a platinum complex used for chemotherapy. Its evident toxicity in these cells leads us to put forth the hypothesis that cisplatin toxicity can mask the enhancement of cell death induced by the irradiation above the K-shell edge. However, K-shell edge photon activation of stable elements provides a powerful technique for the understanding of the biological effects of Auger processes. Further avenues of development are discussed.


Assuntos
Morte Celular , Sobrevivência Celular/efeitos dos fármacos , Sobrevivência Celular/efeitos da radiação , Cisplatino/farmacologia , Aceleradores de Partículas/instrumentação , Platina/farmacologia , Radiossensibilizantes/farmacologia , Raios X , Calibragem , Ciclo Celular , Linhagem Celular , Ensaio de Unidades Formadoras de Colônias , Relação Dose-Resposta à Radiação , Citometria de Fluxo , Neoplasias de Cabeça e Pescoço/radioterapia , Humanos , Fótons , Células Tumorais Cultivadas
13.
Obstet Gynecol ; 73(1): 97-102, 1989 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-2909047

RESUMO

To clarify the role of disseminated intravascular coagulation (DIC) in women with the hemolysis, elevated liver enzymes, and low platelets (HELLP) syndrome, serial coagulation studies were performed prospectively in 18 patients. A semiquantitative DIC scoring system was used retrospectively to augment the diagnostic confidence of coagulopathy. At the time of admission to the hospital, three patients showed no evidence of DIC, eight had suspected DIC, and seven had manifest DIC. The intravascular coagulation process was progressive in all patients; upon delivery, eight patients proved to have suspected DIC and ten had manifest DIC. The laboratory criteria of DIC were found to agree with the degree of organ dysfunction. Patients with manifest DIC at delivery developed significantly more life-threatening maternal complications than did patients with suspected DIC (P less than .02). Conservative management was not possible in any patients who were admitted with overt DIC because of deterioration of maternal and fetal status. Application of a sensitive DIC scoring system may be valuable in managing patients with the HELLP syndrome and selecting patients who may be treated expectantly.


Assuntos
Ensaios Enzimáticos Clínicos , Coagulação Intravascular Disseminada/sangue , Hemólise , Fígado/enzimologia , Pré-Eclâmpsia/sangue , Adulto , Testes de Coagulação Sanguínea , Coagulação Intravascular Disseminada/diagnóstico , Feminino , Humanos , Contagem de Plaquetas , Gravidez , Estudos Prospectivos , Síndrome
14.
Phys Med Biol ; 45(9): L39-43, 2000 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-11008947

RESUMO

The first operation of the European Synchrotron Radiation Facility (ESRF) medical beamline is reported in this paper. The goal of the angiography project is to develop a reduced risk imaging technique, which can be used to follow up patients after coronary intervention. After the intravenous injection of a contrast agent (iodine) two images are produced with monochromatic beams, bracketing the iodine K-edge. The logarithmic subtraction of the two measurements results in an iodine enhanced image, which can be precisely quantified. A research protocol has been designed to evaluate the performances of this method in comparison with the conventional technique. Patients included in the protocol have previously undergone angioplasty. If a re-stenosis is suspected, the patient is imaged both at the ESRF and at the hospital with the conventional technique, within the next few days. This paper reports the results obtained with the first patients. To date, eight patients have been imaged and excellent image quality was obtained.


Assuntos
Angiografia Coronária/instrumentação , Angiografia Coronária/métodos , Síncrotrons , Angioplastia Coronária com Balão/instrumentação , Angioplastia Coronária com Balão/métodos , Europa (Continente) , França , Humanos
15.
Comp Immunol Microbiol Infect Dis ; 22(3): 187-97, 1999 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-10391506

RESUMO

The reverse transcriptase polymerase chain reaction (RT-PCR) assay was used to detect Equine Arteritis Virus (EAV) in the semen of 88 horses and 2 donkeys, with neutralising antibodies against EAV, on the basis of the amplification of a 279 bp long fragment located in the viral polymerase gene. The RT-PCR assay revealed the virus at 4 TCID50/ml in cell culture and showed a greater sensitivity (54.4%) than cell culture isolation (33.3%). Moreover, the two samples of donkey semen were found positive. The cDNAs obtained from 14 samples of horse and 2 of donkey semen were sequenced. Comparing the sequence of reference strain Bucyrus, the analysed samples were 78-100% identical and showed a 84-97% nucleotide identity with Bucyrus isolate. The results demonstrate high levels of genomic heterogeneity among the extracted RNAs, but inside the fragment amplified a well-preserved region of 24 bp was found with only three mismatches in some samples, suggesting that this could be ideal as a probe for RT-PCR-ELISA. The RT-PCR-ELISA assay using the EAV 7 and 8 primer set, has proved to be sensitive, specific and above all directly applicable to semen. Additionally, the short time needed for the overall procedure makes this method suitable for diagnostic purposes.


Assuntos
Infecções por Arterivirus/veterinária , Ensaio de Imunoadsorção Enzimática/veterinária , Equartevirus/isolamento & purificação , Doenças dos Cavalos/virologia , Reação em Cadeia da Polimerase Via Transcriptase Reversa/veterinária , Sêmen/virologia , Animais , Anticorpos Antivirais/sangue , Sequência de Bases , Células Cultivadas , Primers do DNA , DNA Viral/análise , Equartevirus/imunologia , Cavalos , Rim , Masculino , Dados de Sequência Molecular , RNA Viral/isolamento & purificação , RNA Viral/metabolismo , Coelhos
16.
Contraception ; 43(5): 413-21, 1991 May.
Artigo em Inglês | MEDLINE | ID: mdl-1914456

RESUMO

In a large and open prospective multicenter trial of 12,250 cycles from 2,378 women, contraceptive efficacy, clinical tolerance and acceptability of a new monophasic contraceptive combination containing 75 mcg gestodene (delta-5-levonorgestrel) and 30 mcg ethinyl oestradiol were studied. The objective was to assess efficacy, safety, side effects and cycle control of this oral contraceptive on healthy women using no other additional birth control methods. Two women became pregnant (0.016%) during the trial; both were patient failures. There was no effect on systolic or diastolic pressures. An average weight increase of 0.3 kg was noted. Cycle control was excellent with 95% of the cycles free of spotting and 98% free of breakthrough bleeding after six cycles. No serious complications occurred. There was an overall incidence of 14% reported side effects (after six cycles), indicating that the hormonal combination is well tolerated. It should be noted that 41.4% of the patients had some complaint before starting the treatment. For all complaints, a highly significant improvement was seen during the treatment.


PIP: In a large and open prospective multicenter trial of 12,250 cycles from 2378 women, contraceptive efficacy, clinical tolerance, and acceptability of a new monophasic oral contraceptive (OC) containing 75 mcg gestodene (delta-5-levonorgestrel) and 30 mcg ethinyl estradiol (EE) were studied. The objective was to assess efficacy, safety, side effects, and cycle control for this OC on healthy women using no other additional birth control methods. 2 women became pregnant (0.016%) during the trial; both were patient failures. There were no side effects on systolic or diastolic pressure. An average weight increase of 0.3 kg was noted. Cycle control was excellent with 95% of the cycles free of spotting and 98% free of breakthrough bleeding after 6 cycles. no serious complications occurred. There was an overall incidence of 14% who reported side effects after 6 cycles, indicating that the hormonal combination is well-tolerated. It should be noted that 41.4% of the patients had some complaint prior to the start of treatment. For all complaints, a highly significant improvement was seen during treatment.


Assuntos
Anticoncepcionais Orais Combinados/farmacologia , Norpregnenos/farmacologia , Adolescente , Adulto , Amenorreia/induzido quimicamente , Pressão Sanguínea/efeitos dos fármacos , Anticoncepcionais Orais Combinados/efeitos adversos , Etinilestradiol/efeitos adversos , Etinilestradiol/farmacologia , Feminino , Humanos , Ciclo Menstrual/efeitos dos fármacos , Norpregnenos/efeitos adversos , Aceitação pelo Paciente de Cuidados de Saúde , Estudos Prospectivos , Aumento de Peso/efeitos dos fármacos
17.
Contraception ; 57(1): 45-8, 1998 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-9554250

RESUMO

Levels of inhibin A and B as well as other hormones in serum samples obtained during the pill-free interval in women taking combined oral contraceptives (OC) were measured to asses the extent of ovarian activity during that period. Type of pill and day of pill-free interval were recorded during routine gynecologic check-ups, if patients were in the pill-free period and had taken their pills regularly in the previous cycle. In addition to inhibin A and B, serum levels of follicle-stimulating hormone (FSH), luteinizing hormone (LH), estradiol (E2), and progesterone were also quantified. Inhibin B levels rise significantly in parallel with rising levels of FSH, LH, and E2. Progesterone levels were completely suppressed and inhibin A levels rose slightly but insignificantly. Inhibins are sensitive biochemical markers of ovarian activity in pill-free intervals.


PIP: Serum values of dimeric inhibin A and B were measured to assess the restoration of pituitary and ovarian activity during the pill-free interval in women taking combined oral contraceptives. 175 healthy women 18-35 years of age from five areas in Belgium were enrolled and monitored during routine gynecologic examinations. During the 7 day pill-free interval, inhibin B levels rose significantly in parallel with rising levels of follicle-stimulating hormone, luteinizing hormone, and estradiol. Progesterone levels were completely suppressed. Inhibin A levels rose slightly but insignificantly, reflecting an absence of development of preovulatory follicles. These findings indicate that inhibins are sensitive biochemical markers of ovarian activity in pill-free intervals. Inhibin B appears to be predominantly a product of the cohort of developing primary and subsequent early antral follicles, while inhibin A secretion is more indicative of dominant follicular and corpus luteum function.


Assuntos
Congêneres do Estradiol/administração & dosagem , Etinilestradiol/administração & dosagem , Inibinas/sangue , Folículo Ovariano/efeitos dos fármacos , Progestinas/administração & dosagem , Adulto , Biomarcadores/sangue , Estudos de Coortes , Dimerização , Relação Dose-Resposta a Droga , Combinação de Medicamentos , Estradiol/sangue , Estradiol/metabolismo , Feminino , Hormônio Foliculoestimulante/sangue , Hormônio Foliculoestimulante/metabolismo , Humanos , Inibinas/química , Inibinas/efeitos dos fármacos , Inibinas/metabolismo , Hormônio Luteinizante/sangue , Hormônio Luteinizante/efeitos dos fármacos , Folículo Ovariano/fisiologia , Progesterona/sangue , Progesterona/metabolismo , Fatores de Tempo
18.
Eur J Obstet Gynecol Reprod Biol ; 63(2): 187-9, 1995 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-8903776

RESUMO

This report describes a rare coincidence of ureteral endometriosis and ovarian stimulation. A patient presented with acute renal colic after ovarian stimulation. Although rare intrinsic ureteral endometriosis should be considered when establishing differential diagnosis. Laparoscopic treatment for extensive endometriosis has been described but should only be performed by very experienced operative laparoscopists. A new long-term post-operative treatment is proposed combining LH-RH analogues with the new molecule tibolone as add-back therapy.


Assuntos
Endometriose/complicações , Síndrome de Hiperestimulação Ovariana/complicações , Doenças Ureterais/complicações , Adulto , Anabolizantes/uso terapêutico , Endometriose/tratamento farmacológico , Feminino , Fertilização in vitro , Hormônio Liberador de Gonadotropina/análogos & derivados , Hormônio Liberador de Gonadotropina/uso terapêutico , Humanos , Infertilidade/terapia , Norpregnenos/uso terapêutico , Síndrome de Hiperestimulação Ovariana/tratamento farmacológico
19.
Eur J Obstet Gynecol Reprod Biol ; 33(1): 61-9, 1989 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-2806708

RESUMO

The course of gestation and the outcome of fifteen triplet and six quadruplet pregnancies are reviewed. Twenty pregnancies followed induction of ovulation and only one was spontaneous. Bed rest, the use of beta-mimetics and betamethasone, and prolonged hospitalisation were part of the management. Elective cervical suture was not used. The most frequent antenatal complications were preterm labor, preterm rupture of membranes and pregnancy-induced hypertension. The median gestational age was 33.5 weeks in the triplets and 32 weeks in the quadruplets. The overall perinatal and neonatal mortality was 4.9%. The neonatal complications resulted from prematurity and sepsis.


Assuntos
Resultado da Gravidez , Gravidez Múltipla , Adulto , Peso ao Nascer , Feminino , Idade Gestacional , Humanos , Gravidez , Quadrigêmeos , Trigêmeos
20.
Minerva Chir ; 58(1): 123-8, 2003 Feb.
Artigo em Italiano | MEDLINE | ID: mdl-12692509

RESUMO

BACKGROUND: In literature the incidence of paresthesia caused by long stripping (LS) of the saphenous vein (SV) varies widely. Best results have been reported with the invagination technique by Van Der Stricht. However, this technique is associated with a high incidence of vein rupture and incomplete stripping. The aim of this study is to test a personal technique to avoid the SV rupture and to reduce the incidence of saphenous nerve injury. METHODS: Sixty-eight patients underwent LS of the SV from groin to ankle under monolateral spinal anesthesia on a one-day surgery basis using a personal technique combining external and invaginated saphenous stripping. All patients underwent a clinical re-evalutation 1, 3, 6, 12, 24 and 48 months after the operation. RESULTS: No intraoperative complications were recorded. Stripping of the long saphenous vein was complete in all cases without any rupture of the veins. Only one postoperative hematoma of the leg (1.5%) which was naturally reabsorbed, was recorded; four patients (5.9%) had transitory saphenous nerve injury. Permanent saphenous nerve damage was found in only one of 68 patients (1.5%). All the patients were discharged on the day of operation and we did not register any prolonged hospitalization. CONCLUSIONS: The result of our approach was a very low postoperative complication rate (1.5% of permanent neurological damage) without any rupture of the vein.


Assuntos
Complicações Intraoperatórias/prevenção & controle , Traumatismos dos Nervos Periféricos , Veia Safena/cirurgia , Adulto , Procedimentos Cirúrgicos Ambulatórios/estatística & dados numéricos , Seguimentos , Humanos , Pessoa de Meia-Idade , Complicações Pós-Operatórias , Estudos Prospectivos , Insuficiência Venosa/cirurgia
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