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1.
Prog Urol ; 32(5): 388-399, 2022 Apr.
Artículo en Francés | MEDLINE | ID: mdl-35125316

RESUMEN

INTRODUCTION: Inflammatory and sensory chronic bladder diseases have a significant impact on quality of life. These pathologies share alteration of the layer between urine and urothelium, making the use of topical agents appropriate. OBJECTIVES: Review the efficacy and tolerance of intravesical treatments for these pathologies. Give practical guidelines for the use of agents currently available in France. METHOD: A narrative review was performed in March 2021 using PubMed/MEDLINE, Google Scholar and the international guidelines. Pharmaceutical companies and pharmacies were interviewed. RESULTS: Although numerous molecules were tested over the last 5 decades, only dimethylsulfoxyde and glycosaminoglycans are available in France today. Results are promising: response rates are up to 95% and 84% respectively in bladder pain syndrome. In urinary tract infections, glycosaminoglycans could decrease annual number of cystitis by 2.56 (95% confidence interval (CI) -3.86, -1.26; P<0.001) and increase the time to first cystitis recurrence by 130 days (95% CI: 5.84 - 254.26; P=0.04). In radiation cystitis, results could be comparable to hyperbaric oxygen regarding pain and frequency of voiding (-1.31±1.3 visual analogic scale et -1.5±1.4 voiding per day, respectively, at 12 months, P<0.01). However, literature has a low level of evidence. CONCLUSION: Chronic bladder diseases have limited treatment options. Intravesical agents are a good alternative, although their cost is significant and their outcome uncertain.


Asunto(s)
Cistitis Intersticial , Cistitis , Administración Intravesical , Enfermedad Crónica , Cistitis/tratamiento farmacológico , Cistitis Intersticial/tratamiento farmacológico , Femenino , Glicosaminoglicanos/uso terapéutico , Humanos , Masculino , Calidad de Vida
2.
Prog Urol ; 32(4): 247-257, 2022 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-34920924

RESUMEN

OBJECTIVE: To determine the usefulness of mid-urethral slings (MUS) in the surgical management of women presenting with urinary stress incontinence (USI) METHOD: A consensus committee of multidisciplinary experts (CUROPF) was convened and focused on PICO questions concerning the efficacy and safety of MUS surgery compared to other procedures and concerning which approach (retropubic (RP) vs transobturator (TO)) should be proposed as a first-line MUS surgery for specific subpopulations (obese; intrinsic sphincteric deficiency (ISD); elderly) RESULTS: As compared to other procedures (urethral bulking agents, traditional slings and open colposuspension), the MUS procedure should be proposed as the first-line surgical therapy (strong agreement). MUS surgery can be associated with complications and proper pre-operative informed consent is mandatory (strong agreement). Mini-slings (SIS/SIMS) should only be proposed in clinical trials (strong agreement). Both RP and TO approaches may be proposed for the insertion of MUS (strong agreement). However, if the woman is willing to accept a moderate increase in per-operative risk, the RP approach should be preferred (strong agreement) since it is associated with higher very long-term cure rates and as it is possible to completely remove the sling surgically if a severe complication occurs. The RP approach should be used for the insertion of MUS in a woman presenting with ISD (strong agreement). Either the RP or TO approach should be used for the insertion of MUS in an obese woman presenting with USI (strong agreement). In very obese women (BMI ≥35-40kg/m2), weight loss should be preferred prior to MUS surgery and bariatric surgery should be discussed (strong agreement) CONCLUSION: The current Opinion provides an appropriate strategy for both the selection of patients and the best therapeutic approach in women presenting with USI.


Asunto(s)
Cabestrillo Suburetral , Enfermedades Uretrales , Incontinencia Urinaria de Esfuerzo , Anciano , Femenino , Humanos , Masculino , Cabestrillo Suburetral/efectos adversos , Resultado del Tratamiento , Uretra , Enfermedades Uretrales/complicaciones , Incontinencia Urinaria de Esfuerzo/etiología , Incontinencia Urinaria de Esfuerzo/cirugía , Procedimientos Quirúrgicos Urológicos/métodos
3.
Prog Urol ; 31(17): 1141-1166, 2021 Dec.
Artículo en Francés | MEDLINE | ID: mdl-34794867

RESUMEN

INTRODUCTION: Placement of a mid-urethral sling is the gold standard in the surgical management of stress urinary incontinence in women in France. The cure rate of this material is no longer to be demonstrated, but the per- and post-operative complications are currently the subject of a growing controversy not only in Europe but also across the Channel and across the Atlantic, having led to the modification of operative indications. In France, recommendations are also evolving with a stricter framework for indications for surgery by multidisciplinary consultation meeting and an obligation for postoperative follow-up in the short and long term. OBJECTIVES: In this context, CUROPF realized a review of the literature bringing together the available scientific evidence concerning the occurrence of per- and post-operative complications relating to the installation of mid urethral sling. The bibliographic search was carried out using the Medline database and 123 articles were selected. RESULTS: Analysis of the data highlights various complications, depending on the implanted material, the patient and the indication for surgery. The retro-pubic mid urethral sling provides more bladder erosion during surgery (up to 14%), more suprapubic pain (up to 4%) and more acute urinary retention (up to 19,7%) and postoperative dysuria (up to 26%). The trans obturator mid-urethral sling is responsible for more vaginal erosion during the operation (up to 10,9%), more lower limb pain of neurological origin (up to 26,7%). The risk of developing over active bladder is similar in both procedures (up to 33%). But these risks of complications must be balanced by the strong impact of urinary incontinence surgery on the overall quality of life of these women. CONCLUSION: Thus, surgical failure and long term complications exist but should not limit the surgical management of stress urinary incontinence with mid urethral tape. Women should be treated with individualized decision-making process and long-term follow -up is necessary.


Asunto(s)
Cabestrillo Suburetral , Incontinencia Urinaria de Esfuerzo , Urología , Femenino , Humanos , Calidad de Vida , Cabestrillo Suburetral/efectos adversos , Resultado del Tratamiento , Incontinencia Urinaria de Esfuerzo/cirugía , Procedimientos Quirúrgicos Urológicos/efectos adversos
4.
Prog Urol ; 31(11): 634-650, 2021 Sep.
Artículo en Francés | MEDLINE | ID: mdl-33516611

RESUMEN

INTRODUCTION: Vaginal LASER therapy is increasingly used in the field of urogynecology, but several points remain unclear. Our goal was to produce a systematic review of available evidence and provide a critical appraisal of available data. METHODS: A systematic review until march 2020 was conducted using PubMed/MEDLINE, Cochrane and Embase databases. All studies about vaginal LASER use in the field of urogynecology were included. RESULTS: Forty studies have been included (8 for genitourinary syndrome of menopause, 19 for stress urinary incontinence, 3 for overactive bladder, 7 for urogenital prolapse, 3 for other indications). Data were heterogeneous, and level of evidence was weak or very weak. Few studies were comparative, and only 3 were randomized). Mild improvement of symptoms and quality of life and limited satisfaction were seen for genitourinary syndrome, stress urinary incontinence, overactive bladder and prolapse. Few adverse events were reported. However, major methodological biases were noted regarding efficacy and safety evaluation. No long-term results were available. CONCLUSIONS: While Vaginal LASER therapy seem to provide encouraging results, the level of evidence supporting its use was weak, especially regarding long-term outcomes. Studies of better quality are warranted before any recommendation can be made. Current use should be limited to clinical research.


Asunto(s)
Terapia por Láser , Incontinencia Urinaria de Esfuerzo , Urología , Femenino , Humanos , Rayos Láser , Calidad de Vida , Incontinencia Urinaria de Esfuerzo/cirugía , Vagina
5.
Phys Rev Lett ; 118(25): 251301, 2017 Jun 23.
Artículo en Inglés | MEDLINE | ID: mdl-28696731

RESUMEN

New results are reported from the operation of the PICO-60 dark matter detector, a bubble chamber filled with 52 kg of C_{3}F_{8} located in the SNOLAB underground laboratory. As in previous PICO bubble chambers, PICO-60 C_{3}F_{8} exhibits excellent electron recoil and alpha decay rejection, and the observed multiple-scattering neutron rate indicates a single-scatter neutron background of less than one event per month. A blind analysis of an efficiency-corrected 1167-kg day exposure at a 3.3-keV thermodynamic threshold reveals no single-scattering nuclear recoil candidates, consistent with the predicted background. These results set the most stringent direct-detection constraint to date on the weakly interacting massive particle (WIMP)-proton spin-dependent cross section at 3.4×10^{-41} cm^{2} for a 30-GeV c^{-2} WIMP, more than 1 order of magnitude improvement from previous PICO results.

6.
Phys Rev Lett ; 114(23): 231302, 2015 Jun 12.
Artículo en Inglés | MEDLINE | ID: mdl-26196790

RESUMEN

New data are reported from the operation of a 2 liter C3F8 bubble chamber in the SNOLAB underground laboratory, with a total exposure of 211.5 kg days at four different energy thresholds below 10 keV. These data show that C3F8 provides excellent electron-recoil and alpha rejection capabilities at very low thresholds. The chamber exhibits an electron-recoil sensitivity of <3.5×10(-10) and an alpha rejection factor of >98.2%. These data also include the first observation of a dependence of acoustic signal on alpha energy. Twelve single nuclear recoil event candidates were observed during the run. The candidate events exhibit timing characteristics that are not consistent with the hypothesis of a uniform time distribution, and no evidence for a dark matter signal is claimed. These data provide the most sensitive direct detection constraints on WIMP-proton spin-dependent scattering to date, with significant sensitivity at low WIMP masses for spin-independent WIMP-nucleon scattering.


Asunto(s)
Fluorocarburos/química , Modelos Teóricos , Acústica/instrumentación , Algoritmos , Neutrones
7.
Mol Cell Neurosci ; 61: 176-86, 2014 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-24983516

RESUMEN

In the post-natal rodent brain, neuronal precursors originating from the sub-ventricular zone (SVZ) migrate over a long distance along the rostral migratory stream (RMS) to eventually integrate the olfactory bulb neuronal circuitry. In order to identify new genes specifically expressed in the RMS, we have screened the Allen Brain Atlas Database. We focused our attention on Thrombospondin 4 (Thbs4), one of the 5 members of the Thrombospondin family of large, multidomain, extracellular matrix proteins. In post-natal and adult brain Thbs4 mRNA and protein are specifically expressed in the neurogenic regions, including the SVZ and along the entire RMS. RMS cells expressing Thbs4 are GFAP (Glial Fibrillary Acidic Protein) positive astrocytes. Histological analysis in both wild-type and Thbs4 knock-out mice revealed no major abnormality in the general morphology of these neurogenic regions. Nevertheless, immunostaining for doublecortin demonstrates that in Thbs4-KO, migration of newly formed neurons along the RMS is somehow impaired, with several neurons migrating out of the RMS. This is further supported by a Bromodeoxyuridine-based in vivo approach showing a decrease in the number of newly born neuronal precursors reaching the olfactory bulb, while proliferation in the SVZ is not affected compared to wild-type, both in young animals (P15) and in adults (8 to 12 weeks of age). Corroborating this observation, the number of Parvalbumin- and Calbindin-immunoreactive interneurons in the olfactory bulb is also reduced in Thbs4-KO. Together, these observations support a role for the astrocyte-secreted protein Thbs4 in the migration of newly form neurons within the RMS to the olfactory bulb.


Asunto(s)
Envejecimiento , Movimiento Celular/genética , Regulación del Desarrollo de la Expresión Génica/genética , Ventrículos Laterales/citología , Ventrículos Laterales/crecimiento & desarrollo , Trombospondinas/deficiencia , Animales , Animales Recién Nacidos , Astrocitos/metabolismo , Proliferación Celular/genética , Proteína Ácida Fibrilar de la Glía/metabolismo , Ratones , Ratones Endogámicos C57BL , Ratones Noqueados , Vías Nerviosas/fisiología , ARN Mensajero/metabolismo , Trombospondinas/genética
8.
Prenat Diagn ; 34(5): 424-30, 2014 May.
Artículo en Inglés | MEDLINE | ID: mdl-24395195

RESUMEN

OBJECTIVE: The 22q11.2 deletion (del22q11.2) is one of the most common microdeletions. We performed a collaborative, retrospective analysis in France of prenatal diagnoses and outcomes of fetuses carrying the del22q11.2. METHODS: A total of 272 fetuses were included. Data on prenatal diagnosis, ultrasound findings, pathological features, outcomes and inheritance were analyzed. RESULTS: The mean time of prenatal diagnosis was 25.6 ± 6 weeks of gestation. Most of the diagnoses (86.8%) were prompted by abnormal ultrasound findings [heart defects (HDs), in 83.8% of cases]. On fetal autopsy, HDs were again the most common disease feature, but thymus, kidney abnormalities and facial dysmorphism were also described. The deletion was inherited in 27% of cases. Termination of pregnancy (TOP) occurred in 68.9% of cases and did not appear to depend on the inheritance status. However, early diagnosis was associated with a higher TOP rate. CONCLUSION: This is the largest cohort of prenatal del22q11.2 diagnoses. As in postnatally diagnosed cases, HDs were the most frequently observed abnormalities. However, thymus and kidney abnormalities and polyhydramnios should also be screened for in the prenatal diagnosis of del22q11.2. Only the time of diagnosis appeared to be strongly associated with the pregnancy outcome: the earlier the diagnosis, the higher the TOP rate.


Asunto(s)
Anomalías Múltiples/diagnóstico por imagen , Síndrome de DiGeorge/diagnóstico , Resultado del Embarazo , Ultrasonografía Prenatal , Adolescente , Adulto , Autopsia , Síndrome de DiGeorge/epidemiología , Femenino , Feto , Francia , Encuestas Epidemiológicas , Humanos , Persona de Mediana Edad , Embarazo , Estudios Retrospectivos , Adulto Joven
9.
Eur Phys J C Part Fields ; 83(8): 717, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37576939

RESUMEN

The DARWIN observatory is a proposed next-generation experiment with 40 tonnes of liquid xenon as an active target in a time projection chamber. To study challenges related to the construction and operation of a multi-tonne scale detector, we have designed and constructed a vertical, full-scale demonstrator for the DARWIN experiment at the University of Zurich. Here, we present the first results from a several-months run with 343kg of xenon and electron drift lifetime and transport measurements with a 53cm tall purity monitor immersed in the cryogenic liquid. After 88days of continuous purification, the electron lifetime reached a value of (664±23)µs. We measured the drift velocity of electrons for electric fields in the range (25-75) V/cm, and found values consistent with previous measurements. We also calculated the longitudinal diffusion constant of the electron cloud in the same field range, and compared with previous data, as well as with predictions from an empirical model.

10.
Skin Pharmacol Physiol ; 25(2): 78-85, 2012.
Artículo en Inglés | MEDLINE | ID: mdl-22236795

RESUMEN

BACKGROUND: Many researchers have studied differences in conditions of ethnic skin using biophysical measurements. However, few studies to date have focused on the antioxidative capacity of the skin. METHODS: We measured two parameters of oxidative stress in the stratum corneum, catalase activity and protein carbonylation of the stratum corneum (SCCP), in two ethnic groups, Japanese and French subjects, to characterize the susceptibility to oxidative stress. We also measured several physiological parameters at three different skin sites, two sun-exposed sites (cheek and dorsal aspect of the hand) and a sun-protected site (inner upper arm), in both ethnic groups. RESULTS: Transepidermal water loss (TEWL), the size of corneocytes and skin color showed differences between sun-exposed and sun-protected sites regardless of ethnicity. Regarding ethnic differences, catalase activities and parameters of skin hydration and barrier function of Japanese subjects were higher than those of French subjects. However, SCCP values showed a trend contrary to catalase activity. The difference in the b* value indicated that the melanin content of Japanese skin was higher than that of French skin. Pearson's correlation analyses showed that catalase activity and SCCP values had weak relationships with water content, TEWL and skin color in both ethnic groups. CONCLUSION: Differences in susceptibility to oxidative stress, namely melanin content and catalase activity in the skin, induce the better skin condition of Japanese compared with French subjects.


Asunto(s)
Antioxidantes/metabolismo , Estrés Oxidativo/fisiología , Piel/metabolismo , Luz Solar/efectos adversos , Adolescente , Adulto , Pueblo Asiatico , Catalasa/metabolismo , Etnicidad , Femenino , Francia , Humanos , Japón , Masculino , Melaninas/metabolismo , Persona de Mediana Edad , Carbonilación Proteica/fisiología , Pigmentación de la Piel/fisiología , Pérdida Insensible de Agua/fisiología , Población Blanca , Adulto Joven
11.
JDR Clin Trans Res ; 7(4): 371-378, 2022 10.
Artículo en Inglés | MEDLINE | ID: mdl-34628965

RESUMEN

BACKGROUND: The use of physical constraint in pediatric dentistry is highly controversial. Papoose boards in particular, which envelop and immobilize children during treatment procedures, have been described as barbaric devices even though their goal is to protect the patient. In this debate, the voice of parents is important but still missing in the scientific literature. AIM: To understand how parents or caregivers experienced physical constraint and the use of the papoose board on their children during regular dental treatment. DESIGN: We conducted qualitative research rooted in interpretive phenomenology. Accordingly, we performed in-depth individual interviews with a purposive sample of 7 parents or caregivers. The interviews took place in Montréal, Canada, after the children had been treated with a papoose board for nonemergency dental treatments. The discussions were audio recorded, transcribed, and thematically analyzed. RESULTS: Two perspectives emerged among participants. Some explained that the papoose board calmed their children, helped the dentist to complete the procedures, and made their experience less stressful. For others, the papoose board was a horrible and traumatizing experience, leading to feelings of guilt toward their children. They expressed anger toward the dentists for not allowing them enough time to decide and for imposing use of the device. CONCLUSION: Our study raises serious ethical concerns about this practice. We believe that using a papoose board should remain an extraordinary measure and, more generally, that dental professionals should reflect on the place of children and their families in clinical encounters. KNOWLEDGE TRANSFER STATEMENT: The findings of this study should encourage policy makers, dental professionals and ethicists to consider the following points: 1) the traumatizing experiences described by parents raise serious ethical concerns about the use of papoose boards; 2) the dental profession should reflect on the place of children and their families in the clinical encounter and grapple with the importance of consent and how to ensure consent in encounters involving children and their parents.


Asunto(s)
Padres , Odontología Pediátrica , Canadá , Cuidadores , Niño , Humanos , Investigación Cualitativa
12.
Eur J Neurosci ; 34(12): 1934-43, 2011 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-22128821

RESUMEN

A solitary, elongated cluster of parvalbumin-immunoreactive neurons has been previously observed in the rodent ventrolateral hypothalamus. However, the function of this so-called PV1 nucleus is unknown. In this article, we report the results of an unbiased, broad and in-depth molecular characterization of this small, compact group of neurons. The Allen Brain Atlas database of in situ hybridization was screened in order to identify genes expressed in the PV1-nucleus-containing area of the hypothalamus, and those that might be co-expressed with parvalbumin. Although GABA is the principal neurotransmitter in parvalbumin-expressing cells in various other brain areas, we found that PV1 neurons express the vesicular glutamate transporter (VGlut) VGlut2-encoding gene Slc17a6 and are negative for the glutamic acid decarboxylase 1 (GAD1) gene. These cells also express the mRNA for the neuropeptides Adcyap1 and possibly Nxph4, express several types of potassium and sodium channels, are under the control of the neurotransmitter acetylcholine, bear receptors for the glial-derived neurotrophic factor, and produce an extracellular matrix rich in osteopontin. The PV1 nucleus is thus composed of glutamatergic nerve cells, expressing some typical markers of long-axon, projecting neurons (e.g. VGlut2), but also co-expressing genes typical of short-axon GABA neurons (e.g. a variety of potassium channels). Hence, neurons of the PV1 nucleus combine physiological characteristics of interneurons with those of projection neurons.


Asunto(s)
Hipotálamo/anatomía & histología , Hipotálamo/fisiología , Neuronas/fisiología , Parvalbúminas/metabolismo , Animales , Biología Computacional/métodos , Perfilación de la Expresión Génica , Macaca fascicularis , Ratones , Ratones Endogámicos C57BL , Neuronas/citología , Parvalbúminas/genética
13.
Eur Respir J ; 38(6): 1368-73, 2011 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-22075486

RESUMEN

The objectives of this study were to compare the survival of sarcoid patients with pulmonary fibrosis with that of the general population and to determine the causes of death and the incidence of evolutive complications. This retrospective cohort included 142 sarcoid patients in radiographic stage IV (74 males; mean ± SD age 48.1 ± 12 yrs). Their survival was compared with that of the general French population, matched for the year and age at diagnosis of stage IV disease, sex and length of follow-up. Expected survival probabilities were calculated year-by-year on the basis of probabilities provided by official demographic data for France. Survival curves were based on the Kaplan-Meier method and compared using the log-rank test. During the follow-up period (7.1 ± 4.8 yrs), pulmonary hypertension (PH) was observed in 29.7% of cases and aspergilloma in 11.3%. Long-term oxygen therapy was required in 12%. Survival was 84.1% at 10 yrs, which was worse than for the general population (p = 0.013). 16 (11.3%) patients died from the following causes: refractory PH (n = 5), chronic respiratory insufficiency (n = 4), acute respiratory insufficiency (n = 2), haemoptysis due to aspergilloma (n = 1), heart sarcoidosis (n = 1), nocardiosis (n = 1) and unknown causes (n = 2). Survival is significantly decreased in stage IV patients. 75% of fatalities are directly attributable to respiratory causes.


Asunto(s)
Causas de Muerte , Sarcoidosis Pulmonar/mortalidad , Tasa de Supervivencia , Adulto , Aspergilosis/epidemiología , Aspergilosis/terapia , Femenino , Francia/epidemiología , Humanos , Hipertensión Pulmonar/epidemiología , Inmunosupresores/uso terapéutico , Incidencia , Masculino , Persona de Mediana Edad , Terapia por Inhalación de Oxígeno , Prevalencia , Pronóstico , Fibrosis Pulmonar/terapia , Radiografía , Estudios Retrospectivos , Sarcoidosis Pulmonar/diagnóstico por imagen , Sarcoidosis Pulmonar/tratamiento farmacológico , Sarcoidosis Pulmonar/terapia , Índice de Severidad de la Enfermedad
14.
Anal Bioanal Chem ; 399(2): 621-8, 2011 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-21069304

RESUMEN

The recently revised European Pharmacopeia and US Pharmacopeia heparin sodium monographs include nuclear magnetic resonance (NMR) tests on both identity and purity. In KMnO(4)-bleached heparin, an unidentified NMR signal is present at 2.10 ppm at a level of 15-20% of the mean of signal height of the major glucosamine (GlcNAc/GlcNS,6S) anomeric proton signal at 5.42 ppm and of the major iduronic acid (IdoA2S) anomeric proton signal at 5.21 ppm. According to the new monographs, no unidentified signals greater than 4% should be detected at that position. Thus, the material did not meet the acceptance criterion. The signal at 2.10 ppm has been present at the same level in all released MSD KMnO(4)-bleached heparin sodium batches analyzed over the past 10 years. The signal is a result of the KMnO(4) bleaching. No (oversulfated) chondroitin sulfate or dermatan sulfate was detected in this material. A comprehensive NMR study using long-range heteronuclear 2D techniques identifies this signal at 2.10 ppm as originating from the acetyl methyl group of (6-sulfated) 2-N-acetyl-2-deoxy-glucono-1,5-lactone. This modified monosaccharide is formed by the KMnO(4) oxidation of the reducing end of a terminal N-acetylglucosamine.


Asunto(s)
Anticoagulantes/química , Contaminación de Medicamentos , Heparina/química , Espectroscopía de Resonancia Magnética/métodos , Permanganato de Potasio/química , Sulfatos de Condroitina/análisis , Dermatán Sulfato/análisis
15.
Healthc Financ Manage ; 65(3): 92-6, 98, 2011 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-21449311

RESUMEN

Finance should lead purchasing contract development by: Establishing fair prices up front. Gaining buy-in from physicians. Developing a continuous system of controls.


Asunto(s)
Eficiencia Organizacional/economía , Administradores de Hospital , Administración de Materiales de Hospital/economía , Rol Profesional , Contratos/economía , Estados Unidos
16.
Neoplasma ; 57(5): 488-93, 2010.
Artículo en Inglés | MEDLINE | ID: mdl-20568904

RESUMEN

PSA, the only relevant marker for prostate cancer, has a low predictive value; moreover its low threshold leads to unnecessary biopsies with associated complications. Identification of prognostic factors is an important goal in prostate cancer. In the search for new markers, clusterin, has some potential as it is closely linked with cancer progression and resistance to apoptosis. We looked at the expression of secreted clusterin (sCLU) in prostate cells to determine correlations with progression and drug resistance. The plasmatic expression of sCLU was also investigated in order to use it as a potential marker for prostate cancer. sCLU expression was studied using Western blotting on cultured prostate cells, PWR-1E, PC3 and PC3 Docetaxel resistant cells in the cytosol and culture medium. An inhouse ELISA test was developed to determine sCLU expression in culture media and plasma samples. A patient cohort was identified from the Prostate Cancer Research Consortium Bio-Resource and plasmatic expression of sCLU was studied using western blotting and the inhouse ELISA test. Only the fully processed form of sCLU was identified in the medium of cells with increased expression associated with increased progression of disease and resistance to docetaxel. Plasmatic expression of sCLU was significantly higher in the plasma of patients with high grade prostate cancer with extracapsular extension than in the plasma of prostate cancer patients without extracapsular extension. Plasmatic sCLU may be an effective prognostic marker of prostate cancer and needs to be tested in a multimarker approach.


Asunto(s)
Clusterina/análisis , Neoplasias de la Próstata/química , Anciano , Biomarcadores de Tumor/análisis , Línea Celular Tumoral , Clusterina/sangre , Clusterina/orina , Ensayo de Inmunoadsorción Enzimática , Humanos , Masculino , Persona de Mediana Edad
17.
Healthc Financ Manage ; 64(3): 92-6, 98, 2010 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-20214113

RESUMEN

CFOs need to be aware of controversies surrounding some new technologies that are being aggressively marketed to physicians, including well-founded criticisms that justify denial of a physician's request for a technology. In responding to such requests, CFOs should consider intangibles such as potential revenue impacts, good will, internal and external service levels, and outcomes of services. To help in making such decisions, CFOs should identify a clinical confidant and form a materials use evaluation committee.


Asunto(s)
Toma de Decisiones , Administración Financiera de Hospitales , Administradores de Hospital , Ciencia del Laboratorio Clínico , Médicos , Difusión de Innovaciones
18.
Eur Phys J C Part Fields ; 80(5): 477, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32508522

RESUMEN

For the first time, a small dual-phase (liquid/gas) xenon time projection chamber was equipped with a top array of silicon photomultipliers for light and charge readout. Here we describe the instrument in detail, as well as the data processing and the event position reconstruction algorithms. We obtain a spatial resolution of ∼ 1.5 mm in the horizontal plane. To characterise the detector performance, we show calibration data with internal 83 m Kr and 37 Ar sources, and we detail the production of the latter as well as its introduction into the system. We finally compare the observed light and charge yields down to electronic recoil energies of 2.82 keV to predictions based on NEST v2.0.

19.
J Cell Biol ; 118(4): 785-94, 1992 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-1500423

RESUMEN

A family of proteins homologous to the cdc25 gene product of the fission yeast bear specific protein tyrosine phosphatase activity involved in the activation of the p34cdc2-cyclin B kinase. Using affinity-purified antibodies raised against a synthetic peptide corresponding to the catalytic site of the cdc25 phosphatase, we show that cdc25 protein is constitutively expressed throughout the cell cycle of nontransformed mammalian fibroblasts and does not undergo major changes in protein level. By indirect immunofluorescence, cdc25 protein is found essentially localized in the nucleus throughout interphase and during early prophase. Just before the complete nuclear envelope breakdown at the prophase-prometaphase boundary, cdc25 proteins are redistributed throughout the cytoplasm. During metaphase and anaphase, cdc25 staining remains distributed throughout the cell and excludes the condensed chromosomes. The nuclear locale reappears during telophase. In light of the recent data describing the cytoplasmic localization of cyclin B protein (Pines, J., and T. Hunter. 1991. J. Cell Biol. 115:1-17), the data presented here suggest that separation in two distinct cellular compartments of the cdc25 phosphatase and its substrate p34cdc2-cyclin B may be of importance in the regulation of the cdc2 kinase activity.


Asunto(s)
Ciclo Celular , Núcleo Celular/metabolismo , Proteínas Tirosina Fosfatasas/metabolismo , Proteínas/metabolismo , Secuencia de Aminoácidos , Animales , Línea Celular , Núcleo Celular/química , Citoplasma/química , Técnica del Anticuerpo Fluorescente , Humanos , Interfase , Mitosis , Datos de Secuencia Molecular , Membrana Nuclear/química , Biosíntesis de Proteínas , Proteínas Tirosina Fosfatasas/análisis , Proteínas/análisis , Fosfatasas cdc25
20.
J Cell Biol ; 128(5): 737-48, 1995 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-7876301

RESUMEN

We have studied the expression of the human SRY protein (termed p27SRY) in two different cell lines by using specific antibodies. Confocal microscopy enabled us to localize p27SRY precisely in the nucleus in a discrete punctuate pattern. Furthermore, through microinjection experiments, we have demonstrated that the localization of the p27SRY protein into the nucleus was an event involving the NH2-terminal part of the high mobility group (HMG) domain. With the help of several synthetic peptides and various p27SRY mutants, we have characterized a bipartite basic motif in this part of the protein corresponding to a nuclear localization signal. This nuclear localization signal appears to be highly conserved in SRY box- and HMB box-containing proteins, suggesting common properties of nuclear targeting within the HMG box protein family.


Asunto(s)
Núcleo Celular/ultraestructura , Proteínas de Unión al ADN/aislamiento & purificación , Proteínas Nucleares/aislamiento & purificación , Factores de Transcripción , Secuencia de Aminoácidos , Transporte Biológico , Núcleo Celular/química , Proteínas de Unión al ADN/genética , Proteínas de Unión al ADN/inmunología , Proteínas de Unión al ADN/metabolismo , Técnica del Anticuerpo Fluorescente , Proteínas del Grupo de Alta Movilidad , Humanos , Masculino , Datos de Secuencia Molecular , Proteínas Nucleares/genética , Proteínas Nucleares/inmunología , Proteínas Nucleares/metabolismo , Señales de Clasificación de Proteína/genética , Señales de Clasificación de Proteína/metabolismo , Homología de Secuencia de Aminoácido , Diferenciación Sexual/fisiología , Proteína de la Región Y Determinante del Sexo , Testículo/embriología , Células Tumorales Cultivadas
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