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1.
J Fr Ophtalmol ; 45(3): 331-337, 2022 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-35063295

RESUMEN

PURPOSE: To explore the national trend in prescriptions for glaucoma and ocular hypertension (OHT) in France between 2014 and 2019. METHODS: This is a retrospective descriptive study based on prescription data from the Primary Health Insurance Fund databases. All patients with a social security number who received one or more glaucoma/OHT prescriptions between 2014 and 2019 were identified. Figures for 2020 are not yet available as of the date of submission of this article. Demographic characteristics from Common Classification of Medical Acts information and from National Institute of Statistics and Economic Studies were analyzed. The data analysis was carried out using the R version 3.6.2.software from the available databases of the Information Systems Medicalization Program. RESULTS: Our results suggest an increase in the number of patients treated with glaucoma drugs, which cannot be explained simply by demographic growth. There is also a change in drug prescription habits, both in the class of medication used and in the use of fixed combinations. We also note the increasing use of SLT (Selective Laser Trabeculoplasty), a relatively newer tool in the therapeutic arsenal. Over the same time period, demographic characteristics remained stable; age and sex distribution for each year remained constant. In addition, the phenomenon of poor therapeutic compliance, which we attempted to explore, remained stable. DISCUSSION: This study updates the French epidemiologic data available on prescriptions for glaucoma and ocular hypertension, a true public health concern. CONCLUSION: On the one hand, prescribing practices have evolved over the study period. On the other hand, the number of patients treated has increased faster than the growth of the French population over the same period. These findings are consistent with trends observed in previous studies.


Asunto(s)
Glaucoma , Terapia por Láser , Hipertensión Ocular , Trabeculectomía , Antihipertensivos/uso terapéutico , Glaucoma/tratamiento farmacológico , Glaucoma/epidemiología , Glaucoma/cirugía , Humanos , Presión Intraocular , Terapia por Láser/métodos , Hipertensión Ocular/tratamiento farmacológico , Hipertensión Ocular/epidemiología , Prescripciones , Estudios Retrospectivos , Trabeculectomía/métodos
2.
Opt Lett ; 45(7): 1679-1682, 2020 Apr 01.
Artículo en Inglés | MEDLINE | ID: mdl-32235972

RESUMEN

We model the measured phase function and degree of linear polarization of a macroscopic agglomerate made of micrometer-scale silica spheres using the methodology of multiple scattering. In the laboratory work, the agglomerate is produced ballistically, characterized by scanning electron microscopy, and measured with the $ {\text{PROGRA}^{2}} $PROGRA2 instrument to obtain the light scattering properties. The model phase function and degree of polarization are in satisfactory agreement with the experimental data. To our best knowledge, this is the first time the degree of linear polarization has been modeled well for a large, densely packed agglomerate composed of small particles with known sizes and shapes. The study emphasizes the relevance of the degree of linear polarization and gives insights into the effects of particle aggregation on the scattering characteristics.

3.
J Fr Ophtalmol ; 42(5): 499-516, 2019 May.
Artículo en Inglés | MEDLINE | ID: mdl-30955899

RESUMEN

Spectral domain optical coherence tomography (SD-OCT) provides an objective quantification of the lesions of various target tissue structures in glaucoma, with unprecedented resolution, which has now demonstrated its interest in controlling the progression of glaucomatous neuropathy, from early stages to late stages. A certain number of well-established proofs state that a progressive modification in OCT is a common predictor of functional loss, and that patients with rapid OCT changes have an increased risk of developing glaucomatous scotoma. Follow-up of the progression goes through three stages. It consists first of all in detecting the evolution of damage to the retinal nerve fiber layer (RNFL), then that of the macular ganglion cell complex (GCC), in order to better define this progression of the damage to the target structures and, thirdly, to complete its analysis by integrating it with the analysis of the functional impairment. We note today that there is a greater risk of developing a future functional deficit of the visual field in subjects with a RNFL loss slope greater than -1/year, for all clinical stages of glaucoma. The characteristics of GCC progression are much better specified. Often earlier than that of the progress of the thinning of the RNFL and much faster in the subjects considered as "progressors", its cartography is better defined, with a particular interest for the follow-up of diversion maps and "wide field" acquisitions offering better visibility of deficits and their progression. To date, a certain number of suspicious indicators of short-term progress can be retained, highlighting the essential precaution of having two or more basic measures and a confirmation of the change on at least one new OCT acquisition. Finally, if the interpretation of the progression must always be based on clinical examination data, and the macula in particular, it remains crucial to confront the progression of the RNFL with that of the GCC and with that of the visual field.


Asunto(s)
Glaucoma/diagnóstico , Glaucoma/patología , Tomografía de Coherencia Óptica/métodos , Envejecimiento/patología , Envejecimiento/fisiología , Progresión de la Enfermedad , Humanos , Mácula Lútea/diagnóstico por imagen , Mácula Lútea/patología , Fibras Nerviosas/patología , Disco Óptico/diagnóstico por imagen , Disco Óptico/patología , Células Ganglionares de la Retina/patología , Factores de Tiempo , Campos Visuales
4.
J Fr Ophtalmol ; 40(10): 865-875, 2017 Dec.
Artículo en Francés | MEDLINE | ID: mdl-29174296

RESUMEN

PURPOSE: The Icare® Home tonometer is a new rebound tonometer, developed for intraocular pressure (IOP) self-monitoring. The main objective of our study was to evaluate the reliability and reproducibility of measurements taken with the Icare® Home tonometer in glaucoma patients compared to the Goldmann applanation tonometer. A secondary objective was to investigate factors that could influence the reproducibility of these measurements. MATERIALS AND METHODS: Fifty-two glaucoma patients were included in this prospective, non-randomized, monocentric study. IOP measurements were performed on the right eye and then on the left eye in the following order (3 measurements of IOP for each method): air tonometer (T-Air), Icare® Home tonometer by the patient (RT-P), Icare® Home tonometer by an ophthalmologist (RT-O), Goldmann applanation tonometer (GAT). RESULTS: Forty-four patients (85%) managed to take their IOP on both eyes with the Icare® Home tonometer. Mean IOPs were 14.35±3.93mmHg (T-Air), 13.43±4.65mmHg (RT-P), 14.13±4.29mmHg (RT-O), 14.74±3.84mmHg (GAT). The intraclass correlation indices (ICC) on the 3 repeated IOP measurements were 0.924, 0.872, 0.947 and 0.957, respectively. Bland-Altman analysis found a mean difference (bias) between GAT and RT-P, between GAT and RT-O, and between RT-O and RT-P, respectively, of 1.31, 0.61 and 0.70mmHg, with a 95% confidence interval of -3.34 to 5.96, -3.91 to 5.14 and -3.44 to 4.84mmHg, respectively. The reproducibility of the measurements taken with the Icare® Home tonometer did not vary according to corneal thickness or age of the patients. CONCLUSION: The Icare® Home tonometer provides reliable and reproducible IOP values in glaucoma patients, although it appears to slightly underestimate the IOP measurements compared to the Goldmann applanation tonometer.


Asunto(s)
Glaucoma/diagnóstico , Presión Intraocular , Hipertensión Ocular/diagnóstico , Tonometría Ocular/instrumentación , Tonometría Ocular/métodos , Anciano , Autoevaluación Diagnóstica , Femenino , Glaucoma/fisiopatología , Servicios de Atención de Salud a Domicilio , Humanos , Masculino , Persona de Mediana Edad , Hipertensión Ocular/fisiopatología , Reproducibilidad de los Resultados , Autocuidado , Sensibilidad y Especificidad
5.
J Fr Ophtalmol ; 40(1): 22-28, 2017 Jan.
Artículo en Francés | MEDLINE | ID: mdl-28081918

RESUMEN

PURPOSE: To evaluate the lowering of intraocular pressure (IOP) one year after SLT and to assess if differences are related to number of pre-SLT topical treatments in ocular hypertension (OHT) and primary open angle glaucoma (POAG) patients. METHODS: Retrospective review of 106 eyes of 13 OHT and 93 POAG patients treated by SLT for insufficient IOP control, allergy, discomfort or non-compliance to glaucoma medications, excluding patients with less than 1 year of follow-up after SLT. IOP was measured by applanation before and at 1, 6 and 12 months after SLT. RESULTS: Hundred and six eyes untreated (n=13), or treated with one (n=25), two (n=40) or three or more (n=28) glaucoma medications were included. Mean IOP decreased from 19.4±3.6mmHg preoperatively to 15.7±3.1mmHg at 12 months, which corresponds to an average decrease of 18.8%. At 1 year, 62.2% (n=66) were responders (IOP reduction≥3mmHg): 92.3% without medications (n=12), 68% with one (n=17), 57.5% with two (n=23) and 50% with three or more medications (n=14). Their average IOP decreased from 20.7±3.4 to 15.2±2.9mmHg (26.6%), respectively from 20.8±2.6 to 15.8±3.2 (25%) without medications, 20.6±3.2 to 14.9±3.7 (27.3%) with one, 20.8±4.1 to 15.5±3.3 (25.1%) with two and 20.7±3.2 to 14.4±2.4mmHg (29.7%) with three medications. CONCLUSIONS: The number of responders seems to be greater in OHT and POAG patients without or with few glaucoma medications, but the IOP reduction seems to be similar regardless of the number of glaucoma medications.


Asunto(s)
Antihipertensivos/administración & dosificación , Glaucoma de Ángulo Abierto/tratamiento farmacológico , Glaucoma de Ángulo Abierto/cirugía , Presión Intraocular/efectos de los fármacos , Terapia por Láser/métodos , Hipertensión Ocular/tratamiento farmacológico , Hipertensión Ocular/cirugía , Trabeculectomía/métodos , Administración Tópica , Terapia Combinada , Glaucoma de Ángulo Abierto/fisiopatología , Humanos , Hipertensión Ocular/fisiopatología , Cuidados Preoperatorios/métodos , Periodo Preoperatorio , Estudios Retrospectivos , Resultado del Tratamiento
6.
J Dairy Sci ; 99(6): 4778-4794, 2016 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-27016834

RESUMEN

Lactation performance is dependent on both the genetic characteristics and the environmental conditions surrounding lactating cows. However, individual variations can still be observed within a given breed under similar environmental conditions. The role of the environment between birth and lactation could be better appreciated in cloned cows, which are presumed to be genetically identical, but differences in lactation performance between cloned and noncloned cows first need to be clearly evaluated. Conflicting results have been described in the literature, so our aim was to clarify this situation. Nine cloned Prim' Holstein cows were produced by the transfer of nuclei from a single fibroblast cell line after cell fusion with enucleated oocytes. The cloned cows and 9 noncloned counterparts were raised under similar conditions. Milk production and composition were recorded monthly from calving until 200d in milk. At 67d in milk, biopsies were sampled from the rear quarter of the udder, their mammary epithelial cell content was evaluated, and mammary cell renewal, RNA, and DNA were then analyzed in relevant samples. The results showed that milk production did not differ significantly between cloned and noncloned cows, but milk protein and fat contents were less variable in cloned cows. Furthermore, milk fat yield and contents were lower in cloned cows during early lactation. At around 67 DIM, milk fat and protein yields, as well as milk fat, protein, and lactose contents, were also lower in cloned cows. These lower yields could be linked to the higher apoptotic rate observed in cloned cows. Apoptosis is triggered by insulin-like factor growth binding protein 5 (IGFBP5) and plasminogen activator inhibitor (PAI), which both interact with CSN1S2. During our experiments, CSN1S2 transcript levels were lower in the mammary gland of cloned cows. The mammary cell apoptotic rate observed in cloned cows may have been related to the higher levels of DNA (cytosine-5-)-methyltransferase 1 (DNMT1) transcripts, coding for products that maintain the epigenetic status of cells. We conclude, therefore, that milk production in cloned cows differs slightly from that of noncloned cows. These differences may be due, in part, to a higher incidence of subclinical mastitis. They were associated with differences in cell apoptosis and linked to variations in DNMT1 mRNA. However, milk protein and fat contents were more similar among cloned cows than among noncloned cows.


Asunto(s)
Clonación de Organismos , Transferencia de Embrión/veterinaria , Lactancia , Glándulas Mamarias Animales/citología , Animales , Apoptosis , Bovinos , Células Cultivadas , ADN (Citosina-5-)-Metiltransferasa 1 , ADN (Citosina-5-)-Metiltransferasas/genética , ADN (Citosina-5-)-Metiltransferasas/metabolismo , Grasas de la Dieta/análisis , Epigénesis Genética , Femenino , Proteína 5 de Unión a Factor de Crecimiento Similar a la Insulina/genética , Proteína 5 de Unión a Factor de Crecimiento Similar a la Insulina/metabolismo , Lactosa/análisis , Glándulas Mamarias Animales/metabolismo , Leche/química , Leche/metabolismo , Proteínas de la Leche/análisis , Inactivadores Plasminogénicos/genética , Inactivadores Plasminogénicos/metabolismo , ARN Mensajero/genética , ARN Mensajero/metabolismo
7.
J Fr Ophtalmol ; 39(2): 149-55, 2016 Feb.
Artículo en Francés | MEDLINE | ID: mdl-26856242

RESUMEN

INTRODUCTION: Circumpapillary retinal nerve fiber layer (cpRNFL) analysis by spectral domain optical coherence tomography (SD-OCT) has become essential for the assessment of glaucoma patients. The foveal projection is conventionally below the disc plane, creating an angle with the horizontal meridian, the disc-fovea angle. The purpose of this study is to evaluate the role of adjustment of cpRNFL analysis based on this angle. MATERIALS AND METHODS: This study concerns 40 control eyes and 55 eyes affected with and followed for primary open angle glaucoma (POAG). After precise localization of the optic disc center and the axis connecting it to the center of the fovea, a circular peripapillary scan is performed with Spectralis OCT (Heidelberg Engineering, Germany). The mean thickness in each of six papillary sectors and the global mean thickness of the cpRNFL were evaluated. The ROC (receiver operating characteristic) analysis evaluated the diagnostic capabilities of the various sectors before and after adjustment of the analysis for the disc-fovea angle. RESULTS: The disc-fovea angle was not different between the two groups (-7.0 ± 1.2° for controls vs. -6.6 ± 1.2° for POAG, P=0.70). There is a significant variance of this angle in both groups (the angle varies in the control group between -22.5° to +1.8° and in the POAG group between -18° to +2.4°). The global mean and inferior temporal (IT) thickness of the cpRNFL show the best diagnostic performance. Adjustment for disc-fovea angle does not increase the diagnostic accuracy of the various sectors analyzed. Although there is an increase in the area under the curve for the IT sector after adjustment, it is not statistically significant (0.910 ± 0.056 vs. 0.936 ± 0.045, P=0.06). CONCLUSIONS: There is a significant variation in disc-fovea angle. In this study, accounting for it does not significantly improve the diagnostic capabilities of cpRNFL in patients with POAG.


Asunto(s)
Fóvea Central/diagnóstico por imagen , Glaucoma de Ángulo Abierto/diagnóstico por imagen , Fibras Nerviosas/patología , Disco Óptico/diagnóstico por imagen , Retina/diagnóstico por imagen , Tomografía de Coherencia Óptica/métodos , Anciano , Anciano de 80 o más Años , Calibración , Estudios de Casos y Controles , Femenino , Fóvea Central/patología , Glaucoma de Ángulo Abierto/patología , Humanos , Masculino , Persona de Mediana Edad , Disco Óptico/patología , Proyectos Piloto , Retina/citología , Retina/patología , Neuronas Retinianas/citología , Neuronas Retinianas/patología , Tomografía de Coherencia Óptica/normas , Campos Visuales
8.
Nano Lett ; 16(1): 88-92, 2016 Jan 13.
Artículo en Inglés | MEDLINE | ID: mdl-26599868

RESUMEN

Hole spins in silicon represent a promising yet barely explored direction for solid-state quantum computation, possibly combining long spin coherence, resulting from a reduced hyperfine interaction, and fast electrically driven qubit manipulation. Here we show that a silicon-nanowire field-effect transistor based on state-of-the-art silicon-on-insulator technology can be operated as a few-hole quantum dot. A detailed magnetotransport study of the first accessible hole reveals a g-factor with unexpectedly strong anisotropy and gate dependence. We infer that these two characteristics could enable an electrically driven g-tensor-modulation spin resonance with Rabi frequencies exceeding several hundred mega-Hertz.

9.
J Fr Ophtalmol ; 39(1): 98-106, 2016 Jan.
Artículo en Francés | MEDLINE | ID: mdl-26563842

RESUMEN

Post-traumatic endophthalmitis is a rare but serious complication of open globe injury, representing a major turning point for the patient's visual prognosis. Risk factors for this complication are lens capsule rupture, an intraocular foreign body, type of eye trauma and especially a delay in initial management of the trauma. Although Staphylococcus epidermidis is the most common organism, as in postoperative acute endophthalmitis, other microorganisms are more frequently represented and the multi-microbial involvement is common. The diagnosis can be difficult in the presence of inflammatory signs of trauma. Aside from rapid globe repair, neither preventive nor curative treatment have been well delineated. The class of antibiotics, the dosage, route of administration, as well as surgical treatment by vitrectomy remain topics of discussion.


Asunto(s)
Endoftalmitis/etiología , Lesiones Oculares/complicaciones , Infección de Heridas/etiología , Heridas Penetrantes/complicaciones , Corticoesteroides/administración & dosificación , Corticoesteroides/uso terapéutico , Antibacterianos/administración & dosificación , Antibacterianos/uso terapéutico , Antifúngicos/administración & dosificación , Antifúngicos/uso terapéutico , Coinfección , Terapia Combinada , Vías de Administración de Medicamentos , Endoftalmitis/diagnóstico , Endoftalmitis/microbiología , Endoftalmitis/terapia , Cuerpos Extraños en el Ojo/complicaciones , Infecciones Bacterianas del Ojo/diagnóstico , Infecciones Bacterianas del Ojo/etiología , Infecciones Bacterianas del Ojo/microbiología , Infecciones Bacterianas del Ojo/terapia , Infecciones Fúngicas del Ojo/diagnóstico , Infecciones Fúngicas del Ojo/etiología , Infecciones Fúngicas del Ojo/microbiología , Infecciones Fúngicas del Ojo/terapia , Humanos , Laceraciones/complicaciones , Desprendimiento de Retina/complicaciones , Factores de Riesgo , Infección de la Herida Quirúrgica/microbiología , Infección de la Herida Quirúrgica/terapia , Vitrectomía , Infección de Heridas/microbiología , Infección de Heridas/terapia
11.
J Fr Ophtalmol ; 38(9): 832-43, 2015 Nov.
Artículo en Francés | MEDLINE | ID: mdl-26494495

RESUMEN

PURPOSE: To evaluate intra- and interobserver reproducibility of macular GCC thickness measurement by automated segmentation on the Canon HS-100 SD-OCT (Tokyo, Japan) in normal (N), hypertensive (OHT) and glaucomatous eyes. METHODS: A total of 179 eyes of 93 patients were included: 90 N, 28 OHT and 36 early glaucoma and 25 advanced glaucoma. All patients underwent a complete ophthalmologic exam, central corneal thickness and 24-2 standard automated perimetry (HFA SITA standard). Each of two observers performed three macular acquisitions with the Canon OCT HS-100. Acquisitions were analyzed with the Glaucoma 3D mode, which estimated the macular GCC thickness in global, superior and inferior hemisectors, and in eight separate macular areas. Reproducibility was assessed by intraclass correlation coefficient (ICC), coefficient of variation (CV) and test-retest variability (TRTV) calculated as 1.96 times the standard deviation. RESULTS: Mean GCC thickness was respectively 92.4 µm, 89.0 µm, 80.7 µm and 71.2 µm in N, OHT, early and advanced glaucomatous eyes. In all groups, intra- and interobserver reproducibility ranged respectively for ICC from 89.8 to 99.8% and from 90.2 to 99.4%, for CV from 0.43 to 1.95% and from 0.58 to 2.16% and for TRTV from 0.8 to 3.22 µm and from 1.04 to 3.53 µm. GCC thickness measurements using the new HS-100 SD-OCT were highly reproducible. However, in the advanced glaucoma group, while the reproducibility of GCC thickness measurement is good in the average, superior and inferior hemisectors of the macula, it was slightly less for the paracentral sectors, especially inferior. These sectors correspond generally to the areas most affected by glaucoma. CONCLUSION: The reproducibility of GCC thickness measurements using the new Canon HS-100 SD-OCT is high for normal, OHT, and glaucomatous eyes. It is thus a reliable and reproducible ancillary test available to the clinician for the examination of glaucomatous optic neuropathies.


Asunto(s)
Hipertensión Ocular/patología , Células Ganglionares de la Retina/patología , Tomografía de Coherencia Óptica , Diseño de Equipo , Glaucoma/patología , Humanos , Variaciones Dependientes del Observador , Reproducibilidad de los Resultados , Células Ganglionares de la Retina/citología , Tomografía de Coherencia Óptica/instrumentación
13.
J Fr Ophtalmol ; 38(1): 46-52, 2015 Jan.
Artículo en Francés | MEDLINE | ID: mdl-25575418

RESUMEN

INTRODUCTION: Clinical determination of the outer limits of the optic disk (OD) doesn't always correspond to the true anatomic limits of the optic nerve head (ONH) defined by the Bruch's membrane opening (BMO). A new index analyzing the OD with optical coherence tomography (OCT), "minimal rim width" (BMO-MRW), evaluates the smallest thickness of the neuroretinal rim between the BMO and the internal limiting membrane. The purpose of this study was to evaluate new software for automatic measurement of the BMO-MRW. MATERIALS AND METHODS: This study investigated 95 eyes: 40 control eyes and 55 eyes followed and treated for primary open angle glaucoma (42 early glaucoma, 7 moderate glaucoma and 6 advanced glaucoma). After a precise localization of the OD center, 24 radial scans of the ONH are taken with the Spectralis OCT (Heidelberg Engineering, Germany). From the 48 measurements of BMO-MRW, the mean thickness as well as that in each of the 6 papillary sectors of this new index are calculated. ROC curves analysis (receiver operating characteristic) was used to assess the diagnostic capabilities of the various parameters. RESULTS: Thicknesses of all parameters were statistically lower in glaucoma than in controls. The mean value and inferotemporal sector (IT) had the best diagnostic capabilities without significant difference between them (BMO-MRW-average = 0.890 ± 0.062, BMO-MRW-IT = 0.881 ± 0.066, P = 0.59). The area under the curve was lowest in the temporal sector (0.820 ± 086 statistically lower than the average value, P = 0.04). CONCLUSIONS: This preliminary study of a new automated analysis of the neuroretinal rim highlights the diagnostic value of the BMO-MRW index. This evaluation appears to be best correlated with the anatomy of the ONH with good diagnostic sensitivity.


Asunto(s)
Antropometría/métodos , Lámina Basal de la Coroides/ultraestructura , Disco Óptico/ultraestructura , Tomografía de Coherencia Óptica/métodos , Anciano , Algoritmos , Antropometría/instrumentación , Área Bajo la Curva , Femenino , Glaucoma de Ángulo Abierto/patología , Humanos , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Curva ROC , Sensibilidad y Especificidad , Programas Informáticos , Tomografía de Coherencia Óptica/instrumentación
14.
Urol Case Rep ; 3(6): 193-4, 2015 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-26793549

RESUMEN

We report here the first case of treatment of idiopathic refractory overactive bladder with dopamine. A female patient consulted for urge incontinence. Management included all recommended treatments without success. DAT scan was finally performed showing clear reduction in dopamine secretion without diagnosis of any neurological condition. Patient started dopamine treatment. At 1 month, patient described persistence of mild urgency and frequency but complete resolution of urge incontinence. At 3 months patient was completely dry with only persistence of mild frequency. Functional imaging and central nervous system target might represent new ways of managing idiopathic overactive bladder.

16.
J Fr Ophtalmol ; 37(9): 728-736, 2014 11.
Artículo en Francés | MEDLINE | ID: mdl-25440185

RESUMEN

Several clinical and experimental studies have demonstrated that ocular surface disease is common in glaucoma patients receiving chronic glaucoma drops, and that the preservatives in these drops play a major role in the occurrence of ocular surface disease. These ocular surface changes may induce both symptoms reported by the patients and anterior segment clinical signs, and should be systematically assessed by history and exam in all glaucoma patients. In these patients with ocular surface disease, reducing the amount of preservatives administered to the eye should be strived for, rather than adding additional eye drops to alleviate or mask the side effects of the glaucoma drops.

17.
Placenta ; 35(9): 737-47, 2014 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-25012297

RESUMEN

INTRODUCTION: Alteration of expression of various genes including extracellular matrix components, have been suggested to play major role in the placental pathologies after somatic cloning in mammals. The objectives of the present study were to analyze pattern of expression (mRNA and protein) of the small leucine-rich proteoglycan, Decorin in association with Type I Collagen and Fibronectin in bovine placental tissues from normal and clone pregnancies. METHODS: Genotyping and allelic expression of Decorin were determined by Sanger sequencing. The expression patterns of Decorin, Type I collagen and Fibronectin 1 were analyzed by quantitative RT-qPCR and combined in situ hybydization (ISH) and immunohistochemistry (IHC) in endometrial and placental tissues from D18 to term from artificially inseminated and somatic cloning pregnancies. RESULTS: The expression levels of DCN increased in the AI endometrial stroma and chorionic mesenchyme during implantation and declined during placentome growth until term. Combined ISH and IHC revealed an unexpected discrepancy mRNA and protein tissue distribution. Moreover, Decorin was maintained in the placentome tissues from SCNT pregnancies while both mRNA and protein were absent in AI derived placenta. DISCUSSION: In bovine, the pattern of expression of Decorin exhibits significant changes during placental formation. Downregulation of Decorin is associated with proliferation, remodeling and vascularization of placental tissues. These observations reinforces the putative role of Decorin in these processes. CONCLUSIONS: These observations suggest that Decorin is involved in placental growth and that dysregulation of its expression is associated with placental abnormalities in SCNT derived pregnancy.


Asunto(s)
Clonación de Organismos , Colágeno Tipo I/metabolismo , Decorina/metabolismo , Fibronectinas/metabolismo , Placenta/metabolismo , Animales , Bovinos , Implantación del Embrión , Endometrio/metabolismo , Femenino , Impresión Genómica , Inseminación Artificial , Técnicas de Transferencia Nuclear , Placentación , Embarazo , ARN Mensajero/metabolismo
18.
Med Mal Infect ; 44(5): 217-22, 2014 May.
Artículo en Inglés | MEDLINE | ID: mdl-24787633

RESUMEN

INTRODUCTION: The empiric treatment of acute pyelonephritis (APN) with third generation cephalosporins (3GC) or fluoroquinolones (FQ) has been challenged by Escherichia coli resistance reported by community surveillance networks. But these could overestimate resistance because they do not discriminate between uncomplicated and complicated, or between community and care-related infections. OBJECTIVES: We had for aim to: quantify resistance rates in hospitalized patients presenting with APN; identify subgroups with resistance <10% that could still be treated empirically with FQ or 3GC. PATIENTS AND METHODS: We retrospectively analyzed files of patients presenting with documented APN, hospitalized in an Infectious Diseases Department from October 2010 to December 2012. RESULTS: Hundred and fifty-six female patients (median age: 66, interquartile range: 37), were admitted for uncomplicated APN (36%) or APN (64%) at risk of complications by 1 (46%), 2 (40%), or 3 or more (14%) risk factors. Bacteremia was associated in 44% of uncomplicated and 8% of APN at risk of complications. E. coli was predominant (82%), resistant to 3GC in 6% of patients (including 4% ESBL) and to FQ in 15% of patients. The rate of resistance to FQ increased with the number of risk factors for complication, from 6% in uncomplicated APN, to 25% in patients with ≥3 risk factors. No enterobacteria was resistant to either 3GC or aminoglycosides. CONCLUSION: The resistance rates of 3GC and aminoglycosides were <10% in patients hospitalized for APN. FQ resistance rates reached 15% but only 6% in uncomplicated APN. Hence, FQ empiric regimen should now be restricted to the treatment of uncomplicated APN without severe sepsis.


Asunto(s)
Aminoglicósidos/farmacología , Antibacterianos/farmacología , Cefalosporinas/farmacología , Infección Hospitalaria/tratamiento farmacológico , Farmacorresistencia Bacteriana Múltiple , Infecciones por Enterobacteriaceae/tratamiento farmacológico , Enterobacteriaceae/efectos de los fármacos , Escherichia coli/efectos de los fármacos , Fluoroquinolonas/farmacología , Pielonefritis/tratamiento farmacológico , Enfermedad Aguda , Adulto , Anciano , Aminoglicósidos/uso terapéutico , Antibacterianos/uso terapéutico , Bacteriemia/tratamiento farmacológico , Bacteriemia/epidemiología , Bacteriemia/microbiología , Áreas de Influencia de Salud , Cefalosporinas/uso terapéutico , Estudios de Cohortes , Comorbilidad , Infección Hospitalaria/epidemiología , Infección Hospitalaria/microbiología , Servicio de Urgencia en Hospital/estadística & datos numéricos , Enterobacteriaceae/aislamiento & purificación , Infecciones por Enterobacteriaceae/epidemiología , Infecciones por Enterobacteriaceae/microbiología , Escherichia coli/aislamiento & purificación , Infecciones por Escherichia coli/tratamiento farmacológico , Infecciones por Escherichia coli/epidemiología , Femenino , Fluoroquinolonas/uso terapéutico , Francia/epidemiología , Hospitalización , Hospitales de Enseñanza/estadística & datos numéricos , Hospitales Urbanos/estadística & datos numéricos , Humanos , Institucionalización , Cuidados a Largo Plazo , Persona de Mediana Edad , Ácido Nalidíxico/farmacología , Ofloxacino/farmacología , Pielonefritis/epidemiología , Pielonefritis/microbiología , Estudios Retrospectivos , Factores de Riesgo
19.
J Fr Ophtalmol ; 37(6): 429-33, 2014 Jun.
Artículo en Francés | MEDLINE | ID: mdl-24838026

RESUMEN

We report a rare case of quinine toxicity causing acute bilateral blindness, followed by documented partial recovery within 24 hours. The patient was treated with hyperbaric oxygenotherapy and intravenous nitrates. Visual defects persist after 6 months.


Asunto(s)
Antimaláricos/efectos adversos , Ceguera/inducido químicamente , Ceguera/terapia , Oxigenación Hiperbárica , Quinina/efectos adversos , Enfermedad Aguda , Adulto , Femenino , Humanos , Nimodipina/uso terapéutico , Vasodilatadores/uso terapéutico
20.
Sci Technol Adv Mater ; 15(1): 015001, 2014 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-27877643

RESUMEN

Pulse laser deposited La2/3Sr1/3MnO3 ultrathin films on SrTiO3 substrates were characterized by polar and longitudinal Kerr magneto-optical spectroscopy. Experimental data were confronted with theoretical simulations based on the transfer matrix formalism. An excellent agreement was achieved for a 10.7 nm thick film, while a distinction in the Kerr effect amplitudes was obtained for a 5 nm thick film. This demonstrated the suppression of ferromagnetism due to the layer/substrate interface effects. A revised, depth-sensitive theoretical model with monolayer resolution described the experimental data well, and provided clear cross-section information about the evolution of ferromagnetism inside the film. It was found that the full restoration of the double-exchange mechanism, responsible for the ferromagnetic ordering in La2/3Sr1/3MnO3, occurs within the first nine monolayers of the film. Moreover, all the studied films exhibited magneto-optical properties similar to bulk crystals and thick films. This confirmed a fully developed perovskite structure down to 5 nm.

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