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1.
Ann Pharm Fr ; 80(6): 950-960, 2022 Nov.
Artículo en Francés | MEDLINE | ID: mdl-35231398

RESUMEN

INTRODUCTION: Medication reconciliation at hospital and the shared medication review are two complementary activities for securing the medication management of the elderly patient. We are experimenting with a pharmaceutical care pathway including a support approach to promote continuity between these two activities and the initiation of shared medication review. MATERIALS AND METHODS: An admission and discharge medication reconciliation has been set up in a geriatric follow-up care and rehabilitation service. A drug assessment was also carried out during the hospital stay. Support for community pharmacists following conciliation was provided by phone calls. Medication discrepancies at admission and discharge, pharmaceutical interventions (PI) as well as satisfaction and difficulties encountered by community pharmacists were collected. RESULTS: Thirty-three patients were included in the study. On admission, 33% of patients had an unintentional discrepancy and 15% on discharge. On average 1.15 PI per patient were notified. The support was propounded to 13 pharmacists. Eight pharmacists (62%) accepted it. Among them, 5 (62.5%) had never performed a medication review. Lack of time was the main difficulty encountered by pharmacists. DISCUSSION AND CONCLUSION: Our pathway enables to integrate hospital and primary care activities and specifically support the delicate transition between them. This enables to facilitate the implementation of these activities and to maintain a relevant and secure continuity of pharmaceutical care.


Asunto(s)
Conciliación de Medicamentos , Servicios Farmacéuticos , Humanos , Anciano , Farmacéuticos , Proyectos Piloto , Revisión de Medicamentos , Preparaciones Farmacéuticas
2.
Prog Urol ; 31(12): 709-715, 2021 Oct.
Artículo en Francés | MEDLINE | ID: mdl-33941458

RESUMEN

OBJECTIVE: To examine the impact of positive surgical margins (PSM) after radical prostatectomy (RP) for prostate cancer on oncological results. PATIENTS AND METHODS: We performed a study where all patients who underwent radical prostatectomy between January 2004 and December 2018 for prostate cancer were included. The preoperative, postoperative data and the carcinological results collected were analyzed. Data were analysed using Kaplan-Meier survival analysis and proportional hazards models. RESULTS: A total of 319 patients with a median age of 65 years (IQR : 62-69) were included. The median follow-up was 43.6 months (IQR: 19.4-79.3). The overall rate of PSM was 33.5%. PSM was associated with biochemical recurrence (P<0.001). Overall mortality was not associated with positive margins. A clinical stage> T1c was an independent predictor of PSM on multivariate analysis (P=0.01). CONCLUSION: PSM would increase the risk of biochemical recurrence with no impact on survival. Clinical stage>T1c was an adverse predictor for PSM. LEVEL OF EVIDENCE: 3.


Asunto(s)
Márgenes de Escisión , Neoplasias de la Próstata , Anciano , Humanos , Masculino , Persona de Mediana Edad , Recurrencia Local de Neoplasia/epidemiología , Pronóstico , Próstata , Antígeno Prostático Específico , Prostatectomía , Neoplasias de la Próstata/cirugía
3.
Prog Urol ; 30(12): 639-645, 2020 Oct.
Artículo en Francés | MEDLINE | ID: mdl-32409241

RESUMEN

INTRODUCTION: We aimed to assess the impact of antiplatelet and anticoagulation therapy for patients undergoing HoLEP. METHODS: We performed a study during the learning curve on a consecutive series of patients who underwent HoLEP surgery from 2015 to 2018. The patients were divided into 3 groups: a control group, patients with antiplatelet therapy and patients with anticoagulation therapy. RESULTS: A total of 223 patients underwent HoLEP surgery during this period: 124 in the control group, 63 in the antiplatelet group and 36 in the anticoagulant group. In the anticoagulant group, we observe significant differences with the control group for the catheterization time (2.05 days vs 5.17 days; P<0.001), the hospital length of stay (1.5 nights vs 4.49 nights; P<0.001) and complications (8.9% vs 58%; P<0.001). No difference between the control and antiplatelet groups in terms of catheterization time, hospital length of stay and complications (2.05 days vs 2.68 days; 1.5 nights vs 1.6 nights) but variation in terms of complications and bleeding complications (8.9% vs 21%; P<0,001; 8.1% vs 19%; P<0,001) CONCLUSION: Our study shows that HoLEP is therefore associated with a higher risk of bleeding for patients treated with anticoagulation therapy. Complications increase morbidity with longer catheterization time, hospitalization times and higher transfusion's rates, revision surgery and readmission. LEVEL OF EVIDENCE: 3.


Asunto(s)
Terapia por Láser , Láseres de Estado Sólido , Hiperplasia Prostática , Resección Transuretral de la Próstata , Anticoagulantes/efectos adversos , Humanos , Masculino , Hiperplasia Prostática/cirugía , Estudios Retrospectivos , Resultado del Tratamiento
4.
Prog Urol ; 28(6): 329-335, 2018 May.
Artículo en Francés | MEDLINE | ID: mdl-29705059

RESUMEN

INTRODUCTION: Military people are inapt for presence of urinary stones. In this specific population, the treatment of stones is even more aggressive than for the general population without recommendation. The final decision about aptitude is the responsibility of the military doctor. Whereas, ureteroscopy has its place there and must done by any urologist. METHODS: The purpose of this study was to estimate the results of treatments by ureteroscopy in this population. Success was defined by the complete absence of fragment visualized in the imaging of control operating comment and so the end of the inaptitude time. RESULTS: Between 2009 and 2016, forty-two were treated for ureteral or renal calculi. The population comprises of 93% men, 35 years old on average. The stones were mainly multiple (more 2) and the medium size is 5mm; sixteen (42.9%) was at the left and eight (19%) was bilateral. In 78.8% (78) of the cases there was a stone in renal position whose 50% (39) still at the lower calyx. In total, 5% of the patients were stone-free in 2 sessions on average. The average deadline of inaptitude of the initial consultation in the resumption of work was of 6 months. In 4% of the cases there was a complication operating rank 4. CONCLUSION: This study confirms the feasibility, the weak harmlessness of ureteroscopy and the lesser deadline of inaptitude. Every urologist can treat this specific population. The patient must be informed and accept the treatment because of excluding referential. LEVEL OF EVIDENCE: 4.


Asunto(s)
Aptitud , Competencia Clínica , Medicina Militar , Ureteroscopía , Urolitiasis/cirugía , Adulto , Pruebas de Aptitud , Competencia Clínica/normas , Evaluación Educacional , Femenino , Humanos , Cálculos Renales/cirugía , Masculino , Persona de Mediana Edad , Medicina Militar/educación , Medicina Militar/normas , Personal Militar , Estudios Retrospectivos , Resultado del Tratamiento , Ureteroscopía/educación , Ureteroscopía/métodos , Ureteroscopía/normas , Cálculos Urinarios/cirugía , Adulto Joven
5.
Prog Urol ; 27(1): 38-45, 2017 Jan.
Artículo en Francés | MEDLINE | ID: mdl-27986459

RESUMEN

PURPOSE: To report oncological outcomes of patients with prostate cancer undergoing active surveillance according to SURACAP criteria. METHODS: This multicentric study included patients who were initially treated with active surveillance for localized prostate cancer according to the SURACAP criteria. The duration of active surveillance as well as the causes of discontinuing the protocol and the definitive pathological results of patients who further underwent radical prostatectomy were retrospectively evaluated. The predictors of discontinuing active surveillance were assessed using a univariable Cox Model. In addition, the predictive value of initial MRI was assessed for patients who performed such imagery. RESULTS: Between 2007 and 2013, 80 patients were included, with a median age of 64 years [47-74]. Median follow-up was 52.9 months [24-108]. At 5 years follow-up, 43.4% patients were still under surveillance. Among patients that underwent surgery, 17.8% had an extra-capsular extension. The risk of discontinuing was not significantly greater for patients with tumor size of 2 or 3mm versus 1mm (HR=0.9 [0.46-1.75], P=0.763), 2 positives cores versus 1 (HR=0.98 [0.48-2.02], P=0.967), T2a vs. T1c stage (HR=2.18 [0.77-6.18], P=0.133), increased PSA level (HR=1 [0.96-1.15], P=0.975) or the patient's age (HR=1 [0.93-1.16], P=0.966). Among the 50 patients who performed initial MRI, the results of such imagery was not significantly associated to the risk of discontinuing active surveillance MRI (HR=1.49 [0.63-3.52], P=0.36). CONCLUSION: Although this study reveals a high rate of release from active surveillance at 5 years, the rate of extra-capsular tumors reported in the group of patients that underwent surgery is among the lowest in literature. LEVEL OF EVIDENCE: 4.


Asunto(s)
Neoplasias de la Próstata/terapia , Espera Vigilante , Anciano , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos
6.
Prog Urol ; 25(1): 40-6, 2015 Jan.
Artículo en Francés | MEDLINE | ID: mdl-25310914

RESUMEN

INTRODUCTION: Kidney transplantation is the most suitable of ESRD care. The proportion of obese people is increasing in the general population and patients with kidney impairment. It is important to assess the impact of obesity on surgical complications of kidney transplantation. The aim of this retrospective study was to signify the correlation between obesity and the occurrence of postoperative urological complications during the first year. METHODS: We conducted a retrospective study from March 1999 to December 2009. We conducted a chart review of patients undergoing kidney transplantation. The kidneys were taken from cadaveric donors. Data collected included age, weight, height, preoperative BMI; causal nephropathy, smoking, hypertension, diabetes, anticoagulation therapy. Intraoperative data included operative time (DO), cold ischemia. Urological complications were recorded during the first year after the kidney transplantation (vascular anastomotic strictures, ureterovesical stenosis, lymphorrheas, pyelonephritis, hematoma, wound infection). Statistical analysis consisted of a t-test for independent samples and univariate and multivariate logistic regression for the occurrence of complications. RESULTS: Four hundred and twenty-two patients were transplanted in total. We excluded 20 patients. BMI and duration of surgery patients with complications were significantly different from those of patients with no complications (P=0.016 and P=0.039, respectively). Obese (n=48) had more diabetes (12.5% versus 3.7%, P=0.014), were more often smoking (35.4% versus 22%, P=0.012), had a longer DO (203.64minutes versus 182.46minutes, P=0.006), and complications (62.5% versus 50.28%, P=0.03) than patients with a BMI <30 (n=354). After adjusting for age, smoking, DO, diabetes and BMI showed that only BMI was an independent predictor of the occurrence of postoperative complications with P=0.048 and RR=1.058 [CI: 1 to 1.119]. However, there was no more transplantectomy obese (P=0.911). CONCLUSION: Our study showed that there is a significant risk of surgical complications after kidney transplantation in obese patients. But ultimately, this does not affect graft survival because there are no more transplantectomies or return to dialysis. LEVEL OF EVIDENCE: 5.


Asunto(s)
Trasplante de Riñón , Obesidad/epidemiología , Complicaciones Posoperatorias/epidemiología , Índice de Masa Corporal , Diabetes Mellitus/epidemiología , Femenino , Francia/epidemiología , Supervivencia de Injerto , Humanos , Masculino , Persona de Mediana Edad , Tempo Operativo , Estudios Retrospectivos , Fumar/epidemiología
7.
Prog Urol ; 24(16): 1063-8, 2014 Dec.
Artículo en Francés | MEDLINE | ID: mdl-25257760

RESUMEN

INTRODUCTION: Kidney transplantation is the treatment of choice for ESRD. Several studies have investigated the factors that may affect kidney function at 1 year. The factors mentioned are anemia, hypercholesterolemia, immunosuppressors, etc. We studied the independent predictors of serum creatinine>100µmol/L at 1 year. MATERIALS AND METHODS: We conducted a retrospective study from March 1999 to December 2009. We conducted a chart review of 402 kidney transplant patients. The kidneys were removed from cadaveric donors. Data collected included age, weight, height, preoperative BMI, the causal nephropathy, smoking, hypertension, diabetes, anticoagulation. Intraoperative data included operative time, and cold ischemia. Statistical analysis consisted of a t-test for independent samples comparing the group with a creatinine≤100µmol/L vs>100 group, and univariate and multivariate Cox regression for a serum creatinine>100µmol/L at 1 year and test of correlation between BMI and serum creatinine at 1 year postoperatively. RESULTS: We found a significant difference in BMI and cold ischemia with P=0.008 and P=0.002, respectively. In contrast there was no difference in age, operative time and blood loss, P=0.758, P=0.941 and P=0.963, respectively. Multivariate Cox regression showed that donor age P=0.004 (HR: 1.016 and CI: 1.005-1.027), a recipient age P=0.023 (HR: 0.986 and CI: 0.974-0.998) and BMI P=0.001 (HR: 1.019 and CI: 1.010-1.028) were independent predictors of serum creatinine>100µmol/L at 1 year. The Pearson correlation coefficient r=0.154 (P=0.004) showed a significant correlation between BMI and serum creatinine. CONCLUSION: Our study showed that donor age, recipient age and BMI were independent predictors of renal function>100µmol/L at 1 year. Our results highlight the difficulty of the management of obesity in renal transplant patients. LEVEL OF EVIDENCE: 5.


Asunto(s)
Creatinina/sangre , Terapia de Inmunosupresión , Enfermedades Renales/diagnóstico , Trasplante de Riñón , Obesidad/complicaciones , Adulto , Biomarcadores/sangre , Índice de Masa Corporal , Femenino , Estudios de Seguimiento , Humanos , Terapia de Inmunosupresión/efectos adversos , Enfermedades Renales/sangre , Enfermedades Renales/etiología , Fallo Renal Crónico/cirugía , Trasplante de Riñón/métodos , Masculino , Persona de Mediana Edad , Valor Predictivo de las Pruebas , Estudios Retrospectivos , Factores de Riesgo , Sensibilidad y Especificidad
8.
Nat Genet ; 1(4): 278-83, 1992 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-1302024

RESUMEN

Human genes expressed in interspecific somatic cell hybrids can be cloned specifically by subtractive cDNA hybridization. This approach is based on the observation that cDNA fragments from noncoding segments of mature human transcripts do not form stable heteroduplexes with their rodent homologues under high-stringency hybridization conditions. Thus, small, oligo-dT primed cDNAs from a rat/human hybrid retaining a fragment of human chromosome 17 were enriched for human sequences by hybridization with RNA from a sister clone containing a smaller human chromosome fragment. The enriched probe was used to screen a human cDNA library, and nine expressed genes from within the non-overlap region were obtained. This method should be useful for cloning active human genes from defined chromosome segments.


Asunto(s)
Cromosomas Humanos Par 17 , Células Híbridas/fisiología , Animales , Secuencia de Bases , Línea Celular , Células Cultivadas , Bandeo Cromosómico , Mapeo Cromosómico/métodos , Sondas de ADN , Fibroblastos/citología , Fibroblastos/fisiología , Biblioteca de Genes , Ligamiento Genético , Humanos , Neoplasias Hepáticas Experimentales , Masculino , Ratones , Datos de Secuencia Molecular , Oligodesoxirribonucleótidos , Ratas , Homología de Secuencia de Ácido Nucleico , Tubulina (Proteína)/genética , Células Tumorales Cultivadas
9.
Nat Genet ; 12(2): 174-82, 1996 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-8563756

RESUMEN

Targeted modification of human chromosomal alleles by homologous recombination is a powerful approach to study gene function, but gene targeting in mammalian cells is an inefficient process. In contrast, gene targeting in a chicken pre-B cell line, DT40, is highly efficient. We have transferred human chromosome 11 into DT40 cells by microcell fusion, and find that the resulting hybrids are recombination-proficient. In these cells, targeting efficiencies into the chicken ovalbumin locus were > 90% and into the human beta-globin and Ha-ras loci were 10-15%. These modified human chromosomes can be transferred subsequently to mammalian cells for functional tests. This chromosome shuttle system allows for the efficient homologous modification of human chromosomal genes, and for subsequent phenotypic analyses of the modified alleles in different mammalian cell types.


Asunto(s)
Alelos , Marcación de Gen/métodos , Células Híbridas , Recombinación Genética/genética , Animales , Linfocitos B , Secuencia de Bases , Fusión Celular , Línea Celular , Pollos , Cromosomas Humanos Par 11 , Genes ras/genética , Globinas/genética , Humanos , Leucemia Eritroblástica Aguda , Ratones , Datos de Secuencia Molecular , Ovalbúmina/genética , ARN Mensajero/análisis , Células Tumorales Cultivadas
10.
J Dairy Sci ; 95(4): 1776-83, 2012 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-22459826

RESUMEN

In contrast to endometritis, now diagnosed by cytological examination, the effect of endocervical inflammation on reproductive performance has been inadequately investigated. In this study, endocervical and endometrial cytological specimens were collected from 168 Holstein cows between 21 and 60 days in milk (DIM) to investigate the prevalence of endocervical inflammation and effect on days to conception. Statistical analyses were stratified based on DIM at examination (<35 vs. ≥35 DIM). Endocervical inflammation with ≥5% neutrophils before 35 DIM (disregarding the level of endometrial inflammation) was associated with decreased hazard of pregnancy within 300 DIM (adjusted hazard ratio, 0.4; 95% confidence interval: 0.3-0.8). A decrease in hazard of pregnancy was observed when >6% neutrophils were counted in endometrial smears (adjusted hazard ratio, 0.4; 95% confidence interval: 0.2-0.7). The study suggested an additive effect of combined endocervical and endometrial inflammation on the hazard of pregnancy within 300 DIM. Using the thresholds of 5% neutrophils for the cervix and 6% neutrophils for the uterus, 11% of the cows examined before 35 DIM presented cervicitis only, 13% were affected by endometritis only, and 32% suffered from both endometrial and endocervical inflammation. The presence (absence) of cervicitis was not indicative of the presence (absence) of endometritis. This study showed that in addition to uterine inflammation, endocervical inflammation in early lactation affects conception. Thus, the global evaluation of genital tract health may be more beneficial for reproductive performance than that of endometrial inflammation.


Asunto(s)
Enfermedades de los Bovinos/fisiopatología , Fertilización , Cervicitis Uterina/veterinaria , Animales , Bovinos , Enfermedades de los Bovinos/patología , Endometritis/complicaciones , Endometritis/veterinaria , Femenino , Lactancia , Neutrófilos/patología , Factores de Tiempo , Cervicitis Uterina/complicaciones , Cervicitis Uterina/diagnóstico
11.
J Exp Med ; 171(4): 1301-14, 1990 Apr 01.
Artículo en Inglés | MEDLINE | ID: mdl-1969921

RESUMEN

The presence of positionally conserved amino acid residues suggests that the mouse proteins TCA3, P500, MIP1-alpha, MIP1-beta, and JE are members of a single gene family. These proteins are activation specific and can be expressed by both myeloid and lymphoid cells. MIP1-alpha/MIP1-beta and MCAF (the putative human homologue of JE) act as chemotactic and activating agents for neutrophils and macrophages, respectively. The functions of TCA3 and P500 are unknown. We have used interspecies somatic cell hybrids and recombinant inbred mouse strains to show that the genes encoding TCA3, MIP1-alpha, MIP1-beta, and JE (provisionally termed Tca3, Mip-1a, Mip-1b, and Sigje, respectively) map as a cluster on the distal portion of mouse chromosome 11 near the Hox-2 gene complex. DNA sequence analysis indicates that the P500 and TCA3 proteins are encoded by alternative splicing products of one genomic gene. Additionally, the genes encoding TCA3 and JE are found to be strikingly similar with respect to the positions of intron-exon boundaries. Together, these data support the model that the cytokines TCA3, P500, MIP1-alpha, MIP1-beta, and JE are encoded by a single cluster of related genes. The gene encoding IL-5 (Il-5), which acts as a T cell-replacing factor, a B cell growth factor, and an eosinophil differentiation factor, is also mapped to mouse chromosome 11.Il-5 maps approximately 25 cM proximal to the Tca-3 gene and appears tightly linked to a previously described gene cluster that includes Il-3, Il-4, and Csfgm. We discuss the potential relevance of the two cytokine gene clusters described here with particular attention to specific human hematologic malignancies associated with chromosomal aberrations at corresponding locations on human chromosomes 5 and 17.


Asunto(s)
Factores Biológicos/genética , Mapeo Cromosómico , Genes , Familia de Multigenes , Secuencia de Aminoácidos , Animales , Secuencia de Bases , Southern Blotting , Línea Celular , Citocinas , ADN/genética , ADN/aislamiento & purificación , Sondas de ADN , Exones , Ligamiento Genético , Células Híbridas/metabolismo , Intrones , Ratones , Ratones Endogámicos BALB C , Ratones Endogámicos , Datos de Secuencia Molecular , Polimorfismo de Longitud del Fragmento de Restricción , Ratas , Homología de Secuencia de Ácido Nucleico , Especificidad de la Especie
12.
Mol Cell Biol ; 27(15): 5286-95, 2007 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-17526725

RESUMEN

The human serine protease inhibitor (serpin) gene cluster at 14q32.1 comprises 11 serpin genes, many of which are expressed specifically in hepatic cells. Previous studies identified a locus control region (LCR) upstream of the human alpha1-antitrypsin (alpha1AT) gene that is required for gene activation, chromatin remodeling, and histone acetylation throughout the proximal serpin subcluster. Here we show that the LCR interacts with multiple liver-specific transcription factors, including hepatocyte nuclear factor 3beta (HNF-3beta), HNF-6alpha, CCAAT/enhancer binding protein alpha (C/EBPalpha), and C/EBPbeta. RNA polymerase II is also recruited to the locus through the LCR. Nongenic transcription at both the LCR and an upstream regulatory region was detected, but the deletion of the LCR abolished transcription at both sites. The deletion of HNF-3 and HNF-6 binding sites within the LCR reduced histone acetylation at both the LCR and the upstream regulatory region and decreased the transcription of the alpha1AT, corticosteroid binding globulin, and protein Z-dependent protease inhibitor genes. These results suggest that the LCR activates genes in the proximal serpin subcluster by recruiting liver-specific transcription factors and components of the general transcription machinery to regulatory regions upstream of the alpha1AT gene.


Asunto(s)
Regulación de la Expresión Génica , Hígado/metabolismo , Región de Control de Posición/genética , ARN Polimerasa II/metabolismo , Serpinas/genética , Factores de Transcripción/metabolismo , Acetilación , Animales , Sitios de Unión , Pollos , Cromatina/metabolismo , Cromosomas Humanos/genética , Factor Nuclear 3-beta del Hepatocito/metabolismo , Factor Nuclear 6 del Hepatocito/metabolismo , Histonas/metabolismo , Humanos , Unión Proteica , Ratas , Eliminación de Secuencia , Transcortina/genética , Transcripción Genética , Activación Transcripcional , alfa 1-Antitripsina/genética
13.
Ann Chir Plast Esthet ; 55(2): 159-61, 2010 Apr.
Artículo en Francés | MEDLINE | ID: mdl-19269730

RESUMEN

Necrosis of the penis glans is commonly described after circumcision or strangulation. We report the case of a patient, opioid abuser, who presented an isolated glans necrosis after an injection of buprenorphin. The buprenorphin (Subutex) is a sublingual partial mu-opioid agonist used for the treatment of heroin dependance. Its intravenous or subcutaneous abuse is associated with local infection. The patient require a surgical intervention. After the failure of a mucosal graft, a soft skin graft was done.


Asunto(s)
Buprenorfina/efectos adversos , Trastornos Relacionados con Cocaína , Dependencia de Heroína , Antagonistas de Narcóticos/efectos adversos , Pene/efectos de los fármacos , Adulto , Buprenorfina/administración & dosificación , Trastornos Relacionados con Cocaína/rehabilitación , Estudios de Seguimiento , Dependencia de Heroína/rehabilitación , Humanos , Inyecciones Subcutáneas , Masculino , Antagonistas de Narcóticos/administración & dosificación , Necrosis , Pene/cirugía , Reoperación , Trasplante de Piel , Infección de la Herida Quirúrgica/etiología , Infección de la Herida Quirúrgica/cirugía , Cicatrización de Heridas/fisiología
14.
Science ; 153(3741): 1250-2, 1966 Sep 09.
Artículo en Inglés | MEDLINE | ID: mdl-17754249

RESUMEN

Observations have been made on two cruises in the North Atlantic in which large numbers of microscopic, unicellular flagellates have been found throughout the aphotic zone below 1000 meters. Preliminary measurements also indicate the uptake of dissolved organic substances, suggestive of an apparently viable, actively metabolizing community at these depths.

15.
Science ; 221(4612): 766-9, 1983 Aug 19.
Artículo en Inglés | MEDLINE | ID: mdl-6879174

RESUMEN

Cloned myosin heavy chain DNA probes from rat and human were hybridized to restriction endonuclease digests of genomic DNA from somatic cell hybrids and their parental cells. The mouse myosin heavy chain genes detectable by this assay were located on chromosome 11, and three different human sarcomeric myosin heavy chain genes were mapped to the short arm of chromosome 17. A synteny between myosin heavy chain and two unrelated markers, thymidine kinase and galactokinase, was found to be preserved in the rodent and human genomes.


Asunto(s)
Miosinas/genética , Animales , Evolución Biológica , Mapeo Cromosómico , Cromosomas Humanos 16-18 , Genes , Ligamiento Genético , Humanos , Ratones
16.
Science ; 270(5237): 815-9, 1995 Nov 03.
Artículo en Inglés | MEDLINE | ID: mdl-7481774

RESUMEN

The human beta-globin locus control region (LCR) controls the transcription, chromatin structure, and replication timing of the entire locus. DNA replication was found to initiate in a transcription-independent manner within a region located 50 kilobases downstream of the LCR in human, mouse, and chicken cells containing the entire human beta-globin locus. However, DNA replication did not initiate within a deletion mutant locus lacking the sequences that encompass the LCR. This mutant locus replicated in the 3' to 5' direction. Thus, interactions between distantly separated sequences can be required for replication initiation, and factors mediating this interaction appear to be conserved in evolution.


Asunto(s)
Replicación del ADN , Globinas/genética , Secuencias Reguladoras de Ácidos Nucleicos , Animales , Secuencia de Bases , Evolución Biológica , Línea Celular , Pollos , Humanos , Células Híbridas , Ratones , Datos de Secuencia Molecular , Eliminación de Secuencia , Células Tumorales Cultivadas
17.
Science ; 244(4908): 1087-8, 1989 Jun 02.
Artículo en Inglés | MEDLINE | ID: mdl-2543077

RESUMEN

Balanced translocations, each involving chromosome 17q11.2, have been described in two patients with von Recklinghausen neurofibromatosis (NF1). To better localize the end points of these translocation events, and the NF1 gene (NF1) itself, human cosmids were isolated and mapped in the immediate vicinity of NF1. One cosmid probe, c11-1F10, demonstrated that both translocation breakpoints, and presumably NF1, are contained within a 600-kilobase Nru I fragment.


Asunto(s)
Mapeo Cromosómico , Cromosomas Humanos Par 17 , Neurofibromatosis 1/genética , Translocación Genética , Animales , Cósmidos , Enzimas de Restricción del ADN , Desoxirribonucleasas de Localización Especificada Tipo II , Electroforesis , Ligamiento Genético , Humanos , Células Híbridas , Ratas
18.
J Theor Biol ; 250(3): 424-34, 2008 Feb 07.
Artículo en Inglés | MEDLINE | ID: mdl-18037447

RESUMEN

Animal displacement plays a central role in many ecological questions. It can be interpreted as a combination of components that only depend on the animal (for example a random walk) and external influences given by the heterogeneity of the environment. Here we treat the case where animals switch between random walks in a homogeneous 2D environment and its 1D boundary, combined with a tendency for wall-following behaviour (thigmotactism) that is treated as a Markovian process. In the first part we use mesoscopic techniques to derive from these assumptions a set of partial differential equations (PDE) with specific boundary conditions and parameters that are directly given by the individual displacement parameters. All assumptions and approximations made during this derivation are rigorously validated for the case of exploratory behaviour of the ant Messor sanctus. These PDE predict that the stationary density ratio between the 2D (centre) and 1D (border) environment only depends on the thigmotactic component, not on the size of the centre or border areas. In the second part we test this prediction with the same exploratory behaviour of M. sanctus, in particular when many ants move around simultaneously and may interact directly or indirectly. The prediction holds when there is a low degree of heterogeneity (simple square arena with straight borders), the collective behaviour is "simply" the sum of the individual behaviours. But this prediction breaks down when heterogeneity increases (obstacles inside the arena) due to the emergence of pheromone trails. Our approach may be applied to study the effects of animal displacement in any environment where the animals are confronted with an alternation of 2D space and 1D borders as for example in fragmented landscapes.


Asunto(s)
Hormigas/fisiología , Conducta Animal , Modelos Biológicos , Actividad Motora/fisiología , Animales , Ecosistema , Conducta Exploratoria , Densidad de Población
19.
J Mal Vasc ; 33(2): 101-5, 2008 May.
Artículo en Francés | MEDLINE | ID: mdl-18456444

RESUMEN

Arterio-ureteral fistula is a rare condition difficult to diagnose. The usual presentation associates acute paroxysmal hematuria with well-identified history and risk factors. We report the case of an 84-year-old man with a life-threatening complication of an ilio-ureteral fistula complicating an anastomotic iliac pseudoaneurysm after prothetic iliofemoral surgery, due to a fungic infection by Candida. After reporting the clinical case and the emergency surgical treatment, we present a review of the literature.


Asunto(s)
Aneurisma Falso/complicaciones , Aneurisma Falso/microbiología , Candidiasis/complicaciones , Arteria Ilíaca , Enfermedades Ureterales/complicaciones , Fístula Urinaria/complicaciones , Anciano de 80 o más Años , Aneurisma Falso/diagnóstico , Resultado Fatal , Humanos , Arteria Ilíaca/cirugía , Masculino , Tomografía Computarizada por Rayos X , Enfermedades Ureterales/diagnóstico , Enfermedades Ureterales/cirugía , Fístula Urinaria/diagnóstico , Fístula Urinaria/cirugía
20.
Mol Cell Biol ; 9(7): 2837-46, 1989 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-2571076

RESUMEN

Somatic cell hybrids formed by fusing hepatoma cells with fibroblasts generally fail to express liver functions, a phenomenon termed extinction. Previous studies demonstrated that extinction of the genes encoding tyrosine aminotransferase, phosphoenolpyruvate carboxykinase, and argininosuccinate synthetase is mediated by a specific genetic locus (TSE1) that maps to mouse chromosome 11 and human chromosome 17. In this report, we show that full repression of these genes requires a genetic factor in addition to TSE1. This conclusion is based on the observation that residual gene activity was apparent in monochromosomal hybrids retaining human TSE1 but not in complex hybrids retaining many fibroblast chromosomes. Furthermore, TSE1-repressed genes were hormone inducible, whereas fully extinguished genes were not. Analysis of hybrid segregants indicated that genetic loci required for the complete repression phenotype were distinct from TSE1.


Asunto(s)
Argininosuccinato Sintasa/genética , ADN/efectos de los fármacos , Hormonas/fisiología , Ligasas/genética , Fosfoenolpiruvato Carboxiquinasa (GTP)/genética , Secuencias Reguladoras de Ácidos Nucleicos , Tirosina Transaminasa/genética , Animales , Northern Blotting , Bucladesina/farmacología , Cromosomas Humanos Par 17 , AMP Cíclico/fisiología , Cicloheximida/farmacología , ADN/genética , Sondas de ADN , Dexametasona/farmacología , Fibroblastos/metabolismo , Técnica del Anticuerpo Fluorescente , Humanos , Células Híbridas , Hígado/citología , Hígado/metabolismo , ARN Mensajero/biosíntesis , ARN Mensajero/genética , Ratas
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