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1.
Schmerz ; 34(5): 421-430, 2020 Oct.
Artículo en Alemán | MEDLINE | ID: mdl-32451747

RESUMEN

The direct comparison of day care pain patients with patients from other treatment sectors with respect to sociodemographic, pain-related and psychological characteristics has not yet been the subject of systematic analyses. The project core documentation and quality assurance in pain therapy (KEDOQ-pain) of the German Pain Society (Deutsche Schmerzgesellschaft e.V.) makes this comparison possible. This second analysis of the available KEDOQ data was intended to show how patients receiving day care treatment can be characterized using the core data set and whether and to what extent they differ from patients receiving outpatient or inpatient treatment. This is a continuation of the first publication, which showed remarkably small differences between outpatients and inpatients but did not include day care patients.The KEDOQ-pain data from 25 centers with a total of 8953 patients were evaluated. Patients had completed the German pain questionnaire (DSF) between January 2012 and March 2017 and received day care (n = 1264), outpatient (n = 4082) or inpatient (n = 3607) pain therapy treatment. Sociodemographic, pain-related and psychometric data of the DSF reported by patients were evaluated as well as physician information on the pain chronification stage and pain localization. The evaluation was descriptive and compared groups using univariate and multivariate procedures.Day care treated patients were significantly younger, had a higher level of education, were more frequently employed, reported higher impairment values and showed a higher severity index according to von Korff than inpatients and outpatients treated for pain. In addition, they described a shorter pain duration as well as worse habitual well-being (Marburg questionnaire on habitual well-being, MFHW). These predictors explained roughly half of the variance in the prediction of the day care treatment setting. The comparison of outpatients and inpatients showed significant group differences for some variables; however, the effects were very small.The evaluations suggest that pain therapy day care facilities treat a special group of pain patients that significantly differ from patients in other treatment sectors. Cautious conclusions are drawn regarding the systematic allocation of patients to care appropriate to their treatment needs.


Asunto(s)
Centros de Día , Pacientes Ambulatorios , Manejo del Dolor , Alemania , Humanos , Pacientes Internos , Dolor
2.
Food Microbiol ; 46: 239-245, 2015 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-25475292

RESUMEN

The main goal of this work was the identification of single nucleotide polymorphisms (SNPs) in the 16S rRNA gene of foodborne Bacillus spp. that may be useful for typing purposes. These species include, among others, Bacillus cereus, an important pathogenic species involved in food poisoning, and Bacillus licheniformis, Bacillus subtilis and Bacillus pumilus, which are causative agents of food spoilage described as responsible for foodborne disease outbreaks. With this purpose in mind, 52 Bacillus strains isolated from culture collections and fresh and processed food were considered. SNP type "Y" at sites 212 and 476 appeared in the majority of B. licheniformis studied strains. SNP type "R" at site 278 was detected in many strains of the B. subtilis/Bacillus amyloliquefaciens group, while polymorphism "Y" at site 173 was characteristic of the majority of strains of B. cereus/Bacillus thuringiensis group. The analysis of SNPs provided more intra-specific information than phylogenetic analysis in the cases of B. cereus and B. subtilis. Moreover, this study describes novel SNPs that should be considered when designing 16S rRNA-based primers and probes for multiplex-PCR, Real-Time PCR and microarray systems for foodborne Bacillus spp.


Asunto(s)
Bacillus/genética , Bacillus/aislamiento & purificación , ADN Bacteriano/genética , Polimorfismo de Nucleótido Simple , ARN Ribosómico 16S/genética , Bacillus/clasificación , Técnicas de Tipificación Bacteriana , Secuencia de Bases , Microbiología de Alimentos , Datos de Secuencia Molecular , Filogenia
3.
Food Microbiol ; 46: 288-298, 2015 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-25475298

RESUMEN

Bacillus genus includes foodborne pathogenic and spoilage-associated species, such as Bacillus cereus, Bacillus licheniformis, Bacillus subtilis and Bacillus pumilus. Bacillus is also a heterogeneous genus that includes closely related species that are difficult to discriminate among, especially when well-conserved genes such as 16S rRNA and 23S rRNA are considered. The main goal of the present work was to study the usefulness of three housekeeping genes, the TU elongation factor (tuf), the DNA gyrase ß subunit (gyrB) and the RNA polymerase ß subunit (rpoB) genes, for use in differentiating among the most important foodborne Bacillus spp. sequences from 20 foodborne isolated Bacillus strains, and sequences belonging to different Bacillus spp. retrieved from the GenBank were analysed. In general terms, gyrB, rpoB and tuf gene regions for the strains considered in this study exhibited interspecific similarities of 57.8%, 67.23% and 77.66% respectively. Novel tufGPF and tufGPR universal primers targeted to the tuf gene were designed and proved to be useful for the amplification of all Bacillus spp considered. In conclusion, the tuf gene can be considered to be a good target for the differential characterisation of foodborne Bacillus species, especially for differentiating B. subtilis and B. cereus from other closely related species.


Asunto(s)
Bacillus/genética , Bacillus/aislamiento & purificación , Proteínas Bacterianas/genética , Enfermedades Transmitidas por los Alimentos/microbiología , Bacillus/clasificación , Técnicas de Tipificación Bacteriana , Microbiología de Alimentos , Humanos , Datos de Secuencia Molecular , Filogenia
4.
Biomed Res Int ; 2014: 156323, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-24818128

RESUMEN

Traditional culturing methods are still commonly applied for bacterial identification in the food control sector, despite being time and labor intensive. Microarray technologies represent an interesting alternative. However, they require higher costs and technical expertise, making them still inappropriate for microbial routine analysis. The present study describes the development of an efficient method for bacterial identification based on flow-through reverse dot-blot (FT-RDB) hybridization on membranes, coupled to the high specific ligation detection reaction (LDR). First, the methodology was optimized by testing different types of ligase enzymes, labeling, and membranes. Furthermore, specific oligonucleotide probes were designed based on the 16S rRNA gene, using the bioinformatic tool Oligonucleotide Retrieving for Molecular Applications (ORMA). Four probes were selected and synthesized, being specific for Aeromonas spp., Pseudomonas spp., Shewanella spp., and Morganella morganii, respectively. For the validation of the probes, 16 reference strains from type culture collections were tested by LDR and FT-RDB hybridization using universal arrays spotted onto membranes. In conclusion, the described methodology could be applied for the rapid, accurate, and cost-effective identification of bacterial species, exhibiting special relevance in food safety and quality.


Asunto(s)
Bacterias/aislamiento & purificación , Microbiología de Alimentos/métodos , Membranas Artificiales , Hibridación de Ácido Nucleico/métodos , Reacción en Cadena de la Polimerasa/métodos , Colodión , Sondas de ADN/metabolismo , Ligasas/metabolismo , Reproducibilidad de los Resultados
5.
Food Microbiol ; 33(2): 235-42, 2013 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-23200657

RESUMEN

The Bacillus genus includes species such as Bacillus cereus, Bacillus licheniformis and Bacillus subtilis, some of which may be pathogenic or causative agents in the spoilage of food products. The main goal of this work was to apply matrix-assisted laser desorption ionisation-time of flight (MALDI-TOF) mass fingerprinting to the classification of these Bacillus species. Genetic analyses were also compared to phyloproteomic analyses. A collection of 57 Bacillus strains isolated from fresh and processed food and from culture collections were studied and their mass spectra compiled. The resulting mass fingerprints were compared and characteristic peaks at the strain and species levels were assigned. The results showed that MALDI-TOF was a good complementary approach to 16S rRNA sequencing and even a more powerful tool in the accurate classification of Bacillus species, especially for differentiating B. subtilis and B. cereus from Bacillus amyloliquefaciens and Bacillus thuringiensis, respectively. MALDI-TOF was also found to provide valuable information at both intra- and interspecies levels in the Bacillus species studied.


Asunto(s)
Bacillus cereus/química , Bacillus subtilis/química , Bacillus/química , Técnicas de Tipificación Bacteriana/métodos , Microbiología de Alimentos , Espectrometría de Masa por Láser de Matriz Asistida de Ionización Desorción/métodos , Bacillus/clasificación , Bacillus/genética , Bacillus/aislamiento & purificación , Bacillus cereus/clasificación , Bacillus cereus/genética , Bacillus cereus/aislamiento & purificación , Bacillus subtilis/clasificación , Bacillus subtilis/genética , Bacillus subtilis/aislamiento & purificación
6.
Food Microbiol ; 30(1): 91-7, 2012 May.
Artículo en Inglés | MEDLINE | ID: mdl-22265288

RESUMEN

Streptococcus parauberis is known as an etiological agent of mastitis in cows and for producing streptococcosis in farmed fish, although its presence in foods has seldom been reported. In this work, two bacterial isolates were recovered from a spoiled vacuum-packaged refrigerated seafood product. Both isolates were identified by 16S rRNA gene sequencing, exhibiting 99% homology with respect to S. parauberis. Both isolates were also characterized by Matrix-Assisted Laser Desorption/Ionization Time-of-Flight Mass Spectrometry (MALDI-TOF MS). Genetic analysis revealed the clonal homogeneity of the isolates and their grouping together with other S. parauberis strains in a different cluster with respect to Streptococcus uberis strains. Proteomic analysis by MALDI-TOF MS allowed for the identification of five mass peaks in the range of 2200-6000 m/z that resulted to be specific to the species S. parauberis and allowed its rapid and direct identification with respect to other pathogenic and spoilage bacteria potentially present in seafood and other food products. This study represents, to our knowledge, the first report of S. parauberis in seafood in general and in vacuum-packed food products in particular. Moreover, it provides a rapid method based on MALDI-TOF MS for the identification of S. parauberis.


Asunto(s)
Contaminación de Alimentos/análisis , Embalaje de Alimentos/métodos , Alimentos Marinos/microbiología , Streptococcus/clasificación , Streptococcus/aislamiento & purificación , Técnicas de Tipificación Bacteriana , ADN Bacteriano/genética , Microbiología de Alimentos/métodos , Genotipo , Fenotipo , Proteómica , ARN Ribosómico 16S/genética , Análisis de Secuencia de ADN , Espectrometría de Masa por Láser de Matriz Asistida de Ionización Desorción/métodos , Streptococcus/genética , Vacio
7.
Int J Food Microbiol ; 151(2): 182-9, 2011 Dec 02.
Artículo en Inglés | MEDLINE | ID: mdl-21925757

RESUMEN

Turbot (Psetta maxima) and blackspot seabream (Pagellus bogaraveo) represent two of the most important emerging farmed fish species in European countries. However, no information of the presence and development of histamine-producing bacteria on them has been reported so far. Accordingly, the aim of this study was to isolate and identify the main histamine-producing bacteria in farmed turbot and blackspot seabream. For this study, 24 isolates (12 from turbot and 12 from blackspot seabream) were preliminarily selected on Niven medium. Two of these isolates were confirmed as prolific histamine producers by HPLC. Thus, Pseudomonas fragi (isolated from turbot) and Pseudomonas syringae (isolated from blackspot seabream) were able to produce 272±69ppm and 173±45ppm of histamine in vitro, respectively, after incubation at 30°C/24h. While turbot fillets proved to be quite resistant to histamine formation at temperatures below 10°C, blackspot seabream fillets inoculated with P. syringae and the prolific histamine former Morganella morganii accumulated 696±84 and 760±59ppm histamine, respectively, under such conditions. Genetic identification based on 16S rRNA sequencing was performed in parallel with the investigation of characteristic mass spectral profiles of the isolates by matrix-assisted laser desorption/ionisation time-of-flight mass spectrometry (MALDI-TOF MS). The MALDI-TOF MS analyses provided species-specific fingerprints, which allow rapid identification and classification of the isolates. Six genus-specific mass peaks in the range of 2218-4434 m/z were shared by both strains. Bacterial identification was achieved by the identification of six species-specific mass peaks in the ranges of 2534-7183 m/z and 2536-9113 m/z for P. fragi and P. syringae, respectively.


Asunto(s)
Peces Planos/microbiología , Histamina/biosíntesis , Morganella morganii/aislamiento & purificación , Pseudomonas/aislamiento & purificación , Dorada/microbiología , Animales , ADN Bacteriano/genética , Datos de Secuencia Molecular , Morganella morganii/clasificación , Morganella morganii/genética , Morganella morganii/metabolismo , Proteoma/análisis , Pseudomonas/clasificación , Pseudomonas/genética , Pseudomonas/metabolismo , ARN Ribosómico 16S/genética , Análisis de Secuencia de ADN , Espectrometría de Masa por Láser de Matriz Asistida de Ionización Desorción
8.
MMW Fortschr Med ; 152 Suppl 4: 125-32, 2011 Jan 13.
Artículo en Alemán | MEDLINE | ID: mdl-21598463

RESUMEN

The objective of this study was to evaluate the benefit of a seven-day buprenorphine transdermal patch for patients with chronic musculoskeletal pain previously receiving long-term treatment with ibuprofen or diclofenac alone. Data of a subgroup of 703 patients were analysed which were part of a multicenter observational study with 3,295 patients. These patients had previously received ibuprofen or diclofenac and were characterized by older age,the presence of gastrointestinal, cardiovascular, and renal risk factors and the existence of chronic musculoskeletal pain. The switch to the seven-day buprenorphine patch resulted in a clinically significant decrease of the mean pain intensity at rest during the day from 5.3 to 2.9, on physical effort during the day from 7.1 to 3.3, and at night from 4.9 to 1.9 at the end of the study (11-point NRS scale, p

Asunto(s)
Analgésicos Opioides/administración & dosificación , Antiinflamatorios no Esteroideos/administración & dosificación , Buprenorfina/administración & dosificación , Diclofenaco/administración & dosificación , Ibuprofeno/administración & dosificación , Dolor/tratamiento farmacológico , Administración Cutánea , Anciano , Anciano de 80 o más Años , Analgésicos Opioides/efectos adversos , Antiinflamatorios no Esteroideos/efectos adversos , Buprenorfina/efectos adversos , Enfermedad Crónica , Diclofenaco/efectos adversos , Esquema de Medicación , Sustitución de Medicamentos , Femenino , Humanos , Ibuprofeno/efectos adversos , Cuidados a Largo Plazo , Masculino , Persona de Mediana Edad , Dimensión del Dolor/efectos de los fármacos , Estudios Prospectivos
9.
Food Microbiol ; 28(3): 605-10, 2011 May.
Artículo en Inglés | MEDLINE | ID: mdl-21356471

RESUMEN

A new primer-probe set for the detection and quantification of Bacillus cereus, Bacillus licheniformis and Bacillus subtilis by real-time PCR (Rti-PCR) was developed. For it, forty-eight strains belonging to these species were considered. The DNA of these strains was isolated and a fragment of the 16S rRNA gene amplified. The amplicons were sequenced and the obtained sequences were aligned with reference sequences from the GenBank. For the development of the Real-Time PCR (RTi-PCR) methodology based on TaqMan probes, a primer pair and probe, specific for the studied Bacillus spp., were designed. To establish the quantification method, two RTi-PCR standard curves were constructed; one with DNA extracted from a serially-diluted B. cereus culture and a second curve with DNA extracted from a sterilised food product inoculated with serial dilutions of B. cereus. The curves exhibited R(2) values of 0.9969 and 0.9958 respectively. Linear correlations between the log(10) input DNA concentration and the threshold cycle (Ct) values were observed with a magnitude of linearity in the range of 1.65 × 10(1) CFU/mL to 1.65 × 10(6) CFU/mL for both standard curves. The specificity of the designed primers and probe was tested with DNA extracted from B. cereus, B. licheniformis and B. subtilis strains, which gave Ct values between 14 and 15, whereas non-specific amplifications of the DNA from other microbial species of food interest exhibited a Ct value above 28.5. To our knowledge, this method represents the first study about the quantification of spoilage and/or pathogenic B. cereus, B. licheniformis and B. subtilis in food products, with the aim to prevent the presence of these undesirable species in the food chain.


Asunto(s)
Bacillus/aislamiento & purificación , ADN Bacteriano/análisis , Contaminación de Alimentos/análisis , Reacción en Cadena de la Polimerasa , Bacillus cereus/aislamiento & purificación , Bacillus subtilis/aislamiento & purificación , Recuento de Colonia Microbiana , Microbiología de Alimentos , Amplificación de Genes , ARN Ribosómico 16S/genética , Alineación de Secuencia , Análisis de Secuencia de ADN , Especificidad de la Especie
10.
J Appl Microbiol ; 107(4): 1392-403, 2009 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-19426265

RESUMEN

AIMS: The characterization of four novel bacteriocin-producing enterococcal strains, isolated from nonfermented animal foods, was carried out with a view to evaluate their potential application as probiotics in raw and processed foodstuffs. METHODS AND RESULTS: 16S rRNA sequencing and random amplification of polymorphic DNA-polymerase chain reaction (RAPD-PCR) analysis allowed the identification and intra-specific grouping of Enterococcus faecium strains, which inhibited the growth of four relevant food-borne pathogenic and spoilage species. Enterococcus faecium strains exhibited remarkable probiotic profiles, being able to survive to pH 3.0 and to the presence of bile salts, pancreatin and pepsin. Enterococcus faecium strains evaluated did not exhibit bile salt hydrolase or haemolytic activity, but showed good adhesion properties, also exhibiting sensitivity to clinically relevant antimicrobial agents. CONCLUSIONS: In our study, DNA sequencing of the 16S rRNA gene and RAPD-PCR analysis were equally discriminatory for typing E. faecium strains. This study also confirmed the potential tolerance and survival of E. faecium strains isolated from nonfermented animal foods to the gastrointestinal tract. SIGNIFICANCE AND IMPACT OF THE STUDY: This study represents the first report on potential probiotic E. faecium strains isolated from nonfermented meat and fish. Their moderate heat resistance opens the way to their potential use as probiotics in minimally processed foods subjected to moderate heat processing.


Asunto(s)
Bacteriocinas/genética , Enterococcus faecium/genética , Enterococcus faecium/aislamiento & purificación , Peces/microbiología , Carne/microbiología , Probióticos/farmacología , Amidohidrolasas/farmacología , Animales , Antibacterianos/farmacología , Bacterias/efectos de los fármacos , Bacterias/crecimiento & desarrollo , Adhesión Bacteriana , Técnicas de Tipificación Bacteriana , Bacteriocinas/aislamiento & purificación , Bovinos , Recuento de Colonia Microbiana , ADN Bacteriano/genética , Enterococcus faecium/efectos de los fármacos , Enterococcus faecium/crecimiento & desarrollo , Contaminación de Alimentos/análisis , Genotipo , Calor , Concentración de Iones de Hidrógeno , Pruebas de Sensibilidad Microbiana , Pancreatina/farmacología , Pepsina A/farmacología , Fenotipo , Probióticos/aislamiento & purificación , ARN Ribosómico 16S/genética , Técnica del ADN Polimorfo Amplificado Aleatorio
13.
Clin Rheumatol ; 21 Suppl 1: S13-6, 2002 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-11954897

RESUMEN

Advanced patch technology has yielded a novel transdermal therapeutic system (TDS) for the rate-controlled systemic delivery of buprenorphine. Buprenorphine TDS is available in three strengths with release rates of 35, 52.5 and 70 microg/h over 72 h, corresponding to daily doses of 0.8, 1.2 and 1.6 mg, respectively. In total, 445 patients with chronic pain of malignant or non-malignant origin requiring long-term treatment with potent opioid analgesics were enrolled in the clinical trial programme. The patients were treated with buprenorphine TDS in one of three dosage strengths or with placebo TDS in a randomised double-blind setting. Greater pain relief was documented in patients treated with buprenorphine TDS than in those treated with placebo. The benefit of buprenorphine TDS was further reflected in the larger number of patients who slept for longer than 6 h per night. Patients switching from Step 2 or Step 3 opioids to buprenorphine TDS encountered no problems with the conversion. Typical opioid-related adverse events were reported with a low incidence and mild intensity. In an open follow-up study 239 patients elected to continue treatment with buprenorphine TDS. The confirmation of clinical benefit, coupled with a high level of patient compliance and improved quality of life, substantiate the usefulness of buprenorphine TDS in a practical setting.


Asunto(s)
Analgésicos Opioides/administración & dosificación , Buprenorfina/administración & dosificación , Dolor/tratamiento farmacológico , Administración Cutánea , Administración Sublingual , Relación Dosis-Respuesta a Droga , Método Doble Ciego , Esquema de Medicación , Femenino , Humanos , Masculino , Dolor/diagnóstico , Dimensión del Dolor , Ensayos Clínicos Controlados Aleatorios como Asunto , Índice de Severidad de la Enfermedad , Resultado del Tratamiento
14.
Headache ; 38(4): 267-9, 1998 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-9595865

RESUMEN

To cater to the special situation of much reduced oral bioavailability which occurs in severe migraine attacks with pronounced nausea and vomiting, sumatriptan can also be used in a subcutaneous form that can be self-administered. The aim of this study was to analyze the practicability and acceptance of a method of self-administration ("Glaxo-Pen") for treatment of severe migraine attacks by subcutaneous injection of sumatriptan. The Glaxo-Pen was compared with the conventional autoinjector for subcutaneous administration of sumatriptan. The multicenter study was conducted under practical conditions by 150 office-based physicians in Germany. Patients who commonly suffered from severe migraine attacks were given a careful explanation of how to use the device ("Glaxo-Pen") for self-administration of subcutaneous sumatriptan and were able to practice using it under guidance. They were given a Glaxo-Pen with two sumatriptan refills to take with them for treating their own migraine attacks. The patients used a headache diary to document administration outside the practice session. A total of 376 patients were included in the study. The major findings were that 80% of the patients rated the Glaxo-Pen "very easy" or "easy" to use, and only 6.4% rated it "difficult" or "very difficult." Compared with the conventional autoinjector, the Glaxo-Pen was rated "much better" or "better" by 77.9% of patients. Only 8.5% considered the Glaxo-Pen "worse" or "much worse" than the conventional autoinjector. The figures show that the great majority of patients found it easy to use sumatriptan for treating severe migraine attacks by self-administration under practical conditions. Thus, especially for patients who suffer from severe nausea, vomiting, or diarrhea during migraine attacks, this method of delivery is an easily used means of arresting migraine attacks.


Asunto(s)
Trastornos Migrañosos/tratamiento farmacológico , Aceptación de la Atención de Salud , Agonistas de Receptores de Serotonina/uso terapéutico , Sumatriptán/uso terapéutico , Adulto , Femenino , Humanos , Inyecciones Subcutáneas/instrumentación , Masculino , Persona de Mediana Edad , Trastornos Migrañosos/psicología , Educación del Paciente como Asunto , Autoadministración , Agonistas de Receptores de Serotonina/efectos adversos , Sumatriptán/efectos adversos
15.
Z Arztl Fortbild Qualitatssich ; 92(1): 47-52, 1998 Jan.
Artículo en Alemán | MEDLINE | ID: mdl-9553213

RESUMEN

The regional application of opioids close to the spinal cord by using pumps induces a pain reduction comparable to the systemic medication of the WHO analgesic ladder. However, this method does not reduce the side effects of these drugs, e.g. nausea, vomiting, dysfunctional bladder emptying, and obstipation. Problems and complications leading to revision surgery and system explantation, respectively, are of more severe importance. Pump explantation occurs in a frequency of 7.3% and revision surgery in a frequency of 6.2%. Catheters and port systems have to be revised in 15% of all cases. Therefore, the indication for this method has to be considered carefully and includes the following criteria: pain of somatic origin, exclusion of mental diseases and psychogenic causes of pain, causal therapy is exhausted, insufficient effects of peripheral analgesics and co-analgesics, oral or transdermal opioids are insufficient despite dosages resulting in side-effects, pain is sensible to opioids, regional application of opioids has been tested effective before implantation.


Asunto(s)
Analgesia Epidural/instrumentación , Analgésicos Opioides/administración & dosificación , Bombas de Infusión Implantables , Dolor/tratamiento farmacológico , Analgesia Epidural/efectos adversos , Analgésicos Opioides/efectos adversos , Humanos , Bombas de Infusión Implantables/efectos adversos , Dolor/etiología , Ensayos Clínicos Controlados Aleatorios como Asunto , Resultado del Tratamiento
17.
Pediatr Transplant ; 1(2): 119-23, 1997 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-10084771

RESUMEN

Several articles have shown inferior renal allograft survival in patients receiving kidneys from young cadaver donors. We therefore assessed the survival and function of the first cadaveric graft from donors aged under 6 years of age, transplanted after 1983. The results were compared with the outcome of children receiving kidneys from older donors. Graft survival and serum creatinine were analyzed retrospectively at various time intervals after first cadaveric transplantation in 35 pediatric recipients of renal transplants grafted between 1983 and 1996 from donors < 6 years of age. Their data were compared with those of 167 pediatric recipients of renal transplants grafted from older donors. The proportion of young donors remained constant throughout the observation period. Mean recipient age was 10.4 years (range 3.2-17.5 years) in the patients grafted from donors < 6 years of age, not much different from the mean age of the donors in the 6+ years group (12.5 years, range 2.3-18.6 years). Five-year patient survival did not differ between the two groups (89 vs. 90%). In 1983-1996, graft survival rate of kidneys from donors aged < 6 years after one year was 77% (donors aged 6+ years=76%), after 2 years 66% (donors aged 6+ years=68%), after 3 years 62% (donors aged 6+ years=66%), and after 5 years 55% (donors aged 6+ years=60%, n.s., Log-rank test). In 1994-1996, 2-year graft survival was 88% (controls 91%, n.s.). In children receiving a cadaveric graft from a donor aged < 6 years, mean serum creatinine fell from 132+/-101 (SD) micromol/l after 3 months to 101+/-66 micromol/l after 12 months, and was 110+/-52 micromol/l after 5 years. This compared with a serum creatinine of 131+/-108 micromol/l after 3 months, 132+/-97 micromol/l after 12 months and 143+/-81 micromol/l after 5 years in children receiving grafts from older donors. When transplanting renal allografts from young donors into children, there was no significant difference in graft survival between donors aged < 6 years and older donors or in graft function. We conclude that good results from young donors can be obtained in a specialized center, and therefore the restriction of kidney selection to donors aged > 6 years may not be justified.


Asunto(s)
Supervivencia de Injerto , Trasplante de Riñón , Donantes de Tejidos , Adolescente , Factores de Edad , Niño , Preescolar , Creatinina/sangre , Humanos , Estudios Retrospectivos , Factores de Tiempo , Resultado del Tratamiento
18.
Dev Dyn ; 204(4): 432-45, 1995 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-8601036

RESUMEN

Type XII collagen, a member of the FACIT group of extracellular matrix proteins, consists of molecules that are trimers of alpha 1(XII) chains. The three chains in each molecule form a cross-shaped structure with a central globule from which a triple-helical tail and three finger-like regions (containing von Willebrand factor A-like regions (containing von Willebrand factor A-like domains and fibronectin type III repeats) extend. cDNA cloning/sequencing of chicken alpha 1(XII) collagen and protein studies with mouse, bovine, and human material suggest that the alpha 1(XII) collagen gene gives rise to two molecular variants, differing in the length of the finger-like regions, by alternative splicing of the primary transcript. To provide a basis for studies of the function of the two variants in an organism that can be genetically manipulated, we have isolated and sequenced mouse cDNAs encoding both splice variants. The sequence provides the first complete nucleotide and amino acid sequence of mammalian type XII collagen. From these cDNAs we have generated digoxigenin-labeled RNA probes for in situ hybridization of developing mouse embryos to find out whether the splicing mechanism responsible for generation of the two forms is developmentally regulated. The results, combined with Northern blot and RT-PCR analysis of RNA from embryos at various developmental stages, demonstrate that the long form of collagen XII, XIIA, is the predominant form at early stages (ED7 and 11); at later stages of development (ED15 and 17) the short form, XIIB, becomes the major form. As the short form becomes the major product, the long splice variant continues to be expressed in several tissues, even after birth. An exception is dermis, which is positive for the long form up to embryonic day 15, but negative at day 18, when only the short form RNA can be detected.


Asunto(s)
Empalme Alternativo/fisiología , Colágeno/genética , Embrión de Mamíferos/fisiología , Secuencia de Aminoácidos , Animales , Secuencia de Bases , Northern Blotting , ADN Complementario/análisis , Regulación del Desarrollo de la Expresión Génica/genética , Hibridación in Situ , Isomerismo , Ratones , Datos de Secuencia Molecular , Análisis de Secuencia de ADN
19.
Exp Cell Res ; 216(1): 191-8, 1995 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-7813620

RESUMEN

At Day 17 of in ovo development, chondrocyte hypertrophy including synthesis of collagen X takes place in a limited region within the cranial part of chick embryo sternum. Here we analyze in suspension culture the differences in response to single growth factors of chondrocytes derived from the cranial part versus cells derived from the caudal part. Cells from either part were cultured separately without serum in the presence of insulin-like growth factor-1, transforming growth factor beta 2, basic fibroblast growth factor, or thyroid hormones. In culture, chondrocytes derived from the cranial part of sterna from 14- to 18-day-old chicken embryos become hypertrophic and initiated the synthesis of collagen X and alkaline phosphatase. These processes were enhanced by anabolic diffusible signals, such as those contained in fetal bovine serum, insulin-like growth factor-1, or thyroxine. Cells derived from the caudal part lack this capacity and, instead, prevented hypertrophy of cranial cells in cocultures, presumably by secreting diffusible signals. As candidate molecules, we have identified transforming growth factor beta 2 and basic fibroblast growth factor, which both were released by chondrocytes. Synergistic action of transforming growth factor beta 2 and basic fibroblast growth factor was required to suppress insulin-like growth factor-1-stimulated maturation of cranial chondrocytes in culture.


Asunto(s)
Cartílago/citología , Factor 2 de Crecimiento de Fibroblastos/farmacología , Factor de Crecimiento Transformador beta/farmacología , Fosfatasa Alcalina/metabolismo , Animales , Sangre , Cartílago/efectos de los fármacos , Diferenciación Celular/efectos de los fármacos , Células Cultivadas , Embrión de Pollo , Colágeno/biosíntesis , Medio de Cultivo Libre de Suero , Sinergismo Farmacológico , Factor I del Crecimiento Similar a la Insulina/farmacología , Esternón , Hormonas Tiroideas/farmacología
20.
Rofo ; 159(5): 461-6, 1993 Nov.
Artículo en Alemán | MEDLINE | ID: mdl-8219141

RESUMEN

A prospective, randomised and double blind comparative study of Midazolam/Tramadol or placebo/Tramadol for premedication before PTA was carried out on 40 patients (12 female and 28 male, average age 66.1 +/- 12). The anxiolytic, analgesic and general findings were quantified by means of a visual analogue score. Pre- and peri-interventional blood gas, blood pressure and pulse rates were determined. The complications of the two schemes were compared. 19 patients received Midazolam/Tramadol and 21 placebo/Tramadol. Patient anxiety was reduced significantly from 25.8 +/- 25 to 4.3 +/- 6 by premedication. Significant increase in the pain score during PTA was observed only in the placebo group (4.3 +/- 12.6 to 27.4 +/- 20.9). There was no difference in the incidence of complications and respiratory depression due to the Midazolam/Tramadol combination was not observed.


Asunto(s)
Angioplastia de Balón , Midazolam/uso terapéutico , Premedicación , Tramadol/uso terapéutico , Anciano , Angioplastia de Balón/estadística & datos numéricos , Análisis de los Gases de la Sangre , Distribución de Chi-Cuadrado , Método Doble Ciego , Quimioterapia Combinada , Femenino , Humanos , Masculino , Midazolam/efectos adversos , Persona de Mediana Edad , Placebos , Premedicación/estadística & datos numéricos , Radiografía Intervencional , Tramadol/efectos adversos
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