Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 163
Filtrar
1.
Pathologie (Heidelb) ; 44(Suppl 3): 193-197, 2023 Dec.
Artículo en Alemán | MEDLINE | ID: mdl-38051339

RESUMEN

In this feasibility study, we carried out in an interdisciplinary team standardised, ultrasound-guided, minimally invasive autopsy (US-MIA) directly at the bedside of patients who died of COVID-19 in the intensive care unit of the Rechts der Isar Hospital of the Technical University Munich (TUM). The aim of the study was to verify the feasibility, time efficiency and infection hygiene aspects of the process, as well as the quality of the tissue samples. Our results show that bedside US-MIA is suitable for obtaining tissue samples before the onset of postmortem autolysis, and that it can also be carried out quickly and safely. The potential of US-MIA, which has gained little recognition so far, deserves special attention in the context of postmortem diagnosis, research and quality assurance. In the future, these strengths of US-MIA could help to lead postmortem diagnosis into the modern age of pathological deep analytics ("omics").


Asunto(s)
COVID-19 , Humanos , Autopsia/métodos , Hospitales Universitarios , Ultrasonografía Intervencional , Unidades de Cuidados Intensivos
2.
Arch Orthop Trauma Surg ; 143(6): 3137-3144, 2023 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-35849186

RESUMEN

INTRODUCTION: Given the absence of a satisfying plate system to deal with multifragmentary or subcapital distal ulnar fractures, the Distal Ulna Locking Plate (DUL, I.T.S. GmbH, Graz, Austria) could become a useful treatment option. This study aimed to evaluate the results of this anatomically pre-contoured plate regarding patients with unstable or displaced distal ulnar fractures. METHODS: In a prospective clinical trial, 20 patients (18 female, two male; mean age 70 years (24-91 years)) with unstable or displaced distal ulna fractures between December 2010 and August 2015 were analyzed. All patients were treated with open reduction and internal fixation using the DUL. They were evaluated at three follow-up appointments at 3, 6 and 12 months postoperatively regarding their bone healing, ulnar variance (UV), range of motion (ROM) and grip strength. Patient related outcomes were measured using the Disability of the Arm, Shoulder and Hand (DASH), the Patient Rated Wrist Evaluation (PRWE) questionnaires, and the Visual Analogue Scale (VAS). The results after one year were compared to the outcome of the healthy contralateral side. RESULTS: All fractures treated with open reduction and internal fixation using the Distal Ulna Locking Plate healed within 6 months and showed stable ulnar variances after surgery. ROM (rotational plane 81.1 ± 9.0°, sagittal plane 55.1 ± 14.6°, frontal plane 33.0 ± 9.4°) and grip strength (18.7 ± 7.1 N) at the follow-up after 12 month had similar values compared with the uninjured side. The mean DASH score (36.4 ± 29.0), the PRWE-score (14.5 ± 27.0), and the VAS (at rest 0.5 ± 1.1, during activity 1.2 ± 2.4) after one year had no significant difference to the uninjured side. The surgeon's overall satisfaction rate regarding plate handling reached 81.8%. CONCLUSION: Stabilization of unstable distal ulna fractures using the DUL restores nearly normal anatomy and function. Its pre-countered design, volar placement, and enhanced stability present a satisfying plate system. TRIAL REGISTRATION:  The trial was retrospectively Registered at www. CLINICALTRIALS: gov on 16 December 2021 (Trial Registration Number: NCT05329012).


Asunto(s)
Fracturas del Radio , Fracturas del Cúbito , Fracturas de la Muñeca , Humanos , Masculino , Femenino , Anciano , Muñeca , Fracturas del Radio/cirugía , Cúbito/cirugía , Fijación Interna de Fracturas/métodos , Fracturas del Cúbito/cirugía , Placas Óseas , Resultado del Tratamiento , Rango del Movimiento Articular
3.
BMC Cardiovasc Disord ; 21(1): 338, 2021 07 13.
Artículo en Inglés | MEDLINE | ID: mdl-34256716

RESUMEN

PURPOSE: Early adoption of a healthy lifestyle has positive effects on cardiovascular health (CVH) in adulthood. In this study, we aimed to assess CVH metrics in a cohort of healthy teenagers with focus on differences between rural and urban areas. METHODS: The Early Vascular Aging (EVA) Tyrol study is a population-based non-randomized controlled trial, which prospectively enrolled 14- to 19-year-old adolescents in North Tyrol, Austria and South Tyrol, Italy between 2015 and 2018. Data from the baseline and control group (prior to health intervention) are included in the current analysis. CVH determinants (smoking, body mass index, physical activity, dietary patterns, systolic and diastolic blood pressure, total cholesterol and fasting blood glucose) were assessed and analyzed for urban and rural subgroups separately by univariate testing. Significant variables were added in a generalized linear model adjusted for living in urban or rural area with age and sex as covariates. Ideal CVH is defined according to the guidelines of the American Heart Association. RESULTS: 2031 healthy adolescents were enrolled in the present study (56.2% female, mean age 16.5 years). 792 adolescents (39.0%) were from urban and 1239 (61.0%) from rural areas. In 1.3% of adolescents living in urban vs. 1.7% living in rural areas all CVH determinants were in an ideal range. Compared to the rural group, urban adolescents reported significantly longer periods of moderate to vigorous-intensive activity (median 50.0 min/day (interquartile range 30-80) vs. median 40.0 min/day (interquartile range 25-60), p < 0.01). This observation remained significant in a generalized linear model (p < 0.01). There were no significant differences between the study groups regarding all other CVH metrics. CONCLUSION: The low prevalence of ideal CVH for adolescents living in urban as well as rural areas highlights the need for early health intervention. Geographic differences must be taken into account when defining targeted subgroups for health intervention programs.


Asunto(s)
Enfermedades Cardiovasculares/epidemiología , Estilo de Vida , Salud Rural , Salud Urbana , Adolescente , Factores de Edad , Austria/epidemiología , Enfermedades Cardiovasculares/diagnóstico , Enfermedades Cardiovasculares/prevención & control , Dieta/efectos adversos , Dislipidemias/epidemiología , Ejercicio Físico , Femenino , Trastornos del Metabolismo de la Glucosa/epidemiología , Estado de Salud , Factores de Riesgo de Enfermedad Cardiaca , Humanos , Hipertensión/epidemiología , Italia/epidemiología , Masculino , Prevalencia , Estudios Prospectivos , Medición de Riesgo , Fumar/efectos adversos , Fumar/epidemiología
4.
J Small Anim Pract ; 62(11): 967-972, 2021 11.
Artículo en Inglés | MEDLINE | ID: mdl-34155659

RESUMEN

OBJECTIVES: Estimation of genetic parameters of lumbosacral transitional vertebrae based on data derived from radiographic screening of 27,597 German shepherd dogs. MATERIALS AND METHODS: Results of radiographic screening for lumbosacral transitional vertebrae classified according to a published scheme were collected. Obtained data were used for estimating variance components in single and multiple trait linear animal models to obtain heritabilities and additive genetic correlations for different types of lumbosacral transitional vertebrae. RESULTS: Estimations indicated a moderate heritability of lumbosacral transitional vertebrae of h2 = 0.27. Trait definitions reflecting the different types of lumbosacral transitional vertebrae revealed positive additive genetic correlations of rg  > 0.5 between those types usually categorised as pathologic. CLINICAL SIGNIFICANCE: Results of comprehensive genetic analyses enable the development of breeding measures against lumbosacral transitional vertebrae to reduce their prevalence and support management of potentially correlated diseases in German shepherd dogs.


Asunto(s)
Enfermedades de los Perros , Vértebras Lumbares , Animales , Enfermedades de los Perros/diagnóstico por imagen , Enfermedades de los Perros/genética , Perros , Antecedentes Genéticos , Vértebras Lumbares/diagnóstico por imagen , Región Lumbosacra/diagnóstico por imagen , Prevalencia
5.
Hand Surg Rehabil ; 40(3): 288-292, 2021 06.
Artículo en Inglés | MEDLINE | ID: mdl-33549698

RESUMEN

The aim of this study was to evaluate the mid-term results of surgically treated scaphoid fractures since we were concerned that good results might deteriorate over time due to osteoarthritis or functional impairment. Thirty-three out of 121 surgically treated patients (isolated scaphoid fractures n = 23; scaphoid fractures with concomitant injuries n = 10) were evaluated retrospectively (47-138 months). Five patients (4%) had a non-union after internal fixation and were excluded because of additional treatment. The remaining 83 patients were not available for a follow-up examination. Patients with an isolated scaphoid fracture had a mean extension-flexion of 68°-0°-64°, a radial-ulnar deviation of 27°-0°-41° and a grip strength of 39 kg (corresponding to 87-98% of the uninjured contralateral wrist), while patients with concomitant injuries had a mean extension-flexion of 60°-0°-44°, radial-ulnar deviation of 22°-0°-38° and a grip strength of 42 kg (corresponding to 73-98% of the uninjured contralateral wrist). The Michigan Hand Questionnaire score was 85 and 75 and the Patient-Rated Wrist Evaluation score was 8 and 21, respectively. Fifteen patients had radiological signs of radiocarpal osteoarthritis with a significantly higher occurrence in those who had concomitant injuries compared to those with isolated scaphoid fractures (p < 0.01). There was no significant group difference in scaphotrapeziotrapezoid (STT) osteoarthritis (p = 0.968). One STT osteoarthritis case occurred after plate fixation, one after antegrade screw fixation and 10 after retrograde screw fixation. Surgical treatment of an acute isolated scaphoid fracture has excellent clinical, functional, and radiologic mid-term results, while scaphoid fractures with concomitant wrist injuries have slightly inferior results.


Asunto(s)
Fracturas Óseas , Hueso Escafoides , Traumatismos de la Muñeca , Estudios de Seguimiento , Fracturas Óseas/diagnóstico por imagen , Fracturas Óseas/cirugía , Humanos , Estudios Retrospectivos , Hueso Escafoides/diagnóstico por imagen , Hueso Escafoides/cirugía
6.
J Hosp Infect ; 105(4): 736-740, 2020 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-32454075

RESUMEN

A survey was conducted in UK regional children's hospitals with paediatric intensive care and paediatric infectious disease (PID) departments to describe the characteristics of paediatric antimicrobial stewardship (PAS) programmes. A structured questionnaire was sent to PAS coordinators. 'Audit and feedback' was implemented in 13 out of 17 centres. Microbiology-led services were more likely to implement antimicrobial restriction (75% vs 33% in PID-led services), to focus on broad-spectrum antibiotics, and to review patients with positive blood cultures. PID-led services were more likely to identify patients from e-prescribing or drug charts and review all antimicrobials. A PAS network has been established.


Asunto(s)
Antibacterianos/uso terapéutico , Programas de Optimización del Uso de los Antimicrobianos , Implementación de Plan de Salud , Hospitales Pediátricos , Pautas de la Práctica en Medicina , Niño , Enfermedades Transmisibles/tratamiento farmacológico , Humanos , Unidades de Cuidado Intensivo Neonatal , Encuestas y Cuestionarios , Reino Unido
7.
Urologe A ; 58(12): 1418-1428, 2019 Dec.
Artículo en Alemán | MEDLINE | ID: mdl-31773181

RESUMEN

BACKGROUND: In Germany, renal tumours are detected earlier also due to advancing technology within ultrasound devices and its more widespread application. Ultrasound diagnosis is usually the first imaging procedure available to urologists. For all renal lesions larger than 1 cm in diameter, fat content can be revealed by quantitative measurements within CT/MRI diagnostic modalities to confirm the suspected diagnosis of angiomyolipoma, or in patients with potentially malignant renal lesions referral (with all the their imaging data) to the multidisciplinary tumour team. As a further step, biopsy may be indicated, especially in the case of inflammatory lesions or suspected lymphoma; otherwise patients with a solid tumour are treated within a tumour stage-appropriate urological therapy regime. RESULTS: Contrast-enhanced ultrasonography (CEUS) is currently unable to distinguish between benign and malignant renal tumours. Nevertheless, this noninvasive method is useful in everyday clinical practice: in excluding renal pseudolesions, in inflammatory lesions, for follow-up of traumatic pseudolesions, and for the differential diagnosis of atypical renal cyst diagnosis versus renal cancer. Contrast-enhanced sonography also reveals the microperfusion of kidney tumors, providing clues for distinguishing between clear cell and papillary types of renal cell carcinoma. The method is also utilised in CEUS-controlled biopsy procedures of renal lesions. CONCLUSIONS: Contrast-enhanced sonography augments CT/MRI imaging with real-time information on the perfusion of the kidney tumour and can be a therapy-relevant aid for the multidisciplinary cancer conference with the ultrasound examinations being presented as video clips for comment thereon.


Asunto(s)
Carcinoma de Células Renales , Neoplasias Renales , Carcinoma de Células Renales/diagnóstico por imagen , Medios de Contraste , Diagnóstico Diferencial , Alemania , Humanos , Neoplasias Renales/diagnóstico por imagen , Ultrasonografía
10.
Radiologe ; 58(6): 553-562, 2018 06.
Artículo en Alemán | MEDLINE | ID: mdl-29767316

RESUMEN

CLINICAL ISSUE: Renal lesions are detected earlier, often as a result of ultrasound examinations. However, the imaging-based differential diagnosis of different tumour entities remains challenging STANDARD RADIOLOGICAL METHODS: All renal tumours >1 cm should be evaluated for malignancy by computed tomography (CT) or magnetic resonance imaging (MRI). If an angiomyolipoma diagnosis cannot be established with imaging, further diagnostics are appropriate or if malignant progression is suspected, then multidisciplinary discussion for TNM-staging based uro-oncologic therapy is usual. METHODICAL INNOVATIONS: Contrast-enhanced ultrasound (CEUS) gives clear information about the microperfusion of renal tumours. PERFORMANCE: CEUS is helpful for the differentiation of renal cysts and especially papillary renal cell carcinomas. Moreover, CEUS advances renal tumour detection compared to B­mode and Doppler ultrasound per se. Cortical pseudolesions may be confidently ruled out using CEUS. ACHIEVEMENTS: Clear differentiation of benign and malignant renal lesions >1 cm remains challenging, and only in rare cases is it possible with CEUS alone. Nevertheless CEUS is, in combination with other ultrasound techniques, eminently suitable for diagnosing focal pyelonephritis, renal abscesses and suspected renal lymphoma and supports the planning of ultrasound-assisted tumour biopsies. PRACTICAL RECOMMENDATIONS: Combining different imaging techniques is essential to accurately diagnose renal tumors. These imaging results (including the ultrasound/CEUS clips) should be viewed by the multidisciplinary cancer tumour board to facilitate individual treatment concepts for each patient.


Asunto(s)
Carcinoma de Células Renales , Neoplasias Renales , Carcinoma de Células Renales/diagnóstico por imagen , Medios de Contraste , Humanos , Riñón , Neoplasias Renales/diagnóstico por imagen , Ultrasonografía
11.
J Dairy Sci ; 101(6): 4801-4821, 2018 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-29525301

RESUMEN

Routine recording of claw health status at claw trimming of dairy cattle has been established in several countries, providing valuable data for genetic evaluation. In this review, we examine issues related to genetic evaluation of claw health; discuss data sources, trait definitions, and data validation procedures; and present a review of genetic parameters, possible indicator traits, and status of genetic and genomic evaluations for claw disorders. Different sources of data and traits can be used to describe claw health. Severe cases of claw disorders can be identified by veterinary diagnoses. Data from lameness and locomotion scoring, activity information from sensors, and feet and leg conformation traits are used as auxiliary traits. The most reliable and comprehensive information is data from regular hoof trimming. In genetic evaluation, claw disorders are usually defined as binary traits, based on whether or not the claw disorder was present (recorded) at least once during a defined time period. The traits can be specific disorders, composite traits, or overall claw health. Data validation and editing criteria are needed to ensure reliable data at the trimmer, herd, animal, and record levels. Different strategies have been chosen, reflecting differences in herd sizes, data structures, management practices, and recording systems among countries. Heritabilities of the most commonly analyzed claw disorders based on data from routine claw trimming were generally low, with ranges of linear model estimates from 0.01 to 0.14, and threshold model estimates from 0.06 to 0.39. Estimated genetic correlations among claw disorders varied from -0.40 to 0.98. The strongest genetic correlations were found among sole hemorrhage (SH), sole ulcer (SU), and white line disease (WL), and between digital/interdigital dermatitis (DD/ID) and heel horn erosion (HHE). Genetic correlations between DD/ID and HHE on the one hand and SH, SU, or WL on the other hand were, in most cases, low. Although some of the studies were based on relatively few records and the estimated genetic parameters had large standard errors, there was, with some exceptions, consistency among studies. Various studies evaluate the potential of various data soureces for use in breeding. The use of hoof trimming data is recommended for maximization of genetic gain, although auxiliary traits, such as locomotion score and some conformation traits, may be valuable for increasing the reliability of genetic evaluations. Routine genetic evaluation of direct claw health has been implemented in the Netherlands (2010); Denmark, Finland, and Sweden (joint Nordic evaluation; 2011); and Norway (2014), and other countries plan to implement evaluations in the near future.


Asunto(s)
Enfermedades de los Bovinos/genética , Bovinos/genética , Enfermedades del Pie/veterinaria , Pezuñas y Garras/crecimiento & desarrollo , Selección Genética , Animales , Cruzamiento , Bovinos/crecimiento & desarrollo , Enfermedades de los Bovinos/fisiopatología , Enfermedades del Pie/genética , Enfermedades del Pie/fisiopatología
12.
J Dairy Sci ; 99(9): 6855-6873, 2016 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-27372587

RESUMEN

Metabolic disorders are disturbances to one or more of the metabolic processes in dairy cattle. Dysfunction of any of these processes is associated with the manifestation of metabolic diseases or disorders. In this review, data recording, incidences, genetic parameters, predictors, and status of genetic evaluations were examined for (1) ketosis, (2) displaced abomasum, (3) milk fever, and (4) tetany, as these are the most prevalent metabolic diseases where published genetic parameters are available. The reported incidences of clinical cases of metabolic disorders are generally low (less than 10% of cows are recorded as having a metabolic disease per herd per year or parity/lactation). Heritability estimates are also low and are typically less than 5%. Genetic correlations between metabolic traits are mainly positive, indicating that selection to improve one of these diseases is likely to have a positive effect on the others. Furthermore, there may also be opportunities to select for general disease resistance in terms of metabolic stability. Although there is inconsistency in published genetic correlation estimates between milk yield and metabolic traits, selection for milk yield may be expected to lead to a deterioration in metabolic disorders. Under-recording and difficulty in diagnosing subclinical cases are among the reasons why interest is growing in using easily measurable predictors of metabolic diseases, either recorded on-farm by using sensors and milk tests or off-farm using data collected from routine milk recording. Some countries have already initiated genetic evaluations of metabolic disease traits and currently most of these use clinical observations of disease. However, there are opportunities to use clinical diseases in addition to predictor traits and genomic information to strengthen genetic evaluations for metabolic health in the future.


Asunto(s)
Cruzamiento , Enfermedades de los Bovinos/epidemiología , Enfermedades de los Bovinos/genética , Enfermedades Metabólicas/veterinaria , Parálisis de la Parturienta/epidemiología , Animales , Bovinos , Femenino , Incidencia , Cetosis/epidemiología , Cetosis/genética , Cetosis/veterinaria , Lactancia , Enfermedades Metabólicas/epidemiología , Enfermedades Metabólicas/genética , Leche/metabolismo , Paridad , Parálisis de la Parturienta/genética , Embarazo
13.
PLoS One ; 10(10): e0139358, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-26436555

RESUMEN

Maternal lineage influences performance traits in horses. This is probably caused by differences in mitochondrial DNA (mtDNA) transferred to the offspring via the oocyte. In the present study, we investigated if reproductive traits with high variability-gestation length and fetal sex ratio-are influenced by maternal lineage. Data from 142 Warmblood mares from the Brandenburg State Stud at Neustadt (Dosse), Germany, were available for the study. Mares were grouped according to their maternal lineage. Influences on the reproduction parameters gestation length and sex ratio of offspring were analyzed by simple and multiple analyses of variance. A total of 786 cases were included. From the 142 mares, 119 were assigned to six maternal lineages with n≥10 mares per lineage, and 23 mares belonged to smaller maternal lineages. The mean number of live foals produced per mare was 4.6±3.6 (±SD). Live foal rate was 83.5%. Mean gestation length was 338.5±8.9 days (±SD) with a range of 313 to 370 days. Gestation length was affected by maternal lineage (p<0.001). Gestation length was also significantly influenced by the individual mare, age of the mare, year of breeding, month of breeding and sex of the foal (p<0.05). Of the 640 foals born alive at term, 48% were male and 52% female. Mare age group and maternal lineage significantly influenced the sex ratio of the foals (p<0.05). It is concluded that maternal lineage influences reproductive parameters with high variation such as gestation length and foal sex ratio in horses. In young primiparous and aged mares, the percentage of female offspring is higher than the expected 1:1 ratio.


Asunto(s)
Caballos/genética , Patrón de Herencia/genética , Preñez/genética , Animales , Tasa de Natalidad , Cruzamiento , Femenino , Caballos/fisiología , Masculino , Edad Materna , Linaje , Embarazo , Estudios Retrospectivos , Razón de Masculinidad
14.
JIMD Rep ; 20: 27-33, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-25614309

RESUMEN

OBJECTIVE: Cerebrovascular abnormalities have been reported in adult patients with Pompe disease. The objective was to study these abnormalities by (1) determining the diameter and mean flow velocity (MFV) of large cerebral arteries and (2) estimating cerebral blood flow (CBF), resistance index (RI) and cerebrovascular reactivity (CVR) as functions of resistance vessels. METHODS: In ten adults with Pompe disease and twenty controls, the diameter, peak systolic (PSV) and end-diastolic velocities (EDV) of arteries supplying the brain were quantified by MR angiography and sonography. MFV, RI and CBF were calculated. CVR in the middle cerebral artery (MCA) was determined by hyperventilation and acetazolamide injection. RESULTS: MR angiography revealed dilation of cerebral arteries predominantly in the posterior circulation. Dilative arteriopathy was found in three patients; two of them showed vertebrobasilar dolichoectasia. Despite of the dilative arteriopathy, the MFV was normal, indicating increased CBF and dilated resistance vessels. RI of all examined arteries and CVR of MCA were normal. CONCLUSION: The data suggest that dilation of small and large cerebral arteries is a common feature in adults with Pompe disease. Increased CBF might be the consequence of dilated resistance vessels. However, dysfunction of resistance vessels was rarely found. SYNOPSIS: In adults with Pompe disease, dilation of small and large cerebral arteries is a common feature and might be associated with increased cerebral blood flow.

15.
Animal ; 9(2): 191-207, 2015 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-25387784

RESUMEN

For several decades, breeding goals in dairy cattle focussed on increased milk production. However, many functional traits have negative genetic correlations with milk yield, and reductions in genetic merit for health and fitness have been observed. Herd management has been challenged to compensate for these effects and to balance fertility, udder health and metabolic diseases against increased production to maximize profit without compromising welfare. Functional traits, such as direct information on cow health, have also become more important because of growing concern about animal well-being and consumer demands for healthy and natural products. There are major concerns about the impact of drugs used in veterinary medicine on the spread of antibiotic-resistant strains of bacteria that can negatively impact human health. Sustainability and efficiency are also increasingly important because of the growing competition for high-quality, plant-based sources of energy and protein. Disruptions to global environments because of climate change may encourage yet more emphasis on these traits. To be successful, it is vital that there be a balance between the effort required for data recording and subsequent benefits. The motivation of farmers and other stakeholders involved in documentation and recording is essential to ensure good data quality. To keep labour costs reasonable, existing data sources should be used as much as possible. Examples include the use of milk composition data to provide additional information about the metabolic status or energy balance of the animals. Recent advances in the use of mid-infrared spectroscopy to measure milk have shown considerable promise, and may provide cost-effective alternative phenotypes for difficult or expensive-to-measure traits, such as feed efficiency. There are other valuable data sources in countries that have compulsory documentation of veterinary treatments and drug use. Additional sources of data outside of the farm include, for example, slaughter houses (meat composition and quality) and veterinary labs (specific pathogens, viral loads). At the farm level, many data are available from automated and semi-automated milking and management systems. Electronic devices measuring physiological status or activity parameters can be used to predict events such as oestrus, and also behavioural traits. Challenges concerning the predictive biology of indicator traits or standardization need to be solved. To develop effective selection programmes for new traits, the development of large databases is necessary so that high-reliability breeding values can be estimated. For expensive-to-record traits, extensive phenotyping in combination with genotyping of females is a possibility.


Asunto(s)
Bovinos/fisiología , Metabolismo Energético , Fertilidad/genética , Carne/normas , Leche/metabolismo , Animales , Cruzamiento , Bovinos/genética , Cambio Climático , Industria Lechera/métodos , Femenino , Genotipo , Glándulas Mamarias Animales/fisiología , Fenotipo
17.
HNO ; 62(3): 202-6, 2014 Mar.
Artículo en Alemán | MEDLINE | ID: mdl-24337357

RESUMEN

BACKGROUND: Sarcomas count among the very rare malignancies of the orbit. Epithelioid sarcomas typically occur in the subcutaneous tissue of younger patients; an affected orbit constitutes a rarity. OBJECTIVES: Only three cases of this extremely rare disease of the orbit, which is associated with marked aggressiveness and a very poor prognosis, have been analysed in the worldwide current literature. PATIENT AND METHODS: We present a case report together with a literature review. A rapidly progressing painful proptosis with visual loss occurred in a 30-year-old patient. Imaging and invasive diagnostic procedures were initiated as a consequence of this. RESULTS: Diagnostic imaging revealed an infiltrative process of the right orbit. Following endonasal decompression of the orbit and probe acquisition, histological and immunohistochemical tests showed the presence of a proximal type epithelioid sarcoma. Therapy consisted of orbit exenteration together with implantation of titanium miniplates for orbital prosthesis. During the course of disease, osseous metastases developed. The patient died during palliative chemotherapy, 14 months after the initial diagnosis. CONCLUSION: Epithelioid sarcomas are extremely rare, difficult to treat tumours in the head and neck region. The associated mortality rates are high. Aggressive surgical therapy with intensive follow-up is recommended. The prognosis depends upon the resection status.


Asunto(s)
Ceguera/etiología , Exoftalmia/etiología , Neoplasias Orbitales/diagnóstico , Sarcoma/diagnóstico , Adulto , Ceguera/diagnóstico , Diagnóstico Diferencial , Exoftalmia/diagnóstico , Humanos , Imagen por Resonancia Magnética , Masculino , Neoplasias Orbitales/complicaciones , Sarcoma/complicaciones
18.
Reprod Domest Anim ; 48 Suppl 1: 2-10, 2013 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-23962210

RESUMEN

Technical advances and development in the market for genomic tools have facilitated access to whole-genome data across species. Building-up on the acquired knowledge of the genome sequences, large-scale genotyping has been optimized for broad use, so genotype information can be routinely used to predict genetic merit. Genomic selection (GS) refers to the use of aggregates of estimated marker effects as predictors which allow improved individual differentiation at young age. Realizable benefits of GS are influenced by several factors and vary in quantity and quality between species. General characteristics and challenges of GS in implementation and routine application are described, followed by an overview over the current status of its use, prospects and challenges in important animal species. Genetic gain for a particular trait can be enhanced by shortening of the generation interval, increased selection accuracy and increased selection intensity, with species- and breed-specific relevance of the determinants. Reliable predictions based on genetic marker effects require assembly of a reference for linking of phenotype and genotype data to allow estimation and regular re-estimation. Experiences from dairy breeding have shown that international collaboration can set the course for fast and successful implementation of innovative selection tools, so genomics may significantly impact the structures of future breeding and breeding programmes. Traits of great and increasing importance, which were difficult to improve in the conventional systems, could be emphasized, if continuous availability of high-quality phenotype data can be assured. Equally elaborate strategies for genotyping and phenotyping will allow tailored approaches to balance efficient animal production, sustainability, animal health and welfare in future.


Asunto(s)
Cruzamiento/métodos , Selección Genética , Animales , Acuicultura , Bovinos/genética , Industria Lechera , Femenino , Técnicas de Genotipaje/veterinaria , Cabras/genética , Caballos/genética , Masculino , Aves de Corral/genética , Sitios de Carácter Cuantitativo/genética , Análisis de Secuencia de ADN , Especificidad de la Especie , Sus scrofa/genética
19.
Animal ; 7(1): 11-21, 2013 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-23031204

RESUMEN

New movement traits reflecting unfavorable movement characteristics were defined on the basis of detailed movement evaluations (DME) of warmblood foals and mares performed in connection with regular breeding events of the Oldenburg horse breeding societies in 2009 and 2010. DME information was available for 3374 foals and 2844 mares and used for correlation analyses with conformation information on 1987 mares from studbook inspections (SBI) in 2009 and performance information on 2758 mares from mare performance tests (MPT) in 2000 to 2008. Analyses of variance revealed few significant differences between scores for SBI and MPT traits in mares without and with indications of imbalance (IMB) in general or specific findings like irregular tail tone or posture (TTP). SBI scores for general impression and development were significantly lower and MPT scores for trot under rider tended to be higher in IMB-positive mares. Genetic parameters were estimated in linear animal models with residual maximum likelihood. Additive genetic correlations and Pearson correlation coefficients between univariately predicted breeding values indicated unfavorable genetic correlations of IMB and TTP with dressage-related conformation and performance traits. For SBI and MPT traits, we found similarities between the correlation patterns for DME traits in foals and mares. The results implied that breeding of dressage horses may benefit from revision of current movement evaluation and consideration of specific movement characteristics.


Asunto(s)
Cruzamiento/métodos , Caballos/fisiología , Postura , Animales , Femenino , Caballos/genética , Modelos Lineales , Movimiento , Fenotipo
20.
J Anim Breed Genet ; 129(5): 390-401, 2012 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-22963360

RESUMEN

Detailed movement evaluations of warmblood foals and mares were performed in connection with regular breeding events of the Oldenburg horse breeding societies in 2009 and 2010. Unfavourable movement characteristics considered indicative for impaired balance were noted by a special judge (SJ) and the regular judges of the breeding events (RJ) and served as the basis for definition of new movement traits. Detailed movement information on 3374 foals and 2844 mares showed that more severe findings like irregular motion pattern in hind legs or irregularity in general motion pattern occurred only sporadically (prevalences of 1-2%). Irregular tail tone or posture was documented for 4% of the foals and 5% of the mares, resulting in prevalences of the comprehensive trait indications of imbalance (IMB) of 6.2% (foals) and 5.5% (mares). Binary coding was used for all traits, and genetic parameters were estimated bivariately in linear animal models with residual maximum likelihood. Comparative analyses between judges revealed that differences between trait definitions of SJ and RJ were larger in the mares than in the foals, but justified combined use of SJ and RJ information in both age groups. Heritability estimates for the movement traits ranged on the original scale from 0.02 to 0.26 in the foals and from 0.03 to 0.12 in the mares, with heritabilities for IMB on the underlying liability scale of 0.46 (foals) and 0.22 (mares). Comparative analyses between age groups indicated that common genetic factors may be responsible for findings of impaired balance in foals and mares. The results implied that horse breeding may benefit from using the early available information on the movement of foals obtained by detailed movement evaluations, although favourable combination of foal and mare data in future genetic evaluations may require refined recording of unfavourable movement characteristics in the adult horses.


Asunto(s)
Marcha/genética , Caballos/genética , Animales , Cruzamiento , Femenino , Caballos/fisiología , Funciones de Verosimilitud , Modelos Lineales , Masculino , Carácter Cuantitativo Heredable
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA