Radiology Case Reports Volume I, Issue 4, 2006 Dissociation of a Bipolar Prosthesis after Right Hip

We report the case of an 84-year-old woman with a dissociated bipolar component of her right hip hemiarthroplasty. Dissociation of components is a rare but increasingly recognized consequence of modular componentry. Radiologists should be aware of the distinction between dislocation of a prosthesis and dissociation of its bipolar components, and be able to describe these complications accurately in their interpretations. Case Report We report the case of an 84-year-old woman who fell, resulting in a fracture of her right femoral neck. This fracture was treated with placement of a bipolar hemiarthroplasty. Two weeks later, a routine post-operative radiograph demonstrated an abnormal appearance of her arthroplasty, despite no history of hip pain, leg numbness, or weakness. Initial right hip radiographs demonstrated dissociation of the components of the bipolar hemiarthroplasty, with inferomedial displacement of the acetabular cup component, and with the prosthetic femoral head abutting the roof of the acetabulum (Figure 1). There was no evidence of fracture or loosening of the femoral component of the prosthesis. The patient underwent successful conversion to total hip replacement and had an uneventful postoperative course. Discussion Although interpositional hip arthroplasty was first performed in the 1800's (1), it did not become commonplace, Citation: Grauke LJ, Richardson ML. Dissociation of a bipolar prosthesis after right hip hemiarthroplasty. Radiology Case Reports. [Online] 2006;1:55. Copyright: © Luke J. Grauke. This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs 2.5 License, which permits reproduction and distribution, provided the original work is properly cited. Commercial use and derivative works are not permitted. Abbreviations: THA, total hip arthroplasty Luke J. Grauke (Email

Influence of Geographical Orchard Location on the Microbiome from the Progeny of a Pecan Controlled Cross

Carya illinoinensis (Wangenh.) K.Koch production has expanded beyond the native distribution as the genetic diversity of the species, in part, has allowed the trees to grow under broad geographic and climatic ranges. Research in other plant species has demonstrated that the phytobiome enhances their ability to survive and thrive in specific environments and, conversely, is influenced by the prevailing environment and plant genetics, among other factors. We sought to analyze the microbiota of pecan seedlings from the controlled cross ‘Lakota’ × ‘Oaxaca’ that were made in Georgia and Texas, respectively, to determine if the maternal geographical origin influences the microbiome of the resulting progeny. No significant differences in bacterial communities were observed between the seeds obtained from the two different states (p = 0.081). However, seed origin did induce significant differences in leaf fungal composition (p = 0.012). Results suggest that, in addition to some environmental, epigenetics, or host genetic components, ecological processes, such as dispersal mechanisms of the host, differentially impact the pecan microbiome, which may have ramifications for the health of trees grown in different environments. Future studies on the role of the microbiome in plant health and productivity will aid in the development of sustainable agriculture for improved food security

Microrganismos associados a frutos de diferentes cultivares de noz Pecan Microorganisms associated with fruits of different cultivars of Pecan nut

O conhecimento do comportamento natural da nogueira Pecan às principais doenças é de suma importância para o estabelecimento do planejamento da implantação da cultura. O controle fitossanitário e tratos culturais devem ser realizados de modo a não comprometerem a qualidade do produto final, as amêndoas. Foram avaliadas nozes produzidas na safra de 2005 e oriundas de Uraí-PR, pelas cultivares Burkett, Frotscher e Moneymaker, para identificar e quantificar os microrganismos associados à amêndoas e cascas dos frutos, bem como observar diferenças entre organismos colonizadores das cultivares. Os frutos foram avaliados na pós-colheita, aos trinta dias de armazenamento em ambiente, através da metodologia do papel de filtro, sendo submetidos ou não à assepsia superficial. O fungo Cladosporium caryigenum, promotor da rancificação das amêndoas foi observado, em amêndoas e cascas, nas cultivares Burkett, Frotscher e Moneymaker; Fusarium sp., foi encontrado em porcentuais elevados, tanto em amêndoas quanto em cascas das três cultivares estudadas; Cephalothecium roseum, causador do mofo róseo em amêndoas, na cultivar Frotscher. Aspergillus sp. e Penicillium sp., causadores de emboloramento e produtores de aflotoxinas foram observados em porcentuais representativos, em amêndoas da cultivar Frotscher e em amêndoas e cascas das cultivares Frotscher, Burkett e Moneymaker, respectivamente. Os maiores porcentuais de perda do rendimento foram observados na cultivar Burkett, por causa da incidência de Colletotrichum sp., causador da antracnose em amêndoas, que acarreta escurecimento e deterioração do produto final, levando-o ao descarte.<br>The knowledgement of the natural behavior of the main diseases of Pecan nut is of utmost importance for the stablishment of an implantation plan for that culture. The phytosanitary control and cultural treatments should be performed in order not to change the quality of the final product. Nuts harvest in 2005 from Uraí-PR of Burkett, Frotscher and Moneymaker cultivars, were evaluated in order to identify and quantify associated microorganisms in the nuts and fruit cover, as well to observe the differences among the microorganisms that colonize the different cultivars. The fruits were evaluated at post-harvest, thirty days kept in natural temperature, through filter paper method, being submitted or not to surface assepsy. The fungi Cladosporium caryigenum, rancification promoter to the almonds was observed on almonds and covers on the cultivars Burkett, Frotscher and Moneymaker; Fusarium sp., was observed in high concentration, on almonds as well as on the cover of all the studied cultivars; Cephalothecium roseum, responsible for the pink mildew, in almonds in the Frotscher cultivar. Aspergillus sp. and Penicillium sp., responsible for mold and aflatoxins formation, were observed in high amount on almonds of the Frotscher cultivar and in almonds and cover of Frotscher, Burkett and Moneymaker, respectively. The highest percentage of loss in yield was observed on the Burkett cultivar, cause of the incidence of Colletotrichum sp., agent responsible for antracnosis on the almonds which provokes causer darkness and deterioration of final product, leading it to discarding

Comparative transcriptome analyses reveal insights into catkin bloom patterns in pecan protogynous and protandrous cultivars.

In perennial plants such as pecan, once reproductive maturity is attained, there are genetic switches that are regulated and required for flower development year after year. Pecan trees are heterodichogamous with both pistillate and staminate flowers produced on the same tree. Therefore, defining genes exclusively responsible for pistillate inflorescence and staminate inflorescence (catkin) initiation is challenging at best. To understand these genetic switches and their timing, this study analyzed catkin bloom and gene expression of lateral buds collected from a protogynous (Wichita) and a protandrous (Western) pecan cultivar in summer, autumn and spring. Our data showed that pistillate flowers in the current season on the same shoot negatively impacted catkin production on the protogynous 'Wichita' cultivar. Whereas fruit production the previous year on 'Wichita' had a positive effect on catkin production on the same shoot the following year. However, fruiting the previous year nor current year pistillate flower production had no significant effect on catkin production on 'Western' (protandrous cultivar) cultivar. The RNA-Seq results present more significant differences between the fruiting and non-fruiting shoots of the 'Wichita' cultivar compared to the 'Western' cultivar, revealing the genetic signals likely responsible for catkin production. Our data presented here, indicates the genes showing expression for the initiation of both types of flowers the season before bloom