One of the most common hereditary craniofacial anomalies in humans are cleft lip and cleft alveolar bone with or without cleft palate. Current clinical practice, the augmentation of the persisting alveolar bone defect by using autologous bone grafts, has considerable disadvantages motivating to an intensive search for alternatives. We developed a novel therapy concept based on 3D printing of biodegradable calcium phosphate-based materials and integration of osteogenic cells allowing fabrication of patient-specific, tissue-engineered bone grafts. Objective of the present study was the in vivo evaluation of implants in a rat alveolar cleft model. Scaffolds were designed according to the defect’s geometry with two different pore designs (60° and 30° rotated layer orientation) and produced by extrusion-based 3D plotting of a pasty calcium phosphate cement. The scaffolds filled into the artificial bone defect in the palate of adult Lewis rats, showing a good support. Half of the scaffolds were colonized with rat mesenchymal stromal cells (rMSC) prior to implantation. After 6 and 12 weeks, remaining defect width and bone formation were quantified histologically and by microCT. The results revealed excellent osteoconductive properties of the scaffolds, a significant influence of the pore geometry (60° > 30°), but no enhanced defect healing by pre-colonization with rMSC. Copyright © 2020 Korn, Ahlfeld, Lahmeyer, Kilian, Sembdner, Stelzer, Pradel, Franke, Rauner, Range, Stadlinger, Lode, Lauer and Gelinsky.Pulsed Electric Fields (PEF) is a promising technology for the gentle and energy efficient disruption of microalgae cells such as Chlorella vulgaris. The technology is based on the exposure of cells to a high voltage electric field, which causes the permeabilization of the cell membrane. Due to the dependency of the effective treatment conditions on the specific design of the treatment chamber, it is difficult to compare data obtained in different chambers or at different scales, e.g., lab or pilot scale. This problem can be overcome by the help of numerical simulation since it enables the accessibility to the local treatment conditions (electric field strength, temperature, flow field) inside a treatment chamber. To date, no kinetic models for the cell membrane permeabilization of microalgae are available what makes it difficult to decide if and in what extent local treatment conditions have an impact on the permeabilization. Therefore, a kinetic model for the perforation of microalgae cells of the species Cof biorefining microalgae biomass. This can help to develop new processes and to reduce the costs for the development of new treatment chamber designs. Copyright © 2020 Knappert, McHardy and Rauh.Lipid has been widely studied as a vehicle and loading vector, but there have been no reports of any such related application in the dental field. The purpose of this research was to fabricate and characterize a nano-size calcium-phosphate lipid (CL) system as a potential vehicle in dental regeneration study, wherein the biocompatibility with dental pulp stem cells (DPSCs) was evaluated. The effect of CL on DPSCs proliferation was analyzed by a CCK-8 assay, and the anti-inflammatory effect was investigated by quantitative polymerase chain reaction (qPCR). Moreover, the effect of CL on odontogenic differentiation of inflamed DPSCs (iDPSCs) was studied by Alizarin red staining, tissue-non-specific alkaline phosphatase (TNAP) staining, qPCR, and western blot analyses. The results of this study showed that CL did not affect the proliferation of DPSCs, it down-regulated the inflammatory-associated markers (IL-1β, IL-6, TNF-α, COX-2) of DPSCs treated with Escherichia coli lipopolysaccharide (LPS), and enhanced the in-vitro odontogenic differentiation potential of iDPSCs. This novel biomaterial has a broad application prospect for its bioactivity and flexible physical property, and thus represents a promising pulpal regeneration material. Copyright © 2020 Zhu, Wang, Xie, Qin, Lin and Wang.Background Management of musculoskeletal tumors remains challenging for orthopedic surgeons. selleck chemical The aim of this cross-sectional study was to present the prevalence and localization of musculoskeletal disorders diagnosed and treated at a tertiary referral military hospital. Method A total of 552 patients’ medical records who presented to our clinic between 2009 and 2014 with the diagnosis of musculoskeletal tumors were retrospectively analyzed according to age, gender, bone/soft tissue localization, histopathological diagnosis, incidence, and treatment. Results Of the cases diagnosed with tumor, 225 were soft tissue localized, 317 bone localized, and 10 tumor-like lesions. The most common primary benign soft tissue tumors were lipoma, ganglion, and giant cell tumor of tendon sheath, while the most common malignant soft tissue tumors were liposarcoma and synovial sarcoma, respectively. The most common primary bone tumors were osteochondroma, enchondroma, and simple bone cyst, while the most common malignant bone tumors were osteosarcoma, Ewing sarcoma and chondrosarcoma, respectively. Myositis ossificans was found as the most common tumor-like lesion. Conclusion Descriptive data in musculoskeletal tumors is crucial in terms of improving treatment and reducing mortality. In this study, no significant difference was found between the data of tertiary military hospital regarding epidemiology of musculoskeletal system tumors and those from the literatures around Turkey. Copyright © 2020 Neyisci and Erdem.Ready-to-eat salad harbors microorganisms that may carry various antibiotic resistance genes (ARGs). However, few studies have focused on the prevalence of ARGs on salad, thus underestimating the risk of ARGs transferring from salad to consumers. In this small-scale study, high-throughput quantitative PCR was used to explore the presence, prevalence and abundance of ARGs associated with serving salad sourced from two restaurant types, fast-food chain and independent casual dining. A total of 156 unique ARGs and nine mobile genetic elements (MGEs) were detected on the salad items assessed. The abundance of ARGs and MGEs were significantly higher in independent casual dining than fast-food chain restaurants. Absolute copies of ARGs in salad were 1.34 × 107 to 2.71 × 108 and 1.90 × 108 to 4.87 × 108 copies per g salad in fast-food and casual dining restaurants, respectively. Proteobacteria, Bacteroidetes, Actinobacteria, and Firmicutes were the dominant bacterial phyla detected from salad samples. Pseudomonas, Acinetobacter, Exiguobacterium, Weissella, Enterobacter, Leuconostoc, Pantoea, Serratia, Erwinia, and Ewingella were the 10 most dominant bacterial genera found in salad samples.