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  1. Article ; Online: Recent Advances in Enhancement Strategies for Osteogenic Differentiation of Mesenchymal Stem Cells in Bone Tissue Engineering

    Kangkang Zha / Yue Tian / Adriana C. Panayi / Bobin Mi / Guohui Liu

    Frontiers in Cell and Developmental Biology, Vol

    2022  Volume 10

    Abstract: Although bone is an organ that displays potential for self-healing after damage, bone regeneration does not occur properly in some cases, and it is still a challenge to treat large bone defects. The development of bone tissue engineering provides a new ... ...

    Abstract Although bone is an organ that displays potential for self-healing after damage, bone regeneration does not occur properly in some cases, and it is still a challenge to treat large bone defects. The development of bone tissue engineering provides a new approach to the treatment of bone defects. Among various cell types, mesenchymal stem cells (MSCs) represent one of the most promising seed cells in bone tissue engineering due to their functions of osteogenic differentiation, immunomodulation, and secretion of cytokines. Regulation of osteogenic differentiation of MSCs has become an area of extensive research over the past few years. This review provides an overview of recent research progress on enhancement strategies for MSC osteogenesis, including improvement in methods of cell origin selection, culture conditions, biophysical stimulation, crosstalk with macrophages and endothelial cells, and scaffolds. This is favorable for further understanding MSC osteogenesis and the development of MSC-based bone tissue engineering.
    Keywords mesenchymal stem cell ; osteogenesis ; bone defect ; bone healing ; tissue engineering ; Biology (General) ; QH301-705.5
    Subject code 616 ; 571
    Language English
    Publishing date 2022-02-01T00:00:00Z
    Publisher Frontiers Media S.A.
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: A network pharmacology study on analgesic mechanism of Yuanhu-Baizhi herb pair

    Bobin Mi / Qiushi Li / Tong Li / Jessica Marshall / Jiayang Sai

    BMC Complementary Medicine and Therapies, Vol 20, Iss 1, Pp 1-

    2020  Volume 8

    Abstract: Abstract Background Millions of people are suffering from chronic pain conditions, such as headache, arthritis, cancer. Apart from western medicines, traditional Chinese medicines are also well accepted for pain management, especially in Asian countries. ...

    Abstract Abstract Background Millions of people are suffering from chronic pain conditions, such as headache, arthritis, cancer. Apart from western medicines, traditional Chinese medicines are also well accepted for pain management, especially in Asian countries. Yuanhu-Baizhi herb pair (YB) is a typical herb pair applied to the treatment of stomach pain, hypochondriac pain, headache, and dysmenorrhea, due to its effects on analgesia and sedation. This study is to identify potentially active compounds and the underlying mechanisms of YB in the treatment of pain. Methods Compounds in YB were collected from 3 online databases and then screened by bioavailability and drug likeness parameters. Swiss target prediction was applied to obtain targets information of the active compounds. Pain-related genes were conducted for Gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis. Protein-protein interaction (PPI) networks of the genes were constructed using Cytoscape software. In addition, the hub genes were screened using maximal clique centrality (MCC) algorithm. Results In total, 31 compounds from Yuanhu were screened out with 35 putative target genes, while 26 compounds in Baizhi with 43 target genes were discovered. Hence, 78 potential target genes of YB were selected for further study. After overlap analysis of the 78 genes of YB and 2408 pain-associated genes, we finally achieved 34 YB-pain target genes, as well as 10 hub genes and 23 core compounds. Go enrichment and KEGG pathway analysis indicated that YB had a strong integration with neuro system, which might significantly contribute to antinociceptive effect. Conclusion Our data provide deep understanding of the pharmacological mechanisms of YB in attenuating pain. The discovery shed new light on the development of active compounds of YB for the treatment of pain.
    Keywords Rhizoma Corydalis ; Radix angelicae dahuricae ; Pain ; Analgesic ; Network pharmacology ; Other systems of medicine ; RZ201-999
    Language English
    Publishing date 2020-09-01T00:00:00Z
    Publisher BMC
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article ; Online: Neddylation suppression by a macrophage membrane-coated nanoparticle promotes dual immunomodulatory repair of diabetic wounds

    Ruiyin Zeng / Bin Lv / Ze Lin / Xiangyu Chu / Yuan Xiong / Samuel Knoedler / Faqi Cao / Chuanlu Lin / Lang Chen / Chenyan Yu / Jiewen Liao / Wu Zhou / Guandong Dai / Mohammad-Ali Shahbazi / Bobin Mi / Guohui Liu

    Bioactive Materials, Vol 34, Iss , Pp 366-

    2024  Volume 380

    Abstract: Oxidative stress, infection, and vasculopathy caused by hyperglycemia are the main barriers for the rapid repair of foot ulcers in patients with diabetes mellitus (DM). In recent times, the discovery of neddylation, a new type of post-translational ... ...

    Abstract Oxidative stress, infection, and vasculopathy caused by hyperglycemia are the main barriers for the rapid repair of foot ulcers in patients with diabetes mellitus (DM). In recent times, the discovery of neddylation, a new type of post-translational modification, has been found to regulate various crucial biological processes including cell metabolism and the cell cycle. Nevertheless, its capacity to control the healing of wounds in diabetic patients remains unknown. This study shows that MLN49224, a compound that inhibits neddylation at low concentrations, enhances the healing of diabetic wounds by inhibiting the polarization of M1 macrophages and reducing the secretion of inflammatory factors. Moreover, it concurrently stimulates the growth, movement, and formation of blood vessel endothelial cells, leading to expedited healing of wounds in individuals with diabetes. The drug is loaded into biomimetic macrophage-membrane-coated PLGA nanoparticles (M-NPs/MLN4924). The membrane of macrophages shields nanoparticles from being eliminated in the reticuloendothelial system and counteracts the proinflammatory cytokines to alleviate inflammation in the surrounding area. The extended discharge of MLN4924 from M-NPs/MLN4924 stimulates the growth of endothelial cells and the formation of tubes, along with the polarization of macrophages towards the anti-inflammatory M2 phenotype. By loading M-NPs/MLN4924 into a hydrogel, the final formulation is able to meaningfully repair a diabetic wound, suggesting that M-NPs/MLN4924 is a promising engineered nanoplatform for tissue engineering.
    Keywords Diabetes ; Biomimetic nanoparticle ; Macrophage polarization ; Macrophages cell membranes ; Wound healing ; Materials of engineering and construction. Mechanics of materials ; TA401-492 ; Biology (General) ; QH301-705.5
    Subject code 571
    Language English
    Publishing date 2024-04-01T00:00:00Z
    Publisher KeAi Communications Co., Ltd.
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article ; Online: Circulating MiRNA-21-enriched extracellular vesicles promote bone remodeling in traumatic brain injury patients

    Ze Lin / Yuan Xiong / Yun Sun / Ruiyin Zeng / Hang Xue / Yiqiang Hu / Lang Chen / Guodong Liu / Adriana C. Panayi / Wu Zhou / Faqi Cao / Fei Gao / Bobin Mi / Guohui Liu

    Experimental and Molecular Medicine, Vol 55, Iss 3, Pp 587-

    2023  Volume 596

    Abstract: Bone fracture: faster healing after traumatic brain injury Extracellular vesicles enriched with a particular microRNA released following traumatic brain injury (TBI) help fractures heal faster and could inform treatments for skeletal disorders. Patients ... ...

    Abstract Bone fracture: faster healing after traumatic brain injury Extracellular vesicles enriched with a particular microRNA released following traumatic brain injury (TBI) help fractures heal faster and could inform treatments for skeletal disorders. Patients with TBI and associated fractures experience shorter fracture recovery times than patients with fractures only, but precisely why is unclear. Ze Lin at Huazhong University of Science and Technology, Wuhan, China, and co-workers examined molecules released during recovery in samples taken from patients with TBI and fractures, those with fractures only, and mouse models with femur fractures. They found that exosomes (extracellular vesicles that transport metabolites including microRNA) released following TBI are enriched with miRNA-21-5 p, which enhances differentiation of bone-forming cells and bone repair. No miRNA-21-5 p enrichment occurred in patients with fractures only. Knocking out exosomal miRNA-21-5 p impaired bone repair in mice, while injecting exosomes from TBI patients boosted bone formation.
    Keywords Medicine ; R ; Biochemistry ; QD415-436
    Subject code 616
    Language English
    Publishing date 2023-03-01T00:00:00Z
    Publisher Nature Publishing Group
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article ; Online: Immunomodulatory Nanosystems

    Xiangyu Chu / Yuan Xiong / Samuel Knoedler / Li Lu / Adriana C. Panayi / Michael Alfertshofer / Dongsheng Jiang / Yuval Rinkevich / Ze Lin / Zhiming Zhao / Guandong Dai / Bobin Mi / Guohui Liu

    Research, Vol

    Advanced Delivery Tools for Treating Chronic Wounds

    2023  Volume 6

    Abstract: The increasingly aging society led to a rise in the prevalence of chronic wounds (CWs), posing a significant burden to public health on a global scale. One of the key features of CWs is the presence of a maladjusted immune microenvironment characterized ... ...

    Abstract The increasingly aging society led to a rise in the prevalence of chronic wounds (CWs), posing a significant burden to public health on a global scale. One of the key features of CWs is the presence of a maladjusted immune microenvironment characterized by persistent and excessive (hyper)inflammation. A variety of immunomodulatory therapies have been proposed to address this condition. Yet, to date, current delivery systems for immunomodulatory therapy remain inadequate and lack efficiency. This highlights the need for new therapeutic delivery systems, such as nanosystems, to manage the pathological inflammatory imbalance and, ultimately, improve the treatment outcomes of CWs. While a plethora of immunomodulatory nanosystems modifying the immune microenvironment of CWs have shown promising therapeutic effects, the literature on the intersection of immunomodulatory nanosystems and CWs remains relatively scarce. Therefore, this review aims to provide a comprehensive overview of the pathogenesis and characteristics of the immune microenvironment in CWs, discuss important advancements in our understanding of CW healing, and delineate the versatility and applicability of immunomodulatory nanosystems-based therapies in the therapeutic management of CWs. In addition, we herein also shed light on the main challenges and future perspectives in this rapidly evolving research field.
    Keywords Science ; Q
    Language English
    Publishing date 2023-01-01T00:00:00Z
    Publisher American Association for the Advancement of Science
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  6. Article ; Online: Different internal fixation methods for Hoffa-like fractures of the tibial plateau

    Hang Xue / Junrong Deng / Zhenhe Zhang / Samuel Knoedler / Adriana C. Panayi / Leonard Knoedler / Bobin Mi / Mengfei Liu / Guandong Dai / Guohui Liu

    Frontiers in Medicine, Vol

    a finite element analysis

    2023  Volume 10

    Abstract: Due to the low incidence of posteromedial tibial plateau fractures and limited clinical data available, the optimal treatment for this type of fracture remains to be established. This type of fracture, also known as Hoffa-like fracture of the tibial ... ...

    Abstract Due to the low incidence of posteromedial tibial plateau fractures and limited clinical data available, the optimal treatment for this type of fracture remains to be established. This type of fracture, also known as Hoffa-like fracture of the tibial plateau, shares a similar mechanism of injury with the Hoffa fracture of the femoral condyle. In the field of orthopedics, finite element analysis is considered a valuable method to guide clinical decision-making. In this study, four methods used for internal fixation of Hoffa-like fractures of the tibial plateau were compared using computer simulation and applying a finite element method (FEM). The methods compared were lateral L-plate fixation alone (Model A); lateral L-plate combined with posterior anti-slip plate (reconstruction plate/T-plate) fixation (Model B); lateral L-plate combined with posterior hollow nail fixation of the fracture block (Model C); and lateral L-plate combined with anterior hollow nail fixation of the fracture (Model D). The maximum displacement of the model and the maximum stress of the internal fixation material were analyzed by applying an axial load of 2,500 N. The results showed that, in the normal bone model, the maximum displacement of the fracture in Model A was 0.60032 mm, with improved stability through the addition of posterior lateral plate fixation in Model B and reduction of the displacement to 0.38882 mm. The maximum displacement in Model C and Model D was comparable, amounting to 0.42345 mm and 0.42273 mm, respectively. Maximum stress was 1235.6 MPa for Model A, 84.724 MPa for Model B, 99.805 MPa for Model C, and 103.19 MPa for Model D. In the internal fixation analysis of the osteoporotic fracture model, we observed patterns similar to the results of the normal bone model. The results indicated that Model B yielded the overall best results in the treatment of Hoffa-like fractures of the tibial plateau. The orthopedic surgeon may wish to implement these insights into the perioperative algorithm, thereby refining and ...
    Keywords finite element analysis ; tibial plateau fracture ; Hoffa fracture ; posteromedial split ; internal fixation ; Medicine (General) ; R5-920
    Subject code 550
    Language English
    Publishing date 2023-07-01T00:00:00Z
    Publisher Frontiers Media S.A.
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article ; Online: Hypoxia endothelial cells-derived exosomes facilitate diabetic wound healing through improving endothelial cell function and promoting M2 macrophages polarization

    Peng Cheng / Xudong Xie / Liangcong Hu / Wu Zhou / Bobin Mi / Yuan Xiong / Hang Xue / Kunyu Zhang / Yuxiao Zhang / Yiqiang Hu / Lang Chen / Kangkang Zha / Bin Lv / Ze Lin / Chuanlu Lin / Guandong Dai / Yixin Hu / Tengbo Yu / Hankun Hu /
    Guohui Liu / Yingze Zhang

    Bioactive Materials, Vol 33, Iss , Pp 157-

    2024  Volume 173

    Abstract: It is imperative to develop and implement newer, more effective strategies to address refractory diabetic wounds. As of now, there is currently no optimal solution for these wounds. Hypoxic human umbilical vein endothelial cells (HUVECs)-derived exosomes ...

    Abstract It is imperative to develop and implement newer, more effective strategies to address refractory diabetic wounds. As of now, there is currently no optimal solution for these wounds. Hypoxic human umbilical vein endothelial cells (HUVECs)-derived exosomes have been postulated to promote diabetic wound healing, however, its effect and molecular mechanism need further study. In this study, we aimed to investigate whether hypoxic exosomes enhance wound healing in diabetics. Based on our high-throughput sequencing, differentially expressed lncRNAs (including 64 upregulated lncRNAs and 94 downregulated lncRNAs) were found in hypoxic exosomes compared to normoxic exosomes. Interestingly, lncHAR1B was one of the prominently upregulated lncRNAs in hypoxic exosomes, showing a notable correlation with diabetic wound healing. More specifically, hypoxic exosomes were transmitted to surrounding cells, which resulted in a significant increase in lncHAR1B level, thereby relieving the dysfunction of endothelial cells and promoting the switch from M1 to M2 macrophages under high glucose conditions. Mechanistically, lncHAR1B directly interacted with the transcription factor basic helix-loop-helix family member e23 (BHLHE23), which subsequently led to its binding to the KLF transcription factor 4 (KLF4) and promoted KLF4 expression. In our in vivo experiments, the use of hypoxic exosomes-loaded HGM-QCS hydrogels (Gel-H-Exos) resulted in rapid wound healing compared to that of normoxic exosomes-loaded HGM-QCS hydrogels (Gel-N-Exos) and diabetic groups. Consequently, our study provides potentially novel therapeutic approaches aimed at accelerating wound healing and developing a practical exosomes delivery platform.
    Keywords Diabetic wound ; Hypoxic exosomes ; lncHAR1B ; KLF4 ; Macrophage polarization ; Materials of engineering and construction. Mechanics of materials ; TA401-492 ; Biology (General) ; QH301-705.5
    Subject code 616
    Language English
    Publishing date 2024-03-01T00:00:00Z
    Publisher KeAi Communications Co., Ltd.
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  8. Article ; Online: Metformin alleviates bone loss in ovariectomized mice through inhibition of autophagy of osteoclast precursors mediated by E2F1

    Xudong Xie / Liangcong Hu / Bobin Mi / Hang Xue / Yiqiang Hu / Adriana C. Panayi / Yori Endo / Lang Chen / Chenchen Yan / Ze Lin / Hui Li / Wu Zhou / Guohui Liu

    Cell Communication and Signaling, Vol 20, Iss 1, Pp 1-

    2022  Volume 18

    Abstract: Abstract Background Postmenopausal bone loss, mainly caused by excessive bone resorption mediated by osteoclasts, has become a global public health burden. Metformin, a hypoglycemic drug, has been reported to have beneficial effects on maintaining bone ... ...

    Abstract Abstract Background Postmenopausal bone loss, mainly caused by excessive bone resorption mediated by osteoclasts, has become a global public health burden. Metformin, a hypoglycemic drug, has been reported to have beneficial effects on maintaining bone health. However, the role and underlying mechanism of metformin in ovariectomized (OVX)-induced bone loss is still vague. Results In this study, we demonstrated for the first time that metformin administration alleviated bone loss in postmenopausal women and ovariectomized mice, based on reduced bone resorption markers, increased bone mineral density (BMD) and improvement of bone microstructure. Then, osteoclast precursors administered metformin in vitro and in vivo were collected to examine the differentiation potential and autophagical level. The mechanism was investigated by infection with lentivirus-mediated BNIP3 or E2F1 overexpression. We observed a dramatical inhibition of autophagosome synthesis and osteoclast formation and activity. Treatment with RAPA, an autophagy activator, abrogated the metformin-mediated autophagy downregulation and inhibition of osteoclastogenesis. Additionally, overexpression of E2F1 demonstrated that reduction of OVX-upregulated autophagy mediated by metformin was E2F1 dependent. Mechanistically, metformin-mediated downregulation of E2F1 in ovariectomized mice could downregulate BECN1 and BNIP3 levels, which subsequently perturbed the binding of BECN1 to BCL2. Furthermore, the disconnect between BECN1 and BCL2 was shown by BNIP3 overexpression. Conclusion In summary, we demonstrated the effect and underlying mechanism of metformin on OVX-induced bone loss, which could be, at least in part, ascribed to its role in downregulating autophagy during osteoclastogenesis via E2F1-dependent BECN1 and BCL2 downregulation, suggesting that metformin or E2F1 inhibitor is a potential agent against postmenopausal bone loss. Video abstract
    Keywords Metformin ; Osteoclast precursors ; Bone loss ; Autophagy ; E2F1 ; BECN1 ; Medicine ; R ; Cytology ; QH573-671
    Subject code 616
    Language English
    Publishing date 2022-10-01T00:00:00Z
    Publisher BMC
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  9. Article ; Online: Clinical Application Study of Minimally Invasive Double-Reverse Traction in Complex Tibial Plateau Fractures

    Faqi Cao / Hang Xue / Chenchen Yan / Ze Lin / Bobin Mi / Adriana C. Panayi / Tian Xia / Wu Zhou / Hui Li / Guohui Liu

    BioMed Research International, Vol

    2022  Volume 2022

    Abstract: The aim of this study was to evaluate the clinical application of double-reverse traction for minimally invasive reduction of complex tibial plateau fractures. A retrospective analysis was performed to identify all patients admitted to the Department of ... ...

    Abstract The aim of this study was to evaluate the clinical application of double-reverse traction for minimally invasive reduction of complex tibial plateau fractures. A retrospective analysis was performed to identify all patients admitted to the Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, from March 2017 to December 2019 with Schatzker type VI tibial plateau fractures. 12 patients were identified (7 men and 5 women) with an average age of 46.15±13 (39-58) years old. All patients were treated with double-reverse traction and closed reduction. After the fracture was reduced, the bone plate was fixed by percutaneous minimally invasive implantation. Outcomes assessed in this study include operation time and intraoperative blood loss. Imaging was performed during the postoperative follow-up, and functional recovery was evaluated at the final follow-up according to the Hospital for Special Surgery (HSS) score and the International Knee Joint Literature Committee (IKDC) functional score. Patients were followed up for 12.54±1.5 (8-15) months. The average operation time was 63.63±21 (35-120) minutes, and the average intraoperative blood loss was 105.45±21 (60-200) mL. The Rasmussen imaging score was either excellent or good in all cases. The knee joint HSS score was 86.15±6 (79-90) points, and the IKDC score was 80.01±11 (75-90) points. No complications, such as wound infection, incision disunion, loosening of internal fixation, and internal fixation failure, occurred. In the treatment of Schatzker VI type complex tibial plateau fracture, the dual-reverse traction minimally invasive technique has the advantages of safety and effectiveness, less soft tissue injury, and allowing early joint movement, which is worthy of clinical promotion.
    Keywords Medicine ; R
    Subject code 616
    Language English
    Publishing date 2022-01-01T00:00:00Z
    Publisher Hindawi Limited
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  10. Article ; Online: SHIP1 Activator AQX-1125 Regulates Osteogenesis and Osteoclastogenesis Through PI3K/Akt and NF-κb Signaling

    Xudong Xie / Liangcong Hu / Bobin Mi / Adriana C. Panayi / Hang Xue / Yiqiang Hu / Guodong Liu / Lang Chen / Chenchen Yan / Kangkang Zha / Ze Lin / Wu Zhou / Fei Gao / Guohui Liu

    Frontiers in Cell and Developmental Biology, Vol

    2022  Volume 10

    Abstract: With the worldwide aging population, the prevalence of osteoporosis is on the rise, particularly the number of postmenopausal women with the condition. However, the various adverse side effects associated with the currently available treatment options ... ...

    Abstract With the worldwide aging population, the prevalence of osteoporosis is on the rise, particularly the number of postmenopausal women with the condition. However, the various adverse side effects associated with the currently available treatment options underscore the need to develop novel therapies. In this study, we investigated the use of AQX-1125, a novel clinical-stage activator of inositol phosphatase-1 (SHIP1), in ovariectomized (OVX) mice, identifying a protective role. We then found that the effect was likely due to increased osteogenesis and mineralization and decreased osteoclastogenesis caused by AQX-1125 in a time- and dose-dependent manner. The effect against OVX-induced bone loss was identified to be SHIP1-dependent as pretreatment of BMSCs and BMMs with SHIP1 RNAi could greatly diminish the osteoprotective effects. Furthermore, SHIP1 RNAi administration in vivo induced significant bone loss and decreased bone mass. Mechanistically, AQX-1125 upregulated the expression level and activity of SHIP1, followed upregulating the phosphorylation levels of PI3K and Akt to promote osteoblast-related gene expressions, including Alp, cbfa1, Col1a1, and osteocalcin (OCN). NF-κB signaling was also inhibited through suppression of the phosphorylation of IκBα and P65 induced by RANKL, resulting in diminished osteoclastogenesis. Taken together, our results demonstrate that AQX-1125 may be a promising candidate for preventing and treating bone loss.
    Keywords AQX-1125 ; SHIP1 ; bone loss ; osteoblast ; osteoclast ; Biology (General) ; QH301-705.5
    Subject code 616
    Language English
    Publishing date 2022-04-01T00:00:00Z
    Publisher Frontiers Media S.A.
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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