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Roch L, Ewaoluwagbemiga EO, Kasper C. Phenotypic link between protein efficiency and pig welfare suggests no apparent trade-offs for mitigating nitrogen pollution. Sci Rep 2023; 13:14299. [PMID: 37652949 PMCID: PMC10471582 DOI: 10.1038/s41598-023-41232-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Accepted: 08/23/2023] [Indexed: 09/02/2023] Open
Abstract
Pig manure contributes significantly to environmental pollution through nitrogen compounds. Reducing protein in feed can help, but it may lead to damaging behaviors if pigs' nutritional needs are not met. Breeding pigs for higher protein efficiency (PE) is a long-term solution to reduce nitrogen pollution, but concerns about pig welfare remain. We studied 95 pigs involved in a project on the genetic basis of PE on a 20% protein restricted diet to investigate the phenotypic connection between PE and welfare. These pigs represented natural PE variations in the population. At around 100 days, before their PE was known, we observed their behaviors. Only three pigs engaged in tail biting and manipulation of vulnerable regions, but this was not associated with PE. There was no clear link between PE and manipulating pen mates' less vulnerable regions. Such behaviors are normal but can cause stress and injury if carried out excessively due to boredom or stress. Overall, pigs with higher PE showed no major behavioral abnormalities in this study. Considering the lack of genetic knowledge, the risk of increased harmful behaviors when selecting for higher PE appears low when inferred from this purely phenotypic association.
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Affiliation(s)
- Lea Roch
- Animal GenoPhenomics, Agroscope, Tioleyre 4, 1725, Posieux, Switzerland
- Animal Welfare Division, Veterinary Public Health Institute, University of Bern, Länggassstrasse 120, 3012, Bern, Switzerland
| | - Esther Oluwada Ewaoluwagbemiga
- Animal GenoPhenomics, Agroscope, Tioleyre 4, 1725, Posieux, Switzerland
- Department of Environmental Systems Science, ETH Zurich, Universitätstrasse 2, 8092, Zurich, Switzerland
| | - Claudia Kasper
- Animal GenoPhenomics, Agroscope, Tioleyre 4, 1725, Posieux, Switzerland.
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2
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Ewaoluwagbemiga EO, Bee G, Kasper C. Genetic analysis of protein efficiency and its association with performance and meat quality traits under a protein-restricted diet. Genet Sel Evol 2023; 55:35. [PMID: 37268880 DOI: 10.1186/s12711-023-00812-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 05/16/2023] [Indexed: 06/04/2023] Open
Abstract
BACKGROUND An essential component in the development of sustainable pig production is the reduction of nitrogen excretion in fattening pigs. Pig feeds typically contain high levels of dietary crude protein, and due to incomplete conversion to muscle tissue, excess nitrogen is excreted, resulting in environmental problems such as nitrate pollution and greenhouse gas emissions. Therefore, improving protein efficiency (PE), i.e., the proportion of dietary protein that remains in the carcass, is desirable. The aim of this study was to estimate the heritability (h2) of PE and its genetic correlations with phosphorus efficiency, three performance, seven meat quality and two carcass quality traits when pigs were fed a 20% protein-restricted diet, using 1071 Swiss Large White pigs. To determine PE, the intake of feed with known nutrient content was accurately recorded for each pig and the nitrogen and phosphorus content of the carcass was determined using dual-energy X-ray absorptiometry. RESULTS We found an average PE of 0.39 ± 0.04 and a heritability of 0.54 ± 0.10. PE showed a high genetic correlation with phosphorus efficiency (0.61 ± 0.16), moderate genetic correlations with feed conversion ratio (- 0.55 ± 0.14) and average daily feed intake (- 0.53 ± 0.14), and a low genetic correlation with average daily gain (- 0.19 ± 0.19). While PE has favourable genetic correlations with the performance traits and some meat quality traits, there is a potentially unfavourable correlation of PE with meat colour (redness [rg = - 0.27 ± 0.17]; yellowness [rg = - 0.31 ± 0.18]) and intra-muscular fat (IMF; rg = - 0.39 ± 0.15). Feed conversion ratio (FCR) also showed unfavourable genetic correlations with meat lightness, redness yellowness, IMF and cooking loss. CONCLUSIONS PE is a heritable trait that can be considered in breeding programs to reduce the environmental impact of pig production. We found no strong negative correlation of PE with meat quality traits, and that there is potential to indirectly select for improved phosphorus efficiency. Selecting nutrient efficiencies might be a more suitable strategy to reduce nitrogen pollution from manure than focusing on FCR because the latter also shows genetic antagonism with some meat quality traits in our population.
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Affiliation(s)
- Esther Oluwada Ewaoluwagbemiga
- Animal GenoPhenomics, Agroscope, 1725, Posieux, Switzerland
- Department of Environmental Systems Science, ETH Zurich, Zurich, Switzerland
| | - Giuseppe Bee
- Swine Research Unit, Agroscope, 1725, Posieux, Switzerland
| | - Claudia Kasper
- Animal GenoPhenomics, Agroscope, 1725, Posieux, Switzerland.
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3
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Ollagnier C, Kasper C, Wallenbeck A, Keeling L, Bee G, Bigdeli SA. Machine learning algorithms can predict tail biting outbreaks in pigs using feeding behaviour records. PLoS One 2023; 18:e0252002. [PMID: 36602982 DOI: 10.1371/journal.pone.0252002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 12/15/2022] [Indexed: 01/06/2023] Open
Abstract
Tail biting is a damaging behaviour that impacts the welfare and health of pigs. Early detection of precursor signs of tail biting provides the opportunity to take preventive measures, thus avoiding the occurrence of the tail biting event. This study aimed to build a machine-learning algorithm for real-time detection of upcoming tail biting outbreaks, using feeding behaviour data recorded by an electronic feeder. Prediction capacities of seven machine learning algorithms (Generalized Linear Model with Stepwise Feature Selection, random forest, Support Vector Machines with Radial Basis Function Kernel, Bayesian Generalized Linear Model, Neural network, K-nearest neighbour, and Partial Least Squares Discriminant Analysis) were evaluated from daily feeding data collected from 65 pens originating from two herds of grower-finisher pigs (25-100kg), in which 27 tail biting events occurred. Data were divided into training and testing data in two different ways, either by randomly splitting data into 75% (training set) and 25% (testing set), or by randomly selecting pens to constitute the testing set. In the first data splitting, the model is regularly updated with previous data from the pen, whereas in the second data splitting, the model tries to predict for a pen that it has never seen before. The K-nearest neighbour algorithm was able to predict 78% of the upcoming events with an accuracy of 96%, when predicting events in pens for which it had previous data. Our results indicate that machine learning models can be considered for implementation into automatic feeder systems for real-time prediction of tail biting events.
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Affiliation(s)
| | - Claudia Kasper
- Animal GenoPhenomics, Agroscope, Posieux, Fribourg, Switzerland
| | - Anna Wallenbeck
- Department of Animal Environment and Health, Swedish University of Agricultural Sciences, Ultuna, Uppsala, Sweden
| | - Linda Keeling
- Department of Animal Environment and Health, Swedish University of Agricultural Sciences, Ultuna, Uppsala, Sweden
| | - Giuseppe Bee
- Swine Research Unit, Agroscope, Posieux, Fribourg, Switzerland
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4
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Kasper C, Schlegel P, Ruiz-Ascacibar I, Stoll P, Bee G. Accuracy of predicting chemical body composition of growing pigs using dual-energy X-ray absorptiometry. Animal 2021; 15:100307. [PMID: 34273875 DOI: 10.1016/j.animal.2021.100307] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 05/29/2021] [Accepted: 05/31/2021] [Indexed: 01/02/2023] Open
Abstract
Studies in animal science assessing nutrient and energy efficiency or determining nutrient requirements benefit from gathering exact measurements of body composition or body nutrient contents. Those are acquired by standardized dissection or by grinding the body followed by wet chemical analysis, respectively. The two methods do not result in the same type of information, but both are destructive. Harnessing human medical imaging techniques for animal science can enable repeated measurements of individuals over time and reduce the number of individuals required for research. Among imaging techniques, dual-energy X-ray absorptiometry (DXA) is particularly promising. However, the measurements obtained with DXA do not perfectly match dissections or chemical analyses, requiring the adjustment of the DXA via calibration equations. Several calibration regressions have been published, but comparative studies of those regression equations and whether they are applicable to different data sets are pending. Thus, it is currently not clear whether existing regression equations can be directly used to convert DXA measurements into chemical values or whether each individual DXA device will require its own calibration. Our study builds prediction equations that relate body composition to the content of single nutrients in growing entire male pigs (BW range 20-100 kg) as determined by both DXA and chemical analyses, with R2 ranging between 0.89 for ash and 0.99 for water and CP. Moreover, we show that the chemical composition of the empty body can be satisfactorily determined by DXA scans of carcasses, with the prediction error ranging between 4.3% for CP and 12.6% for ash. Finally, we compare existing prediction equations for pigs of a similar range of BWs with the equations derived from our DXA measurements and evaluate their fit with our chemical analysis data. We found that existing equations for absolute contents that were built using the same DXA beam technology predicted our data more precisely than equations based on different technologies and percentages of fat and lean mass. This indicates that the creation of generic regression equations that yield reliable estimates of body composition in pigs of different growth stages, sexes and genetic breeds could be achievable in the near future. DXA may be a promising tool for high-throughput phenotyping for genetic studies, because it efficiently measures body composition in a large number and wide array of animals.
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Affiliation(s)
- C Kasper
- Agroscope, Swine Research Unit, Tioleyre 4, 1725 Posieux, Switzerland; Agroscope, Animal Genophenomics Group, Tioleyre 4, 1725 Posieux, Switzerland.
| | - P Schlegel
- Agroscope, Swine Research Unit, Tioleyre 4, 1725 Posieux, Switzerland
| | - I Ruiz-Ascacibar
- Agroscope, Swine Research Unit, Tioleyre 4, 1725 Posieux, Switzerland
| | - P Stoll
- Agroscope, Swine Research Unit, Tioleyre 4, 1725 Posieux, Switzerland
| | - G Bee
- Agroscope, Swine Research Unit, Tioleyre 4, 1725 Posieux, Switzerland
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5
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Almeria C, Weiss R, Roy M, Tripisciano C, Kasper C, Weber V, Egger D. Hypoxia conditioned mesenchymal stem cell-derived extracellular vesicles induce increased in vitro vascular tube formation. Cytotherapy 2021. [DOI: 10.1016/s1465324921004618] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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6
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Kress S, Egger D, Kasper C. Advanced in vitro management of three-dimensional cell cultures and explanted tissue. Cytotherapy 2021. [DOI: 10.1016/s1465324921005156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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7
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Giuseppe B, Kasper C, Schlegel P. PSVI-6 Effect of reduced dietary protein and amino acid supply imposed in the grower and finisher period or solely in the finisher period on growth traits and carcass protein deposition efficiency in pigs. J Anim Sci 2020. [DOI: 10.1093/jas/skaa054.339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Above 65 kg empty BW, protein deposition is greater in pigs fed protein-restricted compared to standard diets. It is unclear whether the greater CP deposition rate in the finisher period results from the restricted CP supply in the grower period. To elucidate this question, a growth performance study (22.1-110.0 kg BW) was performed with 48 Swiss Large White pigs. They were assigned to either treatment C, LPF or LPGF. The grower-finisher diets of treatment C were formulated based on the Swiss feeding recommendations whereas those of treatment LPGF contained 20% lower digestible CP and essential amino acid levels than diets C. Pigs of the LPGF treatment were offered in the grower and finisher period the standard and the low CP diets, respectively. The pigs were reared in 1 large pen, equipped with 6 automatic feeders, which allowed measuring the individual ad-libitum feed intake per visit. The BW was determined weekly and carcass composition at slaughter was determined by dual-X-ray-absorpiometry. Growth performance and dual-X-ray-absorpiometry data were analyzed with a linear mixed model using treatment as fixed and litter, litter size and farrowing series as random effects. Despite total CP intake was 6 and 16% lower (P< 0.05) in the LPGF than the LPF and C groups, respectively, overall ADG among treatments did not differ. In accordance, gain-to-CP-intake ratio was 9 and 20% greater (P< 0.05) in the LPGF than the LPF and C group. The carcass protein content did not differ whereas carcass fat content was 9% greater (P< 0.05) in LPGF than LPF and C pigs. Carcass protein deposition efficiency was 0.5 and 6.7%-units greater (P< 0.05) in LPGF than LPF and C pigs, respectively. In conclusion, lowering the CP supply by 20% in the grower and finisher compared to solely the finisher period or not at all has no detrimental effect on growth performance, markedly improves CP utilization for carcass protein deposition but slightly increases carcass fatness.
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8
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Kasper C, Ruiz-Ascacibar I, Stoll P, Bee G. Investigating the potential for genetic improvement of nitrogen and phosphorus efficiency in a Swiss large white pig population using chemical analysis. J Anim Breed Genet 2020; 137:545-558. [PMID: 32198799 PMCID: PMC7586817 DOI: 10.1111/jbg.12472] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 02/17/2020] [Accepted: 02/23/2020] [Indexed: 12/04/2022]
Abstract
Pig production contributes to environmental pollution through excretion of phosphorus and nitrogenous compounds. European pig production requires annual imports of currently 36 million tons of soya bean, because domestic plant protein sources often do not meet the required protein quality. Most of the mineral phosphate sources are also imported. It is therefore desirable to improve nutrient deposition efficiency through selective breeding, that is to realise similar growth rates and carcass compositions as currently achieved but with a lower intake of dietary crude protein or phosphate. For a preliminary evaluation of the potential of selecting for increased nutrient deposition efficiency, we estimated genetic parameters for nitrogen and phosphorus efficiencies in a Swiss Large White pig population including 294 individuals. Nutrient efficiency phenotypes were obtained from wet‐chemistry analyses of pigs of various live weights. Heritability of nitrogen efficiency was estimated at 41%. Heritability of phosphorus efficiency was very low (0.3%), but positive genetic correlations with nitrogen efficiency suggest that breeding for nitrogen efficiency would positively affect phosphorus efficiency. Further studies are needed to improve the quality of estimates and to obtain accurate high‐throughput measures of nutrient efficiency to be implemented on farms.
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Affiliation(s)
- Claudia Kasper
- Swine Research Unit, Agroscope Posieux, Posieux, Switzerland
| | | | - Peter Stoll
- Swine Research Unit, Agroscope Posieux, Posieux, Switzerland
| | - Giuseppe Bee
- Swine Research Unit, Agroscope Posieux, Posieux, Switzerland
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9
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Kasper C, Schreier T, Taborsky B. Heritabilities, social environment effects and genetic correlations of social behaviours in a cooperatively breeding vertebrate. J Evol Biol 2019; 32:955-973. [PMID: 31152617 DOI: 10.1111/jeb.13494] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 04/25/2019] [Accepted: 05/20/2019] [Indexed: 11/28/2022]
Abstract
Social animals interact frequently with conspecifics, and their behaviour is influenced by social context, environmental cues and the behaviours of interaction partners, allowing for adaptive, flexible adjustments to social encounters. This flexibility can be limited by part of the behavioural variation being genetically determined. Furthermore, behaviours can be genetically correlated, potentially constraining independent evolution. Understanding social behaviour thus requires carefully disentangling genetic, environmental, maternal and social sources of variations as well as the correlation structure between behaviours. Here, we assessed heritability, maternal, common environment and social effects of eight social behaviours in Neolamprologus pulcher, a cooperatively breeding cichlid. We bred wild-caught fish in a paternal half-sibling design and scored ability to defend a resource against conspecifics, to integrate into a group and the propensity to help defending the group territory ("helping behaviour"). We assessed genetic, social and phenotypic correlations within clusters of behaviours predicted to be functionally related, namely "competition," "aggression," "aggression-sociability," "integration" and "integration-help." Helping behaviour and two affiliative behaviours were heritable, whereas there was little evidence for a genetic basis in all other traits. Phenotypic social effects explained part of the variation in a sociable and a submissive behaviour, but there were no maternal or common environment effects. Genetic and phenotypic correlation within clusters was mostly positive. A group's social environment influenced covariances of social behaviours. Genetic correlations were similar in magnitude but usually exceeding the phenotypic ones, indicating that conclusions about the evolution of social behaviours in this species could be provisionally drawn from phenotypic data in cases where data for genetic analyses are unobtainable.
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Affiliation(s)
- Claudia Kasper
- Behavioural Ecology, University of Bern, Hinterkappelen, Switzerland
| | - Tanja Schreier
- Behavioural Ecology, University of Bern, Hinterkappelen, Switzerland
| | - Barbara Taborsky
- Behavioural Ecology, University of Bern, Hinterkappelen, Switzerland
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10
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Soltamov VA, Kasper C, Poshakinskiy AV, Anisimov AN, Mokhov EN, Sperlich A, Tarasenko SA, Baranov PG, Astakhov GV, Dyakonov V. Excitation and coherent control of spin qudit modes in silicon carbide at room temperature. Nat Commun 2019; 10:1678. [PMID: 30975985 PMCID: PMC6459825 DOI: 10.1038/s41467-019-09429-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 03/06/2019] [Indexed: 12/01/2022] Open
Abstract
One of the challenges in the field of quantum sensing and information processing is to selectively address and coherently manipulate highly homogeneous qubits subject to external perturbations. Here, we present room-temperature coherent control of high-dimensional quantum bits, the so-called qudits, associated with vacancy-related spins in silicon carbide enriched with nuclear spin-free isotopes. In addition to the excitation of a spectrally narrow qudit mode at the pump frequency, several other modes are excited in the electron spin resonance spectra whose relative positions depend on the external magnetic field. We develop a theory of multipole spin dynamics and demonstrate selective quantum control of homogeneous spin packets with sub-MHz spectral resolution. Furthermore, we perform two-frequency Ramsey interferometry to demonstrate absolute dc magnetometry, which is immune to thermal noise and strain inhomogeneity. High-dimensional quantum bits advance the application of quantum sensing and information processing technologies but suffer from the low spectral selectivity and working temperature. Here the authors present the selective excitation and control of spin qudits modes based on an ensemble of silicon vacancy defects in silicon carbide at room temperature.
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Affiliation(s)
- V A Soltamov
- Ioffe Institute, St. Petersburg, 194021, Russia.,Experimental Physics VI, Julius-Maximilian University of Würzburg, Würzburg, 97074, Germany
| | - C Kasper
- Experimental Physics VI, Julius-Maximilian University of Würzburg, Würzburg, 97074, Germany
| | | | | | - E N Mokhov
- Ioffe Institute, St. Petersburg, 194021, Russia.,National Research University of Information Technologies, Mechanics and Optics, St. Petersburg, 197101, Russia
| | - A Sperlich
- Experimental Physics VI, Julius-Maximilian University of Würzburg, Würzburg, 97074, Germany
| | | | - P G Baranov
- Ioffe Institute, St. Petersburg, 194021, Russia.,Peter the Great St. Petersburg Polytechnic University, St. Petersburg, 195251, Russia
| | - G V Astakhov
- Ioffe Institute, St. Petersburg, 194021, Russia. .,Experimental Physics VI, Julius-Maximilian University of Würzburg, Würzburg, 97074, Germany.
| | - V Dyakonov
- Experimental Physics VI, Julius-Maximilian University of Würzburg, Würzburg, 97074, Germany.
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11
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Kasper C, Colombo M, Aubin-Horth N, Taborsky B. Brain activation patterns following a cooperation opportunity in a highly social cichlid fish. Physiol Behav 2018; 195:37-47. [DOI: 10.1016/j.physbeh.2018.07.025] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Revised: 07/21/2018] [Accepted: 07/25/2018] [Indexed: 11/24/2022]
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12
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Kasper C, Hebert FO, Aubin-Horth N, Taborsky B. Divergent brain gene expression profiles between alternative behavioural helper types in a cooperative breeder. Mol Ecol 2018; 27:4136-4151. [DOI: 10.1111/mec.14837] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Revised: 07/21/2018] [Accepted: 08/07/2018] [Indexed: 01/17/2023]
Affiliation(s)
- Claudia Kasper
- Behavioural Ecology; University of Bern; Hinterkappelen Switzerland
| | - Francois Olivier Hebert
- Département de Biologie et Institut de Biologie Intégrative et des Systèmes; Université Laval; Québec Québec Canada
| | - Nadia Aubin-Horth
- Département de Biologie et Institut de Biologie Intégrative et des Systèmes; Université Laval; Québec Québec Canada
| | - Barbara Taborsky
- Behavioural Ecology; University of Bern; Hinterkappelen Switzerland
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13
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Kasper C, Kölliker M, Postma E, Taborsky B. Consistent cooperation in a cichlid fish is caused by maternal and developmental effects rather than heritable genetic variation. Proc Biol Sci 2018; 284:rspb.2017.0369. [PMID: 28701555 DOI: 10.1098/rspb.2017.0369] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Accepted: 06/05/2017] [Indexed: 01/29/2023] Open
Abstract
Studies on the evolution of cooperative behaviour are typically confined to understanding its adaptive value. It is equally essential, however, to understand its potential to evolve, requiring knowledge about the phenotypic consistency and genetic basis of cooperative behaviour. While previous observational studies reported considerably high heritabilities of helping behaviour in cooperatively breeding vertebrates, experimental studies disentangling the relevant genetic and non-genetic components of cooperative behaviour are lacking. In a half-sibling breeding experiment, we investigated the repeatability and heritability of three major helping behaviours performed by subordinates of the cooperatively breeding fish Neolamprologus pulcher To experimentally manipulate the amount of help needed in a territory, we raised the fish in two environments differing in egg predation risk. All three helping behaviours were significantly repeatable, but had very low heritabilities. The high within-individual consistencies were predominantly due to maternal and permanent environment effects. The perceived egg predation risk had no effect on helping, but social interactions significantly influenced helping propensities. Our results reveal that developmentally plastic adjustments of provided help to social context shape cooperative phenotypes, whereas heritable genetic variation plays a minor role.
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Affiliation(s)
- Claudia Kasper
- Department of Behavioural Ecology, Institute of Ecology and Evolution, University of Bern, Wohlenstrasse 50A, 3032 Hinterkappelen, Switzerland
| | - Mathias Kölliker
- Institute of Evolutionary Biology, University of Basel, Vesalgasse 1, 4051 Basel, Switzerland
| | - Erik Postma
- Department of Evolutionary Biology and Environmental Studies, University of Zurich, Winterthurerstrasse 190, 8057 Zürich, Switzerland.,Center for Ecology and Conservation, University of Exeter, Penryn Campus, Penryn, Cornwall TR10 9FE
| | - Barbara Taborsky
- Department of Behavioural Ecology, Institute of Ecology and Evolution, University of Bern, Wohlenstrasse 50A, 3032 Hinterkappelen, Switzerland
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14
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Kasper C, Vierbuchen M, Ernst U, Fischer S, Radersma R, Raulo A, Cunha-Saraiva F, Wu M, Mobley KB, Taborsky B. Genetics and developmental biology of cooperation. Mol Ecol 2017. [PMID: 28626971 DOI: 10.1111/mec.14208] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Despite essential progress towards understanding the evolution of cooperative behaviour, we still lack detailed knowledge about its underlying molecular mechanisms, genetic basis, evolutionary dynamics and ontogeny. An international workshop "Genetics and Development of Cooperation," organized by the University of Bern (Switzerland), aimed at discussing the current progress in this research field and suggesting avenues for future research. This review uses the major themes of the meeting as a springboard to synthesize the concepts of genetic and nongenetic inheritance of cooperation, and to review a quantitative genetic framework that allows for the inclusion of indirect genetic effects. Furthermore, we argue that including nongenetic inheritance, such as transgenerational epigenetic effects, parental effects, ecological and cultural inheritance, provides a more nuanced view of the evolution of cooperation. We summarize those genes and molecular pathways in a range of species that seem promising candidates for mechanisms underlying cooperative behaviours. Concerning the neurobiological substrate of cooperation, we suggest three cognitive skills necessary for the ability to cooperate: (i) event memory, (ii) synchrony with others and (iii) responsiveness to others. Taking a closer look at the developmental trajectories that lead to the expression of cooperative behaviours, we discuss the dichotomy between early morphological specialization in social insects and more flexible behavioural specialization in cooperatively breeding vertebrates. Finally, we provide recommendations for which biological systems and species may be particularly suitable, which specific traits and parameters should be measured, what type of approaches should be followed, and which methods should be employed in studies of cooperation to better understand how cooperation evolves and manifests in nature.
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Affiliation(s)
- Claudia Kasper
- Institute for Ecology and Evolution, University of Bern, Bern, Switzerland
| | | | - Ulrich Ernst
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Prague, Czech Republic
| | - Stefan Fischer
- Institute of Integrative Biology, University of Liverpool, Liverpool, UK
| | | | - Aura Raulo
- Department of Zoology, University of Oxford, Oxford, UK
| | - Filipa Cunha-Saraiva
- Department of Integrative Biology and Evolution, Konrad Lorenz Institute of Ethology, Vetmeduni Vienna, Vienna, Austria
| | - Min Wu
- Department of Environmental Sciences, Zoology and Evolution, University of Basel, Basel, Switzerland
| | - Kenyon B Mobley
- Department of Ecology and Evolution, University of Lausanne, Lausanne, Switzerland.,Department of Evolutionary Ecology, Max Planck Institute for Evolutionary Biology, Plön, Germany
| | - Barbara Taborsky
- Institute for Ecology and Evolution, University of Bern, Bern, Switzerland
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15
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Kraus H, Simin D, Kasper C, Suda Y, Kawabata S, Kada W, Honda T, Hijikata Y, Ohshima T, Dyakonov V, Astakhov GV. Three-Dimensional Proton Beam Writing of Optically Active Coherent Vacancy Spins in Silicon Carbide. Nano Lett 2017; 17:2865-2870. [PMID: 28350468 DOI: 10.1021/acs.nanolett.6b05395] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Constructing quantum devices comprises various challenging tasks, especially when concerning their nanoscale geometry. For quantum color centers, the traditional approach is to fabricate the device structure after the nondeterministic placement of the centers. Reversing this approach, we present the controlled generation of quantum centers in silicon carbide (SiC) by focused proton beam in a noncomplex manner without need for pre- or postirradiation treatment. The generation depth and resolution can be predicted by matching the proton energy to the material's stopping power, and the amount of quantum centers at one specific sample volume is tunable from ensembles of millions to discernible single photon emitters. We identify the generated centers as silicon vacancies through their characteristic magnetic resonance signatures and demonstrate that they possess a long spin-echo coherence time of 42 ± 20 μs at room temperature. Our approach hence enables the fabrication of quantum hybrid nanodevices based on SiC platform, where spin centers are integrated into p-i-n diodes, photonic cavities, and mechanical resonators.
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Affiliation(s)
- H Kraus
- Experimental Physics VI, Julius Maximilian University of Würzburg , 97074 Würzburg, Germany
- National Institutes for Quantum and Radiological Science and Technology (QST) , Takasaki, Gunma 370-1292, Japan
| | - D Simin
- Experimental Physics VI, Julius Maximilian University of Würzburg , 97074 Würzburg, Germany
| | - C Kasper
- Experimental Physics VI, Julius Maximilian University of Würzburg , 97074 Würzburg, Germany
| | - Y Suda
- Faculty of Science and Technology, Gunma University , Kiryu, Gunma 376-8515, Japan
| | - S Kawabata
- Faculty of Science and Technology, Gunma University , Kiryu, Gunma 376-8515, Japan
| | - W Kada
- Faculty of Science and Technology, Gunma University , Kiryu, Gunma 376-8515, Japan
| | - T Honda
- National Institutes for Quantum and Radiological Science and Technology (QST) , Takasaki, Gunma 370-1292, Japan
- Graduate School of Science and Engineering, Saitama University , Saitama 338-8570, Japan
| | - Y Hijikata
- Graduate School of Science and Engineering, Saitama University , Saitama 338-8570, Japan
| | - T Ohshima
- National Institutes for Quantum and Radiological Science and Technology (QST) , Takasaki, Gunma 370-1292, Japan
| | - V Dyakonov
- Experimental Physics VI, Julius Maximilian University of Würzburg , 97074 Würzburg, Germany
- Bavarian Center for Applied Energy Research (ZAE Bayern) , 97074 Würzburg, Germany
| | - G V Astakhov
- Experimental Physics VI, Julius Maximilian University of Würzburg , 97074 Würzburg, Germany
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Peter J, Kasper C, Kaufholz M, Buschow R, Isensee J, Hucho T, Herberg FW, Schwede F, Stein C, Jordt SE, Brackmann M, Spahn V. Ankyrin-rich membrane spanning protein as a novel modulator of transient receptor potential vanilloid 1-function in nociceptive neurons. Eur J Pain 2017; 21:1072-1086. [PMID: 28182310 DOI: 10.1002/ejp.1008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/12/2016] [Indexed: 02/01/2023]
Abstract
BACKGROUND The ion channel TRPV1 is mainly expressed in small diameter dorsal root ganglion (DRG) neurons, which are involved in the sensation of acute noxious thermal and chemical stimuli. Direct modifications of the channel by diverse signalling events have been intensively investigated, but little is known about the composition of modulating macromolecular TRPV1 signalling complexes. Here, we hypothesize that the novel adaptor protein ankyrin-rich membrane spanning protein/kinase D interacting substrate (ARMS) interacts with TRPV1 and modulates its function in rodent DRG neurons. METHODS We used immunohistochemistry, electrophysiology, microfluorimetry and immunoprecipitation experiments to investigate TRPV1 and ARMS interactions in DRG neurons and transfected cells. RESULTS We found that TRPV1 and ARMS are co-expressed in a subpopulation of DRG neurons. ARMS sensitizes TRPV1 towards capsaicin in transfected HEK 293 cells and in mouse DRG neurons in a PKA-dependent manner. Using a combination of functional imaging and immunocytochemistry, we show that the magnitude of the capsaicin response in DRG neurons depends not only on TRPV1 expression, but on the co-expression of ARMS alongside TRPV1. CONCLUSION These data indicate that ARMS is an important component of the signalling complex regulating the sensitivity of TRPV1. SIGNIFICANCE The study identifies ARMS as an important component of the signalling complex regulating the sensitivity of excitatory ion channels (TRPV1) in peripheral sensory neurons (DRG neurons) and transfected cells.
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Affiliation(s)
- J Peter
- Department of Anesthesiology and Critical Care Medicine, Charité - Universitätsmedizin Berlin, Germany
| | - C Kasper
- Department of Anesthesiology and Critical Care Medicine, Charité - Universitätsmedizin Berlin, Germany
| | - M Kaufholz
- Department of Biochemistry, University of Kassel, Germany
| | - R Buschow
- Department Human Molecular Genetics, Max Planck Institute for Molecular Genetics, Berlin, Germany
- Department of Anesthesiology and Intensive Care Medicine, Experimental Anesthesiology and Pain Research, University Hospital of Cologne, Germany
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Germany
| | - J Isensee
- Department Human Molecular Genetics, Max Planck Institute for Molecular Genetics, Berlin, Germany
- Department of Anesthesiology and Intensive Care Medicine, Experimental Anesthesiology and Pain Research, University Hospital of Cologne, Germany
| | - T Hucho
- Department Human Molecular Genetics, Max Planck Institute for Molecular Genetics, Berlin, Germany
- Department of Anesthesiology and Intensive Care Medicine, Experimental Anesthesiology and Pain Research, University Hospital of Cologne, Germany
| | - F W Herberg
- Department of Biochemistry, University of Kassel, Germany
| | - F Schwede
- Biolog Life Science Institute, Bremen, Germany
| | - C Stein
- Department of Anesthesiology and Critical Care Medicine, Charité - Universitätsmedizin Berlin, Germany
| | - S-E Jordt
- Department of Pharmacology, Yale Medical School, New Haven, CT, USA
- Department of Anesthesiology, Clinical Science Department, Duke University, Durham, NC, USA
| | - M Brackmann
- Department of Anesthesiology and Critical Care Medicine, Charité - Universitätsmedizin Berlin, Germany
| | - V Spahn
- Department of Anesthesiology and Critical Care Medicine, Charité - Universitätsmedizin Berlin, Germany
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Medvedev A, Neumann A, Ng H, Lapovok R, Kasper C, Lowe T, Anumalasetty V, Estrin Y. Combined effect of grain refinement and surface modification of pure titanium on the attachment of mesenchymal stem cells and osteoblast-like SaOS-2 cells. Materials Science and Engineering: C 2017; 71:483-497. [DOI: 10.1016/j.msec.2016.10.035] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Revised: 09/17/2016] [Accepted: 10/18/2016] [Indexed: 01/17/2023]
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Affiliation(s)
- M Makris
- Department of Cardiovascular Science, University of Sheffield, Sheffield, UK.
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Voelkl B, Kasper C, Schwab C. Network measures for dyadic interactions: stability and reliability. Am J Primatol 2011; 73:731-40. [DOI: 10.1002/ajp.20945] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2010] [Revised: 01/28/2011] [Accepted: 02/16/2011] [Indexed: 11/06/2022]
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Schneeweiss A, Foerster FG, Hollburg W, Tesch H, Klare P, Wuelfing P, Distelrath A, Schumacher C, Steffens CC, Schubert R, Widing A, Kasper C, Schmidt M. Abstract P2-16-12: First-Line Bevacizumab Combined with Paclitaxel in Triple-Negative Locally Recurrent/Metastatic Breast Cancer: Subpopulation Analysis of 115 Patients Treated in Routine Oncology Practice in Germany. Cancer Res 2010. [DOI: 10.1158/0008-5472.sabcs10-p2-16-12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Both progression-free survival (PFS) and response rate (RR) are significantly improved when bevacizumab (Bev) is combined with first-line chemotherapy for locally recurrent/metastatic breast cancer (LR/mBC), as demonstrated in three randomized, phase III trials (E2100, AVADO, RIBBON-1). The benefit derived from Bev appears to be similar in triple-negative (TN) and non-TN LR/mBC according to subanalyses of the randomized trials. We conducted a subpopulation analysis of TN patients treated with first-line Bev-paclitaxel (Pac) in a large German observational study in the context of routine oncology practice. Methods: Patients with HER2-negative LR/mBC received first-line Bev-Pac according to the European label at the time of study design. Safety and efficacy data were collected for up to 1 year (or until progression, death, or Bev discontinuation if earlier). The endpoints were safety and efficacy (PFS and RR). We conducted an exploratory analysis of the subset of patients with TN disease.
Results: Of the 567 patients for whom data are currently available, 115 (20%) had TN disease. Baseline characteristics and efficacy are summarized below. Overall survival data are immature and follow-up is continuing.
Conclusions: In this ongoing study, first-line Bev-Pac demonstrated a 51% RR and median PFS of 7.7 months in patients with TN LR/mBC. These data are consistent with findings from retrospective analyses of randomized phase III trials and a subpopulation analysis of the ATHENA study. Prospective trials evaluating Bev combination regimens in TN breast cancer are ongoing.
Citation Information: Cancer Res 2010;70(24 Suppl):Abstract nr P2-16-12.
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Affiliation(s)
- A Schneeweiss
- University of Heidelberg, Germany; Medical Care Center Flemmingstrasse, Chemnitz, Germany; Hämatologisch-onkologische Praxis Altona (HOPA), Hamburg, Germany; Oncological Practice Bethanien, Frankfurt, Germany; Praxisklinik Krebsheilkunde für Frauen, Berlin, Germany; University of Münster, Germany; MVZ Ostehessen Onkologie, Fulda, Germany; St. Elisabeth-Hospital, Cologne, Germany; Klinik Dr. Hancken, Stade, Germany; Gynäkologisch-onkologische Schwerpunktpraxis Schubert, Scheibenberg, Germany; Oncologische Praxisgemeinschaft, Berlin, Germany; Onkologische Schwerpunktpraxis Hof, Hof, Germany; University Hospital, Mainz, Germany
| | - FG Foerster
- University of Heidelberg, Germany; Medical Care Center Flemmingstrasse, Chemnitz, Germany; Hämatologisch-onkologische Praxis Altona (HOPA), Hamburg, Germany; Oncological Practice Bethanien, Frankfurt, Germany; Praxisklinik Krebsheilkunde für Frauen, Berlin, Germany; University of Münster, Germany; MVZ Ostehessen Onkologie, Fulda, Germany; St. Elisabeth-Hospital, Cologne, Germany; Klinik Dr. Hancken, Stade, Germany; Gynäkologisch-onkologische Schwerpunktpraxis Schubert, Scheibenberg, Germany; Oncologische Praxisgemeinschaft, Berlin, Germany; Onkologische Schwerpunktpraxis Hof, Hof, Germany; University Hospital, Mainz, Germany
| | - W Hollburg
- University of Heidelberg, Germany; Medical Care Center Flemmingstrasse, Chemnitz, Germany; Hämatologisch-onkologische Praxis Altona (HOPA), Hamburg, Germany; Oncological Practice Bethanien, Frankfurt, Germany; Praxisklinik Krebsheilkunde für Frauen, Berlin, Germany; University of Münster, Germany; MVZ Ostehessen Onkologie, Fulda, Germany; St. Elisabeth-Hospital, Cologne, Germany; Klinik Dr. Hancken, Stade, Germany; Gynäkologisch-onkologische Schwerpunktpraxis Schubert, Scheibenberg, Germany; Oncologische Praxisgemeinschaft, Berlin, Germany; Onkologische Schwerpunktpraxis Hof, Hof, Germany; University Hospital, Mainz, Germany
| | - H Tesch
- University of Heidelberg, Germany; Medical Care Center Flemmingstrasse, Chemnitz, Germany; Hämatologisch-onkologische Praxis Altona (HOPA), Hamburg, Germany; Oncological Practice Bethanien, Frankfurt, Germany; Praxisklinik Krebsheilkunde für Frauen, Berlin, Germany; University of Münster, Germany; MVZ Ostehessen Onkologie, Fulda, Germany; St. Elisabeth-Hospital, Cologne, Germany; Klinik Dr. Hancken, Stade, Germany; Gynäkologisch-onkologische Schwerpunktpraxis Schubert, Scheibenberg, Germany; Oncologische Praxisgemeinschaft, Berlin, Germany; Onkologische Schwerpunktpraxis Hof, Hof, Germany; University Hospital, Mainz, Germany
| | - P Klare
- University of Heidelberg, Germany; Medical Care Center Flemmingstrasse, Chemnitz, Germany; Hämatologisch-onkologische Praxis Altona (HOPA), Hamburg, Germany; Oncological Practice Bethanien, Frankfurt, Germany; Praxisklinik Krebsheilkunde für Frauen, Berlin, Germany; University of Münster, Germany; MVZ Ostehessen Onkologie, Fulda, Germany; St. Elisabeth-Hospital, Cologne, Germany; Klinik Dr. Hancken, Stade, Germany; Gynäkologisch-onkologische Schwerpunktpraxis Schubert, Scheibenberg, Germany; Oncologische Praxisgemeinschaft, Berlin, Germany; Onkologische Schwerpunktpraxis Hof, Hof, Germany; University Hospital, Mainz, Germany
| | - P Wuelfing
- University of Heidelberg, Germany; Medical Care Center Flemmingstrasse, Chemnitz, Germany; Hämatologisch-onkologische Praxis Altona (HOPA), Hamburg, Germany; Oncological Practice Bethanien, Frankfurt, Germany; Praxisklinik Krebsheilkunde für Frauen, Berlin, Germany; University of Münster, Germany; MVZ Ostehessen Onkologie, Fulda, Germany; St. Elisabeth-Hospital, Cologne, Germany; Klinik Dr. Hancken, Stade, Germany; Gynäkologisch-onkologische Schwerpunktpraxis Schubert, Scheibenberg, Germany; Oncologische Praxisgemeinschaft, Berlin, Germany; Onkologische Schwerpunktpraxis Hof, Hof, Germany; University Hospital, Mainz, Germany
| | - A Distelrath
- University of Heidelberg, Germany; Medical Care Center Flemmingstrasse, Chemnitz, Germany; Hämatologisch-onkologische Praxis Altona (HOPA), Hamburg, Germany; Oncological Practice Bethanien, Frankfurt, Germany; Praxisklinik Krebsheilkunde für Frauen, Berlin, Germany; University of Münster, Germany; MVZ Ostehessen Onkologie, Fulda, Germany; St. Elisabeth-Hospital, Cologne, Germany; Klinik Dr. Hancken, Stade, Germany; Gynäkologisch-onkologische Schwerpunktpraxis Schubert, Scheibenberg, Germany; Oncologische Praxisgemeinschaft, Berlin, Germany; Onkologische Schwerpunktpraxis Hof, Hof, Germany; University Hospital, Mainz, Germany
| | - C Schumacher
- University of Heidelberg, Germany; Medical Care Center Flemmingstrasse, Chemnitz, Germany; Hämatologisch-onkologische Praxis Altona (HOPA), Hamburg, Germany; Oncological Practice Bethanien, Frankfurt, Germany; Praxisklinik Krebsheilkunde für Frauen, Berlin, Germany; University of Münster, Germany; MVZ Ostehessen Onkologie, Fulda, Germany; St. Elisabeth-Hospital, Cologne, Germany; Klinik Dr. Hancken, Stade, Germany; Gynäkologisch-onkologische Schwerpunktpraxis Schubert, Scheibenberg, Germany; Oncologische Praxisgemeinschaft, Berlin, Germany; Onkologische Schwerpunktpraxis Hof, Hof, Germany; University Hospital, Mainz, Germany
| | - C-C Steffens
- University of Heidelberg, Germany; Medical Care Center Flemmingstrasse, Chemnitz, Germany; Hämatologisch-onkologische Praxis Altona (HOPA), Hamburg, Germany; Oncological Practice Bethanien, Frankfurt, Germany; Praxisklinik Krebsheilkunde für Frauen, Berlin, Germany; University of Münster, Germany; MVZ Ostehessen Onkologie, Fulda, Germany; St. Elisabeth-Hospital, Cologne, Germany; Klinik Dr. Hancken, Stade, Germany; Gynäkologisch-onkologische Schwerpunktpraxis Schubert, Scheibenberg, Germany; Oncologische Praxisgemeinschaft, Berlin, Germany; Onkologische Schwerpunktpraxis Hof, Hof, Germany; University Hospital, Mainz, Germany
| | - R Schubert
- University of Heidelberg, Germany; Medical Care Center Flemmingstrasse, Chemnitz, Germany; Hämatologisch-onkologische Praxis Altona (HOPA), Hamburg, Germany; Oncological Practice Bethanien, Frankfurt, Germany; Praxisklinik Krebsheilkunde für Frauen, Berlin, Germany; University of Münster, Germany; MVZ Ostehessen Onkologie, Fulda, Germany; St. Elisabeth-Hospital, Cologne, Germany; Klinik Dr. Hancken, Stade, Germany; Gynäkologisch-onkologische Schwerpunktpraxis Schubert, Scheibenberg, Germany; Oncologische Praxisgemeinschaft, Berlin, Germany; Onkologische Schwerpunktpraxis Hof, Hof, Germany; University Hospital, Mainz, Germany
| | - A Widing
- University of Heidelberg, Germany; Medical Care Center Flemmingstrasse, Chemnitz, Germany; Hämatologisch-onkologische Praxis Altona (HOPA), Hamburg, Germany; Oncological Practice Bethanien, Frankfurt, Germany; Praxisklinik Krebsheilkunde für Frauen, Berlin, Germany; University of Münster, Germany; MVZ Ostehessen Onkologie, Fulda, Germany; St. Elisabeth-Hospital, Cologne, Germany; Klinik Dr. Hancken, Stade, Germany; Gynäkologisch-onkologische Schwerpunktpraxis Schubert, Scheibenberg, Germany; Oncologische Praxisgemeinschaft, Berlin, Germany; Onkologische Schwerpunktpraxis Hof, Hof, Germany; University Hospital, Mainz, Germany
| | - C Kasper
- University of Heidelberg, Germany; Medical Care Center Flemmingstrasse, Chemnitz, Germany; Hämatologisch-onkologische Praxis Altona (HOPA), Hamburg, Germany; Oncological Practice Bethanien, Frankfurt, Germany; Praxisklinik Krebsheilkunde für Frauen, Berlin, Germany; University of Münster, Germany; MVZ Ostehessen Onkologie, Fulda, Germany; St. Elisabeth-Hospital, Cologne, Germany; Klinik Dr. Hancken, Stade, Germany; Gynäkologisch-onkologische Schwerpunktpraxis Schubert, Scheibenberg, Germany; Oncologische Praxisgemeinschaft, Berlin, Germany; Onkologische Schwerpunktpraxis Hof, Hof, Germany; University Hospital, Mainz, Germany
| | - M. Schmidt
- University of Heidelberg, Germany; Medical Care Center Flemmingstrasse, Chemnitz, Germany; Hämatologisch-onkologische Praxis Altona (HOPA), Hamburg, Germany; Oncological Practice Bethanien, Frankfurt, Germany; Praxisklinik Krebsheilkunde für Frauen, Berlin, Germany; University of Münster, Germany; MVZ Ostehessen Onkologie, Fulda, Germany; St. Elisabeth-Hospital, Cologne, Germany; Klinik Dr. Hancken, Stade, Germany; Gynäkologisch-onkologische Schwerpunktpraxis Schubert, Scheibenberg, Germany; Oncologische Praxisgemeinschaft, Berlin, Germany; Onkologische Schwerpunktpraxis Hof, Hof, Germany; University Hospital, Mainz, Germany
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Hatlapatka T, Lavrentieva A, Moretti P, Hass R, Marquardt N, Jacobs R, Kasper C. Shaping the microenvironment of umbilical cord-derived mesenchymal stem cell-like cells. J Stem Cells Regen Med 2010; 6:101-102. [PMID: 24693117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Affiliation(s)
- T Hatlapatka
- Leibniz Universität Hannover, Institut für Technische Chemie , Hannover, Germany
| | - A Lavrentieva
- Leibniz Universität Hannover, Institut für Technische Chemie , Hannover, Germany
| | - P Moretti
- Leibniz Universität Hannover, Institut für Technische Chemie , Hannover, Germany
| | - R Hass
- Medizinische Hochschule Hannover, Klinik für Frauenheilkunde und Geburtshilfe, AG Biochemie und Tumorbiologie , Hannover, Germany
| | - N Marquardt
- Medizinische Hochschule Hannover, Klinik für Immunologie und Rheumatologie , Hannover, Germany
| | - R Jacobs
- Medizinische Hochschule Hannover, Klinik für Immunologie und Rheumatologie , Hannover, Germany
| | - C Kasper
- Leibniz Universität Hannover, Institut für Technische Chemie , Hannover, Germany
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Suvandzhieva B, Böhm S, Moretti P, Scheper T, Kasper C. Auswirkung mechanischer Stimulation auf die osteogene Differenzierung von humanen mesenchymalen Stammzellen. CHEM-ING-TECH 2010. [DOI: 10.1002/cite.201050078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Landgrebe D, Behr L, Moretti P, Kasper C, Scheper T. Identifizierung und Isolierung von hochproduktiven Zellen mittels Durchflusszytometrie. CHEM-ING-TECH 2010. [DOI: 10.1002/cite.201050194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Ran C, Lavrentieva A, Kasper C, Scheper T. Biologic Activity, Lyophilization and Long-Term Stability of a Basic Fibroblast Growth Factor Produced in Escherichia coli. CHEM-ING-TECH 2010. [DOI: 10.1002/cite.201050214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Lavrentieva A, Scheper T, Hass R, Kasper C. Wirkung der Hypoxie auf Zellkulturbedingungen von Nabelschnur-abgeleiteten Stammzellen. CHEM-ING-TECH 2010. [DOI: 10.1002/cite.201050191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Böhm S, Kress S, Marten D, Kasper C, Scheper T. Dynamische Kultivierung adiposer Stammzellen im Drehbettreaktor. CHEM-ING-TECH 2010. [DOI: 10.1002/cite.201050673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Ralla K, Sohling U, Sander F, Kasper C, Ruf F, Scheper T. Application of Inorganic Adsorbents as Ion Exchangers for Protein Purification. CHEM-ING-TECH 2010. [DOI: 10.1002/cite.201050739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Kasper C, Bloh J, Wagner S, Bahnemann D, Scheper T. Untersuchungen zur Zytotoxizität von photokatalytisch aktiven Titandioxid-Nanopartikeln. CHEM-ING-TECH 2010. [DOI: 10.1002/cite.200900057] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Estrin Y, Kasper C, Diederichs S, Lapovok R. Accelerated growth of preosteoblastic cells on ultrafine grained titanium. J Biomed Mater Res A 2009; 90:1239-42. [DOI: 10.1002/jbm.a.32174] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Chen R, Tomala M, Lavrentieva A, Majore I, Kasper C, Stahl F. Expression and Purification of Recombinant human basic Fibroblast Growth Factor from Fed-Batch Cultivation of E. coli. CHEM-ING-TECH 2009. [DOI: 10.1002/cite.200950644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Ralla K, Sohling U, Suck K, Kasper C, Ruf F, Scheper T. Anwendung smektitischer Tonminerale zur Bindung und Aufreinigung von Proteinen. CHEM-ING-TECH 2009. [DOI: 10.1002/cite.200950410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Ralla K, Anton F, Scheper T, Kasper C. Simultane Bestimmung von IgG, Insulin und Transferrin in Kulturmedium mittels Tandem-LC. CHEM-ING-TECH 2009. [DOI: 10.1002/cite.200950263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Abstract
Primate social systems are difficult to characterize, and existing classification schemes have been criticized for being overly simplifying, formulated only on a verbal level or partly inconsistent. Social network analysis comprises a collection of analytical tools rooted in the framework of graph theory that were developed to study human social interaction patterns. More recently these techniques have been successfully applied to examine animal societies. Primate social systems differ from those of humans in both size and density, requiring an approach that puts more emphasis on the quality of relationships. Here, we discuss a set of network measures that are useful to describe primate social organization and we present the results of a network analysis of 70 groups from 30 different species. For this purpose we concentrated on structural measures on the group level, describing the distribution of interaction patterns, centrality, and group structuring. We found considerable variability in those measures, reflecting the high degree of diversity of primate social organizations. By characterizing primate groups in terms of their network metrics we can draw a much finer picture of their internal structure that might be useful for species comparisons as well as the interpretation of social behavior.
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Affiliation(s)
- Claudia Kasper
- Ethologie des Primates, Département Ecologie, Physiologie et Ethologie (DEPE) IPHC (CNRS UMR 7178), Strasbourg Cedex, France.
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Rober M, Walter J, Vlakh E, Stahl F, Kasper C, Tennikova T. New 3-D microarray platform based on macroporous polymer monoliths. Anal Chim Acta 2009; 644:95-103. [DOI: 10.1016/j.aca.2009.04.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2008] [Revised: 04/03/2009] [Accepted: 04/06/2009] [Indexed: 10/20/2022]
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Abstract
Animal cooperation has puzzled biologists for a long time as its existence seems to contravene the basic notion of evolutionary biology that natural selection favours 'selfish' genes that promote only their own well-being. Evolutionary game theory has shown that cooperators can prosper in populations of selfish individuals if they occur in clusters, interacting more frequently with each other than with the selfish. Here we show that social networks of primates possess the necessary social structure to promote the emergence of cooperation. By simulating evolutionary dynamics of cooperative behaviour on interaction networks of 70 primate groups, we found that for most groups network reciprocity augmented the fixation probability for cooperation. The variation in the strength of this effect can be partly explained by the groups' community modularity-a network measure for the groups' heterogeneity. Thus, given selective update and partner choice mechanisms, network reciprocity has the potential to explain socially learned forms of cooperation in primate societies.
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Affiliation(s)
- Bernhard Voelkl
- Departement Ecologie, Physiologie et Ethologie, IPHC, CNRS, Strasbourg, France.
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Graf AM, Steinhof R, Lotz M, Tippkötter N, Kasper C, Beutel S, Ulber R. Downstream-Processing mit Membranadsorbern zur Isolierung nativer Proteinfraktionen aus Kartoffelfruchtwasser. CHEM-ING-TECH 2009. [DOI: 10.1002/cite.200800139] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Marten D, Suck K, Diederichs S, Röker S, van Griensven M, Leschke C, Hoffmeister H, Kasper C. 3D-Zellkultivierung im Z® RP-System. CHEM-ING-TECH 2008. [DOI: 10.1002/cite.200800094] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Kökpinar Ö, Walter JG, Anton F, Mönster A, Kasper C, Stahl F, Scheper T. Membranadsorbersysteme in der Proteinaufreinigung: Screening-Möglichkeiten. CHEM-ING-TECH 2008. [DOI: 10.1002/cite.200700181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Allmeling C, Jokuszies A, Reimers K, Kall S, Choi CY, Brandes G, Kasper C, Scheper T, Guggenheim M, Vogt PM. Spider silk fibres in artificial nerve constructs promote peripheral nerve regeneration. Cell Prolif 2008; 41:408-20. [PMID: 18384388 DOI: 10.1111/j.1365-2184.2008.00534.x] [Citation(s) in RCA: 104] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
OBJECTIVE In our study, we describe the use of spider silk fibres as a new material in nerve tissue engineering, in a 20-mm sciatic nerve defect in rats. MATERIALS AND METHODS We compared isogenic nerve grafts to vein grafts with spider silk fibres, either alone or supplemented with Schwann cells, or Schwann cells and matrigel. Controls, consisting of veins and matrigel, were transplanted. After 6 months, regeneration was evaluated for clinical outcome, as well as for histological and morphometrical performance. RESULTS Nerve regeneration was achieved with isogenic nerve grafts as well as with all constructs, but not in the control group. Effective regeneration by isogenic nerve grafts and grafts containing spider silk was corroborated by diminished degeneration of the gastrocnemius muscle and by good histological evaluation results. Nerves stained for S-100 and neurofilament indicated existence of Schwann cells and axonal re-growth. Axons were aligned regularly and had a healthy appearance on ultrastructural examination. Interestingly, in contrast to recently published studies, we found that bridging an extensive gap by cell-free constructs based on vein and spider silk was highly effective in nerve regeneration. CONCLUSION We conclude that spider silk is a viable guiding material for Schwann cell migration and proliferation as well as for axonal re-growth in a long-distance model for peripheral nerve regeneration.
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Affiliation(s)
- C Allmeling
- Department of Plastic, Hand- and Reconstructive Surgery, Medical School Hannover, Hannover, Germany.
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Korzhikov V, Roeker S, Vlakh E, Kasper C, Tennikova T. Synthesis of Multifunctional Polyvinylsaccharide Containing Controllable Amounts of Biospecific Ligands. Bioconjug Chem 2008; 19:617-25. [DOI: 10.1021/bc700383w] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- V. Korzhikov
- Institute of Macromolecular Compounds, Russian Academy of Science, Bolshoy pr. 31, 199004, St. Petersburg, Russia, and Institut für Technische Chemie der Universität Hannover, Callinstr. 3, 30167 Hannover, Germany
| | - S. Roeker
- Institute of Macromolecular Compounds, Russian Academy of Science, Bolshoy pr. 31, 199004, St. Petersburg, Russia, and Institut für Technische Chemie der Universität Hannover, Callinstr. 3, 30167 Hannover, Germany
| | - E. Vlakh
- Institute of Macromolecular Compounds, Russian Academy of Science, Bolshoy pr. 31, 199004, St. Petersburg, Russia, and Institut für Technische Chemie der Universität Hannover, Callinstr. 3, 30167 Hannover, Germany
| | - C. Kasper
- Institute of Macromolecular Compounds, Russian Academy of Science, Bolshoy pr. 31, 199004, St. Petersburg, Russia, and Institut für Technische Chemie der Universität Hannover, Callinstr. 3, 30167 Hannover, Germany
| | - T. Tennikova
- Institute of Macromolecular Compounds, Russian Academy of Science, Bolshoy pr. 31, 199004, St. Petersburg, Russia, and Institut für Technische Chemie der Universität Hannover, Callinstr. 3, 30167 Hannover, Germany
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Anton F, Suck K, Diederichs S, Behr L, Hitzmann B, vanGriensven M, Scheper T, Kasper C. Design and Characterization of a Rotating Bed System Bioreactor for Tissue Engineering Applications. Biotechnol Prog 2008; 24:140-7. [DOI: 10.1021/bp070241b] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Abstract
In this paper we describe tolerated mouth-to-mouth food transfers in captive adult common marmosets, where an animal approached a conspecific that has recently received a piece of food, opened the other's mouth forcefully, and picked food pieces out of it. Tolerated mouth-to-mouth food transfers occurred between animals of both sexes. They were observed when the possessor was subordinate as well as when it was dominant, and in four dyads they were observed in both directions. We argue that this behaviour might have a social function and that the cooperative breeding system of marmosets might have facilitated its evolution.
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Affiliation(s)
- Claudia Kasper
- Department for Neurobiology and Cognition Research, University of Vienna, Althanstrasse 14, 1090, Vienna, Austria
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Harkensee D, Kökpinar Ö, Walter J, Kasper C, Beutel S, Reif OW, Scheper T, Ulber R. Fast Screening for the Purification of Proteins Using Membrane Adsorber Technology. Eng Life Sci 2007. [DOI: 10.1002/elsc.200720194] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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Diederichs S, Weyand B, Kasper C, Scheper T, van Griensven M. Mechanical stimulation of adipose tissue derived mesenchymal stem cells. J Stem Cells Regen Med 2007; 2:149-150. [PMID: 24692964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Affiliation(s)
- S Diederichs
- Institut fur Technische Chemie, Universitat Hannover , Callinstrase 3, 30167 Hannover, Germany ; Ludwig Boltzmann Institute for Experimental and Clinical Traumatology , Donaueschingenstrase 13, A-1200 Vienna, Austria
| | - B Weyand
- Klinik fur Plastische, Hand- und Wiederherstellende Chirurgie, Medical School Hannover , Podbielskistrase 380, 30659 Hannover, Germany
| | - C Kasper
- Institut fur Technische Chemie, Universitat Hannover , Callinstrase 3, 30167 Hannover, Germany
| | - T Scheper
- Institut fur Technische Chemie, Universitat Hannover , Callinstrase 3, 30167 Hannover, Germany
| | - M van Griensven
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology , Donaueschingenstrase 13, A-1200 Vienna, Austria
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Anton F, Burzlaff A, Kasper C, Brückerhoff T, Scheper T. Preliminary Study towards the Use of In-situ Microscopy for the Online Analysis of Microcarrier Cultivations. Eng Life Sci 2007. [DOI: 10.1002/elsc.200620172] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Scheper T, Kökpinar Ö, Anton F, Behr L, Kasper C, Zeidler R. High-Throughput-Downstream-Screening-System für Proteinaufreinigung. CHEM-ING-TECH 2006. [DOI: 10.1002/cite.200650176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Bruns S, Stark Y, Wieland M, Stahl F, Kasper C, Scheper T. Effizientes Screening-System für neue Biomaterialien im Tissue Engineering. CHEM-ING-TECH 2006. [DOI: 10.1002/cite.200650046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Riechers D, Anton F, Glindkamp A, Behr L, Kasper C, Scheper T. Optimierung eines Systems zur blasenfreien Begasung von Säugerzellkulturen. CHEM-ING-TECH 2006. [DOI: 10.1002/cite.200650273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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