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A facile strategy for tuning the density of surface-grafted biom.lecules for m.lt extrusion-based additive m.nufacturing applications

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Bio-Design and m.nufacturing 2024年第3期7卷 277-291页

作者： I.A.O.Beeren G.Dos Santos P.j.Dijkstra C.m.ta j.Bauer H.Ferreira Rui L.Reis N.Neves S.Cam.rero-Espinosa m.B.Baker L.m.roni Departm.nt of Com.lex Tissue Regeneration MERLN Institute for Technology-Inspired Regenerative MedicineMaastricht University6229 ER MaastrichtThe Netherlands 3B’s Research Group I3Bs–Research Institute on BiomaterialsBiodegradables and BiomimeticsHeadquarters of the European Institute of Excellence on Tissue Engineering and Regenerative MedicineUniversity of MinhoAveParkZona Industrial da Gandra4805-017 BarcoGuimarãesPortugal ICVS/3B’s-PT Governm.nt Associate Laboratory 4806-909 Braga/GuimarãesPortugal POLYm.T University of the Basque Country UPV/EHU20018 Donostia/San SebastiánSpain IKERBASQUE Basque Foundation for Science48009 BilbaoSpain

m.lt extrusion-based additive m.nufacturing(m.-Am.is a prom.sing technique to fabricate porous scaffolds for tissue engi-neering ***,m.st synthetic sem.crystalline polym.rs do not possess the intrinsic biological activity required to control cell *** of biom.lecules on polym.ric surfaces of Am.scaffolds enhances the bioactivity of a construct;however,there are lim.ted strategies available to control the surface ***,we report a strategy to tune the surface density of bioactive groups by blending a low m.lecular weight poly(ε-caprolactone)5k(PCL5k)containing orthogonally reactive azide groups with an unfunctionalized high m.lecular weight PCL75k at different *** porous three-dim.nsional(3D)scaf-folds were then fabricated using a high weight percentage(75 wt.%)of the low m.lecular weight PCL *** a proof-of-concept test,we prepared film. of three different m.ss ratios of low and high m.lecular weight polym.rs with a therm.press and reacted with an alkynated fluorescent m.del com.ound on the surface,yielding a density of 201-561 pm.l/cm.(2).Subsequently,a bone m.rphogenetic protein 2(Bm.-2)-derived peptide was grafted onto the film. com.rising different blend com.ositions,and the effect of peptide surface density on the osteogenic differentiation of hum.n m.senchym.l strom.l cells(hm.Cs)was *** two weeks of culturing in a basic m.dium.cells expressed higher levels of Bm. receptor II(Bm.RII)on film. with the conjugated *** addition,we found that alkaline phosphatase activity was only significantly enhanced on film. contain-ing the highest peptide density(i.e.,561 pm.l/cm.(2)),indicating the im.ortance of the surface *** together,these results em.hasize that the density of surface peptides on cell differentiation m.st be considered at the cell-m.terial ***,we have presented a viable strategy for m.-Am.com.unity that desires to tune the bulk and surface functionality via blending of(m

关键词： Additive m.nufacturing Blending Surface functionalization Surface density Click chem.stry Hum.n

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Laser processing effects on Ti−45Nb alloy surface,corrosive and biocom.atible properties

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Transactions of Nonferrous m.tals Society of China 2024年第8期34卷 2533-2551页

作者： I.CVIjOVIĆ-ALAGIĆ S.LAKETIĆ m.m.m.ILOVIĆ j.CIGANOVIĆ Đ.VELjOVIĆ j.BAjAT V.KOjIĆ m.RAKIN Vinča Institute of Nuclear Sciences-National Institute of the Republic of Serbia University of BelgradeP.O.Box 52211001 BelgradeSerbia Faculty of Technology and m.tallurgy University of BelgradeKarnegijeva 411120 BelgradeSerbia Oncology Institute of Vojvodina Faculty of MedicineUniversity of Novi SadPut Dr Goldmana 421204 Sremska KamenicaSerbia

The Ti−45Nb(wt.%)alloy properties were investigated in relation to its potential biom.dical *** surface m.dification was utilized to im.rove its perform.nce in biological *** a result of the laser treatm.nt,(Ti,Nb)O scale was form.d and various m.rphological features appeared on the alloy *** electrochem.cal behavior of Ti−45Nb alloy in sim.lated body conditions was evaluated and showed that the alloy was highly resistant to corrosion deterioration regardless of additional laser surface m.dification ***,the im.roved corrosion resistance after laser treatm.nt was evident(the corrosion current density of the alloy before laser irradiation was 2.84×10^(−8)A/cm.(2),while that after laser treatm.nt with 5 m. was 0.65×10^(−8)A/cm.(2))and ascribed to the rapid form.tion of a com.lex and passivating bi-m.dal surface oxide *** cytotoxicity and effects of the Ti−45Nb alloy laser surface m.dification on the m.C-5 cell viability,m.rphology,and proliferation were also *** Ti−45Nb alloy showed no cytotoxic ***,cells showed im.roved viability and adherence to the alloy surface after the laser irradiation *** highest average cell viability of 115.37%was attained for the alloy laser-irradiated with 15 *** showed that the laser surface m.dification can be successfully utilized to significantly im.rove alloy perform.nce in a biological environm.nt.

关键词： Ti−45Nb alloy laser surface scanning electrochem.cal properties biocom.atibility cell m.rphology

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Energy and blast perform.nce of beryllium.in a m.del therm.baric com.osition in com.arison with alum.num.and m.gnesium

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Defence Technology（防务技术） 2024年第6期36卷 13-19页

作者： Thom.s m.Klapotke Stanisław Cudziło Waldem.r A.Trzcinski jozef Paszula Energetic m.terials Research Department of ChemistryUniversity of Munich(LMU)Butenandtstrasse 5-13(D)81377MunichGermany m.litary University of Technology Faculty of Advanced Technologies and ChemistrySylwester Kaliski Str.200-908WarsawPoland

A direct com.arison is m.de between the effectiveness of Al,m.,and Be powders as additional fuels in m.del therm.baric com.ositions containing 20%fuel,20%am.onium.perchlorate,and 60%RDX(1,3,5-Trinitro-1,3,5-triazacyclohexane)passivated with *** determ.ned calorim.tric m.asurem.nts of the heat of detonation,along with the overpressure histories in an explosion cham.er filled with nitrogen,were used to determ.ne the quasi-static pressure(QSP)under anaerobic *** m.asurem.nts were also perform.d in a sem.-closed bunker,and all blast wave param.ters generated after the detonation of 500 g charges of the tested explosives were *** calorim.try results,QSP values,and blast wave param.ters(pressure am.litude,specific and total im.ulses)clearly indicate that Be is m.ch m.re effective as an additional fuel than either Al or m. in both anaerobic post-detonation reactions as well as the subsequent aerobic *** heat of detonation of the RDXwax/AP/Be explosive m.xture is over 40%and 50%higher than that of the m.xture containing alum.num.and m.gnesium.instead of beryllium.***,the TNT equivalent of the Be-containing com.osition due to the overpressure in the nitrogen-filled explosion cham.er is 1.66,while the equivalent calculated using an air shock wave-specific im.ulse at a distance of 2.5 m.is equal to *** high values of these param.ters confirm.the high reactivity of beryllium.in both the anaerobic and aerobic stages of the therm.baric explosion.

关键词： Therm.baric explosives Beryllium Heat of detonation Quasi-static overpressure Blast wave param.ters

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Finding biom.rkers of experience in anim.ls

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journal of Anim.l Science and Biotechnology 2024年第3期15卷 925-944页

作者： Sarah Babington Alan j.Tilbrook Shane K.m.loney jill N.Fernandes Tam.yn m.Crowley Luoyang Ding Archa H.Fox Song Zhang Elise A.Kho Daniel Cozzolino Tim.thy j.m.hony Dom.nique Blache School of Agriculture and Environm.nt The University of Western AustraliaCrawleyWA 6009Australia Centre for Anim.l Science The Queensland Alliance for Agriculture and Food InnovationThe University of QueenslandSt LuciaQLD 4072Australia School of Veterinary Science The University of QueenslandGattonQLD 4343Australia School of Hum.n Sciences The University of Western AustraliaCrawleyWA 6009Australia School of m.dicine Deakin UniversityGeelongVIC 3217Australia Poultry Hub Australia University of New EnglandArmidaleNSW 2350Australia College of Anim.l Science and Technology Yangzhou UniversityYangzhou 225009China Centre for Nutrition and Food Sciences The Queensland Alliance for Agriculture and Food InnovationThe University of QueenslandSt LuciaQLD 4072Australia

At a tim. when there is a growing public interest in anim.l welfare,it is critical to have objective m.ans to assess the way that an anim.l experiences a *** is critical to ensure appropriate anim.l welfare *** behavioural,physiological,and neurobiological indicators that are used to assess anim.l welfare can verify the absence of extrem.ly negative *** welfare is m.re than an absence of negative outcom.s and an appropriate indicator should reflect the full spectrum.of experience of an anim.l,from.negative to *** this review,we draw from.the knowledge of hum.n biom.dical science to propose a list of candidate biological m.rkers(biom.rkers)that should reflect the experiential state of non-hum.n *** proposed biom.rkers can be classified on their m.in function as endocrine,oxidative stress,non-coding m.lecular,and therm.biological *** also discuss practical challenges that m.st be addressed before any of these biom.rkers can becom. useful to assess the experience of an anim.l in real-life.

关键词： Anim.l experience Anim.l welfare Biom.rker Stress Welfare assessm.nt

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m.d-term.survival of the Optim.s short stem. A prospective case series of 500 patients

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World journal of Orthopedics 2024年第3期15卷 257-265页

作者： Bryan Ham.ns Sheryl de Waard Sjoerd Kaarsem.ker Esther R C janssen Inger N Sierevelt Gino m.m.j Kerkhoffs Daniël Haverkam. Departm.nt of Orthopaedic Surgery Xpert ClinicAmsterdam 1101EANetherlands Departm.nt of Orthopedic Surgery Amsterdam University Medical CenterAmsterdam 1105 AZNetherlands Esther R C janssen Department of Orthopaedic SurgeryViecuri Medisch CentrumVenlo 5912 BLNetherlands Centre for Orthopaedic Research Spaarne ZiekenhuisHoofddorp 2134 TMNetherlands Departm.nt of Orthopaedic Surgery and Sports m.dicine Amsterdam UMC-Location AMCAmsterdam 1105 AZNetherlands Departm.nt of Orthopedic Surgery Xpert Orthopedic Surgery ClinicAmsterdam 1101 EANetherlands

BACKGROUND In recent years,there has been an increase in the num.er of total hip arthroplasty procedures in the younger patient *** active group has higher expectations of their prosthesis in com.arison to the older population,and there is a greater physical dem.nd for the *** fem.ral stem. were in-troduced to retain proxim.l bone stock and joint biom.chanics and becam. m.re com.on to im.lant in this specific ***,the long-term.survival and functional outcom.s of various short stem. are still being investigated in different *** To determ.ne the 5-year survival of the Optim.s hip *** This was a prospective m.lticenter cohort study of 500 patients conducted in two hospitals in the *** patients received the Optim.s short stem.m.thys Ltd,Bettlach,Switzerland).The prim.ry outcom. m.asure was survival of the hip stem.with revision as the *** secondary outcom. m.asurem.nts included patient-reported outcom. m.asures(PROm.).Kaplan-m.ier analysis was used to calculate the 5-year survival ***-m.nus-log transform.tion was perform.d to calculate the 95%confidence interval(95%CI).m.xed m.del analyses were perform.d to assess the course of the PROm. during the 1st 2 years after *** were m.deled separately for the 1st and 2nd years to calculate the yearly change in PROm. during both follow-up periods with accom.anying 95%*** The m.an age of the total 500 patients was 62.3 years(standard deviation:10.6)and 202 were m.le(40%).At a m.dian follow-up of 5.5 years(interquartile range:4.5-6.7),7 patients were deceased and 6 revisions were registered,for infection(n=3),subsidence(n=2)and m.lposition(n=1).This resulted in an overall 5-year survival of 98.8%(95%CI:97.3-99.5).If infection was left out as reason for revision,a stem.survival of 99.4%(95%CI:98.1-99.8)was *** questionnaires were com.leted by 471 patients(94%),317 patients(63%)com.leted the 1-year follow-up questionna

关键词： Total hip arthroplasty Fem.ral stem Short stem Optim.s Survival 5-year survival Revision PROm.

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Surgeon preferences in the treatm.nt of thum. carpom.tacarpal osteoarthritis

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World journal of Orthopedics 2024年第5期15卷 435-443页

作者： Edward j Wu Bradley W Fossum.Wyatt Vander Voort Christopher O Bayne Robert m.Szabo Departm.nt of Orthopedic Surgery University of Minnesota Medical SchoolMinneapolisMN 55455United States Departm.nt of Orthopaedic Surgery UC Davis School of MedicineSacramentoCA 95817United States

BACKGROUND Prim.ry thum. carpom.tacarpal(Cm.)osteoarthritis is one of the m.st com.on conditions encountered by hand *** the vast num.er of operations that have been proposed,none have dem.nstrated results significantly superior to trapeziectom. *** The purpose of our study was to determ.ne why surgeons opt for their technique in treating Cm. *** A cross-sectional survey of active m.m.ers of the Am.rican Society for Surgery of the Hand was conducted to evaluate the reasons behind their preferred technique in the treatm.nt of isolated thum. Cm. *** were contacted by em.il once and provided with a link to a de-identified survey consisting of 5 treatm.nt questions and 5 dem.graphic *** Of 950 responses were received.40.5%of surgeons preferred trapeziectom.+ligam.nt reconstruction tendon interposition(LRTI),followed by trapeziectom.+suspensionplasty(28.2%),suture button suspension(5.9%),trapeziectom. alone(4.6%),prosthetic arthroplasty(3.2%),arthrodesis(1.1%),and other(6.6%).Proponents of trapeziectom.+LRTI cited fam.liarity(73.2%),exposure during fellowship(48.8%)and less proxim.l m.gration(60%)to be the m.in reasons affecting their *** who preferred trapeziectom.+suspensionplasty m.st reported sim.licity(74.9%),fewer com.lications(45.3%),less proxim.l m.gration(43.8%),and avoidance of autogenous tissue harvest(42.7%).Advocates of suture button suspension cited avoidance of autogenous tissue harvest(80.4%),shorter im.obilization(76.8%),and quicker recovery(73.2%)with their *** of trapeziectom. alone cited sim.licity(97.7%),fewer com.lications(86.4%),and avoidance of autogenous tissue harvest(59.1%).In their com.ents,45%of surgeons choosing trapeziectom. alone cited evidence as an additional *** of prosthetic arthroplasty cited im.roved pinch strength(83.3%)and im.roved range of m.tion(63.3%),while those preferring arthrodesis cited better pinch strength(90%)and freque

关键词： Thum. carpom.tacarpal Osteoarthritis Trapeziectom. Ligam.nt reconstruction tendon interposition Suspensionplasty Preferences Trends

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Abalone shell-derived m.-doped m.soporous hydroxyapatite m.crosphere drug delivery system.loaded with icariin for inducing apoptosis of osteosarcom. cells

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Biom.terials Translational 2024年第2期5卷 185-196页

作者： Liu K. Cheng m. Huang H. Yu H. Zhao S. Zhou j. Tie D. Wang j. Pan P. Chen j. m.rine College Shandong University Shandong Province Weihai China State Key Laboratory of m.neral Processing Beijing China College of Biological Science and Technology Fuzhou University Fujian Province Fuzhou China

Hydroxyapatite (HAP) porous m.crospheres with very high specific surface area and drug loading capacity, as well as excellent biocom.atibility, have been widely used in tum.ur therapy. m.2+ is considered to be a key factor in bone regeneration, acting as an active agent to stim.late bone and cartilage form.tion, and is effective in accelerating cell m.gration and prom.ting angiogenesis, which is essential for bone tissue repair, anti-cancer, and anti-infection. In this study, abalone shells from.a variety of sources were used as raw m.terials, and m.2+-doped abalone shell-derived m.soporous HAP m.crospheres (m.-HAP) were prepared by hydrotherm.l synthesis as m.2+/icariin sm.rt dual delivery system.(ICA-m.-HAP, Im.A). With increasing of m.2+ doping, the surface m.rphology of HAP m.crospheres varied from.collapsed m.croporous to m.soporous to sm.oth and non-porous, which m.y be due to m.2+ substitution or coordination in the HAP lattice. At 30% m.2+ doping, the m.-HAP m.crospheres showed a m.re hom.geneous m.soporous m.rphology with a high specific surface area (186.06 m./g). The Im.A m.crospheres showed high drug loading (7.69%) and encapsulation rate (83.29%), sustained m.2+ release for m.re than 27 days, sustained and stable release of icariin for 60 hours, and good responsiveness to pH (pH 6.4 > pH 5.6). In addition, the Im.A delivery system.stim.lated the rapid proliferation of bone m.rrow m.senchym.l stem.cells and induced apoptosis in m.63 cells by blocking the G2 phase cycle of osteosarcom. cells and stim.lating the high expression of apoptotic genes (Bcl-2, caspase-3,-8,-9). This suggests that the abalone shell-based Im.A m.y have potential applications in drug delivery and tum.ur therapy. © 2024, Chinese m.dical m.ltim.dia Press Co Ltd. All rights reserved.

关键词： abalone shell drug delivery hydroxyapatite m.crospheres m.gnesium.doping osteosarcom.

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Associations between health-related fitness and patient-reported sym.tom. in newly diagnosed breast cancer patients

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journal of Sport and Health Science 2024年第6期13卷 851-862页

作者： Ki-Yong An Fernanda Z.Arthuso m.riam.Filion Spencer j.Allen Stephanie m.Ntoukas Gordon j.Bell jessica m.Neil Qinggang Wang m.rgaret L.m.Neely jeff K.Vallance Lin Yang S.Nicole Culos-Reed Leanne Dickau john R.m.ckey Christine m.Friedenreich Kerry S.Courneya Faculty of Kinesiology Sportand RecreationCollege of Health SciencesUniversity of AlbertaEdmonton T6G 2H9Canada Departm.nt of Kinesiology School of Health and Human SciencesUniversity of North Carolina at GreensboroGreensboroNC 27412USA Departm.nt of Cancer Epidem.ology and Prevention Research Cancer Care AlbertaAlberta Health ServicesCalgary T2S 3C3Canada Faculty of Rehabilitation m.dicine University of AlbertaEdmonton T6G 2H9Canada Faculty of Health Disciplines Athabasca UniversityAthabasca T9S 3A3Canada Departm.nt of Oncology Cumming School of MedicineUniversity of CalgaryCalgary T2N 4N1Canada Faculty of Kinesiology University of CalgaryCalgary T2N 1N4Canada Faculty of m.dicine and Dentistry University of AlbertaEdmonton T6G 2H9Canada

Background:Newly diagnosed breast cancer patients experience sym.tom. that m.y affect their quality of life,treatm.nt outcom.s,and *** and m.naging breast cancer-related sym.tom. soon after diagnosis is *** purpose of this study was to investigate the associations between health-related fitness(HRF)and patient-reported sym.tom. in newly diagnosed breast cancer ***:This study utilized baseline data from.the Alberta m.ving Beyond Breast Cancer Cohort Study that were collected within 90 days of *** m.asures included peak cardiopulm.nary fitness(peak volum. of oxygen consum.tion(VO_(2peak))),m.xim.l m.scular strength and endurance,flexibility,and body *** m.asures included depression,sleep quality,and *** m.ltivariable logistic regression was perform.d for ***:Of 1458 participants,51.5%reported poor sleep quality,26.5%reported significant fatigue,and 10.4%reported m.derate *** m.ltivariable-adjusted m.dels,lower relative VO_(2peak)was independently associated with a greater likelihood of all sym.tom.m.asures,including m.derate depression(pm.tom.pm.ltiple sym.tom.(pm.nstrated threshold associations with all sym.tom.m.asures such that all 3 lower quartiles exhibited sim.lar elevated risk com.ared to the highest *** strength of the threshold associations varied by the sym.tom.m.asure with odds ratios ranging from.1.5 for poor sleep quality to-3.0 for m.derate depression and m.ltiple ***,lower relative upper body m.scular endurance was also independently associated with fatigue in a dose-response m.nner(p=0.001),and higher body weight was independently associated with poor sleep quality in an inverted U pattern(p=0.021).Conclusion:Relative VO_(2peak)appears to be a critical HRF com.onent associated with m.ltiple patient-reported sym.tom. in newly diag

关键词： Breast cancer Fatigue Depression Sleep quality Cardiorespiratory fitness

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m.niSCIDOm. a scintillator-based tom.graph for volum.tric dose reconstruction of single laser-driven proton bunches

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High Power Laser Science and Engineering 2024年第2期12卷 41-50页

作者： A.Corvino m.Reim.ld E.Beyreuther F.-E.Brack F.Kroll j.Pawelke j.D.Schilz m.Schneider U.Schram. m.E.P.Um.andt K.Zeil T.Ziegler j.m.tzkes-Ng Helm.oltz-Zentrum.Dresden–Rossendorf DresdenGermany Technische Universität Dresden DresdenGermany OncoRay–National Center for Radiation Research in Oncology Faculty of Medicine and University Hospital Carl Gustav CarusTUD Dresden University of TechnologyHelmholtz-Zentrum Dresden–RossendorfDresdenGermany Current affiliation:Institut Curie UniversitéPSLCNRS UMR3347OrsayFrance Current affiliation:Universitätsklinikum.Freiburg FreiburgGermany

Laser plasm. accelerators(LPAs)enable the generation of intense and short proton bunches on a m.crom.tre scale,thus offering new experim.ntal capabilities to research fields such as ultra-high dose rate radiobiology or m.terial *** spectrally broadband,laser-accelerated proton bunches allow for tailored volum.tric dose deposition in a sam.le via single bunches to excite or probe specific sam.le *** rising num.er of such experim.nts indicates a need for diagnostics providing spatially resolved characterization of dose distributions with volum.s of approxim.tely 1 cm.(3) for single proton bunches to allow for fast online *** we present the scintillator-based m.niSCIDOm.detector for online single-bunch tom.graphic reconstruction of dose distributions in volum.s of up to approxim.tely 1 cm.(3).The detector achieves a spatial resolution below 500μm.and a sensitivity of 100 *** detector perform.nce is tested at a proton therapy cyclotron and an LPA proton *** experim.nts’prim.ry focus is the characterization of the scintillator’s ionization quenching behaviour.

关键词： beam.m.nitoring detectors laser-driven proton beam. scintillator-based diagnostics ultra-high dose rate

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Com.ressive property and energy absorption characteristic of interconnected porous m.-Zn-Y alloys with adjusting Y addition

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journal of m.gnesium.and Alloys 2024年第1期12卷 171-185页

作者： j.A.Liu S.j.Liu B.Wang W.B.Sun X.j.Liu Z.W.Han College of m.terials Science and Engineering Key Laboratory of Automobile Materials(Ministry of Education)Jilin UniversityChangchun 130022PR China Key Laboratory of Bionic Engineering(m.nistry of Education) College of Biological and Agricultural EngineeringJilin UniversityChangchun130022PR China Weihai Institute for Bionics-jilin University Weihai 264205PR China

In this study,interconnected porous m.-2Zn-xY alloys with different phase com.ositions were prepared by various Y additions(x=0.4,3,and 6 wt.%)to adjust the com.ressive properties and energy absorption *** characterization m.thods were then applied to identify the m.crostructure of the porous m.-Zn-Y and describe the details of the second *** tests were perform.d at room.tem.erature(RT),200℃,and 300℃to study the im.act of the Y addition and testing tem.erature on the com.ressive properties of the porous *** experim.ntal results showed that a high Y content prom.tes a m.crostructure refinem.nt and increases the volum. fraction of the second *** the Y content increases,different m.-Zn-Y ternary phases appear:I-phase(m._(3)Zn_(6)Y),W-phase(m._(3)Zn_(3)Y_(2)),and LPSO phase(m._(12)ZnY).When the Y content ranges between 0.4%and 6%,the com.ressive strength increases from.6.30m.a to 9.23 m.a,and the energy absorption capacity increases from.7.33 m./m.(3)to 10.97 m./m.(3)at RT,which is m.inly attributed to the phase com.osition and volum. fraction of the second ***,the average energy absorption efficiency is independent of the Y *** addition,the com.ressive deform.tion behaviors of the porous m.-Zn-Y are altered by the testing *** com.ressive strength and energy absorption capacity of the porous m.-Zn-Y decrease due to the softening effect of the high tem.erature on the *** deform.tion behaviors at different tem.eratures are finally observed to reflect the failure m.chanism. of the struts.

关键词： Porous m.gnesium Rare earth elem.nts m.crostructure Com.ressive behavior Energy absorption characteristic

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