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Pagallies F, Labisch JJ, Wronska M, Pflanz K, Amann R. Efficient and scalable clarification of Orf virus from HEK suspension for vaccine development. Vaccine X 2024; 18:100474. [PMID: 38523620 PMCID: PMC10958475 DOI: 10.1016/j.jvacx.2024.100474] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 03/01/2024] [Accepted: 03/12/2024] [Indexed: 03/26/2024] Open
Abstract
The Orf virus (ORFV) is a promising vector platform for the generation of vaccines against infectious diseases and cancer, highlighted by its progression to clinical testing phases. One of the critical steps during GMP manufacturing is the clarification of crude harvest because of the enveloped nature and large size of ORFV. This study presents the first description of ORFV clarification process from a HEK suspension batch process. We examined various filter materials, membrane pore sizes, harvest timings, and nuclease treatments. Employing the Ambr® crossflow system for high-throughput, small-volume experiments, we identified polypropylene-based Sartopure® PP3 filters as ideal. These filters, used in two consecutive stages with reducing pore sizes, significantly enhanced ORFV recovery and addressed scalability challenges. Moreover, we demonstrated that the time of harvest and the use of a nuclease play a decisive role to increase ORFV yields. With these findings, we were able to establish an efficient and scalable clarification process of ORFV derived from a suspension production process, essential for advancing ORFV vaccine manufacturing.
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Affiliation(s)
- Felix Pagallies
- Department of Immunology, University of Tuebingen, Auf der Morgenstelle 15, 72076 Tübingen, Germany
| | - Jennifer J. Labisch
- Lab Essentials Applications Development, Sartorius, Otto-Brenner-Straße 20, 37079 Göttingen, Germany
| | - Malgorzata Wronska
- Department of Immunology, University of Tuebingen, Auf der Morgenstelle 15, 72076 Tübingen, Germany
- PRiME Vector Technologies, Herrenberger Straße 24, 72070 Tübingen, Germany
| | - Karl Pflanz
- Lab Essentials Applications Development, Sartorius, Otto-Brenner-Straße 20, 37079 Göttingen, Germany
| | - Ralf Amann
- Department of Immunology, University of Tuebingen, Auf der Morgenstelle 15, 72076 Tübingen, Germany
- PRiME Vector Technologies, Herrenberger Straße 24, 72070 Tübingen, Germany
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Smith JD, Sridharan SS, Contrera KJ, Richmon JD, Feng AL, Chinn SB, Heft-Neal ME, Spector ME. Use of the spider limb positioner for fibular free flap reconstruction of head and neck bony defects. Oral Oncol 2024; 152:106757. [PMID: 38520757 DOI: 10.1016/j.oraloncology.2024.106757] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 02/24/2024] [Accepted: 03/12/2024] [Indexed: 03/25/2024]
Abstract
BACKGROUND Osseous and osteocutaneous fibular free flaps are the workhorse of maxillomandibular reconstruction over 30 years after the initial description. Since 2019, we have routinely used the Spider Limb Positioner, adapted from its use in shoulder orthopedic procedures, for fibular free flap harvest. Herein, we describe this novel technique in our cohort. METHODS We describe our intraoperative setup and endorse the versatility and utility of this technique in comparison to other reported fibular free flap harvest techniques. RESULTS The Spider Limb Positioner was used 61 times in 60 different patients to harvest osseous or osteocutaneous fibular free flaps. Median (range) tourniquet time for flap harvest was 90 (40-124) minutes. No iatrogenic nerve compression injuries or complications related to lower extremity positioning occurred. CONCLUSION We describe a novel approach to fibular free flap harvest utilizing the Spider Limb Positioner, which affords optimal ergonomics, visibility, and patient repositioning. There were no nerve injuries or complications related to positioning in our series.
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Affiliation(s)
- Joshua D Smith
- Department of Otolaryngology - Head & Neck Surgery, University of Michigan, Ann Arbor, MI, USA
| | - Shaum S Sridharan
- Department of Otolaryngology - Head & Neck Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Kevin J Contrera
- Department of Otolaryngology - Head & Neck Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Jeremy D Richmon
- Department of Otolaryngology - Head & Neck Surgery, Massachusetts Eye and Ear, Harvard Medical School, Boston, Massachusetts, USA
| | - Allen L Feng
- Department of Otolaryngology - Head & Neck Surgery, Massachusetts Eye and Ear, Harvard Medical School, Boston, Massachusetts, USA
| | - Steven B Chinn
- Department of Otolaryngology - Head & Neck Surgery, University of Michigan, Ann Arbor, MI, USA
| | - Molly E Heft-Neal
- Department of Otolaryngology - Head & Neck Surgery, University of Michigan, Ann Arbor, MI, USA
| | - Matthew E Spector
- Department of Otolaryngology - Head & Neck Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA, USA.
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Arora M, Shukla T, Vala P. Managing severe bipolar bone loss in athletes: A comprehensive approach with open Latarjet and arthroscopic remplissage. J Orthop 2024; 51:91-97. [PMID: 38357440 PMCID: PMC10862392 DOI: 10.1016/j.jor.2024.01.012] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 01/20/2024] [Accepted: 01/22/2024] [Indexed: 02/16/2024] Open
Abstract
Background Severe bipolar bone loss (BBL) represents one of the toughest challenges when managing the instability of glenohumeral joints among athletes and more specifically the ones involved in overhead sports. It refers to the significant loss of the humeral head and the glenoid bone, with an increased risk of failure. The present study aimed to evaluate the functional outcomes of a combined open Latarjet and arthroscopic remplissage in such high-risk individuals. Methods A retrospective evaluation was carried out among athletes with antero-inferior loss of glenoid bone of more than 15 % and large off-track Hill-Sachs defect who underwent the Latarjet technique with iliac crest bone graft (ICBG) harvest used in combination with arthroscopic remplissage between 2021 and 2023. The University of California, Los Angeles (UCLA) score, constant-Murley score (CMS), and the range of motion (ROM; measured as forward flexion, external rotation, and abduction) were evaluated pre-operative and post-operative at the timepoint of 3-month, 6-month, and 1-year. Pre-operative magnetic resonance imaging scans (MRI) and computed tomography scans (CT) were obtained among the patients with severe glenohumeral BBL, and the glenoid track was calculated to identify on-track and off-track Hill-Sachs lesions. Post-operative MRI with filled Hill-Sachs defect post remplissage procedure and 3D CT scan was also done at 6-month to evaluate the union of the ICBG to the native glenoid bone. Results Overall, 11 patients underwent for the combined procedure for severe BBL. The UCLA score (31.18 ± 3.74), and the CMS (93.64 ± 8.38) at the time-point of 1-year post-operatively showed remarkable improvement in comparison with the preoperative scores (P < 0.0001); and the ROM including abduction, external rotation, and forward flexion were restored to near normality. All patients showed bony union at 6-month as confirmed by post-operative CT scan. No complications such as redislocation or subluxation were observed over 1-year. There were no neurological complications or complications related to graft (graft migration or graft breakage or resorption) as well. All the athletes returned to sports activities at an average duration of 6.8-month post-operatively, with 73 % returning to sports at the level of pre-injury. Conclusion The combined procedure of ICBG Latarjet and arthroscopic remplissage for the treatment of severe BBL in athletes achieved satisfactory outcomes over 1-year, with all athletes returning to sports activities.
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Affiliation(s)
- Manit Arora
- Department of Orthopaedic, Fortis Hospital, Mohali, 160062, India
| | - Tapish Shukla
- Department of Orthopaedic, Fortis Hospital, Mohali, 160062, India
| | - Pratik Vala
- Department of Orthopaedic, Fortis Hospital, Mohali, 160062, India
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Olewnik Ł, Zielinska N, Aragones P, Ruzik K, Paulsen F, Borowski A, LaPrade RF. The accessory heads of the quadriceps femoris muscle may affect the layering of the quadriceps tendon and potential graft harvest lengths. Knee Surg Sports Traumatol Arthrosc 2023; 31:5755-5764. [PMID: 37932536 PMCID: PMC10719154 DOI: 10.1007/s00167-023-07647-x] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Accepted: 10/24/2023] [Indexed: 11/08/2023]
Abstract
PURPOSE The aim of the study was to assess the quadriceps femoris system for the presence of additional layers. METHODS One hundred and twenty-eight lower limbs fixed in 10% formalin were examined. RESULTS Five types of quadriceps tendon layering were found based on the accessory heads of the quadriceps muscle. Type I (55%)-represented by four heads and four layers, and it was something new because standard orthopaedic textbooks described quadriceps tendon as a structure composed of only three layers. Type II (27.4%)-the first four layers were the same as in Type 1, but the accessory tendon of the fifth head of the quadriceps femoris muscle had the deepest attachments. Type III (10.9%)-this type included 6 heads of quadriceps femoris. It consisted of five layers. Type IV (3.1%)-this type included 7 quadriceps femoris heads. This type consisted of only four layers. Type V (3.1%)-this type included 8 heads of the quadriceps femoris heads. This type consist of 5 layers. CONCLUSION The findings of this study provide a detailed anatomy of the quadriceps tendon including the accessory tendons of the accessory heads of the quadriceps tendon. The accessory heads of the quadriceps femoris muscle contribute to the layering of the quadriceps tendon. The second conclusion of this study is the development of safe distances depending on the types. Not all types are perfect for harvesting-Type IV seems to be the safest type, in turn Type V the most dangerous.
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Affiliation(s)
- Łukasz Olewnik
- Department of Anatomical Dissection and Donation, Medical University of Lodz, Lodz, Poland.
| | - Nicol Zielinska
- Department of Anatomical Dissection and Donation, Medical University of Lodz, Lodz, Poland
| | - Paloma Aragones
- Department of Anatomy and Embryology, School of Medicine, Complutense University of Madrid, Madrid, Spain
| | - Kacper Ruzik
- Department of Anatomical Dissection and Donation, Medical University of Lodz, Lodz, Poland
| | - Friedrich Paulsen
- Institute of Functional and Clinical Anatomy, Friedrich Alexander University Erlangen-Nürnberg, Erlangen, Germany
| | - Andrzej Borowski
- Orthopaedics and Pediatric Orthopaedics Department, Medical University of Lodz, 90-419, Lodz, Poland
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Fourman MS, Vaynrub M. Identifying the ideal trajectory for prone trephine iliac crest bone graft harvesting. Spine J 2023; 23:1571-1573. [PMID: 37402430 PMCID: PMC10538411 DOI: 10.1016/j.spinee.2023.06.402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 05/29/2023] [Accepted: 06/29/2023] [Indexed: 07/06/2023]
Affiliation(s)
- Mitchell S Fourman
- Orthopaedic Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, 1275 York Ave, H-1011, New York, NY, 10065, USA
| | - Max Vaynrub
- Orthopaedic Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, 1275 York Ave, H-1011, New York, NY, 10065, USA.
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Bardsley CA, Chasteen K, Shapiro-Ilan D, Bock CH, Niemira BA, Kumar GD. Transfer of generic Escherichia coli and attenuated Salmonella enterica Typhimurium from the soil to the surface of in-shell pecans during harvest. Heliyon 2023; 9:e19676. [PMID: 37809630 PMCID: PMC10558922 DOI: 10.1016/j.heliyon.2023.e19676] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 08/18/2023] [Accepted: 08/30/2023] [Indexed: 10/10/2023] Open
Abstract
During harvest pecan nuts are at risk of contamination with foodborne pathogens from extended contact with the ground. The objective of this study was to determine the potential transfer of Escherichia coli and Salmonella from the ground to in-shell pecans during the harvesting process. Plots (2 m2) were sprayed with 1 L of a rifampicin (rif) resistant strain of either E. coli TVS 353 or an attenuated Salmonella Typhimurium inoculum at a low (∼4 log CFU/ml), mid (∼6 log CFU/ml) or high (∼8 log CFU/ml) concentrations. The following day, nuts were mechanically harvested and samples from each plot were collected at 1 min, 4 h, and 24 h. Samples were enumerated for Salmonella and E. coli on tryptic soy agar supplemented with rif. The Salmonella levels in the soil from the inoculated plots were 2.0 ± 0.3, 4.1 ± 0.1, and 6.4 ± 0.2 log CFU/g for the low, mid, and high inocula, respectively. The E. coli levels in the soil from the inoculated plots were 1.5 ± 0.4, 3.7 ± 0.3, and 5.8 ± 0.1 log CFU/g for the low, mid, and high inocula, respectively. There was a significant difference in the average daily rainfall among the three trials. Trial 3 received 23.8 ± 9.2 cm, while trials 1 and 2 received much less (0.1 ± 0.1 0.0 ± 0.0 cm, respectively). Inoculation concentration and trial were significant (P<0.05) factors that influenced the transfer of E. coli and Salmonella to pecans. For the high inoculum treatment, bacterial transfer to pecans ranged from 0.7 ± 0.3 to 4.1 ± 0.2 for E. coli and 1.3 ± 0.7 to 4.3 ± 0.4 log CFU/g for Salmonella. For the medium inoculum treatment, transfer ranged from <0.3 to 1.5 ± 0.1 for E. coli and <0.3 to 1.9 ± 0.2 log CFU/g for Salmonella. For the low treatment, transfer ranged from <0.3 to 0.4 ± 0.2 and <0.3 to 0.5 ± 0.1 log CFU/g for E. coli and Salmonella, respectively. These results show the need for implementing agricultural practices that prevent potential transfer of foodborne pathogens onto the surface of in-shell pecans during harvest.
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Affiliation(s)
- Cameron A. Bardsley
- USDA-ARS Southeastern Fruit and Tree Nut Research Station, 21 Dunbar Rd. Byron, GA. 31008, USA
| | - Kaicie Chasteen
- USDA-ARS Southeastern Fruit and Tree Nut Research Station, 21 Dunbar Rd. Byron, GA. 31008, USA
| | - David Shapiro-Ilan
- USDA-ARS Southeastern Fruit and Tree Nut Research Station, 21 Dunbar Rd. Byron, GA. 31008, USA
| | - Clive H. Bock
- USDA-ARS Southeastern Fruit and Tree Nut Research Station, 21 Dunbar Rd. Byron, GA. 31008, USA
| | - Brendan A. Niemira
- USDA-ARS Food Safety and Intervention Technologies Research Unit, Eastern Regional Research Center, 600 E. Mermaid Ln., Wyndmoor, Pa. 19038, USA
| | - Govindaraj Dev Kumar
- Center for Food Safety, College of Agriculture and Environmental Science, University of Georgia. 350 Woodroof Dr., Griffin, GA 30223, USA
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Oliveira MA, Braga-Pereira F, El Bizri HR, Morcatty TQ, Doria CRDC, Messias MR. Hunting practices in southwestern Amazonia: a comparative study of techniques, modalities, and baits among urban and rural hunters. J Ethnobiol Ethnomed 2023; 19:27. [PMID: 37400859 DOI: 10.1186/s13002-023-00599-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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Accepted: 06/16/2023] [Indexed: 07/05/2023]
Abstract
BACKGROUND Hunting is a vital means of obtaining animal in various human populations. Hunters rely on their knowledge of species ecology and behavior to develop and employ hunting techniques and increase their chances of success. The comparison of the hunting practices of different human societies can shed light on the sustainability of hunting and the impact it has on species' populations. In this study, we examine and compare the techniques, modalities, and baits used by urban and rural hunters in Rondônia, a state in southwestern Amazonia, Brazil. We expected that rural hunters would use these elements and have greater knowledge when compared to urban hunters. We also expect that the use of specific hunting techniques and modalities will have greater selectivity and specificity of capture for rural hunters and that this knowledge will differ between groups. METHODS We conducted 106 semi-structured interviews with rural and urban hunters from October 2018 to February 2020. We analyzed the data using PERMANOVA and Network analyses to compare and contrast the hunting practices of each group. RESULTS We recorded four main hunting techniques divided into ten modalities with three techniques and seven modalities being the preferred choices among hunters. Waiting for at a Fruit Tree was cited as the primary technique employed by hunters living in urban and rural areas indicated. While the techniques and modalities were similar among hunters, the composition of species targeted and baits used differed between groups. Our network approach showed that modularity in urban areas was numerically lower than in rural areas. All species had one to more techniques associated with their capture. CONCLUSIONS Hunters living in urban and rural environments showed high similarity in their practices, probably due to sharing similar environments to hunt containing similar species, as well as targeting preferably the same species.
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Affiliation(s)
- Marcela Alvares Oliveira
- Post-graduate Program in Biodiversity and Biotechnology of Legal Amazon (BIONORTE Network), Federal University of Rondônia, Porto Velho, Brazil.
- Post-graduate Program in Conservation and Use of Natural Resources, Federal University of Rondônia, Porto Velho, Brazil.
- Research Network on Diversity, Conservation and Use of Amazonian Fauna (RedeFauna), Manaus, Brazil.
- ComFauna, Comunidad de Manejo de Fauna Silvestre en la Amazonía y en Latinoamérica, Iquitos, Peru.
| | - Franciany Braga-Pereira
- Research Network on Diversity, Conservation and Use of Amazonian Fauna (RedeFauna), Manaus, Brazil
- Department of Ecology and Systematics, Federal University of Paraíba, João Pessoa, Brazil
| | - Hani Rocha El Bizri
- Research Network on Diversity, Conservation and Use of Amazonian Fauna (RedeFauna), Manaus, Brazil
- ComFauna, Comunidad de Manejo de Fauna Silvestre en la Amazonía y en Latinoamérica, Iquitos, Peru
- School of Science, Engineering and Environment, University of Salford, Salford, UK
- Terrestrial Vertebrate Ecology Research Group, Mamirauá Sustainable Development Institute, Estrada do Bexiga, Tefé, Brazil
| | - Thais Queiroz Morcatty
- Research Network on Diversity, Conservation and Use of Amazonian Fauna (RedeFauna), Manaus, Brazil
- Oxford Wildlife Trade Research Group, Faculty of Humanities and Social Sciences, Oxford Brookes University, Oxford, UK
| | - Carolina Rodrigues da Costa Doria
- Post-graduate Program in Biodiversity and Biotechnology of Legal Amazon (BIONORTE Network), Federal University of Rondônia, Porto Velho, Brazil
- Post-graduate Program in Conservation and Use of Natural Resources, Federal University of Rondônia, Porto Velho, Brazil
| | - Mariluce Rezende Messias
- Post-graduate Program in Biodiversity and Biotechnology of Legal Amazon (BIONORTE Network), Federal University of Rondônia, Porto Velho, Brazil
- Post-graduate Program in Conservation and Use of Natural Resources, Federal University of Rondônia, Porto Velho, Brazil
- Research Network on Diversity, Conservation and Use of Amazonian Fauna (RedeFauna), Manaus, Brazil
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Verstege JS, Johnson-Bice SM, Roth JD. Arctic and red fox population responses to climate and cryosphere changes at the Arctic's edge. Oecologia 2023; 202:589-599. [PMID: 37458813 DOI: 10.1007/s00442-023-05418-6] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Accepted: 07/01/2023] [Indexed: 07/30/2023]
Abstract
Responses of one species to climate change may influence the population dynamics of others, particularly in the Arctic where food webs are strongly linked. Specifically, changes to the cryosphere may limit prey availability for predators. We examined Arctic (Vulpes lagopus) and red fox (V. vulpes) population dynamics near the southern edge of the Arctic fox distribution using fur harvest records from Churchill, Manitoba, Canada between 1955 and 2012. Arctic foxes showed a declining population trend over time (inferred from harvest records corrected for trapping effort), whereas the red fox population trend was relatively stable. The positive relationship between the annual Arctic and red fox harvests suggested interspecific competition did not promote the Arctic fox decline. To investigate alternative mechanisms, we evaluated the relative influence of sea-ice phenology, snow depth, snow duration, winter thaws, and summer temperature on the harvest dynamics of both species in the most recent 32 years (1980-2012; n = 29) of our data. Arctic fox harvests were negatively related to the length of time Hudson Bay was free of sea ice. Shorter sea ice duration may reduce access to seal carrion as an alternative winter food source when lemming densities decline. Contrary to our prediction, red fox harvest was not related to summer temperature but was positively related to snow depth, suggesting winter prey availability may limit red fox population growth. Predators have an important ecological role, so understanding the influence of changes in the cryosphere on predator-prey interactions may better illuminate the broader influence of climate change on food-web dynamics.
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Affiliation(s)
- Jacqueline S Verstege
- Department of Biological Sciences, University of Manitoba, Winnipeg, MB, R3T 2N2, Canada
| | - Sean M Johnson-Bice
- Department of Biological Sciences, University of Manitoba, Winnipeg, MB, R3T 2N2, Canada
| | - James D Roth
- Department of Biological Sciences, University of Manitoba, Winnipeg, MB, R3T 2N2, Canada.
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Afsharnia F. Optimization of in vitro and in vivo antifungal effects of trehalose coating included Artemisia sieberi essential oil on mulberry ( Morus alba var. nigra) fruits using the hybrid RSM-GRA method. Food Sci Biotechnol 2023; 32:921-935. [PMID: 37123072 PMCID: PMC10130283 DOI: 10.1007/s10068-022-01236-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Revised: 11/24/2022] [Accepted: 12/21/2022] [Indexed: 01/30/2023] Open
Abstract
Mulberry is prone to microbial contamination due to mechanical damage during the harvesting. This study aimed to determine, and optimize fruit microbial loads, and in vitro and in vivo antifungal effects of trehalose coating including Artemisia sieberi essential oil on mulberry fruits using hybrid RSM-GRA. Among all treatments, dropping height of 1.2 m, storage regimes of 3 days, and concentration of 1%, resulted in a pH of 3.188, a moisture content of 89.193%, a dry matter content of 10.807%, a total soluble solids (TSS) of 8.537°brix, an radial growth of fungus (RGF) of 1.193 cm for purple mulberry fruit, and dropping height of 0.6 m, storage regimes of 2 days, and concentration of 1% for black mulberry fruit, leading to a pH of 3.182, a moisture content of 84.80%, a dry matter content of 15.230%, a TSS of 9.690°brix, an RGF of 1.460 cm were the best conditions for mulberry fruit.
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Affiliation(s)
- Fatemeh Afsharnia
- Department of Agricultural Machinery and Mechanization Engineering, Agricultural Sciences and Natural Resources University of Khuzestan, Ahvaz, Iran
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Dingle Robertson L, McNairn H, van der Kooij M, Jiao X, Ihuoma S, Joosse P. Monitoring autumn agriculture activities using Synthetic Aperture Radar (SAR) and coherence change detection. Heliyon 2023; 9:e17322. [PMID: 37441383 PMCID: PMC10333464 DOI: 10.1016/j.heliyon.2023.e17322] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 06/13/2023] [Accepted: 06/13/2023] [Indexed: 07/15/2023] Open
Abstract
Across Canada, farmers are encouraged to adopt beneficial management practices (BMPs) to protect soil heath, reduce green house gas emissions and mitigate off-site impacts from agriculture. Measuring the uptake of BMPs, including the implementation of conservation tillage, helps gauge the success of policies and programs to promote adoption. Satellites are one way to monitor BMP adoption and Synthetic Aperture Radars (SARs) are of particular interest given their all-weather data collection capability. This research investigated coherent change detection (CCD) to determine when farmers harvest and till their fields. A time series of both Sentinel-1 and RADARSAT Constellation Mission (RCM) images was acquired over a site in the Canadian Lake Erie basin, during the autumn of 2021, when farmers were harvesting and tilling fields of corn, soybeans and wheat. 16 CCD pairs were created and coherence values were interpreted based on observations collected for 101 fields. An m-chi decomposition was applied to the RCM data, and the Volume/Surface (V/S) ratio was calculated as an additional source of information to interpret results. Change events due to harvest, tillage, autumn seeding and chemical termination resulted in coherence values below 0.20. The mean and standard deviation for fields with observed change was 0.18 ± 0.03. Coherence values were 0.42 ± 0.15 for fields where no change was noted. Tests confirmed that the coherence associated with changed and unchanged fields was significantly different. Coherence values could also differentiate between some types of management events, including tillage and harvest. CCD could also separate harvest as a function of crop type (corn or soybeans). V/S ratios declined after tillage events but increased after both harvesting and chemical termination. Narrowing the date of harvest and tillage is as important as detecting change. To meet this requirement, Sentinel-1 and RCM CCD products with values below 0.20 (indicating change had occurred), were graphically overlaid. With this approach, the timing of corn harvest was identified as occurring within a 5-day window. The tilling of corn, soybeans and wheat was narrowed to a 4-day window. The results of this research confirmed that CCD can be used to capture change due to autumn agricultural activities, and this technique can also separate change due to harvest and tillage. Finally, this study demonstrated that when data from different SAR missions are combined in a virtual constellation, timing of harvest and tillage can be more precisely defined.
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Affiliation(s)
| | - Heather McNairn
- Agriculture and Agri-food Canada, Agri-Environment Division, Ottawa, Ontario, Canada
| | | | - Xianfeng Jiao
- Agriculture and Agri-food Canada, Agri-Environment Division, Ottawa, Ontario, Canada
| | - Samuel Ihuoma
- Agriculture and Agri-food Canada, Agri-Environment Division, Ottawa, Ontario, Canada
| | - Pamela Joosse
- Agriculture and Agri-food Canada, Harrow Research & Development Centre, Harrow, Ontario, Canada
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Zhou J, Jia Y, Liu H. Coagulation/flocculation-flotation harvest of Microcystis aeruginosa by cationic hydroxyethyl cellulose and Agrobacterium mucopolysaccharides. Chemosphere 2023; 313:137503. [PMID: 36493887 DOI: 10.1016/j.chemosphere.2022.137503] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 10/16/2022] [Accepted: 12/06/2022] [Indexed: 06/17/2023]
Abstract
Efficient biocoagulants/bioflocculants are desired for removal of Microcystis aeruginosa, the dominant harmful bloom-forming cyanobacterium. Herein, we reported cationic hydroxyethyl cellulose (CHEC) inactivated M. aeruginosa cells after forming coagulates and floating-flocculated them with aid of Agrobacterium mucopolysaccharides (AMP) and surfactant. CHEC exhibited cyanocidal activity at 20 mg/L, coagulating 85% of M. aeruginosa biomass within 9 h and decreasing 41% of chlorophyll a after 72 h. AMP acted as an adhesive flocculation aid that accelerated and strengthened the formation of flocs, approaching a maximum in 10 min. Flocs of M. aeruginosa were floated after foaming with cocoamidopropyl betaine (CAB), which facilitated the subsequent filter harvest. 82% of M. aeruginosa biomass was suspended on water surface after treated with the coagulation/flocculation-flotation (CFF) agents containing CHEC (25 mg/L), AMP (177 mg/L) and CAB (0.1 mg/L). All components in CFF agents at the applied concentrations did not inhibit acetylcholinesterase or Vibrio fischeri. Our findings provide new insights in developing bio-based materials for sustainable control of cyanobacterial blooms.
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Affiliation(s)
- Jinxia Zhou
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong, 610640, China.
| | - Yunlu Jia
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Hao Liu
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong, 610640, China.
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Ibenana L, Anderson R, Gee A, Gilbert M, Cox C, Hare JM, Brooks A, Kelley L, Khan A, Lapteva N, Orozco A, Styers D, Sumstad D, Ugochi I, McKenna DH. Assessment of the LOVO device for final harvest of novel cell therapies: a Production Assistance for Cellular Therapies multi-center study. Cytotherapy 2022; 24:691-698. [PMID: 35279374 PMCID: PMC9232931 DOI: 10.1016/j.jcyt.2022.01.010] [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: 10/24/2021] [Revised: 01/10/2022] [Accepted: 01/30/2022] [Indexed: 11/03/2022]
Abstract
BACKGROUND AIMS The final harvest or wash of a cell therapy product is an important step in manufacturing, as viable cell recovery is critical to the overall success of a cell therapy. Most harvest/wash approaches in the clinical lab involve centrifugation, which can lead to loss of cells and decreased viability of the final product. Here the authors report on a multi-center assessment of the LOVO Cell Processing System (Fresenius Kabi, Bad Homburg, Germany), a cell processing device that uses a spinning filtration membrane instead of centrifugation. METHODS Four National Institutes of Health Production Assistance for Cellular Therapies cell processing facilities (CPFs) assessed the LOVO Cell Processing System for final harvest and/or wash of the following three different cell products: activated T cells (ATCs), tumor-infiltrating lymphocytes (TILs) and bone marrow-derived mesenchymal stromal cells (MSCs). Each site compared their current in-house, routinely used method of final cell harvest and/or wash with that of the LOVO device. RESULTS Final harvest and/or wash of ATCs, TILs and MSCs using the LOVO system resulted in satisfactory cell viability and recovery with some substantial improvement over the in-house methods of CPFs. Processing time was variable among cell types/facilities. CONCLUSIONS The LOVO Cell Processing System provides an alternative to centrifuge-based technologies. The system employs a spinning membrane filter, exposing cells to minimal g-forces compared with centrifugation, and is automated and closed. This small multi-center study demonstrated the ability of the LOVO device to yield satisfactory cell viability and recovery of T cells and MSCs.
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Affiliation(s)
| | | | - Adrian Gee
- Center for Cell and Gene Therapy, Baylor College of Medicine, Houston, Texas, USA
| | - Margaret Gilbert
- Center for Cell and Gene Therapy, Baylor College of Medicine, Houston, Texas, USA
| | - Cheryl Cox
- Moffitt Cancer Center, Tampa, Florida, USA
| | - Joshua M Hare
- Interdisciplinary Stem Cell Institute, Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Adriana Brooks
- Interdisciplinary Stem Cell Institute, Miller School of Medicine, University of Miami, Miami, Florida, USA
| | | | - Aisha Khan
- Interdisciplinary Stem Cell Institute, Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Natalia Lapteva
- Center for Cell and Gene Therapy, Baylor College of Medicine, Houston, Texas, USA
| | - Aaron Orozco
- Center for Cell and Gene Therapy, Baylor College of Medicine, Houston, Texas, USA
| | - David Styers
- The Emmes Company, LLC, Rockville, Maryland, USA
| | - Darin Sumstad
- Molecular and Cellular Therapeutics, University of Minnesota, Saint Paul, Minnesota, USA
| | - Ibekwe Ugochi
- Center for Cell and Gene Therapy, Baylor College of Medicine, Houston, Texas, USA
| | - David H McKenna
- Molecular and Cellular Therapeutics, University of Minnesota, Saint Paul, Minnesota, USA.
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Dalberto D, Alves J, Garcia ALH, de Souza MR, Abella AP, Thiesen FV, Salvador M, Santos Branco CD, Marroni N, Bona S, Schemitt E, Da Silva FR, Da Silva J. Exposure in the tobacco fields: Genetic damage and oxidative stress in tobacco farmers occupationally exposed during harvest and grading seasons. Mutat Res Genet Toxicol Environ Mutagen 2022; 878:503485. [PMID: 35649679 DOI: 10.1016/j.mrgentox.2022.503485] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 04/11/2022] [Accepted: 04/14/2022] [Indexed: 06/15/2023]
Abstract
Agricultural workers engaged in tobacco cultivation are constantly exposed to large amounts of harmful agents, such as pesticides and nicotine. Furthermore, most of the flue-cured tobacco leaves are manually graded exposing workers to agents such as tobacco-specific nitrosamines. This study aimed to evaluate genetic damage and oxidative stress in tobacco farmers occupationally exposed during the harvest and grading seasons. We obtained data on DNA damage detected in Comet assay in blood cells and micronucleus experiment with buccal cells from 241 individuals. The serum cotinine levels and nitrates were also evaluated. The Comet Assay results showed a showed an increased visual score for males and females during harvest time and tobacco grading. An increase of micronucleated and binucleated cells was observed in the grading group compared to the control and harvest groups. The oxidative stress measurements showed a clear increase of thiobarbituric acid reactive substances (TBARS) in tobacco farmers during harvest time, and trolox equivalent antioxidant capacity (TEAC) in individuals during harvest and grading time compared to the controls. Significant increases of the cotinine levels were observed during the harvest and grading period (harvest>grading), and nitrates for the grading period compared to the control. In this study, tobacco farmers presented compromised DNA integrity associated with enhanced oxidative stress levels.
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Affiliation(s)
- Daiana Dalberto
- Laboratory of Genetic Toxicology, PPGBioSaúde, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil
| | - Jodel Alves
- Laboratory of Genetic Toxicology, PPGBioSaúde, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil
| | - Ana Letícia Hilário Garcia
- Laboratory of Genetic Toxicology, PPGBioSaúde, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil; Laboratory of Genetic Toxicology, PPGSDH, La Salle University (UniLaSalle), Canoas, RS, Brazil
| | - Melissa Rosa de Souza
- Laboratory of Genetic Toxicology, PPGBioSaúde, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil
| | - Angélica Pich Abella
- Laboratory of Genetic Toxicology, PPGBioSaúde, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil
| | - Flávia V Thiesen
- Toxicology Institute, Catholic Pontificial University of Rio Grande do Sul (PUCRS), Porto Alegre, RS, Brazil
| | - Mirian Salvador
- Biotechnology Institute, University of Caxias do Sul, Caxias do Sul (UCS), RS, Brazil
| | | | - Norma Marroni
- PPG Biological Sciences - Physiology and PPG Medicine - Medical Sciences at UFRGS, Porto Alegre, RS, Brazil; Laboratory of Pneumological Sciences and Inflammation - Hospital de Clínicas de Porto Alegre, RS, Brazil
| | - Silvia Bona
- PPG Biological Sciences - Physiology and PPG Medicine - Medical Sciences at UFRGS, Porto Alegre, RS, Brazil
| | - Elizangela Schemitt
- PPG Biological Sciences - Physiology and PPG Medicine - Medical Sciences at UFRGS, Porto Alegre, RS, Brazil
| | | | - Juliana Da Silva
- Laboratory of Genetic Toxicology, PPGBioSaúde, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil; Laboratory of Genetic Toxicology, PPGSDH, La Salle University (UniLaSalle), Canoas, RS, Brazil.
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Ceccherelli G, Addis P, Atzori F, Cadoni N, Casu M, Coppa S, De Luca M, de Lucia GA, Farina S, Fois N, Frau F, Gazale V, Grech D, Guala I, Mariani M, Marras MSG, Navone A, Pansini A, Panzalis P, Pinna F, Ruiu A, Scarpa F, Piazzi L. Sea urchin harvest inside marine protected areas: an opportunity to investigate the effects of exploitation where trophic upgrading is achieved. PeerJ 2022; 10:e12971. [PMID: 35282273 PMCID: PMC8908888 DOI: 10.7717/peerj.12971] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 07/15/2021] [Accepted: 01/30/2022] [Indexed: 01/11/2023] Open
Abstract
Background Marine protected areas (MPAs) usually have both positive effects of protection for the fisheries' target species and indirect negative effects for sea urchins. Moreover, often in MPAs sea urchin human harvest is restricted, but allowed. This study is aimed at estimating the effect of human harvest of the sea urchin Paracentrotus lividus within MPAs, where fish exploitation is restricted and its density is already controlled by a higher natural predation risk. The prediction we formulated was that the lowest densities of commercial sea urchins would be found where human harvest is allowed and where the harvest is restricted, compared to where the harvest is forbidden. Methods At this aim, a collaborative database gained across five MPAs in Sardinia (Western Mediterranean, Italy) and areas outside was gathered collecting sea urchin abundance and size data in a total of 106 sites at different degrees of sea urchin exploitation: no, restricted and unrestricted harvest sites (NH, RH and UH, respectively). Furthermore, as estimates made in past monitoring efforts (since 2005) were available for 75 of the sampled sites, for each of the different levels of exploitation, the rate of variation in the total sea urchin density was also estimated. Results Results have highlighted that the lowest sea urchin total and commercial density was found in RH sites, likely for the cumulative effects of human harvest and natural predation. The overall rate of change in sea urchin density over time indicates that only NH conditions promoted the increase of sea urchin abundance and that current local management of the MPAs has driven towards an important regression of populations, by allowing the harvest. Overall, results suggest that complex mechanisms, including synergistic effects between natural biotic interactions and human pressures, may occur on sea urchin populations and the assessment of MPA effects on P. lividus populations would be crucial to guide management decisions on regulating harvest permits. Overall, the need to ban sea urchin harvest in the MPAs to avoid extreme reductions is encouraged, as inside the MPAs sea urchin populations are likely under natural predation pressures for the trophic upgrading.
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Affiliation(s)
- Giulia Ceccherelli
- Dipartimento di Chimica e Farmacia, Universitá di Sassari, Via Piandanna, Sassari, Italy
| | - Piero Addis
- Dipartimento di Scienze della Vita e dell’Ambiente, Universitá di Cagliari, Via Fiorelli, Cagliari, Italy
| | - Fabrizio Atzori
- Capo Carbonara –Villasimius Marine Protected Area, Via Roma, Villasimius (CA), Italy
| | - Nicoletta Cadoni
- Capo Carbonara –Villasimius Marine Protected Area, Via Roma, Villasimius (CA), Italy
| | - Marco Casu
- Dipartimento di Medicina Veterinaria –Sez. Fisiologia della Nutrizione e Zoologia, Universitá di Sassari, Sassari, Italy
| | - Stefania Coppa
- Istituto per lo studio degli Impatti Antropici e Sostenibilità in ambiente marino (IAS) –Consiglio Nazionale delle Ricerche (CNR), Loc. Sa Mardini, Torre Grande (OR), Italy
| | - Mario De Luca
- Dipartimento di Chimica e Farmacia, Universitá di Sassari, Via Piandanna, Sassari, Italy
| | - Giuseppe Andrea de Lucia
- Istituto per lo studio degli Impatti Antropici e Sostenibilità in ambiente marino (IAS) –Consiglio Nazionale delle Ricerche (CNR), Loc. Sa Mardini, Torre Grande (OR), Italy
| | - Simone Farina
- IMC –International Marine Centre, Loc. Sa Mardini, Torre Grande, OR, Italy,SZN –Stazione Zoologica Anton Dohrn, Villa Comunale Napoli, Italy
| | - Nicola Fois
- Agris –Agricultural Research Agency of Sardinia –Bonassai SS, Sassari, Italy
| | - Francesca Frau
- Capo Carbonara –Villasimius Marine Protected Area, Via Roma, Villasimius (CA), Italy
| | - Vittorio Gazale
- Isola dell’Asinara Marine Protected Area, via Ponte Romano, Porto Torres (SS), Italy
| | - Daniele Grech
- IMC –International Marine Centre, Loc. Sa Mardini, Torre Grande, OR, Italy
| | - Ivan Guala
- IMC –International Marine Centre, Loc. Sa Mardini, Torre Grande, OR, Italy
| | - Mariano Mariani
- Capo Caccia –Isola Piana Marine Protected Area, Loc. Tramariglio SP, Alghero, SS, Italy
| | - Massimo SG Marras
- Penisola del Sinis –Isola di Mal di Ventre Marine Protected Area, Corso Italia, Cabras, OR, Italy
| | - Augusto Navone
- Tavolara Punta Coda Cavallo Marine Protected Area, Via S. Giovanni, Olbia (SS), Italy
| | - Arianna Pansini
- Dipartimento di Chimica e Farmacia, Universitá di Sassari, Via Piandanna, Sassari, Italy
| | - Pieraugusto Panzalis
- Tavolara Punta Coda Cavallo Marine Protected Area, Via S. Giovanni, Olbia (SS), Italy
| | - Federico Pinna
- Dipartimento di Chimica e Farmacia, Universitá di Sassari, Via Piandanna, Sassari, Italy
| | - Alberto Ruiu
- Capo Caccia –Isola Piana Marine Protected Area, Loc. Tramariglio SP, Alghero, SS, Italy
| | - Fabio Scarpa
- Dipartimento di Medicina Veterinaria –Sez. Fisiologia della Nutrizione e Zoologia, Universitá di Sassari, Sassari, Italy
| | - Luigi Piazzi
- Dipartimento di Chimica e Farmacia, Universitá di Sassari, Via Piandanna, Sassari, Italy
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Garcia Chance LM, Hall CR, White SA. Viability assessment for the use of floating treatment wetlands as alternative production and remediation systems for nursery and greenhouse operations. J Environ Manage 2022; 305:114398. [PMID: 34991030 DOI: 10.1016/j.jenvman.2021.114398] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 11/30/2021] [Accepted: 12/26/2021] [Indexed: 06/14/2023]
Abstract
Floating treatment wetlands (FTWs) are deployed in nursery and greenhouse water retention reservoirs to help manage and mitigate nutrient contaminants within irrigation return flow. One management issue for FTWs is the need for plant harvest to avoid releasing nutrients back into the water column when plant tissues begin to senesce. Some researchers recommend harvesting the entire plant to prevent nutrient release. Resale of plants harvested from FTWs is one possible use of this live biomass by the nursery and greenhouse industry. To determine if nursery and greenhouse operations could use FTWs to clean water and simultaneously produce saleable plants, the objectives of this study were to (1) quantify the survival and aesthetics of plants after transplant from a FTW and (2) compare the time to market between traditional (containerized) and FTW production systems. Overall, plants harvested from FTWs were resalable. Plants transplanted from FTWs had higher survival and aesthetic ratings (scale of 1-5, 5 = highest quality) when transplanted to containers (4.26) compared to directly into the ground (2.81). The growth of Panicum virgatum and Canna × generalis 'Firebird' in FTW systems was two weeks slower than that of plants grown in traditional production areas. Sustainability of FTW systems combined with the capacity to produce salable plants that will return a profit improves adoption feasibility for production horticulture.
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Affiliation(s)
- Lauren M Garcia Chance
- Water Treatment Technology Laboratory, South Carolina Water Resources Center, Clemson University, 509 Westinghouse Rd, Pendleton, SC, 29670, United States
| | - Charles R Hall
- Department of Horticultural Sciences, Texas A&M University, College Station, TX, 77843-2133, TX, United States
| | - Sarah A White
- Department of Plant and Environmental Sciences, Clemson University, E-143 Poole Agricultural Center, Clemson, SC, 29634-0310, United States.
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Sriamornrattanakul K, Akharathammachote N. The Intersection Between the Sternocleidomastoid and Splenius Capitis as the Anatomical Landmark to Facilitate Occipital Artery Harvest: A Retrospective Clinical Study. World Neurosurg 2021; 157:e364-e373. [PMID: 34673238 DOI: 10.1016/j.wneu.2021.10.096] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 09/01/2021] [Accepted: 10/09/2021] [Indexed: 11/26/2022]
Abstract
BACKGROUND Occipital artery (OA)-posterior inferior cerebellar artery (PICA) bypass is a challenging procedure and is not frequently performed owing to the difficulty of OA harvest. To facilitate harvest, the intersection between the sternocleidomastoid and splenius capitis (the OA triangle) is used as the anatomical landmark to identify the OA segment that carries the highest risk of damage. This clinical study aimed to demonstrate efficacy and safety of OA harvest using this landmark. METHODS The study included 18 patients who underwent OA harvest using the OA triangle as a landmark for treatment of vertebral artery and PICA aneurysms. Patients were retrospectively evaluated for safety and patency of OA after harvest and OA-PICA bypass. RESULTS Of 18 patients with ruptured and unruptured vertebral artery and PICA aneurysms, 13 (72.2%) underwent OA-PICA bypass and 5 (27.8%) did not undergo bypass. The OA was completely harvested without damage in all patients. After harvest, the OA was patent in 17 patients (94.4%) and was occluded in 1 patient owing to vasospasm; this patient then underwent recanalization resulting in good patency of the OA-PICA bypass. The patency rate of the OA-PICA bypass was 100%. CONCLUSIONS The OA triangle, which is the anatomical landmark of the proximal end of the transitional segment of the OA, facilitated OA harvest using the distal-to-proximal harvest technique with safety and good patency. To the best of our knowledge, this is the first study of OA harvest in clinical cases.
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Affiliation(s)
- Kitiporn Sriamornrattanakul
- Division of Neurosurgery, Department of Surgery, Faculty of Medicine Vajira Hospital, Navamindradhiraj University, Bangkok, Thailand.
| | - Nasaeng Akharathammachote
- Division of Neurosurgery, Department of Surgery, Faculty of Medicine Vajira Hospital, Navamindradhiraj University, Bangkok, Thailand
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17
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Delibes-Mateos M, Moreno-Zarate L, Peach W, Arroyo B. Estate-level decision-making and socioeconomics determine annual harvest in the European Turtle-dove in central Spain. Sci Total Environ 2021; 791:148168. [PMID: 34126478 DOI: 10.1016/j.scitotenv.2021.148168] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 05/26/2021] [Accepted: 05/26/2021] [Indexed: 06/12/2023]
Abstract
Designing evidence-based policies that regulate harvest levels is essential to avoid unsustainable hunting. This requires a good understanding of the relationship between bag sizes and regulatory mechanisms of harvest, and particularly of how these mechanisms are implemented locally and how they vary between game estates. The European Turtle-dove (Streptopelia turtur) has decreased by 30-49% since the late 1990s. The three main identified threats for the species are habitat loss, illegal killing and unsustainable legal hunting. We assessed how turtle dove estate-level harvest varies in relation to hunter density, number of hunting days, the adopted hunting method, game management intensity and the economic investment of the estate. Additionally, we assessed whether estate-level harvest had declined concomitantly with the population decline, and whether trends had been similar in relation to hunting method. We analysed Hunting Management Plans and Annual Hunting Reports of several thousand estates in central Spain, one of the main breeding and hunting areas of the species. Annual estate harvest was positively associated with hunter density, and was higher on estates that offered fixed-position hunting compared to those that only provided walked-up shooting. Importantly, these decisions are made by managers at the estate level and are not directly regulated by policy. We also found that more turtle doves are harvested on estates that invest more money in management, suggesting that the socioeconomic characteristics of the estate also influence local decisions on harvest intensity. Average annual estate-level harvest declined by 27% between 2007 and 2018, accompanied by a switch from fixed-position to walked-up hunting practices. Our study indicates that reducing hunting density or the number of fixed-position hunting days may be the most efficient ways to reduce turtle dove harvest, and that factors influencing estate-level decision-making have to be understood if reduction of hunting pressure in declining species is sought.
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Affiliation(s)
- Miguel Delibes-Mateos
- Instituto de Estudios Sociales Avanzados (IESA-CSIC), Campo Santo de los Mártires 7, 14004 Córdoba, Spain.
| | - Lara Moreno-Zarate
- Instituto de Investigación en Recursos Cinegéticos (IREC, CSIC-UCLM-JCCM), Ronda de Toledo 12, 13071 Ciudad Real, Spain.
| | - Will Peach
- RSPB Centre for Conservation Science, RSPB, The Lodge, Sandy, Beds SG19 2DL, UK.
| | - Beatriz Arroyo
- Instituto de Investigación en Recursos Cinegéticos (IREC, CSIC-UCLM-JCCM), Ronda de Toledo 12, 13071 Ciudad Real, Spain.
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18
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Johnson OF, Panda A, Lishawa SC, Lawrence BA. Repeated large-scale mechanical treatment of invasive Typha under increasing water levels promotes floating mat formation and wetland methane emissions. Sci Total Environ 2021; 790:147920. [PMID: 34380259 DOI: 10.1016/j.scitotenv.2021.147920] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 05/12/2021] [Accepted: 05/15/2021] [Indexed: 06/13/2023]
Abstract
Invasive species management typically aims to promote diversity and wildlife habitat, but little is known about how management techniques affect wetland carbon (C) dynamics. Since wetland C uptake is largely influenced by water levels and highly productive plants, the interplay of hydrologic extremes and invasive species is fundamental to understanding and managing these ecosystems. During a period of rapid water level rise in the Laurentian Great Lakes, we tested how mechanical treatment of invasive plant Typha × glauca shifts plant-mediated wetland C metrics. From 2015 to 2017, we implemented large-scale treatment plots (0.36-ha) of harvest (i.e., cut above water surface, removed biomass twice a season), crush (i.e., ran over biomass once mid-season with a tracked vehicle), and Typha-dominated controls. Treated Typha regrew with approximately half as much biomass as unmanipulated controls each year, and Typha production in control stands increased from 500 to 1500 g-dry mass m-2 yr-1 with rising water levels (~10 to 75 cm) across five years. Harvested stands had total in-situ methane (CH4) flux rates twice as high as in controls, and this increase was likely via transport through cut stems because crushing did not change total CH4 flux. In 2018, one year after final treatment implementation, crushed stands had greater surface water diffusive CH4 flux rates than controls (measured using dissolved gas in water), likely due to anaerobic decomposition of flattened biomass. Legacy effects of treatments were evident in 2019; floating Typha mats were present only in harvested and crushed stands, with higher frequency in deeper water and a positive correlation with surface water diffusive CH4 flux. Our study demonstrates that two mechanical treatments have differential effects on Typha structure and consequent wetland CH4 emissions, suggesting that C-based responses and multi-year monitoring in variable water conditions are necessary to accurately assess how management impacts ecological function.
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Affiliation(s)
- Olivia F Johnson
- U.S. Geological Survey, Northern Prairie Wildlife Research Center, 8711 37th St SE, Jamestown, ND 58401, USA; Department of Natural Resources and the Environment, Center for Environmental Science and Engineering, University of Connecticut, 1376 Storrs Road Unit 4087, Storrs, CT 06269, USA.
| | - Abha Panda
- School for Environment and Sustainability, University of Michigan, 440 Church Street, Ann Arbor, MI 48109, USA
| | - Shane C Lishawa
- School of Environmental Sustainability, Loyola University Chicago, 6349 N Kenmore Ave, Chicago, IL 60660, USA
| | - Beth A Lawrence
- Department of Natural Resources and the Environment, Center for Environmental Science and Engineering, University of Connecticut, 1376 Storrs Road Unit 4087, Storrs, CT 06269, USA
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Leng L, Li W, Chen J, Leng S, Chen J, Wei L, Peng H, Li J, Zhou W, Huang H. Co-culture of fungi-microalgae consortium for wastewater treatment: A review. Bioresour Technol 2021; 330:125008. [PMID: 33773267 DOI: 10.1016/j.biortech.2021.125008] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 03/11/2021] [Accepted: 03/12/2021] [Indexed: 06/12/2023]
Abstract
The treatment of wastewater by microalgae has been studied and proved to be effective through previous studies. Due to the small size of microalgae, how to efficiently harvest microalgae from wastewater is a crucial factor restricting the development of algal technologies. Fungi-assisted microalgae bio-flocculation for microalgae harvesting and wastewater treatment simultaneously, which was overlooked previously, has attracted increasing attention in the recent decade due to its low cost and high efficiency. This review found that fungal hyphae and microalgae can stick together due to electrostatic neutralization, surface protein interaction, and exopolysaccharide adhesion in the co-culture process, realizing co-pelletization of microalgae and fungi, which is conducive to microalgae harvesting. Besides, the combination of fungi and microalgae has a complementary effect on pollutant removal from wastewaters. The co-culture of fungi-microalgae has excellent development prospects with both environmental and economic benefits, and it is expected to be applied on an industrial scale.
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Affiliation(s)
- Lijian Leng
- School of Energy Science and Engineering, Central South University, Changsha 410083, China
| | - Wenting Li
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, and School of Resources, Environmental & Chemical Engineering, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Jie Chen
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, and School of Resources, Environmental & Chemical Engineering, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Songqi Leng
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, and School of Resources, Environmental & Chemical Engineering, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Jiefeng Chen
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, and School of Resources, Environmental & Chemical Engineering, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Liang Wei
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, and School of Resources, Environmental & Chemical Engineering, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Haoyi Peng
- School of Energy Science and Engineering, Central South University, Changsha 410083, China
| | - Jun Li
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, and School of Resources, Environmental & Chemical Engineering, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Wenguang Zhou
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, and School of Resources, Environmental & Chemical Engineering, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Huajun Huang
- School of Land Resources and Environment, Jiangxi Agricultural University, Nanchang 330045, China.
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20
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de Campos Azevedo CI, Leiria Pires Gago Ângelo AC, Quental C, Gonçalves S, Folgado J, Ferreira N, Sevivas N. Proximal and mid-thigh fascia lata graft constructs used for arthroscopic superior capsule reconstruction show equivalent biomechanical properties: an in vitro human cadaver study. JSES Int 2021; 5:439-446. [PMID: 34136851 PMCID: PMC8178621 DOI: 10.1016/j.jseint.2021.01.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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] [Indexed: 01/14/2023] Open
Abstract
Background The proximal fascia lata (FL) graft construct used for arthroscopic superior capsule reconstruction (ASCR) is openly harvested, whereas the mid-thigh FL graft construct is minimally invasively harvested. The purpose of the current study was to compare the biomechanical properties of proximal thigh and mid-thigh-harvested FL graft constructs used for ASCR. The hypothesis was that, despite the different morphological characteristics of the proximal thigh and mid-thigh FL graft constructs used for ASCR, their biomechanical properties would not significantly differ. This information may assist orthopedic surgeons in the choice of the harvest location, technique, and type of graft construct for ASCR. Methods Forty FL specimens, 20 proximal thigh and 20 mid-thigh, were harvested from the lateral thighs of 10 fresh human cadavers (6 male, 4 female; average age, 58.60 ± 17.20 years). The thickness of each 2-layered proximal thigh and 6-layered mid-thigh FL graft construct was measured. Each construct was mechanically tested in the longitudinal direction, and the stiffness and Young’s modulus were computed. Data were compared by Welch’s independent t-test and analysis of variance, and statistical significance was set at P < .05. Results The average thickness of the proximal thigh FL graft construct (7.17 ± 1.97 mm) was significantly higher than that of the mid-thigh (5.54 ± 1.37 mm) [F (1,32) = 7.333, P = .011]. The average Young’s modulus of the proximal thigh and mid-thigh graft constructs was 32.85 ± 19.54 MPa (range, 7.94 – 75.14 MPa; 95% confidence interval [CI], 23.71 – 42.99) and 44.02 ± 31.29 MPa (range, 12.53 –120.33 MPa; 95% CI, 29.38 – 58.66), respectively. The average stiffness of the proximal thigh and mid-thigh graft constructs was 488.96 ± 267.80 N/mm (range, 152.96 – 1086.49 N/mm; 95% CI, 363.63 – 614.30) and 562.39 ± 294.76 N/mm (range, 77.46 – 1229.68 N/mm; 95% CI, 424.44 – 700.34), respectively. There was no significant difference in the average Young’s modulus or stiffness between the proximal thigh and mid-thigh graft constructs (P = .185 and P = .415, respectively). Conclusion Despite the different morphological characteristics of the proximal thigh and mid-thigh FL graft constructs used for ASCR, their Young’s modulus and stiffness did not significantly differ.
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Affiliation(s)
- Clara Isabel de Campos Azevedo
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus de Gualtar, Braga, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal.,Centro Hospitalar de Lisboa Ocidental, Lisbon, Portugal.,Hospital dos SAMS de Lisboa, Lisbon, Portugal
| | | | - Carlos Quental
- IDMEC - Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
| | - Sérgio Gonçalves
- IDMEC - Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
| | - João Folgado
- IDMEC - Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
| | - Nuno Ferreira
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus de Gualtar, Braga, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal.,Grupo Trofa Saúde, Portugal.,Hospital de Santa Maria Maior, Barcelos, Portugal
| | - Nuno Sevivas
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus de Gualtar, Braga, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal.,Grupo Trofa Saúde, Portugal.,Clínica do Dragão, Espregueira-Mendes Sports Centre - FIFA Medical Centre of Excellence, Porto, Portugal
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21
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Tan CH, Nomanbhay S, Shamsuddin AH, Show PL. Recent Progress in Harvest and Recovery Techniques of Mammalian and Algae Cells for Industries. Indian J Microbiol 2021; 61:279-282. [PMID: 34294993 DOI: 10.1007/s12088-021-00930-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 12/17/2020] [Accepted: 03/08/2021] [Indexed: 10/21/2022] Open
Abstract
In our modern world, biotechnology products play important roles not only in our health and culture, but also various industries such as food, agriculture, sewage treatment, biofuels, nutraceuticals, and pharmaceuticals. Rapid technological advances in biotechnology over the last few decades have allowed industrial integration of mammalian cells (like the Chinese hamster ovary cells) and algae cells in pharmaceutical and biofuel industries to produce commercial products and valuable biomolecules. However, the cost of cell harvest and recovery can become expensive depending on the harvesting technique, degree of purification, and intended use of the end-products. This has led to numerous research in exploring and developing efficient harvesting techniques. Therefore, in this review, the popular harvesting techniques and their recent applications will be discussed.
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Affiliation(s)
- Chung Hong Tan
- Institute of Sustainable Energy (ISE), Universiti Tenaga Nasional, Jalan Ikram-UNITEN, 43000 Kajang, Selangor Malaysia
| | - Saifuddin Nomanbhay
- Institute of Sustainable Energy (ISE), Universiti Tenaga Nasional, Jalan Ikram-UNITEN, 43000 Kajang, Selangor Malaysia
| | - Abd Halim Shamsuddin
- Institute of Sustainable Energy (ISE), Universiti Tenaga Nasional, Jalan Ikram-UNITEN, 43000 Kajang, Selangor Malaysia
| | - Pau Loke Show
- Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga, 43500 Semenyih, Selangor Darul Ehsan Malaysia
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22
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Min T, Niu LF, Feng XY, Yi Y, Wang LM, Zhao Y, Wang HX. The effects of different temperatures on the storage characteristics of lotus (Nelumbo nucifera G.) root. Food Chem 2021; 348:129109. [PMID: 33524694 DOI: 10.1016/j.foodchem.2021.129109] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 01/11/2021] [Accepted: 01/11/2021] [Indexed: 01/21/2023]
Abstract
Lotus root (Nelumbo nucifera G.) is a high economic value crop in the world. In this study, the storage characteristics (color, sensory, texture, and fatty acids) of lotus root ("Elian No.5″) were evaluated at different harvest periods (September 2018, October 2018, November 2018, December 2018, and January 2019). Moreover, the storage characteristics were evaluated after the short- term and long-term storage of lotus root at 4 °C and 20 °C. The hardness of lotus root significantly decreased at both temperatures (4 °C and 20 °C) during the first 3 days of storage. In contrast, the decrease in hardness delayed at 4 °C (beyond 3 days of storage). Further, genes related to hardness at different storage temperatures were identified using the RNA-seq and qRT-PCR. The results of this study provide a reference for lotus root storage and a basis for the molecular breeding of longterm-storable lotus root.
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Affiliation(s)
- Ting Min
- College of Food Science & Engineering, Wuhan Polytechnic University, Wuhan 430023, China; Hubei Key Laboratory for Processing and Transformation of Agricultural Products (Wuhan Polytechnic University), China
| | - Li-Fang Niu
- College of Food Science & Engineering, Wuhan Polytechnic University, Wuhan 430023, China
| | - Xiang-Yang Feng
- College of Food Science & Engineering, Wuhan Polytechnic University, Wuhan 430023, China
| | - Yang Yi
- College of Food Science & Engineering, Wuhan Polytechnic University, Wuhan 430023, China; Hubei Key Laboratory for Processing and Transformation of Agricultural Products (Wuhan Polytechnic University), China
| | - Li-Mei Wang
- School Biology and Pharmaceutical Engineering, Wuhan Polytechnic University, Wuhan 430023, China
| | - Yun Zhao
- College of Food Science & Engineering, Wuhan Polytechnic University, Wuhan 430023, China
| | - Hong-Xun Wang
- School Biology and Pharmaceutical Engineering, Wuhan Polytechnic University, Wuhan 430023, China; Hubei Key Laboratory for Processing and Transformation of Agricultural Products (Wuhan Polytechnic University), China.
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23
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Borys BS, Dang T, So T, Rohani L, Revay T, Walsh T, Thompson M, Argiropoulos B, Rancourt DE, Jung S, Hashimura Y, Lee B, Kallos MS. Overcoming bioprocess bottlenecks in the large-scale expansion of high-quality hiPSC aggregates in vertical-wheel stirred suspension bioreactors. Stem Cell Res Ther 2021; 12:55. [PMID: 33436078 PMCID: PMC7805206 DOI: 10.1186/s13287-020-02109-4] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 12/21/2020] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Human induced pluripotent stem cells (hiPSCs) hold enormous promise in accelerating breakthroughs in understanding human development, drug screening, disease modeling, and cell and gene therapies. Their potential, however, has been bottlenecked in a mostly laboratory setting due to bioprocess challenges in the scale-up of large quantities of high-quality cells for clinical and manufacturing purposes. While several studies have investigated the production of hiPSCs in bioreactors, the use of conventional horizontal-impeller, paddle, and rocking-wave mixing mechanisms have demonstrated unfavorable hydrodynamic environments for hiPSC growth and quality maintenance. This study focused on using computational fluid dynamics (CFD) modeling to aid in characterizing and optimizing the use of vertical-wheel bioreactors for hiPSC production. METHODS The vertical-wheel bioreactor was modeled with CFD simulation software Fluent at agitation rates between 20 and 100 rpm. These models produced fluid flow patterns that mapped out a hydrodynamic environment to guide in the development of hiPSC inoculation and in-vessel aggregate dissociation protocols. The effect of single-cell inoculation on aggregate formation and growth was tested at select CFD-modeled agitation rates and feeding regimes in the vertical-wheel bioreactor. An in-vessel dissociation protocol was developed through the testing of various proteolytic enzymes and agitation exposure times. RESULTS CFD modeling demonstrated the unique flow pattern and homogeneous distribution of hydrodynamic forces produced in the vertical-wheel bioreactor, making it the opportune environment for systematic bioprocess optimization of hiPSC expansion. We developed a scalable, single-cell inoculation protocol for the culture of hiPSCs as aggregates in vertical-wheel bioreactors, achieving over 30-fold expansion in 6 days without sacrificing cell quality. We have also provided the first published protocol for in-vessel hiPSC aggregate dissociation, permitting the entire bioreactor volume to be harvested into single cells for serial passaging into larger scale reactors. Importantly, the cells harvested and re-inoculated into scaled-up vertical-wheel bioreactors not only maintained consistent growth kinetics, they maintained a normal karyotype and pluripotent characterization and function. CONCLUSIONS Taken together, these protocols provide a feasible solution for the culture of high-quality hiPSCs at a clinical and manufacturing scale by overcoming some of the major documented bioprocess bottlenecks.
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Affiliation(s)
- Breanna S Borys
- Pharmaceutical Production Research Facility, Schulich School of Engineering, University of Calgary, 2500 University Dr. NW, Calgary, AB, T2N 1N4, Canada
- Biomedical Engineering Graduate Program, University of Calgary, 2500 University Dr. NW, Calgary, AB, T2N 1N4, Canada
- Department of Chemical and Petroleum Engineering, Schulich School of Engineering, University of Calgary, 2500 University Dr. NW, Calgary, AB, T2N 1N4, Canada
| | - Tiffany Dang
- Pharmaceutical Production Research Facility, Schulich School of Engineering, University of Calgary, 2500 University Dr. NW, Calgary, AB, T2N 1N4, Canada
- Biomedical Engineering Graduate Program, University of Calgary, 2500 University Dr. NW, Calgary, AB, T2N 1N4, Canada
- Department of Chemical and Petroleum Engineering, Schulich School of Engineering, University of Calgary, 2500 University Dr. NW, Calgary, AB, T2N 1N4, Canada
| | - Tania So
- Pharmaceutical Production Research Facility, Schulich School of Engineering, University of Calgary, 2500 University Dr. NW, Calgary, AB, T2N 1N4, Canada
- Department of Chemical and Petroleum Engineering, Schulich School of Engineering, University of Calgary, 2500 University Dr. NW, Calgary, AB, T2N 1N4, Canada
| | - Leili Rohani
- Department of Biochemistry and Molecular Biology, Cumming School of Medicine, University of Calgary, 3330 Hospital Dr. NW, Calgary, AB, T2N 4N1, Canada
| | - Tamas Revay
- Department of Medical Genetics, Alberta Health Services, Alberta Children's Hospital, 28 Oki Drive, Calgary, AB, T3B 6A8, Canada
| | - Tylor Walsh
- Pharmaceutical Production Research Facility, Schulich School of Engineering, University of Calgary, 2500 University Dr. NW, Calgary, AB, T2N 1N4, Canada
- Biomedical Engineering Graduate Program, University of Calgary, 2500 University Dr. NW, Calgary, AB, T2N 1N4, Canada
- Department of Chemical and Petroleum Engineering, Schulich School of Engineering, University of Calgary, 2500 University Dr. NW, Calgary, AB, T2N 1N4, Canada
| | - Madalynn Thompson
- Department of Biochemistry and Molecular Biology, Cumming School of Medicine, University of Calgary, 3330 Hospital Dr. NW, Calgary, AB, T2N 4N1, Canada
| | - Bob Argiropoulos
- Department of Medical Genetics, Alberta Health Services, Alberta Children's Hospital, 28 Oki Drive, Calgary, AB, T3B 6A8, Canada
| | - Derrick E Rancourt
- Department of Biochemistry and Molecular Biology, Cumming School of Medicine, University of Calgary, 3330 Hospital Dr. NW, Calgary, AB, T2N 4N1, Canada
| | - Sunghoon Jung
- PBS Biotech Inc, 1183 Calle Suerte, Camarillo, CA, 93012, USA
| | - Yas Hashimura
- PBS Biotech Inc, 1183 Calle Suerte, Camarillo, CA, 93012, USA
| | - Brian Lee
- PBS Biotech Inc, 1183 Calle Suerte, Camarillo, CA, 93012, USA
| | - Michael S Kallos
- Pharmaceutical Production Research Facility, Schulich School of Engineering, University of Calgary, 2500 University Dr. NW, Calgary, AB, T2N 1N4, Canada.
- Biomedical Engineering Graduate Program, University of Calgary, 2500 University Dr. NW, Calgary, AB, T2N 1N4, Canada.
- Department of Chemical and Petroleum Engineering, Schulich School of Engineering, University of Calgary, 2500 University Dr. NW, Calgary, AB, T2N 1N4, Canada.
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24
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Rodrigues NP, Brochier B, de Medeiros JK, Marczak LDF, Mercali GD. Phenolic profile of sugarcane juice: Effects of harvest season and processing by ohmic heating and ultrasound. Food Chem 2021; 347:129058. [PMID: 33486367 DOI: 10.1016/j.foodchem.2021.129058] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [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: 06/04/2020] [Revised: 01/04/2021] [Accepted: 01/05/2021] [Indexed: 11/25/2022]
Abstract
In the present work, a comprehensive phenolic analysis of fresh sugarcane juice from three different harvest seasons was performed and the effect of ohmic heating and ultrasound treatments on the phenolic content and color of the juice was evaluated. Among the 32 phenolic compounds identified, a total of 17 were quantified, comprising, in decreasing order of abundance, flavones (38-49 mg/L), dilignols (22-29 mg/L), and phenolic acid derivatives (17-30 mg/L). The main phenolic groups affected by the crop season (year and season) were flavones and phenolic acid derivatives. Juice treated by ohmic heating and ultrasound showed a total phenolic content similar to fresh juice, indicating the absence of additional non-thermal effects. Regarding color, both treatments promoted only a slight difference by visual perception. Considering these two quality parameters, ultrasound and ohmic heating seem to be a good alternative for sugarcane juice pasteurization.
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Affiliation(s)
- Naira Poerner Rodrigues
- Department of Chemical Engineering, Federal University of Rio Grande do Sul (UFRGS), Ramiro Barcelos Street 2777, Anexo I da Saúde, Postal Code: 90035-007 Porto Alegre, Rio Grande do Sul, Brazil.
| | - Bethania Brochier
- Department of Chemical Engineering, Federal University of Rio Grande do Sul (UFRGS), Ramiro Barcelos Street 2777, Anexo I da Saúde, Postal Code: 90035-007 Porto Alegre, Rio Grande do Sul, Brazil
| | - Jucelio Kulmann de Medeiros
- Department of Food Science, Institute of Food Science and Technology, Federal University of Rio Grande do Sul (UFRGS), Av. Bento Gonçalves, 9500, Campus do Vale, Prédio 43.212, Postal Code: 91501-970 Porto Alegre, Rio Grande do Sul, Brazil
| | - Ligia Damasceno Ferreira Marczak
- Department of Chemical Engineering, Federal University of Rio Grande do Sul (UFRGS), Ramiro Barcelos Street 2777, Anexo I da Saúde, Postal Code: 90035-007 Porto Alegre, Rio Grande do Sul, Brazil
| | - Giovana Domeneghini Mercali
- Department of Food Science, Institute of Food Science and Technology, Federal University of Rio Grande do Sul (UFRGS), Av. Bento Gonçalves, 9500, Campus do Vale, Prédio 43.212, Postal Code: 91501-970 Porto Alegre, Rio Grande do Sul, Brazil
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25
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Asmar O, Jeevan R, Iqbal A. Minimal Access Tendon Harvesting without a Harvester: A Cheap and Effective Alternative Technique Using a Plastic Yankauer Suction Tip. J Hand Surg Asian Pac Vol 2020; 25:515-517. [PMID: 33115347 DOI: 10.1142/s2424835520710010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Tendon grafting is a key component of hand reconstructive procedures. Commercially produced tendon harvesters facilitate this grafting process but are not always available. We present an innovative technique that allows tendon harvest to be undertaken using equipment readily available in all hospitals. Only a scalpel blade and a plastic Yankauer suction tip are required. Two simple and rapid modifications are made to the suction tip using the blade prior to its use. The described tool has been conceived, refined and used successfully by the authors, without complications, and allows tendon harvest via the standard minimally invasive approach associated with a conventional harvester. Creating this improvised harvester is neither challenging nor time-consuming, and this cheap and effective substitute allows tendon grafts to be harvested using a minimal access approach in environments where a traditional harvester is not available, or not sterile.
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Affiliation(s)
- Omar Asmar
- Mersey Regional Burn and Plastic Surgery Unit, St Helens and Knowsley Teaching Hospitals NHS Trust, Whiston Hospital, Merseyside, UK
| | - Ranjeet Jeevan
- Mersey Regional Burn and Plastic Surgery Unit, St Helens and Knowsley Teaching Hospitals NHS Trust, Whiston Hospital, Merseyside, UK
| | - Azhar Iqbal
- Mersey Regional Burn and Plastic Surgery Unit, St Helens and Knowsley Teaching Hospitals NHS Trust, Whiston Hospital, Merseyside, UK
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26
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Devasia AJ, Abraham MA, Sagadevan C, Korula A, Kulkarni U, Fouzia NA, Abraham A, Srivastava A, Mathews V, George SP, George B. Safety of peripheral blood stem cell harvest in children under anaesthesia in the day care setting - A single centre experience. Transfus Apher Sci 2020; 60:102962. [PMID: 33051092 DOI: 10.1016/j.transci.2020.102962] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 09/17/2020] [Accepted: 09/28/2020] [Indexed: 11/29/2022]
Abstract
The use of cytokine mobilized peripheral blood stem cells (PBSC) for stem cell transplantation offers early engraftment, and less early transplant related mortality and morbidity. This can be done easily in the out-patient setting in an adult donor, but is difficult in children. The safety and efficacy of general anaesthesia outside the controlled operation room setting is quite challenging and demanding. We present our experience with paediatric PBSC harvest done under anaesthesia in the out-patient setting between January 2009 to June 2017. A total of 158 children underwent 164 PBSC harvests during the study period. Donors were predominantly females with a median age of 5 years (1-12) and a median weight of 17.5 kg (9.4-51). In 50% of the cases, induction of anaesthesia was by sevoflurane followed by total intravenous anaesthesia (TIVA) while in 32% it was sevoflurane induction followed by sedation. Hudson mask (48.5%) and laryngeal mask airway (50%) were the most common modes of airway and all patients were ventilated in the spontaneous mode. Propofol was the most commonly used maintenance agent (67%). There were no major complications except for acute pulmonary edema secondary to infusion of blood products requiring a short stay in ICU for one donor. All donors were discharged on the next day of harvest. No long term complications have been reported in any of these donors. Paediatric PBSC harvest can be safely done under anaesthesia with due precautions in the day care setting.
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Affiliation(s)
- Anup J Devasia
- Department of Haematology, Christian Medical College, Vellore, India.
| | | | | | - Anu Korula
- Department of Haematology, Christian Medical College, Vellore, India
| | - Uday Kulkarni
- Department of Haematology, Christian Medical College, Vellore, India
| | - N A Fouzia
- Department of Haematology, Christian Medical College, Vellore, India
| | - Aby Abraham
- Department of Haematology, Christian Medical College, Vellore, India
| | - Alok Srivastava
- Department of Haematology, Christian Medical College, Vellore, India
| | - Vikram Mathews
- Department of Haematology, Christian Medical College, Vellore, India
| | | | - Biju George
- Department of Haematology, Christian Medical College, Vellore, India
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27
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Morales J, Salvador A, Besada C, Navarro P, Bermejo A. Physico-chemical, sensorial and nutritional quality during the harvest season of 'Tango' mandarins grafted onto Carrizo Citrange and Forner-Alcaide no. 5. Food Chem 2020; 339:127781. [PMID: 32861931 DOI: 10.1016/j.foodchem.2020.127781] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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: 10/31/2019] [Revised: 05/22/2020] [Accepted: 08/03/2020] [Indexed: 01/08/2023]
Abstract
'Tango' mandarin is becoming one of the most demanded varieties in the Mediterranean Region. However, no information on the quality of 'Tango' fruit in this citrus area has been reported. In this study, the physico-chemical, nutritional and sensorial quality of 'Tango' mandarins grafted onto Carrizo Citrange and FA5 rootstocks from two locations (Sevilla and Huelva) was evaluated by harvest season. The fruit from Sevilla exhibited lower levels of acids and sugars than those from Huelva, which was associated with a higher sandy soil percentage in the Huelva orchard. In both orchards, the FA5-produced fruit had higher sugars and acids. Flavonoids were affected mainly by location, and the Huelva fruit exhibited the highest levels. The highest vitamin C was for the FA5 fruit. The decreased antioxidant capacity observed throughout the harvest season was related to reduced vitamin C. The sensorial evaluation corroborated changes in the quality parameters.
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Affiliation(s)
- Julia Morales
- InstitutoValenciano de InvestigacionesAgrarias, Postharvest Department, 46113 Valencia, Spain
| | - Alejandra Salvador
- InstitutoValenciano de InvestigacionesAgrarias, Postharvest Department, 46113 Valencia, Spain.
| | - Cristina Besada
- InstitutoValenciano de InvestigacionesAgrarias, Postharvest Department, 46113 Valencia, Spain
| | - Pilar Navarro
- InstitutoValenciano de InvestigacionesAgrarias, Postharvest Department, 46113 Valencia, Spain
| | - Almudena Bermejo
- InstitutoValenciano de InvestigacionesAgrarias, Postharvest Department, 46113 Valencia, Spain
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28
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Lemmens E, Alós E, Rymenants M, De Storme N, Keulemans WJ. Dynamics of ascorbic acid content in apple (Malus x domestica) during fruit development and storage. Plant Physiol Biochem 2020; 151:47-59. [PMID: 32197136 DOI: 10.1016/j.plaphy.2020.03.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 02/21/2020] [Accepted: 03/03/2020] [Indexed: 06/10/2023]
Abstract
Vitamin C is a crucial antioxidant and cofactor for both plants and humans. Apple fruits generally contain low levels of vitamin C, making vitamin C content an interesting trait for apple crop improvement. With the aim of breeding high vitamin C apple cultivars it is important to get an insight in the natural biodiversity of vitamin C content in apple fruits. In this study, quantification of ascorbic acid (AsA), dehydroascorbic acid (DHA), and total AsA (AsA + DHA) in apple pulp of 79 apple accessions at harvest revealed significant variation, indicating a large genetic biodiversity. High density genotyping using an 8 K SNP array identified 21 elite and 58 local cultivars in this germplasm, with local accessions showing similar levels of total AsA but higher amounts of DHA compared to elite varieties. Out of the 79 apple cultivars screened, ten genotypes with either the highest or the lowest concentration of total AsA at harvest were used for monitoring vitamin C dynamics during fruit development and storage. For all these cultivars, the AsA/DHA ratio in both apple pulp and peel increased throughout fruit development, whereas the AsA/DHA balance always shifted towards the oxidized form during storage and shelf life, putatively reflecting an abiotic stress response. Importantly, at any point during apple fruit development and storage, the apple peel contained a higher level of vitamin C compared to the pulp, most likely because of its direct exposure to abiotic and biotic stresses.
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Affiliation(s)
- Eline Lemmens
- Laboratory for Plant Genetics and Crop Improvement, KU Leuven, Willem de Croylaan 42, B-3001, Leuven, Belgium.
| | - Enriqueta Alós
- Laboratory for Plant Genetics and Crop Improvement, KU Leuven, Willem de Croylaan 42, B-3001, Leuven, Belgium
| | - Marijn Rymenants
- Laboratory for Plant Genetics and Crop Improvement, KU Leuven, Willem de Croylaan 42, B-3001, Leuven, Belgium; Better3fruit N.V., Steenberg 36, B-3202, Rillaar, Belgium
| | - Nico De Storme
- Laboratory for Plant Genetics and Crop Improvement, KU Leuven, Willem de Croylaan 42, B-3001, Leuven, Belgium
| | - Wannes Johan Keulemans
- Laboratory for Plant Genetics and Crop Improvement, KU Leuven, Willem de Croylaan 42, B-3001, Leuven, Belgium
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29
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Navajas-Porras B, Pérez-Burillo S, Morales-Pérez J, Rufián-Henares JA, Pastoriza S. Relationship of quality parameters, antioxidant capacity and total phenolic content of EVOO with ripening state and olive variety. Food Chem 2020; 325:126926. [PMID: 32387954 DOI: 10.1016/j.foodchem.2020.126926] [Citation(s) in RCA: 13] [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: 01/27/2020] [Revised: 04/21/2020] [Accepted: 04/25/2020] [Indexed: 01/03/2023]
Abstract
The aim of this work was to study the evolution of quality parameters, fatty acid composition, antioxidant capacity and total phenolic content of olive oil obtained from two olive varieties (Manzanilla and Picual) with different maturation. Antioxidant capacity and total phenolic content were measured after submitting the olive oil to in vitro digestion and fermentation to mimic physiological conditions. Quality parameters were always within the legal limits to be called "Extra Virgin Olive Oil". Antioxidant capacity, total phenolic content, saturated fatty acids and monounsaturated fatty acids (MUFA) decreased along maturation, whereas polyunsaturated fatty acids (PUFA) increased in both varieties. Manzanilla showed higher PUFA content, whereas Picual had higher MUFA concentration, antioxidant capacity and total phenolic content. The fermented fraction of olive oil displayed a higher antioxidant capacity. Finally, the statistical approach demonstrated that the type of variety is more important than collection date regarding fatty acid composition and antioxidant capacity.
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Affiliation(s)
- B Navajas-Porras
- Departamento de Nutrición y Bromatología, Instituto de Nutrición y Tecnología de Alimentos, Centro de Investigación Biomédica, Universidad de Granada, Granada, Spain
| | - S Pérez-Burillo
- Departamento de Nutrición y Bromatología, Instituto de Nutrición y Tecnología de Alimentos, Centro de Investigación Biomédica, Universidad de Granada, Granada, Spain
| | - J Morales-Pérez
- Departamento de Nutrición y Bromatología, Instituto de Nutrición y Tecnología de Alimentos, Centro de Investigación Biomédica, Universidad de Granada, Granada, Spain
| | - J A Rufián-Henares
- Departamento de Nutrición y Bromatología, Instituto de Nutrición y Tecnología de Alimentos, Centro de Investigación Biomédica, Universidad de Granada, Granada, Spain; Instituto de Investigación Biosanitaria ibs.GRANADA, Universidad de Granada, Spain.
| | - S Pastoriza
- Departamento de Nutrición y Bromatología, Instituto de Nutrición y Tecnología de Alimentos, Centro de Investigación Biomédica, Universidad de Granada, Granada, Spain
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Rafiee P, Ebrahimi S, Hosseini M, Tong YW. Characterization of Soluble Algal Products (SAPs) after electrocoagulation of a mixed algal culture. ACTA ACUST UNITED AC 2020; 25:e00433. [PMID: 32090025 PMCID: PMC7026287 DOI: 10.1016/j.btre.2020.e00433] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [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: 07/30/2019] [Revised: 02/09/2020] [Accepted: 02/09/2020] [Indexed: 11/26/2022]
Abstract
The dewatering of algal culture requires coagulation of the algal cells. However, the coagulation in a continuous operation is slowed down through the excretion of Soluble Algal Products (SAPs). Electrocoagulation (EC), already utilized as a coagulation technique, has been investigated for its effects on SAPs characterizations. A mixed culture of Chlorella vulgaris, Scenedesmus Obliquus, Botryococcus braunii, Botryococcus sudeticus, and Afrocarpus falcatus was prepared and SAPs characteristics, including Specific Ultra Violet Absorbance (SUVA), Zeta potential, Molecular Weight (MW) fractionation, Dissolved Organic Carbon (DOC), protein and carbohydrate content, Excitation-Emission Matrix, and hydrophobicity using XAD resins, were measured and evaluated before and after electrocoagulation using mild steel and aluminum electrodes at 5 and 10 min. The results showed several improvements after EC. According to results, EC can render SAPs hydrophobicity up to 95 %, and the fluorescence peak results showed the complete removal of humic-like. Moreover, the SAPs were removed up to 21, 60, and 47 % for protein, carbohydrate and DOC, respectively. Results collectively showed that electrocoagulation might be able to mitigate the negative effects of growth on flocculation.
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Affiliation(s)
- Poorya Rafiee
- Biotechnology Research Centre, Faculty of Chemical Engineering, Sahand University of Technology, Tabriz, Iran
| | - Sirous Ebrahimi
- Biotechnology Research Centre, Faculty of Chemical Engineering, Sahand University of Technology, Tabriz, Iran.,Department of Biotechnology, Delft University of Technology, Delft, Netherlands
| | - Maryam Hosseini
- Faculty of Chemical Engineering, Azarbaijan Shahid Madani University, Tabriz, Iran
| | - Yen Wah Tong
- Chemical Engineering Department, National University of Singapore, Singapore
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Abstract
Environmental noises often affect population dynamics, and hence many benefits are gained in using stochastic models since real life is full of stochasticity and randomness. In this paper a stochastic extension of a model by Asfaw et al. (Int J Biomath 11:1850057, 2018) is considered. Due to the non-linearity of the model, first, a simplified stochastic plant-herbivore model is formulated and analyzed for its global Lipschitz continuity, positivity, existence and uniqueness of solutions. Second, the analysis is extended to a more complex and realistic model. Numerical simulations using Euler-Maruyama method are employed to demonstrate the long term dynamics. It was found that the noise added to the herbivore population resulted more change in the dynamics than the noise added to the plant population (food source). Ignoring the environmental noise could make the land management and wild life conservation not to maintain their goals.
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Affiliation(s)
| | - Semu Mitiku Kassa
- Department of Mathematics and Statistical Sciences, Botswana International University of Science and Technology (BIUST), P/Bag 16, Palapye, Botswana
| | - Edward M Lungu
- Department of Mathematics and Statistical Sciences, Botswana International University of Science and Technology (BIUST), P/Bag 16, Palapye, Botswana
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Nogoy KM, Zhang Y, Lee YH, Li XZ, Seong HA, Choi SH. Nutrient composition and in vitro fermentability of corn grain and stover harvested at different periods in Goesan, a mountainous area. J Anim Sci Technol 2019; 61:18-27. [PMID: 31333857 PMCID: PMC6582919 DOI: 10.5187/jast.2019.61.1.18] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 01/16/2019] [Accepted: 01/19/2019] [Indexed: 11/20/2022]
Abstract
With South Korea's limited capability of feed production because of its relatively small cultivable area, the country is pushed to depend on foreign feed imports despite the immensely fluctuating price of corn. Hence, intensive efforts to increase the total cultivable area in Korea like extending of farming to mountainous area is being practiced. Corn was planted in Goesan County, a mountainous area in the country. Grain and stover were harvested separately in three harvest periods: early-harvest (Aug 8), mid-harvest (Aug 18), and late-harvest (Aug 28). The nutrient composition such as dry matter (DM), crude protein (CP), crude fat (EE), organic matter (OM), neutral detergent fiber (NDF), acid detergent fiber (ADF), and non-fibrous carbohydrates (NFC) was determined after harvest. Effective degradability (ED) of the major nutrients (DM, NDF, ADF, and CP) were measured through in vitro fermentation of rumen fluid from Hanwoo (Korean cattle). pH, ammonia-N concentration, volatile fatty acid (VFA) concentration, and gas production were periodically measured at 0, 3, 6, 12, 24, 48, and 72 h. Corn grain showed higher nutrient content and ED than stover. It also had higher gas production but its pH, ammonia-N, and total VFA concentration were lower than corn stover. The best nutrient composition of corn grain was observed in early-harvest (high CP, EE, NDF, OM, NFC, and low ADF). Early-harvest of corn grain also had high effective degradability of dry matter (EDDM), effective degradability of neutral detergent fiber (EDNDF), effective degradability of acid detergent fiber (EDADF), and total VFA concentration. On the other hand, the best nutrient composition of stover was observed in mid-harvest (high DM, CP, NDF, and low ADF). EDDM, EDNDF, and EDADF were pronounced in early-harvest and mid-harvest of stover but the latter showed high total VFA concentration. Hence, early and mid-harvested corn stover and grain in a mountainous area preserved their nutrients, which led to the effective degradation of major nutrients and high VFA production.
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Affiliation(s)
- Kim Margarette Nogoy
- Department of Animal Science, Chungbuk National University, Cheongju 28644, Korea
| | - Yan Zhang
- Department of Animal Science, Chungbuk National University, Cheongju 28644, Korea
| | - Ye Hyun Lee
- Department of Animal Science, Chungbuk National University, Cheongju 28644, Korea
| | - Xiang Zi Li
- Co-Innovation Center of Beef Cattle Science and Industry Technology, Yanbian University, Yanji 133002, China
| | - Hyun A Seong
- Department of Biochemistry, Chungbuk National University, Cheongju 28644, Korea
| | - Seong Ho Choi
- Department of Animal Science, Chungbuk National University, Cheongju 28644, Korea
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Nisson PL, James WS, Berger GK, Wang X, Ding X. Occipital Artery Harvesting and Anastomosis to P3 Segment of Posterior Inferior Cerebellar Artery: Operative Video. World Neurosurg X 2019; 3:100023. [PMID: 31225517 DOI: 10.1016/j.wnsx.2019.100023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 02/06/2019] [Indexed: 11/23/2022] Open
Abstract
Aneurysms involving the origin of the posterior inferior cerebellar artery (PICA) have a greater incidence of fusiform morphology, intraluminal thrombi, and wall calcifications. At times, a complex treatment strategy with vessel occlusion and revascularization using a bypass graft is necessary for successful obliteration of these aneurysms. The occipital artery (OA) is often the preferred donor graft for lesions of the posterior fossa because of its proximity to the target recipient vessels. However, dissection of an OA can be challenging, given its anatomically tortuous path and the presence of thick surrounding muscles. This video captures the dissection of the OA using an unconventional, "inside-out" harvesting technique and the end-to-side anastomosis of the OA to the PICA at the p3 segment. This was performed in a 58-year-old man who presented with a subarachnoid hemorrhage (Hunt and Hess grade IV) from a ruptured fusiform aneurysm located at the origin of the right PICA. Major steps in Video 1 during this case include 1) dissection and harvesting of the OA using the "inside out" technique, 2) placement of 2 temporary clips occluding the PICA and isolating the P3 segment, 3) end-to-side OA-P3 anastomosis, and 4) removal of the temporary clips and confirmation of the PICA's patency using intraoperative indocyanine green. Due to the potential for infarction of the brainstem, the patient was started on dual antiplatelet therapy postoperatively. The patient tolerated the procedure well and suffered no major complications related to the operation or from being placed on dual antiplatelet therapy. He did experience some mild, posterior neck pain and rigidity at the time of his 3-month follow-up, likely due to nerve injury that occurred while harvesting the OA. Overall, the patient remains in good neurologic status 1 year after the operation. Complex fusiform aneurysms at the origin of PICA can be successfully treated via an OA-PICA bypass.
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Turner R, Joseph A, Titchener-Hooker N, Bender J. Manufacturing of Proteins and Antibodies: Chapter Downstream Processing Technologies. Adv Biochem Eng Biotechnol 2019; 165:95-114. [PMID: 28776064 DOI: 10.1007/10_2016_54] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2023]
Abstract
Cell harvesting is the separation or retention of cells and cellular debris from the supernatant containing the target molecule Selection of harvest method strongly depends on the type of cells, mode of bioreactor operation, process scale, and characteristics of the product and cell culture fluid. Most traditional harvesting methods use some form of filtration, centrifugation, or a combination of both for cell separation and/or retention. Filtration methods include normal flow depth filtration and tangential flow microfiltration. The ability to scale down predictably the selected harvest method helps to ensure successful production and is critical for conducting small-scale characterization studies for confirming parameter targets and ranges. In this chapter we describe centrifugation and depth filtration harvesting methods, share strategies for harvest optimization, present recent developments in centrifugation scale-down models, and review alternative harvesting technologies.
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Affiliation(s)
- Richard Turner
- MedImmune LLC Gaithersburg Headquarters, One MedImmune Way, Gaithersburg, MD, 20878, USA
| | - Adrian Joseph
- The Advanced Centre of Biochemical Engineering, Department of Biochemical Engineering, University College London, Bernard Katz Building, London, WC1E 6BT, UK
| | - Nigel Titchener-Hooker
- The Advanced Centre of Biochemical Engineering, Department of Biochemical Engineering, University College London, Bernard Katz Building, London, WC1E 6BT, UK
| | - Jean Bender
- MedImmune LLC Gaithersburg Headquarters, One MedImmune Way, Gaithersburg, MD, 20878, USA.
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Moussavi M, Lieberman V, Theofel C, Barouei J, Harris LJ. Growth of Salmonella and Other Foodborne Pathogens on Inoculated Inshell Pistachios during Simulated Delays between Hulling and Drying. J Food Prot 2019; 82:815-825. [PMID: 30995131 DOI: 10.4315/0362-028x.jfp-18-450] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [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: 11/11/2022]
Abstract
During harvest, pistachios are hulled, separated in water into floater and sinker streams (in large part on the basis of nut density), and then dried before storage. Higher prevalence and levels of Salmonella were previously observed in floater pistachios, but contributing factors are unclear. To examine the behavior of pathogens on hulled pistachios during simulated drying delays, floater and sinker pistachios collected from commercial processors were inoculated at 1 or 3 log CFU/g with cocktails of Salmonella and in some cases Escherichia coli O157:H7 or Listeria monocytogenes and incubated for up to 30 h at 37°C and 90% relative humidity. Populations were measured by plating onto tryptic soy agar and appropriate selective agars. In most cases, no significant growth (P > 0.05) of Salmonella was observed in the first 3 h after inoculation in hulled floaters and sinkers. Growth of Salmonella was greater on floater pistachios than on corresponding sinkers and on floater pistachios with ≥25% hull adhering to the shell surface than on corresponding floaters with <25% adhering hull. Maximum Salmonella populations (2 to 7 log CFU/g) were ∼2-log higher on floaters than on corresponding sinkers. The growth of E. coli O157:H7 and Salmonella on hulled pistachios was similar, but a longer lag time (approximately 11 h) and significantly lower maximum populations (4 versus 5 to 6 log CFU/g; P < 0.05) were predicted for L. monocytogenes. Significant growth of pathogens on hulled pistachios is possible when delays between hulling and drying are longer than 3 h, and pathogen growth is enhanced in the presence of adhering hull material.
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Affiliation(s)
- Mahta Moussavi
- Department of Food Science and Technology, University of California, One Shields Avenue, Davis, California 95616, USA (ORCID: https://orcid.org/0000-0002-1911-752X [L.J.H.])
| | - Vanessa Lieberman
- Department of Food Science and Technology, University of California, One Shields Avenue, Davis, California 95616, USA (ORCID: https://orcid.org/0000-0002-1911-752X [L.J.H.])
| | - Chris Theofel
- Department of Food Science and Technology, University of California, One Shields Avenue, Davis, California 95616, USA (ORCID: https://orcid.org/0000-0002-1911-752X [L.J.H.])
| | - Javad Barouei
- Department of Food Science and Technology, University of California, One Shields Avenue, Davis, California 95616, USA (ORCID: https://orcid.org/0000-0002-1911-752X [L.J.H.])
| | - Linda J Harris
- Department of Food Science and Technology, University of California, One Shields Avenue, Davis, California 95616, USA (ORCID: https://orcid.org/0000-0002-1911-752X [L.J.H.])
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Abstract
Salmonella has been isolated from dried pistachios in both postharvest and retail surveys. The source of Salmonella in pistachios is unknown, but introduction is possible at points during production, harvest, and postharvest activities. To examine the behavior of Salmonella on pistachios during simulated postharvest conditions, early-, mid-, and late-season inhull pistachios were collected from two commercial processors over five different harvests. Pistachios were inoculated with cocktails of nalidixic acid- or rifampin-resistant Salmonella at 0.64 to 1.59 log CFU/g (low) or 2.73 to 3.27 or 4.29 to 4.31 log CFU/g (high) and were incubated for up to 30 h under commercially relevant conditions (23, 35, or 37°C and 50 or 90% relative humidity [RH]). Populations of Salmonella were measured by plating onto tryptic soy agar and CHROMagar Salmonella with added nalidixic acid or rifampin. Individual growth curves at the same temperature and RH differed significantly among different lots of pistachios. Except for a single late-season lot in which no significant growth was observed, Salmonella multiplied under all storage conditions. In the first 3 h after inoculation, insignificant (most cases) to small (0.41 to 0.67 log CFU/g) but significant ( P < 0.05) mean increases in Salmonella populations were measured; the mean predicted time to achieve maximum populations (5 to 8 log CFU/g) was 16 ± 4 h. In paired samples, longer lag phases, lower growth rates, and lower maximum increases were observed with inoculated inhull pistachios incubated at 23°C and 50% RH compared with 35 or 37°C and 90% RH. Similar growth curves were observed at the low and high inoculum levels; throughout the 30 h of incubation, Salmonella populations were consistently ∼1 to 2 log CFU/g lower on pistachios inoculated at the low inoculum level. Managing the time between harvesting and hulling will reduce the potential for growth of Salmonella on pistachios during postharvest handling.
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Affiliation(s)
- Mahta Moussavi
- Department of Food Science and Technology, University of California, One Shields Avenue, Davis, California 95616, USA (ORCID http://orcid.org/0000-0002-1911-752X [L.J.H.])
| | - Vanessa Lieberman
- Department of Food Science and Technology, University of California, One Shields Avenue, Davis, California 95616, USA (ORCID http://orcid.org/0000-0002-1911-752X [L.J.H.])
| | - Chris Theofel
- Department of Food Science and Technology, University of California, One Shields Avenue, Davis, California 95616, USA (ORCID http://orcid.org/0000-0002-1911-752X [L.J.H.])
| | - Javad Barouei
- Department of Food Science and Technology, University of California, One Shields Avenue, Davis, California 95616, USA (ORCID http://orcid.org/0000-0002-1911-752X [L.J.H.])
| | - Linda J Harris
- Department of Food Science and Technology, University of California, One Shields Avenue, Davis, California 95616, USA (ORCID http://orcid.org/0000-0002-1911-752X [L.J.H.])
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Ângelo ACLPG, de Campos Azevedo CI. Minimally invasive fascia lata harvesting in ASCR does not produce significant donor site morbidity. Knee Surg Sports Traumatol Arthrosc 2019; 27:245-250. [PMID: 30069653 DOI: 10.1007/s00167-018-5085-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Accepted: 07/27/2018] [Indexed: 11/26/2022]
Abstract
PURPOSE The aim of this study was to prospectively evaluate donor site morbidity in arthroscopic superior capsular reconstruction using a minimally invasive harvested fascia lata autograft. METHODS Fifteen consecutive patients underwent arthroscopic superior capsular reconstruction by the senior author using a fascia lata autograft harvested in a minimally invasive fashion. All patients were prospectively evaluated at 1 week, 6 and 18 months postoperatively. The subjects' body mass index, age, actual or previous corticosteroid therapy history and active smoking habits were evaluated. Functional outcomes were assessed by the non-arthritic hip score applied to the harvested and contralateral thighs. Every patient completed standardized subjective satisfaction questionnaires at all evaluations. The median patient age was 65.5 years (range 47-77). Nine patients (60%) were females, and six (40%) were males. One patient (6.7%) was within the normal range of weight, nine (60%) were overweight, four (27%) were obese, and one (6.7%) was extremely obese. Two patients (13%) were active smokers. No patients had an active or previous record of corticosteroid therapy. No patients required postoperative lower limb physical therapy. RESULTS In terms of overall and cosmetic satisfaction, most patients reported that they were satisfied or very satisfied at all evaluations, and the proportion of very satisfied patients increased over time (p < 0.001). The harvested thigh's functional scores were 91% (p = 0.003) and 94% (p = 0.008) of the healthy thigh's score at 6 and 18 months, respectively. The complications reported were mild, and their proportions decreased in the first 18 months after surgery (p = 0.04). CONCLUSIONS The minimally invasive fascia lata harvesting technique for arthroscopic superior capsular reconstruction leads to donor site satisfactory subjective results and good functional outcomes at 18 months after surgery. According to these findings, donor site morbidity is not a valid argument against the use of this autograft for arthroscopic superior capsular reconstruction. LEVEL OF EVIDENCE Case series, level IV.
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Neumann M, Smith P. Carbon uptake by European agricultural land is variable, and in many regions could be increased: Evidence from remote sensing, yield statistics and models of potential productivity. Sci Total Environ 2018; 643:902-911. [PMID: 29960227 DOI: 10.1016/j.scitotenv.2018.06.268] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 06/18/2018] [Accepted: 06/21/2018] [Indexed: 06/08/2023]
Abstract
Agricultural plants, covering large parts of the global land surface and important for the livelihoods of people worldwide, fix carbon dioxide seasonally via photosynthesis. The carbon allocation of crops, however, remains relatively understudied compared to, for example, forests. For comprehensive consistent resource assessments or climate change impact studies large-scale reliable vegetation information is needed. Here, we demonstrate how robust data on carbon uptake in croplands can be obtained by combining multiple sources to enhance the reliability of estimates. Using yield statistics, a remote-sensing based productivity algorithm and climate-sensitive potential productivity, we mapped the potential to increase crop productivity and compared consistent carbon uptake information of agricultural land with forests. The productivity gap in Europe is higher in Eastern and Southern than in Central-Western countries. At continental scale, European agriculture shows a greater carbon uptake in harvestable compartments than forests (agriculture 1.96 vs. forests 1.76 t C ha-1 year-1). Mapping productivity gaps allows efforts to enhance crop production to be prioritized by, for example, improved crop cultivars, nutrient management or pest control. The concepts and methods for quantifying carbon uptake used in this study are applicable worldwide and allow forests and agriculture to be included in future carbon uptake assessments.
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Affiliation(s)
- Mathias Neumann
- Institute of Silviculture, Department of Forest- and Soil Sciences, University of Natural Resources and Life Sciences, Peter Jordan Straße 82, 1190 Vienna, Austria.
| | - Pete Smith
- Institute of Biological and Environmental Sciences, University of Aberdeen, 23 St Machar Drive, Room G45, Aberdeen AB24 3UU, Scotland, UK
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O'Connor BJ, Fryda NJ, Ranglack DH. Effects of environmental and anthropogenic landscape features on mule deer harvest in Nebraska. PeerJ 2018; 6:e5510. [PMID: 30221086 PMCID: PMC6136395 DOI: 10.7717/peerj.5510] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 08/02/2018] [Indexed: 11/20/2022] Open
Abstract
Understanding the habitat use of wildlife species is important for effective management. Nebraska has a variety of habitat types, with the majority being covered by rangeland and cropland. These habitat types likely influence the harvest of mule deer (MD; Odocoileus hemionus) in Nebraska, but their specific effects are unknown, and moreover, harvest may also be influenced by the accessibility of deer habitats for hunters. We modeled which environmental and anthropogenic landscape features influenced harvest densities. Spatial analysis in a Geographic Information System was used to determine the mean values of environmental and anthropogenic landscape features at the county level. We then used a generalized linear model to determine which of those factors influenced MD harvest from 2014-2016. We found that NDVI amplitude, hunter effort, road density, terrain roughness, and canopy cover influence MD harvest in Nebraska. According to our model, MD harvest densities are significantly greater areas with NDVI amplitude ∼38, increasing hunter effort, road densities near 1,750 m/km2, increasing terrain roughness, and decreasing canopy cover. Understanding increased harvest densities of MD can be beneficial for wildlife managers, allowing for more efficient allocation of efforts and expenses by managers for population management.
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Affiliation(s)
- Bryan J O'Connor
- Department of Biology, University of Nebraska - Kearney, Kearney, NE, United States of America
| | - Nicolas J Fryda
- Nebraska Game and Parks Commision, Kearney, NE, United States of America
| | - Dustin H Ranglack
- Department of Biology, University of Nebraska - Kearney, Kearney, NE, United States of America
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Zhao Y, Wang X, Jiang X, Fan Q, Li X, Jiao L, Liang W. Harvesting of Chlorella vulgaris using Fe 3O 4 coated with modified plant polyphenol. Environ Sci Pollut Res Int 2018; 25:26246-26258. [PMID: 29978312 DOI: 10.1007/s11356-018-2677-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Accepted: 06/27/2018] [Indexed: 06/08/2023]
Abstract
The Chlorella vulgaris harvesting was explored by magnetic separation using Fe3O4 particles coated with the plant polyphenol chemically modified by a Mannich reaction followed by quaternization (Fe3O4@Q-PP). The -N(R)4+ and Cl-N+-C perssad of the Q-PP were linked to the Fe3O4 particles by N-O bonds, as suggested by the X-ray photoelectron spectroscopy spectra. The thermogravimetric analysis displayed the mass percentage of the Q-PP coated on the Fe3O4 surface was close to ~ 5%. Compared with the naked Fe3O4 particles, zeta potentials of the Fe3O4@Q-PP particles were improved from the range of - 17.5~- 25.6 mV to 1.9~36.3 mV at pH 2.1~13.1. A 70.2 G coercive force was obtained for the Fe3O4@Q-PP composite, which demonstrated its ferromagnetic behavior. The use of Fe3O4@Q-PP resulted in a harvesting efficiency of 90.9% of C. vulgaris cells (3.06 g/L). The Fe3O4 particles could be detached from the cell flocs by ultrasonication leading to a recovery efficiency of 96.1% after 10 cycles. The recovered Fe3O4 could be re-coated with Q-PP and led to a harvesting efficiency of 80.2% after 10 cycles. The magnetic separation using Fe3O4@Q-PP included charge neutralization followed by bridging and then colloid entrapment.
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Affiliation(s)
- Yuan Zhao
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, No. 35 Qinghua East Road Haidian District, Beijing, 100083, China
| | - Xiaoyu Wang
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, No. 35 Qinghua East Road Haidian District, Beijing, 100083, China
| | - Xiaoxue Jiang
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, No. 35 Qinghua East Road Haidian District, Beijing, 100083, China
| | - Qianlong Fan
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, No. 35 Qinghua East Road Haidian District, Beijing, 100083, China
| | - Xue Li
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, No. 35 Qinghua East Road Haidian District, Beijing, 100083, China
| | - Liyang Jiao
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, No. 35 Qinghua East Road Haidian District, Beijing, 100083, China
| | - Wenyan Liang
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, No. 35 Qinghua East Road Haidian District, Beijing, 100083, China.
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Tanaka TST, Irbis C, Hama Y, Wang P, Li K, Inamura T. A small proportion of litter-derived nitrogen is assimilated by plant biomass or immobilized in sediments regardless of harvest management as detected by 15N-labeled Phragmites litter in a constructed wetland. J Environ Manage 2018; 217:888-896. [PMID: 29665568 DOI: 10.1016/j.jenvman.2018.03.045] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 03/06/2018] [Accepted: 03/11/2018] [Indexed: 06/08/2023]
Abstract
Emergent aquatic macrophytes play an important role in the removal of nutrients in constructed wetlands (CWs). However, plant biomass supplies litter after the onset of senescence. Although litter-derived nitrogen (N) has been considered a nutrient source for the internal loading that may reduce CW performance, little is known about the quantitative N dynamics associated with litter decomposition. Thus, a controversial question remains about whether plant harvest is needed to manage CWs. In this study, we evaluated the decomposition and the fate of N derived from 15N-labeled Phragmites litter in a CW for 1 year. To simulate respective natural conditions, two treatments, including (1) a single winter harvest and (2) no harvest where the latter supplies a greater stem litterfall, were compared. Although the dry weight of the added stem litter was approximately 4.7 times larger in the no harvest plot than in the harvest plot, the total N content of the initial 15N-labeled litter was only 1.2 times higher in the no harvest plot than in the harvest plots because of the low N concentration in the stem litter. The litter functioned as a minor N sink within the first 6 months of decomposition, and it then shifted to functioning as a minor N source after 1 year of decomposition. The recovery of litter-derived N in the sediment and plant biomass was low (less than 10% of the initial litter N), and much of the remaining N might have been released into ambient water or lost through denitrification. Furthermore, our results suggested a potentially low contribution of litter-derived N to internal N loading for at least 1 year regardless of the harvest management treatment.
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Affiliation(s)
- Takashi S T Tanaka
- Faculty of Life Science and Technology, Kunming University of Science and Technology, 727 Jingming Road (South), Chenggong New District, Kunming, Yunnan 650500, China; Graduate School of Agriculture, Kyoto University, Oiwake Kitashirakawa Sakyo, Kyoto, 606-8502, Japan
| | - Chagan Irbis
- Faculty of Life Science and Technology, Kunming University of Science and Technology, 727 Jingming Road (South), Chenggong New District, Kunming, Yunnan 650500, China.
| | - Yuki Hama
- Graduate School of Agriculture, Kyoto University, Oiwake Kitashirakawa Sakyo, Kyoto, 606-8502, Japan
| | - Pengyun Wang
- Kunming Agrometeorological Station, Xifu Road, Xishan District, Kunming, Yunnan 650500, China
| | - Kunzhi Li
- Faculty of Life Science and Technology, Kunming University of Science and Technology, 727 Jingming Road (South), Chenggong New District, Kunming, Yunnan 650500, China
| | - Tatsuya Inamura
- Graduate School of Agriculture, Kyoto University, Oiwake Kitashirakawa Sakyo, Kyoto, 606-8502, Japan
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Ishii Y, Fujisawa S, Nigauri C, Ando T, Suzuki T, Ogusa E, Miyashita K, Motohashi K, Nakajima H. Peripheral Blood Monocyte Count is a Predictor of Successful Peripheral Blood Stem Cell Harvest After Chemo-Mobilization in Patients with Malignant Lymphoma. Indian J Hematol Blood Transfus 2018; 34:347-9. [PMID: 29622882 DOI: 10.1007/s12288-017-0848-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Accepted: 07/04/2017] [Indexed: 10/19/2022] Open
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Ng SK, Lu CT, Pakneshan S, Leung M, Siu S, Lam AK. Harvest of lymph nodes in colorectal cancer depends on demographic and clinical characteristics of the patients. Int J Colorectal Dis 2018; 33:19-22. [PMID: 29134274 DOI: 10.1007/s00384-017-2927-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/22/2017] [Indexed: 02/04/2023]
Abstract
PURPOSE This study aims to study the impact of clinical factors on the lymph node sampling in a large cohort of patients with colorectal cancer. METHODS A colorectal cancer database of 2298 patients in Queensland, Australia, was established. Zero-inflated regression method was used to model positive lymph node counts given the number of lymph nodes examined, with patient's demographic and clinical factors as covariates in the model. Sensitivity and survival analyses were performed to illustrate the applicability of the recommendation of the minimum number of lymph nodes need to be pathologically examined. RESULTS Younger patients with a larger sized tumour located at the left colon or rectum require fewer lymph nodes to be pathologically examined. Overall, 45.9% of the patients require eight or nine lymph nodes and 31.5% needs ten or 11 lymph nodes to be harvested for pathological examination. A simple formula could be used to obtain the minimum number of lymph node sampling required in patients with colorectal cancer based on patients' age as well as site and dimension of the cancer. CONCLUSIONS The findings provide practical information about that the minimum number of lymph nodes that could be harvested at the time of collection of lymph nodes for pathological examination for patients with colorectal cancer. The minimum number of lymph nodes harvested depends on demographic (age) and clinical (location and dimension of cancer) characteristics of the patients with colorectal cancer.
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Abstract
Sendai virus is a member of the family Paramyxoviridae, and an enveloped virus with a negative-stranded RNA genome. Sendai virus is not pathogenic to humans, but for mice and can cause pneumonia in mice. Easy and efficient techniques for propagating Sendai virus are required for studying virus replication, virus-induced innate- and adaptive-immunity, Sendai-virus-based virotherapy and IgA nephropathy. Here, we describe a protocol for Sendai virus propagation using chicken eggs. This traditional protocol enables us to generate a large amount of virus enough for animal experiments as well as cell culture experiments in a relatively inexpensive way.
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Affiliation(s)
- Narihito Tatsumoto
- Department of Pathology and Laboratory Medicine, Cedars-Sinai Medical Center, Los Angeles, USA
| | - Moshe Arditi
- Department of Pediatrics, Division of Pediatric Infectious Diseases and Immunology, Cedars-Sinai Medical Center, Los Angeles, USA.,Department of Biomedical Sciences, Infectious and Immunologic Diseases Research Center, Cedars-Sinai Medical Center, Los Angeles, USA
| | - Michifumi Yamashita
- Department of Pathology and Laboratory Medicine, Cedars-Sinai Medical Center, Los Angeles, USA
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Senf C, Pflugmacher D, Hostert P, Seidl R. Using Landsat time series for characterizing forest disturbance dynamics in the coupled human and natural systems of Central Europe. ISPRS J Photogramm Remote Sens 2017; 130:453-463. [PMID: 28860678 PMCID: PMC5572776 DOI: 10.1016/j.isprsjprs.2017.07.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Remote sensing is a key information source for improving the spatiotemporal understanding of forest ecosystem dynamics. Yet, the mapping and attribution of forest change remains challenging, particularly in areas where a number of interacting disturbance agents simultaneously affect forest development. The forest ecosystems of Central Europe are coupled human and natural systems, with natural and human disturbances affecting forests both individually and in combination. To better understand the complex forest disturbance dynamics in such systems, we utilize 32-year Landsat time series to map forest disturbances in five sites across Austria, the Czech Republic, Germany, Poland, and Slovakia. All sites consisted of a National Park and the surrounding forests, reflecting three management zones of different levels of human influence (managed, protected, strictly protected). This allowed for a comparison of spectral, temporal, and spatial disturbance patterns across a gradient from natural to coupled human and natural disturbances. Disturbance maps achieved overall accuracies ranging from 81% to 93%. Disturbance patches were generally small, with 95% of the disturbances being smaller than 10 ha. Disturbance rates ranged from 0.29% yr-1 to 0.95% yr-1, and differed substantially among management zones and study sites. Natural disturbances in strictly protected areas were longer in duration (median of 8 years) and slightly less variable in magnitude compared to human-dominated disturbances in managed forests (median duration of 1 year). However, temporal dynamics between natural and human-dominated disturbances showed strong synchrony, suggesting that disturbance peaks are driven by natural events affecting managed and unmanaged areas simultaneously. Our study demonstrates the potential of remote sensing for mapping forest disturbances in coupled human and natural systems, such as the forests of Central Europe. Yet, we also highlight the complexity of such systems in terms of agent attribution, as many natural disturbances are modified by management responding to them outside protected areas.
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Affiliation(s)
- Cornelius Senf
- Geography Department, Humboldt-Universität zu Berlin, Unter den Linden 6, 10099 Berlin, Germany
- Institute for Silviculture, University of Natural Resources and Life Sciences (BOKU) Vienna, Peter-Jordan-Str. 82, 1190 Vienna, Austria
| | - Dirk Pflugmacher
- Geography Department, Humboldt-Universität zu Berlin, Unter den Linden 6, 10099 Berlin, Germany
| | - Patrick Hostert
- Geography Department, Humboldt-Universität zu Berlin, Unter den Linden 6, 10099 Berlin, Germany
- Integrative Research Institute on Transformation of Human-Environment Systems (IRI THESys), Humboldt-Universität zu Berlin, Unter den Linden 6, 10099 Berlin, Germany
| | - Rupert Seidl
- Institute for Silviculture, University of Natural Resources and Life Sciences (BOKU) Vienna, Peter-Jordan-Str. 82, 1190 Vienna, Austria
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Drennan CL, DeOtte RE, Lawrence TE. Documentation of 50% water conservation in a single process at a beef abattoir. Meat Sci 2017; 131:183-186. [PMID: 28544978 DOI: 10.1016/j.meatsci.2017.05.016] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Revised: 05/16/2017] [Accepted: 05/17/2017] [Indexed: 11/18/2022]
Abstract
Beef slaughter is water intensive due to stringent food safety requirements. We conducted a study at a commercial beef processor to demonstrate water conservation by modifying the mechanical head wash. We documented the initial nozzle configuration (112 nozzles), water pressure (275kPa), and flowrate (152L/head washed), then developed a 3-D CAD model to identify regions of water use redundancy. The mechanical head wash was modified by reducing nozzle count (72), decreasing pressure (138kPa) and flowrate (78.4L/head). To objectively document visual cleansing, heads were photographed at three locations post decapitation: 1) prior to manual wash, 2) prior to entering, and 3) upon exit of the mechanical head wash. Changes in red saturation between stations 1 and 3 provided an objective measure of relative cleanliness. Prior to altering operating parameters, the post-wash red saturation was 5%; after modification this increased slightly to 7.5%. Water use was reduced by 48.4% without altering head cleanliness acceptance.
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Affiliation(s)
- C L Drennan
- School of Engineering, Computer Science, and Mathematics, West Texas A&M University, Canyon, United States
| | - R E DeOtte
- School of Engineering, Computer Science, and Mathematics, West Texas A&M University, Canyon, United States
| | - T E Lawrence
- Beef Carcass Research Center-Department of Agricultural Sciences, West Texas A&M University, Canyon, United States.
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Soulard CE, Acevedo W, Cohen WB, Yang Z, Stehman SV, Taylor JL. Harmonization of forest disturbance datasets of the conterminous USA from 1986 to 2011. Environ Monit Assess 2017; 189:170. [PMID: 28316025 DOI: 10.1007/s10661-017-5879-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 03/01/2017] [Indexed: 06/06/2023]
Abstract
Several spatial forest disturbance datasets exist for the conterminous USA. The major problem with forest disturbance mapping is that variability between map products leads to uncertainty regarding the actual rate of disturbance. In this article, harmonized maps were produced from multiple data sources (i.e., Global Forest Change, LANDFIRE Vegetation Disturbance, National Land Cover Database, Vegetation Change Tracker, and Web-Enabled Landsat Data). The harmonization process involved fitting common class ontologies and determining spatial congruency to produce forest disturbance maps for four time intervals (1986-1992, 1992-2001, 2001-2006, and 2006-2011). Pixels mapped as disturbed for two or more datasets were labeled as disturbed in the harmonized maps. The primary advantage gained by harmonization was improvement in commission error rates relative to the individual disturbance products. Disturbance omission errors were high for both harmonized and individual forest disturbance maps due to underlying limitations in mapping subtle disturbances with Landsat classification algorithms. To enhance the value of the harmonized disturbance products, we used fire perimeter maps to add information on the cause of disturbance.
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Affiliation(s)
- Christopher E Soulard
- Western Geographic Science Center, US Geological Survey, 345 Middlefield Road, MS-531, Menlo Park, CA, 94025, USA.
| | - William Acevedo
- EROS Data Center, US Geological Survey, Sioux Falls, SD, USA
| | - Warren B Cohen
- PNW Research Station, US Department of Agriculture Forest Service, Corvallis, OR, USA
| | - Zhiqiang Yang
- Department of Forest Ecosyste and Society, Oregon State University, Corvallis, OR, USA
| | - Stephen V Stehman
- Department of Forest and Natural Resources Management, State University of New York, Syracuse, NY, USA
| | - Janis L Taylor
- EROS Data Center, US Geological Survey, Sioux Falls, SD, USA
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Bosilevac JM, Wang R, Luedtke BE, Hinkley S, Wheeler TL, Koohmaraie M. Characterization of Enterohemorrhagic Escherichia coli on Veal Hides and Carcasses. J Food Prot 2017; 80:136-145. [PMID: 28221873 DOI: 10.4315/0362-028x.jfp-16-247] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Enterohemorrhagic Escherichia coli (EHEC) are Shiga toxin-producing E. coli associated with the most severe forms of foodborne illnesses. The U.S. Department of Agriculture, Food Safety and Inspection Service has identified a higher percentage of non-O157 EHEC compared with E. coli O157:H7-positive samples collected from veal trimmings than from products produced from other cattle slaughter classes. Therefore samples were collected from hides and preevisceration carcasses at five veal processors to assess E. coli O157:H7 and non-O157 EHEC contamination during bob veal and formula-fed veal dressing procedures. E. coli O157:H7 prevalence was measured by culture isolation and found to be on 20.3% of hides and 6.7% of carcasses. In contrast, a non-O157 EHEC molecular screening assay identified 90.3% of hides and 68.2% of carcasses as positive. Only carcass samples were taken forward to culture confirmation and 38.7% yielded one or more non-O157 EHEC isolates. The recovery of an EHEC varied by plant and sample collection date; values ranged from 2.1 to 87.8% among plants and from 4.2 to 64.2% within the same plant. Three plants were resampled after changes were made to sanitary dressing procedures. Between the two collection times at the three plants, hide-to-carcass transfer of E. coli O157:H7 and non-O157 EHEC was significantly reduced. All adulterant EHEC serogroups (O26, O45, O103, O111, O121, and O145) were isolated from veal carcasses as well as four other potentially pathogenic serogroups (O5, O84, O118, and O177). Bob veal was found to have a greater culture prevalence of E. coli O157:H7 and greater positive molecular screens for non-O157 EHEC than formula-fed veal (P < 0.05), but the percentage of culture-confirmed non-O157 EHEC was not different (P > 0.05) between the two types of calves. EHEC-O26, -O111, and -O121 were found more often in bob veal (P < 0.05), whereas EHEC-O103 was found more often in formula-fed veal (P < 0.05).
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Affiliation(s)
- Joseph M Bosilevac
- U.S. Department of Agriculture, Agricultural Research Service, U.S. Meat Animal Research Center, P.O. Box 166, State Spur 18D, Clay Center, Nebraska 68933
| | - Rong Wang
- U.S. Department of Agriculture, Agricultural Research Service, U.S. Meat Animal Research Center, P.O. Box 166, State Spur 18D, Clay Center, Nebraska 68933
| | - Brandon E Luedtke
- University of Nebraska-Kearney, 2401 11th Avenue, Kearney, Nebraska 68849
| | - Susanne Hinkley
- NeoSEEK Laboratory, Neogen Corp., 4131 North 48th Street, Lincoln, Nebraska 68504
| | - Tommy L Wheeler
- U.S. Department of Agriculture, Agricultural Research Service, U.S. Meat Animal Research Center, P.O. Box 166, State Spur 18D, Clay Center, Nebraska 68933
| | - Mohammad Koohmaraie
- IEH Laboratories and Consulting Group, 15300 Bothell Way N.E., Lake Forest Park, Washington 98155, USA
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Harris NL, Hagen SC, Saatchi SS, Pearson TRH, Woodall CW, Domke GM, Braswell BH, Walters BF, Brown S, Salas W, Fore A, Yu Y. Attribution of net carbon change by disturbance type across forest lands of the conterminous United States. Carbon Balance Manag 2016. [PMID: 27909460 DOI: 10.1186/s13021-0160068-5] [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] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
BACKGROUND Locating terrestrial sources and sinks of carbon (C) will be critical to developing strategies that contribute to the climate change mitigation goals of the Paris Agreement. Here we present spatially resolved estimates of net C change across United States (US) forest lands between 2006 and 2010 and attribute them to natural and anthropogenic processes. RESULTS Forests in the conterminous US sequestered -460 ± 48 Tg C year-1, while C losses from disturbance averaged 191 ± 10 Tg C year-1. Combining estimates of net C losses and gains results in net carbon change of -269 ± 49 Tg C year-1. New forests gained -8 ± 1 Tg C year-1, while deforestation resulted in losses of 6 ± 1 Tg C year-1. Forest land remaining forest land lost 185 ± 10 Tg C year-1 to various disturbances; these losses were compensated by net carbon gains of -452 ± 48 Tg C year-1. C loss in the southern US was highest (105 ± 6 Tg C year-1) with the highest fractional contributions from harvest (92%) and wind (5%). C loss in the western US (44 ± 3 Tg C year-1) was due predominantly to harvest (66%), fire (15%), and insect damage (13%). The northern US had the lowest C loss (41 ± 2 Tg C year-1) with the most significant proportional contributions from harvest (86%), insect damage (9%), and conversion (3%). Taken together, these disturbances reduced the estimated potential C sink of US forests by 42%. CONCLUSION The framework presented here allows for the integration of ground and space observations to more fully inform US forest C policy and monitoring efforts.
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Affiliation(s)
- N L Harris
- Ecosystem Services Unit, Winrock International, 2121 Crystal Drive Suite 500, Arlington, VA 22202 USA
- Forests Program, World Resources Institute, 10 G Street NE Suite 800, Washington, DC 20002 USA
| | - S C Hagen
- Applied Geosolutions, 55 Main Street Suite 125, Newmarket, NH 03857 USA
| | - S S Saatchi
- NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109 USA
| | - T R H Pearson
- Ecosystem Services Unit, Winrock International, 2121 Crystal Drive Suite 500, Arlington, VA 22202 USA
| | - C W Woodall
- USDA Forest Service, Northern Research Station, Saint Paul, MN 55108 USA
| | - G M Domke
- USDA Forest Service, Northern Research Station, Saint Paul, MN 55108 USA
| | - B H Braswell
- Applied Geosolutions, 55 Main Street Suite 125, Newmarket, NH 03857 USA
| | - B F Walters
- USDA Forest Service, Northern Research Station, Saint Paul, MN 55108 USA
| | - S Brown
- Ecosystem Services Unit, Winrock International, 2121 Crystal Drive Suite 500, Arlington, VA 22202 USA
| | - W Salas
- Applied Geosolutions, 55 Main Street Suite 125, Newmarket, NH 03857 USA
| | - A Fore
- NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109 USA
| | - Y Yu
- NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109 USA
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Pilli R, Grassi G, Kurz WA, Moris JV, Viñas RA. Modelling forest carbon stock changes as affected by harvest and natural disturbances. II. EU-level analysis. Carbon Balance Manag 2016; 11:20. [PMID: 27635153 PMCID: PMC5002049 DOI: 10.1186/s13021-016-0059-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Accepted: 08/12/2016] [Indexed: 05/24/2023]
Abstract
BACKGROUND Forests and the forest sector may play an important role in mitigating climate change. The Paris Agreement and the recent legislative proposal to include the land use sector in the EU 2030 climate targets reflect this expectation. However, greater confidence on estimates from national greenhouse gas inventories (GHGI) and more comprehensive analyses of mitigation options are needed to seize this mitigation potential. The aim of this paper is to provide a tool at EU level for verifying the EU GHGI and for simulating specific policy and forest management scenarios. Therefore, the Carbon Budget Model (CBM) was applied for an integrated assessment of the EU forest carbon (C) balance from 2000 to 2012, including: (i) estimates of the C stock and net CO2 emissions for forest management (FM), afforestation/reforestation (AR) and deforestation (D), covering carbon in both the forest and the harvest wood product (HWP) pools; (ii) an overall analysis of the C dynamics associated with harvest and natural disturbances (mainly storms and fires); (iii) a comparison of our estimates with the data reported in the EU GHGI. RESULTS Overall, the average annual FM sink (-365 Mt CO2 year-1) estimated by the CBM in the period 2000-2012 corresponds to about 7 % of total GHG emissions at the EU level for the same period (excluding land use, land-use change and forestry). The HWP pool sink (-44 Mt CO2 year-1) contributes an additional 1 %. Emissions from D (about 33 Mt CO2 year-1) are more than compensated by the sink in AR (about 43 Mt CO2 year-1 over the period). For FM, the estimates from the CBM were about 8 % lower than the EU GHGI, a value well within the typical uncertainty range of the EU forest sink estimates. For AR and D the match with the EU GHGI was nearly perfect (difference <±2 % in the period 2008-2012). Our analysis on harvest and natural disturbances shows that: (i) the impact of harvest is much greater than natural disturbances but, because of salvage logging (often very relevant), the impact of natural disturbances is often not easily distinguishable from the impact of harvest, and (ii) the impact of storms on the biomass C stock is 5-10 times greater than fires, but while storms cause only indirect emissions (i.e., a transfer of C from living biomass to dead organic matter), fires cause both direct and indirect emissions. CONCLUSIONS This study presents the application of a consistent methodological approach, based on an inventory-based model, adapted to the forest management conditions of EU countries. The approach captures, with satisfactory detail, the C sink reported in the EU GHGI and the country-specific variability due to harvest, natural disturbances and land-use changes. To our knowledge, this is the most comprehensive study of its kind at EU level, i.e., including all the forest pools, HWP and natural disturbances, and a comparison with the EU GHGI. The results provide the basis for possible future policy-relevant applications of this model, e.g., as a tool to support GHGIs (e.g., on accounting for natural disturbances) and to verify the EU GHGI, and for the simulation of specific scenarios at EU level.
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Affiliation(s)
- Roberto Pilli
- European Commission, Joint Research Centre, Directorate D – Sustainable Resources - Bio-Economy Unit, Via E. Fermi 2749, 21027 Ispra, VA Italy
| | - Giacomo Grassi
- European Commission, Joint Research Centre, Directorate D – Sustainable Resources - Bio-Economy Unit, Via E. Fermi 2749, 21027 Ispra, VA Italy
| | - Werner A. Kurz
- Natural Resources Canada, Canadian Forest Service, Victoria, BC V8Z 1M5 Canada
| | - Jose V. Moris
- Department of Agriculture, Forest and Food Sciences, University of Torino, Via Leonardo Da Vinci 44, 10095 Grugliasco, TO Italy
| | - Raúl Abad Viñas
- European Commission, Joint Research Centre, Directorate D – Sustainable Resources - Bio-Economy Unit, Via E. Fermi 2749, 21027 Ispra, VA Italy
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