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Wang K, Zou F, Tao H, Gao W, Guo L, Cui B, Yuan C, Liu P, Lu L, Wu Z. Effects of different rapid cooling temperatures and annealing on functional properties of starch straws after thermoplastic extrusion. Carbohydr Polym 2023; 305:120534. [PMID: 36737187 DOI: 10.1016/j.carbpol.2022.120534] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [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: 10/14/2022] [Revised: 12/11/2022] [Accepted: 12/31/2022] [Indexed: 01/07/2023]
Abstract
To improve the performance of starch straws in rapidly cooling and annealing procedure of thermoplastic extrusion, control straw was prepared through slowly cooling at 25 °C, and starch straw was prepared through regulating different rapid cooling temperatures including 20 °C, 5 °C, -10 °C and -20 °C. The results indicated that control straw exhibited a homogeneous state, while starch straws treated by rapid cooling displayed like a wash-board structure. Compared to control straw, the ratio of the absorption peak intensity of 1047 and 1022 cm-1 increased from 1.050 to 1.455 as cooling temperatures decreased from 25 °C to -20 °C, indicating short-range order of the double helix structure significantly enhanced. The relative crystallinities of starch straws increased from 12.01 % to 16.58 %. The maximum bending force value (60.92 N) of starch straws cooled at -20 °C was significantly higher than that (46.14 N) of control straw. Conversely, the modulus of elasticity in bending values (4.21-16.43 N/cm) of rapid cooling-treated straws were significantly lower than that (48.42 N/cm) of control straw. Water absorption of rapid cooling-treated straws were lower than that of control straw, indicating the hydrophobicity property of starch straws significantly improved.
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Affiliation(s)
- Kun Wang
- State Key Laboratory of Biobased Material and Green Papermaking, School of Food Sciences and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China; Qilu University of Technology (Shandong Academy of Sciences), No. 3501, Daxue Rd., Changqing District, Jinan, Shandong Province 250353, China
| | - Feixue Zou
- State Key Laboratory of Biobased Material and Green Papermaking, School of Food Sciences and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China; Qilu University of Technology (Shandong Academy of Sciences), No. 3501, Daxue Rd., Changqing District, Jinan, Shandong Province 250353, China
| | - Haiteng Tao
- State Key Laboratory of Biobased Material and Green Papermaking, School of Food Sciences and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China; Qilu University of Technology (Shandong Academy of Sciences), No. 3501, Daxue Rd., Changqing District, Jinan, Shandong Province 250353, China
| | - Wei Gao
- State Key Laboratory of Biobased Material and Green Papermaking, School of Food Sciences and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China; Qilu University of Technology (Shandong Academy of Sciences), No. 3501, Daxue Rd., Changqing District, Jinan, Shandong Province 250353, China
| | - Li Guo
- State Key Laboratory of Biobased Material and Green Papermaking, School of Food Sciences and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China; Qilu University of Technology (Shandong Academy of Sciences), No. 3501, Daxue Rd., Changqing District, Jinan, Shandong Province 250353, China.
| | - Bo Cui
- State Key Laboratory of Biobased Material and Green Papermaking, School of Food Sciences and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China; Qilu University of Technology (Shandong Academy of Sciences), No. 3501, Daxue Rd., Changqing District, Jinan, Shandong Province 250353, China.
| | - Chao Yuan
- State Key Laboratory of Biobased Material and Green Papermaking, School of Food Sciences and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China; Qilu University of Technology (Shandong Academy of Sciences), No. 3501, Daxue Rd., Changqing District, Jinan, Shandong Province 250353, China
| | - Pengfei Liu
- State Key Laboratory of Biobased Material and Green Papermaking, School of Food Sciences and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China; Qilu University of Technology (Shandong Academy of Sciences), No. 3501, Daxue Rd., Changqing District, Jinan, Shandong Province 250353, China
| | - Lu Lu
- State Key Laboratory of Biobased Material and Green Papermaking, School of Food Sciences and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China; Qilu University of Technology (Shandong Academy of Sciences), No. 3501, Daxue Rd., Changqing District, Jinan, Shandong Province 250353, China
| | - Zhengzong Wu
- State Key Laboratory of Biobased Material and Green Papermaking, School of Food Sciences and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China; Qilu University of Technology (Shandong Academy of Sciences), No. 3501, Daxue Rd., Changqing District, Jinan, Shandong Province 250353, China
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Huang Z, Liu W, Liu B, He X, Guo H, Xue S, Yan X, Jaganathan GK. Cryopreservation of human T lymphocytes under fast cooling with controlled ice nucleation in cryoprotective solutions of low toxicity. Cryobiology 2021; 103:92-100. [PMID: 34508713 DOI: 10.1016/j.cryobiol.2021.09.002] [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: 05/03/2021] [Revised: 07/07/2021] [Accepted: 09/06/2021] [Indexed: 02/07/2023]
Abstract
Cryopreservation of human T lymphocytes has become an essential tool for some cell-based immunotherapy. However, the cryopreservation procedure of the cells has not been systematically studied. In particular, the key factors of ice seeding and cryoprotective agents (CPA) driving the success of cryopreservation remain unclear. We systematically investigated the key factors, including cooling rate, ice-seeding temperature, CPA concentration, and types of CPA, during cryopreservation of human T lymphocytes with controlled ice nucleation. We found that ice seeding at below -10 °C could enable human T lymphocytes to be cooled at 90 °C min-1 with high relative viability and recovery after rewarming, 94.9% and 90.2%, respectively, which are significantly higher than those without ice seeding (P < 0.001). After optimization, the concentration of dimethyl sulphoxide was as low as 2% (v/v) with relative viability and recovery of 95.4% and 100.8%, respectively, at the cooling rate of 90 °C min-1 after ice seeding at -16 °C. The cryopreservation procedure developed in this study could facilitate the understanding of the mechanism for ice seeding and cell injury and offer a promising cryopreservation method with a high cooling rate and extremely low toxicity for extensive clinical application of immunotherapy.
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Affiliation(s)
- Zhiyong Huang
- Institute of Biothermal and Technology, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Wei Liu
- Institute of Biothermal and Technology, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Baolin Liu
- Institute of Biothermal and Technology, University of Shanghai for Science and Technology, Shanghai, 200093, China.
| | - Xiaowen He
- Origincell Technology Group Co, Shanghai, 201203, China.
| | - Hao Guo
- Origincell Technology Group Co, Shanghai, 201203, China
| | - Suxia Xue
- Origincell Technology Group Co, Shanghai, 201203, China
| | - Xiaojuan Yan
- Origincell Technology Group Co, Shanghai, 201203, China
| | - Ganesh K Jaganathan
- Institute of Biothermal and Technology, University of Shanghai for Science and Technology, Shanghai, 200093, China
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Pietrowski D, Mladek R, Frank M, Erber J, Marschalek J, Schneeberger C. Analyses of human granulosa cell vitality by fluorescence activated cell sorting after rapid cooling. HUM FERTIL 2020; 25:478-486. [PMID: 32914641 DOI: 10.1080/14647273.2020.1817578] [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] [Indexed: 10/23/2022]
Abstract
In reproductive medicine, the technique of rapid cooling becomes increasingly important for the preservation of tissue and cells. In order to protect the cells, incubation in different cryopreservation solutions is essential. The speed of the cooling process also makes a pivotal contribution to the success of this method. Using Flourescence Activated Cell Sorting (FACS), we investigated the impact of an open rapid and a closed rapid cooling technique on the vitality of human granulosa cells. Furthermore, we examined effects of the different solutions used for rapid cooling and warming before and after rapid cooling. We found a significant lower proportion of vital cells after rapid cooling compared to untreated controls independently of the technique and the tube size. However, we did not find any significant differences between open and closed rapid cooling. In both, a lower proportion of vital granulosa cells were found after incubation in rapid cooling solution only compared to warming solution only. Our results lend support to the conclusion that the difference of cooling-speed between open and closed rapid cooling is, in our settings, not crucial for the success of the procedure and that cryoprotective agents in the rapid cooling solutions have a higher potential to cause severe cell damage than agents used for warming.
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Affiliation(s)
- Detlef Pietrowski
- Department of Obstetrics and Gynecology, Medical University Vienna, Vienna, Austria
| | - Raphaela Mladek
- FH Campus Wien, University of Applied Science, Vienna, Austria
| | - Maria Frank
- Department of Obstetrics and Gynecology, Medical University Vienna, Vienna, Austria
| | - Julia Erber
- Faculty of Life Science, University of Vienna, Vienna, Austria
| | - Julian Marschalek
- Department of Obstetrics and Gynecology, Medical University Vienna, Vienna, Austria
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Kpodo KR, Duttlinger AW, Radcliffe JS, Johnson JS. Time course determination of the effects of rapid and gradual cooling after acute hyperthermia on body temperature and intestinal integrity in pigs. J Therm Biol 2019; 87:102481. [PMID: 32001015 DOI: 10.1016/j.jtherbio.2019.102481] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [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: 10/23/2019] [Revised: 12/06/2019] [Accepted: 12/07/2019] [Indexed: 01/05/2023]
Abstract
Rapid cooling after acute hyperthermia may cause a sustained increase in body temperature and exacerbate intestinal damage in pigs. Therefore, the study objective was to evaluate the temporal effects of rapid and gradual cooling on body temperature response and intestinal integrity after acute hyperthermia in pigs. In three repetitions, 54 pigs [83.3 ± 6.7 kg initial body weight (BW)], balanced by sex were exposed to thermoneutral conditions for 6 h (TN; n = 6 pigs/repetition; 21.1 ± 2.0°C), or heat stress conditions (HS; 39.3 ± 1.6°C) for 3 h, followed by a 3 h recovery period of gradual cooling [HSGC; n = 6 pigs/repetition; gradual decrease from HS to TN conditions] or rapid cooling [HSRC; n = 6 pigs/repetition; rapid TN exposure and cold water (4.0°C) dousing every 30 min for 1.5 h]. Feed was withheld throughout the entire 6 h period, but water was provided ad libitum. Gastrointestinal (TGI) and rectal (TR) temperatures were recorded every 15 min during the HS and recovery periods. Six pigs per repetition (n = 2/treatment) were euthanized and jejunal and ileal samples were collected for histology immediately after (d 0), 2 d after, and 4 d after the recovery period. Data were analyzed using PROC MIXED in SAS 9.4. Overall, rapid cooling reduced TR and TGI (P < 0.01; 0.95°C and 0.74°C, respectively) compared to gradual cooling. Jejunal villus height was reduced overall (P = 0.02; 14.01%) in HSGC compared to HSRC and TN pigs. Jejunal villus height-to-crypt depth ratio was reduced overall (P = 0.05; 16.76%) in HSGC compared to TN pigs. Ileal villus height was reduced overall (P < 0.01; 16.95%) in HSGC compared to HSRC and TN pigs. No other intestinal morphology differences were detected. In summary, HSRC did not cause a sustained increase in body temperature and did not negatively impact biomarkers of intestinal integrity in pigs.
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Affiliation(s)
- Kouassi R Kpodo
- Department of Animal Sciences, Purdue University, West Lafayette, IN, 47907, USA; USDA-ARS Livestock Behavior Research Unit, West Lafayette, IN, 47907, USA
| | - Alan W Duttlinger
- Department of Animal Sciences, Purdue University, West Lafayette, IN, 47907, USA; USDA-ARS Livestock Behavior Research Unit, West Lafayette, IN, 47907, USA
| | - John S Radcliffe
- Department of Animal Sciences, Purdue University, West Lafayette, IN, 47907, USA
| | - Jay S Johnson
- USDA-ARS Livestock Behavior Research Unit, West Lafayette, IN, 47907, USA.
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Abstract
The purpose of the present study was to clarify the possibility of a rapid cryopreservation for cell line Paesun by cooling in the range of 30-40 °C/min to vapor phase of -120 ∼-140 °C before immersion into liquid phase of liquid nitrogen using 10% Me2SO. After thawing, these cells were examined with assaying viability by trypan blue exclusion staining and survival by cloning in monolayer; the percentages of cell and colony recovery obtained in rapid cooling had a tendency to be lower than that by slow cooling of 1 °C/min but there were no significant differences between them. In addition, post-thaw cells were examined by assaying proliferation and susceptibility to virus lines; there were no significant differences between before and after cryopreservation. In conclusion, these findings indicate that Paesun can be successfully cryopreserved by the rapid cooling rate of 30 °C-40 °C/min.
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Affiliation(s)
- Jong Kui Song
- Tissue Culture Laboratory, Virus Research Institute, Pyongyang Medical College, KIM IL SUNG University, Pyongyang, Democratic People's Republic of Korea.
| | - Yu Lan Hui
- Tissue Culture Laboratory, Virus Research Institute, Pyongyang Medical College, KIM IL SUNG University, Pyongyang, Democratic People's Republic of Korea
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Kaneko T, Kasaoka S, Nakahara T, Sawano H, Tahara Y, Hase M, Nishioka K, Shirai S, Hazui H, Arimoto H, Kashiwase K, Motomura T, Kuroda Y, Yasuga Y, Yonemoto N, Yokoyama H, Nagao K, Nonogi H. Effectiveness of lower target temperature therapeutic hypothermia in post-cardiac arrest syndrome patients with a resuscitation interval of ≤30 min. J Intensive Care 2015; 3:28. [PMID: 26097741 PMCID: PMC4474339 DOI: 10.1186/s40560-015-0095-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Accepted: 06/10/2015] [Indexed: 11/16/2022] Open
Abstract
Background Therapeutic hypothermia (TH) is a standard strategy to reduce brain damage in post-cardiac arrest syndrome (PCAS) patients. However, it is unknown whether the target temperature should be adjusted for PCAS patients in different states. Methods Participants in the J-PULSE-Hypo study database were divided into lower (32.0–33.5 °C; Group L) or moderate (34.0–35.0 °C; Group M) temperature groups. Primary outcome was a favourable neurological outcome (proportion of patients with a Glasgow-Pittsburgh Cerebral Performance Category [CPC] of 1–2 on day 30). We compared between the two groups and in subgroups of patients divided by age and resuscitation interval (interval from collapse to return of spontaneous circulation) by propensity score (PS) analysis. Results Overall, 467 participants were analysed. The proportions of patients with favourable neurological outcomes were as follows (Group L vs. Group M) (OR; Odds ratio): all patients, 64 % (n = 42) vs. 55 % ((n = 424) (PS; OR 1.381 (0.596–3.197)), P = 0.452) and resuscitation interval ≤ 30 min, 88 % (n = 24) vs. 64 % ((n = 281) (PS; OR 7.438 (1.769–31.272)), P = 0.007). Conclusions PCAS patients with a resuscitation interval of <30 min may be candidates for TH with a target temperature of <34 °C. Trial registration University Hospital Medical Information Network (UMIN) Clinical Trials Registry UMIN000001935; available at: https://upload.umin.ac.jp/cgi-open-bin/ctr/ctr.cgi?function=brows&action=brows&type=summary&recptno=R000002348&language=J.
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Affiliation(s)
- Tadashi Kaneko
- Emergency and General Medicine, Kumamoto University Hospital, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556 Japan
| | - Shunji Kasaoka
- Emergency and General Medicine, Kumamoto University Hospital, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556 Japan
| | - Takashi Nakahara
- Advanced Medical Emergency and Critical Care Center, Yamaguchi University Hospital, Ube, Japan
| | - Hirotaka Sawano
- Senri Critical Care Medical Center, Saiseikai Senri Hospital, Osaka, Japan
| | - Yoshio Tahara
- Division of Cardiovascular Care Unit, Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Mamoru Hase
- Department of Emergency Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Kenji Nishioka
- Department of Cardiology, Hiroshima City Hospital, Hiroshima, Japan
| | - Shinichi Shirai
- Division of Cardiology, Kokura Memorial Hospital, Kokura, Japan
| | - Hiroshi Hazui
- Emergency Medicine, Osaka Mishima Emergency and Critical Care Center, Osaka, Japan
| | - Hideki Arimoto
- Emergency and Critical Care Medical Center, Osaka City General Hospital, Osaka, Japan
| | | | - Tomokazu Motomura
- Department of Emergency and Critical Care Medicine, Chiba Hokusoh Hospital, Nippon Medical School, Inzai, Japan
| | - Yasuhiro Kuroda
- Emergency and Critical Care Center, Kagawa University Hospital, Kagawa, Japan
| | - Yuji Yasuga
- Department of Cardiology, Sumitomo Hospital, Osaka, Japan
| | - Naohiro Yonemoto
- Department of Psychopharmacology, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Hiroyuki Yokoyama
- Division of Cardiovascular Care Unit, Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Ken Nagao
- Department of Cardiology, Cardiopulmonary Resuscitation and Emergency Cardiovascular Care, Surugadai Nihon University Hospital, Tokyo, Japan
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Ahmad M, Nasrullah R, Ahmad N. Effect of cooling rate and equilibration time on pre-freeze and post-thaw survival of buck sperm. Cryobiology 2015; 70:233-8. [PMID: 25771348 DOI: 10.1016/j.cryobiol.2015.03.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [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: 10/21/2014] [Revised: 02/27/2015] [Accepted: 03/02/2015] [Indexed: 01/12/2023]
Abstract
Survival of buck sperm is affected due to duration and temperature of stages of refrigerated or frozen storage. This study investigated interactive effect of cooling rates (moderate; MC and rapid cooling; RC); and equilibration times (0, 2, 4 and 8h) on survival before freezing at 4°C and post-thaw quality of buck sperm. Semen was collected (three Beetal bucks; replicates=6), pooled and diluted with Tris-citrate extender. Pooled semen samples were subjected to either RC (-2.2°C/min) or MC (-0.3°C/min) from 37°C to 4°C in separate aliquots and further equilibrated at 4°C for 8h. Semen was frozen using standard procedure after completion of each equilibration period i.e. 0, 2, 4 and 8h. Semen was evaluated for motility, viability, plasma membrane integrity (PMI) and normal apical ridge (NAR) before freezing and after thawing. The survival time (time for survival above threshold limit i.e. 60%) at 4°C, of motility and PMI was observed 5 and 6h respectively in RC group while >8h in MC group. Rate of decline (slope) in motility and viability was higher (P<0.05) in RC overtime during equilibration at 4°C while PMI and NAR declined at equal rate in both cooling groups. Post-thaw motility and NAR were higher (P<0.05) in MC when equilibrated for 2-8h while viability and PMI of RC was observed equal to MC group. In conclusion, survival of buck sperm is higher when cooled with moderate rate. However, RC can maintain post-thaw sperm viability and PMI equal to MC when equilibrated for 2-8h. The methods should be explored to maintain motility and NAR during rapid cooling of buck sperm.
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Affiliation(s)
- Mushtaq Ahmad
- Department of Theriogenology, Faculty of Veterinary Science, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan.
| | - Rashad Nasrullah
- Department of Theriogenology, Faculty of Veterinary Science, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan
| | - Nasim Ahmad
- Department of Theriogenology, Faculty of Veterinary Science, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan
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