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Sugiura Y, Makita Y. Tris(hydroxymethyl)aminomethane Substitution into Octacalcium Phosphate. CHEM LETT 2019. [DOI: 10.1246/cl.190553] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yuki Sugiura
- Health Research Institute, National Institute of Advanced Industrial Science and Technology, 2217-14 Hayashi-cho, Takamatsu, Kagawa 761-0395, Japan
| | - Yoji Makita
- Health Research Institute, National Institute of Advanced Industrial Science and Technology, 2217-14 Hayashi-cho, Takamatsu, Kagawa 761-0395, Japan
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Namula Z, Tanihara F, Wittayarat M, Hirata M, Nguyen NT, Hirano T, Le QA, Nii M, Otoi T. Effects of Tris (hydroxymethyl) aminomethane on the quality of frozen-thawed boar spermatozoa. Acta Vet Hung 2019; 67:106-114. [PMID: 30922097 DOI: 10.1556/004.2019.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Tris (hydroxymethyl) aminomethane (Tris) has been used as a pH regulator for buffering the pH of dilution extenders for boar semen, such as the Modena extender. The purpose of the present study was to assess the effects of Tris supplementation at different concentrations (0, 8, 24 and 72 μM) into the freezing extender on the quality and fertilising capacity of frozen-thawed boar spermatozoa. The results showed that the supplementation of 24 μM of Tris gave significantly higher percentages of sperm viability and plasma membrane integrity than those of the control group at any time point of assessment (0 h and 3 h post-thawing) (P < 0.05). However, there were no significant differences in the acrosome integrity parameter among the groups. Higher percentages of sperm motility were observed in the spermatozoa cryopreserved with 24 μM of Tris compared to the control groups when the samples were analysed 0 h after thawing (P < 0.05). However, an increase of the Tris concentration to 72 μM did not enhance the sperm motility parameters. The total numbers of fertilised oocytes and blastocysts obtained with spermatozoa frozen with 24 μM Tris were significantly higher than those of the control group without Tris (P < 0.05). In conclusion, the supplementation of 24 μM Tris into the freezing extender contributes to a better boar sperm quality and fertilising capacity after the process of freezing and thawing.
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Affiliation(s)
- Zhao Namula
- 1 College of Agricultural Science, Guangdong Ocean University, Guangdong, China
- 2 Faculty of Bioscience and Bioindustry, Tokushima University, Ishii, Myozai-gun, Tokushima 779-3233, Japan
| | - Fuminori Tanihara
- 1 College of Agricultural Science, Guangdong Ocean University, Guangdong, China
- 2 Faculty of Bioscience and Bioindustry, Tokushima University, Ishii, Myozai-gun, Tokushima 779-3233, Japan
| | - Manita Wittayarat
- 3 Faculty of Veterinary Science, Prince of Songkla University, Songkhla, Thailand
| | - Maki Hirata
- 1 College of Agricultural Science, Guangdong Ocean University, Guangdong, China
- 2 Faculty of Bioscience and Bioindustry, Tokushima University, Ishii, Myozai-gun, Tokushima 779-3233, Japan
| | - Nhien Thi Nguyen
- 2 Faculty of Bioscience and Bioindustry, Tokushima University, Ishii, Myozai-gun, Tokushima 779-3233, Japan
| | - Takayuki Hirano
- 2 Faculty of Bioscience and Bioindustry, Tokushima University, Ishii, Myozai-gun, Tokushima 779-3233, Japan
| | - Quynh Anh Le
- 2 Faculty of Bioscience and Bioindustry, Tokushima University, Ishii, Myozai-gun, Tokushima 779-3233, Japan
| | - Masahiro Nii
- 4 Tokushima Prefectural Livestock Research Institute, Tokushima, Japan
| | - Takeshige Otoi
- 1 College of Agricultural Science, Guangdong Ocean University, Guangdong, China
- 2 Faculty of Bioscience and Bioindustry, Tokushima University, Ishii, Myozai-gun, Tokushima 779-3233, Japan
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Kimmoun A, Novy E, Auchet T, Ducrocq N, Levy B. Hemodynamic consequences of severe lactic acidosis in shock states: from bench to bedside. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2015; 19:175. [PMID: 25887061 PMCID: PMC4391479 DOI: 10.1186/s13054-015-0896-7] [Citation(s) in RCA: 99] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Lactic acidosis is a very common biological issue for shock patients. Experimental data clearly demonstrate that metabolic acidosis, including lactic acidosis, participates in the reduction of cardiac contractility and in the vascular hyporesponsiveness to vasopressors through various mechanisms. However, the contributions of each mechanism responsible for these deleterious effects have not been fully determined and their respective consequences on organ failure are still poorly defined, particularly in humans. Despite some convincing experimental data, no clinical trial has established the level at which pH becomes deleterious for hemodynamics. Consequently, the essential treatment for lactic acidosis in shock patients is to correct the cause. It is unknown, however, whether symptomatic pH correction is beneficial in shock patients. The latest Surviving Sepsis Campaign guidelines recommend against the use of buffer therapy with pH ≥7.15 and issue no recommendation for pH levels <7.15. Furthermore, based on strong experimental and clinical evidence, sodium bicarbonate infusion alone is not recommended for restoring pH. Indeed, bicarbonate induces carbon dioxide generation and hypocalcemia, both cardiovascular depressant factors. This review addresses the principal hemodynamic consequences of shock-associated lactic acidosis. Despite the lack of formal evidence, this review also highlights the various adapted supportive therapy options that could be putatively added to causal treatment in attempting to reverse the hemodynamic consequences of shock-associated lactic acidosis.
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Affiliation(s)
- Antoine Kimmoun
- CHU Nancy, Service de Réanimation Médicale Brabois, Pole Cardiovasculaire et Réanimation Médicale, Hôpital de Brabois, Vandoeuvre-les-Nancy, 54511, France. .,Université de Lorraine, Nancy, 54000, France. .,INSERM U1116, Groupe Choc, Faculté de Médecine, Vandoeuvre-les-Nancy, 54511, France.
| | - Emmanuel Novy
- CHU Nancy, Service de Réanimation Médicale Brabois, Pole Cardiovasculaire et Réanimation Médicale, Hôpital de Brabois, Vandoeuvre-les-Nancy, 54511, France. .,Université de Lorraine, Nancy, 54000, France.
| | - Thomas Auchet
- CHU Nancy, Service de Réanimation Médicale Brabois, Pole Cardiovasculaire et Réanimation Médicale, Hôpital de Brabois, Vandoeuvre-les-Nancy, 54511, France.
| | - Nicolas Ducrocq
- CHU Nancy, Service de Réanimation Médicale Brabois, Pole Cardiovasculaire et Réanimation Médicale, Hôpital de Brabois, Vandoeuvre-les-Nancy, 54511, France.
| | - Bruno Levy
- CHU Nancy, Service de Réanimation Médicale Brabois, Pole Cardiovasculaire et Réanimation Médicale, Hôpital de Brabois, Vandoeuvre-les-Nancy, 54511, France. .,Université de Lorraine, Nancy, 54000, France. .,INSERM U1116, Groupe Choc, Faculté de Médecine, Vandoeuvre-les-Nancy, 54511, France.
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Stübs CC, Picker O, Schulz J, Obermiller K, Barthel F, Hahn AM, Bauer I, Beck C. Acute, short-term hypercapnia improves microvascular oxygenation of the colon in an animal model of sepsis. Microvasc Res 2013; 90:180-6. [DOI: 10.1016/j.mvr.2013.07.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2013] [Revised: 06/25/2013] [Accepted: 07/22/2013] [Indexed: 12/13/2022]
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