Abstract
One-humped camels (Camelus dromedarius) exhibit remarkable adaptability to harsh desert environments through various physiological adaptations. This study aimed to assess variations and reference values of Heat-shock proteins (HSPs), physiological parameters, mineral concentrations, total antioxidant capacity (TAC), and malondialdehyde (MDA) in 90 healthy female one-humped camels from Zabol’s outskirts in Iran. The objective was to understand how these camels adapt to heat stress. Blood samples were collected from camels located at five geographical regions and analyzed using standard kits and methods. Reference intervals for heat-shock protein 30 (HSP30), heat-shock protein 40 (HSP40), heat-shock protein 70 (HSP70), and heat-shock protein 90 (HSP90) were determined using the reference value advisor (RVA). The study found significant differences among different regions for HSPs (P < 0.05), MDA (P = 0.021), and TAC (P = 0.042) levels, indicating variations in adaptation mechanisms. However, no notable differences were observed for other measured parameters between these regions. There were no significant differences observed in the evaluated parameters between the age categories of > 36 months and < 36 months. The positive correlation between HSPs and MDA levels (ranging from 0.754 to 0.884) suggests that the synthesis of HSPs is triggered as a response to oxidative stress caused by an imbalance between the production of reactive oxygen species (ROS) and the body’s antioxidant defenses. This oxidative stress, in turn, is a consequence of thermal stress. Additionally, the study reveals a negative association between TAC and HSP levels (ranging from − 0.660 to − 0.820), emphasizing the role of antioxidants in mitigating heat stress. The findings of this research offer compelling support for the critical role that HSPs play in protecting cells from heat-induced damage. Additionally, the presence of higher levels of HSPs in regions with more severe climate conditions serves as evidence of camels’ adaptation to heat stress. These findings emphasize the substantial impact of environmental factors on HSP production and further reinforce the crucial role of HSPs in bolstering the resilience of camels. Further research is needed to explore HSP expression and mechanisms to effectively manage and enhance camel resilience in extreme temperatures.
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Acknowledgements
The authors would like to acknowledge the Animal Health Management Department of Shiraz University for their valuable comments.
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The Vice Chancellor for Research at Shiraz University provided support for this work (Grant number: 97GCU1M235008).
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All authors contributed to the study’s conception and design. Arash Omidi, Saeed Nazifi, Mehdi Rasekh, and Nima Zare performed material preparation, data collection, and analysis. Arash Omidi wrote the first draft of the manuscript, and all authors commented on previous versions. All authors read and approved the final manuscript.
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The experiment was performed under the approval of the state Committee on Animal Ethics, Shiraz University, Shiraz, Iran (IACUC no: 4687/64). Also, the European Council Directive (86/609/EC) recommendations of November 24, 1986, regarding protecting animals used for experimental purposes, were considered.
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Omidi, A., Nazifi, S., Rasekh, M. et al. Heat-shock proteins, oxidative stress, and antioxidants in one-humped camels. Trop Anim Health Prod 56, 29 (2024). https://doi.org/10.1007/s11250-023-03876-x
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DOI: https://doi.org/10.1007/s11250-023-03876-x