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<p>Aging has emerged as a prominent area of academic inquiry. Brain aging is a complex physiological process characterized by features such as enhanced apoptosis, oxidative stress, neuroinflammation, mitochondrial dysfunction, and impaired autophagy. Currently, effective preventative or therapeutic approaches for age-related neurodegenerative disorders remain elusive. Ectoine, a naturally occurring compatible solute, possesses diverse applications in biological engineering, cosmetics, medicine, and the food industry. Ectoine is reported to exhibit anti-inflammatory, antioxidant, and anti-apoptotic properties, making it a potential anti-aging agent. Consequently, the present study investigated the potential neuroprotective effects of Ectoine against <span>d</span>-galactose (D-gal)-induced brain aging. Accelerated aging was induced by subcutaneous injection of D-gal. Rats were subsequently divided into a control group, an aged group, and Ectoine-supplemented groups, receiving daily doses of 10, 20, and 40&#xa0;mg/kg, respectively. Our findings revealed that Ectoine effectively and dose-dependently protected against D-gal-induced brain aging by inhibiting oxidative stress, enhancing the antioxidant system, decreasing neuroinflammation, restoring autophagy and mitochondrial homeostasis, and inhibiting apoptosis. Furthermore, Ectoine significantly restored the expression of miR-124 and its target genes; however, this effect is correlative and warrants further mechanistic validation. Additionally, while Ectoine’s neuroprotective effects were observed at the tissue level, its cell-type specificity remains to be determined. These findings suggest that Ectoine may exert multi-pathway neuroprotective effects in brain aging. However, the current data are exploratory and warrant further validation to define causality and translational applicability.</p> Graphical Abstract <p></p>

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The Potential of Ectoine as a Brain Anti-Aging Agent in Rat Model of d-Galactose-Accelerated Aging May Be Mediated Through Crosstalk Between Redox/Mitochondrial Homeostasis/Autophagic/Apoptotic Pathways

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年12月8日

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  • Aisha H. A. Alsenousy,
  • Marwa B. Bakir,
  • Mohammed S. Zommara,
  • Hanan A. Edres,
  • Wael S. Darwish,
  • Rania M. H. M. Eid,
  • Maher A. Kamel

摘要

Aging has emerged as a prominent area of academic inquiry. Brain aging is a complex physiological process characterized by features such as enhanced apoptosis, oxidative stress, neuroinflammation, mitochondrial dysfunction, and impaired autophagy. Currently, effective preventative or therapeutic approaches for age-related neurodegenerative disorders remain elusive. Ectoine, a naturally occurring compatible solute, possesses diverse applications in biological engineering, cosmetics, medicine, and the food industry. Ectoine is reported to exhibit anti-inflammatory, antioxidant, and anti-apoptotic properties, making it a potential anti-aging agent. Consequently, the present study investigated the potential neuroprotective effects of Ectoine against d-galactose (D-gal)-induced brain aging. Accelerated aging was induced by subcutaneous injection of D-gal. Rats were subsequently divided into a control group, an aged group, and Ectoine-supplemented groups, receiving daily doses of 10, 20, and 40 mg/kg, respectively. Our findings revealed that Ectoine effectively and dose-dependently protected against D-gal-induced brain aging by inhibiting oxidative stress, enhancing the antioxidant system, decreasing neuroinflammation, restoring autophagy and mitochondrial homeostasis, and inhibiting apoptosis. Furthermore, Ectoine significantly restored the expression of miR-124 and its target genes; however, this effect is correlative and warrants further mechanistic validation. Additionally, while Ectoine’s neuroprotective effects were observed at the tissue level, its cell-type specificity remains to be determined. These findings suggest that Ectoine may exert multi-pathway neuroprotective effects in brain aging. However, the current data are exploratory and warrant further validation to define causality and translational applicability.

Graphical Abstract