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Study · Animal study (in vivo) · mouse · 2021

26 results

β-Nicotinamide Mononucleotide (NMN) Administrated by Intraperitoneal Injection Mediates Protection Against UVB-Induced Skin Damage in Mice.

Zhou X, Du HH, Long X, Pan Y, Hu J, Yu J, Zhao X

Journal of inflammation research7 Oct 2021Cited by 27 (Europe PMC)

Summary

The text of this summary is not shown here, because the article license does not allow reuse. Read it at the source (opens in a new tab)

Text rights: CC BY-NC. Results still quote short attributed sentences.

Results from this study26

26 results from studies that gave the peptide. No result from this study comes from people.

  1. 01AnimalAnimal study (in vivo)Efficacy outcome

    In UVB-exposed mice, NMN blocked photodamage.

    In plain wordsIn mice, NMN reduced skin damage compared with UVB exposure alone.

    Outcome
    DecreasePhotodamage
    Study

    mousen: not reported in source

    UVB-induced photodamage
    Comparator
    UVB exposure without NMN
    Outcome group
    Skin and hair · Skin and wound
    Studied dose
    Dose not stated · intraperitoneal injectionAs given in this study (mouse).

    Source sentences

    Summary
    The results showed that NMN treatment blocked UVB-induced photodamage in mice, maintaining normal structure and amount of collagen fibers, normal thickness of epidermis and dermis, reducing the production of mast cells, and maintaining complete organized skin structure.
    2 context sentences
    Summary · context
    This study explores the protective effect of NMN monomers given via intraperitoneal injection on UVB-induced photodamage.
    Summary · context
    We used a murine model of UVB-induced photodamage to evaluate the effect of an NMN monomer on photoaging skin by assessing skin and liver tissue sections, serum and skin oxidative stress levels, inflammatory markers, mRNA expression, and protein expression of skin- and liver-related genes.
  2. 02AnimalAnimal study (in vivo)Efficacy outcome

    In UVB-exposed mice, NMN maintained normal collagen fiber structure.

    In plain wordsIn mice, NMN preserved normal collagen fiber structure compared with UVB exposure alone.

    Outcome
    Not applicableCollagen fiber structure
    Study

    mousen: not reported in source

    UVB-induced photodamage
    Comparator
    UVB exposure without NMN
    Outcome group
    Skin and hair · Skin and wound
    Studied dose
    Dose not stated · intraperitoneal injectionAs given in this study (mouse).

    Source sentences

    Summary
    The results showed that NMN treatment blocked UVB-induced photodamage in mice, maintaining normal structure and amount of collagen fibers, normal thickness of epidermis and dermis, reducing the production of mast cells, and maintaining complete organized skin structure.
    2 context sentences
    Summary · context
    This study explores the protective effect of NMN monomers given via intraperitoneal injection on UVB-induced photodamage.
    Summary · context
    We used a murine model of UVB-induced photodamage to evaluate the effect of an NMN monomer on photoaging skin by assessing skin and liver tissue sections, serum and skin oxidative stress levels, inflammatory markers, mRNA expression, and protein expression of skin- and liver-related genes.
  3. 03AnimalAnimal study (in vivo)Efficacy outcome

    In UVB-exposed mice, NMN maintained a normal amount of collagen fibers.

    In plain wordsIn mice, NMN preserved normal collagen fiber amounts compared with UVB exposure alone.

    Outcome
    Not applicableCollagen fiber amount
    Study

    mousen: not reported in source

    UVB-induced photodamage
    Comparator
    UVB exposure without NMN
    Outcome group
    Skin and hair · Skin and wound
    Studied dose
    Dose not stated · intraperitoneal injectionAs given in this study (mouse).

    Source sentences

    Summary
    The results showed that NMN treatment blocked UVB-induced photodamage in mice, maintaining normal structure and amount of collagen fibers, normal thickness of epidermis and dermis, reducing the production of mast cells, and maintaining complete organized skin structure.
    2 context sentences
    Summary · context
    This study explores the protective effect of NMN monomers given via intraperitoneal injection on UVB-induced photodamage.
    Summary · context
    We used a murine model of UVB-induced photodamage to evaluate the effect of an NMN monomer on photoaging skin by assessing skin and liver tissue sections, serum and skin oxidative stress levels, inflammatory markers, mRNA expression, and protein expression of skin- and liver-related genes.
  4. 04AnimalAnimal study (in vivo)Efficacy outcome

    In UVB-exposed mice, NMN maintained normal epidermal thickness.

    In plain wordsIn mice, NMN preserved normal epidermal thickness compared with UVB exposure alone.

    Outcome
    Not applicableEpidermal thickness
    Study

    mousen: not reported in source

    UVB-induced photodamage
    Comparator
    UVB exposure without NMN
    Outcome group
    Skin and hair · Skin and wound
    Studied dose
    Dose not stated · intraperitoneal injectionAs given in this study (mouse).

    Source sentences

    Summary
    The results showed that NMN treatment blocked UVB-induced photodamage in mice, maintaining normal structure and amount of collagen fibers, normal thickness of epidermis and dermis, reducing the production of mast cells, and maintaining complete organized skin structure.
    2 context sentences
    Summary · context
    This study explores the protective effect of NMN monomers given via intraperitoneal injection on UVB-induced photodamage.
    Summary · context
    We used a murine model of UVB-induced photodamage to evaluate the effect of an NMN monomer on photoaging skin by assessing skin and liver tissue sections, serum and skin oxidative stress levels, inflammatory markers, mRNA expression, and protein expression of skin- and liver-related genes.
  5. 05AnimalAnimal study (in vivo)Efficacy outcome

    In UVB-exposed mice, NMN maintained normal dermal thickness.

    In plain wordsIn mice, NMN preserved normal dermal thickness compared with UVB exposure alone.

    Outcome
    Not applicableDermal thickness
    Study

    mousen: not reported in source

    UVB-induced photodamage
    Comparator
    UVB exposure without NMN
    Outcome group
    Skin and hair · Skin and wound
    Studied dose
    Dose not stated · intraperitoneal injectionAs given in this study (mouse).

    Source sentences

    Summary
    The results showed that NMN treatment blocked UVB-induced photodamage in mice, maintaining normal structure and amount of collagen fibers, normal thickness of epidermis and dermis, reducing the production of mast cells, and maintaining complete organized skin structure.
    2 context sentences
    Summary · context
    This study explores the protective effect of NMN monomers given via intraperitoneal injection on UVB-induced photodamage.
    Summary · context
    We used a murine model of UVB-induced photodamage to evaluate the effect of an NMN monomer on photoaging skin by assessing skin and liver tissue sections, serum and skin oxidative stress levels, inflammatory markers, mRNA expression, and protein expression of skin- and liver-related genes.
  6. 06AnimalAnimal study (in vivo)Efficacy outcome

    In UVB-exposed mice, NMN reduced mast cell production.

    In plain wordsIn mice, NMN reduced mast cell production compared with UVB exposure alone.

    Outcome
    DecreaseMast cell production
    Study

    mousen: not reported in source

    UVB-induced photodamage
    Comparator
    UVB exposure without NMN
    Outcome group
    Immune response · Skin and wound
    Studied dose
    Dose not stated · intraperitoneal injectionAs given in this study (mouse).

    Source sentences

    Summary
    The results showed that NMN treatment blocked UVB-induced photodamage in mice, maintaining normal structure and amount of collagen fibers, normal thickness of epidermis and dermis, reducing the production of mast cells, and maintaining complete organized skin structure.
    2 context sentences
    Summary · context
    This study explores the protective effect of NMN monomers given via intraperitoneal injection on UVB-induced photodamage.
    Summary · context
    We used a murine model of UVB-induced photodamage to evaluate the effect of an NMN monomer on photoaging skin by assessing skin and liver tissue sections, serum and skin oxidative stress levels, inflammatory markers, mRNA expression, and protein expression of skin- and liver-related genes.
  7. 07AnimalAnimal study (in vivo)Efficacy outcome

    In UVB-exposed mice, NMN maintained complete organized skin structure.

    In plain wordsIn mice, NMN preserved organized skin structure compared with UVB exposure alone.

    Outcome
    Not applicableOrganized skin structure
    Study

    mousen: not reported in source

    UVB-induced photodamage
    Comparator
    UVB exposure without NMN
    Outcome group
    Skin and hair · Skin and wound
    Studied dose
    Dose not stated · intraperitoneal injectionAs given in this study (mouse).

    Source sentences

    Summary
    The results showed that NMN treatment blocked UVB-induced photodamage in mice, maintaining normal structure and amount of collagen fibers, normal thickness of epidermis and dermis, reducing the production of mast cells, and maintaining complete organized skin structure.
    2 context sentences
    Summary · context
    This study explores the protective effect of NMN monomers given via intraperitoneal injection on UVB-induced photodamage.
    Summary · context
    We used a murine model of UVB-induced photodamage to evaluate the effect of an NMN monomer on photoaging skin by assessing skin and liver tissue sections, serum and skin oxidative stress levels, inflammatory markers, mRNA expression, and protein expression of skin- and liver-related genes.
  8. 08AnimalAnimal study (in vivo)Efficacy outcome

    In UVB-exposed mice, NMN maintained normal liver morphology.

    In plain wordsIn mice, NMN preserved normal liver structure compared with UVB exposure alone.

    Outcome
    Not applicableLiver morphology
    Study

    mousen: not reported in source

    UVB-induced photodamage
    Comparator
    UVB exposure without NMN
    Outcome group
    Liver fat and liver function · Liver
    Studied dose
    Dose not stated · intraperitoneal injectionAs given in this study (mouse).

    Source sentences

    Summary
    NMN intraperitoneal injection also maintained the normal morphology of the mouse liver after UVB exposure.
    2 context sentences
    Summary · context
    This study explores the protective effect of NMN monomers given via intraperitoneal injection on UVB-induced photodamage.
    Summary · context
    We used a murine model of UVB-induced photodamage to evaluate the effect of an NMN monomer on photoaging skin by assessing skin and liver tissue sections, serum and skin oxidative stress levels, inflammatory markers, mRNA expression, and protein expression of skin- and liver-related genes.
  9. 09AnimalAnimal study (in vivo)Efficacy outcome

    In UVB-exposed mice, NMN enhanced antioxidant enzyme activity in skin and liver.

    In plain wordsIn mice, NMN increased antioxidant enzyme activity in skin and liver compared with UVB exposure alone.

    Outcome
    IncreaseAntioxidant enzyme activity in skin and liver
    Study

    mousen: not reported in source

    UVB-induced photodamage
    Comparator
    UVB exposure without NMN
    Outcome group
    Receptor activity and mechanism · Whole body
    Studied dose
    Dose not stated · intraperitoneal injectionAs given in this study (mouse).

    Source sentences

    Summary
    Meanwhile, NMN intraperitoneal injection was found to increase antioxidant ability and regulate the proinflammatory response of the skin and liver to UVB irradiation by enhancing the activity of antioxidant enzymes, release of anti-inflammatory cytokines, reduction of hydrogen peroxide production (H…
    2 context sentences
    Summary · context
    This study explores the protective effect of NMN monomers given via intraperitoneal injection on UVB-induced photodamage.
    Summary · context
    We used a murine model of UVB-induced photodamage to evaluate the effect of an NMN monomer on photoaging skin by assessing skin and liver tissue sections, serum and skin oxidative stress levels, inflammatory markers, mRNA expression, and protein expression of skin- and liver-related genes.
  10. 10AnimalAnimal study (in vivo)Efficacy outcome

    In UVB-exposed mice, NMN enhanced anti-inflammatory cytokine release in skin and liver.

    In plain wordsIn mice, NMN increased anti-inflammatory cytokine release in skin and liver compared with UVB exposure alone.

    Outcome
    IncreaseAnti-inflammatory cytokine release in skin and liver
    Study

    mousen: not reported in source

    UVB-induced photodamage
    Comparator
    UVB exposure without NMN
    Outcome group
    Inflammation markers · Whole body
    Studied dose
    Dose not stated · intraperitoneal injectionAs given in this study (mouse).

    Source sentences

    Summary
    Meanwhile, NMN intraperitoneal injection was found to increase antioxidant ability and regulate the proinflammatory response of the skin and liver to UVB irradiation by enhancing the activity of antioxidant enzymes, release of anti-inflammatory cytokines, reduction of hydrogen peroxide production (H…
    2 context sentences
    Summary · context
    This study explores the protective effect of NMN monomers given via intraperitoneal injection on UVB-induced photodamage.
    Summary · context
    We used a murine model of UVB-induced photodamage to evaluate the effect of an NMN monomer on photoaging skin by assessing skin and liver tissue sections, serum and skin oxidative stress levels, inflammatory markers, mRNA expression, and protein expression of skin- and liver-related genes.
  11. 11AnimalAnimal study (in vivo)Efficacy outcome

    In UVB-exposed mice, NMN reduced hydrogen peroxide production in skin and liver.

    In plain wordsIn mice, NMN reduced hydrogen peroxide production in skin and liver compared with UVB exposure alone.

    Outcome
    DecreaseHydrogen peroxide production in skin and liver
    Study

    mousen: not reported in source

    UVB-induced photodamage
    Comparator
    UVB exposure without NMN
    Outcome group
    Receptor activity and mechanism · Whole body
    Studied dose
    Dose not stated · intraperitoneal injectionAs given in this study (mouse).

    Source sentences

    Summary
    Meanwhile, NMN intraperitoneal injection was found to increase antioxidant ability and regulate the proinflammatory response of the skin and liver to UVB irradiation by enhancing the activity of antioxidant enzymes, release of anti-inflammatory cytokines, reduction of hydrogen peroxide production (H…
    2 context sentences
    Summary · context
    This study explores the protective effect of NMN monomers given via intraperitoneal injection on UVB-induced photodamage.
    Summary · context
    We used a murine model of UVB-induced photodamage to evaluate the effect of an NMN monomer on photoaging skin by assessing skin and liver tissue sections, serum and skin oxidative stress levels, inflammatory markers, mRNA expression, and protein expression of skin- and liver-related genes.
  12. 12AnimalAnimal study (in vivo)Efficacy outcome

    In UVB-exposed mice, NMN decreased inflammatory cytokines in skin and liver.

    In plain wordsIn mice, NMN reduced inflammatory cytokines in skin and liver compared with UVB exposure alone.

    Outcome
    DecreaseInflammatory cytokines in skin and liver
    Study

    mousen: not reported in source

    UVB-induced photodamage
    Comparator
    UVB exposure without NMN
    Outcome group
    Inflammation markers · Whole body
    Studied dose
    Dose not stated · intraperitoneal injectionAs given in this study (mouse).

    Source sentences

    Summary
    Meanwhile, NMN intraperitoneal injection was found to increase antioxidant ability and regulate the proinflammatory response of the skin and liver to UVB irradiation by enhancing the activity of antioxidant enzymes, release of anti-inflammatory cytokines, reduction of hydrogen peroxide production (H…
    2 context sentences
    Summary · context
    This study explores the protective effect of NMN monomers given via intraperitoneal injection on UVB-induced photodamage.
    Summary · context
    We used a murine model of UVB-induced photodamage to evaluate the effect of an NMN monomer on photoaging skin by assessing skin and liver tissue sections, serum and skin oxidative stress levels, inflammatory markers, mRNA expression, and protein expression of skin- and liver-related genes.
  13. 13AnimalAnimal study (in vivo)Mechanism

    In UVB-exposed mice, NMN reduced oxidative stress in skin and liver.

    In plain wordsIn mice, NMN reduced oxidative stress in skin and liver compared with UVB exposure alone.

    Outcome
    DecreaseOxidative stress in skin and liver
    Study

    mousen: not reported in source

    UVB-induced photodamage
    Comparator
    UVB exposure without NMN
    Outcome group
    Receptor activity and mechanism · Whole body
    Studied dose
    Dose not stated · intraperitoneal injectionAs given in this study (mouse).

    Source sentences

    Summary
    Furthermore, RT-qPCR results indicated that NMN reduced oxidative stress of skin and liver by promoting the activation of the AMP-activated protein kinase (AMPK) signaling pathway and further increasing the expression of downstream antioxidant genes of AMPK.
    2 context sentences
    Summary · context
    This study explores the protective effect of NMN monomers given via intraperitoneal injection on UVB-induced photodamage.
    Summary · context
    We used a murine model of UVB-induced photodamage to evaluate the effect of an NMN monomer on photoaging skin by assessing skin and liver tissue sections, serum and skin oxidative stress levels, inflammatory markers, mRNA expression, and protein expression of skin- and liver-related genes.
  14. 14AnimalAnimal study (in vivo)Mechanism

    In UVB-exposed mice, NMN promoted AMPK signaling activation in skin and liver.

    In plain wordsIn mice, NMN increased AMPK signaling in skin and liver compared with UVB exposure alone.

    Outcome
    IncreaseAMPK pathway activation
    Study

    mousen: not reported in source

    UVB-induced photodamage
    Comparator
    UVB exposure without NMN
    Outcome group
    Receptor activity and mechanism · Whole body
    Studied dose
    Dose not stated · intraperitoneal injectionAs given in this study (mouse).

    Source sentences

    Summary
    Furthermore, RT-qPCR results indicated that NMN reduced oxidative stress of skin and liver by promoting the activation of the AMP-activated protein kinase (AMPK) signaling pathway and further increasing the expression of downstream antioxidant genes of AMPK.
    2 context sentences
    Summary · context
    This study explores the protective effect of NMN monomers given via intraperitoneal injection on UVB-induced photodamage.
    Summary · context
    We used a murine model of UVB-induced photodamage to evaluate the effect of an NMN monomer on photoaging skin by assessing skin and liver tissue sections, serum and skin oxidative stress levels, inflammatory markers, mRNA expression, and protein expression of skin- and liver-related genes.
  15. 15AnimalAnimal study (in vivo)Mechanism

    In UVB-exposed mice, NMN increased downstream antioxidant gene expression in the AMPK pathway.

    In plain wordsIn mice, NMN increased AMPK-related antioxidant gene expression compared with UVB exposure alone.

    Outcome
    IncreaseAMPK downstream antioxidant gene expression
    Study

    mousen: not reported in source

    UVB-induced photodamage
    Comparator
    UVB exposure without NMN
    Outcome group
    Receptor activity and mechanism · Whole body
    Studied dose
    Dose not stated · intraperitoneal injectionAs given in this study (mouse).

    Source sentences

    Summary
    Furthermore, RT-qPCR results indicated that NMN reduced oxidative stress of skin and liver by promoting the activation of the AMP-activated protein kinase (AMPK) signaling pathway and further increasing the expression of downstream antioxidant genes of AMPK.
    2 context sentences
    Summary · context
    This study explores the protective effect of NMN monomers given via intraperitoneal injection on UVB-induced photodamage.
    Summary · context
    We used a murine model of UVB-induced photodamage to evaluate the effect of an NMN monomer on photoaging skin by assessing skin and liver tissue sections, serum and skin oxidative stress levels, inflammatory markers, mRNA expression, and protein expression of skin- and liver-related genes.
  16. 16AnimalAnimal study (in vivo)Mechanism

    In UVB-exposed mice, NMN reduced IL-6 mRNA expression.

    In plain wordsIn mice, NMN reduced IL-6 gene expression compared with UVB exposure alone.

    Outcome
    DecreaseIL-6 mRNA expression
    Study

    mousen: not reported in source

    UVB-induced photodamage
    Comparator
    UVB exposure without NMN
    Outcome group
    Inflammation markers · Skin and wound
    Studied dose
    Dose not stated · intraperitoneal injectionAs given in this study (mouse).

    Source sentences

    Summary
    RT-qPCR results also revealed that NMN treatment could downregulate the mRNA expression of interleukin (IL)-6, interleukin (IL)-1β, and tumor necrosis factor (TNF)-α, and upregulate NF-kappa-B inhibitor-α (IκB-α) and interleukin (IL)-10 by inhibiting the activation of nuclear factor-κBp65 (NFκB-p65).
    2 context sentences
    Summary · context
    This study explores the protective effect of NMN monomers given via intraperitoneal injection on UVB-induced photodamage.
    Summary · context
    We used a murine model of UVB-induced photodamage to evaluate the effect of an NMN monomer on photoaging skin by assessing skin and liver tissue sections, serum and skin oxidative stress levels, inflammatory markers, mRNA expression, and protein expression of skin- and liver-related genes.
  17. 17AnimalAnimal study (in vivo)Mechanism

    In UVB-exposed mice, NMN reduced IL-1β mRNA expression.

    In plain wordsIn mice, NMN reduced IL-1β gene expression compared with UVB exposure alone.

    Outcome
    DecreaseIL-1β mRNA expression
    Study

    mousen: not reported in source

    UVB-induced photodamage
    Comparator
    UVB exposure without NMN
    Outcome group
    Inflammation markers · Skin and wound
    Studied dose
    Dose not stated · intraperitoneal injectionAs given in this study (mouse).

    Source sentences

    Summary
    RT-qPCR results also revealed that NMN treatment could downregulate the mRNA expression of interleukin (IL)-6, interleukin (IL)-1β, and tumor necrosis factor (TNF)-α, and upregulate NF-kappa-B inhibitor-α (IκB-α) and interleukin (IL)-10 by inhibiting the activation of nuclear factor-κBp65 (NFκB-p65).
    2 context sentences
    Summary · context
    This study explores the protective effect of NMN monomers given via intraperitoneal injection on UVB-induced photodamage.
    Summary · context
    We used a murine model of UVB-induced photodamage to evaluate the effect of an NMN monomer on photoaging skin by assessing skin and liver tissue sections, serum and skin oxidative stress levels, inflammatory markers, mRNA expression, and protein expression of skin- and liver-related genes.
  18. 18AnimalAnimal study (in vivo)Mechanism

    In UVB-exposed mice, NMN reduced TNF-α mRNA expression.

    In plain wordsIn mice, NMN reduced TNF-α gene expression compared with UVB exposure alone.

    Outcome
    DecreaseTNF-α mRNA expression
    Study

    mousen: not reported in source

    UVB-induced photodamage
    Comparator
    UVB exposure without NMN
    Outcome group
    Inflammation markers · Skin and wound
    Studied dose
    Dose not stated · intraperitoneal injectionAs given in this study (mouse).

    Source sentences

    Summary
    RT-qPCR results also revealed that NMN treatment could downregulate the mRNA expression of interleukin (IL)-6, interleukin (IL)-1β, and tumor necrosis factor (TNF)-α, and upregulate NF-kappa-B inhibitor-α (IκB-α) and interleukin (IL)-10 by inhibiting the activation of nuclear factor-κBp65 (NFκB-p65).
    2 context sentences
    Summary · context
    This study explores the protective effect of NMN monomers given via intraperitoneal injection on UVB-induced photodamage.
    Summary · context
    We used a murine model of UVB-induced photodamage to evaluate the effect of an NMN monomer on photoaging skin by assessing skin and liver tissue sections, serum and skin oxidative stress levels, inflammatory markers, mRNA expression, and protein expression of skin- and liver-related genes.
  19. 19AnimalAnimal study (in vivo)Mechanism

    In UVB-exposed mice, NMN increased IκB-α mRNA expression.

    In plain wordsIn mice, NMN increased IκB-α gene expression compared with UVB exposure alone.

    Outcome
    IncreaseIκB-α mRNA expression
    Study

    mousen: not reported in source

    UVB-induced photodamage
    Comparator
    UVB exposure without NMN
    Outcome group
    Inflammation markers · Skin and wound
    Studied dose
    Dose not stated · intraperitoneal injectionAs given in this study (mouse).

    Source sentences

    Summary
    RT-qPCR results also revealed that NMN treatment could downregulate the mRNA expression of interleukin (IL)-6, interleukin (IL)-1β, and tumor necrosis factor (TNF)-α, and upregulate NF-kappa-B inhibitor-α (IκB-α) and interleukin (IL)-10 by inhibiting the activation of nuclear factor-κBp65 (NFκB-p65).
    2 context sentences
    Summary · context
    This study explores the protective effect of NMN monomers given via intraperitoneal injection on UVB-induced photodamage.
    Summary · context
    We used a murine model of UVB-induced photodamage to evaluate the effect of an NMN monomer on photoaging skin by assessing skin and liver tissue sections, serum and skin oxidative stress levels, inflammatory markers, mRNA expression, and protein expression of skin- and liver-related genes.
  20. 20AnimalAnimal study (in vivo)Mechanism

    In UVB-exposed mice, NMN increased IL-10 mRNA expression.

    In plain wordsIn mice, NMN increased IL-10 gene expression compared with UVB exposure alone.

    Outcome
    IncreaseIL-10 mRNA expression
    Study

    mousen: not reported in source

    UVB-induced photodamage
    Comparator
    UVB exposure without NMN
    Outcome group
    Inflammation markers · Skin and wound
    Studied dose
    Dose not stated · intraperitoneal injectionAs given in this study (mouse).

    Source sentences

    Summary
    RT-qPCR results also revealed that NMN treatment could downregulate the mRNA expression of interleukin (IL)-6, interleukin (IL)-1β, and tumor necrosis factor (TNF)-α, and upregulate NF-kappa-B inhibitor-α (IκB-α) and interleukin (IL)-10 by inhibiting the activation of nuclear factor-κBp65 (NFκB-p65).
    2 context sentences
    Summary · context
    This study explores the protective effect of NMN monomers given via intraperitoneal injection on UVB-induced photodamage.
    Summary · context
    We used a murine model of UVB-induced photodamage to evaluate the effect of an NMN monomer on photoaging skin by assessing skin and liver tissue sections, serum and skin oxidative stress levels, inflammatory markers, mRNA expression, and protein expression of skin- and liver-related genes.
  21. 21AnimalAnimal study (in vivo)Mechanism

    In UVB-exposed mice, NMN inhibited NFκB-p65 activation.

    In plain wordsIn mice, NMN reduced NFκB-p65 activation compared with UVB exposure alone.

    Outcome
    DecreaseNFκB-p65 activation
    Study

    mousen: not reported in source

    UVB-induced photodamage
    Comparator
    UVB exposure without NMN
    Outcome group
    Receptor activity and mechanism · Skin and wound
    Studied dose
    Dose not stated · intraperitoneal injectionAs given in this study (mouse).

    Source sentences

    Summary
    RT-qPCR results also revealed that NMN treatment could downregulate the mRNA expression of interleukin (IL)-6, interleukin (IL)-1β, and tumor necrosis factor (TNF)-α, and upregulate NF-kappa-B inhibitor-α (IκB-α) and interleukin (IL)-10 by inhibiting the activation of nuclear factor-κBp65 (NFκB-p65).
    2 context sentences
    Summary · context
    This study explores the protective effect of NMN monomers given via intraperitoneal injection on UVB-induced photodamage.
    Summary · context
    We used a murine model of UVB-induced photodamage to evaluate the effect of an NMN monomer on photoaging skin by assessing skin and liver tissue sections, serum and skin oxidative stress levels, inflammatory markers, mRNA expression, and protein expression of skin- and liver-related genes.
  22. 22AnimalAnimal study (in vivo)Mechanism

    In UVB-exposed mice, NMN increased skin AMPK protein expression.

    In plain wordsIn mice, NMN increased skin AMPK protein expression compared with UVB exposure alone.

    Outcome
    IncreaseSkin AMPK protein expression
    Study

    mousen: not reported in source

    UVB-induced photodamage
    Comparator
    UVB exposure without NMN
    Outcome group
    Receptor activity and mechanism · Skin and wound
    Studied dose
    Dose not stated · intraperitoneal injectionAs given in this study (mouse).

    Source sentences

    Summary
    Finally, NMN upregulated AMPK, IκB-α, SOD1, and CAT in the skin and downregulated NF-κBp65 protein expression, which is in line with the RT-qPCR results.
    2 context sentences
    Summary · context
    This study explores the protective effect of NMN monomers given via intraperitoneal injection on UVB-induced photodamage.
    Summary · context
    We used a murine model of UVB-induced photodamage to evaluate the effect of an NMN monomer on photoaging skin by assessing skin and liver tissue sections, serum and skin oxidative stress levels, inflammatory markers, mRNA expression, and protein expression of skin- and liver-related genes.
  23. 23AnimalAnimal study (in vivo)Mechanism

    In UVB-exposed mice, NMN increased skin IκB-α protein expression.

    In plain wordsIn mice, NMN increased skin IκB-α protein expression compared with UVB exposure alone.

    Outcome
    IncreaseSkin IκB-α protein expression
    Study

    mousen: not reported in source

    UVB-induced photodamage
    Comparator
    UVB exposure without NMN
    Outcome group
    Receptor activity and mechanism · Skin and wound
    Studied dose
    Dose not stated · intraperitoneal injectionAs given in this study (mouse).

    Source sentences

    Summary
    Finally, NMN upregulated AMPK, IκB-α, SOD1, and CAT in the skin and downregulated NF-κBp65 protein expression, which is in line with the RT-qPCR results.
    2 context sentences
    Summary · context
    This study explores the protective effect of NMN monomers given via intraperitoneal injection on UVB-induced photodamage.
    Summary · context
    We used a murine model of UVB-induced photodamage to evaluate the effect of an NMN monomer on photoaging skin by assessing skin and liver tissue sections, serum and skin oxidative stress levels, inflammatory markers, mRNA expression, and protein expression of skin- and liver-related genes.
  24. 24AnimalAnimal study (in vivo)Mechanism

    In UVB-exposed mice, NMN increased skin SOD1 protein expression.

    In plain wordsIn mice, NMN increased skin SOD1 protein expression compared with UVB exposure alone.

    Outcome
    IncreaseSkin SOD1 protein expression
    Study

    mousen: not reported in source

    UVB-induced photodamage
    Comparator
    UVB exposure without NMN
    Outcome group
    Receptor activity and mechanism · Skin and wound
    Studied dose
    Dose not stated · intraperitoneal injectionAs given in this study (mouse).

    Source sentences

    Summary
    Finally, NMN upregulated AMPK, IκB-α, SOD1, and CAT in the skin and downregulated NF-κBp65 protein expression, which is in line with the RT-qPCR results.
    2 context sentences
    Summary · context
    This study explores the protective effect of NMN monomers given via intraperitoneal injection on UVB-induced photodamage.
    Summary · context
    We used a murine model of UVB-induced photodamage to evaluate the effect of an NMN monomer on photoaging skin by assessing skin and liver tissue sections, serum and skin oxidative stress levels, inflammatory markers, mRNA expression, and protein expression of skin- and liver-related genes.
  25. 25AnimalAnimal study (in vivo)Mechanism

    In UVB-exposed mice, NMN increased skin CAT protein expression.

    In plain wordsIn mice, NMN increased skin CAT protein expression compared with UVB exposure alone.

    Outcome
    IncreaseSkin CAT protein expression
    Study

    mousen: not reported in source

    UVB-induced photodamage
    Comparator
    UVB exposure without NMN
    Outcome group
    Receptor activity and mechanism · Skin and wound
    Studied dose
    Dose not stated · intraperitoneal injectionAs given in this study (mouse).

    Source sentences

    Summary
    Finally, NMN upregulated AMPK, IκB-α, SOD1, and CAT in the skin and downregulated NF-κBp65 protein expression, which is in line with the RT-qPCR results.
    2 context sentences
    Summary · context
    This study explores the protective effect of NMN monomers given via intraperitoneal injection on UVB-induced photodamage.
    Summary · context
    We used a murine model of UVB-induced photodamage to evaluate the effect of an NMN monomer on photoaging skin by assessing skin and liver tissue sections, serum and skin oxidative stress levels, inflammatory markers, mRNA expression, and protein expression of skin- and liver-related genes.
  26. 26AnimalAnimal study (in vivo)Mechanism

    In UVB-exposed mice, NMN decreased skin NF-κBp65 protein expression.

    In plain wordsIn mice, NMN reduced skin NF-κBp65 protein expression compared with UVB exposure alone.

    Outcome
    DecreaseSkin NF-κBp65 protein expression
    Study

    mousen: not reported in source

    UVB-induced photodamage
    Comparator
    UVB exposure without NMN
    Outcome group
    Receptor activity and mechanism · Skin and wound
    Studied dose
    Dose not stated · intraperitoneal injectionAs given in this study (mouse).

    Source sentences

    Summary
    Finally, NMN upregulated AMPK, IκB-α, SOD1, and CAT in the skin and downregulated NF-κBp65 protein expression, which is in line with the RT-qPCR results.
    2 context sentences
    Summary · context
    This study explores the protective effect of NMN monomers given via intraperitoneal injection on UVB-induced photodamage.
    Summary · context
    We used a murine model of UVB-induced photodamage to evaluate the effect of an NMN monomer on photoaging skin by assessing skin and liver tissue sections, serum and skin oxidative stress levels, inflammatory markers, mRNA expression, and protein expression of skin- and liver-related genes.

AI wrote and checked these results. AI can make mistakes, so check important results against the source.

Version history

PepBank keeps every version of the data on this study. Status changes from Retraction Watch, Europe PMC and Crossref are listed with their source.

  1. Version 2Current

    21 Oct 2026, 15:58 UTC

    Study results updated

  2. Version 1

    21 Oct 2026, 12:50 UTC

    First added · source update from Europe PMC

Subjects

Terms as the source lists them.

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