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Study · Animal study (in vivo) · mouse · 2012

20 results

[D-Leu-4]-OB3, a synthetic peptide amide with leptin-like activity, augments the effects of orally delivered exenatide and pramlintide acetate on energy balance and glycemic control in insulin-resistant male C57BLK/6-m db/db mice.

Leinung MC, Grasso P

Regulatory peptides5 Sept 2012Cited by 16 (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: Publisher copyright. Results still quote short attributed sentences.

Results from this study20

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

  1. 01AnimalAnimal study (in vivo)Efficacy outcome

    In diabetic mice, oral exenatide reduced body weight gain versus DDM alone.

    In plain wordsIn mice, oral exenatide reduced weight gain compared with DDM alone.

    Outcome
    DecreaseBody weight gain
    Study

    mousen: not reported in source

    insulin-resistant male C57BLK/6-m db/db mice
    Comparator
    DDM alone
    Outcome group
    Body weight · Metabolic and weight
    Studied dose
    Dose not stated · oral gavage · 14 daysAs given in this study (mouse).

    Measurements

    Weight gain
    13.9%
    exenatide
    Weight gain
    19.7%
    DDM alone

    Source sentences

    Summary
    Mice given DDM alone for 14 days were 19.7% heavier than they were at the beginning of the study, while oral delivery of exenatide or [D-Leu-4]-OB3 in DDM reduced body weight gain to only 13.9% and 11.5%, respectively, of initial body weight.
    1 context sentence
    Summary · context
    Exenatide or pramlintide acetate was reconstituted in dodecyl maltoside (DDM) in the absence or presence of [D-Leu-4]-OB3, and delivered orally by gavage to insulin-resistant male C57BLK/6-m db/db mice twice daily for 14 days.
  2. 02AnimalAnimal study (in vivo)Efficacy outcome

    In diabetic mice, pramlintide acetate reduced weight gain versus Intravail-treated controls.

    In plain wordsIn mice, pramlintide acetate reduced weight gain compared with Intravail-treated controls.

    Outcome
    DecreaseBody weight gain
    Study

    mousen: not reported in source

    insulin-resistant male C57BLK/6-m db/db mice
    Comparator
    Intravail-treated control
    Outcome group
    Body weight · Metabolic and weight
    Studied dose
    Dose not stated · oral gavage · 14 daysAs given in this study (mouse).

    Measurements

    Weight gain
    26.8%
    pramlintide acetate
    Weight gain
    38.2%
    control

    Source sentences

    Summary
    In another study, Intravail® treated control mice gained 38.2% of their initial body weight, while mice receiving pramlintide acetate or [D-Leu-4]-OB3 were only 26.8% and 25.4% heavier, respectively, at the end of the study,
    1 context sentence
    Summary · context
    Exenatide or pramlintide acetate was reconstituted in dodecyl maltoside (DDM) in the absence or presence of [D-Leu-4]-OB3, and delivered orally by gavage to insulin-resistant male C57BLK/6-m db/db mice twice daily for 14 days.
  3. 03AnimalAnimal study (in vivo)Efficacy outcome

    In diabetic mice, exenatide alone reduced food intake.

    In plain wordsIn mice, exenatide alone reduced food intake.

    Outcome
    DecreaseFood intake
    Study

    mousen: not reported in source

    insulin-resistant male C57BLK/6-m db/db mice
    Outcome group
    Appetite and food intake · Metabolic and weight
    Studied dose
    Dose not stated · oral gavage · 14 daysAs given in this study (mouse).

    Source sentences

    Summary
    Food intake was reduced by exenatide, pramlintide acetate, and [D-Leu-4]-OB3 alone, and co-delivery with [D-Leu-4]-OB3 did not induce a further decrease.
    1 context sentence
    Summary · context
    Exenatide or pramlintide acetate was reconstituted in dodecyl maltoside (DDM) in the absence or presence of [D-Leu-4]-OB3, and delivered orally by gavage to insulin-resistant male C57BLK/6-m db/db mice twice daily for 14 days.
  4. 04AnimalAnimal study (in vivo)Efficacy outcome

    In diabetic mice, pramlintide acetate alone reduced food intake.

    In plain wordsIn mice, pramlintide acetate alone reduced food intake.

    Outcome
    DecreaseFood intake
    Study

    mousen: not reported in source

    insulin-resistant male C57BLK/6-m db/db mice
    Outcome group
    Appetite and food intake · Metabolic and weight
    Studied dose
    Dose not stated · oral gavage · 14 daysAs given in this study (mouse).

    Source sentences

    Summary
    Food intake was reduced by exenatide, pramlintide acetate, and [D-Leu-4]-OB3 alone, and co-delivery with [D-Leu-4]-OB3 did not induce a further decrease.
    1 context sentence
    Summary · context
    Exenatide or pramlintide acetate was reconstituted in dodecyl maltoside (DDM) in the absence or presence of [D-Leu-4]-OB3, and delivered orally by gavage to insulin-resistant male C57BLK/6-m db/db mice twice daily for 14 days.
  5. 05AnimalAnimal study (in vivo)Efficacy outcome

    In diabetic mice, exenatide alone did not affect water intake.

    In plain wordsIn mice, exenatide alone did not affect water intake.

    Outcome
    No significant changeWater intake
    Study

    mousen: not reported in source

    insulin-resistant male C57BLK/6-m db/db mice
    Outcome group
    Appetite and food intake · Metabolic and weight
    Studied dose
    Dose not stated · oral gavage · 14 daysAs given in this study (mouse).

    Source sentences

    Summary
    Water intake was not affected by exenatide, pramlintide acetate, or [D-Leu-4]-OB3 alone, but co-delivery of exenatide or pramlintide acetate with [D-Leu-4]-OB3 resulted in a significant reduction in water intake.
    1 context sentence
    Summary · context
    Exenatide or pramlintide acetate was reconstituted in dodecyl maltoside (DDM) in the absence or presence of [D-Leu-4]-OB3, and delivered orally by gavage to insulin-resistant male C57BLK/6-m db/db mice twice daily for 14 days.
  6. 06AnimalAnimal study (in vivo)Efficacy outcome

    In diabetic mice, pramlintide acetate alone did not affect water intake.

    In plain wordsIn mice, pramlintide acetate alone did not affect water intake.

    Outcome
    No significant changeWater intake
    Study

    mousen: not reported in source

    insulin-resistant male C57BLK/6-m db/db mice
    Outcome group
    Appetite and food intake · Metabolic and weight
    Studied dose
    Dose not stated · oral gavage · 14 daysAs given in this study (mouse).

    Source sentences

    Summary
    Water intake was not affected by exenatide, pramlintide acetate, or [D-Leu-4]-OB3 alone, but co-delivery of exenatide or pramlintide acetate with [D-Leu-4]-OB3 resulted in a significant reduction in water intake.
    1 context sentence
    Summary · context
    Exenatide or pramlintide acetate was reconstituted in dodecyl maltoside (DDM) in the absence or presence of [D-Leu-4]-OB3, and delivered orally by gavage to insulin-resistant male C57BLK/6-m db/db mice twice daily for 14 days.
  7. 07AnimalAnimal study (in vivo)Efficacy outcome

    In diabetic mice, oral exenatide lowered blood glucose.

    In plain wordsIn mice, oral exenatide lowered blood glucose.

    Outcome
    DecreaseBlood glucose
    Study

    mousen: not reported in source

    insulin-resistant male C57BLK/6-m db/db mice
    Outcome group
    Glycemic control · Metabolic and weight
    Studied dose
    Dose not stated · oral gavage · 14 daysAs given in this study (mouse).

    Measurements

    Blood glucose reduction
    20.4%
    exenatide

    Source sentences

    Summary
    Oral delivery of exenatide or pramlintide acetate in DDM significantly lowered blood glucose levels by 20.4% and 30.2%, respectively.
    1 context sentence
    Summary · context
    Exenatide or pramlintide acetate was reconstituted in dodecyl maltoside (DDM) in the absence or presence of [D-Leu-4]-OB3, and delivered orally by gavage to insulin-resistant male C57BLK/6-m db/db mice twice daily for 14 days.
  8. 08AnimalAnimal study (in vivo)Efficacy outcome

    In diabetic mice, oral pramlintide acetate lowered blood glucose.

    In plain wordsIn mice, oral pramlintide acetate lowered blood glucose.

    Outcome
    DecreaseBlood glucose
    Study

    mousen: not reported in source

    insulin-resistant male C57BLK/6-m db/db mice
    Outcome group
    Glycemic control · Metabolic and weight
    Studied dose
    Dose not stated · oral gavage · 14 daysAs given in this study (mouse).

    Measurements

    Blood glucose reduction
    30.2%
    pramlintide acetate

    Source sentences

    Summary
    Oral delivery of exenatide or pramlintide acetate in DDM significantly lowered blood glucose levels by 20.4% and 30.2%, respectively.
    1 context sentence
    Summary · context
    Exenatide or pramlintide acetate was reconstituted in dodecyl maltoside (DDM) in the absence or presence of [D-Leu-4]-OB3, and delivered orally by gavage to insulin-resistant male C57BLK/6-m db/db mice twice daily for 14 days.
  9. 09AnimalAnimal study (in vivo)Efficacy outcome

    In diabetic mice, increasing exenatide concentrations increased serum insulin.

    In plain wordsIn mice, higher exenatide concentrations increased serum insulin.

    Outcome
    IncreaseSerum insulin concentration response
    Study

    mousen: not reported in source

    insulin-resistant male C57BLK/6-m db/db mice
    Outcome group
    Glycemic control · Metabolic and weight
    Studied dose
    Dose not stated · oral gavage · 14 daysAs given in this study (mouse).

    Source sentences

    Summary
    A concentration-dependent increase in serum insulin was observed in response to increasing concentrations of exenatide, and [D-Leu-4]-OB3 slightly reduced the insulin response to exenatide at all concentrations tested.
    1 context sentence
    Summary · context
    Exenatide or pramlintide acetate was reconstituted in dodecyl maltoside (DDM) in the absence or presence of [D-Leu-4]-OB3, and delivered orally by gavage to insulin-resistant male C57BLK/6-m db/db mice twice daily for 14 days.
  10. 10AnimalAnimal study (in vivo)Efficacy outcome

    In diabetic mice, increasing pramlintide acetate concentrations did not elevate serum insulin.

    In plain wordsIn mice, higher pramlintide acetate concentrations did not increase serum insulin.

    Outcome
    No significant changeSerum insulin concentration response
    Study

    mousen: not reported in source

    insulin-resistant male C57BLK/6-m db/db mice
    Outcome group
    Glycemic control · Metabolic and weight
    Studied dose
    Dose not stated · oral gavage · 14 daysAs given in this study (mouse).

    Source sentences

    Summary
    Increasing concentrations of pramlintide acetate alone did not elevate serum insulin, and when given in combination with [D-Leu-4]-OB3, serum insulin levels fell below those of DDM-treated control mice.
    1 context sentence
    Summary · context
    Exenatide or pramlintide acetate was reconstituted in dodecyl maltoside (DDM) in the absence or presence of [D-Leu-4]-OB3, and delivered orally by gavage to insulin-resistant male C57BLK/6-m db/db mice twice daily for 14 days.

Studies that did not test the peptide alone10

In this study, the peptide was a lab tool or a carrier, part of a mix, or the subject of a lab method. These results are not evidence about taking the peptide.

  1. 11AnimalNot a test of Exenatide (exendin-4) aloneAnimal study (in vivo)Efficacy outcome

    In diabetic mice, exenatide with [D-Leu-4]-OB3 reduced weight from baseline.

    In plain wordsIn mice, exenatide with [D-Leu-4]-OB3 reduced weight from baseline.

    Outcome
    DecreaseBody weight change with combination
    Study

    mousen: not reported in source

    insulin-resistant male C57BLK/6-m db/db mice
    Outcome group
    Body weight · Metabolic and weight

    Measurements

    Weight loss
    4.2%
    combination

    Source sentences

    Summary
    Mice receiving exenatide and [D-Leu-4]-OB3 were 4.2% lighter than they were at the beginning of the study.
    1 context sentence
    Summary · context
    Exenatide or pramlintide acetate was reconstituted in dodecyl maltoside (DDM) in the absence or presence of [D-Leu-4]-OB3, and delivered orally by gavage to insulin-resistant male C57BLK/6-m db/db mice twice daily for 14 days.

    In this study, Exenatide (exendin-4) was a lab tool or a carrier, part of a mix, or the subject of a lab method. This result is not evidence about taking Exenatide (exendin-4).

  2. 12AnimalNot a test of Pramlintide (Symlin) aloneAnimal study (in vivo)Efficacy outcome

    In diabetic mice, adding [D-Leu-4]-OB3 to pramlintide acetate did not further reduce weight gain.

    In plain wordsIn mice, pramlintide acetate with [D-Leu-4]-OB3 did not reduce weight gain further than pramlintide alone.

    Outcome
    No significant changeBody weight gain with combination
    Study

    mousen: not reported in source

    insulin-resistant male C57BLK/6-m db/db mice
    Comparator
    pramlintide acetate alone
    Outcome group
    Body weight · Metabolic and weight

    Source sentences

    Summary
    Co-administration of pramlintide acetate and [D-Leu-4]-OB3 did not further enhance the effect of pramlintide acetate on body weight gain.
    1 context sentence
    Summary · context
    Exenatide or pramlintide acetate was reconstituted in dodecyl maltoside (DDM) in the absence or presence of [D-Leu-4]-OB3, and delivered orally by gavage to insulin-resistant male C57BLK/6-m db/db mice twice daily for 14 days.

    In this study, Pramlintide (Symlin) was a lab tool or a carrier, part of a mix, or the subject of a lab method. This result is not evidence about taking Pramlintide (Symlin).

  3. 13AnimalNot a test of Exenatide (exendin-4) aloneAnimal study (in vivo)Efficacy outcome

    In diabetic mice, adding [D-Leu-4]-OB3 to exenatide did not further reduce food intake.

    In plain wordsIn mice, exenatide with [D-Leu-4]-OB3 did not reduce food intake further than exenatide alone.

    Outcome
    No significant changeFood intake with combination
    Study

    mousen: not reported in source

    insulin-resistant male C57BLK/6-m db/db mice
    Comparator
    exenatide alone
    Outcome group
    Appetite and food intake · Metabolic and weight

    Source sentences

    Summary
    Food intake was reduced by exenatide, pramlintide acetate, and [D-Leu-4]-OB3 alone, and co-delivery with [D-Leu-4]-OB3 did not induce a further decrease.
    1 context sentence
    Summary · context
    Exenatide or pramlintide acetate was reconstituted in dodecyl maltoside (DDM) in the absence or presence of [D-Leu-4]-OB3, and delivered orally by gavage to insulin-resistant male C57BLK/6-m db/db mice twice daily for 14 days.

    In this study, Exenatide (exendin-4) was a lab tool or a carrier, part of a mix, or the subject of a lab method. This result is not evidence about taking Exenatide (exendin-4).

  4. 14AnimalNot a test of Pramlintide (Symlin) aloneAnimal study (in vivo)Efficacy outcome

    In diabetic mice, adding [D-Leu-4]-OB3 to pramlintide acetate did not further reduce food intake.

    In plain wordsIn mice, pramlintide with [D-Leu-4]-OB3 did not reduce food intake further than pramlintide alone.

    Outcome
    No significant changeFood intake with combination
    Study

    mousen: not reported in source

    insulin-resistant male C57BLK/6-m db/db mice
    Comparator
    pramlintide acetate alone
    Outcome group
    Appetite and food intake · Metabolic and weight

    Source sentences

    Summary
    Food intake was reduced by exenatide, pramlintide acetate, and [D-Leu-4]-OB3 alone, and co-delivery with [D-Leu-4]-OB3 did not induce a further decrease.
    1 context sentence
    Summary · context
    Exenatide or pramlintide acetate was reconstituted in dodecyl maltoside (DDM) in the absence or presence of [D-Leu-4]-OB3, and delivered orally by gavage to insulin-resistant male C57BLK/6-m db/db mice twice daily for 14 days.

    In this study, Pramlintide (Symlin) was a lab tool or a carrier, part of a mix, or the subject of a lab method. This result is not evidence about taking Pramlintide (Symlin).

  5. 15AnimalNot a test of Exenatide (exendin-4) aloneAnimal study (in vivo)Efficacy outcome

    In diabetic mice, exenatide with [D-Leu-4]-OB3 reduced water intake.

    In plain wordsIn mice, exenatide with [D-Leu-4]-OB3 reduced water intake.

    Outcome
    DecreaseWater intake with combination
    Study

    mousen: not reported in source

    insulin-resistant male C57BLK/6-m db/db mice
    Outcome group
    Appetite and food intake · Metabolic and weight

    Source sentences

    Summary
    Water intake was not affected by exenatide, pramlintide acetate, or [D-Leu-4]-OB3 alone, but co-delivery of exenatide or pramlintide acetate with [D-Leu-4]-OB3 resulted in a significant reduction in water intake.
    1 context sentence
    Summary · context
    Exenatide or pramlintide acetate was reconstituted in dodecyl maltoside (DDM) in the absence or presence of [D-Leu-4]-OB3, and delivered orally by gavage to insulin-resistant male C57BLK/6-m db/db mice twice daily for 14 days.

    In this study, Exenatide (exendin-4) was a lab tool or a carrier, part of a mix, or the subject of a lab method. This result is not evidence about taking Exenatide (exendin-4).

  6. 16AnimalNot a test of Pramlintide (Symlin) aloneAnimal study (in vivo)Efficacy outcome

    In diabetic mice, pramlintide acetate with [D-Leu-4]-OB3 reduced water intake.

    In plain wordsIn mice, pramlintide acetate with [D-Leu-4]-OB3 reduced water intake.

    Outcome
    DecreaseWater intake with combination
    Study

    mousen: not reported in source

    insulin-resistant male C57BLK/6-m db/db mice
    Outcome group
    Appetite and food intake · Metabolic and weight

    Source sentences

    Summary
    Water intake was not affected by exenatide, pramlintide acetate, or [D-Leu-4]-OB3 alone, but co-delivery of exenatide or pramlintide acetate with [D-Leu-4]-OB3 resulted in a significant reduction in water intake.
    1 context sentence
    Summary · context
    Exenatide or pramlintide acetate was reconstituted in dodecyl maltoside (DDM) in the absence or presence of [D-Leu-4]-OB3, and delivered orally by gavage to insulin-resistant male C57BLK/6-m db/db mice twice daily for 14 days.

    In this study, Pramlintide (Symlin) was a lab tool or a carrier, part of a mix, or the subject of a lab method. This result is not evidence about taking Pramlintide (Symlin).

  7. 17AnimalNot a test of Exenatide (exendin-4) aloneAnimal study (in vivo)Efficacy outcome

    In diabetic mice, exenatide with [D-Leu-4]-OB3 further reduced blood glucose versus exenatide alone.

    In plain wordsIn mice, exenatide with [D-Leu-4]-OB3 reduced glucose further than exenatide alone.

    Outcome
    DecreaseBlood glucose with combination
    Study

    mousen: not reported in source

    insulin-resistant male C57BLK/6-m db/db mice
    Comparator
    exenatide alone
    Outcome group
    Glycemic control · Metabolic and weight

    Measurements

    Blood glucose reduction
    38.3%
    co-delivery

    Source sentences

    Summary
    Co-delivery with [D-Leu-4]-OB3 further reduced blood glucose by 38.3% and 50.5%, respectively.
    2 context sentences
    Summary · context
    Oral delivery of exenatide or pramlintide acetate in DDM significantly lowered blood glucose levels by 20.4% and 30.2%, respectively.
    Summary · context
    Exenatide or pramlintide acetate was reconstituted in dodecyl maltoside (DDM) in the absence or presence of [D-Leu-4]-OB3, and delivered orally by gavage to insulin-resistant male C57BLK/6-m db/db mice twice daily for 14 days.

    In this study, Exenatide (exendin-4) was a lab tool or a carrier, part of a mix, or the subject of a lab method. This result is not evidence about taking Exenatide (exendin-4).

  8. 18AnimalNot a test of Pramlintide (Symlin) aloneAnimal study (in vivo)Efficacy outcome

    In diabetic mice, pramlintide acetate with [D-Leu-4]-OB3 further reduced blood glucose versus pramlintide acetate alone.

    In plain wordsIn mice, pramlintide with [D-Leu-4]-OB3 reduced glucose further than pramlintide alone.

    Outcome
    DecreaseBlood glucose with combination
    Study

    mousen: not reported in source

    insulin-resistant male C57BLK/6-m db/db mice
    Comparator
    pramlintide acetate alone
    Outcome group
    Glycemic control · Metabolic and weight

    Measurements

    Blood glucose reduction
    50.5%
    co-delivery

    Source sentences

    Summary
    Co-delivery with [D-Leu-4]-OB3 further reduced blood glucose by 38.3% and 50.5%, respectively.
    2 context sentences
    Summary · context
    Oral delivery of exenatide or pramlintide acetate in DDM significantly lowered blood glucose levels by 20.4% and 30.2%, respectively.
    Summary · context
    Exenatide or pramlintide acetate was reconstituted in dodecyl maltoside (DDM) in the absence or presence of [D-Leu-4]-OB3, and delivered orally by gavage to insulin-resistant male C57BLK/6-m db/db mice twice daily for 14 days.

    In this study, Pramlintide (Symlin) was a lab tool or a carrier, part of a mix, or the subject of a lab method. This result is not evidence about taking Pramlintide (Symlin).

  9. 19AnimalNot a test of Exenatide (exendin-4) aloneAnimal study (in vivo)Efficacy outcome

    In diabetic mice, adding [D-Leu-4]-OB3 slightly reduced the insulin response to exenatide.

    In plain wordsIn mice, exenatide with [D-Leu-4]-OB3 produced a slightly lower insulin response than exenatide alone.

    Outcome
    DecreaseSerum insulin with combination
    Study

    mousen: not reported in source

    insulin-resistant male C57BLK/6-m db/db mice
    Comparator
    exenatide alone
    Outcome group
    Glycemic control · Metabolic and weight

    Source sentences

    Summary
    A concentration-dependent increase in serum insulin was observed in response to increasing concentrations of exenatide, and [D-Leu-4]-OB3 slightly reduced the insulin response to exenatide at all concentrations tested.
    1 context sentence
    Summary · context
    Exenatide or pramlintide acetate was reconstituted in dodecyl maltoside (DDM) in the absence or presence of [D-Leu-4]-OB3, and delivered orally by gavage to insulin-resistant male C57BLK/6-m db/db mice twice daily for 14 days.

    In this study, Exenatide (exendin-4) was a lab tool or a carrier, part of a mix, or the subject of a lab method. This result is not evidence about taking Exenatide (exendin-4).

  10. 20AnimalNot a test of Pramlintide (Symlin) aloneAnimal study (in vivo)Efficacy outcome

    In diabetic mice, pramlintide acetate with [D-Leu-4]-OB3 lowered insulin below DDM-treated control levels.

    In plain wordsIn mice, pramlintide with [D-Leu-4]-OB3 lowered insulin below DDM-treated control levels.

    Outcome
    DecreaseSerum insulin with combination
    Study

    mousen: not reported in source

    insulin-resistant male C57BLK/6-m db/db mice
    Comparator
    DDM-treated controls
    Outcome group
    Glycemic control · Metabolic and weight

    Source sentences

    Summary
    Increasing concentrations of pramlintide acetate alone did not elevate serum insulin, and when given in combination with [D-Leu-4]-OB3, serum insulin levels fell below those of DDM-treated control mice.
    1 context sentence
    Summary · context
    Exenatide or pramlintide acetate was reconstituted in dodecyl maltoside (DDM) in the absence or presence of [D-Leu-4]-OB3, and delivered orally by gavage to insulin-resistant male C57BLK/6-m db/db mice twice daily for 14 days.

    In this study, Pramlintide (Symlin) was a lab tool or a carrier, part of a mix, or the subject of a lab method. This result is not evidence about taking Pramlintide (Symlin).

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 3Current

    22 Oct 2026, 02:26 UTC

    Study results updated

  2. Version 2

    21 Oct 2026, 18:59 UTC

    Study data updated · source update from Europe PMC

  3. Version 1

    21 Oct 2026, 18:59 UTC

    First added · source update from Europe PMC

Subjects

Terms as the source lists them.

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