Purpose

The goal of this study is to understand the role of glucagon signal on glucose metabolism in individuals with and without bariatric surgery.  The study is involved with measuring glucose metabolism with glucagon infusion and glucagon receptor blockade. We use an investigational drug called REMD 477.  “Investigational” means that the has not yet been approved by the U.S. Food & Drug Administration (FDA). REMD-477 is a monoclonal antibody (an antibody made by cloning a unique white blood cell) that blocks the effect of glucagon. 

Category

IRB Number
STUDY00001597
NCT Number
NCT07212868
Sponsor
-



Study Contact

Mooney Mark-Johnson
210 450 8696
markjohnson@uthscsa.edu

Jessica Pena
penaj21@uthscsa.edu

Noelle Vinson
832-856-1520
vinsonn@uthscsa.edu

Principal Investigator
Marzieh Salehi

Andrea Hansis-Diarte
210-567-3208
hansisdiarte@uthscsa.edu

Mooney Mark-Johnson

markjohnson@uthscsa.edu



Eligibility

Eligible Ages
18-65
Eligible Genders
All
Accepts Healthy Volunteers
Yes

Inclusion Criteria

    1. Provision of signed and dated informed consent form from participant.
    2. Male or female, ≤65 and ≥18 years old
    3. Subjects with history of gastric bypass surgery and sleeve gastrectomy more than a year since surgery and non-surgical subjects without history of gastrointestinal (GI) surgery
    4. HbA1c ≤6%
    5. Willing to adhere to the study intervention regimen
    6. Female subjects of childbearing potential must have a negative pregnancy test at screening and all the study visits, and must not be lactating
    7. Females of childbearing potential who are sexually active with a nonsterilized male partner must use at least one highly effective method of contraception from screening and must agree to continue using such precautions during the study.It is strongly recommended for the male partner of a female subject to also use male condom plus spermicide throughout this period. Cessation of contraception after this point should be discussed with a responsible physician. Periodic abstinence, the rhythm method, and the withdrawal method are not acceptable methods of contraception.

Exclusion Criteria

    1. Diabetes
    2. Pregnancy/lactation
    3. Hgb <11
    4. Current GI obstruction or chronic diarrhea
    5. Subjects who are not within the age range of 18- 65 years.
    6. Evidence of active cardiorespiratory, hepatic, gastrointestinal or renal disease.
    7. History of allergy to the administered drugs.
    8. History of, or any existing condition that, in the opinion of the investigator, would interfere with evaluation of the investigational product, put the subject at risk, influence the subject's ability to participate or affect the interpretation of the results of the study and/or any subject unable or unwilling to follow study procedures.
    9. Substance dependence or history of alcohol abuse and/or excess alcohol intake
    10. Patients on ketogenic diet
    11. Prisoners or institutionalized individuals
    12. AST (SGOT) > 3 times upper limit of normal
    13. ALT (SGPT) > 3 times upper limit of normal
    14. History of clinical hypoglycemia documents based on Whipples' triad (ONLY for Aim 2)

Study Design

Arm Groups