Insulin action does not change during the menstrual cycle in normal women. 1987

E L Toth, and A Suthijumroon, and P M Crockford, and E A Ryan

Normal women have alterations in carbohydrate metabolism during pregnancy and when taking oral contraceptives, and clinical observations suggest that diabetic women need more insulin during menstruation. We, therefore, studied insulin action in normal women during the menstrual cycle in the follicular, luteal, and menstrual phases. Glucose tolerance was similar at all three times. Specific insulin receptor binding to monocytes did not change during the menstrual cycle. Euglycemic insulin clamp studies at four different insulin infusion rates (15, 40, 120, and 240 mU/M2 X min) showed no differences in insulin sensitivity or responsiveness throughout the menstrual cycle, and hepatic glucose output did not change. These studies suggest that if insulin action is impaired during menstruation in diabetic women it is because of factors that are not detected in normal women.

UI MeSH Term Description Entries
D007328 Insulin A 51-amino acid pancreatic hormone that plays a major role in the regulation of glucose metabolism, directly by suppressing endogenous glucose production (GLYCOGENOLYSIS; GLUCONEOGENESIS) and indirectly by suppressing GLUCAGON secretion and LIPOLYSIS. Native insulin is a globular protein comprised of a zinc-coordinated hexamer. Each insulin monomer containing two chains, A (21 residues) and B (30 residues), linked by two disulfide bonds. Insulin is used as a drug to control insulin-dependent diabetes mellitus (DIABETES MELLITUS, TYPE 1). Iletin,Insulin A Chain,Insulin B Chain,Insulin, Regular,Novolin,Sodium Insulin,Soluble Insulin,Chain, Insulin B,Insulin, Sodium,Insulin, Soluble,Regular Insulin
D007332 Insulin Infusion Systems Portable or implantable devices for infusion of insulin. Includes open-loop systems which may be patient-operated or controlled by a pre-set program and are designed for constant delivery of small quantities of insulin, increased during food ingestion, and closed-loop systems which deliver quantities of insulin automatically based on an electronic glucose sensor. Pancreas, Artificial Endocrine,Programmable Implantable Insulin Pump,beta Cell, Artificial,Implantable Programmable Insulin Pump,Insulin Pump, Programmable Implantable,Pump, Programmable Implantable Insulin,Artificial Endocrine Pancreas,Artificial beta Cell,Artificial beta Cells,Cell, Artificial beta,Cells, Artificial beta,Endocrine Pancreas, Artificial,Infusion System, Insulin,Infusion Systems, Insulin,Insulin Infusion System,System, Insulin Infusion,Systems, Insulin Infusion,beta Cells, Artificial
D008183 Luteal Phase The period in the MENSTRUAL CYCLE that follows OVULATION, characterized by the development of CORPUS LUTEUM, increase in PROGESTERONE production by the OVARY and secretion by the glandular epithelium of the ENDOMETRIUM. The luteal phase begins with ovulation and ends with the onset of MENSTRUATION. Menstrual Cycle, Luteal Phase,Menstrual Cycle, Secretory Phase,Menstrual Secretory Phase,Postovulatory Phase,Phase, Luteal,Phase, Postovulatory,Secretory Phase, Menstrual
D008597 Menstrual Cycle The period from onset of one menstrual bleeding (MENSTRUATION) to the next in an ovulating woman or female primate. The menstrual cycle is regulated by endocrine interactions of the HYPOTHALAMUS; the PITUITARY GLAND; the ovaries; and the genital tract. The menstrual cycle is divided by OVULATION into two phases. Based on the endocrine status of the OVARY, there is a FOLLICULAR PHASE and a LUTEAL PHASE. Based on the response in the ENDOMETRIUM, the menstrual cycle is divided into a proliferative and a secretory phase. Endometrial Cycle,Ovarian Cycle,Cycle, Endometrial,Cycle, Menstrual,Cycle, Ovarian,Cycles, Endometrial,Cycles, Menstrual,Cycles, Ovarian,Endometrial Cycles,Menstrual Cycles,Ovarian Cycles
D009000 Monocytes Large, phagocytic mononuclear leukocytes produced in the vertebrate BONE MARROW and released into the BLOOD; contain a large, oval or somewhat indented nucleus surrounded by voluminous cytoplasm and numerous organelles. Monocyte
D011972 Receptor, Insulin A cell surface receptor for INSULIN. It comprises a tetramer of two alpha and two beta subunits which are derived from cleavage of a single precursor protein. The receptor contains an intrinsic TYROSINE KINASE domain that is located within the beta subunit. Activation of the receptor by INSULIN results in numerous metabolic changes including increased uptake of GLUCOSE into the liver, muscle, and ADIPOSE TISSUE. Insulin Receptor,Insulin Receptor Protein-Tyrosine Kinase,Insulin Receptor alpha Subunit,Insulin Receptor beta Subunit,Insulin Receptor alpha Chain,Insulin Receptor beta Chain,Insulin-Dependent Tyrosine Protein Kinase,Receptors, Insulin,Insulin Receptor Protein Tyrosine Kinase,Insulin Receptors
D004305 Dose-Response Relationship, Drug The relationship between the dose of an administered drug and the response of the organism to the drug. Dose Response Relationship, Drug,Dose-Response Relationships, Drug,Drug Dose-Response Relationship,Drug Dose-Response Relationships,Relationship, Drug Dose-Response,Relationships, Drug Dose-Response
D005260 Female Females
D005498 Follicular Phase The period of the MENSTRUAL CYCLE representing follicular growth, increase in ovarian estrogen (ESTROGENS) production, and epithelial proliferation of the ENDOMETRIUM. Follicular phase begins with the onset of MENSTRUATION and ends with OVULATION. Menstrual Cycle, Follicular Phase,Menstrual Cycle, Proliferative Phase,Menstrual Proliferative Phase,Preovulatory Phase,Phase, Follicular,Phase, Menstrual Proliferative,Phase, Preovulatory,Proliferative Phase, Menstrual
D005951 Glucose Tolerance Test A test to determine the ability of an individual to maintain HOMEOSTASIS of BLOOD GLUCOSE. It includes measuring blood glucose levels in a fasting state, and at prescribed intervals before and after oral glucose intake (75 or 100 g) or intravenous infusion (0.5 g/kg). Intravenous Glucose Tolerance,Intravenous Glucose Tolerance Test,OGTT,Oral Glucose Tolerance,Oral Glucose Tolerance Test,Glucose Tolerance Tests,Glucose Tolerance, Oral

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