37.2 How Hormones Work

37.2 How Hormones Work

  • An endocrinologist is a doctor who specializes in treating disorders of the hormones and metabolism.
    • The surgical treatment of diseases of the endocrine system is done by an endocrine surgeon.
    • Disorders of the pancreas, acromegaly, and pituitary dwarfism are some of the diseases that are managed by endocrinologists.
  • Endocrinologists use a lot of laboratory tests to diagnose and assess patients.
  • Many diseases are diagnosed using tests that affect the functioning of the endocrine system.
    • The effect of stimulating or suppressing an organ on the production of hormones can be determined with the help of blood samples.
    • To diagnose diabetes, patients need to fast for 12 to 24 hours.
    • They are given a drink that stimulates the pancreas to produce more blood sugar.
    • After the sugar drink is consumed, a blood sample is taken.
    • The bloodglucose level will be within a normal range if the pancreas is functioning properly.
    • The A1C test can be done during blood screening.
    • The A1C test looks at how well the blood sugar is being managed over a long period of time.
  • Once a disease has been diagnosed, endocrinologists can prescribe lifestyle changes and/or medications to treat the disease.
  • Exercise, weight loss, and a healthy diet can be used to manage some cases of diabetes.
    • If the disease can't be controlled with these methods, the endocrinologist may prescribe injections.
  • In addition to clinical practice, endocrinologists may also be involved in primary research and development activities.
    • Diabetes islet transplant research is investigating how healthy islet cells may be used.
    • Patients with islet transplants may be able to stop taking injections.
  • Even though hormones circulate throughout the body and come into contact with many different cell types, they only affect cells that possess the necessary receptors.
    • It is possible for a specific hormone to be found on many different cells or on a small number of specialized cells.
    • THe hormones act on many different tissue types, stimulating metabolism.
    • Cells can have many different types of hormones.
    • The number of cells that respond to a hormone is determined by the number of receptors that respond.
    • Increased or decreased cell sensitivity can be a result of the number of receptors that respond to a hormone changing over time.
  • The increase or decrease in normal body processes can be caused by binding.
  • They bind to transport proteins that keep them in the bloodstream once outside the cell.
    • At the target cell, the hormones are released from the carrier and diffuse across the lipid bilayer of the cells.
    • The steroid hormones pass through the cell's cell wall and into the nucleus.
    • The cell's genes are regulated by the cell signaling pathways.
  • The amount of correspondingProtein that is synthesized by altering gene expression is determined by this.
    • It can be used to change the structure of the cell or to make enzymes that make chemical reactions.
  • A heat shock protein is bound to an intracellular nuclear receptor.
    • The nucleus is translocated when the heat shock protein is broken down by the receptor.
    • The nucleus has a hormone-receptor complex that binding to a DNA sequence called a hormone response element.
    • Changes in cell function can be caused by the corresponding product.
  • The heat shock proteins are named because they help refold.
    • In response to increased temperature, heat shock proteins are activated by release from the NR/HSP complexample.
  • There are other hormones that are not steroid hormones that can be found in the nucleus.
    • The passage of thyroxine is dependent on the transporter protein.
  • D diffuses across the nuclear envelope.
    • The hormones bind to the nucleus in the cell.
    • Specific genes are stimulated by the hormone-receptor complex.
  • The hormones can't diffuse through the cells because they aren'tlipid-soluble.
    • Unlike steroid hormones, lipid insoluble hormones do not directly affect the target cell because they cannot enter the cell and act on DNA.
    • The specific effects of the hormone are carried out when the hormones are binding to a cell surface receptor.
    • The hormone that binding at the surface remains at the surface of the cell, while the product remains inside the cell.