Thyroid Disorders & Treatments

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Questions and Answers

Which medication is primarily used for treating hypothyroidism?

Desiccated thyroid extract (correct)

Levothyroxine (correct)

Radioactive iodine

Propranolol

What is a significant side effect of desiccated thyroid extract?

Chest pain (correct)

Increased sweating

Weight gain

Hair loss

Why is it important to not switch between generic and brand-name versions of synthetic thyroid medications?

It can lead to increased metabolism.

It affects the drug's therapeutic index. (correct)

It increases the risk of side effects.

It may cause allergic reactions.

What treatment option involves damaging the thyroid cells to reduce hormone production?

Radioactive iodine treatment Signup and view all the answers

What is required to ensure the correct dosage for patients taking synthetic thyroid hormones?

Frequent blood tests Signup and view all the answers

Which of the following should be avoided within 4 hours of taking thyroid medication?

Calcium-rich foods Signup and view all the answers

Which synthetic hormone is considered FDA approved for hypothyroidism?

Liothyronine Signup and view all the answers

Which of the following is a common symptom experienced due to hypothyroidism treatment side effects?

Changes in menstrual periods Signup and view all the answers

Which of the following is NOT a common side effect of thyroid disorders?

Nausea Signup and view all the answers

What is the primary indication of hyperthyroidism based on TSH levels?

Low TSH, high T3 Signup and view all the answers

Which medication is typically the first line of treatment for hyperthyroidism?

Methimazole Signup and view all the answers

In which group is Propylthiouracil the preferred medication for treating hyperthyroidism?

Pregnant women Signup and view all the answers

What is the typical duration before noticing changes in symptoms after starting hyperthyroid medications?

1-2 months Signup and view all the answers

Which of the following best characterizes the immune response in women regarding thyroid disease?

More vigorous than in men Signup and view all the answers

What is a distinctive feature of anti-thyroid medications like thionamides?

They prevent the production of excess hormones Signup and view all the answers

Which of the following side effects is associated with hyperthyroidism?

Weight loss Signup and view all the answers

Which type of erectile dysfunction primarily results from problems relating to blood circulation?

Vascular erectile dysfunction Signup and view all the answers

What is the primary cause of hormonal erectile dysfunction?

Testosterone deficiency Signup and view all the answers

How is Graves' disease primarily diagnosed?

By physical examination and blood tests for thyroid antibodies Signup and view all the answers

Which condition is least likely to cause neurogenic erectile dysfunction?

Antidepressants Signup and view all the answers

What is one of the main actions of Propranolol when used to treat hyperthyroidism?

Decreasing heart rate Signup and view all the answers

Which psychological condition is commonly associated with psychogenic erectile dysfunction?

Depression Signup and view all the answers

Which of the following prescription drugs is NOT typically linked to erectile dysfunction?

Pain relievers Signup and view all the answers

What does the term 'anabolic' refer to in the context of anabolic steroids?

Enhancing tissue building, primarily muscle Signup and view all the answers

Which of the following conditions is NOT commonly treated with anabolic steroids?

Hypothyroidism Signup and view all the answers

Which of the following statements regarding the effects of anabolic steroids on athletes is TRUE?

They contribute to an increase in muscle strength. Signup and view all the answers

What is a primary androgen associated with anabolic steroids?

Testosterone Signup and view all the answers

Body wasting can occur due to various chronic conditions. Which of the following is NOT one of those conditions?

Congestive heart failure Signup and view all the answers

What impact does caffeine have on levothyroxine absorption?

Affects the drug by making it pass through the gut too quickly Signup and view all the answers

Which of the following hormones primarily regulates calcium and phosphate homeostasis?

Parathyroid hormone and vitamin D Signup and view all the answers

What is a common characteristic of osteoporosis?

It causes bones to become fragile and more likely to break Signup and view all the answers

Which statement about calcitonin is correct?

It decreases calcium levels in the blood by opposing parathyroid hormone Signup and view all the answers

Why is calcitonin nasal spray specifically used in postmenopausal women with osteoporosis?

It is used for patients who have been postmenopause for at least 5 years and do not want to take estrogens Signup and view all the answers

In cases of acute symptomatic hypocalcemia, which treatment is preferred?

IV calcium gluconate Signup and view all the answers

What underlying condition does rickets primarily affect?

Bone development in children Signup and view all the answers

Which of the following substances enhances the absorption of calcium from both bone and gut?

Parathyroid hormone Signup and view all the answers

How do active metabolites of vitamin D interact with phosphate homeostasis?

They stimulate both calcium and phosphate homeostasis Signup and view all the answers

What term refers to the tissue building aspect of anabolic-androgenic steroids?

Anabolic Signup and view all the answers

Which of the following chronic conditions is NOT commonly associated with body wasting?

Hypertension Signup and view all the answers

What is a notable effect of using anabolic steroids on athletes?

Improved muscle strength Signup and view all the answers

Which hormone is primarily recognized as the main androgen related to anabolic steroids?

Testosterone Signup and view all the answers

Under what conditions are anabolic steroids legally available?

With a prescription for certain medical conditions Signup and view all the answers

Which type of erectile dysfunction involves a lack of adequate blood flow to the penis?

Vascular erectile dysfunction Signup and view all the answers

Which of the following is associated with psychogenic erectile dysfunction?

Thoughts and feelings affecting performance Signup and view all the answers

What condition commonly leads to neurogenic erectile dysfunction?

Stroke or pelvic surgery Signup and view all the answers

Which prescription drug category is least likely to directly contribute to erectile dysfunction?

Pain relievers Signup and view all the answers

Which of these factors is NOT a potential cause of hormonal erectile dysfunction?

Nerve damage Signup and view all the answers

Which statement correctly describes the nature of levothyroxine as a medication for hypothyroidism?

It has a narrow therapeutic index. Signup and view all the answers

What is a critical reason why patients taking synthetic thyroid hormones need regular blood tests?

To adjust dosages based on individual metabolic rates. Signup and view all the answers

Which side effect is considered serious when using desiccated thyroid extract?

Irregular or fast heartbeat Signup and view all the answers

What is the primary mechanism of action by which propranolol reduces anxiety symptoms?

It blocks the effects of certain chemical messengers. Signup and view all the answers

Why is desiccated thyroid extract considered less preferred compared to levothyroxine in treating hypothyroidism?

It has a slower onset of maximal effects. Signup and view all the answers

What consideration should patients keep in mind regarding the timing of taking thyroid medications?

It should be taken away from calcium, iron, or magnesium supplements. Signup and view all the answers

Which of the following characteristics applies to both types of thyroid replacement medications mentioned?

Both require monitoring of blood hormone levels. Signup and view all the answers

Which of the following best describes the treatment options available for hyperthyroidism?

Combination of radioactive iodine and surgical removal. Signup and view all the answers

What is a primary action of metformin in the management of type 2 diabetes?

Lowers glucose production in the liver Signup and view all the answers

Which is a disadvantage of using an insulin pump?

Continuous flow of insulin may cause irritation Signup and view all the answers

What is a key characteristic of type 1 diabetes?

It is a lifelong condition impacting insulin production Signup and view all the answers

How often should different injection sites be used when administering insulin?

Use different areas within the site each time Signup and view all the answers

What common issue can arise from metformin toxicity?

Gastrointestinal symptoms like diarrhea Signup and view all the answers

Which step is NOT part of using an insulin pen?

Store the pen in direct sunlight Signup and view all the answers

Which site is suggested for the fastest absorption of injected insulin?

Abdomen Signup and view all the answers

What is a primary benefit of using an insulin pen?

Provides a convenient and accurate delivery method Signup and view all the answers

In type 1 diabetes, the body primarily attacks which of the following?

Insulin-producing cells in the pancreas Signup and view all the answers

What should be done just before using a pen that has been in the refrigerator?

Wait for it to warm to room temperature Signup and view all the answers

What effect does quitting smoking have over time regarding erectile dysfunction?

Improvement may occur after several months Signup and view all the answers

What is a characteristic of salmon calcitonin compared to human calcitonin?

It is twenty times more active than human calcitonin. Signup and view all the answers

What risk is associated with estrogen therapy after menopause?

Increased risk of endometrial cancer. Signup and view all the answers

What is the primary action of oral medications like sildenafil in treating erectile dysfunction?

Inhibit the enzyme that destroys cGMP Signup and view all the answers

Which statement about insulin delivery methods is incorrect?

Oral medications can replace the need for injections Signup and view all the answers

For what condition is parathyroid hormone prescribed?

Hypoparathyroidism Signup and view all the answers

What is the primary use of cinacalcet?

To manage hyperparathyroidism. Signup and view all the answers

Which hormone is triggered by clomiphene citrate during the ovulation process?

Luteinizing hormone (LH) Signup and view all the answers

What is a significant side effect of androgen medications in women?

Development of male-like changes. Signup and view all the answers

What function do estrogens primarily serve in male and female reproductive systems?

Managing symptoms of estrogen deficiency. Signup and view all the answers

Which of the following statements is true regarding androgens?

They are essential for male sexual and reproductive function. Signup and view all the answers

Which statement about estrogen receptor modulators is correct?

They can prevent the growth of hormone receptor-positive breast cancer. Signup and view all the answers

What is the primary action of human chorionic gonadotropin in fertility treatments?

Triggering the release of eggs from ovaries. Signup and view all the answers

What is the consequence of high androgen doses in women?

Development of male-like physical traits. Signup and view all the answers

What is the role of progestins in reproductive health?

They help in the management of menstrual disorders and fertility. Signup and view all the answers

What effect does parathyroid hormone have on calcium levels?

It decreases calcium excretion in urine. Signup and view all the answers

When are fertility drugs such as clomiphene citrate most often prescribed?

For women who do not ovulate regularly. Signup and view all the answers

What are the main hormones produced by the thyroid gland?

Triiodothyronine (T3), thyroxine (T4), and calcitonin. Signup and view all the answers

How do endocrine glands differ from exocrine glands?

Endocrine glands secrete hormones directly into the bloodstream, while exocrine glands release their products via ducts to an epithelial surface. Signup and view all the answers

What condition occurs when the thyroid gland produces excessive hormones?

Hyperthyroidism. Signup and view all the answers

What is hypothyroidism, and what does it result from?

Hypothyroidism is a condition where the thyroid gland does not produce enough hormones, resulting in symptoms like fatigue and weight gain. Signup and view all the answers

Describe the role of calcitonin in the human body.

Calcitonin helps regulate calcium levels by decreasing calcium release from bones and increasing calcium excretion in the kidneys. Signup and view all the answers

What are some side effects of hyperthyroidism?

Common side effects include weight loss, increased heart rate, and anxiety. Signup and view all the answers

In what way does the thyroid impact metabolism?

The thyroid hormones T3 and T4 significantly influence the basal metabolic rate, affecting how quickly the body uses energy. Signup and view all the answers

What physiological functions are regulated by thyroid hormones?

Thyroid hormones regulate body temperature, heart rate, metabolism, and energy levels. Signup and view all the answers

What blood test results indicate hypothyroidism?

A high TSH and low T3 and/or T4. Signup and view all the answers

Name two common side effects of hyperthyroidism.

Weight loss and nervousness. Signup and view all the answers

Which autoimmune disorder is commonly associated with thyroid disease?

Graves' disease. Signup and view all the answers

What is the primary function of thionamides in treating hyperthyroidism?

To stop the thyroid from producing excess hormones. Signup and view all the answers

Why is methimazole preferred over propylthiouracil for most patients?

It works quickly and has fewer side effects. Signup and view all the answers

What typical change in symptoms can be expected after starting hyperthyroid medications?

Noticing changes in symptoms usually takes 1-2 months. Signup and view all the answers

Identify a common factor that makes women more susceptible to thyroid disorders.

A more vigorous immune response compared to men. Signup and view all the answers

What is the main action of propranolol when used in the context of hyperthyroidism?

It decreases the heart rate and helps the heart pump blood efficiently. Signup and view all the answers

What does a blood test for thyroid antibodies help diagnose?

Autoimmune thyroid disorders. Signup and view all the answers

List one reason why thyroid disorders are considered lifelong conditions.

They often require effective medications to manage hormone levels continuously. Signup and view all the answers

What does the term 'androgenic' imply in relation to anabolic steroids?

It refers to the group of hormones called androgens, which includes testosterone. Signup and view all the answers

Describe one medical condition that may be treated using anabolic steroids.

Delayed puberty is one condition that can be treated with anabolic steroids. Signup and view all the answers

What effect does caffeine from coffee have on thyroid medication like levothyroxine?

Caffeine can affect the absorption of levothyroxine and cause it to pass through the gut too quickly. Signup and view all the answers

How do anabolic steroids affect muscle strength and body mass?

They commonly lead to an increase in muscle strength and body mass. Signup and view all the answers

Identify the two primary regulators of calcium and phosphate homeostasis.

Parathyroid hormone and vitamin D are the primary regulators. Signup and view all the answers

What role does calcitonin play in the regulation of calcium levels?

Calcitonin helps regulate calcium levels by opposing the action of parathyroid hormone. Signup and view all the answers

What is body wasting, and which chronic condition is it commonly associated with?

Body wasting is unwanted weight loss and is commonly associated with HIV. Signup and view all the answers

How does parathyroid hormone contribute to maintaining serum calcium levels?

Parathyroid hormone increases calcium reabsorption from bone and affects the gut and kidneys. Signup and view all the answers

What role do genetics play in an athlete's performance when using anabolic steroids?

Genetics, along with factors like age and training, primarily determine athletic ability. Signup and view all the answers

Explain why calcitonin nasal spray is recommended for postmenopausal women with osteoporosis.

Calcitonin nasal spray is used for treating bone loss in postmenopausal women who cannot or do not want to take estrogen products. Signup and view all the answers

What role do psychological conditions play in psychogenic erectile dysfunction?

Psychogenic erectile dysfunction is influenced by psychological conditions that affect feelings, thoughts, and behaviors. Signup and view all the answers

How does vascular erectile dysfunction differ from neurogenic erectile dysfunction?

Vascular erectile dysfunction is primarily caused by issues related to blood vessels affecting blood flow, while neurogenic erectile dysfunction results from nerve-related problems impacting signal transmission from the brain. Signup and view all the answers

What condition is characterized by soft and weak bones in children, and what is its name?

Rickets is characterized by soft and weak bones in children. Signup and view all the answers

Identify and explain one major side effect of antihypertensive medications concerning erectile dysfunction.

A major side effect of antihypertensive medications is erectile dysfunction, as these drugs can hinder blood flow required for achieving and maintaining an erection. Signup and view all the answers

What are the common treatments for chronic hypocalcemia?

Chronic hypocalcemia is typically treated with oral calcium and vitamin D supplements. Signup and view all the answers

Describe the relationship between active metabolites of vitamin D and bone formation.

Active metabolites of vitamin D increase calcium absorption and provide adequate minerals necessary for normal bone formation. Signup and view all the answers

What physiological factor is commonly associated with hormonal erectile dysfunction?

Hormonal erectile dysfunction is commonly associated with testosterone deficiency, affecting the ability to achieve erections. Signup and view all the answers

Discuss the implications of having a neurologic condition like a stroke on erectile function.

A neurologic condition like a stroke can lead to neurogenic erectile dysfunction by impairing the nerve signals required for an erection. Signup and view all the answers

What is the primary indication for using calcitonin in medical treatment?

Calcitonin is commonly used in the treatment of bone mineral disorders like osteoporosis. Signup and view all the answers

What happens to urinary excretion of calcium when parathyroid hormone and vitamin D metabolites are active?

Both parathyroid hormone and vitamin D metabolites reduce urinary excretion of calcium. Signup and view all the answers

Study Notes

Thyroid Disorders

Side effects of thyroid disorders include: weight loss, weight gain, nervousness, irregular pulse, irritability, sleep problems, vision problems, muscle weakness, feeling hot all the time, depression, forgetfulness, fatigue, and dry skin.
Thyroid disorders are diagnosed using physical examination, ultrasounds, and blood tests for T4, T3, and TSH levels.
Hypothyroidism is characterized by high TSH, low T3, and/or low T4.
Hyperthyroidism is characterized by low TSH, high T3, and/or high T4.
Thyroid antibodies levels help diagnose autoimmune thyroid disorders like Graves' disease.
Thyroid disease is more common in women due to their more vigorous immune response and higher susceptibility to autoimmune diseases.
Thyroid disease is usually a lifelong condition requiring medication to restore proper thyroid hormone levels.

Treating Hyperthyroidism

Anti-thyroid medications, known as thionamides, are the most common treatment for hyperthyroidism.
They prevent the thyroid from producing excess hormones.
Methimazole is often the first-line treatment due to its rapid effectiveness and fewer side effects.
Propylthiouracil is preferred during pregnancy for a reduced risk of birth defects.
Propranolol addresses extreme hyperthyroidism symptoms by decreasing heart rate and facilitating blood flow.
Radioactive iodine treatment damages thyroid cells to reduce hormone production.
Surgical removal of the thyroid gland is another treatment option.

Treating Hypothyroidism

Oral synthetic thyroid hormones, like levothyroxine, liothyronine, or liotrix, replace missing thyroid hormones.
Regular blood tests are necessary to adjust dosage as it varies among patients.
Two types of thyroid replacement medications are: synthetic medicine and desiccated thyroid extract.
Desiccated thyroid extract is a dried and powdered form of the thyroid gland.
Synthetic thyroid medications, like Levothyroxine, are FDA-approved and have a narrow therapeutic index, meaning small variations in blood levels can significantly affect effectiveness or toxicity.
Avoid switching between generic and brand-name versions of synthetic thyroid.

Taking Thyroid Medications

Carefully study the medication label.
Take thyroid medication separately from other medications, ideally within 4 hours of taking it.
Avoid taking multivitamins or supplements containing calcium, iron, or magnesium as they interfere with absorption.
Avoid consuming caffeine as it can affect the absorption of Levothyroxine.

Bone Mineral Homeostasis

Calcium and phosphorus are essential for bone strength and cell function.
Parathyroid hormone and vitamin D are the primary regulators of calcium and phosphate homeostasis.
Calcitonin, glucocorticoids, and estrogens play secondary roles and are used to treat bone mineral disorders like rickets and osteoporosis.
Vitamin D metabolites enhance calcium absorption from bone and gut, promoting calcium and phosphate homeostasis.
Parathyroid hormone is involved in calcium reabsorption from bone, regulating blood calcium levels.
Both parathyroid hormone and vitamin D metabolites reduce urinary calcium excretion.
Rickets is a condition affecting bone development in children, leading to weakened bones, poor growth, and bone deformities.
Osteoporosis is a condition weakening bones, making them fragile and prone to fractures.

Medications for Calcium Regulation

Calcitonin, a hormone produced by the thyroid gland, regulates blood calcium and phosphate levels.
Intravenous calcium gluconate is preferred for treating acute symptomatic hypocalcemia.
Oral calcium and vitamin D supplements are used for chronic hypocalcemia.
Calcitonin nasal spray is used in conjunction with calcium and vitamin D to treat bone loss in postmenopausal women.
Calcitonin-salmon spray is a specific type used for postmenopausal women who cannot or choose not to take estrogen products.

Androgens and Anabolic Steroids

Anabolic steroids, manufactured forms of testosterone, are also known as anabolic-androgenic steroids (AAS).
"Anabolic" refers to tissue building, primarily muscle.
"Androgenic" refers to androgens, a group of sex hormones, with testosterone being the main one.
Anabolic steroids are legally available only with a prescription to treat conditions like delayed puberty and body-wasting in patients with AIDS.
Body-wasting is unwanted weight loss, a symptom of various chronic conditions such as HIV, chronic renal failure, multiple sclerosis, and cancer.

Anabolic Steroids and Athletes

Anabolic steroids can increase muscle strength and build muscle tissue, thus increasing body mass.
However, steroids do not improve agility or skill.
Athletic ability is influenced by factors such as genetics, age, sex diet, body size, and training intensity.

Penile Erectile Dysfunction

Penile erectile dysfunction affects the ability to achieve and maintain an erection firm enough for intercourse due to the inability of the corpus cavernosum to fill with blood.
Types of erectile dysfunction include: psychogenic (psychological), vascular (blood vessel-related), hormonal (testosterone deficiency), and neurogenic (nerve-related).
Psychogenic erectile dysfunction involves psychological conditions affecting feelings, thoughts, and behavior.
Vascular erectile dysfunction is the most common type and arises from problems with blood vessels, preventing proper blood flow to the penis.
Neurogenic erectile dysfunction is caused by neurological conditions like stroke or trauma, preventing signals from the brain to reach the penis.
Erectile dysfunction can be a side effect of numerous prescription drugs like antihistamines, anti-anxiety medications, antidepressants, Parkinson's disease drugs, chemotherapy drugs, blood pressure medications, and antiarrhythmics.

Propranolol

Propranolol reduces anxiety by blocking chemical messengers
It results in a fasting heart rate, sweating or shaking

Hyperthyroid Treatment Options

Radioactive iodine treatment damages thyroid cells, preventing it from producing thyroid hormones
Surgical removal of the thyroid gland is another treatment option

Hypothyroid Medication

Hypothyroidism is treated with oral synthetic thyroid hormones
Levothyroxine, liothyronine, or liotrix are commonly used
Regular blood tests are required to adjust dosage based on individual needs

Types of Thyroid Replacement Medications

Synthetic medications are FDA approved and include levothyroxine, liothyronine, or liotrix
Desiccated thyroid extract is a dried and powdered thyroid gland used in medication

Synthetic Thyroid Medication

Synthetic thyroid medications have a narrow therapeutic index, meaning small variations in blood levels can significantly affect efficacy and toxicity
Switching between generic and brand-name versions of synthetic thyroid medication is not recommended

Desiccated Thyroid Extract

Used to treat hypothyroidism
May require up to three weeks for full effects
Less preferred than levothyroxine
It can cause serious side effects such as:
- Changes in menstrual periods
- Changes in appetite
- Diarrhea
- Headache
- Irregular or fast heartbeat
- Chest pain
- Fever

Taking Thyroid Medications

Always study the medication label carefully
Take thyroid medication separately from other medications, at least four hours apart
Avoid taking multivitamins or supplements containing calcium, iron, or magnesium as they can interfere with absorption

Salmon Calcitonin

This hormone is also found in salmon
Synthetic salmon calcitonin is commonly used therapeutically
It is twenty times more active than human calcitonin with a longer half-life
It prevents bone breakdown and increases bone density

Estrogen Therapy

Estrogen therapy can improve menopausal symptoms but may increase the risk of endometrial cancer
It is generally considered safe for women without a uterus, such as those who have undergone a hysterectomy

Parathyroid Hormone Prescription

Used in conjunction with calcium and vitamin D to control hypocalcemia (low calcium levels)
Primarily prescribed for patients with hypoparathyroidism
Parathyroid glands in the neck do not produce enough parathyroid hormone in this condition

Cinacalcet Medication

Commonly used for treating hyperparathyroidism, especially when surgery is not an option
It decreases parathyroid hormone production and lowers blood calcium levels
Also used to treat high calcium levels in patients with primary hyperparathyroidism who cannot undergo surgery

Reproductive Pharmacology

This field encompasses drugs used to manage pathologies affecting the male and female genitourinary tracts

Medications for the Female Reproductive System

Estrogens are used to treat symptoms of estrogen deficiency, such as amenorrhea and menopause
Progestins help regulate the menstrual cycle, treat amenorrhea, prevent anemia and excessive menstrual blood loss, as well as reduce the risk of uterine cancer

Estrogen Receptor Modulators

Used in the treatment of osteoporosis, postmenopausal symptoms, and breast cancer.
They block estrogen receptors in hormone receptor-positive breast cancer, preventing estrogen's growth-stimulating effects and leading to an antiproliferative effect.

Clomiphene Citrate (Clomid) for Female Infertility

Stimulates ovulation by triggering egg production in the ovaries
Increases the release of follicle-stimulating hormone (FSH) and luteinizing hormone (LH) from the pituitary gland
Side effects are generally mild and include bloating, blurred vision, nausea, and headache.

Injected Hormones for Female Infertility

Human Chorionic Gonadotropin (hCG) is prescribed when clomiphene is ineffective or for assisted reproductive technology.
hCG stimulates follicle growth and is injected during the early menstrual cycle.
Follicle-stimulating hormone (FSH) triggers egg growth in the ovaries.

Medications for the Male Reproductive System

Androgens are male sex hormones, with testosterone being the primary one.
They are crucial for male sexual and reproductive function and the development of secondary sexual characteristics.

Use of Androgen Medication

Replace testosterone when the body cannot produce enough on its own
Stimulate puberty in boys with delayed onset
Treat certain types of breast cancer in females

Common Androgens for the Male Reproductive System

Danazol
Fluoxymesterone
Testosterone
Methyltestosterone

Side Effects of Androgen Medication

Hypertension (high blood pressure)
Fluid and nitrogen retention
Erythropoiesis (red blood cell production)
Bone-density changes

Androgens - Anabolic Steroids

Anabolic steroids are manufactured versions of testosterone, also known as anabolic-androgenic steroids (AAS)
"Anabolic" refers to tissue building, primarily muscle
"Androgenic" refers to a group of sex hormones called androgens
Legally available only with a prescription to treat conditions like delayed puberty and body wasting in patients with AIDS

Body Wasting

Unwanted weight loss, a symptom of chronic conditions such as HIV, chronic renal failure, multiple sclerosis, and cancer.

Athletes and Anabolic Steroids

May increase muscle strength and build muscle tissue, but can't improve agility or skill.

Penile Erectile Dysfunction

A disorder affecting the ability to get and maintain an erection sufficient for sexual intercourse.
Results from the corpus cavernosum not filling with blood to achieve an erection.

Types of Erectile Dysfunction

Psychogenic: Involves psychological conditions
Vascular: Most common type, caused by blood vessel problems affecting blood flow to the penis.
Hormonal: Due to testosterone deficiency.
Neurogenic: Arises from neurological conditions like stroke or pelvic surgery, trauma, or radiation therapy, disrupting signals from the brain to the penis.

Erectile dysfunction is a common side effect of many prescription drugs, including:
Antihistamines
Anti-anxiety medications
Antidepressants
Parkinson’s disease drugs
Chemotherapy drugs
Blood pressure medications
Antiarrhythmics

Tips for Erectile Dysfunction

Quitting smoking can improve erectile function over time.
Oral medications, like sildenafil (Viagra), vardenafil (Levitra), tadalafil (Cialis), and avanafil (Stendra), increase blood flow to the penis.
These medications typically take effect within one hour.

Diabetes Types 1 and 2

Type 1: Lifelong condition where the immune system attacks and destroys insulin-producing cells.
Type 2: The body either does not produce enough insulin or cells become resistant to insulin.

Medicine for Type 1 Diabetes

Insulin is the primary medication.
Administered either by injection or through an insulin pump attached to the body.

Insulin Pen

Introduced in the late 1980s as an alternative to vials and syringes.
Contains insulin to lower blood glucose levels.
Provides convenient, simple, and accurate insulin delivery.
Steps for using an insulin pen:
Remove pen from the refrigerator and allow it to reach room temperature.
Wash hands thoroughly.
Wipe the pen area with alcohol.
Attach a new needle, ensuring it is straight.
Remove needle caps.
Remove air bubbles by gently tapping the pen.
Select the correct dose by turning the dial.

Body Sites for Injecting Insulin

Insulin can be injected into the upper outer arms, abdomen, buttocks, or upper outer thighs.
Injection into the abdomen works fastest.
Avoid injecting into areas of wounds or bruises.
Use a different site within the chosen area each time to prevent swelling, lumps, or thickened skin.

Injecting Insulin with a Pen

Clean the injection site with an alcohol pad.
Grab a fold of skin with your thumb and first finger.
Insert the needle straight into the skin.
Push the injection button.
Pull the needle out.
Remove the needle and dispose of it in a sharps container.
Replace the pen cap and store the pen as directed.

Insulin Pump

Wearable medical device that delivers a continuous flow of insulin under the skin.
Allows cells to absorb glucose for energy.
Provides easier and painless additional insulin intake compared to injections.

Insulin Pump Disadvantages

Requires attachment for most of the time.
Increased risk of diabetic ketoacidosis if the pump malfunctions.
Risk of skin infection or irritation at the application site.

Metformin for Type 2 Diabetes

Generally, the first medication prescribed for type 2 diabetes.
Works by reducing glucose production in the liver, improving insulin sensitivity, and lowering intestinal sugar absorption.
Considered the safest medication for type 2 diabetes due to its long-term efficacy, affordability, and safety.

Metformin Toxicity

Can lead to gastrointestinal symptoms such as nausea, vomiting, diarrhea, and abdominal pain.
May also result in mental status changes.

Pharmacology Resources

Here are some additional resources for learning more about pharmacology:
YouTube videos on thyroid problems, using nasal sprays, and diabetic drugs.

Principles of Endocrine Pharmacology

Focuses on the therapeutic use of hormones and hormone-like substances
These drugs act by enhancing or suppressing the metabolism of certain glands of internal secretion.

Difference Between Endocrine and Exocrine Glands

Glands are functional units of cells working together
Glands release specific products
Exocrine glands secrete products through a ductal system to an epithelial surface
Endocrine glands secrete products directly into the bloodstream.

The Thyroid

Located in the middle of the lower neck
Butterfly-shaped gland
Produces triiodothyronine (T3), thyroxine (T4), and calcitonin
Regulates body temperature, heart rate, metabolism, and energy
Thyroid disorders occur when the thyroid gland does not produce the proper amount of thyroid hormones

Overactive Thyroid (Hyperthyroidism)

The thyroid gland makes too many hormones
Side effects include weight loss, nervousness, irregular pulse, irritability, sleep problems, vision problems, and muscle weakness.

Underactive Thyroid (Hypothyroidism)

The thyroid gland does not make enough hormones
Side effects include weight gain, depression, forgetfulness, fatigue, dry skin, feeling cold all the time.

Diagnosing Thyroid Disorders

Thyroid disorders are diagnosed via physical examination, ultrasounds, and blood tests
Blood tests measure the levels of T4, T3, and thyroid stimulating hormone (TSH)
Hypothyroidism shows high TSH, low T3, and/or low T4
Hyperthyroidism shows low TSH, high T3, and/or high T4.
Thyroid antibody levels help diagnose autoimmune thyroid disorders, such as Grave’s disease.

Thyroid Disease and Women

Thyroid disease is more common in women
Women have stronger immune responses than men
Women are more prone to autoimmune diseases like Grave's disease
Thyroid disease is usually a lifelong condition.

Medications for Treating Hyperthyroidism

Anti-thyroid medications, called thionamides, are the most common treatment for overactive thyroid
These medications stop the thyroid from producing excess hormones
The main medications are methimazole and propylthiouracil.
Other medications like propranolol are used for extreme symptoms of hyperthyroidism.

Actions of Medications for Treating Hyperthyroidism

Methimazole works quickly and has minimal side effects, making it the first-line treatment for hyperthyroidism
Propylthiouracil is the first-line treatment for pregnant women due to its lower risk of birth defects
Propranolol decreases heart rate and facilitates blood circulation, but it acts differently for anxiety
Avoid caffeine as it can affect the absorption of thyroid drugs like levothyroxine and make the drug pass through the gut too quickly.

Pharmacology of Bone Mineral Homeostasis

Calcium and phosphorus are major components of bone
They provide mechanical strength to the skeleton and are essential for the normal functioning of other cells
A complex regulatory mechanism regulates calcium and phosphate homeostasis
Parathyroid hormone and vitamin D are the primary regulators
Calcitonin, glucocorticoids, and estrogens play secondary roles
Drugs and hormones that mimic or suppress the actions of these regulators are used to treat bone mineral disorders.

Active Metabolites of Vitamin D

Increase calcium absorption from the bone and gut
Stimulate both calcium and phosphate homeostasis
Provide adequate minerals for normal bone formation.

Parathyroid Hormone

Increases calcium reabsorption from bone
Influences bone, gut, and kidney to maintain serum calcium within a tight range
Has a reciprocal effect on phosphate metabolism.
Both parathyroid hormone and vitamin D metabolites reduce urinary excretion of calcium.

Calcitonin, Glucocorticoids, and Estrogens

These hormones, or drugs that mimic or suppress their actions, are commonly used to treat bone mineral disorders like rickets and osteoporosis.

Rickets

A condition affecting bone development in children
Causes soft and weak bones, poor growth, and bone pain leading to bone deformities.

Osteoporosis

Weakens bones, making them fragile and more likely to break
Develops slowly over several years
Often diagnosed after a fall causing a bone fracture
Common osteoporosis injuries include broken wrists.

Medications Commonly Used in Calcium Regulation

Calcitonin is a hormone produced by the thyroid gland
It regulates calcium and phosphate levels in the blood
Calcitonin opposes the action of parathyroid hormone
Intravenous calcium gluconate is preferred for patients with acute symptomatic hypocalcemia
Oral calcium and vitamin D supplements are used to treat chronic hypocalcemia.

Calcitonin Nasal Spray

Calcitonin nasal spray is often used alongside calcium and vitamin D supplements
Treats bone loss in postmenopausal women with osteoporosis
Suitable for patients who have been postmenopausal for at least 5 years and cannot or do not want to take estrogen products.

Androgens - Anabolic Steroids

Anabolic steroids are manufactured forms of testosterone
The technical term is anabolic-androgenic steroids (AAS)
Anabolic refers to tissue building (mainly muscle)
Androgenic refers to a group of sex hormones called androgens, including testosterone, the main androgen.
Steroids are legally available only with a prescription
Used to treat conditions such as delayed puberty and body-wasting in patients with AIDS.

What Causes Body Wasting?

Body wasting is unwanted weight loss
It is a symptom of various chronic conditions like HIV, chronic renal failure, multiple sclerosis, and cancer.

Athletes and Anabolic Steroids

Using anabolic steroids can increase muscle strength and help build muscle tissue
They increase body mass but cannot improve an athlete's agility or skill.
Factors influencing athletic ability include genetics, age, sex, diet, body size, and training intensity.

Drugs for Treating Penile Erectile Dysfunction

Penile erectile dysfunction is a penile disorder
It affects the ability to get and maintain an erection firm enough for sexual intercourse
The corpus cavernosum fails to fill with blood to allow for penile erection.

Types of Erectile Dysfunction

Psychogenic erectile dysfunction involves psychological conditions
Vascular erectile dysfunction is the most common type and involves blood vessel-related causes that affect the penis's ability to receive blood needed for an erection
Hormonal erectile dysfunction is a result of testosterone deficiency.

Types of Erectile Dysfunction (Continued)

Neurogenic erectile dysfunction results from neurological conditions like stroke or other conditions like pelvic surgery, trauma, or radiation therapy
It is a result of nerve problems affecting the transmission of signals from the brain to the penis, which are required for creating an erection.

Effect of Other Prescription Drugs on Erectile Dysfunction

Erectile dysfunction is a common side effect of many prescription drugs, including:
Antihistamines
Anti-anxiety medications
Antidepressants
Parkinson’s disease drugs
Chemotherapy drugs
Blood pressure medications
Antiarrhythmics.

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Description

This quiz covers various aspects of thyroid disorders, including symptoms, diagnosis, and treatment options for hyperthyroidism. Gain insights into the underlying conditions such as hypothyroidism and the importance of thyroid hormone regulation. Test your knowledge on the diagnostics and management of these lifelong conditions.