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Cortisol and Glucocorticoids
Cortisol and Glucocorticoids samer kareem 3,630 Views • 2 years ago

The vast majority of glucocorticoid activity in most mammals is from cortisol, also known as hydrocortisone. Corticosterone, the major glucocorticoid in rodents, is another glucocorticoid. Cortisol binds to the glucocorticoid receptor in the cytoplasm and the hormone-receptor complex is then translocated into the nucleus, where it binds to its DNA response element and modulates transcription from a battery of genes, leading to changes in the cell's phenotype. Only about 10% of circulating cortisol is free. The remaining majority circulates bound to plasma proteins, particularly corticosteroid-binding globulin (transcortin). This protein binding likely decreases the metabolic clearance rate of glucocorticoids and, because the bound steroid is not biologically active, tends to act as a buffer and blunt wild fluctuations in cortisol concentration.

CPAP demonstration
CPAP demonstration samer kareem 5,818 Views • 2 years ago

CPAP is a treatment that uses mild air pressure to keep your breathing airways open. It involves using a CPAP machine that includes a mask or other device that fits over your nose or your nose and mouth, straps to position the mask, a tube that connects the mask to the machine’s motor, and a motor that blows air into the tube. CPAP is used to treat sleep-related breathing disorders including sleep apnea. It also may be used to treat preterm infants who have underdeveloped lungs.

High Resolution Upper Airway Anatomy
High Resolution Upper Airway Anatomy samer kareem 1,213 Views • 2 years ago

High Resolution Upper Airway Anatomy

GASTROPARESIS
GASTROPARESIS samer kareem 6,023 Views • 2 years ago

Gastroparesis -- literally “paralyzed stomach” -- is a serious condition manifested by delayed emptying of stomach contents into the small intestine after a meal. There is no cure for gastroparesis, but treatment can speed gastric emptying and relieve gastrointestinal symptoms such as nausea and vomiting.

Allergic Bronchopulmonary Aspergillosis
Allergic Bronchopulmonary Aspergillosis samer kareem 4,455 Views • 2 years ago

Allergic bronchopulmonary aspergillosis (ABPA) is a condition characterised by an exaggerated response of the immune system (a hypersensitivity response) to the fungus Aspergillus (most commonly Aspergillus fumigatus). It occurs most often in patients with asthma or cystic fibrosis.

Fungi and Antifungal Agents
Fungi and Antifungal Agents samer kareem 1,650 Views • 2 years ago

This is a brief overview of antifungal agents, their mechanisms of action, and some fungi that they affect.

Bengmark Naso-Intestinal tube
Bengmark Naso-Intestinal tube samer kareem 6,336 Views • 2 years ago

Bengmark Naso-Intestinal tube

Henoch--Schönlein Purpura
Henoch--Schönlein Purpura samer kareem 22,475 Views • 2 years ago

An antecedent upper respiratory infection is present in 50% of patients. Abdominal pain is a presenting symptom in 1 0-15% of patients. The skin lesions are symmetric, involve dependent parts of the body, and classically progress from an erythematous, macular rash to papular purpura. The joints and kidneys are also commonly involved

Osler Weber Rendu
Osler Weber Rendu samer kareem 4,209 Views • 2 years ago

-Osler-Rendu-Weber syndrome is characterized by multiple telangiectasias and vascular lesions of the CNS.

Breast Cancer Stages
Breast Cancer Stages samer kareem 18,515 Views • 2 years ago

Stages In Breast Cancer

HELLP syndrome
HELLP syndrome samer kareem 1,782 Views • 2 years ago

The cause of HELLP syndrome is unknown, but there are certain factors that may increase your risk of developing it. Preeclampsia is the greatest risk factor. This condition is marked by high blood pressure and swelling, and it typically occurs during the last trimester of pregnancy.

Integral Leg Prosthesis System - 3D Overview
Integral Leg Prosthesis System - 3D Overview samer kareem 13,744 Views • 2 years ago

Integral Leg Prosthesis System surgical procedure performed

Medication Use During Pregnancy
Medication Use During Pregnancy samer kareem 5,357 Views • 2 years ago

Medication Use During Pregnancy

Meckel's Diverticulum
Meckel's Diverticulum samer kareem 5,810 Views • 2 years ago

The differential diagnosis for this child's painless hematochezia includes Meckel's diverticulum as well as vascular malformations. Meckel's diverticulum results from a failure of the vitelline duct to obliterate during the first 8 weeks of gestation, leaving behind a blind pouch often containing ectopic gastric tissue. Meckel's diverticulum classically affects children age ~:2 but can also occur in older children or even adults. Young children are more likely to experience painless bleeding due to mucosal irritation from gastric acid; adolescents and adults are more likely to have signs of obstruction. A technetium-99 nuclear scan will identify the diverticulum, which is usually located in the right lower quadrant of the abdomen within 2 feet of the ileocecal valve. Technetium-99 concentrates in the parietal cells of the diverticulum and stomach. The scan is also known as "Meckel's scan" due to its high specificity. A symptomatic Meckel's diverticulum is generally treated with surgical resection.

Multiple Vaginal Orgasms
Multiple Vaginal Orgasms samer kareem 3,736 Views • 2 years ago

To learn how to give multiple vaginal orgasms

External breathing lung transplant
External breathing lung transplant samer kareem 13,091 Views • 2 years ago

External breathing lung transplant

Is there scientific proof we can heal ourselves?
Is there scientific proof we can heal ourselves? samer kareem 4,592 Views • 2 years ago

Is there scientific proof we can heal ourselves?

How your ear works
How your ear works samer kareem 16,294 Views • 2 years ago

Sound waves enter the ear canal and make the ear drum vibrate. This action moves the tiny chain of bones (ossicles – malleus, incus, stapes) in the middle ear. The last bone in this chain 'knocks' on the membrane window of the cochlea and makes the fluid in the cochlea move.

Limb Surgeries
Limb Surgeries samer kareem 1,035 Views • 2 years ago

Three lower limb surgeries that you need to know about.

J-Pouch Reconstruction
J-Pouch Reconstruction samer kareem 8,002 Views • 2 years ago

When the colon and rectum are removed (due to ulcerative colitis or familial adenomatous polyposis), another reservoir must be created for bowel contents (stool) to exit the body. Surgically creating a “J” shaped reservoir (called a J-pouch) is an option for selected patients to store and pass stool.

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