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Wednesday, April 29, 2015
Sunday, March 18, 2012
Tuesday, March 13, 2012
Parainfluenza viruses
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Common Cold |
- A group of large RNA-containing viruses that cause infections of the respiratory tract producing mild influenza-like symptoms.
- They are included in the paramyxovirus group. ( Search mxyovirus )
Sore Throat Due to Inflammation
Causes
The common cold is caused by a virus. There are over 200 different viruses that can cause a cold, including:- Rhinovirus
- Corona virus
- Adenovirus
- Coxsackie virus
- Paramyxovirus
- Parainfluenza virus
- Respiratory syncytial virus
Risk
A risk factor is something that increases your chance of getting a disease or condition.Risk factors for a cold are:- Being near someone who has a cold
- Touching your nose, mouth, or eyes with contaminated fingers
- Having allergies (lengthens duration of cold)
- Smoking or being near cigarette smoke (due to decreased resistance)
- Stress (due to decreased resistance)
- Sex: female (especially around menstrual periods)
Symptoms
Symptoms include:- Sore or scratchy throat
- Stuffy nose (hard to breathe through your nose)
- Runny nose
- Sneezing
- Itchy, stuffed sensation in the ears
- Watery eyes
- Slight cough
- Headache
- Aches and pains
- Low energy
- Low-grade fever
Sunday, March 11, 2012
Nitric Oxide
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| Nitric Oxide |
- An important member of the group of gaseous mediators, which - together with amine mediators ( e.g. adrenaline, noradrenaline, histamine, acetylcholine ) and lipid mediators ( e.g. prostaglandins ) - produce many physiological responses ( e.g smooth muscle relaxation ).
- Nitric oxide is involved in the manifestations of sepsis and septic shock.
- Formula NO
Saturday, March 10, 2012
Somatostatin ( growth-hormone-release inhibiting factor )
- A hormone, produced by the hypothalamus and some extraneural tissues, including the gastrointestinal tract and pancreas ( search islets of Langerhans ), that inhibits growth hormone ( somatotrophin ) released by the pituitary gland.
- Both growth-hormone releasing hormone and somatostatin are controlled by complex neural mechanisms related to sleep rhythms, stress, neurotransmitters, blood glucose and exercise.
- Its inhibitory effect on gastrointestinal secretions is used to reduce flow from fistula from the pancreas or bowel to the body surface.
- Its effect on reducing abdominal blood flow is used to reduce bleeding from oesophageal varices.
- Somatostatin analogues are used to treat acromegaly, caused by over production of growth hormone, and to relieve the symptoms caused by hormone-secreting neuroendocrine tumours.
- They include lanreotide ( Somatuline ) and octreotide ( Sandostatin ).
Thursday, March 8, 2012
Buphthalmos ( Hydrophthalmos )
- Infantile or congenital glaucoma : increased pressure within the eye due to a defect in the development of the tissue through which fluid drains from the eye.
- Since the outer coat (sclera) of the eyeball of children is distensible, the eye enlarges as the inflow of fluid continues.
- It usually affects both eyes and may accompany congenital abnormalities in other parts of the body.
- Treatment is by surgical operation, eg goniotomy, to improve drainage of fluid from the eye.
- Spontaneous arrest of buphthalmos may occur before vision is completely lost.
Sunday, March 4, 2012
Saturday, March 3, 2012
Chronic obstructive pulmonary disease (COPD, chronic obstructive airways disease)
- A disease of adults, especially those over the age of 45 with a history of smoking or inhalation of airborne pollution.
- The disease has features of emphysema and chronic bronchitis.
- It is diagnosed when the forced expiratory volume in 1 second (FEV1) is less than 60% of the predicted value for the patients age and height and the patient does not respond to steroid drugs or bronchodilators.
- In comparison to asthma, there is less response to inhaled corticosteroids, which may only be indicated for patients with frequent excerbations.
Friday, March 2, 2012
illuminate
- Light up.
- Help to explain or make clear: he illuminates science for the interested reader.
- Decorate (a manuscript) with gold, silver, or coloured designs.
Lipochondrodystrophy
- Other names - (Hurler's Syndrome; Pfaundler-Hurler Syndrome; Lipochondrodystrophy; Hurler-Scheie Syndrome; Mucopolysaccharidosis V; Scheie's Syndrome)
- Multiple congenital defects affecting lipid (fat) metabolism, cartilage and bone, skin, and the major internal organs, leading to mental retardation, dwarfism, and deformities of the bones.
- Systemic lysosomal storage disease caused by a deficiency of alpha-L-iduronidase (iduronidase) and characterized by progressive physical deterioration with urinary excretion of dermatan sulfate and HEPARAN SULFATE.
Thursday, March 1, 2012
International Classification of Diseases ( ICD )
- A list of all known diseases and syndromes, including mental and behavioural disorders, published by the World Health Organisation every ten years ( approximately ).
- Over the years the classification has moved from being disease-oriented to include a wider frame-work of illness and other health problems.
- The latest version, ICD-10 was published in 1992 and employs alphanumeric coding.
- It is used in many countries as the principal means of classifying both mortality and morbidity experience and allows comparison of morbidity and mortality rates nationally and internationally.
- A parallel list, the International Classification of Impairments, Disabilities and Handicaps ( ICIDH ), has also been compiled and is being used experimentally.
Wednesday, February 29, 2012
Charcot-Leyden crystals
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| Charcot-Leyden crystals |
- Charcot-Leyden crystals are microscopic crystals found in people who have allergic diseases such as asthma or parasitic infections such as parasitic pneumonia or ascariasis.
- They vary in size and may be as large as 50 µm in length. Charcot-Leyden crystals are slender and pointed at both ends, consisting of a pair of hexagonal pyramids joined at their bases. Normally colorless, they are stained purplish-red by trichrome. They consist of lysophospholipase, an enzyme synthesized by eosinophils, and are produced from the breakdown of these cells.
- They are indicative of a disease involving eosinophilic inflammation or proliferation, such as is found in allergic reactions and parasitic infections.Charcot-Leyden crystals are often seen pathologically in patients with bronchial asthma.
- Fine colourless sharp-pointed crystals seen in the sputum of asthmatics.
- J.M Charkot (1825-93). French neurologist;
- E.V Von Leyden (1832-1919), German physician.
Monday, February 27, 2012
Vein
| Structure of Vein |
- A blood vessel conveying blood towards the heart.
- All veins except pulmonary vein carry deoxygenated blood from the tissues, via the capilaries, to the vena cava.
- The walls of veins consist of three tissue layers, but these are much thinner and less elastic than those of arteries.
- Veins contain valve that assist the flow of blood back to the heart.
- Anatomical name : Vena
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