Cystic Fibrosis : An Autosomal Recessive Lung Disease

Cystic Fibrosis (CF) is an autosomal recessive genetic disease that causes thickened mucus to form in the lungs, pancreas, and other organs. It affects a specific protein called Cystic Fibrosis Transmembrane Regulator (CFTR) that controls the normal movement of sodium, chloride, and water in and out of the cells within the body. Those diagnosed with CF have either too little or abnormal CFTR. When CFTR is absent or defective, the mucus usually secreted by the cells in the pulmonary airways, pancreatic ducts, and gastrointestinal tract become thickened, leading to obstructions, frequent infection, and loss of function in the affected organs (Cystic Fibrosis Symptoms, Causes & Risk Factors, 2018). According to the Cystic Fibrosis Foundation

Cystic fibrosis (CF) is a lethal autosomal recessive disorder with a clinical incidence of 1 in every 3500 newborns1. Currently, over 4000 Canadians have CF, with 60% being adults2. In the past, CF was considered a fatal disease with a life expectancy of less than two years, however, advances in enzymatic and antibiotic therapy have greatly improved the life expectancy of patients afflicted with CF3. Currently, the median age of Canadian CF patients is 50 years2.

A widely accepted Caucasian disease has since changed; as cases of its existence are appearing in the South Asian Population (Orenstein, Rosenstein and Stern, 2000). First discovered in 1989, Cystic Fibrosis (CF) is a genetically predetermined condition, its presences is lifelong and highly complex, which is why many CF sufferers and families develop various mechanisms in order to adapt to the condition (Tippingemail, Scholes, Cox, 2010). Cystic Fibrosis causes the body to develop thick, sticky mucus which clogs the lungs and affects other organs in the body, mainly the pancreas. The layer of mucus if untreated develops in to a chronic infection which can be detrimental. The pancreas of a CF patient is most vulnerable, once the mucus has

Cystic Fibrosis (CF) is a genetic disorder in which mucus glands produce abnormally thick secretions. These secretions can lead to chronic infections of the lungs and eventually lead to obstruction of the pancreas, resulting in digestive enzyme deficiency, the liver is also sometimes affected. Secretions from the sweat and salivary glands of a CF patient frequently contain abnormally high amounts of sodium and chloride. Because the body produces a high amount of salt, a sweat test is generally used to diagnose the disorder.

Cystic Fibrosis, also known as CF, is one of the most common life-threatening genetic disorders found in people. Discovered in 1938 by Dr. Dorothy Hansine Andersen, Cystic Fibrosis severely affects two parts of the human body, including the respiratory system and the digestive system. Cystic Fibrosis causes the mucus glands to secrete very thick and sticky mucus. This mucus then clogs the tiny air passages and traps bacteria in the lungs. The thick mucus also stops the release of digestive enzymes in the pancreas from reaching the small intestine. According to Cystic Fibrosis Queensland (2015) more than one million Australians carry the Cystic Fibrosis Gene, with one in every 25 people, often not realising they are carrying the deadly gene.

Cystic Fibrosis is a genetic disease which is progressive and limits breathing ability. The lungs and other organs are affected by a thick buildup of mucus. This mucus traps bacteria which leads lung damage, infections, and respiratory failure. The digestive enzymes being released is prevented, affecting the breakdown of food and nutrients being absorbed. ?More than 30,000 children and adults in the United States have Cystic Fibrosis. 70,000 people worldwide.? (Diagnosed With Cystic Fibrosis, Cystic Fibrosis Foundation) Someone who has Cystic Fibrosis have a defective gene from each parent which produces faulty protein. The CFTR gene is the gene that is mutated causing this. The channel that transports chloride in and out of cells is created by instructions that are created by CFTR gene. The regulation of chloride ions and water are prevented creating the thick mucus formed on the passageways of lungs, pancreas, and other organs. Cystic Fibrosis doesn?t cause learning problems are mobility of the person. Babies with this still develop and grow up normally. The average life expectancy is close to 40 years, and has been increasing in the last fifty years thanks to improved care. ?Chronic coughing, recurring chest colds, wheezing, shortness of breath, frequent sinus infections, and allergies that last all year, are the most common symptoms of Cystic Fibrosis.? (Cystic Fibrosis Symptoms) Since this disease is progressive

Cystic fibrosis (CF) is an inherited disease that affects the lungs and digestive system (National Heart, Blood, and Lung Institute, 2013). CF is caused by mutations of the cystic fibrosis transmembrane conductance regulator (CFTR) gene located on chromosome 7q31 (Beery & Workman, 2012, p. 192). More than 1600 different mutations in this gene have been identified, but 70% of cystic fibrosis patients have the amino acid ΔF508 defect. This mutation occurs when the CFTR protein is missing three nucleotides at position 508 which codes for the amino acid phenylalanine essential to nutrition (Scott, 2013, p. 493).

Cystic Fibrosis is a genetic disease that causes the body’s lungs to generate a different type of mucus than a non-infected body would. The contaminated lungs will produce mucus that is thick and adhesive which clogs the lungs and leads to an unpleasant and abhorrent lung infection. CF also interferes with the pancreas, disallowing the digestive enzymes from breaking down and absorbing food in the intestine. This can result in low nutrition, feeble growth, excessive sweat production, difficulties in breathing, and sometimes lung disease. When producing extra sweat and mucus, the body loses salt. If too much salt is lost, it can cause abnormal heart rhythms, disturbance of minerals in the blood, and perhaps, shock.

The pancreas produces insulin and makes proteins that process sustenance. In Cystic Fibrosis patients, the thick sticky bodily fluid is delivered, obstructs the conduits of the pancreas, diminishing the creation of insulin and keeping digestive chemicals from achieving the guts to help absorption. At the point when this happens, patients can have ceaseless the runs, hunger, poor development and weight reduction. In their puberty or even adulthood, patients with Cystic fibrosis can create cystic-fibrosis related diabetes mellitus (CFRDM) because of the deficiency of insulin. Cystic fibrosis was once viewed as a lethal sickness in influenced patient's youth, yet with enhanced and new medications, better administration of the infection, and on-going examination, patients with Cystic fibrosis are living great into adulthood. Consistently, 1,000 youngsters with cystic fibrosis (CF) are conceived in the United States. One in 3,000 Caucasian babies has the confusion, making CF a standout amongst the most widely recognized deadly hereditary sicknesses in

Cystic fibrosis (CF) is the most common lethal autosomal recessive disease affecting Canadians (2). CF can affect multiple organs; however, the most fatal symptoms occur in the lung. As of 2013, the median age of survival for CF is roughly 50 years old with treatment (3). However, patient life-span decreases dramatically when treatment options such as antibiotics and enzymes are not administered, and nutritional changes or lung transplants are not made (3). Currently, there is no cure for CF, although current treatments can improve patient outcome.

Here are some other changes affecting CF patients: Crackles, non-productive or productive cough, physical changes to the chest cavity, cyanosis, and clubbing of the fingernails. Genetic testing should be done since cystic fibrosis is an inherited disorder. Those affected with cystic fibrosis have parents “who do not have cystic fibrosis but are heterozygotes or carriers of the disease. A heterozygote has 1 dominant allele and 1 recessive allele.” (Grossman & Grossman, 2005, p. 46) My co-worker and her spouse are heterozygotes, and they have a 50/50 chance of having a cystic fibrosis child, they were not lucky with the odds and both their sons are affected with cystic fibrosis. These

Cystic Fibrosis (CF) is an autosomal recessive gene that causes a wide range of symptoms because there are over 1,000 changes or mutations that can occur within the cystic fibrosis transmembrane receptor (CFTR) protein. The CFTR protein is generally a chloride ion chain “regulated by cyclic adenosine monophosphate and therefore can act as a regulator of other electrolyte channels”(Grossman, S., & Grossman, L. 2005, p. 46). Typically this protein allows chloride ions to exit mucus-producing cells allowing water to flow in and thin the mucus. However, if the CFTR protein has been mutated, such as in cystic fibrosis, chloride ions cannot exit. This causes the mucus to thicken, become sticky, and obstruct the various channels it passes through. This build up of mucus also prevents bacteria from being cleaned from cells thoroughly increasing the patients risk for infections (Grossman, S., & Grossman, L. 2005). However, the severity of CF depends on whether the patients have complete or partial loss of the CFTR gene. If the person has the classic form of CF abnormalities of CFTR will commonly affect “…the respiratory, gastrointestinal, endocrine and metabolic, and genitourinary systems”(Schram, C. 2012). However, if people have atypical forms of CF their genetic disorder may only affect one of the organ systems and may not be found until the patient develops symptoms in their late childhood, early adolescence, or adulthood

Purpose of the Study: Dysfunction of the cystic fibrosis transmembrane conductance regulator (CFTR)1 is responsible for cystic fibrosis (CF), an inherited multisystem disease characterized by progressive deterioration in lung function and pancreatic insufficiency. CFTR appears to act as a negative modulator of inflammation2, both under basal conditions and in the presence of inflammatory triggers such as lipopolysaccharide derived from Pseudomonas aeruginosa, the major cause of morbidity and mortality in CF3-5. Compounds that either potentiate CFTR function by increasing the time that chloride channels are open (VX-770) or enhance cellular processing and delivery of CFTR to the cell membrane (VX-809) may therefore augment the immune response as the quantity and function of CFTR increase.

Cystic Fibrosis is caused by a genetic defect in Chromosome 7. Chromosome 7 encodes the cystic fibrosis transmembrane conductance regulator, also known as CFTR. There are over 1,000 mutations of this gene causing cystic fibrosis, with each mutation manifesting as a different variation of disease onset and clinical presentation. The most common mutation is the loss of phenylalanine residue at deltaF508. The abnormal functioning CFTR causes impaired chloride transport and more viscous secretions. The defect causes dehydrated secretions in the respiratory tract and gastrointestinal tract. Being dehydrated, these secretions become more difficult to move throughout the body. Along with impaired

Cystic fibrosis (CF) is a life-shortening, genetic, multisystem disease. It mainly affects the respiratory and the gastrointestinal systems, but it also can involve the endocrine system, sweat glands, reproductive system, haematological system, bones and joints (Chisholm-Burns et al., 2013). The pathophysiology of CF is caused by a mutation in the CFTR (cystic fibrosis transmembrane conductance regulator) gene, which acts as a chloride channel on epithelial cells, and it has many other regulatory roles, for instance it works on inhibiting sodium transport through the epithelial sodium channel. In order for the disease to develop it require two copies of the abnormal gene i.e. an autosomal recessive disease (Davies, Alton and Bush, 2007). Until now, almost 2,000 different CFTR mutations have been discovered and grouped into 5 classes. The most common mutation, appearing in more than 80% of the patients, is in class II, which is called delta-F508 (ΔF508). (De Boeck, Zolin, Cuppens, Olesen & Viviani, 2014). The clinical manifestations of the disease can vary between patients, according to the age, the severity of the disease and the involved body system. It can appear from an early age and continues throughout the life of the patient (O 'Sullivan and Freedman,