Cystic fibrosis question...?
It depends on the age of the person. For teenagers and children, yes, it can. Cystic fibrosis does lead to puberty being delayed and can also make you look younger. My oldest son is 16 and looks younger than that. Another son is 14, hasn't reached puberty yet, but he still looks like he's 14. But, for others, no, it doesn't make them look younger.
Biology question- cystic fibrosis?
Considering the information you have read about cystic fibrosis, which of the following descriptions of the disease best applies? a.Cystic fibrosis is a dominant disease with minimal effects. b. Cystic fibrosis is a co-dominant disease. c. Cystic fibrosis is a recessive disease with pleiotropic effects. d. Cystic fibrosis is an incomplete dominant disease with a heterozygote phenotype. e. Cystic fibrosis is a multi-gene disorder with pleiotropic effects.
Questions regarding Cystic Fibrosis. See details.?
-What specific part of the cell/structure allows the mucus secretions to be thick and viscous rather than fluid (i.e., is it a membrane channel, organelle or something else)? Please be specific and describe the step-by-step mechanism whereby this altered structure/part of the cell causes the secretions to contain less water. -Why does Alvin have salt crystals forming on his skin? Explain the mechanism for this. -What is the accepted treatment for children with cystic fibrosis? Make sure to list at least three and explain why they work (i.e., what is the purpose of each individual treatment). -List and explain the mechanism of at least two experimental treatments that are currently being tried to help patients with cystic fibrosis. -Briefly describe how gene therapy may help cure a genetically inherited disease like cystic fibrosis. link to website with more info (like who alvin is) http://www.sciencecases.org/cf/cf.asp If you can't answer all the questions (only some) that's better than nothing.
Cystic Fibrosis Question?
On Jun 23rd my 4yr old son had to put in the hospital due to an accute pancreatitis attack. He has been home for 2 weeks and still has diarrhea,belly pain,and bloating. We had him to his gastro doctor yesterday and he wants to check him for Cystic Fibrosis. He has no lung symptoms or anything but they really seem to be leaning towards this disease. Can someone give me some info and let me know if I have to to worry about this or not. Please any info would help.
Help with a question about cystic fibrosis and Huntington in relation to homozygous and heterozygous?
Cystic fibrosis is an autosomal recessive disorder. If both of Sally's parents are heterozygous for cystic fibrosis, what are her chances of inheriting cystic fibrosis? Nancy has cystic fibrosis, but neither of her parents have cysitic fibrosis. What is the genotype of all people involved? Huntington disease is an autosomal dominant disorder. If only one of Sam's parents is heterozygous for Huntington disease and the other is homozygous recessive, what are the chances of inheriting the Huntington disease? In Henry's family, only his father has Huntington disease. What are the genotypes of Henry, his mother and his father?
Cystic Fibrosis and osmosis?
Cystic fi brosis is a hereditary disease that mainly affects the lungs and digestive system, causing progressive disability and for some, early death. Cystic fibrosis affects multiple organ systems in the body with the pulmonary and digestive systems being primarily affected. The primary cause of morbidity and mortality in people with CF is lung disease from altered pulmonary system functioning. In healthy cells, the ASL volume, or hydration status, is controlled by the airway epithelial cells switching between absorptive and secretory roles. This is regulated by the movement of ions (Na+ and Cl-) across the basolateral and apical membranes through the interaction of the cellular components mentioned above. Based on the principles of osmosis, the active transport of sodium (Na+) and chloride (Cl-) across the membrane is followed by water to maintain the appropriate hydration of the airway epithelia. The volume of ASL is increased (secretory role) by Cl- secretion through CFTR and calcium activated Cl- channels (CaCC) and is decreased (absorptive role) by Na+ reabsorption through the epithelial sodium channel (ENaC). Therefore, CFTR can increase and decrease ASL volume by secreting Cl- while concurrently inhibiting ENaC to decrease Na+ reabsorption. Because an osmotic gradient is not controlled in the epithelial cells of the airways, the the flow of ions from the interaction between CFTR, CaCC, and ENaC regulate the force that drives fluid excretion or reabsorption. The Na+/K+-ATPase pump creates the electrochemical gradient required for ENaC to allow passive transport of Na+ into the cell, creating a negative electrical potential. This negative electrical potential decreases the force that drives secretion of Cl- and subsequent water flux into the lumen, decreasing the volume of ASL. In healthy cells, this Na+ reabsorption and ASL fluid dehydration is reciprocally regulated by adensoine binding to adenoreceptors to cause the cascade of events that ends with the activation of CFTR (increase in Cl- secretion) and inhibition of ENaC (decrease in Na+ reabsorption), resulting in increased ASL volume and hydration. With the gradient for Cl- being nearly 4 times greater outside the cell in the ASL, the reciprocal regulation is important because it creates the electrical driving force to overcome this concentration gradient that favors Cl- absorption into the cell, allowing for Cl- secretion and hydration of the ASL.
What are some celebrities with cystic fibrosis and how did they develop it?
Um, well, CF is genetic, so you are born with it as opposed to developing it. As for celebrities with CF, this Wikipedia page will tell you what you need to know.
What are some medical conditions that relate to cystic fibrosis?
Briefly, in cystic fibrosis the hallmark of the disease process is the production of and inability to clear very thick mucus secretions (especially in the airways, gastrointestinal tract and genital tract), plus excessive loss of salt in sweat.Starting from birth, up to 90% of newborns with cystic fibrosis may present with meconium ilieus. Any newborn with the following features must be screened for cystic fibrosis:Vomiting and abdominal distension ANDDelayed passage of glue-thick meconium (the first baby stools) for more than 48 hours. It may require enemas or even laparotomy in order to remove the inspissated meconium.During childhood, the patient will mainly present with the following problems:Repeated infections of the upper airways (e.g. sinusitis) and lower airways (e.g. pneumonia). This is due to the excessive thick mucus secretion, which is hard to clear, that predispose to bacterial infection.Nasal polyps in children occurs almost exclusively in cystic fibrosis due to chronic irritation and repeated infections of upper airways.Aerosol treatment, mucolytic, and chest physical therapy are required routinely to clear airway secretions and control infections.Prompt diagnosis and treatment of lower respiratory infections (hospitalization and antibiotics) are very important to prevent the development of complications including bronchiectasis, respiratory failure or even death.Failure to thrive, which means that the child cannot gain weight appropriately. The pancreas cannot release its digestive enzymes to digest food and allow for its absorption due to blockage of its duct by thick mucus. So, the child cannot digest, and hence absorb all the food, which passes under-digested in the form of greasy, foul smelling stools that float.Increasing coloric intake, pancreatic enzyme replacement, and supplementationn of vitamins A, D, E and K are the mainstays of treatment.Excessive loss of salty sweat (especially during exercise, or in hot weather), requires adequate fluid replacement.During adolescence and early adulthood:In addition to the previous problems, females might be subfertile, but almost all males are infertile, either due to inability to produce sperm cells altogether or due to blockage of the canals through which the sperm must flow; (namely epididymis, vas deferens)Current treatment modalities have decreased morbidity and mortality significantly and improved the life expectancies of patients suffering from cystic fibrosis.
Cystic Fibrosis is a recessive disease.?
If a woman has CF then here genotype is cc ( where c=CF gene and C is normal) ...thats easy. The man is normal so has at least 1 normal C allele, but if his mother was CF, then she like his parnter must be cc. She will give her son 1 copy of the c allele, so he will be Cc. THe cross will be ------c--------c----- C---Cc------Cc c----cc------cc So 50% will be carriers ( but normal) and 50% will have CF.
Why does cystic fibrosis have a genetic component?
Cystic fibrosis (CF) is a genetic condition. Genes work in pairs and provide instructions for making proteins. People with CF have one or two faulty CFTR genes. A defect in one or two CFTR genes causes changes in the production and function of a protein called CFTR. This protein is important for allowing different fluids to move in and out of organs within the body, including the lungs.Genes work like a code or set of instructions to determine many things about the human body, like what color our eyes are or what type of blood we have. Genes work in pairs, with one passed on from each parent. People must inherit two faulty CFTR genes to get CF; one from their mother and one from their father.If someone has one faulty and one normal CFTR gene, they are known as a carrier. Carriers of CF have no symptoms, but can pass on the faulty gene to their children.If both parents are carriers, there is a 25% chance the child will have CF. There is also a 25% chance their child will not be affected and a 50% chance they will also be a carrierIf one parent is a carrier and the other has two normal CFTR genes, there is a 50% chance the child will also be a carrier and a 50% chance they will be neither a carrier nor have the conditionOther genetic and environmental factors may affect how severe a person’s CF symptoms are. For example, other, gene mutations could mean a person has more severe symptoms than someone else.For more information on what CF is and its genetic background, check out: What is cystic fibrosis?