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Actos Warning : Tobacco smoking and occupational exposure have been the two major factors related to BC risk; however, not all smokers develop BC and not all cases of BC occurred in smokers or patients with chemical exposure. It has been proposed that there could be factors other than environmental that could affect the incidence on urothelial tumors. In fact, as for many other cancers, molecular researchers are trying to establish genetic alterations linked to carcinogenesis that could justify genetic predisposition.An important research has been conducted in patients with BC in relation to smoking and chemical exposure , trying to identify those patients with higher sus­ceptibility of being affected by environmental carcinogens. Aromatic amines were established carcinogens for urothelium.

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They could be inactivated by acetylation pathway, and it has been postulated that those patients with slow acetylation capability were more susceptible to BC than those that are rapid acetylators. NAT-1 and NAT-2 are N-acetyltransferase genes located on the short arm of human chromosome 8 and they are involved in amines inactivation. Reduction in NAT-2 activity has been suggested as mechanism for BC predisposition among patients exposed to environmental carcinogens such as aromatic amines.A number of SNPs have been reported in NAT-2 coding exon, as well as over 35 NAT-2 haplotypes have been identified (Hein 2006). Several of these haplotypes corresponded to NAT-2 slow acetylator phenotype and NAT-2 slow acetylation genotype has been related to higher risk of BC.

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The Spanish Bladder Cancer Study is a hospital-based case-control study on BC conducted in five different areas in Spain that included 1150 cases and 1149 controls. They evaluated in this great population the association of several polymorphisms in NAT and GST genes with BC risk and their interaction with cigarette smoking. In addition, they reported a metaanalysis of 29 studies of NAT-2 and BC including 5096 cases and 6519 controls. They demonstrated that NAT-2 slow acetylators had a 40% increase in BC risk compared to rapid/intermediate acetylators with an OR of 1.4 (95% CI, 1.2-1.7). They could also demonstrate a significant multiplication interaction between NAT-2 slow acetylation genotype and cigarette smoking, that is, NAT-2 slow acetylators were especially susceptible to the adverse effects of ciga­rette smoking on BC risk. On the other hand, the metaanalysis performed corrobo­rated their own data, being the summary on relative risk for NAT-2 slow acetylators compared to rapid/intermediate acetylators of 1.4 (Garcia-Closas et al. 2005).Other SNPs in different genes have been studied. Nucleotide excision repair (NER) pathway is a complex mechanism for repairing DNA damage and subse­quently for preventing carcinogenesis. NER pathway included several genes, and different SNPs on those genes have been related to an increase in BC risk. Twenty- two SNPs on seven NER genes were evaluated in 1150 cases and 1149 controls included in The Spanish Bladder Cancer Study. Four of these 22 SNPs in NER genes could be significantly related to a small increase in BC risk and interestingly it could be demonstrated as a stronger association between BC and polymorphism in ERCC2 gene (ERCC2 R156R) for never-smokers compared with ever-smokers (Garcia-Closas et al. 2006).

Other study including 696 patients with BC and 629 controls evaluated the asso­ciation with BC risk of a comprehensive panel of 44 SNPs in genes of NER path­way and genes involved in cell cycle control. They concluded that patients with higher numbers of variants in NER genes rather than single polymorphism are at increased risk for BC (Wu et al. 2006).

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Actos Warning : The urinary system (Figure i-i) is very important and has a pretty tough job to do in everyone’s body. It filters your blood and produces waste products in the form of urine. More importantly, it allows you to store urine until it is convenient to urinate. Just think, if we couldn’t store urine, then we would constantly leak waste products. This would make life very difficult and get in the way of things we do during the course of a normal day. The human urinary system is made up of the kidneys, ureters, bladder, and urethra. Men have a prostate gland in addition to the previously mentioned components.

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KIDNEYS

Your kidneys are two bean-shaped organs that reside in the rear of your abdomen, just under the diaphragm on the left and below the liver on your right side. The kidneys filter blood and produce urine. They are extremely impor­tant to life and work extremely hard to filter waste from your bloodstream. Just imagine, the kidneys filter approx­imately 20 percent of your blood each minute. Although most people have two kidneys, some individuals have one and do just fine. The kidneys function independently, and when one is not working as well, the other compensates and filters more blood. In addition to filtering blood and producing urine, your kidneys help to regulate your blood pressure. They produce special hormones and control the salt and water balance in your body. Normally, the kid­neys do not release blood cells into urine. This is why it’s important to be evaluated by a doctor if you have blood in your urine.

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URETHRA

The urethra is a hollow tube lined with transitional cells at its beginning that connects the bladder to the outside world. The structure of the urethra is different in men and women. The urethra is short in women and is much longer in men due to the presence of the penis. The cells lining the

urethra change along its length. The inner cells, closest to the bladder, are transitional cells, whereas the cells closest to the outside of the body are squamous cells resembling skin. Although the urethra has different lengths in men and women, it functions the same. In men, the urethra passes through the prostate gland near the bladder.

PROSTATE

The prostate, a walnut-sized organ that lies at the base of the bladder in men, plays a role in male fertility. Along with the seminal vesicles, the prostate gland produces fluid that helps sperm after ejaculation. Although the urethra passes through the prostate, the gland itself does not add much, if anything, to the volume of urine that reaches the bladder. As the urethra passes through the prostate, it is lined by transitional cells comprising the urothelium. Therefore, tilings that affect the urothelium can affect the prostate as well. This is very important when it comes to staging bladder cancer.

Our use of the term or terms Actos Warning is for descriptive purposes only. There is no relationship between the owners of this website and the maker of the product discussed in this post. Our use of the words Recall, Class Action Lawsuit and other similar words related to an event do not necessarily mean that this event has occurred. Refer to the website of the United States Food and Drug Administration for information on drug or medical device recalls. If a Class Action Lawsuit is formed in relation to the product discussed in this post we will provide that information at the time the Class Action is formed. A Class Action Lawsuit is not required to exist for you to file a lawsuit if you have been injured by the product discussed in this post.

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Actos Warning : Some scientists believe this may help improve your outcome from treatment. If you smoke a pipe or cigar, you may also have an increased risk for developing bladder cancer, but cigarettes are the main culprit behind bladder cancer today.

Chronic inflammation of your bladder may also place you at an increased risk of developing a specific type of bladder cancer called squamous cell carcinoma. Inflammation occurs when one has an untreated urinary tract infection, bladder stones, an indwelling bladder catheter, or an infection with a parasite called Schistosoma haematobium. Paraplegics or quadriplegics who require a catheter to drain their bladders and those who live in areas where S. haematobium is common are at greatest risk.

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Saridon (phenacetin) and Cytoxan (cyclophosphamide) are two other substances that can increase your risk of bladder cancer. Phenacetin is a pain medicine that is no longer used that was previously shown to be associated with bladder cancer. Cytoxan is a drug used for chemotherapy that has been associated with bladder cancer. This may sound puzzling as you wonder, “how does one drug used to treat cancer cause another cancer?” Cytoxan itself is not the problem. Most medications are broken down by our bodies into components before being eliminated in our stool or urine. One of the byproducts of cyclophosphamide, called acrolein, can irritate the wall of your bladder, causing a lot of blood in your urine. Over time, this can increase the risk of developing bladder cancer.

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A history of radiation therapy for a pelvic cancer may increase your risk of bladder cancer. Radiation has a role in the treatment of prostate, cervical, and ovarian cancers. Although the radiation is focused on the involved organ, the bladder and other surrounding structures also absorb radiation that sometimes damages the urothelium and leads to cancer.

Our use of the term or terms Actos Warning is for descriptive purposes only. There is no relationship between the owners of this website and the maker of the product discussed in this post. Our use of the words Recall, Class Action Lawsuit and other similar words related to an event do not necessarily mean that this event has occurred. Refer to the website of the United States Food and Drug Administration for information on drug or medical device recalls. If a Class Action Lawsuit is formed in relation to the product discussed in this post we will provide that information at the time the Class Action is formed. A Class Action Lawsuit is not required to exist for you to file a lawsuit if you have been injured by the product discussed in this post.

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Actos Warning : Much attention has been paid to the influence of diet on cancer risk and treatment. Thus far, some scientists have suggested that vegetables, fresh fruits, and some fermented milk products appear to decrease one’s risk of developing bladder cancer. A few foods thought to increase the risk of developing bladder cancer are foods rich in animal fat, diose containing a lot of cholesterol, fried foods, and processed meat with various additives. We are not sure of the exact influence of diet on bladder cancer at this point in time. Scientists around the world are working on uncovering potential links between diet and bladder cancer.

ARE THERE VARIOUS TYPES OF BLADDER CANCER?

As with other cancers that affect different body parts, there are multiple types of bladder cancer. To better understand them, let’s separate bladder cancer into two different groups: primary tumors that originate in the bladder and secondary tumors that spread to the bladder from other places.

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Primary bladder cancers form within the bladder. Over 90 percent of primary bladder cancers in the United States are of the urothelial or transitional subtype. These form along the inner lining of the bladder. The second most common type of primary bladder cancer in the United States is squamous cell carcinoma, making up approximately 5 percent of all cancers diagnosed. These are often diagnosed in individuals whose bladder has been chronically irritated by an infection, stones, or an indwelling catheter. The third most common subtype of bladder cancer in the United States is adenocarcinoma, accounting for approximately 2 percent of all diagnosed cases. These typically form near the dome of the bladder. There are other types of primary bladder cancer, but these are very rare. If necessary, your urologist will speak to you about these rare types.

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Secondary cancers form somewhere else in the body and spread to the bladder. Other tumors can get to the bladder by using the bloodstream, your lymphatic system, or directly from an organ close to the bladder. Other cancers that spread to the bladder, in order of decreasing frequency, are melanoma, colon cancer, prostate cancer, lung cancer, and breast cancer.

Now that we’ve discussed some of the basics concerning bladder cancer, let’s examine how you should go about choosing a medical team to treat your cancer.

Our use of the term or terms Actos Warning is for descriptive purposes only. There is no relationship between the owners of this website and the maker of the product discussed in this post. Our use of the words Recall, Class Action Lawsuit and other similar words related to an event do not necessarily mean that this event has occurred. Refer to the website of the United States Food and Drug Administration for information on drug or medical device recalls. If a Class Action Lawsuit is formed in relation to the product discussed in this post we will provide that information at the time the Class Action is formed. A Class Action Lawsuit is not required to exist for you to file a lawsuit if you have been injured by the product discussed in this post.

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