by: University
"Neovascular age-related macular degeneration (nvAMD) is a chronic, progressive disease of the central retina, and its prevalence is expected to rise with the aging population. Using a bottom-up approach based on retrospective data, this cross-sectional study estimated average annual direct costs of nvAMD to be A 4,047 pound, and average annual indirect costs to be A 449 pound," scientists in Bristol, the United Kingdom report.
"An attempt to measure intangible costs through willingness-to-pay yielded a lower response rate and estimated intangible costs to be 11.5% of monthly income. Direct costs were significantly higher for male participants, for those who have mild or moderate visual impairment in both eyes, and for those who have been diagnosed for a shorter time," wrote K.M. Ke and colleagues, University of Bristol.
The researchers concluded: "The findings of this study suggest that the availability of early diagnosis, effective treatment, support services, and sustained research into the management of nvAMD may reduce the burden of visual impairment caused by nvAMD to affected individuals and the state."
Ke and colleagues published their study in European Journal of Health Economics (The direct, indirect and intangible costs of visual impairment caused by neovascular age-related macular degeneration. European Journal of Health Economics, 2010;11(6):525-531).
For additional information, contact K.M. Ke, University of Bristol, Bristol Dental School, Dept. of Oral & Dental Science, Lower Maudlin St., Bristol BS1 2LY, Avon, UK.
The publisher's contact information for the European Journal of Health Economics is: Springer, 233 Spring St., New York, NY 10013, USA.
Keywords: City:Bristol, Country:United Kingdom, Age-Related Macular Degeneration, Retinal Degeneration, Retinal Diseases
Monday, December 27, 2010
Monday, December 20, 2010
Genetic Testing for AMD is here Today
by:Diana Shechtman OD FAAO & Steven Ferrucci OD FAAO
Age-Related macular degeneration (AMD) is a progressive disease and the leading cause of vision loss among the elderly, affecting central vision required for daily activities such as driving and reading. There are a number of factors affecting AMD, such as advanced age, smoking, UV exposure, overall health (that contribute to high blood pressure, obesity, diet) and family history. Many factors may be modified and yet others like genetics cannot. Although AMD may seem to be hereditary in some families and not others, genetics have been shown to contribute significantly to the disease. Multiple twin and sibling studies have collaborated to the familial nature of the disease. First-degree relatives of patients with AMD are at a significantly increased risk for the disease. Furthermore, large epidemiological studies have suggested a strong genetic risk factor for AMD. In fact, the risk of developing AMD increases 4 fold among patients with a positive family history. In 2005 a breakthrough occurred in the area of genetic research and AMD; Klein and associates discovered a strong link between AMD and certain genetic variants. Similarly, numerous other genes have been implicated in AMD, which may increase the risk of AMD up to 70%.
Until recently there was no test to help determined patient’s inherited risk for AMD. Today, Macula Risk (ArcticDX, Toronto, Ontario) is a genetic test specifically designed to determine genetic predisposition to AMD and vision loss attributed to the more advanced stage of the disease.
Macula Risk genetic test separates individuals into one of 5 macula risk (MR) categories, with MR 3 through 5 representing an increased risk for the more advance stage of the disease. This accounts for approximately 20% of the general population. MR1 has less than a 5% risk of the advanced stage of the disease, while MR 5 carries greater than 55% risk. These results can aid the doctor in devising a specific management plan and follow-up protocol in order to reassure early intervention to prevent vision loss.
The test only requires a simple in-office cheek swab, which is sent directly to the genetic lab. The report includes test results and written genetic support information (including access to genetic counseling). Macula Risk genetic testing is covered by most insurance providers, including Medicare, as long as the specific diagnosis (ICD-9) are identified by the doctor. The prognostic genetic test is intended for patients who have a diagnosis of early or intermediate AMD. Thus, the “at risk patient,” would have to pay a fee for the test.
Despite our best efforts and new treatment options available today, many people are still losing vision from AMD. New advancements in the area of AMD are becoming an integral part in preventing future visual deterioration. AMD is affected by both environmental and genetic factors that interact with one another to determine prevalence and progression of the disease. Furthermore, at this time we do not know all of the genes linked to AMD. Hence, genetic testing in the area of AMD is only a risk indicator and cannot predict “without a shadow of a doubt,” which patients will and which will not develop the disease. However, this test provides a genetic profile screening to help identify those at risk as well as aids in tailoring a distinct management approach for those with the disease. With various researches devoted to treatment options for AMD, genetic testing in the area of AMD is at the frontier of providing crucial information.
REFERENCES
1. Swaroop, Branham KE, Chen W, Abecasis G. Genetic susceptibility to age-related macular degeneration: a paradigm for dissecting complex disease traits. Hum Mol Genet 2007; 16: 174-82.
2. Klein ML, Mauldin WM, Stoumbos VD. Heredity and age-related macular degeneration. Observations in monozygotic twins. Arch Ophthalmol. 1994; 112: 932-7.
3. Meyers SM, Greene T, Gutman FA. A twin study of age-related macular degeneration. Am J Ophthalmol. 1995; 120: 757-66.
4. Heiba IM, Elston RC, Klein BE, et al. Sibling correlations and segregation analysis of age-related maculopathy: The Beaver Dam Eye Study. Genet Epidemiol. 1994; 11: 51-67.
5. Klaver CC, Wolfs RC, Assink JJ, et al. Genetic risk of age-related maculopathy. Population-based familial aggregation study. Arch Ophthalmol. 1998; 116: 1646-51.
6. Seddon JM, Ajani UA, Mitchell BD. Familial aggregation of age-related maculopathy. Am J Ophthalmol. 1997; 123: 199-206.
7. Klein RJ, Zeiss C, Chew EY, et al. Complement Factor H Polymorphism in Age-Related Macular Degeneration. Science 2005; 308: 385-389.
8. Seddon JM, Reynolds R, Maller J, Fagerness JA, Daly MJ, Rosner B. Prediction model for prevalence and incidence of advanced age-related macular degeneration based on genetic, demographic, and environmental variables. Invest Ophthalmol Vis Sci 2009; 50 (65): 2044-53.
9. www.macularisk.com/en/physicians/order.html (accessed Dec. 14th , 2010)
Age-Related macular degeneration (AMD) is a progressive disease and the leading cause of vision loss among the elderly, affecting central vision required for daily activities such as driving and reading. There are a number of factors affecting AMD, such as advanced age, smoking, UV exposure, overall health (that contribute to high blood pressure, obesity, diet) and family history. Many factors may be modified and yet others like genetics cannot. Although AMD may seem to be hereditary in some families and not others, genetics have been shown to contribute significantly to the disease. Multiple twin and sibling studies have collaborated to the familial nature of the disease. First-degree relatives of patients with AMD are at a significantly increased risk for the disease. Furthermore, large epidemiological studies have suggested a strong genetic risk factor for AMD. In fact, the risk of developing AMD increases 4 fold among patients with a positive family history. In 2005 a breakthrough occurred in the area of genetic research and AMD; Klein and associates discovered a strong link between AMD and certain genetic variants. Similarly, numerous other genes have been implicated in AMD, which may increase the risk of AMD up to 70%.
Until recently there was no test to help determined patient’s inherited risk for AMD. Today, Macula Risk (ArcticDX, Toronto, Ontario) is a genetic test specifically designed to determine genetic predisposition to AMD and vision loss attributed to the more advanced stage of the disease.
Macula Risk genetic test separates individuals into one of 5 macula risk (MR) categories, with MR 3 through 5 representing an increased risk for the more advance stage of the disease. This accounts for approximately 20% of the general population. MR1 has less than a 5% risk of the advanced stage of the disease, while MR 5 carries greater than 55% risk. These results can aid the doctor in devising a specific management plan and follow-up protocol in order to reassure early intervention to prevent vision loss.
The test only requires a simple in-office cheek swab, which is sent directly to the genetic lab. The report includes test results and written genetic support information (including access to genetic counseling). Macula Risk genetic testing is covered by most insurance providers, including Medicare, as long as the specific diagnosis (ICD-9) are identified by the doctor. The prognostic genetic test is intended for patients who have a diagnosis of early or intermediate AMD. Thus, the “at risk patient,” would have to pay a fee for the test.
Despite our best efforts and new treatment options available today, many people are still losing vision from AMD. New advancements in the area of AMD are becoming an integral part in preventing future visual deterioration. AMD is affected by both environmental and genetic factors that interact with one another to determine prevalence and progression of the disease. Furthermore, at this time we do not know all of the genes linked to AMD. Hence, genetic testing in the area of AMD is only a risk indicator and cannot predict “without a shadow of a doubt,” which patients will and which will not develop the disease. However, this test provides a genetic profile screening to help identify those at risk as well as aids in tailoring a distinct management approach for those with the disease. With various researches devoted to treatment options for AMD, genetic testing in the area of AMD is at the frontier of providing crucial information.
REFERENCES
1. Swaroop, Branham KE, Chen W, Abecasis G. Genetic susceptibility to age-related macular degeneration: a paradigm for dissecting complex disease traits. Hum Mol Genet 2007; 16: 174-82.
2. Klein ML, Mauldin WM, Stoumbos VD. Heredity and age-related macular degeneration. Observations in monozygotic twins. Arch Ophthalmol. 1994; 112: 932-7.
3. Meyers SM, Greene T, Gutman FA. A twin study of age-related macular degeneration. Am J Ophthalmol. 1995; 120: 757-66.
4. Heiba IM, Elston RC, Klein BE, et al. Sibling correlations and segregation analysis of age-related maculopathy: The Beaver Dam Eye Study. Genet Epidemiol. 1994; 11: 51-67.
5. Klaver CC, Wolfs RC, Assink JJ, et al. Genetic risk of age-related maculopathy. Population-based familial aggregation study. Arch Ophthalmol. 1998; 116: 1646-51.
6. Seddon JM, Ajani UA, Mitchell BD. Familial aggregation of age-related maculopathy. Am J Ophthalmol. 1997; 123: 199-206.
7. Klein RJ, Zeiss C, Chew EY, et al. Complement Factor H Polymorphism in Age-Related Macular Degeneration. Science 2005; 308: 385-389.
8. Seddon JM, Reynolds R, Maller J, Fagerness JA, Daly MJ, Rosner B. Prediction model for prevalence and incidence of advanced age-related macular degeneration based on genetic, demographic, and environmental variables. Invest Ophthalmol Vis Sci 2009; 50 (65): 2044-53.
9. www.macularisk.com/en/physicians/order.html (accessed Dec. 14th , 2010)
Saturday, December 11, 2010
The link Between Age-Related Macular Degeneration and Cardiovascular Disease
by:Johns Hopkins Health Alert
Several studies have found that people with age-related macular degeneration (AMD) are more likely to have heart disease than those without age-related macular degeneration. A U.S. Medicare study, for example, found that elderly people with age-related macular degeneration were 20% more likely to have a heart attack than their counterparts who didn't have age-related macular degeneration. And a large Australian study, reported in the British Journal of Ophthalmology, suggests that age-related macular degeneration increases the risk of dying from coronary heart disease or stroke.
The researchers used data from nearly 3,000 participants, age 49 and older, in the Blue Mountains Eye Study -- none with a history of coronary heart disease or stroke at enrollment. They found that people younger than age 75 who had early signs of age-related macular degeneration at the study's start were twice as likely to die of coronary heart disease as their counterparts who did not have early signs. However, there was no increased risk of dying of a stroke in this group.
People with late age-related macular degeneration at the beginning of the study who were under age 75 had five times the risk of dying of coronary heart disease and 10 times the risk of dying of a stroke. The link between late age-related macular degeneration and risk of death from cardiovascular disease should be interpreted cautiously, warn the researchers, because there were so few people with late age-related macular degeneration at study entry.
Surprisingly, the researchers found no increased risk of death from cardiovascular disease among people over age 75 with age-related macular degeneration. They speculate that past 75, patients died of other serious health conditions that overshadowed the connection.
Take-away message: What's behind the link between age-related macular degeneration and cardiovascular disease? Some researchers suspect that age-related macular degeneration and cardiovascular diseases may share a common genesis: for instance, atherosclerosis, inflammation, and oxidative stress (the cell damage caused by free radicals) are known to affect both conditions. Another alternative: age-related macular degeneration may simply be a disease of aging.
Medical Disclaimer: This information is not intended to be substituted for the advice of a physician. Johns Hopkins Health Alerts
Several studies have found that people with age-related macular degeneration (AMD) are more likely to have heart disease than those without age-related macular degeneration. A U.S. Medicare study, for example, found that elderly people with age-related macular degeneration were 20% more likely to have a heart attack than their counterparts who didn't have age-related macular degeneration. And a large Australian study, reported in the British Journal of Ophthalmology, suggests that age-related macular degeneration increases the risk of dying from coronary heart disease or stroke.
The researchers used data from nearly 3,000 participants, age 49 and older, in the Blue Mountains Eye Study -- none with a history of coronary heart disease or stroke at enrollment. They found that people younger than age 75 who had early signs of age-related macular degeneration at the study's start were twice as likely to die of coronary heart disease as their counterparts who did not have early signs. However, there was no increased risk of dying of a stroke in this group.
People with late age-related macular degeneration at the beginning of the study who were under age 75 had five times the risk of dying of coronary heart disease and 10 times the risk of dying of a stroke. The link between late age-related macular degeneration and risk of death from cardiovascular disease should be interpreted cautiously, warn the researchers, because there were so few people with late age-related macular degeneration at study entry.
Surprisingly, the researchers found no increased risk of death from cardiovascular disease among people over age 75 with age-related macular degeneration. They speculate that past 75, patients died of other serious health conditions that overshadowed the connection.
Take-away message: What's behind the link between age-related macular degeneration and cardiovascular disease? Some researchers suspect that age-related macular degeneration and cardiovascular diseases may share a common genesis: for instance, atherosclerosis, inflammation, and oxidative stress (the cell damage caused by free radicals) are known to affect both conditions. Another alternative: age-related macular degeneration may simply be a disease of aging.
Medical Disclaimer: This information is not intended to be substituted for the advice of a physician. Johns Hopkins Health Alerts
Tuesday, December 7, 2010
SiemCells, Inc. Expands SC Proven(R) Product Portfolio With launch of Proprietary Human Cell Detection Antibodies
Posted by: StemCells,Inc.
StemCells, Inc. (Nasdaq: STEM | PowerRating) announced today the launch of STEM101(TM), STEM121(TM) and STEM123(TM), three new antibody reagents that significantly improve the visualization of human cells, including human stem cells and their progeny. These high potency antibodies are the latest additions to the Company's growing SC Proven(R) portfolio of research products, and provide powerful, cost-effective tools for the detection, tracking and characterization of human cells both in vitro and when transplanted into animal models of human diseases.
"The commercial launch of these proprietary antibodies demonstrates our ongoing commitment to broaden our portfolio of innovative research products and to take advantage of the growing market for research-grade cells, media and reagents," said Stewart Craig, Senior Vice President, Development and Operations at StemCells, Inc. "Their utility has been proven by our scientists and by independent academic collaborators in the conduct of their research and development activities. These antibodies have also become the cornerstone of our extensive preclinical studies, which have allowed us to successfully advance our stem cell therapeutic candidates into multiple clinical trials. There is considerable demand for these reagents, so we are pleased to now make them available to the scientific community at large."
STEM101, STEM121 and STEM123 are human-specific mouse monoclonal antibodies that have been extensively used to detect the engraftment, migration and differentiation of human neural stem cells and human liver engrafting cells (hLEC(TM)) transplanted into rodents.1,2,3,4,5 These antibodies can be used for immunohistochemistry and immunofluorescence applications such as:
-- Quantifying the location and number of engrafted cells
-- Tracking the migration pattern of engrafted cells
-- Determining the nature of engrafted cells
-- Identifying specific differentiated human-derived cells such as
astrocytes
STEM101 recognizes the Ku80 protein found in human nuclei, STEM121 recognizes a cytoplasmic protein of human cells, and STEM123 recognizes human glial fibrillary acidic protein (GFAP).
About SC Proven Products
The SC Proven product portfolio comprises a range of specialty cell culture products that enable the standardized and reproducible production and propagation of highly purified stem cells and their differentiated progeny, as well as reagents for cell detection, isolation and characterization.
References
-- Kelly S, et al. Transplanted human fetal neural stem cells survive,
migrate, and differentiate in ischemic rat cerebral cortex. PNAS (2004)
101:11839-11844
-- Cummings B.J., et al. Human neural stem cells differentiate and promote
locomotor recovery in spinal cord-injured mice. PNAS (2005) 102:
14069-14074
-- Tamaki S.J., et al., Neuroprotection of Host Cells by Human Central
Nervous System Stem Cells in a Mouse Model of Infantile Neuronal Ceroid
Lipofuscinosis. Cell Stem Cell (2009) 5:310-319
-- Kallur T., et al. Human Fetal Cortical and Striatal Neural Stem Cells
Generate Region-Specific Neurons In Vitro and Differentiate Extensively
to Neurons After Intrastriatal Transplantation in Neonatal Rats. J
Neurosci Res. (2006) 84:1630-1644
-- Salazar D.L., et al., Human Neural Stem Cells Differentiate and Promote
Locomotor Recovery in an Early Chronic Spinal Cord Injury NOD-scid Mouse
Model. PLoS ONE (2010) 5: e12272
About StemCells, Inc.
StemCells, Inc. is engaged in the research, development, and commercialization of cell-based therapeutics and tools for use in stem cell-based research and drug discovery. In its therapeutic product development programs, StemCells is targeting disorders of the central nervous system and the liver. StemCells' lead product candidate, HuCNS-SC(R) cells (purified human neural stem cells), is currently in clinical development for the treatment of two fatal neurodegenerative disorders in children, and in preclinical development for spinal cord injury and retinal disorders such as age-related macular degeneration. StemCells also markets research products, including media and reagents, under the SC Proven(R)brand, and is developing stem cell-based assay platforms for use in pharmaceutical research, drug discovery and drug development. Further information about StemCells is available at www.stemcellsinc.com.
The StemCells, Inc. logo is available at http://www.globenewswire.com/newsroom/prs/?pkgid=7014
Apart from statements of historical fact, the text of this press release constitutes forward-looking statements within the meaning of the U.S. securities laws, and is subject to the safe harbors created therein. These statements include, but are not limited to, statements regarding the ability of STEM101, STEM121 and STEM123 to enable and improve the visualization, detection, tracking and characterization of human cells both in vitro and when transplanted into animal models of human diseases; the clinical development of the Company's HuCNS-SC cells; the prospects for the Company to pursue non-therapeutic applications of its cell-based technologies; and the future business operations of the Company. These forward-looking statements speak only as of the date of this news release. The Company does not undertake to update any of these forward-looking statements to reflect events or circumstances that occur after the date hereof. Such statements reflect management's current views and are based on certain assumptions that may or may not ultimately prove valid. The Company's actual results may vary materially from those contemplated in such forward-looking statements due to risks and uncertainties to which the Company is subject, including those described under the heading "Risk Factors" in the Company's Annual Report
on Form 10-K for the year ended December 31, 2009, and in its subsequent reports on Form 10-Q and Form 8-K.
StemCells, Inc. (Nasdaq: STEM | PowerRating) announced today the launch of STEM101(TM), STEM121(TM) and STEM123(TM), three new antibody reagents that significantly improve the visualization of human cells, including human stem cells and their progeny. These high potency antibodies are the latest additions to the Company's growing SC Proven(R) portfolio of research products, and provide powerful, cost-effective tools for the detection, tracking and characterization of human cells both in vitro and when transplanted into animal models of human diseases.
"The commercial launch of these proprietary antibodies demonstrates our ongoing commitment to broaden our portfolio of innovative research products and to take advantage of the growing market for research-grade cells, media and reagents," said Stewart Craig, Senior Vice President, Development and Operations at StemCells, Inc. "Their utility has been proven by our scientists and by independent academic collaborators in the conduct of their research and development activities. These antibodies have also become the cornerstone of our extensive preclinical studies, which have allowed us to successfully advance our stem cell therapeutic candidates into multiple clinical trials. There is considerable demand for these reagents, so we are pleased to now make them available to the scientific community at large."
STEM101, STEM121 and STEM123 are human-specific mouse monoclonal antibodies that have been extensively used to detect the engraftment, migration and differentiation of human neural stem cells and human liver engrafting cells (hLEC(TM)) transplanted into rodents.1,2,3,4,5 These antibodies can be used for immunohistochemistry and immunofluorescence applications such as:
-- Quantifying the location and number of engrafted cells
-- Tracking the migration pattern of engrafted cells
-- Determining the nature of engrafted cells
-- Identifying specific differentiated human-derived cells such as
astrocytes
STEM101 recognizes the Ku80 protein found in human nuclei, STEM121 recognizes a cytoplasmic protein of human cells, and STEM123 recognizes human glial fibrillary acidic protein (GFAP).
About SC Proven Products
The SC Proven product portfolio comprises a range of specialty cell culture products that enable the standardized and reproducible production and propagation of highly purified stem cells and their differentiated progeny, as well as reagents for cell detection, isolation and characterization.
References
-- Kelly S, et al. Transplanted human fetal neural stem cells survive,
migrate, and differentiate in ischemic rat cerebral cortex. PNAS (2004)
101:11839-11844
-- Cummings B.J., et al. Human neural stem cells differentiate and promote
locomotor recovery in spinal cord-injured mice. PNAS (2005) 102:
14069-14074
-- Tamaki S.J., et al., Neuroprotection of Host Cells by Human Central
Nervous System Stem Cells in a Mouse Model of Infantile Neuronal Ceroid
Lipofuscinosis. Cell Stem Cell (2009) 5:310-319
-- Kallur T., et al. Human Fetal Cortical and Striatal Neural Stem Cells
Generate Region-Specific Neurons In Vitro and Differentiate Extensively
to Neurons After Intrastriatal Transplantation in Neonatal Rats. J
Neurosci Res. (2006) 84:1630-1644
-- Salazar D.L., et al., Human Neural Stem Cells Differentiate and Promote
Locomotor Recovery in an Early Chronic Spinal Cord Injury NOD-scid Mouse
Model. PLoS ONE (2010) 5: e12272
About StemCells, Inc.
StemCells, Inc. is engaged in the research, development, and commercialization of cell-based therapeutics and tools for use in stem cell-based research and drug discovery. In its therapeutic product development programs, StemCells is targeting disorders of the central nervous system and the liver. StemCells' lead product candidate, HuCNS-SC(R) cells (purified human neural stem cells), is currently in clinical development for the treatment of two fatal neurodegenerative disorders in children, and in preclinical development for spinal cord injury and retinal disorders such as age-related macular degeneration. StemCells also markets research products, including media and reagents, under the SC Proven(R)brand, and is developing stem cell-based assay platforms for use in pharmaceutical research, drug discovery and drug development. Further information about StemCells is available at www.stemcellsinc.com.
The StemCells, Inc. logo is available at http://www.globenewswire.com/newsroom/prs/?pkgid=7014
Apart from statements of historical fact, the text of this press release constitutes forward-looking statements within the meaning of the U.S. securities laws, and is subject to the safe harbors created therein. These statements include, but are not limited to, statements regarding the ability of STEM101, STEM121 and STEM123 to enable and improve the visualization, detection, tracking and characterization of human cells both in vitro and when transplanted into animal models of human diseases; the clinical development of the Company's HuCNS-SC cells; the prospects for the Company to pursue non-therapeutic applications of its cell-based technologies; and the future business operations of the Company. These forward-looking statements speak only as of the date of this news release. The Company does not undertake to update any of these forward-looking statements to reflect events or circumstances that occur after the date hereof. Such statements reflect management's current views and are based on certain assumptions that may or may not ultimately prove valid. The Company's actual results may vary materially from those contemplated in such forward-looking statements due to risks and uncertainties to which the Company is subject, including those described under the heading "Risk Factors" in the Company's Annual Report
on Form 10-K for the year ended December 31, 2009, and in its subsequent reports on Form 10-Q and Form 8-K.
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