Edit concept Question Editor Create issue ticket

Y-Linked Retinitis pigmentosa



  • (c) an amino sugar present in peptidoglycans. (d) a disaccharide unit present in cellulose. 3. Distinguish between amilose and amilopectin. 4. Give the strtuctures and properties of a glycogen molecule. 5.[books.google.com]
  • Interpolating R objects into R code strings ¶ Against the first impression one may get from the title of this section, simple and handy features of rpy2 are presented here.[rpy2.readthedocs.io]
  • Compared to AR forms, the AD forms of the disease tend to be more mild, progress more slowly, and present later in life. Patients present with reduced visual acuity and loss of color vision in late adulthood and progress to legal blindness.[retinalphysician.com]
  • "Dominant" means that the gene change must be present on only one of the two copies of the gene in order to cause in the condition.[thinkgenetic.com]
  • Acknowledgments We are grateful to all family members for their participation in the present study.[bioscirep.org]
  • The helix-coil Transition When double stranded DNA molecules are subjected to extremes of temperature or pH, the hydrogen bonds in the double helix are ruptured and the DNA collapses into two single-stranded molecules. ‏[books.google.com]
  • Simple example: letters robjects . r [ 'letters' ] rcode 'paste( %s , collapse "-")' % ( letters . r_repr ()) res robjects . r ( rcode ) print ( res ) "a-b-c-d-e-f-g-h-i-j-k-l-m-n-o-p-q-r-s-t-u-v-w-x-y-z" R vectors ¶ In R , data are mostly represented[rpy2.readthedocs.io]
  • Bunker Roy: Learning from a barefoot movement In Rajasthan, India, an extraordinary school teaches rural women and men -- many of them illiterate -- to become solar engineers, artisans, dentists and doctors in their own villages.[ted.com]


  • Currently, there are no effective treatments for this disease.[markets.businessinsider.com]
  • Last but not least, give medicine to stimulate the other treatments and help balance out the bad side effects that they may cause (retinitis-pigmentosa.com). Information Taken From:[geneticinheritance.blogspot.com]
  • Pedigree: X-linked recessive, carrier mother X-linked recessive, father affected Treatment Treatment Options: No treatment has been reported.[disorders.eyes.arizona.edu]
  • Management and treatment Treatment is primarily aimed at slowing progression of the disease. Vitamin A palmitate and lutein-DHA may be provided as protecting antioxydants.[orpha.net]
  • Acetazolamide in the treatment of X-linked retinoschisis maculopathy. Arch Ophthalmol. 2007;125:571-573. Grover S, Apushkin MA, Fishman GA. Topical dorzolamide for the treatment of cystoid macular edema in patients with retinitis pigmentosa.[rarediseases.org]


  • Identifying the inheritance pattern involved can help to determine the prognosis, both for the patient and the rest of his or her family.[retinalphysician.com]
  • Prognosis Except for mild cases or sectorial RP, most cases progress to legal blindness (visual acuity 1/20 and visual field 5 degrees). The documents contained in this web site are presented for information purposes only.[orpha.net]
  • Some investigators have found a general correlation between age-related visual acuity and mode of inheritance, suggesting that autosomal dominant retinitis pigmentosa has the best prognosis, whereas males with X-linked forms have the worst prognosis and[bredagenetics.com]
  • The wide range of disease severity and the overlapping of many signs can make pedigree construction and the determination of recurrence risks and prognosis challenging. The only recourse may be genotyping.[disorders.eyes.arizona.edu]
  • According to some studies, individuals with adRP have the best prognosis, with the majority of those younger than age 30 years having a visual acuity of 20/30 or better.[institut-vision.org]


  • Etiology More than 3,000 mutations in over 57 different genes or loci are currently known to cause non-syndromic RP.[orpha.net]
  • Etiology Causatives genes RP is characterized by enormous genetic heterogeneity. At least 45 different genes and loci have been identified to cause nonsyndromic RP so far.[institut-vision.org]


  • Summary Epidemiology Prevalence of RP is reported to be 1/3,000 to 1/5,000. No ethnic specificities have been reported although founder effects are possible. Clinical description Retinitis pigmentosa is slowly progressive but relentless.[orpha.net]
  • Isolated cases, with no family history, also commonly occur Epidemiology Prevalence in all ages is approximately 1 in 4,000 [ 1 ] . Three types have been found determined by age of onset.[patient.info]
  • Genetics and epidemiology of sickle cell anaemia in India. ICMR Bull 1988;18:87-90. 5. Mckusick VA. 270100 Mendelian Inheritance in Man. Baltimore: The Johns Hopkins University Press, 1992. 6. Donahue SP, Wenger SL, Steele MW, Gorin MB.[ijo.in]
  • Epidemiology of retinitis pigmentosa in Denmark. Acta Ophthalmol Scand Suppl, (2002), pp. 1-34 [5.] E.L. Berson. Retinitis pigmentosa. The Friedenwald Lecture. Invest Ophthalmol Vis Sci, 34 (1993), pp. 1659-1676 [6.] M. Haim, N.V. Holm, T.[journalofoptometry.org]
  • Chizzolini M, Galan A, Milan E, Sebastiani A, Costagliola C, et al. (2011) Good epidemiologic practice in retinitis pigmentosa: from phenotyping to biobanking. Curr Genomics 12: 260–6. View Article Google Scholar 6.[journals.plos.org]
Sex distribution
Age distribution


  • PMID: 26962691 A challenge to the striking genotypic heterogeneity of retinitis pigmentosa: a better understanding of the pathophysiology using the newest genetic strategies. Sorrentino FS, Gallenga CE, Bonifazzi C, Perri P.[bredagenetics.com]
  • Bardet-Biedl syndrome: Genetics, molecular pathophysiology, and disease management. Indian J Ophthalmol. 2016;64(9):620-7. Radtke ND, Aramant RB, Seiler MJ, Petry HM, Pidwell D.[rarediseases.org]


  • Foundation Fighting Blindness homepage The urgent mission of the Foundation Fighting Blindness is to drive the research that will provide preventions, treatments and cures for people affected by retinitis pigmentosa, age-related macular degeneration,[blindness.org]
  • ., and Research to prevent Blindness, New York. The research was carried out within research organizations sponsored by the RP Foundation. A.S. is recipient of a Research to Prevent Blindness Lew R.[djo.harvard.edu]
  • Opinions on orphan medicinal product designations are based on the following three criteria: the seriousness of the condition; the existence of alternative methods of diagnosis, prevention or treatment; either the rarity of the condition (affecting not[docmh.com]
  • Prevention Some assessment of the risk of having an affected child may be made by genetic counselling. There may be a future role for gene therapy [ 16 ] .[patient.info]
  • Cumulatively, our data indicate that the c.1537G A mutation prevents the CNGA1 protein from being transported to the membrane, where it is functional in a normal eye.[bioscirep.org]

Ask Question

5000 Characters left Format the text using: # Heading, **bold**, _italic_. HTML code is not allowed.
By publishing this question you agree to the TOS and Privacy policy.
• Use a precise title for your question.
• Ask a specific question and provide age, sex, symptoms, type and duration of treatment.
• Respect your own and other people's privacy, never post full names or contact information.
• Inappropriate questions will be deleted.
• In urgent cases contact a physician, visit a hospital or call an emergency service!