Articles Related to SUDI
Investigation of Neuroprotective Effects of Ripasudil in Mechanic Optic Nerve Injury Model
Purpose: We aimed to create mechanic optic nerve injury model in rats and investigate the neuroprotective effects of
ripasudil on retinal ganglion cells.
Study Design: Experimental study
Methods: Mechanic optic nerve injury model was created in the right eyes of male Wistar rats (n=15). Rats were divided
into three groups: glaucoma model with sham treatment (group1) and 20 µM intravitreal ripasudil treatment (group 2)
and 50 µM intravitreal ripasudil treatment (group 3). Treatment was applied intravitreally and rats were sacrificed at the
end of 4 weeks. Glial fibrillary acidic protein (GFAP), Brn-3a antibody,anti- Iba1 was examined by immunohistochemistry.
Results: The number of Brn-3a positive RGC in the mechanical optic nerve injury model was 5.33 ± 2.08 (min: 3, max: 7)
in sham group, 10.25 ± 2.63 (min: 8, max: 14) in 20 µM group and 16.75 ± 5.43 (min:9, max: 21) in 50 µM group (p <0.05).
GFAP positive RGC counts were recorded as 24.33 ± 2.08 (min: 22, max: 26) in sham group, 16.75 ± 1.70 (min: 15, max:
19) in 20 µM group and 13.00 ± 4.08 (min:10 , max: 19) in 50 µM group (p <0.05). Ripasudil treatment also decreased Iba1
expression in the retina of mechanic optic nerve injury groups. In addition, ripasudil treatment prevented apoptotic cell
death by increasing Bcl-xL protein expression and preserved Tfam protein expression in the retina.
Conclusions: Our experimental study has shown that ripasudil is neuropreotective in mechanical optic nerve injury
model.
Epidemiology of Sudden Unexpected Death in Infancy: Evidence from the London Metropolitan Police Project Indigo Investigation
The London Metropolitan Police in collaboration with medical personnel, study all sudden unexpected death in infancy (SUDI) <2 years in their jurisdiction, to identify suspicious cases for further investigation. The 2005-2010 Project Indigo includes extensive data on all such non-suspicious cases. Deidentified data on age and gender of 477 infants dying a natural unexpected-sudden death in London were gathered for statistical analyses, for comparison to our published a priori probability models that predict their distributions without need of superfluous information, such as race, autopsy findings, or SUDI risk factors. The total observed male fraction of 0.5639 for all these 477 Indigo cases (269 male) is predicted using a recessive X-linkage model for Sudden Infant Death Syndrome (SIDS) as 0.5676. The transformed age distribution of all 477 Indigo cases of different causes of death is modeled by a single four-parameter lognormal distribution, y = Log [(d + 9.44)/(1254 – d)] = μ + σ z, where d is Indigo age in calendar days of life (d = DOD – DOB ≥ 0), median μ = -1.085, slope σ = 0.543, and z is a standard normal deviate.