The expansion of 300 CTG repeats in myotonic dystrophy transgenic mice does not induce sensory or motor neuropathy.

Although many studies have been carried out to verify the involvement of the peripheral nervous system (PNS) in dystrophia myotonica (DM1) patients, the results remain controversial. The generation of DM1 transgenic mice displaying the human DM1 phenotype provides a useful tool to investigate the type and incidence of structural abnormalities in the PNS. In the present study, the morphological and morphometric analysis of semi-thin sections of sciatic and sural nerves, lumbar dorsal root ganglia (DRG) and lumbar spinal cords revealed that in DM1 transgenic mice carrying 300 CTG repeats, there is no change in the number and diameter of myelinated axons compared to wild type. Only a non-significant reduction in the percentage of thin myelinated axons was detected in electron micrographs of ultra-thin sciatic nerve sections. Analysis of the number of neurons did not reveal a loss in number of either sensory neurons in the lumbar DRG or motor neurons in the lumbar spinal cord in these DM1 mice. Furthermore, in hind limb muscle sections, stained with a neurofilament antibody and alpha-bungarotoxin, the intramuscular axon arborization appeared normal in DM1 mice and undistinguishable from that in wild-type mice. Moreover, in DM1 mice, there was no irregularity in the structure or an increase in the endplate area. Also statistical analysis did not show an increase in endplate density or in the concentration of acetylcholine receptors. Altogether, these results suggest that 300 CTG repeats are not sufficient to induce axonopathy, demyelination or neuronopathies in this transgenic mouse model.

Motor Vehicle Accident Fatalities for the Week Ending, March 30, 2007

Record of the Fatalities for Motor Vehicle Accidents in Iowa per week.

Motor Vehicle Accident Fatalities for the Week Ending, March 23, 2007

Record of the Fatalities for Motor Vehicle Accidents in Iowa per week.

Motor Vehicle Accident Fatalities for the Week Ending, April 13, 2007

Record of the Fatalities for Motor Vehicle Accidents in Iowa per week.

Motor Vehicle Accident Fatalities for the Week Ending, April 27, 2007

Record of the Fatalities for Motor Vehicle Accidents in Iowa per week.

Motor Vehicle Accident Fatalities for the Week Ending, May 4, 2007

Record of the Fatalities for Motor Vehicle Accidents in Iowa per week.

Motor Vehicle Accident Fatalities for the Week Ending, May 11, 2007

Record of the Fatalities for Motor Vehicle Accidents in Iowa per week.

Motor Vehicle Accident Fatalities for the Week Ending, May 18, 2007

Record of the Fatalities for Motor Vehicle Accidents in Iowa per week.

Motor Vehicle Accident Fatalities for the Week Ending, May 25, 2007

Record of the Fatalities for Motor Vehicle Accidents in Iowa per week.

Motor Vehicle Accident Fatalities for the Week Ending, June 1, 2007

Record of the Fatalities for Motor Vehicle Accidents in Iowa per week.

Motor Vehicle Accident Fatalities for the Week Ending, June 8, 2007

Record of the Fatalities for Motor Vehicle Accidents in Iowa per week.

Motor Vehicle Accident Fatalities for the Week Ending, June 15, 2007

Record of the Fatalities for Motor Vehicle Accidents in Iowa per week.

Yhdysvaltain Presidentti Gerald R. Ford 18/11 1975

Kirje 18.11.1975

Quarterly Report of the Building Project for the Motor Vehicle Division

Pursuant to Section 1 of House File 466 of the 81st General Assembly, the Iowa Department of Transportation is required to make quarterly reports to the Legislative Council regarding the progress of the building project for the Motor Vehicle Division. During the quarter ending June 30, 2007, the project was delayed by two weeks. The Motor Vehicle Division moved into the new Ankeny facility on June 22 and was operational Monday, June 25. The driver's license stations reopened as scheduled Tuesday, June 26, at the Ankeny facility as well as the Oliver Plaza renewal location.

Motor Vehicle Accident Fatalities for the Week Ending, June 29, 2007

Record of the Fatalities for Motor Vehicle Accidents in Iowa per week.