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  • A100-AG-11983

    Document Type:
    Certificate of Quality
    Lot Number:
    AG-11983
    Product Catalog Number:
    A100
    Product Catalog Name:
    NovaSeptum Crimping tool

  • A frameshift deletion in peripherin gene associated with amyotrophic lateral sclerosis. 15322088

    Peripherin is a neuronal intermediate filament associated with inclusion bodies in motor neurons of patients with amyotrophic lateral sclerosis (ALS). A possible peripherin involvement in ALS pathogenesis has been suggested based on studies with transgenic mouse overexpressors and with a toxic splicing variant of the mouse peripherin gene. However, the existence of peripherin gene mutations in human ALS has not yet been documented. Therefore, we screened for sequence variants of the peripherin gene (PRPH) in a cohort of ALS patients including familial and sporadic cases. We identified 18 polymorphic variants of PRPH detected in both ALS and age-matched control populations. Two additional PRPH variants were discovered in ALS cases but not in 380 control individuals. One variant consisted of a nucleotide insertion in intron 8 (PRPH(IVS8)(-36insA)), whereas the other one consisted of a 1-bp deletion within exon 1 (PRPH(228delC)), predicting a truncated peripherin species of 85 amino acids. Remarkably, expression of this frameshift peripherin mutant in SW13 cells resulted in disruption of neurofilament network assembly. These results suggest that PRPH mutations may be responsible for a small percentage of ALS, cases and they provide further support of the view that neurofilament disorganization may contribute to pathogenesis.
    Document Type:
    Reference
    Product Catalog Number:
    Multiple
    Product Catalog Name:
    Multiple

  • Timing of neuronal intermediate filament proteins expression in the mouse vomeronasal organ during pre- and postnatal development. An immunohistochemical study. 16179384

    Several types of intermediate filament proteins are expressed in developing and mature neurons; they cooperate with other cytoskeletal components to sustain neuronal function from early neurogenesis onward. In this work the timing of expression of nestin, peripherin, internexin, and the neuronal intermediate filament triplet [polypeptide subunits of low (NF-L), medium (NF-M), and high (NF-H) molecular weight] was investigated in the developing fetal and postnatal mouse vomeronasal organ (VNO) by means of immunohistochemistry. The results show that the sequence of expression of intermediate filament proteins is internexin, nestin, and NF-M in the developing vomeronasal sensory epithelium; internexin, peripherin, and NF-M in the developing vomeronasal nerve; and nestin, internexin and peripherin, NF-L, and NF-M in the nerve supply to accessory structures of the VNO. At sexual maturity (2 months) NF-M is only expressed in vomeronasal neurons and NF-M, NF-L and peripherin are expressed in extrinsic nerves supplying VNO structures. The differential distribution of intermediate filament proteins in the vomeronasal sensory epithelium and nerve is discussed in terms of the cell types present therein. It is concluded that several intermediate filament proteins are sequentially expressed during intrauterine development of the VNO neural structures in a different pattern according to the different components of the VNO.
    Document Type:
    Reference
    Product Catalog Number:
    AB1530
    Product Catalog Name:
    Anti-Peripherin Antibody
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