| 1. |
- Aoki, Sayaka, et al.
(författare)
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Development of a new screening tool for neuromotor development in children aged two - the neuromotor 5min exam 2-year-old version (N5E2).
- 2018
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Ingår i: Brain & development. - : Elsevier BV. - 1872-7131 .- 0387-7604. ; 40:6, s. 445-451
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Tidskriftsartikel (refereegranskat)abstract
- As a new screening tool for neuromotor development in children aged two, we developed the Neuromotor 5min Exam 2-year-old version (N5E2), which can be easily administered by pediatricians or primary care physicians. In this study, as an initial attempt to examine the utility of the N5E2, the inter-rater reliability on scoring for the individual items in this scale was assessed.The participants of the study were 29 children (aged 1-5years, mean age=2.79) diagnosed with a variety of neuromotor/developmental disorders/high-risk conditions. Inter-rater reliability was examined on the following 11 items in the N5E2: (1) Retrieving a rolling ball, (2) Gait, (3) Toe-walking, (4) Asymmetries of posture and/or movement, (5) Age at unsupported walking, (6) Speaking in two-word understandable sentences, (7) Hypotonus, (8) Hypertonus, (9) Eye movement, (10) Vision problem, (11) Hearing problem. The items were administered to children by two pediatricians with different expertise and clinical experience, separately.The results showed that among the eleven items in the N5E2 examined, a high level of agreement (κ≥0.60) was found on 4 items, and a moderate level of agreement (0.40≤κ<0.60) was found on 5 items. The level of agreement somewhat improved after the dichotomization of the score; using this format, a high level of rater agreement (κ≥0.60) was found on 6 out of 11 items. The analyses also revealed high inter-rater reliability on the sum score of the 11 items (r=0.84).The results suggest the possibility that this brief screening tool could be feasible in settings where clinicians' experience varies, based on its inter-rater reliability on individual items between the clinicians with different expertise and amount of clinical experiences.
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| 2. |
- Flex, Elisabetta, et al.
(författare)
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Activating mutations in RRAS underlie a phenotype within the RASopathy spectrum and contribute to leukaemogenesis
- 2014
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Ingår i: Human Molecular Genetics. - : Oxford University Press (OUP). - 0964-6906 .- 1460-2083. ; 23:16, s. 4315-4327
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Tidskriftsartikel (refereegranskat)abstract
- RASopathies, a family of disorders characterized by cardiac defects, defective growth, facial dysmorphism, variable cognitive deficits and predisposition to certain malignancies, are caused by constitutional dysregulation of RAS signalling predominantly through the RAF/MEK/ERK (MAPK) cascade. We report on two germline mutations (p.Gly39dup and p.Val55Met) in RRAS, a gene encoding a small monomeric GTPase controlling cell adhesion, spreading and migration, underlying a rare (2 subjects among 504 individuals analysed) and variable phenotype with features partially overlapping Noonan syndrome, the most common RASopathy. We also identified somatic RRAS mutations (p.Gly39dup and p.Gln87Leu) in 2 of 110 cases of non-syndromic juvenile myelomonocytic leukaemia, a childhood myeloproliferative/myelodysplastic disease caused by upregulated RAS signalling, defining an atypical form of this haematological disorder rapidly progressing to acute myeloid leukaemia. Two of the three identified mutations affected known oncogenic hotspots of RAS genes and conferred variably enhanced RRAS function and stimulus-dependent MAPK activation. Expression of an RRAS mutant homolog in Caenorhabditis elegans enhanced RAS signalling and engendered protruding vulva, a phenotype previously linked to the RASopathy-causing SHOC2(S2G) mutant. Overall, these findings provide evidence of a functional link between RRAS and MAPK signalling and reveal an unpredicted role of enhanced RRAS function in human disease.
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| 3. |
- Yamaguchi, Yoko, et al.
(författare)
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Targeting hepatocyte growth factor in epithelial-stromal interactions in an in vitro experimental model of human periodontitis
- 2021
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Ingår i: Odontology. - : Springer Nature. - 1618-1247 .- 1618-1255. ; 109:4, s. 912-920
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Tidskriftsartikel (refereegranskat)abstract
- Periodontitis is a chronic inflammatory disease leading to progressive connective tissue degradation and loss of the tooth-supporting bone. Clinical and experimental studies suggest that hepatocyte growth factor (HGF) is involved in the dysregulated fibroblast-epithelial cell interactions in periodontitis. The aim of this study was to explore effects of HGF to impact fibroblast-induced collagen degradation. A patient-derived experimental cell culture model of periodontitis was applied. Primary human epithelial cells and fibroblasts isolated from periodontitis-affected gingiva were co-cultured in a three-dimensional collagen gel. The effects of HGF neutralizing antibody on collagen gel degradation were tested and transcriptome analyses were performed. HGF neutralizing antibody attenuated collagen degradation and elicited expression changes of genes related to extracellular matrix (ECM) and cell adhesion, indicating that HGF signaling inhibition leads to extensive impact on cell-cell and cell-ECM interactions. Our study highlights a potential role of HGF in periodontitis. Antagonizing HGF signaling by a neutralizing antibody may represent a novel approach for periodontitis treatment.
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