Trastorno específico del lenguaje: subtipos de una patología compleja / Specific language impairment: subtypes of a complex disorder

Existen distintas propuestas sobre marcadores psicolingüísticos y sobre taxonomías del trastorno específico del lenguaje (TEL). Este trabajo presenta los resultados obtenidos en 8 tareas psicolingüísticas por 2 grupos de niños: 31 niños con TEL (GTEL) y 31 niños igualados en edad cronológica (GC). Las tareas han sido elaboradas ad hoc para valorar los marcadores psicolingüísticos en las 4 áreas clásicas: fonología, morfosintaxis, semántica y pragmática. En primer lugar, se comprueba que los niños del GTEL rinden significativamente peor que los niños del GC en las 8 tareas. En segundo lugar, un análisis de conglomerados K-medias clasifica a los 31 sujetos del grupo TEL en 4 conglomerados. En tercer lugar, un análisis discriminante comprueba si la clasificación clínica hecha a priori se mantiene tras los resultados del estudio. Se presenta el perfil de los conglomerados y se discuten sus características respecto a los subtipos de la taxonomía clínica de Rapin y Allen. Finalmente, se analizan las similitudes y diferencias entre ambas tipologías. Los resultados obtenidos ayudan a esclarecer los marcadores psicolingüísticos del TEL en niños de habla española y refuerzan la utilidad clínica de su clasificación en subtipos y la vigencia de la taxonomía de Rapin y Allen (AU)

There are various proposals for psycholinguistic markers and for taxonomies of specific language impairment (SLI). This study presents the results obtained in eight psycholinguistic tasks by two groups of Spanish-speaking children: 31 children with SLI (SLI) and 31 children matched for chronological age (CA). The tasks were developed ad hoc to assess psycholinguistic markers in the four traditional areas: phonology, morphosyntax, semantics and pragmatics. Firstly, we found that SLI group scored significantly worse than CA group in the eight tasks. Secondly, a K-Means cluster analysis distinguished five clusters within the 31 subject of SLI group. Thirdly, a discriminant analysis checks whether an a priori clinical classification is maintained after the study results. We present the profile of these clusters and discuss their features regarding Rapin & Allen taxonomy clinical subtypes. Finally, the similarities and differences between the two classifications are analyzed. The results obtained in this work help shed light on the psycholinguistic markers of the Spanish-SLI and reinforce the clinical utility of its classification into subtypes and the validity of the Rapin & Allen taxonomy (AU)

Wound-healing effect of acupuncture for treating phonotraumatic vocal pathologies: A cytokine study.

OBJECTIVES/HYPOTHESIS: Acupuncture is a less-invasive procedure when compared with surgical treatment for benign vocal pathologies caused by vocal overuse. This study aimed to determine the wound-healing effect of acupuncture in treating phonotraumatic vocal fold lesions. STUDY DESIGN: Two-way, mixed-model, between- and within-subjects, prospective randomized, placebo-controlled, blinded group design. METHODS: Seventeen dysphonic individuals with vocal nodules were recruited from a university clinic in Hong Kong. Each participant was randomly assigned to receive one session of either genuine or sham acupuncture. The genuine acupuncture group (n = 9) received needles puncturing nine voice-related acupoints for 30 minutes, whereas the sham acupuncture group (n = 8) received blunted needles stimulating the skin surface of the nine acupoints for the same frequency and duration. Laryngeal secretions were suctioned from the surface of the vocal folds immediately before, immediately after, and 24 hours after the acupuncture. The protein concentration levels of wound-healing-related cytokines (interleukin [IL]-1ß and IL-10) in these secretion samples were measured. RESULTS: Following acupuncture, a significant increase in the anti-inflammatory cytokine IL-10 was found in the genuine acupuncture group (n = 9) but not in the sham acupuncture group (n = 8). CONCLUSIONS: The findings showed that acupuncture of voice-related acupoints facilitated an anti-inflammatory process in phonotraumatic vocal pathologies. This could be considered as supporting evidence to consider acupuncture as a less-invasive alternative option, when compared to surgery, for treating phonotraumatic vocal pathologies.

A preliminary study of the effect of acupuncture on emotional stress in female dysphonic speakers.

This study investigated the effect of acupuncture on emotional stress in subjects with phonotraumatic injuries. This study used a prospective randomized, placebo-controlled group design. The independent variable included the types of acupuncture (genuine vs sham) and the sampling time points (two pre-needling, one in the midway of needling, and two post-needling measurements). The dependent variable was the concentration of cortisol obtained from subjects' saliva samples. Eighteen female subjects with phonotraumatic injuries were randomized to receive either genuine or sham acupuncture at the same acupoints during a 30-minute session. Saliva samples were collected from each subject at 10 minutes pre-needling, immediately pre-needling, mid-needling, immediately postneedling, and 10 minutes post-needling time points. The findings suggested that the subjects' salivary cortisol concentration did not reduce after acupuncture, and thus, acupuncture may not be able to reduce the emotional stress level in female dysphonic speakers.