after parkinsonism, dystonia is the movement disorder most commonly encountered in movement disorder clinics. it is defined as a syndrome of sustained muscle contractions, frequently causing twisting and repetitive movements or abnormal postures. dystonia is classified in three ways: age at onset, body distribution of abnormal movements, and etiology. the etiologic classification identifies fou...

The central hypothesis of the genotype–phenotype relationship is that phenotype a developing organism (i.e., its set observable attributes) depends on genome and environment. However, as we learn more about genetics biochemistry living systems, our understanding does not fully extend to complex multiscale nature how cells move, interact, organize; this gap in referred genotype-to-phenotype prob...

background dedifferentiation of chondrocytes remains a major problem for cartilage tissue engineering. chondrocytes loss differentiated phenotype in in vitro culture that is undesired for repair strategies. the chondrocyte is surrounded by a pericellular matrix (pcm), together forming the chondron. pcm has a positive effect on the maintenance of chondrocyte phenotype during culture in compariso...

Background: Association of Addison's disease with connective tissue diseases such as scleroderma and Sjogren have been rarely reported. Anti-centromere antibody (ACA) has been associated with exocrine gland dysfunction in anti-Ro, anti-La negative Sjogren’s syndrome and may be one of the causes of xerostomia in community. The purpose of this article was to introduce a rare case of scleroderma-S...

The topological viewpoint on spaces of phenotypes presented in Stadler et al. (J Theor Biol 213:241-274, 2001) is revisited, and a quantified version is proposed. While necessary probabilistic information can be encoded in a topological- like fashion, it turns out that it is not reflected adequately by the concept of continuity. We propose alternative models, but the behavior of maps make these...

background : turner syndrome (ts) is a sporadic disorder caused by the absence of all or some parts one x-chromosome with major developmental consequences such as short stature and ovarian failure etc. the minor manifestations of ts are cubitus valgus, micrognatism, high-arched palate, short and/or webbed neck, hypothyroidism, etc. different karyotype abnormalities may lead to different clinica...