Plant growth retardants Alar (dimethylhydrazide of succinic acid) and its structural analogue MEIA (β-monomethyl ester of itaconic acid) at a concentration 2000mg/l sprayed at the fourth true leaf stage of tobacco seedlings caused identical retardation in stem growth from the second till the tenth day after treatment. Soluble peroxidase activity in stems of the treated plants increased on the s...

OBJECTIVE To define baseline aesthetic dimensions of the nasal aperture in 3 different racial groups. METHODS Healthy volunteers from 3 different racial groups (15 white, 15 Chinese, and 15 Indian men) were enrolled in the study at the Department of Otolaryngology, University of Dundee, Dundee, Scotland. Those with a history of nasal or facial surgery or trauma were excluded from the study. I...

OBJECTIVE To determine the usefulness of a triple-flap technique for repair of large zone 2 Mohs defects of the nose. METHODS The triple-flap technique was performed on 10 fresh adult cadaver heads that had been injected intravascularly with blue dye. Two distances were measured and recorded: (1) the distance from the most lateral portion of the alar crease to the transverse facial artery; an...

The Olig3 gene encodes a bHLH factor that is expressed in the ventricular zone of the dorsal alar plate of the hindbrain. We found that the Olig3(+) progenitor domain encompassed subdomains that co-expressed Math1, Ngn1, Mash1 and Ptf1a. Olig3(+) cells give rise to neuronal types in the dorsal alar plate that we denote as class A neurons. We used genetic lineage tracing to demonstrate that clas...

OBJECTIVE To evaluate changes in the soft tissue width of the nose induced by rapid maxillary expansion (RME). Data on greater alar cartilage (GAC) and alar base (AB) widths were compared with a normative sample within the same age range. MATERIALS AND METHODS This prospective study consisted of an RME sample of 79 patients treated with an RME protocol. Mean age at the start of RME treatment ...

PURPOSE Asymmetric nostrils that develop after rhinoplasty may result in nasal tip deformity and result in patient dissatisfaction. No systemic study on methods for the correction of transformed nostrils has been reported. In the current study, asymmetric nostrils were classified according to the degree of asymmetry and the authors' experiences on the correction of nostril deformities are descr...

Nasal tip surgery has become significantly more complex since the introduction of tip grafting and the many suture designs that followed the resurgence of open rhinoplasty. Independent of the surgeon's technical approach, however, is the need to identify the critical anatomical characteristics that will make nasal tip surgery successful. It is the author's contention that only two such features...

Many of the genes involved in brain patterning during development are highly conserved in vertebrates and similarities in their expression patterns help to recognize homologous cell types or brain regions. Among these genes, Pax6 and Pax7 are expressed in regionally restricted patterns in the brain and are essential for its development. In the present immunohistochemical study we analyzed the d...

In the study of central nervous system morphogenesis, the identification of new molecular markers allows us to identify domains along the antero-posterior and dorso-ventral (DV) axes. In the past years, the alar and basal plates of the midbrain have been divided into different domains. The precise location of the alar-basal boundary is still under discussion. We have identified Barhl1, Nhlh1 an...

OBJECTIVE To review the indications for, surgical techniques of, and results of vertical lobule division (VLD) of the alar cartilages. DESIGN Prospective study of patients assigned to undergo variations of VLD of the lower lateral cartilages. SETTING Private facial plastic surgery practice in a major university teaching hospital. PATIENTS Twenty-four patients who underwent variations of V...