Publications by authors named "Norihiro Ohba"

Background: Nasal alar deformity after cosmetic surgery, including nostril sill notching, alar flattening, and a shallow and indistinct alar-facial crease, commonly results from overresection. We developed revision methods for postoperative alar deformity, and applied them from 2016 to 2022 to the revision of 16 cases, consisting of 1 male and 15 female patients, with a median age of 28.5 years.

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Purpose: The need for customized implants has continuously increased, but patient-specific silicone implants are not yet commonly used in the plastic surgery market. We sought to validate the effectiveness of a 3D customized nasal implant design in terms of design and lead time compared with a manually customized implant by a surgeon.

Materials And Methods: Based on the computed tomography (CT) findings of 15 patients who planned rhinoplasty, a surgeon wrote order forms reflecting the surgical plan and subsequently designed implants manually using epoxy on a 3D printed skull.

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Background: Asian patients often desire reduction of the base and alar lobules of the Asian mesorrhine nose. Sill excision is commonly used, but may result in an angular or notched nostril rim.

Methods: We developed an internal method of alar base reduction involving triangle flaps for sill resection.

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There is no animal model of ganglion. We describe a simple and reproducible animal model of pseudocystic diseases. First, we experimented to establish a pseudocystic model.

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The aim of this study was to establish a novel adenovirus-based gene therapy system targeting astrocytoma. For this purpose, the Cre recombinase (Cre)/loxP system together with the astrocytoma-specific promoter for GFAP were used. We constructed an adenovirus (Ad) vector that expressed Cre under the control of the GFAP promoter (AxGFAPNCre), as well as another Ad vector containing a switching unit.

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Conclusions: With our method, general improvement is obtained as compared with traditional split-thickness skin grafting of the radial forearm flap donor site. As our method is simple and easy, the same results can be obtained wherever and by whomever it is performed.

Objective: The radial forearm flap is associated with complications of graft take and a poor aesthetic appearance despite its usefulness in reconstructing the oral cavity and oropharynx.

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Cyclin G1 (CG1) was identified as a p53-transactivated target gene, and yet its physiological and pathological roles have been unclear. Here, we demonstrate that CG1 is translocated from cytoplasm to the nuclei of neurons in response to variety of injuries. In the normal matured rodent brain, CG1 immunoreactivity was hardly observed; however, some brain injuries exhibited intense CG1 immunoreactivity in the nuclei of the damaged neurons.

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We performed a study of intralesional OK-432 injection therapy for the non-surgical treatment of ganglions. OK-432 is an agent made from penicillin-killed and lyophilized preparations of a low-virulence strain of group A streptococcus pyogenes, which has been developed as an immune-augmentation agent for cancer therapy. Derived from an extract of bacterial culture it, induces an immunological response and causes local inflammation and subsequent tissue shrinkage following intralesional injection.

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In patients who had undergone the first surgery for cleft lip and in whom the volume of tissue was smaller for the upper lip than for the lower lip, transfer of tissue from the lower lip using a full-length mucous flap allowed the tissue volume of the upper lip to be increased and external appearance of the lips to be improved. The subjects of this study were 6 patients who underwent this surgery between February and September 2001 and were followed for up to 3 years postoperatively. This surgery can be performed under topical anesthesia, without necessitating restriction on mouth opening and oral ingestion.

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Damage-induced neuronal endopeptidase (DINE) is a unique nerve-injury associated molecule, which was recently identified in a peripheral nerve injury model. The aim of this study was to determine the expression profiles and distribution of DINE in adult rats after middle cerebral artery (MCA) occlusion. Focal cerebral ischemia induced late-onset and prolonged expression of DINE mRNA in the peri-infarct cortex and specific nuclei of thalamus.

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This study was designed to evaluate whether the vesicular acetylcholine transporter (VAChT), which packages acetylcholine into synaptic vesicles, can be used as a marker for regenerating motor axon terminal. We examined motor axon regeneration in the tongue after hypoglossal nerve axotomy, using an anterograde tracer biotin-dextran (BD), retrograde tracer Fluoro-Gold (FG), electron microscopic (EM) observation, and VAChT immunocytochemistry. BD study demonstrated that outgrowth of thin regenerating axons into the frontal area of the tongue was firstly observed at 14 post-operative days, and presynaptic formation of neuromuscular junction (NMJ) was observed from 21 post-operative days.

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Transgenic mouse lines expressing the active form Akt gene under the control of the damage-induced neuronal endopeptidase (DINE) promoter were made from three different founder mice, and its neuroprotective potential against ischemic brain damage was investigated. Twenty-four hours after middle cerebral artery occlusion, two DINE-Akt-transgenic mouse lines displayed reductions of the infarcted area by 35% compared to the wild-type littermate. RT-PCR assays showed a high level of transgene in response to ischemic brain damage in these lines.

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It has been demonstrated that some of immediate early genes such as c-Jun are induced immediately and transiently following focal cerebral ischemia. Here we newly characterize the activating transcription factor (ATF)-3 as a focal ischemia associated immediate early gene. Using in situ hybridization and immunohistochemistry, we compared the expression profile of ATF-3 with those of ATF-2 and c-Jun after middle cerebral artery (MCA) occlusion.

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