Search PubMed⌕ Search

Biomedical subjects

T Jinnai

Publications and source records attributed to T Jinnai.

13 recordsLinked to original sources
PubMed2001

Surgical program for craniosynostosis using three-dimensional solid model, combined with autologous blood transfusion in a Japanese craniofacial unit.

Since April 1997 at St. Mary's Craniofacial Unit, simulated surgery using a three-dimensional solid model made preoperatively was carried out, which enable sufficient autologous blood banking before the surgery. This study was conducted in eight patients presenting with plagiocephaly, brachycephaly, and oxycephaly consisting of simple craniosynostosis and syndromic craniosynostosis. Four cases (numbers 1-4) conducted with simulated surgery using three-dimensional solid models and fronto-orbital advancement with reshaping, as well as autologous blood transfusion were selected for the later-term group. For the first-term group, four cases (numbers 5-8) that were performed before the introduction of the abovementioned treatment were selected. The later-term group compared with the first-term group showed a decrease in operating time by an average of 1 hour, blood loss during surgery by 90 ml, and one fifth the amount of homologous blood transfusion. Also, 2 cases in the later-term group (cases 3 and 4) were able to avoid homologous blood transfusion, and they had autologous blood transfusion of 30 to 33 ml/kg. The surgical techniques will be improved with repeated cases of simulated surgery, aiming for the minimum invasive surgery. Also, the use of autologous blood transfusion is expected to increase as a less invasive surgery.

Blood Loss, Surgical↗
PubMed2001

C-shape extended transconjunctival approach for the exposure and osteotomy of traumatic orbitozygomaticomaxillary deformities.

In the treatment of post-traumatic deformities of the orbitozygomaticomaxillary complex resulting from trauma, the most appropriate exposure must be used. The choice of exposures includes the bicoronal approach and the periorbital incisions. When the whole orbitozygomatic complex is malpositioned, the bicoronal approach is desirable; this can be combined with buccal and eyelid incisions. However, the bicoronal approach is complicated by a longer duration of operation time, post-surgical scars that tend to show, and potential damage to the temporal branch of the facial nerve. A new approach using a C-shape extended transconjunctival approach is possible to have one field of vision to osteotomize the frontozygomatic suture, the lateral orbital wall, inferior orbital rim, lateral maxillary buttress, and zygomatic arch. It takes less operating time and the post-surgical scars are shorter than the bicoronal approach.

Accidents, Traffic↗
PubMed2000

Sulindac and a cyclooxygenase-2 inhibitor, etodolac, increase APC mRNA in the colon of rats treated with azoxymethane.

BACKGROUND: Non-steroidal anti-inflammatory drugs (NSAIDs) have been reported to protect against the development of colon cancer. However, the mechanism(s) by which NSAIDs exert their effects is not clear. AIMS: The aim of this study was to examine the effects of NSAIDs on mRNA expression of tumour suppressor adenomatous polyposis coli (APC) gene in rat colon mucosa. METHODS: Starting at six weeks of age, three groups of rats (groups 1, 2, and 3) were treated with azoxymethane (AOM), a colon specific carcinogen, and another three groups (groups 4, 5, and 6) were not given AOM. Groups 2 and 3 were given 10 mg/kg of sulindac or etodolac, respectively, three times weekly during the experiment. Groups 4 and 5 were also given sulindac or etodolac, respectively, in the same manner as in groups 2 and 3. Group 6 (untreated control) was not given any agent (AOM or NSAIDs). At 10 weeks of age, preneoplastic lesions (aberrant crypt foci (ACF)) induced by AOM in the colon were counted, and the level of expression of APC mRNA in the colonic mucosa was estimated by the reverse transcription-competitive polymerase chain reaction method and northern blot analysis. RESULTS: Mean occurrence of ACF in rats in groups 2 and 3 was reduced to approximately 50% of that in group 1. The level of APC mRNA expression in group 1 (AOM alone) was lower than that in group 6 (untreated control) (p<0.05); however, levels of APC mRNA expression in groups 2, 3, 4, and 5, to which NSAIDs had been administered, were significantly increased compared with levels in groups 1 and 6 (p<0.01). CONCLUSIONS: Both sulindac and etodolac reduced the occurrence of ACF and induced an increase in APC mRNA in rat colon mucosa.

Animals↗
PubMed1997

Target cell-induced calcium signals in human natural killer leukemia cells as revealed by confocal fluorescence microscopy.

The target cell-induced calcium response in natural killer (NK) cells was examined using indo-1 (a ratiometric fluorochrome), a newly developed video-rate ultraviolet laser-scanning confocal microscope system, and a human NK leukemia cell line, YTN. Susceptible target cells (JY cells), but not unsusceptible target cells (K562 cells), increased the intracellular calcium concentration ([Ca]i) in almost all indo-1-loaded YTN cells with a lag time, although the kinetics of increase in [Ca]i differed in individual YTN cells. The increase in [Ca]i was completely blocked by 2 mM EGTA and partially (around 50%) blocked by 10 microM nicardipine, the extents of inhibition of calcium response correlating well with those of inhibition of cytotoxic activity. Thus, the calcium response in YTN cells observed in this study may constitute a critical step in the manifestation of cytotoxic activity.

Biological Transport↗
PubMed1991

The contour lines of the upper lip and a revised method of cleft lip repair.

Many techniques for cleft lip repair have been reported, but these techniques do not consider the contour lines of the upper lip and, in fact, destroy them. The upper lip has complicated contour lines including the vermilion free margin, vermilion border, upper lip horizontal groove (upper lip groove), philtrum (dimple and columns), nostril sills, and nasolabial grooves. Incision lines should be designed so that the postoperative scars do not cross these contour lines. We feel that our incision lines and postoperative scars provide better aesthetic results and diminish hypertrophic scar formation.

Child, Preschool↗
PubMed1991

Operations for microforms of cleft lip.

Microform cleft lip is a mild expression of cleft lip and may be difficult to repair. Its severity may be defined by the degree of downward depression of the nostril rim, skin striae of the upper lip, notching of Cupid's bow, and deformity of the vermilion border. Variation in surgical repair is reported for each type of microform cleft lip.

Cleft Lip↗
PubMed1990

Cleft lip-nose repair technique: sequential repair.

The results of repairing cleft lip by aesthetic plastic surgery are now excellent. However, the cleft lip-nose deformity is still very difficult to repair with the present techniques. A technique that can repair the cleft lip-nose deformity with good results is presented. The technique is divided into three parts: Part I consists of nasal repair of the primary cleft lip. Part II is nasal reconstruction as a secondary operation with or without lip repair. For example, nasal reconstruction may be secondary to repair of deformities of the sill, rim, limen nasi, septum, or nasal bones. Part III is an aesthetic nasal operation such as rhinoplasty, mentoplasty, or zygomaplasty.

Cleft Lip↗
PubMed1988

Augmentation rhinoplasty.

Augmentation rhinoplasty using a silicone implant is the most popular operation in Japan, but is not without several complications such as exposure of the implant and its deviation. We obtained good results in preventing these complications by a fixation at the hollow which is made by chiseling the frontal bone and by fibrous tissue which grows through the small holes of the implant tail.

Cleft Lip↗