[Show abstract][Hide abstract] ABSTRACT: A 22-year-old male underwent Bil-tonsillectomy and pharyngoplasty for Sleep Apnea Syndrome. Numbness and pain in the left hand appeared after the operation. A final diagnosis of reflex sympathetic dystrophy (RSD) as a surgical complication was made. There are many kinds of initiating events for RSD. It is recommended that the patient be examined carefully with a good understanding of RSD for early diagnosis.
[Show abstract][Hide abstract] ABSTRACT: A 39-year-old female was diagnosed with left acute otitis media and had paracentesis. Because she had continuous vertigo immediately after the paracentesis, she was sent to our hospital. At first she was treated with conservative therapy, but the severe hearing loss, dizziness and tinnitus worsened, so she underwent surgical exploration of the tympanic cavity 10 days after the onset. During the surgery, there was no dislocation of the ossicle, but perilymphatic leakage from the oval window was observed. The window membrane was repaired with temporal fascia and fat. Although her dizziness disappeared completely, her tinnitus persisted. However, the tinnitus disappeared with time and the hearing loss gradually recovered. This case was possibly a medical accident, but it is important to recognize that perilymph fistula is one of the complications of paracentesis, and when it occurs, it must be diagnosed accurately.
[Show abstract][Hide abstract] ABSTRACT: A combined treatment of laser surgery to the inferior turbinate and transnasal cryodegeneration of the vidian nerve using endoscopy were evaluated. The study consisted of 79 patients with perennial allergic rhinitis caused by house dust. All were refractory to conservative treatment, including allergic desensitization. The CO2 laser surgery was repeated once a week for 3 weeks. After the third laser surgery, the area that was endoscopically estimated to be the sphenopalatine foramen was frozen over the mucous membrane by an extrafine pointed cryoprobe. The subjective results 6 months after the operation are promising, and no major complications were noted. The combined treatment of laser and cryosurgery using endoscopy is a minor surgical procedure with high efficacy and minimal postoperative morbidity. More cases and a longer follow-up are necessary to provide long-term results.
No preview · Article · Jul 2003 · Oto-Rhino-Laryngologia Nova
[Show abstract][Hide abstract] ABSTRACT: Nociceptin/orphanin FQ (N/OFQ) is an endogenous peptide agonist for the opioid receptor homolog, N/OFQ receptor, and serves for the central control of autonomic functions. Morphological details including the cell types that may account for such N/OFQ functions, however, remain unclear. By using X-gal histochemistry for the detection of receptor-expressing cells at both light and electron microscopic levels, we examined the hypothalamus from the receptor-deficient mice bearing a lacZ insertional mutation in the N/OFQ receptor gene. The N/OFQ receptor reflected by lacZ expression was seen at high levels in the anterior hypothalamic area. With electron microscopy, lacZ expression was observed in a subset of neurons showing large cell size and indented nucleus.
No preview · Article · Feb 2003 · Neuroscience Letters
[Show abstract][Hide abstract] ABSTRACT: Nociceptin peptide-receptor system is known to be essential for the regulation of hearing ability. The mRNA for nociceptin precursor protein is highly expressed in the brainstem. We explored a detailed hybridohistochemical expression pattern of the nociceptin precursor mRNA in the mouse brainstem, and identified positive cells in several auditory brainstem nuclei. Positive cells were seen in the dorsal and ventral nuclei of the lateral lemniscus, the rostral periolivary region, the lateroventral and medioventral periolivary nuclei, the dorsal periolivary region, the superior paraolivary nucleus, and the external cortex and dorsal cortex of the inferior colliculus. Of these, the medioventral and lateroventral periolivary nuclei, the major sites of origin of olivocochlear bundle, were most populated by positive cells.
No preview · Article · Dec 2001 · Neuroscience Letters
[Show abstract][Hide abstract] ABSTRACT: Generally, the prognosis of thyroid anaplastic carcinoma is extremely unsatisfactory. We report here excellent results due to early treatment in a patient with anaplastic carcinoma. The patient was a 74-year-old female, who presented with an enlarged frontal neck tumor, together with cervix and throat pain, and undifferentiated carcinoma was strongly suspected based on aspiration biopsy cytology. The patient was admitted and six days after the first examination, total thyroidectomy was performed, and a diagnosis of anaplastic thyroid carcinoma was made based on the permanent pathological specimen. Postoperatively, EAP (Etoposide, Adriamycin, and Cisplatin) treatment and radiotherapy (56 Gy) were performed, with a subsequent second chemotherapy course. At two years no recurrence or metastasis has been noted and the patient has returned to her normal daily life. In conclusion, if radical dissection of the tumor is possible in the early stages, we consider that in patients with anaplastic thyroid carcinoma immediate operation and radiation and chemotherapy treatment should result in a positive prognosis.
[Show abstract][Hide abstract] ABSTRACT: Nociceptin/orphanin FQ (N/OFQ) is an opioid-like heptadecapeptide agonist for the opioid receptor homolog, N/OFQ receptor. To explore the precise distribution of the peptide-receptor system, the authors examined the brain and spinal cord from receptor-deficient mice bearing the targeted mutation (morc(m1)), a lacZ insertional mutation in the N/OFQ receptor gene. Precursor protein N/OFQ (preproN/OFQ) mRNA was detected by using in situ hybridization, and the N/OFQ receptor was detected by using X-gal histochemistry. The N/OFQ receptor reflected by lacZ expression was observed at high levels in the dentate gyrus, lateral septum, subparafascicular thalamic nucleus, medial preoptic area, median preoptic nucleus, ventromedial preoptic nucleus, anterior hypothalamic area, paraventricular hypothalamic nucleus, ventromedial hypothalamic nucleus, auditory brainstem nuclei, pontine dorsal tegmentum, and nucleus of the solitary tract. In situ detection of the N/OFQ receptor mRNA by digoxigenin-labeled riboprobes coupled with tyramide signal amplification in normal and wild-type mice resulted in the regional distribution paralleling the lacZ expression in these regions. PreproN/OFQ mRNA was expressed at high levels in the subparafascicular thalamic nucleus, central gray, central tegmental field, auditory brainstem nuclei, caudal spinal trigeminal nucleus, and spinal dorsal horn. Furthermore, variable levels of expression of the peptide and receptor were seen in distinct sites of the brain and spinal cord. These data indicate a correspondence of the peptide and the receptor in local distribution at limbic, hypothalamic, and brainstem sites. Together with concurrent physiologic and behavioral studies in mutant mice, the results suggest functional roles for the N/OFQ system, including the central regulation of learning and memory, hearing ability, water balance, food intake, and blood pressure.
No preview · Article · Sep 2000 · The Journal of Comparative Neurology
[Show abstract][Hide abstract] ABSTRACT: By immunostaining, neurons expressing peptides (dynorphin and corticotropin-releasing factor, CRF) and glutamate decarboxylase (GAD), a GABA-synthesizing enzyme, were precisely mapped in the rat lateral lemniscal nuclei. While GAD neurons were numerous and preferably localized in the dorsal (DLL) and ventral (VLL) nuclei, neurons expressing these peptides were less numerous and localized primarily in the intermediate (ILL) nucleus of the lateral lemniscus. The ILL nucleus was shown to project to the inferior colliculus and to express Fos rapidly in response to peripheral acoustic stimulation, suggesting that the ILL nucleus may take part in non-GABAergic relay of acoustic information in the lateral lemniscus.
[Show abstract][Hide abstract] ABSTRACT: A retrospective study is presented comparing the results of 167 frozen section diagnoses of surgical extirpated parotid gland tumors with permanent-section diagnoses. Percentages of correct diagnosis for malignancy (cases correctly classified as benign or malignant tumors) and of correct diagnosis for histopathology (cases in which frozen section diagnosis and permanent-section diagnosis were identical) were calculated. Percentages of correct diagnosis for malignancy in all cases, benign cases, and malignant cases were 98.8%, 99.3%, and 95.8%, respectively. Percentages of correct diagnosis for histopathology in all cases, benign cases, and malignant cases were 94.0%, 97.2%, and 75.0%, respectively. These results are superior to the previous reports both of frozen section diagnosis and of fine-needle aspiration biopsy diagnosis although the data for histopathological diagnosis in malignant tumors are average compared to previous reports. We conclude that diagnoses of most parotid gland tumors based on frozen section examination are reliable and accurate, but caution should be exercised in malignant tumors diagnosis.
No preview · Article · Nov 1999 · Nippon Jibiinkoka Gakkai Kaiho
[Show abstract][Hide abstract] ABSTRACT: During the 20 years from 1977 to 1996, 633 cases underwent excisions of parotid tumors (539 benign and 94 malignant) in the department of Otolaryngology of Kansai Medical University. The incidence of Warthin's tumors in the years from (1987 to 1996) was higher than that in the years from 1977 to 1986. On the other hand, the incidence of mucoepidermoid carcinomas was less than in previous reports. Tumors accompanied with spontaneous pain or facial nerve palsy and with invasion to both lobes frequently indicated malignancy. Facial nerve palsy caused by either benign or malignant tumors before operation showed no improvement after surgery. The incidences of facial nerve palsy (1.0% in benign, and 18.3% in malignant) and Frey's syndrome (17.8% in benign, and 18.3% in malignant) after surgery were lower than those in other reports of both benign and malignant tumors. Five-year mortality was 76.1%. All deaths that occurred five years after operation involved highly grade malignant tumors.
[Show abstract][Hide abstract] ABSTRACT: T-type voltage-dependent calcium channel has central roles in neuronal burst firing. The alpha1G subunit of T-type channel has been recently cloned and we here reported a cellular distribution of the alpha1G by in situ hybridization in adult rat brain and spinal cord. The cells expressing alpha1G were widely distributed in the central nervous system. The distribution seemed to be restricted to neurons, and exhibited a specific pattern in the cerebellum, thalamus, hippocampus and cerebral cortex.
No preview · Article · Jul 1999 · Neuroscience Letters
[Show abstract][Hide abstract] ABSTRACT: Results of chemotherapy for head and neck cancer are now improving owing to the development of concomitant use of chemotherapeutic agents such as cisplatin or peplomycin. Concomitant use of the two agents has been favored clinically. However, fundamental study on the combination therapy has not been carried out sufficiently. In the present study we studied the cell kinetics of tumor cells by the combination of cisplatin and peplomycin using flowcytometric analysis and electron microscopy. Survival of tumor cells was lowest, when peplomycin was administrated 3 days after cisplatin. Cell kinetics showed an accumulation at the S and G2M stage in this situation, By the electron microscopic study, microvilli of tumor cells disappeared and the blebbing of tumor cells was observed, when cisplatin alone was administrated. However, when the combination of cisplatin and peplomycin was administrated to the tumor cells, tumor cells enlarged. The results suggest that the mechanism of combination therapy differed from the mechanism of cisplatin alone.