Mutations in the p53 gene seem to be the most common genetic changes in human malignancies. Mutation or altered p53 expression is a common occurrence in many solid neoplasms, including head and neck carcinomas. Recent studies have also shown p53 alterations in several premalignant conditions of the colon, esophagus, lung, and brain. Preliminary data have suggested that p53 mutations may be involved in tumor progression. This study was performed to determine the incidence of p53 mutations in histologically 27 squamous cell carcinomas, 19 basal cell carcinomas, 18 Schneiderian papillomas, 3 Schneiderian papillomas with malignant transformation, and 15 pleomorphic adenomas of the head and neck region. The degree of p53 gene overexpression was also evaluated according to differentiation, histologic type of tumor, and tumor progression in the head and neck carcinomas. The results were as follows; 1) Eighteen of 27 squamous cell carcinomas, and 4 of 27 dysplasias adjacent to the squamous cell carcinoma of the head and neck expressed p53 protein, but none of the normal control specimens expressed detectable p53 protein. There was no relationship between differentiation of squamous cell carcinoma and p53 protein expression. 2) Twelve of 19 basal cell carcinomas expressed p53 protein; the adenoid type especially overexpressed p53 protein. 3) Nine of 15 pleomorphic adenomas expressed p53 protein especially in the epithelial components. 4) Thirteen of 18 Schneiderian papillomas and all Schneiderian papillomas with malignant transformation expressed p53 protein. The above results indicate that the p53 protein expression is a useful tool for the prediction of tumor progression in the head and neck tumor, but there was no relationship between the differentiation of the tumor and p53 protein expression.
Humans ; Incidence ; Adenoma ; Genes, p53

The authors studied EBV genome expression in 40 conventionally processed samples of nasopharyngeal carcinomas (NPC), using in situ hybridization for EBERs and immunohistochemistry for LMP, Bcl-2 and p53 proteins. The NPCs consisted of 6 keratinizing squamous cell carcinomas (KSCs), 13 nonkeratinizing carcinomas (NKCs) and 21 undifferentiated carcinomas (UCs). The results were summarized as follows: 1) EBERs were expressed in 80.0% of all the NPCs (32/40). As for the subtypes, they were detected in 92.3% of NKCs (12/13), in 90.5% of the UCs (19/21), and in 16.7% of the KSCs (1/6). In positive cases, the nuclei of tumor cells displayed uniformly strong staining. 2) LMP was expressed in 10.0% of all the NPCs (4/40), all of which were UC. The LMP expression in the UCs was not correlated to the expression of EBERs, Bcl-2 and p53 proteins. 3) Bcl-2 protein was detected in 85.0% of all the NPCs (34/40). As for the subtypes, they were detected in 92.3% of the NKCs (12/13), in 90.5% of the UCs (19/21), and in 50.0% of the KSCs (3/6). 4) p53 protein was detected in 75.0% of all the NPCs (30/40). As for the subtypes, they were detected in 81.0% of the UCs (17/21), in 69.2% of the NKCs (9/13), and in 66.7% of the KSCs (4/6). 5) In the NPCs the expression of EBER showed a significantly positive correlation with that of p53 or Bcl-2 protein. The above results indicate that the association of EBV with NPC is chiefly with poorly differentiated and undifferentiated carcinomas. Additionally, carcinomas commonly display widespread, strong immunoreactivity of Bcl-2 and p53 proteins over tumor cells. In conclusion, these observations indicate that the EBV-association in NPC appears to contribute to the overexpression of tumor-related genes during carcinogenesis.
Carcinogenesis ; Carcinoma ; Carcinoma, Squamous Cell ; Genome ; Herpesvirus 4, Human* ; Immunohistochemistry ; In Situ Hybridization

PURPOSE: This study was undertaken to increase the knowledge of the intra- and extra-spinal alignments and to help recovery of sagittal alignment in operation by measuring the normal values of the spinal alignment in relation to hip axis as well as those of the thoracic, thoracolumbar junction, lumbar and lumbosacral junction of sagittal alignment and their correlation. MATERIALS AND METHODS: Whole spine standing lateral radiographs were taken in young 100 adults without spinal abnormalities clinically and radiographically. Intraspinal alignment was measured with angles of thoracic kyphosis, lumbar lordosis, maximum thoracic kyphosis, maximum lumbar lordosis, angle of the thoracolumbar junction, sacral inclination, segmental angles and disc angles respectively with special emphasis on lumbar lordosis. Extraspinal alignment was measured with sacropelvic angle, spinopelvic balance and spinal balance in relation to hip axis. Correlations among these parameters were analyzed. RESULTS: Lumbar lordosis and thoracic kyphosis were measured -49 degree(-22 - -79 degree) and 32 degree(6 degree-56 degree), respectively. Slight amount of kyphosis in thoracolumbar junctional area was considered normal. Lumbar lordosis had significant correlation with thoracic kyphosis and sacral inclination. However, there was no correlation between thoracic kyphosis and sacral inclination. Lowest two lumbar segments comprised 71% of total lordosis. Lumbar lordosis usually started at L1-2 and gradually increased at each level caudally to the sacrum. Sacropelvic angle, spinopevlic balance and spinal balance were measured -11 degree(-6 degree - 24 degree), -4 cm (-10 - 2 cm), and -2 cm (-7 - 4 cm) respectively with C7 positioned posterior to hip axis mostly. CONCLUSIONS: There was a wide range of normal sagittal alignment of the thoracic and lumbar spines, and normal values of these alignments were not easily defined. Therefore, normal patterns of sagittal curvature and sagittal balance should be more emphasized.
Adult ; Animals ; Axis, Cervical Vertebra ; Hip ; Humans ; Kyphosis ; Lordosis ; Reference Values ; Sacrum ; Spine*

No abstract available.
Seizures*

No abstract available.

No abstract available.
Thrombocytosis*

No abstract available.

No abstract available.

To assess the pattern of psychiatric symptoms and to evaluate the relationship between exposure related variables(duration of work and urinary hippuric acid concenturation) and psychiatric symptoms in organic solvent exposed workers, case control study of forty-two solvent exposed workers and ninety-six non-exposed workers was conducted. The general health questionnaire 28(GHQ28) was administered to evaluate psychiatric symptoms and urinary hippuric acid concenturations was measured to estimate the present status of solvent exposure in exposed group and to estimate normal level in non-exposed group. The meand concenturation of urinary hippuric acid was significantly higher in exposed group (2.953g/creatinine g) than non-exposed group (0.395g/creatinine g) (P<0.01). The total positive rates of symptoms were significantly higher in exposed group(28.2%) than non-exposed group(17.5%) (P<0.05). The positive rates of symptoms for four sub-scales of GHQ 28 in exposed group were in the order of somatic symptoms, anxiety, social dysfunction, depression and in the order of social dysfunction, anxiety, depression, somatic symptoms in non-exposed group.The positive rates of symptoms for somatic symptoms and anxiety were significantly higher in exposed group than non-exposed group (P<0.05) and the proportion of workers with six or more positive symptoms(dysthymic states) in exposed group were significantly higher than non-exposed group (P<0.01). After the effect of age, sex, level of income, level of education, and duration of work were controlled, the total score of GHQ28 was still significantly different between exposed and non-exposed group(P<0.01). In multiple logistic regression analysis on the dysthymic state, the odds ratio of level of income was statistically significant in both group. The odds ratios of exposure related variables such as duration of work and hippuric acid concenturations were not statistically significant but there was a tendency that exposure related variables had an effect on dysthymic state in exposed group.In future, comtinuous evaluation of psychiatric symptoms on organic solvent exposed workers and studies to detect the factors that affect on psychiatric symptoms are required.
Anxiety ; Case-Control Studies ; Depression ; Education ; Logistic Models ; Odds Ratio ; Surveys and Questionnaires ; Solvents* ; Toluene

The paramount importance of breast feeding for the health of the infants has been recognized by untritionists and physicians. Although many advantages of the breast feedng, exclusive breast feeding without weaning diet or supplement food during prolonged perind in infants may produce iron deficiencyh anemia. This study was conducted to find out the hematologic state in exclusively prolonged breast-fed infants among these anemic patients and the way of thinking about their baby's feeding method in their mothers. Mothers of the anemic patients has been surveyed with questionare. The results and problems obtained from this study are summerized as follows. 1) Among 40 patients of this study, 27 were male (67.5%) and 13 were female (32.5%). Mean age was 12.6+/-2.7 month and 9 & 11 month of age were the most common, respectively (15.0%). 2) Mean age of mothers was 29.5 year. The 25 34 year-old group was most common. 3) Education levels of mothers were primary 10%, middle 10%, high 60%, and college graduate 20%. 4) In motivatins of breast feeding. Persuasion of husband or the parent of husband' 19(47.5%). 'Convenience for use' 12 (30.0%), and 'Through mass media or public information' 9 (22.5%). 5) In the causes of prolonged breast feeding, 'Think that satisfactory nutrition for baby is possible with breast milk alone' 4(10.0%), 'Due to persuasion of husband or the parents of husband' 11 (27.5%), 'Baby did no suck milk bottle or eat other diet except breast milk' 25 (62.5%). 6) In whether or not acknowledgment of the necessity of weaning diet, 'Know it but not consider so important 22 (55.0)%, 'Do not know at all) 15 (37.5%), and 'Breast milk, that will do' 3(7.5%). 7) Hb level in patient group, from 6 to 6.9g/dl was 2 (50.0%), from 7 to 7.9g/dl was 3 (7.5%), from 8 to 8.9%g/dl was 15 (37.5%), and from 9 to 10 g/dl was 20 (50.0%). From 9 to 10g/dl was the most common. Hematologic findings were Hb 8.8+/-0.9g/dl, Hct 28.8+/-3.0%, MCV 64.7+/-6.7 fl, MCH 20.0+/-2.5pg, MCHC 30.8+/-1.5g/dl. Platelet 452.5+/-142.9x103/mm3, Reticulocyte count 1.4+/-0.6%, Fe 28.6+/-14.1 g/dl, TIBC 446.7+/-66.2 g/dl, Ferritin 10.5+/-7.0ng/ml. Transferrin saturation 6.6+/-3.5%. 8) In association with duration of breast milk feeding and hematologic findings, as duration was prolonged, Hb, Hct, MCV & MCH were significantly decreased (p<0.01).
Adult ; Anemia* ; Blood Platelets ; Breast Feeding* ; Breast* ; Diet* ; Education ; Feeding Methods ; Female ; Ferritins ; Humans ; Infant ; Iron ; Male ; Mass Media ; Milk ; Milk, Human ; Mothers ; Parents ; Persuasive Communication ; Reticulocyte Count ; Spouses ; Thinking ; Transferrin ; Weaning*