Using immunohistochemical staining for alpha-smooth muscle actin (alpha-SMA), glial fibrillary acidic protein (GFAP), S100 protein (S100), p63, cytokeratin 14 (CK14), and cytokeratin 19 (CK19), we studied acinar and myoepithelial cells of major and minor salivary glands obtained from 14 donated cadavers (78-92 years old) and 5 donated fetuses (aborted at 15-16 weeks of gestation). CK and p63 expression was investigated only in the adult specimens. SMA was detected in all adult glands as well as in fetal sublingual and pharyngeal glands. GFAP expression was seen in a limited number of cells in adult glands, but was highly expressed in fetal pharyngeal glands. S100-positive myoepithelial-like cells were present in adult minor glands as well as in fetal sublingual and pharyngeal glands. Expression of p63 was evident in the ducts of adult glands. CK14 immunoreactivity was observed in a limited number of glandular cells in adults, in contrast to consistent expression of CK19. In both adults and fetuses, a mosaic expression pattern was usually evident for each of the examined proteins. A difference in immunoreactivity for the nerve markers GFAP and S100 was observed between the major and minor glands. Thus, in the present histologic study, we distinguished between the specific gland types on the basis of their immunohistochemical staining. A mosaic expression pattern suggested that the immunoreactivity against nerve protein markers in myoepithelial cells could not be due to the persistence of neural crest remnants or the physiological status of the gland, such as age-related degeneration.
Actins ; Adult ; Aged ; Cadaver ; Fetus ; Glial Fibrillary Acidic Protein ; Humans ; Immunohistochemistry ; Keratin-14 ; Keratin-19 ; Muscles ; Neural Crest ; Population Characteristics ; Proteins ; Salivary Glands ; Salivary Glands, Minor

The supinator muscle originates from the annular ligament of the radius, and the muscle fibers and ligament take a similar winding course. Likewise, the coccygeus muscle and the sacrospinous ligament are attached together, and show a similar fiber orientation. During dissection of adult cadavers for our educational curriculum, we had the impression that these ligaments grow in combination with degeneration of parts of the muscles. In histological sections of 25 human fetuses at 10-32 weeks of gestation, we found that the proximal parts of the supinator muscle were embedded in collagenous tissue when the developing annular ligament of the radius joined the thick intermuscular connecting band extending between the extensor carpi radialis and anconeus muscles at 18-22 weeks of gestation, and the anterior parts of the coccygeus muscle were surrounded by collagenous tissue when the intramuscular tendon became the sacrospinous ligament at 28-32 weeks. Parts of these two muscles each seemed to provide a mold for the ligament, and finally became involved with it. This may be the first report to indicate that a growing ligament has potential to injure parts of the "mother muscle," and that this process may be involved in the initial development of the ligament.
Adult ; Cadaver ; Collagen ; Curriculum ; Fetus ; Fungi ; Humans ; Ligaments ; Muscles ; Orientation ; Pregnancy ; Radius ; Tendons ; Wind

Objective：The number of heart failure （HF） patients is increasing in Japan as its population continues to age, but little is known about current medication strategies. We investigated the relationship between medication changes during hospitalization and the readmission rate among older Japanese patients with new-onset HF.Design：Retrospective cohort study.Methods：We analyzed medical record data from Toho University Medical Center Omori Hospital between March 2004 and April 2018. Initial admissions for new-onset HF in patients aged≥75 years were examined (n＝329). The class Ⅰ recommended medications stipulated in the JCS 2017/JHFS 2017 guidelines were used as the target medications for this study. Patients with dose titrations or additions of the target medications during hospitalization (dose titrations or additions group) were compared with patients without these changes (the other group). The primary outcome was readmission due to HF within one year of discharge. A hazard ratio, adjusted for potential confounders, was estimated using a Cox proportional hazards model.Results：There were 231 patients in dose titrations or additions group and 98 patients in the other group.The one-year readmission rate was 26.5％ in dose titrations or additions group and 31.8％ in the other group. The adjusted hazard ratio of medication changes for readmission was 0.82 (95％ confidence interval, 0.51-1.33, P＝0.415), but was not statistically significant.Conclusion：The older HF patients in dose titrations or additions group showed a reduced risk of readmission, but lacked significance due to low statistical power.

Objectives: This study aimed to clarify the present system of palliative care at general hospitals, and to examine the factors contributing to the opioid consumption. Methods: We surveyed the palliative care system using a self-administered questionnaire, which was mailed to 37 general hospitals in Southern and Southwestern wards, Tokyo. Multiple regression analyses were used to identify the associations between explanatory variables and the opioid consumption. Results: Valid responses were obtained from 18 hospitals (response rate: 48.6%). 35% of the general hospitals didn’t have a palliative care team and most hospitals had no specialists. In multivariate analyses, factors associated with the opioid consumption were pharmacists with speciality of pharmaceutical palliative care, physicians joined the palliative care education program based on the Cancer Control Act of Japan, and the number of physicians’ correct answers of questions regarding palliative care. Conclusion: The survey showed that the higher consumption of opioids is significantly associated with the number of health care workers who have knowledge of palliative care. Our study suggested that the arrangement of palliative care experts might decrease the differences in the opioid consumption between general hospitals.

BACKGROUND: Oral health is thought to be associated with diet quality, and socioeconomic status (SES) affects both oral health and diet. The aim of this study was to investigate the association between the number of teeth and dietary intake as well as nutritional biomarker, considering the subjects' SES. METHODS: We conducted a cross-sectional analysis of data from 2049 individuals aged ≥ 50 years from the National Integrated Project for Prospective Observation of Non-communicable Disease and its Trends in the Aged 2010. The number of remaining teeth was categorized into age-specific quartiles (Q1 to Q4). We assessed the adjusted means and 95% confidence intervals for dietary variables by the number of teeth using analysis of covariance. Stratified analyses by SES were also conducted. RESULTS: The intake of grain products was 31 g higher, and those of vegetables and meat were 30 g and 8 g lower, respectively, in Q1 (fewer teeth) than in Q4 (more teeth). Carbohydrate intake was higher whereas protein, minerals (potassium, magnesium, and zinc), vitamins (vitamins A, E, B, B, β-carotene, and folic acid), and dietary fiber intakes were lower among individuals with fewer teeth. Adjusted mean serum albumin levels were low in Q1. The associations between the number of teeth and dietary intake were more evident in individuals with a low SES. CONCLUSIONS Having few remaining teeth was associated with a low nutrient intake and low serum albumin levels in middle-aged and older Japanese adults, and these associations were more evident in individuals with low SES.
Aged ; Aged, 80 and over ; Carbohydrates ; Cross-Sectional Studies ; Diet ; Energy Intake ; physiology ; Female ; Humans ; Japan ; Male ; Middle Aged ; Nutrients ; Nutrition Surveys ; Nutritional Status ; Serum Albumin ; analysis ; Socioeconomic Factors ; Tooth ; Vegetables