No abstract available.
Osteoclasts*

A wide-spectrum initiation model was investigated in mice. Sequential treatments with diethylnitrosamine, urethane and N-methylnitrosourea, with or without a promoter, phenobarbital, resulted in tumor formation in the lungs in 85-90% of animals, but did not produce any tumorous lesions in other organs. The lung tumors were adenomas and the mean number of adenomas was 2.2-2.6 per mouse. Phenobarbital combination had no additive effect on lung tumor incidence and multiplicity. Splenic NK cell activity showed inconsistent increment in the carcinogen plus phenobarbital-treated group during the experiment (P less than 0.05).
*Adenoma/chemically induced/immunology ; Animals ; Diethylnitrosamine/pharmacology ; Female ; *Killer Cells, Natural/drug effects ; *Lung Neoplasms/chemically induced/immunology ; Methylnitrosourea/pharmacology ; Mice ; Phenobarbital/pharmacology ; Random Allocation ; Urethane/pharmacology

Respiratory syncytial virus pneumonia in a 6-month-old male infant progressed to acute respiratory distress syndrome. He had an acute and rapidly progressive Pulmonary disease, in association with progressive, diffuse, bilateral pulmonary infiltrates on the chest radiograph, and hypoxemia(PaO2/FiO2 ratio of 98.2 with PEEP) without evidence of cardiac disease. High frequency oscillatory ventilation(HFOV) was instituted after worsening of oxygenation with conventional ventilation. High frequency oscillatory ventilation improved oxygenation without any complications-After 8 days of HFOV, conventional ventilation was instituted with- out impairment of oxygenation-After 13 days of total mechanical ventilation, he was extubated and soon after discharged home. High frequency oscillatory ventilation provide good results of oxygenation and ventilation in infants with ARDS. Further evaluation of safety and efficacy of HFOV will Fequire carefully designed, randomized, controlled studies of patients with acute respiratory distress syndrome.
Heart Diseases ; Humans ; Infant* ; Lung Diseases ; Male ; Oxygen ; Pneumonia* ; Radiography, Thoracic ; Respiration, Artificial ; Respiratory Distress Syndrome, Adult ; Respiratory Syncytial Viruses* ; Ventilation

Biochanin A, an isoflavone compound, is reported to have an inhibitory effect on benzo(a)pyrene [B(a)P] metabolism. We examined the modifying effect of biochanin A on in vivo carcinogenesis using a mouse lung tumor model. As carcinogens, a single subcutaneous injection of 0.5mg of B(a)P was given within 24 hours after birth. The test groups were injected with 0.125mg of biochanin A in 0.1ml DMSO by i.p. 3 times a week for 6 weeks after weaning. All mice were sacrificed at week 9 and the incidence and multiplicity of lung tumors were examined. Concomitant administration of biochanin A showed a significant inhibitory effect on the incidence of tumor-bearing mice (12.5%, P<0.01), as well as the mean number of tumors (0.13, P<0.001), compared with the group treated with B(a)P alone in which the incidence was 57.1% and the mean number was 1.0. These results suggest that biochanin A has inhibitory potential on the development of mouse lung tumor induced by B(a)P.
Animals ; Animals, Newborn ; Anticarcinogenic Agents/*pharmacology ; Benzo(a)pyrene ; Body Weight/drug effects ; Female ; *Genistein ; Incidence ; Isoflavones/*pharmacology ; Lung Neoplasms/chemically induced/*prevention & control ; Mice ; Neoplasms, Multiple Primary/chemically induced/prevention & control ; Survival Analysis

A 24-year-old man was admitted due to an incidentally detected mass in his left testis, which showed radiopaque calcification on plain X-ray film. Left orchiectomy was performed, and the resected testis contained a well-demarcated, hard mass measuring 1.1 cm. Histological analysis revealed that the tumor was composed of neoplastic cells, fibrotic stroma, and laminated or irregularly shaped calcific bodies. The individual cells had abundant eosinophilic or clear cytoplasm with round nuclei, each of which contained one or two conspicuous nucleoli. They were arranged in cords, trabeculae, clusters, and diffuse sheets. There were several foci of intra-tubular growth patterns, with thickening of the basal lamina. Immunohistochemically, the neoplastic cells were positive for S-100 protein and vimentin, focally positive for inhibin alpha, and negative for cytokeratin, CD10, and Melan-A. In addition to reporting this rare case, we also review the relevant literature regarding large cell calcifying Sertoli cell tumors.
Basement Membrane ; Cytoplasm ; Eosinophils ; Humans ; Immunohistochemistry ; Inhibins ; Keratins ; MART-1 Antigen ; Orchiectomy ; S100 Proteins ; Sertoli Cell Tumor* ; Testis* ; Vimentin ; X-Ray Film ; Young Adult

The purpose of this study is to identify health promotion behavior, self-efficacy and role stress of family caregivers who care for hospitalized cancer patient, The results would be used to provide the necessary basic data for promoting healthy behavior of the family caregivers to the cancer patient. The results were as follow : 1) The level of health promotion behavior was significantly different depending on the existence of care givers religion and type of help from family members. There was a positive relationship between the performance level of health promotion behavior and perceived health status or age. There was a negative correlation between the performance level of health promotion behavior and time cared for. 2) The level of self-efficacy was significantly different depending on gender and if the subject was employed. There was a positive relationship between perceived health status and intimacy with patient. 3) The level of role stress was significantly different in genders and relationships with patients. 4) There was a positive relationship between health promotion behavior and self-efficacy.
Caregivers* ; Health Promotion* ; Health Status ; Humans

The purpose of this study is to identify health promotion behavior, self-efficacy and role stress of family caregivers who care for hospitalized cancer patient, The results would be used to provide the necessary basic data for promoting healthy behavior of the family caregivers to the cancer patient. The results were as follow : 1) The level of health promotion behavior was significantly different depending on the existence of care givers religion and type of help from family members. There was a positive relationship between the performance level of health promotion behavior and perceived health status or age. There was a negative correlation between the performance level of health promotion behavior and time cared for. 2) The level of self-efficacy was significantly different depending on gender and if the subject was employed. There was a positive relationship between perceived health status and intimacy with patient. 3) The level of role stress was significantly different in genders and relationships with patients. 4) There was a positive relationship between health promotion behavior and self-efficacy.
Caregivers* ; Health Promotion* ; Health Status ; Humans

Recently, gender-affirming hormone therapy for gender incongruence has become an issue in various countries and organizations with various guidelines. In South Korea, several clinical treatments are also used with many possible options. These treatments include masculinizing (female-to-male [FTM]) or feminizing (male-to-female [MTF]) hormone therapies, with regimens usually driven by standards of hormonal replacement therapy for hypogonadism (i.e., hypogonadal natal men and postmenopausal women). This cross-sex hormone therapy can change patients’ physical appearance to better match their gender identity and expression. Regarding masculinizing therapy, injection and transdermal gel types of testosterone are used according to international guidelines. Progesterone is utilized in the form of oral pills, injections, or intrauterine devices to suppress menstruation and avoid pregnancy. Essentially, feminizing therapy uses androgen blockers along with estrogen. This is because estrogen alone cannot exert sufficient androgen-suppressing effects. In South Korea, the most commonly used androgen blockers are spironolactone and cyproterone acetate. Gonadotropin-releasing hormone (GnRH) agonist is also available. Regarding estrogen, oral pills, injections, and transdermal gels are utilized. This review introduces these gender-affirming hormone therapies in South Korea and discusses the side effects of each regimen.

Congenital muscular torticollis (CMT) is called 'pseudotumor of infancy' because it is commonly discovered and diagnosed within 14~28 days after birth as a sternomastoid tumor. We report two cases of CMT which presented as head tilt without any palpable neck mass immediately after birth but later developed into sternomastoid tumors. Serial ultrasonography confirmed increased echogenicities of the sternocleidomastoid muscles. We think that these findings are prodromal signs of sternomastoid tumors. Close physical examination by a neonatologist is crucial for an early diagnosis of CMT. Neonates with head tilt and increased ecogenicity of the sternocleidomastoid muscle on ultrasonography should be carefully followed up to see whether neck mass develops later. The authors suggest that CMT is not a static entity but rather one that progress to mass alteration after birth.
Early Diagnosis ; Head ; Humans ; Infant, Newborn ; Muscles ; Neck ; Parturition ; Physical Examination ; Prodromal Symptoms ; Torticollis

This study investigated resistance mechanisms and epidemiology of emerging linezolid-nonsusceptible Enterococcus faecalis (LNSEF) in a tertiary care hospital. LNSEF isolated from clinical samples were collected from November 2017 to June 2019. The isolates were investigated for linezolid resistance and the associated molecular mechanisms, including mutations of 23S rRNA domain V and acquisition of the cfr or optrA resistance gene. We used pulsed-field gel electrophoresis (PFGE) and multilocus sequence typing for the molecular typing of the isolates. Among 4,318 E. faecalis isolates, 10 (0.23%) were linezolid-nonsusceptible. All LNSEF isolates were optrA-positive and cfr-negative. Of these isolates, five were sequence type (ST) 476, two ST585, one ST16, one ST16-like, and one ST480. Six LNSEF isolates obtained in the first year clustered to three types in the PFGE analysis: two ST476 isolates of type A, two ST585 isolates of type B, and two ST16 or ST16-like isolates of type C. Seven cases were of community-onset and three were hospital acquired, but total of eight were healthcare-associated including five community-onset. None of the patients had a history of linezolid treatment, and in one patient, we detected linezolid-susceptible E. faecalis one month before LNSEF detection. In conclusion, heterogenous clones of optrA-positive LNSEF emerged in the hospital mainly via community-onset.