Many of early findings regarding intestinal stem cells (ISCs) and their niche in the human intestine have relied on colorectal cancer cell lines and labor-intensive and time-consuming mouse models. However, these models cannot accurately recapitulate the physiologically relevant aspects of human ISCs. In this study, we demonstrate a reliable and robust culture method for 3D expanding intestinal spheroids (InSexp ) mainly comprising ISCs and progenitors, which can be derived from 3D human intestinal organoids (HIOs). We did functional chararcterization of InSexp derived from 3D HIOs, differentiated from human pluripotent stem cells, and optimization culture methods. Our results indicate that InSexp can be rapidly expanded and easily passaged, and show enhanced growth rates via WNT pathway activation. InSexp are capable of exponential cell expansion and cryopreservation. Furthermore, in vitro-matured HIO-derived InSexp proliferate faster than immature HIO-derived InSexp with preservation of the parental HIO characteristics. These findings may facilitate the development of scalable culture systems for the long-term maintenance of human ISCs and provide an alternative platform for studying ISC biology.

The distribution and morphology of cholecystokinin-8 (CCK 8)-, neuropeptide Y (NPY)-, Substance P (SP)- and vasoactive intestinal polypeptide (VIP)-immunoreactivity were examined in the cat superior colliculus (SC) by means of immunohistochemistry. Judging from this study, some neuropeptides-IR neurons may be present in the superficial layers of the sc. And these neurons and neuropeptides may be involved in the functions of the superficial layers.
Animals ; Brain* ; Cats* ; Immunohistochemistry ; Neurons* ; Neuropeptide Y ; Neuropeptides ; Substance P ; Superior Colliculi* ; Vasoactive Intestinal Peptide

Purpose: This study aimed to examine the mediating role of nursing professionalism in the relationship between critical thinking disposition and medication safety competency among peri-anesthesia nurses. Methods: Data were collected from 128 peri-anesthesia nurses with at least six months of experience in recovery-related departments across medical institutions nationwide. The analysis was conducted using IBM SPSS Statistics for Windows, version 24.0, including descriptive statistics, t-tests, one-way ANOVA, Scheffé tests, Pearson’s correlation coefficients, stepwise multiple regression, and the SPSS Process Macro. Results: Medication safety competency showed a significant positive correlation with critical thinking disposition (r=.79, p<.001) and nursing professionalism (r=.80, p<.001).Similarly, critical thinking disposition was positively correlated with nursing professionalism (r=.78, p<.001). Nursing professionalism was identified as a partial mediator in the relationship between critical thinking disposition and medication safety competency, with a 95% confidence interval of .11 to .63. Conclusion Critical thinking disposition significantly enhances medication safety competency, with nursing professionalism serving as a partial mediator.These findings underscore the importance of developing targeted educational programs to foster critical thinking skills and nursing professionalism, ultimately improving medication safety competency among peri-anesthesia nurses.

Purpose: This study aimed to examine the mediating role of nursing professionalism in the relationship between critical thinking disposition and medication safety competency among peri-anesthesia nurses. Methods: Data were collected from 128 peri-anesthesia nurses with at least six months of experience in recovery-related departments across medical institutions nationwide. The analysis was conducted using IBM SPSS Statistics for Windows, version 24.0, including descriptive statistics, t-tests, one-way ANOVA, Scheffé tests, Pearson’s correlation coefficients, stepwise multiple regression, and the SPSS Process Macro. Results: Medication safety competency showed a significant positive correlation with critical thinking disposition (r=.79, p<.001) and nursing professionalism (r=.80, p<.001).Similarly, critical thinking disposition was positively correlated with nursing professionalism (r=.78, p<.001). Nursing professionalism was identified as a partial mediator in the relationship between critical thinking disposition and medication safety competency, with a 95% confidence interval of .11 to .63. Conclusion Critical thinking disposition significantly enhances medication safety competency, with nursing professionalism serving as a partial mediator.These findings underscore the importance of developing targeted educational programs to foster critical thinking skills and nursing professionalism, ultimately improving medication safety competency among peri-anesthesia nurses.

Purpose: This study aimed to examine the mediating role of nursing professionalism in the relationship between critical thinking disposition and medication safety competency among peri-anesthesia nurses. Methods: Data were collected from 128 peri-anesthesia nurses with at least six months of experience in recovery-related departments across medical institutions nationwide. The analysis was conducted using IBM SPSS Statistics for Windows, version 24.0, including descriptive statistics, t-tests, one-way ANOVA, Scheffé tests, Pearson’s correlation coefficients, stepwise multiple regression, and the SPSS Process Macro. Results: Medication safety competency showed a significant positive correlation with critical thinking disposition (r=.79, p<.001) and nursing professionalism (r=.80, p<.001).Similarly, critical thinking disposition was positively correlated with nursing professionalism (r=.78, p<.001). Nursing professionalism was identified as a partial mediator in the relationship between critical thinking disposition and medication safety competency, with a 95% confidence interval of .11 to .63. Conclusion Critical thinking disposition significantly enhances medication safety competency, with nursing professionalism serving as a partial mediator.These findings underscore the importance of developing targeted educational programs to foster critical thinking skills and nursing professionalism, ultimately improving medication safety competency among peri-anesthesia nurses.

Purpose: This study aimed to examine the mediating role of nursing professionalism in the relationship between critical thinking disposition and medication safety competency among peri-anesthesia nurses. Methods: Data were collected from 128 peri-anesthesia nurses with at least six months of experience in recovery-related departments across medical institutions nationwide. The analysis was conducted using IBM SPSS Statistics for Windows, version 24.0, including descriptive statistics, t-tests, one-way ANOVA, Scheffé tests, Pearson’s correlation coefficients, stepwise multiple regression, and the SPSS Process Macro. Results: Medication safety competency showed a significant positive correlation with critical thinking disposition (r=.79, p<.001) and nursing professionalism (r=.80, p<.001).Similarly, critical thinking disposition was positively correlated with nursing professionalism (r=.78, p<.001). Nursing professionalism was identified as a partial mediator in the relationship between critical thinking disposition and medication safety competency, with a 95% confidence interval of .11 to .63. Conclusion Critical thinking disposition significantly enhances medication safety competency, with nursing professionalism serving as a partial mediator.These findings underscore the importance of developing targeted educational programs to foster critical thinking skills and nursing professionalism, ultimately improving medication safety competency among peri-anesthesia nurses.

No abstract available.

No abstract available.
Humans ; Infant*

BACKGROUND: The usage of appropriate disinfectants is essential for infection control in a hospital. Inadequate use of disinfectants is the cause of human or environmental toxicity and is a waste of cost. The objective of this study was to describe the status of the usage of disinfectants in Korean hospitals. METHOD: One hundred and eighty three hospitals of over 300 beds were investigated by a questionnaire distributed by mall. Data collection was done on November 1999. The questionnaire was made by the Association of Infection Control Nurses in Korea, based on references and protocols of the Korean Society of Nosocomial Infection Control. Numerical and percentage data were analyzed by SPSS. RESULTS: The collection rate of the questionnaire was 43.7% (80/300). Thirty five hospitals (46.7%) had an official process in selecting disinfectants in their hospitals. Regarding skin antiseptics, 10% povidone iodine and 70% alcohol were commonly used in skin preparation for intravenous catheterization or pre-operative skin disinfection, For disinfection of mucosal membranes such as mouth and periurethral area, 3% boric acid solution or 3% H202 were used. Most of the hospitals decontaminated contaminated medical instruments manually with dodecyl diamino ethyl glycine (20.8%). glutaraldehyde (15.6%). quaternary ammonium compounds (13.8%), virkon (12.3%) and sodium hypochlorites (11.7%). Glutaraldehyde and virkon were frequently used for disinfection of endoscopes. Sodium hypochlorites (48.9%) and quaternary ammonium compounds (19.8%) were the most commonly used environmental disinfectants. Some noticeable problems in disinfectants were as follows. First, for mouth care, many hospitals (41.7%) over-used boric acid, which has cumulative toxicity for humans. Second, many hospitals had an incorrect protocol of disinfecting endoscopes. Third, for environmental decontamination and instrument cleaning, some hospitals used high level disinfectants such as glutaraldehyde, which is too costly and provides unnecessary safety problems. Fourth, after patient discharge, many hospitals did not use disinfectants at all. Considering the specific Korean medical environment of high incidence of multi-drug resistant microorganisms, use of disinfectants for discharged environments may be warranted. CONCLUSION: This study included only hospitals of over 300 beds, which has a limitation in representing the status of disinfectants usage in a country. However, significant problems from misunderstanding the basic principles of disinfectants and misusages of disinfectants were observed in this investigation. These observations will provide useful information for designing a guideline for the appropriate uses and for efficient education of disinfectants, and also for planning a national control program for proper disinfectants usage in this country.
Anti-Infective Agents, Local ; Catheterization ; Catheters ; Cross Infection ; Data Collection ; Decontamination ; Disinfectants* ; Disinfection ; Education ; Endoscopes ; Glutaral ; Glycine ; Humans ; Incidence ; Infection Control ; Korea* ; Membranes ; Mouth ; Patient Discharge ; Povidone-Iodine ; Quaternary Ammonium Compounds ; Skin ; Sodium ; Surveys and Questionnaires

SUMMARY: The present study was carried out to evaluate whether the coculture system of human embryos with Vero cells can improve the quality of embryo or overcome the repetitive implantation failures in order to obtain pregnancy. From January to December 1996, a total 202 cases which patients with the problems of repetitive implantation failures (group I) or those with the poor embryonic quality in their previous cycles (group II) was analysed. The quality of cocultured embryo, pregnancy, on-going and implantation rates between coculture and control groups were compared. Of 93 cases in group I, coculture was performed in 34 cases and conventional IVF for the rest. Of 109 cases in group II, 36 for coculture and 73 for conventional IVF. In group I, pregnancy, on-going and implantation rates in coculture group (14/34 (41.2%), 9/34 (26.5%), 16/81 (19.8%), respectively) were higher than those of control (11/59 (18.6%), 8/59 (13.6%), 12/152 (7.9%), respectively). There is significance in the pregnancy and implantation rates (p=0.028 and p=0.015). In group II, pregnancy, on-going and implantation rates in coculture group (8/36 (22.2%), 5/36 (13.9%), 8/87 (9.2%), respectively) were higher than those of control (5/73 (6.8%), 3/73 (4.1%), 3/158 (1.9%), respectively). Like the result of group 1, there is significance in the pregnancy and implantation rates (p=0.028 and p=0.022). Coculture system with Vero cells works well in the groups of the two indications. Although the case of 3 day-coculture was small as 15 cases in group II, 3 day-coculture improved pregnancy rate (4/15 (26.7%)). Therefore, 3 day-coculture with assisted hatching is recommended to the patients with poor embryonic quality. In conclusion, coculture system with Vero cells can be suggested as an effective method which improves pregnancy rate in those who have repetitive implantation failures or whose embryonic quality was poor in their previous cycles.
Coculture Techniques* ; Embryonic Structures ; Humans ; Humans* ; Pregnancy ; Pregnancy Rate ; Prognosis* ; Vero Cells