EphA/ephrin-A mediated signaling has emerged as a key mechanism regulating axon guidance and topographic mapping, particularly in the well-characterized visual system from the retina to the superior colliculus (SC). In this study, EphA8 bacterial artificial chromosome (BAC) was manipulated to contain a floxed eGFP and human ephrin-A5 expression cassette using homologous recombination method. In the mice containing the recombinant BAC, it was shown that GFP is expressed in an anterior>posterior gradient in the SC. Furthermore, when these mice were crossed with the transgenic mice expressing Cre under the EphA8 promoter, it was evident that a GFP expression cassette was eliminated, and that human ephrin-A5 was ectopically expressed in the anterior region of the SC. This transgenic model would be useful to analyze the role of ephrin-A5 in the SC during the retinocollicular topography formation.
Animals ; Axons ; Chromosomes, Artificial, Bacterial ; Ephrin-A5 ; Homologous Recombination ; Humans ; Mice ; Mice, Transgenic ; Retina ; Superior Colliculi

Mostly of the sudden deaths, except in-hospital death and death within 48 hours of discharge, are declared in the emergency department by emergency physician. The purpose of this study is to review the protocol of cardiopulmonary resuscitation (CPR) in out-of-hospital cardiac arrest by understanding the cause of sudden death from autopsy results. A retrospective analysis was performed by 48 months of medical records from emergency department of a tertiary hospital. The analysis was made from the patient group which gone through autopsy in the main office of National Institute of Scientific Investigation. In the emergency department, 1913 patients were declared death and 43 patients have received autopsy and 19 (1.0%) were natural death. 14 partients received CPR in the natural death group, and 13 were specified as cardiovascular disease. Result of this study represents the importance of prehospital CPR in case of unexpected cardiac arrest patients. However to generalize this result, all dead patients must go through autopsies for medical purpose which the frequency alse should be increased.
Autopsy ; Cardiopulmonary Resuscitation ; Cardiovascular Diseases ; Death, Sudden ; Emergencies ; Heart Arrest ; Humans ; Medical Records ; Out-of-Hospital Cardiac Arrest ; Retrospective Studies ; Tertiary Care Centers

Purpose: We report a case of regressed retinal astrocytic hamartomas (RAHs) in tuberous sclerosis complex (TSC) patients by mammalian target of rapamycin inhibitor (everolimus) treatment. Case summary: A 12-year-old girl diagnosed with TSC visited for regular checkups. The patient had undergone regular fundus examinations every year after the finding of multiple RAHs in both eyes in the initial screening at 3 months of age. There was no change in the size or thickness of the lesions until she reached 10 years of age. Two months later, the patient started systemic everolimus (5 mg, AFINITOR®, Novartis, Basel, Switzerland) treatment for 17 months under the care of a pediatric neurologist for seizure control. Subsequent fundus examination and measurements by optical coherence tomography showed improvement in the maximal thickness of all lesions, specifically, a reduction of 25%. Conclusions mTOR inhibitors are targeted agents that regress systemic hamartomas and control convulsions without serious side effects in TSC patients. The particular one used in this study, Afinitor everolimus, reduced the RAH size in our patient. Thus, in cases where an RAH affects vision due to its location, everolimus can considered as a therapeutic option.

Purpose: To evaluate the usefulness of video-oculographic waveform analysis in nystagmus patients. Methods: We carried out an observational case study in 18 patients (age, 7-32 years) with nystagmus who visited our clinic regularly for more than 1 year. Video-oculography (VOG) recording was performed (SLVNG®; SLMED, Seoul, Korea/3D Video-Oculography®; SMI, Teltow, Germany), and the velocity, peak velocity, and frequency of ocular movement were evaluated. The results of VOG analysis were compared to the diagnosis based on clinical examination and video recording. Results: Eleven patients showed corresponding results, while the results differed between presumed diagnosis by VOG waveform analysis and clinical diagnosis in seven patients. Two of the discordant group showed additional waveforms that were not found on clinical examination. In addition, the number of inverse cases was two. The VOG waveform results corresponded to the diagnosis based on video recording in 16 patients. Conclusions Video-oculography is useful for diagnosis and management of nystagmus patients as it is noninvasive, comfortable, and can be performed in patients with difficulties with electronystagmography, such as pediatric patients. In addition, its waveform analysis and quantification are reliable taking into consideration diagnosis based on clinical examination and video recording.

Purpose: We report a case of regressed retinal astrocytic hamartomas (RAHs) in tuberous sclerosis complex (TSC) patients by mammalian target of rapamycin inhibitor (everolimus) treatment. Case summary: A 12-year-old girl diagnosed with TSC visited for regular checkups. The patient had undergone regular fundus examinations every year after the finding of multiple RAHs in both eyes in the initial screening at 3 months of age. There was no change in the size or thickness of the lesions until she reached 10 years of age. Two months later, the patient started systemic everolimus (5 mg, AFINITOR®, Novartis, Basel, Switzerland) treatment for 17 months under the care of a pediatric neurologist for seizure control. Subsequent fundus examination and measurements by optical coherence tomography showed improvement in the maximal thickness of all lesions, specifically, a reduction of 25%. Conclusions mTOR inhibitors are targeted agents that regress systemic hamartomas and control convulsions without serious side effects in TSC patients. The particular one used in this study, Afinitor everolimus, reduced the RAH size in our patient. Thus, in cases where an RAH affects vision due to its location, everolimus can considered as a therapeutic option.

Purpose: To evaluate the usefulness of video-oculographic waveform analysis in nystagmus patients. Methods: We carried out an observational case study in 18 patients (age, 7-32 years) with nystagmus who visited our clinic regularly for more than 1 year. Video-oculography (VOG) recording was performed (SLVNG®; SLMED, Seoul, Korea/3D Video-Oculography®; SMI, Teltow, Germany), and the velocity, peak velocity, and frequency of ocular movement were evaluated. The results of VOG analysis were compared to the diagnosis based on clinical examination and video recording. Results: Eleven patients showed corresponding results, while the results differed between presumed diagnosis by VOG waveform analysis and clinical diagnosis in seven patients. Two of the discordant group showed additional waveforms that were not found on clinical examination. In addition, the number of inverse cases was two. The VOG waveform results corresponded to the diagnosis based on video recording in 16 patients. Conclusions Video-oculography is useful for diagnosis and management of nystagmus patients as it is noninvasive, comfortable, and can be performed in patients with difficulties with electronystagmography, such as pediatric patients. In addition, its waveform analysis and quantification are reliable taking into consideration diagnosis based on clinical examination and video recording.

The fruit of the black raspberry (Rubus coreanus Miquel) has been employed in traditional medicine, and recent studies have demonstrated its measureable biological activities. However, the root of the black raspberry has not been studied. Therefore, in this study, we evaluated the anti-inflammatory and antibacterial properties of the root and unripe fruit polyphenols of the black raspberry. Both polyphenols proved to have anti-inflammatory activity as evidenced by the decreased nitric oxide (NO), cytokines (IL-1beta , IL-6, and IL-10) and prostaglandin E2 (PGE2) levels in lipopolysaccharide (LPS)-stimulated RAW 264.7 murine macrophages. However, root polyphenols showed stronger anti-inflammatory activity than fruit polyphenols. LPS-induced mRNA and protein expressions of inducible NO synthase (iNOS) and cyclooxygenase (COX)-2 levels were also decreased, confirming the anti-inflammatory activity. Root polyphenols showed lethal activity against methicillin-resistant Staphylococcus aureus (MRSA), carbapenem-resistant Acinetobacter baumannii (CRAB), and Bacillus anthracis. In contrast, the black raspberry fruit did not demonstrate these properties. These data provide the first demonstration that black raspberry root has potential anti-inflammatory and anti-superbacterial properties that can be exploited as alternatives for use in the food and cosmetic industries and/or as pharmaceuticals.
Acinetobacter baumannii ; Bacillus anthracis ; Cosmetics ; Cytokines ; Dinoprostone ; Fruit ; Interleukin-6 ; Macrophages ; Medicine, Traditional ; Methicillin-Resistant Staphylococcus aureus ; Nitric Oxide ; Nitric Oxide Synthase ; Polyphenols ; Prostaglandin-Endoperoxide Synthases ; RNA, Messenger

PURPOSE: This descriptive study was done to identify the academic achievement, self-directed learning (SDL), and critical thinking disposition (CTD) of nursing students according to their learning styles. METHOD: The participants were 240 nursing students. Data were collected using structured questionnaires which included Kolb's Learning Style Inventory, Academic Achievement in Fundamental Nursing and Health Assessment, Self Directed Learning Readiness Scale, and California Critical Thinking Disposition Inventory. Data were analyzed using chi2 test, ANOVA, Pearson' correlation coefficients, and Spearman rank correlation coefficient. RESULTS: One third of respondents were shown to be Convergers in their learning style (33.3%). The Academic Achievement of students who were Convergers was significantly higher than those who were Divergers or Accommodators (F=5.95, p=.001). The SDL and CTD of students who were Convergers were significantly higher than Divergers and Assimilators (F=9.67, p<.001 and F=8.42, p<.001). No significant correlations were found between Academic Achievement and SDL or CTD, but a statistically significant positive correlation was found between SDL and CTD (r=.68, p<.001). CONCLUSION: The findings of this study indicate that learning style influences academic achievement, SDL and CTD.
Achievement ; California ; Surveys and Questionnaires ; Humans ; Learning ; Self-Assessment ; Students, Nursing ; Thinking

In June 2022, the first monkeypox case was reported as imported into Korea. The general public asked whether they should get vaccinated against monkeypox because of the recent COVID-19 vaccination experience. As of the current monkeypox outbreak situation, a ring vaccination strategy for the high-risk group is more appropriate than the mass population vaccination with smallpox vaccines. Therefore, identifying the proper target group by available vaccines based on the risk and benefit analysis is a key issue of the vaccination program. In addition, the target group should be reviewed by the epidemiological situation of the jurisdiction along with the updated evidence of the monkeypox virus on transmission dynamics, severity, and fatality.

Objectives: With the recent global mpox outbreak, the JYNNEOS vaccine (Modified VacciniaAnkara-Bavarian Nordic) was developed as a third-generation smallpox vaccine and initiallyfavored for mpox immunization. Vaccine-associated side effects contribute to vaccinehesitancy. Consequently, tracking adverse events post-immunization is crucial for safety management. This study used data from the national active vaccine safety surveillance conducted in Korea from August 25 to November 24, 2022 to detect potential safety signals and adverse events. Methods: Data on health conditions following vaccination were gathered from web-based surveys and reported via active surveillance through the Immunization Registry Information System. This follow-up system functioned via a text message link, surveying adverse events and health conditions beginning on the second day post-vaccination. Information aboutspecific adverse events, including both local and systemic reactions, was collected. Results: The study included 86 healthcare workers who had received at least 1 dose of the JYNNEOS vaccine. Among the respondents, 79.1% reported experiencing at least 1 adverse event, with the majority being local reactions at the injection site. The incidence of adverse events was higher following the first dose (67.9%) than after the second dose (34.4%). The most frequently reported adverse event for both doses was mild pain at the injection site. Conclusion The study provides crucial information on the safety of the JYNNEOS vaccine, demonstrating that most adverse events were manageable and predominantly localized to the injection site. Nonetheless, additional research is needed on the safety of various vaccineadministration techniques and the vaccine’s effects on broader demographics.