1.Microglial galectin-3 increases with aging in the mouse hippocampus
Hyun Joo SHIN ; So Jeong LEE ; Hyeong Seok AN ; Ha Nyeoung CHOI ; Eun Ae JEONG ; Jaewoong LEE ; Kyung Eun KIM ; Bong-Hoi CHOI ; Seung Pil YUN ; Dawon KANG ; Sang Soo KANG ; Gu Seob ROH
The Korean Journal of Physiology and Pharmacology 2025;29(2):215-225
Microglial activation during aging is associated with neuroinflammation and cognitive impairment. Galectin-3 plays a crucial role in microglial activation and phagocytosis. However, the role of galectin-3 in the aged brain is not completely understood. In the present study, we investigated aging-related mechanisms and microglial galectin-3 expression in the mouse hippocampus using female 6-, 12-, and 24-month-old C57BL/6 mice. Western blot analysis revealed neurodegeneration, blood-brain barrier leakage, and increased levels of neuroinflammation-related proteins in 24-month-old mice compared to 6- and 12-month-old mice. Immunohistochemistry revealed an increase in activated microglia in the hippocampus of 24-month-old mice compared to 6- and 12-month-old mice. Furthermore, we found more galectin-3 and triggering receptor expressed on myeloid cells-2-positive microglia in 24-month-old mice compared to 6- and 12-month-old mice. Using primary mouse microglial cells, galectin -3 was also increased by lipopolysaccharide treatment. These findings suggest that galectin-3 may play an important role in microglial activation and neuroinflammation during brain aging.
2.The impact of the COVID-19 pandemic on clinical practices related to colorectal cancer and colonoscopy in South Korea: a nationwide population-based study
Jin Young YOON ; Moon Hyung LEE ; Min Seob KWAK ; Jae Myung CHA
Intestinal Research 2025;23(1):85-95
Background/Aims:
Despite of the coronavirus disease 2019 (COVID-19) pandemic, there is little data regarding its impact on colorectal cancer (CRC)-related clinical practice. This study aimed to assess the changes in its impact during the COVID-19 pandemic.
Methods:
This was a retrospective national population-based study using the Health Insurance Review and Assessment database from January 2019 to December 2021. The number of patients in 2020 and 2021 was compared with those in 2019 for the diagnostic and therapeutic colonoscopy, CRC-related operation, and any treatment for CRC.
Results:
The annual number of patients undergoing diagnostic colonoscopies decreased by 6.9% in 2020 but increased 8.1% in 2021, compared to those in 2019; number of patients undergoing therapeutic colonoscopies increased by 6.0% and 37.7% in 2020 and 2021, respectively; number of patients operated for CRC decreased by 4.2% in 2020 and increased by 2.3% in 2021. The number of patients treated for CRC decreased by 2.8% in 2020 and increased by 4.4% in 2021. Diagnostic and therapeutic colonoscopies and any CRC-related treatment decreased by 43.8%, 37.5%, and 11.3% in March 2020, during the first surge of COVID-19, but increased by 26.0%, 58.1%, and 9.5% in June 2021, respectively. CRC-related operations decreased by 24.1% in April 2020 and increased by 12.6% in August 2021.
Conclusions
Negative impact of the COVID-19 pandemic on clinical practices related to CRC completely recovered within second year. It could be considered for the development of an optimal strategy on CRC management in response to the pandemic-driven crisis.
3.Microglial galectin-3 increases with aging in the mouse hippocampus
Hyun Joo SHIN ; So Jeong LEE ; Hyeong Seok AN ; Ha Nyeoung CHOI ; Eun Ae JEONG ; Jaewoong LEE ; Kyung Eun KIM ; Bong-Hoi CHOI ; Seung Pil YUN ; Dawon KANG ; Sang Soo KANG ; Gu Seob ROH
The Korean Journal of Physiology and Pharmacology 2025;29(2):215-225
Microglial activation during aging is associated with neuroinflammation and cognitive impairment. Galectin-3 plays a crucial role in microglial activation and phagocytosis. However, the role of galectin-3 in the aged brain is not completely understood. In the present study, we investigated aging-related mechanisms and microglial galectin-3 expression in the mouse hippocampus using female 6-, 12-, and 24-month-old C57BL/6 mice. Western blot analysis revealed neurodegeneration, blood-brain barrier leakage, and increased levels of neuroinflammation-related proteins in 24-month-old mice compared to 6- and 12-month-old mice. Immunohistochemistry revealed an increase in activated microglia in the hippocampus of 24-month-old mice compared to 6- and 12-month-old mice. Furthermore, we found more galectin-3 and triggering receptor expressed on myeloid cells-2-positive microglia in 24-month-old mice compared to 6- and 12-month-old mice. Using primary mouse microglial cells, galectin -3 was also increased by lipopolysaccharide treatment. These findings suggest that galectin-3 may play an important role in microglial activation and neuroinflammation during brain aging.
4.Microglial galectin-3 increases with aging in the mouse hippocampus
Hyun Joo SHIN ; So Jeong LEE ; Hyeong Seok AN ; Ha Nyeoung CHOI ; Eun Ae JEONG ; Jaewoong LEE ; Kyung Eun KIM ; Bong-Hoi CHOI ; Seung Pil YUN ; Dawon KANG ; Sang Soo KANG ; Gu Seob ROH
The Korean Journal of Physiology and Pharmacology 2025;29(2):215-225
Microglial activation during aging is associated with neuroinflammation and cognitive impairment. Galectin-3 plays a crucial role in microglial activation and phagocytosis. However, the role of galectin-3 in the aged brain is not completely understood. In the present study, we investigated aging-related mechanisms and microglial galectin-3 expression in the mouse hippocampus using female 6-, 12-, and 24-month-old C57BL/6 mice. Western blot analysis revealed neurodegeneration, blood-brain barrier leakage, and increased levels of neuroinflammation-related proteins in 24-month-old mice compared to 6- and 12-month-old mice. Immunohistochemistry revealed an increase in activated microglia in the hippocampus of 24-month-old mice compared to 6- and 12-month-old mice. Furthermore, we found more galectin-3 and triggering receptor expressed on myeloid cells-2-positive microglia in 24-month-old mice compared to 6- and 12-month-old mice. Using primary mouse microglial cells, galectin -3 was also increased by lipopolysaccharide treatment. These findings suggest that galectin-3 may play an important role in microglial activation and neuroinflammation during brain aging.
5.The impact of the COVID-19 pandemic on clinical practices related to colorectal cancer and colonoscopy in South Korea: a nationwide population-based study
Jin Young YOON ; Moon Hyung LEE ; Min Seob KWAK ; Jae Myung CHA
Intestinal Research 2025;23(1):85-95
Background/Aims:
Despite of the coronavirus disease 2019 (COVID-19) pandemic, there is little data regarding its impact on colorectal cancer (CRC)-related clinical practice. This study aimed to assess the changes in its impact during the COVID-19 pandemic.
Methods:
This was a retrospective national population-based study using the Health Insurance Review and Assessment database from January 2019 to December 2021. The number of patients in 2020 and 2021 was compared with those in 2019 for the diagnostic and therapeutic colonoscopy, CRC-related operation, and any treatment for CRC.
Results:
The annual number of patients undergoing diagnostic colonoscopies decreased by 6.9% in 2020 but increased 8.1% in 2021, compared to those in 2019; number of patients undergoing therapeutic colonoscopies increased by 6.0% and 37.7% in 2020 and 2021, respectively; number of patients operated for CRC decreased by 4.2% in 2020 and increased by 2.3% in 2021. The number of patients treated for CRC decreased by 2.8% in 2020 and increased by 4.4% in 2021. Diagnostic and therapeutic colonoscopies and any CRC-related treatment decreased by 43.8%, 37.5%, and 11.3% in March 2020, during the first surge of COVID-19, but increased by 26.0%, 58.1%, and 9.5% in June 2021, respectively. CRC-related operations decreased by 24.1% in April 2020 and increased by 12.6% in August 2021.
Conclusions
Negative impact of the COVID-19 pandemic on clinical practices related to CRC completely recovered within second year. It could be considered for the development of an optimal strategy on CRC management in response to the pandemic-driven crisis.
6.Microglial galectin-3 increases with aging in the mouse hippocampus
Hyun Joo SHIN ; So Jeong LEE ; Hyeong Seok AN ; Ha Nyeoung CHOI ; Eun Ae JEONG ; Jaewoong LEE ; Kyung Eun KIM ; Bong-Hoi CHOI ; Seung Pil YUN ; Dawon KANG ; Sang Soo KANG ; Gu Seob ROH
The Korean Journal of Physiology and Pharmacology 2025;29(2):215-225
Microglial activation during aging is associated with neuroinflammation and cognitive impairment. Galectin-3 plays a crucial role in microglial activation and phagocytosis. However, the role of galectin-3 in the aged brain is not completely understood. In the present study, we investigated aging-related mechanisms and microglial galectin-3 expression in the mouse hippocampus using female 6-, 12-, and 24-month-old C57BL/6 mice. Western blot analysis revealed neurodegeneration, blood-brain barrier leakage, and increased levels of neuroinflammation-related proteins in 24-month-old mice compared to 6- and 12-month-old mice. Immunohistochemistry revealed an increase in activated microglia in the hippocampus of 24-month-old mice compared to 6- and 12-month-old mice. Furthermore, we found more galectin-3 and triggering receptor expressed on myeloid cells-2-positive microglia in 24-month-old mice compared to 6- and 12-month-old mice. Using primary mouse microglial cells, galectin -3 was also increased by lipopolysaccharide treatment. These findings suggest that galectin-3 may play an important role in microglial activation and neuroinflammation during brain aging.
7.The impact of the COVID-19 pandemic on clinical practices related to colorectal cancer and colonoscopy in South Korea: a nationwide population-based study
Jin Young YOON ; Moon Hyung LEE ; Min Seob KWAK ; Jae Myung CHA
Intestinal Research 2025;23(1):85-95
Background/Aims:
Despite of the coronavirus disease 2019 (COVID-19) pandemic, there is little data regarding its impact on colorectal cancer (CRC)-related clinical practice. This study aimed to assess the changes in its impact during the COVID-19 pandemic.
Methods:
This was a retrospective national population-based study using the Health Insurance Review and Assessment database from January 2019 to December 2021. The number of patients in 2020 and 2021 was compared with those in 2019 for the diagnostic and therapeutic colonoscopy, CRC-related operation, and any treatment for CRC.
Results:
The annual number of patients undergoing diagnostic colonoscopies decreased by 6.9% in 2020 but increased 8.1% in 2021, compared to those in 2019; number of patients undergoing therapeutic colonoscopies increased by 6.0% and 37.7% in 2020 and 2021, respectively; number of patients operated for CRC decreased by 4.2% in 2020 and increased by 2.3% in 2021. The number of patients treated for CRC decreased by 2.8% in 2020 and increased by 4.4% in 2021. Diagnostic and therapeutic colonoscopies and any CRC-related treatment decreased by 43.8%, 37.5%, and 11.3% in March 2020, during the first surge of COVID-19, but increased by 26.0%, 58.1%, and 9.5% in June 2021, respectively. CRC-related operations decreased by 24.1% in April 2020 and increased by 12.6% in August 2021.
Conclusions
Negative impact of the COVID-19 pandemic on clinical practices related to CRC completely recovered within second year. It could be considered for the development of an optimal strategy on CRC management in response to the pandemic-driven crisis.
8.Microglial galectin-3 increases with aging in the mouse hippocampus
Hyun Joo SHIN ; So Jeong LEE ; Hyeong Seok AN ; Ha Nyeoung CHOI ; Eun Ae JEONG ; Jaewoong LEE ; Kyung Eun KIM ; Bong-Hoi CHOI ; Seung Pil YUN ; Dawon KANG ; Sang Soo KANG ; Gu Seob ROH
The Korean Journal of Physiology and Pharmacology 2025;29(2):215-225
Microglial activation during aging is associated with neuroinflammation and cognitive impairment. Galectin-3 plays a crucial role in microglial activation and phagocytosis. However, the role of galectin-3 in the aged brain is not completely understood. In the present study, we investigated aging-related mechanisms and microglial galectin-3 expression in the mouse hippocampus using female 6-, 12-, and 24-month-old C57BL/6 mice. Western blot analysis revealed neurodegeneration, blood-brain barrier leakage, and increased levels of neuroinflammation-related proteins in 24-month-old mice compared to 6- and 12-month-old mice. Immunohistochemistry revealed an increase in activated microglia in the hippocampus of 24-month-old mice compared to 6- and 12-month-old mice. Furthermore, we found more galectin-3 and triggering receptor expressed on myeloid cells-2-positive microglia in 24-month-old mice compared to 6- and 12-month-old mice. Using primary mouse microglial cells, galectin -3 was also increased by lipopolysaccharide treatment. These findings suggest that galectin-3 may play an important role in microglial activation and neuroinflammation during brain aging.
9.Septic cerebral embolism following lumbar spine surgery in a 69-year-old man with a lumbar epidural abscess in Korea: a case report
The Ewha Medical Journal 2024;47(4):e57-
Septic embolism and stroke are serious complications in patients with sepsis and often necessitate urgent surgical intervention to control the source of infection. A 69-year-old man presented with severe pain in his back and left thigh. MRI revealed extensive posterior epidural or subdural abscesses extending from the cervical to the lumbar level, as well as an abscess in the iliopsoas muscle. The patient underwent urgent drainage of the abscesses and decompression of the lumbar spine.Postoperatively, he developed sudden-onset atrial fibrillation and altered mental status. Brain CT showed multiple embolic infarctions. His condition deteriorated due to persistent infection, leading to disseminated intravascular coagulation, acute kidney injury, and septic shock. This case highlights the risk of cerebral embolism and hemorrhagic complications in patients with sepsis who undergo surgery.Early recognition of individuals at high risk and comprehensive perioperative management are critical to reducing the likelihood of such complications.
10.Acute Gastropathy Associated with Bowel Preparation According to Age: Oral Sulfate Tablets versus 1-L Polyethylene Glycol with Ascorbic Acid
Jin Young YOON ; Su Bee PARK ; Moon Hyung LEE ; Min Seob KWAK ; Jae Myung CHA
The Korean Journal of Gastroenterology 2024;84(4):177-187
Background/Aims:
The use of 1-L polyethylene glycol with ascorbate (PEG/Asc) and oral sulfate tablets (OST) as low-volume bowel preparation agents has gradually increased. However, these agents may induce acute gastropathy during bowel preparation, particularly in elderly populations. This study aimed to compare the incidence of acute gastropathy of 1-L PEG/Asc and OST according to age, as well as efficacy and safety.
Methods:
This retrospective study included patients who underwent esophagogastroduodenoscopy (EGD) and colonoscopy for screening on the same day and underwent bowel preparation using OST or 1-L PEG/Asc. We collected EGD findings related to acute gastropathy, bowel-cleansing score using the Boston Bowel Preparation Scale (BBPS), polyp or adenoma detection rate (ADR), and laboratory parameters.
Results:
Of 4,711 patients, 1,758, 2,241, and 712 were in the younger (18–49 years), middle-aged (50–64 years), and older (≥65 years) groups, respectively. In all age groups, the OST group had higher rates of acute gastropathy than the 1-L PEG/Asc group. The younger-, middle-, and older-aged groups had OST and 1-L PEG/Asc usage rates of 42.9% and 11.6%, 41.2% and 16.0%, and 41.5% and 16.4%, respectively. Notably, in the younger group, the total BBPS and ADR scores were significantly higher in the OST group than in the 1-L PEG/Asc group; however, these did not differ in the other age groups.
Conclusions
Acute gastropathy was more strongly associated with OST than with 1-L PEG/Asc in all age groups. Therefore, physicians should consider acute gastropathy associated with low-volume agents in all age groups when performing bowel preparation.

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