1.The association between the consumption of raw Kudoa septempunctata–infected farmed Paralichthys olivaceus and gastrointestinal symptoms
Jihye AN ; En-Joo JUNG ; Soon-Ok LEE ; Jong-Hoon CHOI ; JungHee KIM ; Sung-Jong HONG ; Sung-Hee HONG ; Jung-Won JU ; Hyungjun KIM ; Kwang-Pil KO
Epidemiology and Health 2026;48(1):e2026003-
OBJECTIVES:
Kudoa septempunctata has been identified as the causative agent of food poisoning following the consumption of raw farmed Paralichthys olivaceus. However, cohort studies providing robust evidence for an association between K. septempunctata and gastrointestinal symptoms remain limited. This prospective cohort study investigated the association between the consumption of K. septempunctata–infected farmed P. olivaceus and the occurrence of gastrointestinal symptoms.
METHODS:
Individuals who purchased raw farmed P. olivaceus between 2020 and 2021 were selected as the study population. Study data included 2 rounds of questionnaire surveys administered before and after consumption, 2 muscle specimens obtained from each purchased fish, and human biological specimens collected from individuals who developed gastrointestinal symptoms within 24 hours after consumption. Data were analyzed using the chi-square test and t-test, and the association between consumption of K. septempunctata–infected farmed P. olivaceus and gastrointestinal symptoms was evaluated using relative risk estimates between exposure groups.
RESULTS:
The relative risk of gastrointestinal symptoms associated with exposure to K. septempunctata–infected P. olivaceus ranged from 71.2 (95% confidence interval [CI], 27.0 to 178.6) to 124.5 (95% CI, 43.5 to 355.0) across the 2 case definitions. A strong and statistically significant association was observed between exposure to K. septempunctata–infected P. olivaceus and the development of acute gastrointestinal symptoms.
CONCLUSIONS
These findings indicate both an association and a causal relationship between consumption of K. septempunctata–infected farmed P. olivaceus and the onset of gastrointestinal symptoms.
2.Impact of iron-deficiency anemia on short-term outcomes after resection of colorectal cancer liver metastasis: a US National (Nationwide) Inpatient Sample (NIS) analysis
Ko-Chao LEE ; Yu-Li SU ; Kuen-Lin WU ; Kung-Chuan CHENG ; Ling-Chiao SONG ; Chien-En TANG ; Hong-Hwa CHEN ; Kuan-Chih CHUNG
Annals of Coloproctology 2025;41(2):119-126
Purpose:
Colorectal cancer (CRC) often spreads to the liver, necessitating surgical treatment for CRC liver metastasis (CRLM). Iron-deficiency anemia is common in CRC patients and is associated with fatigue and weakness. This study investigated the effects of iron-deficiency anemia on the outcomes of surgical resection of CRLM.
Methods:
This population-based, retrospective study evaluated data from adults ≥20 years old with CRLM who underwent hepatic resection. All patient data were extracted from the 2005–2018 US National (Nationwide) Inpatient Sample (NIS) database. The outcome measures were in-hospital outcomes including 30-day mortality, unfavorable discharge, and prolonged length of hospital stay (LOS), and short-term complications such as bleeding and infection. Associations between iron-deficiency anemia and outcomes were determined using logistic regression analysis.
Results:
Data from 7,749 patients (representing 37,923 persons in the United States after weighting) were analyzed. Multivariable analysis revealed that iron-deficiency anemia was significantly associated with an increased risk of prolonged LOS (adjusted odds ratio [aOR], 2.76; 95% confidence interval [CI], 2.30–3.30), unfavorable discharge (aOR, 2.42; 95% CI, 1.83–3.19), bleeding (aOR, 5.05; 95% CI, 2.92–8.74), sepsis (aOR, 1.60; 95% CI, 1.04–2.46), pneumonia (aOR, 2.54; 95% CI, 1.72–3.74), and acute kidney injury (aOR, 1.71; 95% CI, 1.24–2.35). Subgroup analyses revealed consistent associations between iron-deficiency anemia and prolonged LOS across age, sex, and obesity status categories.
Conclusion
In patients undergoing hepatic resection for CRLM, iron-deficiency anemia is an independent risk factor for prolonged LOS, unfavorable discharge, and several critical postoperative complications. These findings underscore the need for proactive anemia management to optimize surgical outcomes.
3.Impact of iron-deficiency anemia on short-term outcomes after resection of colorectal cancer liver metastasis: a US National (Nationwide) Inpatient Sample (NIS) analysis
Ko-Chao LEE ; Yu-Li SU ; Kuen-Lin WU ; Kung-Chuan CHENG ; Ling-Chiao SONG ; Chien-En TANG ; Hong-Hwa CHEN ; Kuan-Chih CHUNG
Annals of Coloproctology 2025;41(2):119-126
Purpose:
Colorectal cancer (CRC) often spreads to the liver, necessitating surgical treatment for CRC liver metastasis (CRLM). Iron-deficiency anemia is common in CRC patients and is associated with fatigue and weakness. This study investigated the effects of iron-deficiency anemia on the outcomes of surgical resection of CRLM.
Methods:
This population-based, retrospective study evaluated data from adults ≥20 years old with CRLM who underwent hepatic resection. All patient data were extracted from the 2005–2018 US National (Nationwide) Inpatient Sample (NIS) database. The outcome measures were in-hospital outcomes including 30-day mortality, unfavorable discharge, and prolonged length of hospital stay (LOS), and short-term complications such as bleeding and infection. Associations between iron-deficiency anemia and outcomes were determined using logistic regression analysis.
Results:
Data from 7,749 patients (representing 37,923 persons in the United States after weighting) were analyzed. Multivariable analysis revealed that iron-deficiency anemia was significantly associated with an increased risk of prolonged LOS (adjusted odds ratio [aOR], 2.76; 95% confidence interval [CI], 2.30–3.30), unfavorable discharge (aOR, 2.42; 95% CI, 1.83–3.19), bleeding (aOR, 5.05; 95% CI, 2.92–8.74), sepsis (aOR, 1.60; 95% CI, 1.04–2.46), pneumonia (aOR, 2.54; 95% CI, 1.72–3.74), and acute kidney injury (aOR, 1.71; 95% CI, 1.24–2.35). Subgroup analyses revealed consistent associations between iron-deficiency anemia and prolonged LOS across age, sex, and obesity status categories.
Conclusion
In patients undergoing hepatic resection for CRLM, iron-deficiency anemia is an independent risk factor for prolonged LOS, unfavorable discharge, and several critical postoperative complications. These findings underscore the need for proactive anemia management to optimize surgical outcomes.
4.Impact of iron-deficiency anemia on short-term outcomes after resection of colorectal cancer liver metastasis: a US National (Nationwide) Inpatient Sample (NIS) analysis
Ko-Chao LEE ; Yu-Li SU ; Kuen-Lin WU ; Kung-Chuan CHENG ; Ling-Chiao SONG ; Chien-En TANG ; Hong-Hwa CHEN ; Kuan-Chih CHUNG
Annals of Coloproctology 2025;41(2):119-126
Purpose:
Colorectal cancer (CRC) often spreads to the liver, necessitating surgical treatment for CRC liver metastasis (CRLM). Iron-deficiency anemia is common in CRC patients and is associated with fatigue and weakness. This study investigated the effects of iron-deficiency anemia on the outcomes of surgical resection of CRLM.
Methods:
This population-based, retrospective study evaluated data from adults ≥20 years old with CRLM who underwent hepatic resection. All patient data were extracted from the 2005–2018 US National (Nationwide) Inpatient Sample (NIS) database. The outcome measures were in-hospital outcomes including 30-day mortality, unfavorable discharge, and prolonged length of hospital stay (LOS), and short-term complications such as bleeding and infection. Associations between iron-deficiency anemia and outcomes were determined using logistic regression analysis.
Results:
Data from 7,749 patients (representing 37,923 persons in the United States after weighting) were analyzed. Multivariable analysis revealed that iron-deficiency anemia was significantly associated with an increased risk of prolonged LOS (adjusted odds ratio [aOR], 2.76; 95% confidence interval [CI], 2.30–3.30), unfavorable discharge (aOR, 2.42; 95% CI, 1.83–3.19), bleeding (aOR, 5.05; 95% CI, 2.92–8.74), sepsis (aOR, 1.60; 95% CI, 1.04–2.46), pneumonia (aOR, 2.54; 95% CI, 1.72–3.74), and acute kidney injury (aOR, 1.71; 95% CI, 1.24–2.35). Subgroup analyses revealed consistent associations between iron-deficiency anemia and prolonged LOS across age, sex, and obesity status categories.
Conclusion
In patients undergoing hepatic resection for CRLM, iron-deficiency anemia is an independent risk factor for prolonged LOS, unfavorable discharge, and several critical postoperative complications. These findings underscore the need for proactive anemia management to optimize surgical outcomes.
5.Impact of iron-deficiency anemia on short-term outcomes after resection of colorectal cancer liver metastasis: a US National (Nationwide) Inpatient Sample (NIS) analysis
Ko-Chao LEE ; Yu-Li SU ; Kuen-Lin WU ; Kung-Chuan CHENG ; Ling-Chiao SONG ; Chien-En TANG ; Hong-Hwa CHEN ; Kuan-Chih CHUNG
Annals of Coloproctology 2025;41(2):119-126
Purpose:
Colorectal cancer (CRC) often spreads to the liver, necessitating surgical treatment for CRC liver metastasis (CRLM). Iron-deficiency anemia is common in CRC patients and is associated with fatigue and weakness. This study investigated the effects of iron-deficiency anemia on the outcomes of surgical resection of CRLM.
Methods:
This population-based, retrospective study evaluated data from adults ≥20 years old with CRLM who underwent hepatic resection. All patient data were extracted from the 2005–2018 US National (Nationwide) Inpatient Sample (NIS) database. The outcome measures were in-hospital outcomes including 30-day mortality, unfavorable discharge, and prolonged length of hospital stay (LOS), and short-term complications such as bleeding and infection. Associations between iron-deficiency anemia and outcomes were determined using logistic regression analysis.
Results:
Data from 7,749 patients (representing 37,923 persons in the United States after weighting) were analyzed. Multivariable analysis revealed that iron-deficiency anemia was significantly associated with an increased risk of prolonged LOS (adjusted odds ratio [aOR], 2.76; 95% confidence interval [CI], 2.30–3.30), unfavorable discharge (aOR, 2.42; 95% CI, 1.83–3.19), bleeding (aOR, 5.05; 95% CI, 2.92–8.74), sepsis (aOR, 1.60; 95% CI, 1.04–2.46), pneumonia (aOR, 2.54; 95% CI, 1.72–3.74), and acute kidney injury (aOR, 1.71; 95% CI, 1.24–2.35). Subgroup analyses revealed consistent associations between iron-deficiency anemia and prolonged LOS across age, sex, and obesity status categories.
Conclusion
In patients undergoing hepatic resection for CRLM, iron-deficiency anemia is an independent risk factor for prolonged LOS, unfavorable discharge, and several critical postoperative complications. These findings underscore the need for proactive anemia management to optimize surgical outcomes.
6.Impact of iron-deficiency anemia on short-term outcomes after resection of colorectal cancer liver metastasis: a US National (Nationwide) Inpatient Sample (NIS) analysis
Ko-Chao LEE ; Yu-Li SU ; Kuen-Lin WU ; Kung-Chuan CHENG ; Ling-Chiao SONG ; Chien-En TANG ; Hong-Hwa CHEN ; Kuan-Chih CHUNG
Annals of Coloproctology 2025;41(2):119-126
Purpose:
Colorectal cancer (CRC) often spreads to the liver, necessitating surgical treatment for CRC liver metastasis (CRLM). Iron-deficiency anemia is common in CRC patients and is associated with fatigue and weakness. This study investigated the effects of iron-deficiency anemia on the outcomes of surgical resection of CRLM.
Methods:
This population-based, retrospective study evaluated data from adults ≥20 years old with CRLM who underwent hepatic resection. All patient data were extracted from the 2005–2018 US National (Nationwide) Inpatient Sample (NIS) database. The outcome measures were in-hospital outcomes including 30-day mortality, unfavorable discharge, and prolonged length of hospital stay (LOS), and short-term complications such as bleeding and infection. Associations between iron-deficiency anemia and outcomes were determined using logistic regression analysis.
Results:
Data from 7,749 patients (representing 37,923 persons in the United States after weighting) were analyzed. Multivariable analysis revealed that iron-deficiency anemia was significantly associated with an increased risk of prolonged LOS (adjusted odds ratio [aOR], 2.76; 95% confidence interval [CI], 2.30–3.30), unfavorable discharge (aOR, 2.42; 95% CI, 1.83–3.19), bleeding (aOR, 5.05; 95% CI, 2.92–8.74), sepsis (aOR, 1.60; 95% CI, 1.04–2.46), pneumonia (aOR, 2.54; 95% CI, 1.72–3.74), and acute kidney injury (aOR, 1.71; 95% CI, 1.24–2.35). Subgroup analyses revealed consistent associations between iron-deficiency anemia and prolonged LOS across age, sex, and obesity status categories.
Conclusion
In patients undergoing hepatic resection for CRLM, iron-deficiency anemia is an independent risk factor for prolonged LOS, unfavorable discharge, and several critical postoperative complications. These findings underscore the need for proactive anemia management to optimize surgical outcomes.
8.Rapidly increasing liver progenitor cell numbers in human regenerating liver after portal vein ligation and liver partition
Kuo-Hua LIN ; Hui-Ting HSU ; Tsung-Han TENG ; Ping-Yi LIN ; Chih-Jan KO ; Chia-En HSIEH ; Yao-Li CHEN
The Malaysian Journal of Pathology 2017;39(3):289-291
Background: Liver regeneration is dependent on the proliferation of hepatocytes. Hepatic progenitorcells are intra-hepatic precursor cells capable of differentiating into hepatocytes or biliary cells.Although liver progenitor cell proliferation during the regenerative process has been observed in animalmodels of severe liver injury, it has never been observed in vivo in humans because it is unethicalto take multiple biopsy specimens for the purpose of studying the proliferation of liver progenitorcells and the roles they play in liver regeneration. Associating liver partition and portal vein ligationfor staged hepatectomy (ALPPS) is a staged procedure for inducing remnant liver hypertrophy sothat major hepatectomy can be performed safely. This staged procedure allows for liver biopsyspecimens to be taken before and after the liver begins to regenerate. Case presentation: The liverprogenitor cell proliferation is observed in a patient undergoing ALPPS for a metastatic hepatictumour. Liver biopsy is acquired before and after ALPPS for the calculation of average number ofliver progenitor cell under high magnification examination by stain of immunomarkers. This is thefirst in vivo evidence of growing liver progenitor cells demonstrated in a regenerating human liver.
9.Intrathecal Administration of Mesenchymal Stem Cells Reduces the Reactive Oxygen Species and Pain Behavior in Neuropathic Rats.
En Ji ZHANG ; Chang Hwa SONG ; Young Kwon KO ; Won Hyung LEE
The Korean Journal of Pain 2014;27(3):239-245
BACKGROUND: Neuropathic pain induced by spinal or peripheral nerve injury is very resistant to common pain killers, nerve block, and other pain management approaches. Recently, several studies using stem cells suggested a new way to control the neuropatic pain. In this study, we used the spinal nerve L5 ligation (SNL) model to investigate whether intrathecal rat mesenchymal stem cells (rMSCs) were able to decrease pain behavior, as well as the relationship between rMSCs and reactive oxygen species (ROS). METHODS: Neuropathic pain of the left hind paw was induced by unilateral SNL in Sprague-Dawley rats (n = 10 in each group). Mechanical sensitivity was assessed using Von Frey filaments at 3, 7, 10, 12, 14, 17, and 24 days post-ligation. rMSCs (10 microl, 1 x 105) or phosphate buffer saline (PBS, 10 microl) was injected intrathecally at 7 days post-ligation. Dihydroethidium (DHE), an oxidative fluorescent dye, was used to detect ROS at 24 days post-ligation. RESULTS: Tight ligation of the L5 spinal nerve induced allodynia in the left hind paw after 3 days post-ligation. ROS expression was increased significantly (P < 0.05) in spinal dorsal horn of L5. Intrathecal rMSCs significantly (P < 0.01) alleviated the allodynia at 10 days after intrathecal injection (17 days post-ligation). Intrathecal rMSCs administration significantly (P < 0.05) reduced ROS expression in the spinal dorsal horn. CONCLUSIONS: These results suggest that rMSCs may modulate neuropathic pain generation through ROS expression after spinal nerve ligation.
Animals
;
Horns
;
Hyperalgesia
;
Injections, Spinal
;
Ligation
;
Mesenchymal Stromal Cells*
;
Nerve Block
;
Neuralgia
;
Pain Management
;
Peripheral Nerve Injuries
;
Rats*
;
Rats, Sprague-Dawley
;
Reactive Oxygen Species*
;
Spinal Nerves
;
Stem Cells
10.The Incidence of Birthmarks in Korean Newborn Infants.
Seung Woo NAM ; Sun Young KO ; Yeon Kyung LEE ; Son Moon SHIN ; En Hyung KIM
Neonatal Medicine 2014;21(3):151-157
PURPOSE: Birthmarks are commonly observed during neonatal period and its prevalence varies between races and countries. Most skin lesions are transient and not require medical treatment. But some birthmarks have potential medical significance and may be the first sign of systemic medical problems. We carried out a prospective study to determine the prevalence of birthmarks in Korean newborn infants. METHODS: From October 2012 to January 2013, 1,964 Korean newborn infants who were born in Cheil General Hospital, Kwandong University College of Medicine were evaluated for the presence of birthmarks within 48 hours after birth. RESULTS: Among 1,964 newborn infants, 980 (49.9%) infants were male and 984 (50.1%) were female. The most common pigmentary birthmark was Mongolian spot (97.1%), which was mostly presented on sacrogluteal area, and was followed by nevocellular nevi (0.8%), cafe-au-lait spot (0.8%), and sebaceous nevi (0.2%). Among vascular birthmarks, the most common lesion was salmon patch (30.8%), and followed by port-wine stain (0.2%) and hemangioma (0.2%). The common other lesions were sebaceous hyperplasia (37.4%), erythema toxicum neonatorum (10.2%), milia (4.1%), skin appendage (2.6%), anal dimple (1.2%), auricular pit (0.9%), miliaria (0.5%), aplasia cutis congenita (0.2%) in the order of frequency. CONCLUSION: We studied the prevalence of the birthmarks in Korean newborn infants. The most common pigmentary birth mark was mongolian spot, and the most common vascular birthmark was salmon patch in Korean newborn infants.
Cafe-au-Lait Spots
;
Continental Population Groups
;
Ectodermal Dysplasia
;
Erythema
;
Female
;
Hemangioma
;
Hospitals, General
;
Humans
;
Hyperplasia
;
Incidence*
;
Infant
;
Infant, Newborn*
;
Male
;
Miliaria
;
Mongolian Spot
;
Nevus
;
Parturition
;
Port-Wine Stain
;
Prevalence
;
Prospective Studies
;
Salmon
;
Skin

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