1.Effect of Cannabidiol Oil on Weight Loss in Diet-Induced Obese Mice: Validation Study
Sae Saem HAN ; Shinn-Won LIM ; Sook-young WOO ; Su Jin LEE ; Doh Kwan KIM
Journal of Korean Neuropsychiatric Association 2022;61(4):281-290
Objectives:
This study aimed at investigating the pharmacological and physiological effects of cannabidiol (CBD) oil on weight loss in diet-induced obese (DIO) mice.
Methods:
A DIO mice model was constructed with 33 C57BL/6 male mice, aged six weeks, who had been fed a high-fat diet for 13 weeks. Subsequently, 20 mg/kg (n=11) or 60 mg/kg (n=11) of CBD oil or sesame seed oil (n=11) per day was given along with a high-fat diet for four weeks. The body weight of each subject was measured weekly, and venous blood was drawn for biochemistry and enzyme-linked immunoassay before and after the four-week trial period. An oral glucose tolerance test was performed to assess glucose metabolism. At the end of the CBD oil treatment, dual-energy X-ray absorptiometry was used to calculate body fat composition, and the mesenteric adipose tissue was measured as representative of the fat mass of each subject. For statistical analysis, we used the Kruskal-Wallis test, Turkey’s test using ranks and generalized estimating equations.
Results:
After administration of CBD oil (60 mg/kg) for four weeks, the DIO mice showed significant weight loss, compared to the sham control mice (p=0.027). Mice fed with 60 mg/kg of CBD oil also had a significant reduction in fat percentage (p=0.009) and mesenteric fat weight loss (p=0.024), compared to the sham control mice, even with higher food intake (p=0.029). Moreover, mice fed with 60 mg/kg of CBD oil showed a significant improvement in glucose tolerance (p=0.003) and lower plasma leptin levels (p=0.006).
Conclusion
This study shows that orally administered CBD oil induces weight loss in DIO mice. It has been postulated that CBD oil attenuates an over-activated endocannabinoid system, thereby increasing energy expenditure, and improving glucose metabolism and leptin resistance.
2.Pneumonia Caused by Adenovirus Genotype 55 in an Army Recruit Training Center.
Jin Gu YOON ; Saem Na LEE ; Jung Min LEE ; Ji Yun NOH ; Joon Young SONG ; Hee Jin CHEONG ; Woo Joo KIM
Korean Journal of Medicine 2016;90(4):365-368
Adenoviral pneumonia is rare in healthy adults. However, several cases were recently reported in a military training center in South Korea. Adenovirus genotype 3, 6, and 7 are predominant in South Korea. More recently, genotype 55, which emerged sporadically in China, has been reported in South Korea. In this study, we present a case of adenoviral pneumonia caused by genotype 55 in a healthy soldier from an army recruit training center in South Korea.
Adenoviridae*
;
Adult
;
China
;
Genotype*
;
Humans
;
Korea
;
Military Personnel
;
Pneumonia*
3.Expression of Major Histocompatibility Complex during Neuronal Differentiation of Somatic Cell Nuclear Transfer-Human Embryonic Stem Cells
Jin Saem LEE ; Jeoung Eun LEE ; Shin-Hye YU ; Taehoon CHUN ; Mi-Yoon CHANG ; Dong Ryul LEE ; Chang-Hwan PARK
International Journal of Stem Cells 2024;17(1):59-69
Human pluripotent stem cells (hPSCs) such as human embryonic stem cells (hESCs), induced pluripotent stem cells, and somatic cell nuclear transfer (SCNT)-hESCs can permanently self-renew while maintaining their capacity to differentiate into any type of somatic cells, thereby serving as an important cell source for cell therapy. However, there are persistent challenges in the application of hPSCs in clinical trials, where one of the most significant is graft rejection by the patient immune system in response to human leukocyte antigen (HLA) mismatch when transplants are obtained from an allogeneic (non-self) cell source. Homozygous SCNT-hESCs (homo-SCNT-hESCs) were used to simplify the clinical application and to reduce HLA mismatch. Here, we present a xeno-free protocol that confirms the efficient generation of neural precursor cells in hPSCs and also the differentiation of dopaminergic neurons. Additionally, there was no difference when comparing the HLA expression patterns of hESC, homo-SCNT-hESCs and hetero-SCNT-hESCs. We propose that there are no differences in the differentiation capacity and HLA expression among hPSCs that can be cultured in vitro. Thus, it is expected that homo-SCNT-hESCs will possess a wider range of applications when transplanted with neural precursor cells in the context of clinical trials.
4.Fatal Hemophagocytic Lymphohistiocytosis associated with Influenza B.
Saem Na LEE ; Jin Gu YOON ; Chi Hyun CHO ; Chul Won CHOI ; Jung Yoon CHOI ; Hee Jin CHEONG ; Woo Joo KIM
Korean Journal of Medicine 2016;91(1):88-91
Influenza infection may be complicated by various infectious or non-infectious diseases. Among them, hemophagocytic lympho-histiocytosis (HLH) is an uncommon hyperinflammatory syndrome caused by uncontrolled proliferation and activation of macrophages and lymphocytes, and it is often life threatening. A previously healthy male patient was suspected to have HLH after influenza B infection. The diagnosis was established based on clinical diagnostic criteria suggested in the HLH-2004 trial. Despite prompt antiviral therapy, the patient expired on day 19 of hospitalization. Influenza can thus be complicated by HLH. Due to the non-specific manifestations of HLH, clinical suspicion and early diagnosis are important.
Diagnosis
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Early Diagnosis
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Hospitalization
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Humans
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Influenza, Human*
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Lymphocytes
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Lymphohistiocytosis, Hemophagocytic*
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Macrophages
;
Male
5.Trend Analysis of Research Articles Published in the Korean Journal of Women Health Nursing from 2013 to 2017.
Young Jin LEE ; Seo Yun KIM ; Saem Yi KANG ; Yoo Jeong KANG ; Lan JIN ; Hee Yoen JUNG ; Hae Won KIM
Korean Journal of Women Health Nursing 2018;24(1):90-103
PURPOSE: To analyze articles published in the Korean Journal of Women Health Nursing from 2013 to 2017 to determine the latest research trends and understand how 2013 Korea Women's Health Statistics were reflected in journal articles. METHODS: A total of 130 studies were analyzed. Research design, types of research, research framework, research subjects, characteristics of quantitative research, characteristics of qualitative research, and keywords were analyzed using a structured analysis format. RESULTS: Quantitative and qualitative research accounted for 83.8% and 13% of these 130 studies analyzed, respectively. Non-experimental and experimental research accounted for 70.7% and 13.1% of these studies, respectively. The most frequent study subjects were childbearing women (62.8%), including college students, mothers, and adults. A total of 69.1% of non-experimental research and 88.2% of experimental research used convenience sampling. Questionnaires were most frequently used for data collection. The most frequent keyword domain involved health-related concepts (41%) among nine domains and the most frequently used keyword was “women.” CONCLUSION: This study suggest that further experimental research should be conducted in the future. Also, adolescent and the elderly women should be focused on as subjects in future studies based on results of 2013 Korean Women's Health Statistics.
Adolescent
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Adult
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Aged
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Data Collection
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Female
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Humans
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Korea
;
Mothers
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Nursing*
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Qualitative Research
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Research Design
;
Research Subjects
;
Women's Health
6.Therapeutic Window for Cycloheximide Treatment after Hypoxic-Ischemic Brain Injury in Neonatal Rats.
Won Soon PARK ; Dong Kyung SUNG ; Saem KANG ; Soo Hyun KOO ; Yu Jin KIM ; Jang Hoon LEE ; Yun Sil CHANG ; Munhyang LEE
Journal of Korean Medical Science 2006;21(3):490-494
We have previously shown that cycloheximide significantly inhibited apoptosis, and reduced ensuing cerebral infarction in a newborn rat model of cerebral hypoxiaischemia. This study was performed to determine the therapeutic window for cycloheximide therapy. Seven day-old newborn rat pups were subjected to 100 min of 8% oxygen following a unilateral carotid artery ligation, and cycloheximide was given at 0, 6, 12 and 24 hr after hypoxia-ischemia (HI). Apoptosis or necrosis was identified by performing flow cytometry with a combination of fluorescinated annexin V and propidium iodide, and the extent of cerebral infarction was evaluated with triphenyl tetrazolium chloride (TTC) at 48 hr and 72 hr after HI, respectively. With cycloheximide treatment at 0 hr after HI, both apoptotic and necrotic cells by flow cytometry were significantly reduced, only necrotic cells were significantly reduced at 6 and 12 hr, and no protective effect was seen if administration was delayed until 24 hr after HI compared to the HI control group. Infarct volume, measured by TTC, was significantly reduced by 92% and 61% when cycloheximide was given at 0 or 6 hr after HI respectively; however, there was an insignificant trend in infarct reduction if cycloheximide was administered 12 hr after HI, and no protective effect was observed when administration was delayed until 24 hr after HI. In summary, cycloheximide was neuroprotective when given within 6 hr after HI in the developing newborn rat brain.
Rats, Sprague-Dawley
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Rats
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Protein Synthesis Inhibitors/therapeutic use
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Oxygen/metabolism
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Neuroprotective Agents/*therapeutic use
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Necrosis
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Hypoxia-Ischemia, Brain/*drug therapy
;
Hypoxia, Brain
;
Humans
;
Flow Cytometry
;
Cycloheximide/*therapeutic use
;
Brain Ischemia
;
Apoptosis
;
Animals, Newborn
;
Animals
7.Neuroprotective Effect of Cycloheximide on Hypoxic-Ischemic Brain Injury in Neonatal Rats.
Won Soon PARK ; Dong Kyung SUNG ; Saem KANG ; Soo Hyun KOO ; Yu Jin KIM ; Jang Hoon LEE ; Yun Sil CHANG ; Munhyang LEE
Journal of Korean Medical Science 2006;21(2):337-341
This study was done to determine the neuroprotective effect of cycloheximide on neonatal hypoxic-ischemic brain injury. Seven day-old newborn rat pups were subjected to 90 min of 8% oxygen following a unilateral carotid artery ligation. The extent of cerebral infarction was evaluated at 1 and 4 week of recovery. Apoptosis was identified by performing terminal deoxynucleotidyl transferase-mediated dUTP nick end-labeling (TUNEL) staining and flow cytometry with a combination of fluoresceinated annexin V and propidium iodide. Brain infarction area was significantly increased at 4 week compared to 1 week after hypoxia-ischemia in the control group. With cycloheximide treatment, the number of TUNEL positive cells in the ipsilateral cerebral cortex at 48 hr and peri-infarct area at 1 and 4 week of recovery was significantly reduced, both apoptotic and necrotic cells by flow cytometry 48 hr after the injury were significantly reduced, and the extent of cerebral infarction at 1 and 4 week of recovery was also significantly attenuated compared to the hypoxia-ischemia control group. In summary, our data suggest that apoptosis plays an important role in the development of delayed infarction, and inhibition of apoptosis with cycloheximide significantly reduces the ensuing cerebral infarction in a newborn rat pup model of cerebral hypoxia-ischemia.
Time Factors
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Rats, Sprague-Dawley
;
Rats
;
Propidium
;
Neuroprotective Agents/*pharmacology
;
In Situ Nick-End Labeling
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Hypoxia-Ischemia, Brain/*drug therapy/metabolism/pathology
;
Cycloheximide/*pharmacology
;
Brain Infarction/pathology/prevention & control
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Apoptosis/drug effects
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Annexin A5/metabolism
;
Animals, Newborn
;
Animals
8.A novel compound heterozygous mutation of the AIRE gene in a patient with autoimmune polyendocrine syndrome type 1
Junghwan SUH ; Han Saem CHOI ; Ahreum KWON ; Hyun Wook CHAE ; Jin Sung LEE ; Ho Seong KIM
Annals of Pediatric Endocrinology & Metabolism 2019;24(4):248-252
Autoimmune polyendocrine syndrome type 1 (APS-1), or autoimmune polyendocrinopathy-candidiasis-ectodermal dystrophy is a rare, autosomal recessive autoimmune disease caused by a mutation of the autoimmune regulator (AIRE) gene. The main symptom triad in APS-1 comprises chronic mucocutaneous candidiasis, adrenal insufficiency, and hypoparathyroidism. Various autoimmune diseases and ectodermal abnormalities are also commonly associated with the syndrome. The treatment of APS-1 includes hormone replacement and symptom control. It is important to monitor such patients for clinical manifestations of their disease through regular follow-up. We report the case of a 10-year-old Korean girl with APS-1 due to a novel compound heterozygous mutation of the AIRE gene. This patient's main clinical manifestations were adrenal insufficiency and chronic mucocutaneous candidiasis. The patient had a previously known pathogenic variant of c.1513delG (p.Ala505ProfsTer16), and a newly discovered variant of c.1360dupC (p.His454ProfsTer50).
Adrenal Insufficiency
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Autoimmune Diseases
;
Candidiasis, Chronic Mucocutaneous
;
Child
;
Ectoderm
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Female
;
Follow-Up Studies
;
Humans
;
Hypoparathyroidism
;
Polyendocrinopathies, Autoimmune
9.Identification of a novel point mutation in DAX-1 gene in a patient with adrenal hypoplasia congenita
Han Saem CHOI ; Ahreum KWON ; Hyun Wook CHAE ; Junghwan SUH ; Kyung Chul SONG ; Jin-Sung LEE ; Ho-Seong KIM
Annals of Pediatric Endocrinology & Metabolism 2021;26(2):126-129
X-linked adrenal hypoplasia congenita caused by a mutation in NR0B1/DAX-1 is a rare inherited disorder. Patients with adrenal hypoplasia congenita are usually diagnosed with primary adrenal insufficiency in infancy or early childhood and present hypogonadotropic hypogonadism during adolescence. Our patient first presented with adrenal crisis at the age of 2 months, which was managed with glucocorticoids and mineralocorticoids. At the age of 17 years, testicular volumes of 5 mL each and a stretched penile length of 4 cm were noted. A combined pituitary function test showed a peak luteinizing hormone level of 2.68 mIU/mL, testosterone 13.5 ng/dL, confirming hypogonadotropic hypogonadism. After whole-exome sequencing, a new variant of DAX-1, c.881T>C (p.Leu294Pro), was found. He was diagnosed with X-linked adrenal hypoplasia congenita and then treated with human choriogonadotropin for the induction of spermatogenesis as well as with steroid replacement therapy.
10.Identification of a novel point mutation in DAX-1 gene in a patient with adrenal hypoplasia congenita
Han Saem CHOI ; Ahreum KWON ; Hyun Wook CHAE ; Junghwan SUH ; Kyung Chul SONG ; Jin-Sung LEE ; Ho-Seong KIM
Annals of Pediatric Endocrinology & Metabolism 2021;26(2):126-129
X-linked adrenal hypoplasia congenita caused by a mutation in NR0B1/DAX-1 is a rare inherited disorder. Patients with adrenal hypoplasia congenita are usually diagnosed with primary adrenal insufficiency in infancy or early childhood and present hypogonadotropic hypogonadism during adolescence. Our patient first presented with adrenal crisis at the age of 2 months, which was managed with glucocorticoids and mineralocorticoids. At the age of 17 years, testicular volumes of 5 mL each and a stretched penile length of 4 cm were noted. A combined pituitary function test showed a peak luteinizing hormone level of 2.68 mIU/mL, testosterone 13.5 ng/dL, confirming hypogonadotropic hypogonadism. After whole-exome sequencing, a new variant of DAX-1, c.881T>C (p.Leu294Pro), was found. He was diagnosed with X-linked adrenal hypoplasia congenita and then treated with human choriogonadotropin for the induction of spermatogenesis as well as with steroid replacement therapy.