• Anxiety and mood
• /
• v.7 no.1
• /
• pp.34-39
• /
• 2011

Objectives : An early age at onset of obsessive compulsive symptoms in family studies has been strongly associated with a more familial form of obsessive compulsive disorder (OCD). Further, many reports have suggested that early- and late- onset OCD represent separate subtypes of the disorder. The aim of this study was to investigate the associations between the glutamate receptor, the ionotropic, n-methyl-d-aspartate (NMDA) subunit 2B gene (GRIN2B) polymorphisms, and onset of OCD in the Korean population. Methods : We recruited 109 OCD patients and classified them into early- (age of onset <18 years) and late-onset groups (age of onset${\geq}$18). Genomic DNA was extracted from their blood after which the genotypes and allelic frequencies of the two GRIN2B polymorphisms (5072T/G and 5988T/C) were compared in the two groups. We also compared genetic data between child- (age of onset${\leq}$15) and adult-onset groups (age of onset${\geq}$19) using the same protocol. Results : There were no significant differences between the early- and late-onset groups with respect to genotype. Moreover, we could not find any differences in genotype frequencies between child and adult-onset groups. Conclusions : Our study suggested that GRIN2B polymorphisms (5072T/G and 5988T/C) do not affect the onset of OCD in Koreans. However, this finding has resulted from a preliminary study and thus, further study is required.

• Asian Pacific Journal of Cancer Prevention
• /
• v.17 no.5
• /
• pp.2587-2592
• /
• 2016

Background: Early onset sporadic colorectal cancer (CRC) is a biologically and clinically distinct entity hypothesized to exhibit differences in histological features and microsatellite instability (MSI) as compared to typical onset CRC. This study compared the MSI status, mismatch repair enzyme deficiency and clinicopathological features of early onset (aged ${\leq}45$ years) with controls (>45 years). Materials and Methods: A total of 30 cases and 30 controls were analyzed for MSI status using the Bethesda marker panel. Using antibodies against hMLH1, hMSH2 and hMSH6, mismatch repair protein expression was assessed by immunohistochemistry. Molecular characteristics were correlated with clinicopathological features. Results: The early onset sporadic CRCs were significantly more poorly differentiated tumors, with higher N2 nodal involvement and greater frequency of signet ring phenotype than the typical onset cases. MSI was observed in 18/30 cases, with 12/18 designated as MSI-high (MSI-H) and 6/18 designated as MSI-low (MSI-L). In the control group, 14 patients exhibited MSI, with 7 MSI-H and 7 MSI-L. MSI tumors in both cases and controls exhibited loss of hMLH1, hMSH2 and hMSH6. MSS tumors did not exhibit loss of expression of MMR proteins, except hMLH1 protein in 3 controls. No statistically significant difference was noted in MSI status or expression of MMR proteins in cases versus controls. Conclusions: Microsatellite status is comparable between early and typical onset sporadic CRC patients in Pakistan suggesting that differences in clinicopathological features between these two subsets are attributable to other molecular mechanisms.

• Korean Journal of Biological Psychiatry
• /
• v.4 no.1
• /
• pp.74-83
• /
• 1997

With increasing tendency of incidence and interest for the late onset schzophrenia, concerns about whether this disorder is etiologically or phenomenogically distinctive entity or not have increased also. To clarify the disease entity of the late onset schzophrenia and the role of structural brain changes in its etiology, authors tried to prove following hypothesis : Are there any evidences of structural brain changes in the lateonset schizophrenia? ; If present, are they not different from those of the early-onset schizophrenia or progressive schizophrenia? ; And are they not different from those of senile dementia? Subjects were 6 patients with the late-onset schizophrenia, 6 patients with the early-onset schizophrenia, 6 patients with progressive schizophrenia, 6 patients with Alzheimer's dementia, and 6 controls. We measured regions of interest of the magnetic resonance images by computer assisted planimetry using the AutoCad and digitizer. Our study results may suggest that the third ventricular enlargement and a reversal of normal difference between left and right temporal lobe and left-right difference in posterior lateral ventricle are common brain pathology for all types of schizophrenia including the late onset schzophrenia. And also suggest that brain structural changes of the late onset schizophrenia are related with neurodevelopmental abnormality rather than degenerative change.

• Journal of Interdisciplinary Genomics
• /
• v.3 no.1
• /
• pp.13-20
• /
• 2021

Developmental and epileptic encephalopathies are the most devastating early-onset epilepsies, characterized by early-onset seizures that are often intractable, electroencephalographic abnormalities, developmental delay or regression, and various comorbidities. A large number of underlying genetic variants of developmental and epileptic encephalopathies have been identified over the past few decades. However, the most thorough sequencing studies leave 60-65% of patients without a molecular diagnosis. This review explores the genetic basis of developmental and epileptic encephalopathies that start within the first year of life, including Ohtahara syndrome, early myoclonic encephalopathy, epilepsy of infancy with migrating focal seizures, infantile spasms, and Dravet syndrome. The purpose of this review is to give an overview and encourage the clinicians to start considering genetic testing as an important investigation along with electroencephalogram for better understanding and management of developmental and epileptic encephalopathies.

• Korean Journal of Biological Psychiatry
• /
• v.16 no.1
• /
• pp.37-45
• /
• 2009

Objectives : It is reported that panic disorder is frequently comorbid with other psychiatric illnesses. The aim of this study was to investigate differences of psychiatric comorbidity according to age of onset of panic disorder. Methods : Three hundred-two patients participated in the study. All the patients were evaluated by clinical instruments for the assessment the presence of other comorbid psychiatric disorders and various clinical features; Korean version of Mini International Neuropsychiatric Interview, Self-report questionnaires(Beck Anxiety Inventory, Beck Depression Inventory, Anxiety Sensitivity Index and State-Trait Anxiety Inventory) and clinical rating scale (Hamilton Anxiety Scale, Hamilton Depression Scale and Global Assessment of Functional score). Chi-square test was used to determine the difference between early onset and late onset panic disorder. Results : Forty percent of panic patients were found to have at least one comorbid psychiatric diagnosis. There were no differences among the groups divided by number of comorbidity in sex, agoraphobia comorbidity, duration of panic disorder, except onset age of panic disorder. Early onset group had more comorbidy with social phobia, agoraphobia, PTSD. We also found that Early onset panic disorder patients were more likely to experience derealization, nausea, parethesia than late onset panic disorder patients. Conclusion : The results of our study are in keeping with previous data from other parts of the world. Our finding suggest that earier onset of panic disorder related to more psychiatric comorbidity.

• The Journal of Pediatrics of Korean Medicine
• /
• v.27 no.1
• /
• pp.1-6
• /
• 2013

Objectives This clinical study was aimed to examine the effects of herbal medicine and acupuncture on early onset - essential tremor and report on the therapeutic progress. Methods Herbal medication (Kamiyangsintang) and acupuncture were used for treatment. Also, VAS scale were used to check the improvement. Results The hands tremor was relieved during 4 months of treatment. However, the symptom was aggravated after one and a half years. The patient has shown improvement after retreatment. Conclusions This study showed that child patient diagnosed with essential tremor who received Kamiyangsintang and acupuncture treatments was improved. However, it also can be aggravated depending on the patients and their body condition. More cases and long-term observation in relation to early onset of tremor are required.

• The Korean Journal of Applied Statistics
• /
• v.24 no.4
• /
• pp.709-719
• /
• 2011

We investigate the latent stage-sequential patterns of drinking behaviors of U.S. adolescents who have started to drink by age 14 years (seven years before the legal drinking age). A multiple-group latent transition analysis(LTA) with logistic regression is employed to identify the subsequent patterns of drinking behaviors among early-onset drinkers. A sample of 1407 early-onset adolescents from the National Longitudinal Survey of Youth(NLSY97) is analyzed using maximum-likelihood estimation. The analysis demonstrates that early-onset adolescents' drinking behaviors can be represented by four latent classes and their prevalence and transition are influenced by demographic factors of gender, age, and race.

• Anxiety and mood
• /
• v.10 no.2
• /
• pp.108-114
• /
• 2014

Objective : The correlation between age of onset and symptoms/severity of panic disorder has not yet been determined. The aim of this research is to determine the different clinical features of panic disorder according to the age of onset. Methods : Patients diagnosed with panic disorder were placed into two groups according to onset of age. The subjects were checked for 13 different panic symptoms presented in the DSM-IV. The investigation was also executed by severity, the anxiety sensitivity index, the scale for depression and anxiety. Results : The early onset group had significantly higher frequencies than the late onset group in the areas of "choking feeling" and "derealization or paresthesia". It was found that only "choking feeling" was statically significant as a risk factor of early onset panic disorder. Among the objective anxiety scale, the subscale of psychological anxiety was higher in the early onset group compared to the late onset group. Conclusion : "Choking feeling" was the only panic symptom that showed a significant difference in accordance with onset age. Earlier onset patients tend to experience a more frequent "choking feeling," which is related to respiratory symptoms. This could mean that earlier onset patients are more likely to have higher psychological anxiety.

• Pediatric Infection and Vaccine
• /
• v.7 no.2
• /
• pp.245-249
• /
• 2000

Listeria monocytogenes is one of the important causes of neonatal sepsis and listerial neonatal infection manifests in two forms : Early-onset sepsis syndrome, associated with spontaneous abortion, still birth, preterm labor, granulomatosis infantiseptica, respiratory distress, sepsis, hemodynamic compromise and late-onset listerosis mainly associated with meningitis. Cases of neonatal listerosis reported in Korea have been rare and all were full term newborns. We, herein, report a case of early-onset sepsis due to L. monocytogenes in a extremely low birth weight infant who were born in a critical condition and succumbed in the second day of life despite the intensive care.

• Journal of Genetic Medicine
• /
• v.18 no.2
• /
• pp.94-100
• /
• 2021

Early onset scoliosis (EOS) describes the onset of scoliosis before the age of 10 years and is associated with significant health risks. Compared to adolescent idiopathic scoliosis, studies on the etiology of EOS in children are more common. EOS includes inhomogeneous groups of patients, and the etiology of EOS may be congenital, neuromuscular, syndromic, or idiopathic. The identification of the molecular etiology underlying patients with EOS has been increasing. This could provide valuable information for optimizing the management and care of these children. In this review, EOS was reviewed from a medical genomic perspective.