We review the effect of methylphenidate, focusing on Osmotic-controlled Release Oral delivery System (OROS) methylphenidate, on cardiovascular system, appetite and growth, sleep, tic, epilepsy, psychiatric and rare adverse events. Although OROS methylphenidate has side effects including increased heart rate or blood pressure, decreased appetite, delayed sleep onset, emergence or aggravation of tics, withdrawal or changes in mood, these effects appeared to be minimal in impact or difficult to distinguish from risk to untreated population and tended to be improved by dose adjustment or drug discontinuation. However, in subjects with underlying cardiac problems, uncontrolled epilepsy, previous psychotic episode, clinicians should pay attention and balance the risk and benefit.
Appetite ; Blood Pressure ; Cardiovascular System ; Epilepsy ; Heart Rate ; Methylphenidate ; Tics

We review the effect of methylphenidate, focusing on Osmotic-controlled Release Oral delivery System (OROS) methylphenidate, on cardiovascular system, appetite and growth, sleep, tic, epilepsy, psychiatric and rare adverse events. Although OROS methylphenidate has side effects including increased heart rate or blood pressure, decreased appetite, delayed sleep onset, emergence or aggravation of tics, withdrawal or changes in mood, these effects appeared to be minimal in impact or difficult to distinguish from risk to untreated population and tended to be improved by dose adjustment or drug discontinuation. However, in subjects with underlying cardiac problems, uncontrolled epilepsy, previous psychotic episode, clinicians should pay attention and balance the risk and benefit.
Appetite ; Blood Pressure ; Cardiovascular System ; Epilepsy ; Heart Rate ; Methylphenidate ; Tics

BACKGROUND AND OBJECTIVES: This study was done to evaluate the safety of Gore-Tex as a nasal implant. Materials and METHOD: A retrospective multicenter study was carried out on 15 surgeons from 11 general hospitals and 4 private practice clinics regarding the safety of the Gore-Tex as a nasal implant. The study involved 853 patients, of whom 656 received primary surgery and 197 revision surgery. Gore-Tex was mainly used as a dorsal implant in a form of sheet or as a reinforced nasal implant. RESULTS: The overall complication rate associated with Gore-Tex was 2.5% (21 cases). Infection was the most common complication (18 cases ; 2.1%) followed by 2 cases of seroma and 1 case of persistent nasal swelling. In 19 out of 21 complication cases, the graft needed removal to control the infection or seroma (91% removal rate). Nine cases of infection developed in both primary cases (1.37%) and in revision cases (4.57%), which suggests a higher association rate between infection and revision cases (p=0.0062). Infection developed within 1 month in 5 cases while 9 cases developed infection after 6 months of operation. Other complications such as aesthetic problems (malpositioning of the implant or dorsal irregularities) were found in 15 cases (1.8%) and hematoma in 1 case. CONCLUSION: The infection rate of Gore-Tex used in rhinoplasty was about 2% and it rose significantly in the revision cases. If infected, almost all of the implanted Gore-Tex needs removal; therefore, we suggest judicious use of Gore-Tex in rhinoplasty.
Hematoma ; Hospitals, General ; Humans ; Polytetrafluoroethylene* ; Private Practice ; Retrospective Studies ; Rhinoplasty* ; Seroma ; Transplants

OBJECTIVE: To discover the etiology of birth defects and low birth weight, it is necessary to establish epidemiological birth defects monitoring system in Korea. Our aim was to develop new practical model in Incheon to establish birth defects monitoring system to evaluate the incidence rate and patterns of birth defects in Korea. METHODS: Public health center and private hospitals and clinics participated in this monitoring system. Web based reporting system have been built. Trained nurses actively collected the records obtained from delivery units in the participating hospitals during 2 years (first year: December 1st, 1998-November. 31, 1999; second year: January 1 st, 2000-December 31 th, 2000). RESULTS: Through this monitoring system at 1 st year and 2 nd year, we observed 25 birth defect cases from 2482 births, 28 birth defect cases from 3490 births including live births and stillbirths. The incidence of birth defect per thousand person was 10.1, 8.0 respectively. At 1st year, the highest proportion of birth defects was 28.0% in musculoskeletal system. The proportion of birth defects in gastrointestinal system, cardiovascular system and cleft lip & cleft palate were 20.0%, 12.0%. 12.0%. At 2 nd year, the highest proportion of birth defects was 21.4% in gastrointestinal system The proportion of birth defects in cardiovascular system and musculoskeletal system were 17.9% and 14.3%. CONCLUION: In conclusion, we could build population-based monitoring system for birth defects successfully in Yonsu gu, Incheon. To establish population-based monitoring system for birth defects in Korea, it is necessary to organize the reporters of public health center and private hospitals and clinics, to build an available reporting system, and to extend participating centers for birth defects monitoring systems.
Cardiovascular System ; Cleft Lip ; Cleft Palate ; Congenital Abnormalities* ; Environmental Exposure ; Hospitals, Private ; Humans ; Incheon* ; Incidence ; Infant, Low Birth Weight ; Infant, Newborn ; Korea ; Live Birth ; Musculoskeletal System ; Parturition* ; Public Health ; Stillbirth

BACKGROUND AND OBJECTIVES: Aloe is one of the well known substances to decrease inflammation and promote wound healing. Although little is known about its mechanism, recent studies suggest that aloe vera extracts may have the anti-allergic effect by inhibiting the mediator release evoked by mast cell activation. Therefore, we were to investigate the effect of NY945, a glycoprotein fraction of Aloe vera, on nasal mucosa of the ovalbumin (OVA) sensitized guinea pigs. Materials and Methods: Female Dunkin-Hartley guinea pigs were sensitized with intraperitoneal injection and subsequent inhalation of OVA. NY945 was injected intraperitonealy before intranasal challenge of OVA with an ultrasonic nebulizer. Airway resistance, mucosal permeability, histamine concentration in the nasal lavage fluid, the number of mast cells and eosinophils in nasal mucosa and serum level of OVA -specific IgE were evaluated. RESULTS: NY945 effectively inhibited respiratory airway resistance in the sensitized guinea pigs. The concentration of dye into nasal lavage fluid was rapidly increased after OVA instillation and NY945 inhibited the OVA -induced microvascular dye leakage. OVA inhalation to sensitized guinea pig resulted in prominent increase of histamine concentration in the nasal lavage fluid. This response was inhibited by intraperitoneal NY945 injection. It also inhibited accumulation of eosinophils in the nasal mucosa in sensitized guinea pigs. However, there was no change in the serum OVA -specific IgE level between the NY945 treated and control group. CONCLUSION: The data suggest that NY945 inhibits early allergic reaction via inhibition of histamine release and eosinophil infiltration.
Airway Resistance ; Aloe* ; Animals ; Eosinophils ; Female ; Glycoproteins* ; Guinea Pigs* ; Guinea* ; Histamine ; Histamine Release ; Humans ; Hypersensitivity* ; Immunoglobulin E ; Inflammation ; Inhalation ; Injections, Intraperitoneal ; Mast Cells ; Nasal Lavage Fluid ; Nasal Mucosa ; Nebulizers and Vaporizers ; Ovalbumin ; Ovum ; Permeability ; Ultrasonics ; Wound Healing

BACKGROUND AND OBJECTIVES: The classic immunotherapy has the inconvenience and the risk of anaphylaxis. Recent reports revealed that immunostimulatory DNA sequences (CpG motif, ISS-ODN) have been shown to act as strong Th1 response-inducing adjuvants and DNA based vaccination might be an effective therapeutic option for the treatment of allergic disease. In our study, we investigated whether ISS-ODN have anti-allergic effect in the mouse rhinitis model of Dermatophagoides farinae (Der f), the most common allergen in Korea. MATERIALS AND METHOD: C57BL/6 mice were sensitized with crude extract of Der f extract. After injection of ISS-ODN, several parameters of allergic response were evaluated. RESULTS: Injection with ISS-ODN suppressed itching symptom, eosinophilic infiltration into nasal mucosa and the splenic T cell proliferation after Der f allergen challenge in the murine model of allergic rhinitis. However, injection with ISS-ODN did not show a detectable Der f-specific IgE suppression. CONCLUSION: Our findings suggested ISS-ODN have an anti-allergic effect in the allergic rhinitis model of Der f allergen. House dust mite allergy can be reduced by the injection with ISS-ODN.
Anaphylaxis ; Animals ; Base Sequence ; Cell Proliferation ; Dermatophagoides farinae ; DNA ; Eosinophils ; Hypersensitivity ; Immunoglobulin E ; Immunotherapy ; Korea ; Mice ; Nasal Mucosa ; Pruritus ; Pyroglyphidae ; Rhinitis* ; Vaccination

Basaloid squamous cell carcinoma is a rare variant of squamous cell carcinoma mainly occurring in the tongue base, hypopharynx, larynx and the mouth floor. Histologically, this tumor has two cell types, the basaloid cell and the squamous cell. Prognosis of this tumor was reported to be worse than that of squamous cell carcinoma due to its aggressive behavior. We experienced a case of basaloid squamous cell carcinoma in the mobile tongue, which had no mucosal involvement.
Carcinoma, Squamous Cell* ; Hypopharynx ; Larynx ; Mouth Floor ; Prognosis ; Tongue*

BACKGROUND AND OBJECTIVES: Several strategies were used to control the IgE production by interfering the functional activities of IL-4. However, most of them revealed limited effects to reduction of allergic response. This study was aimed to investigate the effects of interleukin-4 receptor (IL-4R) antibody on allergic response in animal model of allergic rhinitis. MATERIALS AND METHODS: Male BALB/C mice were sensitized with intraperitoneal injection of ovalbumin (OVA). IL-4R antibody was injected intravenously before intranasal challenge of OVA with ultrasonic nebulizer. Allergic symptoms, a number of eosinophils in nasal mucosa and serum level of OVA-specific IgE were evaluated. RESULTS: In IL-4R antibody treated mice, allergic symptom score were decreased (53.5%) than in control mice. The number of eosinophils in nasal mucosa were also reduced (47.4%). However, serum level of OVA-specific IgE were not obviously reduced (14.3%). CONCLUSION: These results suggested that IL-4R antibody has a potential effect for the treatment of allergic rhinitis in vivo.
Animals ; Eosinophils ; Humans ; Immunoglobulin E ; Injections, Intraperitoneal ; Interleukin-4* ; Male ; Mice ; Models, Animal ; Nasal Mucosa ; Nebulizers and Vaporizers ; Ovalbumin ; Ovum ; Rhinitis ; Ultrasonics

BACKGROUND AND OBJECTIVES: The animal model of allergic rhinitis is important to study the pathophysiology of allergy and to design an effective therapy to ameliorate allergic diseases. Despite of numerous reported animal models of allergic rhinitis, there were few reports of murine model sensitized with house dust mite, which is one of the most common antigen that induce allergic rhinitis. The aim of this study was the establishment of the murine model for house dust mite allergy. MATERIALS AND METHODS: C57BL/6 mice were sensitized with Dermatophagoides farinae (Der f) crude extract in complete Freund's adjuvant and repetitive intranasal instillation of Der f extract a total of 6 times at 1 week intervals (group A). In some mice, allergen was intranasally instilled at 1 week intervals without sensitization of allergen (group B). RESULTS: After allergen challenge, nasal symptoms were significantly increased in group A mice. Histopathologically, the number of eosinophil in nasal mucosa were also significantly increased in group A and B mice. High level of Der f-specific IgE antibody was observed in group A mice, whereas those of group B mice was low. CONCLUSION: Our findings suggested that house dust mite allergy can be developed by systemic sensitization of Der f extract with adjuvant and intranasal instillation of allergen. This is more effective method than local sensitization of allergen only.
Animals ; Dermatophagoides farinae ; Dust* ; Eosinophils ; Freund's Adjuvant ; Hypersensitivity ; Immunoglobulin E ; Mice* ; Models, Animal ; Nasal Mucosa ; Pyroglyphidae* ; Rhinitis*

The lingual thyroid is the most common manilestation of benign ectopic thyroid tissue, but is still a rare clinical entity. As a result, attempts at management may prove to be rather confusing. It may present with symptoms of dysphagia, upper airway obstruction or even hemorrhage at any time from infancy through adulthood. Therefore, clinical findings, laboratory tests, and radiographic imaging studies should be employed in confirming the diagnosis and appropriate planning treatment, keeing in mind that the primary therapeutic goal is to restore the thyroid function. We report two cases of lingual thyroid gland with the review otliterature.
Airway Obstruction ; Deglutition Disorders ; Diagnosis ; Hemorrhage ; Lingual Thyroid* ; Thyroid Dysgenesis ; Thyroid Gland ; Tongue Diseases