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ABSTRACT: A suspension protein microarray was developed using shape-coded poly(ethylene glycol) (PEG) hydrogel microparticles for potential applications in multiplex and high-throughput immunoassays. A simple photopatterning process produced various shapes of hydrogel micropatterns that were weakly bound to poly(dimethylsiloxane) (PDMS)-coated substrates. These micropatterns were easily detached from substrates during the washing process and were collected as non-spherical microparticles. Acrylic acids were incorporated into hydrogels, which could covalently immobilize proteins onto their surfaces due to the presence of carboxyl groups. The amount of immobilized protein increased with the amount of acrylic acid due to more available carboxyl groups. Saturation was reached at 25% v/v of acrylic acid. Immunoassays with IgG and IgM immobilized onto hydrogel microparticles were successfully performed with a linear concentration range from 0 to 500 ng/mL of anti-IgG and anti-IgM, respectively. Finally, a mixture of two different shapes of hydrogel microparticles immobilizing IgG (circle) and IgM (square) was prepared and it was demonstrated that simultaneous detection of two different target proteins was possible without cross-talk using same fluorescence indicator because each immunoassay was easily identified by the shapes of hydrogel microparticles.
Sensors 01/2012; 12(6):8426-36. · 1.74 Impact Factor
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ABSTRACT: A fixed drug eruption (FDE) is characterized by the presence of a solitary or multiple, pruritic, well-circumscribed, erythematous plaques. These lesions have tendency to recur at same sites and heal with residual hyperpigmenation. With repeated attacks, the size and/or number of the lesions may increase. So far, more than 100 drugs have been implicated in causing FDEs, including ibuprofen, sulfonamide, naproxen, and tetracylines. FDE caused by allopurinol has been rarely reported in the literature, but there has been no confirmed case based on oral provocation test. Herein, we report a case of FDE in which the lesions recurred whenever allopurinol was administered for the treatment of gout. A 64-year-old male experienced repeated episodes of well-demarcated dusky erythematous patches on the whole body for 2 months. He took allopurinol intermittently for amelioration of his gout symptom, but denied other medication history. Pruritic erythematous edema developed on the previous lesions 12 hours after oral provocation of 200 mg of allopurinol.
Annals of Dermatology 12/2011; 23(Suppl 3):S402-3. · 0.53 Impact Factor
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Sang Min Kim,
Hyeon-Cheol Gwon, Hyun Jong Lee,
Joon Hyouk Choi,
Soo Hee Choi,
Ji Hyun Yang,
Sang Yeub Lee,
Young Bin Song,
Joo-Yong Hahn,
Jin Ho Choi,
Seung-Hyuk Choi,
Sang Hoon Lee
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ABSTRACT: A retrograde approach through the collateral channels was recently proposed as one of the most promising current techniques for percutaneous coronary intervention of chronic total occlusion in coronary arteries (CTO). This report describes the case of a 68-year-old man in whom CTO was successfully crossed with a wire by the retrograde approach using septal collateral, but the patient suffered from a complication with septal myocardial infarction demonstrated by cardiac magnetic resonance imaging.
Korean Circulation Journal 12/2011; 41(12):747-9.
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ABSTRACT: This paper describes the development of multi-functional nanofiber scaffolds consisting of multiple layers of nanofiber scaffolds and nanofiber-incorporated poly(ethylene glycol) (PEG) hydrogels. As a proof-of-concept demonstration, we fabricated micropatterned polymeric nanofiber scaffolds that were capable of simultaneously generating cellular micropatterns within a biomimetic environment and detecting cellular metabolic products within well-defined microdomains. To achieve this goal, we designed nanofiber scaffolds with both vertical and lateral microdomains. Vertically heterogeneous structures that were responsible for multi-functionality were realized by preparing double-layered nanofiber scaffolds consisting of an antibody-immobilized bottom layer of nanofibers and an upper layer of bare polystyrene (PS) nanofibers by a two-step sequential electrospinning process. Photopatterning of poly(ethylene glycol) (PEG) hydrogel on the electrospun nanofibers produced laterally heterogeneous micropatterned nanofiber scaffolds made of hydrogel microwells filled with a nanofibrous region, which is capable of generating cell and protein micropatterns due to the different interactions that cells and proteins have with PEG hydrogels and nanofibers. When HepG2 cells were seeded into resultant nanofiber scaffolds, cells selectively adhered within the 200 μm × 200 μm PS fiber microdomain and formed 180.2 ± 6.7 μm spheroids after 5 days of culture in the upper layer. Furthermore, immobilized anti-albumin in the bottom layer detected albumin secreted by micropatterned HepG2 cells with higher sensitivity than flat PS substrates, demonstrating successful accomplishment of dual functions using micropatterned double-layered nanofiber scaffolds.
Lab on a Chip 09/2011; 11(17):2849-57. · 5.67 Impact Factor
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ABSTRACT: A non-positional (or suspension) cell microarray was developed using shape-coded SU-8 photoresist microboards for potential application in multiplex and high-throughput cell-based assays. A conventional photolithography process on glass slides produced various shapes of SU-8 micropatterns that had a lateral dimension of 200 μm and a thickness of 40 μm. The resultant micropatterns were detached from the slides by sonication and named "microboards" due to the fact that had a much larger lateral dimension than thickness. The surfaces of the SU-8 microboards were modified with collagen to promote cell adhesion, and it was confirmed that collagen-coated SU-8 microboards supported cell adhesion and proliferation. Seeding of cells into poly(ethylene glycol)(PEG) hydrogel-coated well plates containing collagen-modified microboards resulted in selective cell adhesion onto the microboards due to the non-adhesiveness of PEG hydrogel toward cells, thereby creating non-positional arrays of microboards carrying cells. Finally, two different cell types (fibroblasts and HeLa cells) were separately cultured on different shapes of microboards and subsequently mixed together to create a non-positional cell microarray consisting of multiple cell types where each cell could be easily identified by the shape of the microboard to which they had adhered. Because numerous unique shapes of microboards can be fabricated using this method by simply changing the photomask designs, high throughput and multiplex cell-based assays would be easily achieved with this system in the future.
Biomicrofluidics 09/2011; 5(3):32001-3200110. · 3.37 Impact Factor
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ABSTRACT: We sought to compare long-term outcomes for multivessel revascularization (MVR) vs single-vessel revascularization (SVR) with drug-eluting stents (DES) in patients with non-ST-segment elevation acute coronary syndrome (NSTE-ACS) and multivessel coronary artery disease (MVD).
In DES era, MVR would improve long-term clinical outcomes in patients with NSTE-ACS.
We studied 179 patients undergoing MVR and 187 patients undergoing SVR for NSTE-ACS and MVD. Major adverse cardiac events (MACE) were defined as death, myocardial infarction, or any revascularization.
During follow-up (median 36 months), MACE occurred in 96 patients (26.2%); 35 (19.6%) in the MVR group and 61 (32.6%) in the SVR group (P=0.003). In multivariate analysis, MVR was associated with a lower incidence of MACE (hazard ratio [HR]: 0.50, 95% confidence interval [CI]: 0.30-0.85) and revascularization (HR: 0.43, 95% CI: 0.24-0.78), but not of death (HR: 0.69, 95% CI: 0.25-1.93) and myocardial infarction (HR: 0.39, 95% CI: 0.11-1.47). The incidence of periprocedural renal dysfunction was not significantly different between patients undergoing MVR vs SVR (3.4% vs 1.6%, P=0.33). Definite or probable stent thrombosis occurred at a similar rate (2.2% in the MVR group and 2.7% in the SVR group, P=0.99).
In patients with NSTE-ACS and MVD, MVR using drug-eluting stents may reduce MACE. Our findings should be confirmed by a prospective, randomized trial.
Clinical Cardiology 03/2011; 34(3):160-5. · 2.15 Impact Factor
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ABSTRACT: Although there were studies about ethnic differences in aortic valve thickness and calcification that they may play a role in aortic valvular stenosis (AVS) progression, few studies about the progression rate of AVS in Asian population have been reported. The purpose of this study was to evaluate the progression rate of AVS in Korean patients.
We retrospectively analyzed 325 patients (181 men, age: 67 ± 13 years) with AVS who had 2 or more echocardiograms at least 6 months apart from 2003 to 2008. The patients with other significant valvular diseases or history of cardiac surgery were excluded. The progression rate of AVS was expressed in terms of increase in maximum aortic jet velocity per year (meter/second/year).
Baseline AVS was mild in 207 (64%), moderate in 81 (25%), and severe in 37 (11%). There were no significant differences among the three groups in terms of age, gender, hypertension, smoking, and hypercholesterolemia. The mean progression rate was 0.12 ± 0.23 m/s/yr and more rapid in severe AVS (0.28 ± 0.36 m/s/yr) when compared to moderate (0.14 ± 0.26 m/s/yr) and mild AVS (0.09 ± 0.18 m/s/yr) (p < 0.001). The progression rate in bicuspid AVS was significantly higher than other AVS (0.23 ± 0.35 vs. 0.11 ± 0.20 m/s/yr, p = 0.002). By multivariate analysis, initial maximum aortic jet velocity (Beta = 0.175, p = 0.003), bicuspid aortic valve (Beta = 0.127, p = 0.029), and E velocity (Beta = -0.134, p = 0.018) were significantly associated with AVS progression.
The progression rate of AVS in Korean patients is slower than that reported in Western population. Therefore, ethnic difference should be considered for the follow-up of the patients with AVS.
Journal of cardiovascular ultrasound 12/2010; 18(4):127-33.
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ABSTRACT: In this paper, we describe a simple method for fabricating micropatterned nanoporous substrates that are capable of controlling the spatial positioning of mammalian cells. Micropatterned substrates were prepared by fabricating poly(ethylene glycol) (PEG) hydrogel microstructures on alumina membranes with 200 nm nanopores using photolithography. Because hydrogel precursor solution could infiltrate and become crosslinked within the nanopores, the resultant hydrogel micropatterns were firmly anchored on the substrate without the use of adhesion-promoting monolayers, thereby allow tailoring of the surface properties of unpatterned nanoporous areas. For mammalian cell patterning, arrays of microwells of different dimensions were fabricated. These microwells were composed of hydrophilic PEG hydrogel walls surrounding nanoporous bottoms that were modified with cell-adhesive Arg-Gly-Asp (RGD) peptides. Because the PEG hydrogel was non-adhesive towards proteins and cells, cells adhered selectively and remained viable within the RGD-modified nanoporous regions, thereby creating cellular micropatterns. Although the morphology of cell clusters and the number of cells inside one microwell were dependent on the lateral dimension of the microwells, adhered cells that were in direct contact with nanopores were able to penetrate into the nanopores by small extensions (filopodia) for all the different sizes of microwells evaluated.
Acta biomaterialia 11/2010; 7(3):1281-9. · 3.98 Impact Factor
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ABSTRACT: The reliability and usefulness of the right ventricular (RV) Tei index (RTX) remains controversial because it has not been possible to simultaneously measure RV inflow and outflow. However, dual pulsed-wave Doppler (DPD) enables flow velocities to be obtained at different sampling sites simultaneously. In this study we evaluated the feasibility and reliability of RTX values obtained by DPD (RTX(DPD)).
Forty-one patients who underwent cardiac catheterization and echocardiography for RV volume or pressure overloading conditions were evaluated. Symptom-limited exercise treadmill testing with expired gas analysis was performed and maximal exercise capacity was measured.
RTX by conventional flow Doppler (RTX(CFD), 0.262±0.164) was similar to RTX(DPD) (0.253±0.117, p=NS), whereas RTX by tissue Doppler echocardiography (RTX(TDE), 0.447±0.125) was significantly larger than RTX(DPD) (p<0.001). Based on multiple regression analysis, maximal exercise capacity was independently related to RTX(DPD) (β=-0.60, p<0.001), mid-RV dimension (β=-0.26, p=0.012), left ventricular ejection fraction (β=0.22, p=0.023), and early diastolic tricuspid annular velocity (β=0.21, p=0.048).
It is feasible and reliable to evaluate RV function using RTX(DPD) values. However, to evaluate the clinical usefulness of RTX(DPD), additional studies are required with a large number of patients and long-term follow-up.
Korean Circulation Journal 08/2010; 40(8):391-8.
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ABSTRACT: To determine the predictors affecting treatment outcome after application of the mandibular advancement device (MAD).
Retrospective analysis.
Tertiary care university hospital.
A total of 76 patients (68 men and 8 women) who were treated with the MAD for obstructive sleep apnea (OSA) were included from September 2005 through August 2008. All the subjects underwent cephalometry, nocturnal polysomnography, and sleep videofluoroscopy (SVF) before and at least 3 months after receipt of a custom-made MAD. Sleep videofluoroscopy was performed before and after sleep induction and was analyzed during 3 states of awakeness, normoxygenation sleep, and desaturation sleep. Subjects were divided into success and nonsuccess groups depending on treatment outcome.
Multiple variables from cephalometry and SVF including the length of the soft palate, retropalatal space, retrolingual space, and mouth opening angle were evaluated during sleep events with or without the MAD between success and nonsuccess group.
The soft palate was significantly longer in the nonsuccess group than in the success group. The retropalatal and retrolingual airway spaces and mouth opening angle were not different between 2 groups. Application of the MAD increased the retrolingual space and decreased the length of the soft palate and the mouth opening angle significantly in both success and nonsuccess groups. However, retropalatal space was widened only in the success group, which showed that retropalatal space may be important in determining treatment response of the MAD.
The length of the soft palate showed a difference between success and nonsuccess groups, and widening of retropalatal space might be an important factor for successful outcome with MAD application.
Archives of otolaryngology--head & neck surgery 07/2010; 136(7):677-81. · 1.92 Impact Factor
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Acta Dermato-Venereologica 03/2010; 90(2):223-4.
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Hye Jin Noh,
Hyun Chul Jo,
Ji Hyun Yang,
Sang Min Kim, Hyun Jong Lee,
Joon Hyuk Choi,
Soo Hee Choi,
Bong Geun Song,
Yeon Hyeon Choe,
Seung Hyuk Choi,
Duk Kyung Kim,
Dae Kyung Cho
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ABSTRACT: Flash pulmonary edema typically exhibits sudden onset and resolves rapidly. It generally is associated with bilateral renal artery stenosis or unilateral stenosis in conjunction with a single functional kidney. We describe a patient who presented with flash pulmonary edema treated by percutaneous therapy with stent implantation. Our case is unique in that the flash pulmonary edema occurred in the setting of unilateral renal artery stenosis with bilateral functioning kidneys.
Korean Circulation Journal 01/2010; 40(1):42-5.
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ABSTRACT: To evaluate the relationship between findings via osteomeatal unit computed tomography (OMU CT) of the olfactory cleft and olfactory function in patients with chronic rhinosinusitis (CRS).
Retrospective review of medical records.
Referral center.
Two hundred ten patients with CRS who underwent OMU CT and olfactory function tests were included in this study.
All the paranasal sinuses were graded via the Lund-Mackay scoring system. The olfactory cleft was graded on a scale of 0 to 4 according to its opacification. Olfactory function was evaluated by the butanol threshold test (BTT) and the 16-odor identification test (OIT).
The radiologic grade of the olfactory cleft was more significantly correlated with olfactory function than the grades of the paranasal sinuses. In patients without allergy, the BTT and OIT scores were inversely correlated with the CT score of the olfactory cleft. However, in patients with allergy, only the BTT score had a negative correlation with the CT score of the olfactory cleft, whereas the OIT score did not. The OIT score showed a significant negative correlation with the opacification of the olfactory cleft in the mild and moderate CRS group only, whereas the BTT score showed a significant negative correlation in all stages of CRS.
The opacification of the olfactory cleft had a negative correlation with the olfactory function scores in patients with CRS. The olfactory cleft findings on OMU CT may give some clues to the olfactory function in patients with CRS.
Archives of otolaryngology--head & neck surgery 10/2009; 135(10):988-92. · 1.92 Impact Factor
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ABSTRACT: To analyze the efficacy of treating postviral olfactory loss with glucocorticoids, Ginkgo biloba, and mometasone furoate nasal spray.
Randomized trial.
Academic research.
Seventy-one patients who were diagnosed as having postviral olfactory loss.
All patients underwent olfactory function tests, including the butanol threshold test (BTT) and the cross-cultural smell identification test (CCSIT), and follow-up tests were performed 4 weeks later. In the interim, 28 patients were treated with prednisolone for 2 weeks (monotherapy), and the other 43 patients were treated with prednisolone for 2 weeks plus G biloba for 4 weeks (combination therapy). All patients used mometasone nasal spray twice daily for 4 weeks.
Scores on the BTT and CCSIT significantly increased after treatment in both groups (P < .001 for both). The mean (SD) BTT score changes were 1.4 (2.2) in the monotherapy group and 2.2 (2.9) in the combination therapy group (P = .22). The mean (SD) CCSIT score changes were 0.9 (1.7) in the monotherapy group and 1.9 (2.7) in the combination therapy group (P = .11). On the BTT, the treatment response (defined as a score increase of > or =3) rates were 32% (9 of 28) in the monotherapy group and 37% (16 of 43) in the combination therapy group (P = .66), and the odds ratio was 1.25 (95% confidence interval, 0.46-3.42). On the CCSIT, the treatment response rates were 14% (4 of 28) in the monotherapy group and 33% (14 of 43) in the combination therapy group (P = .08), and the odds ratio was 2.89 (95% confidence interval, 0.84-9.97).
Olfactory function in patients with postviral olfactory loss was significantly improved by both treatment modalities. Although the treatment response was not statistically different between the monotherapy group and the combination therapy group, the addition of G biloba showed a tendency of greater efficacy in the treatment of postviral olfactory loss.
Archives of otolaryngology--head & neck surgery 10/2009; 135(10):1000-4. · 1.92 Impact Factor
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ABSTRACT: To quantitatively evaluate the effects of the mandibular advancement device (MAD) on changes in the upper respiratory tract during sleep using sleep videofluoroscopy (SVF) in patients with obstructive sleep apnea (OSA).
Retrospective analysis.
Academic tertiary referral center.
Seventy-six patients (68 men and 8 women) who were treated with the MAD for OSA were included from September 1, 2005, through August 31, 2008.
All patients underwent nocturnal polysomnography and SVF before and at least 3 months after receipt of the custom-made MAD. Sleep videofluoroscopy was performed before and after sleep induction and was analyzed during 3 states of awakeness, normoxygenation sleep, and desaturation sleep.
Changes in the length of the soft palate, retropalatal space, retrolingual space, and angle of mouth opening were evaluated during sleep events with or without the MAD.
Without the MAD, the length of the soft palate and the angle of mouth opening increased during sleep events, especially in desaturation sleep, compared with the awake state. The retropalatal space and retrolingual space became much narrower during sleep compared with the awake state. The MAD had marked effects on the length of the soft palate, retropalatal space, retrolingual space, and angle of mouth opening. The retropalatal space and retrolingual space were widened, and the length of the soft palate was decreased. The MAD kept the mouth closed.
Sleep videofluoroscopy showed dynamic upper airway changes in patients with OSA, and the MAD exerted multiple effects on the size and configuration of the airway. Sleep videofluoroscopy demonstrated the mechanism of action of the MAD in patients with OSA. The MAD increased the retropalatal and retrolingual spaces and decreased the length of the soft palate and the angle of mouth opening, resulting in improvement of OSA.
Archives of otolaryngology--head & neck surgery 09/2009; 135(9):910-4. · 1.92 Impact Factor
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ABSTRACT: To evaluate retrospectively the efficacy of the mandibular advancement device (MAD) in Korean patients with obstructive sleep apnea (OSA) in terms of severity and to evaluate prognostic factors deciding the success of MAD application.
Retrospective analysis.
Academic tertiary referral center.
Of 142 patients who underwent MAD application for OSA management, 50 (46 men and 4 women; mean [SD] age, 50.2 [9.8] years) were included from March 2005 through August 2007.
Full-overnight polysomnography was performed before and at least 3 months after intraoral MAD application in 50 patients. Questionnaires for sleep quality, Epworth sleepiness scale, and cephalometry were also studied.
Treatment results were evaluated and prognostic factors deciding success of MAD application were assessed.
The mean (SD) apnea-hypopnea index (AHI) decreased significantly (P < .001) from 36.6 (18.9) to 12.3 (11.4). The success rate, defined by an AHI of lower than 20 and a 50% decrease in AHI, were 74% (37 of 50 patients). Even patients who were not categorized into the success group had a decreased AHI. The success rates of patients with mild, moderate, and severe OSA were 43% (3 of 7), 82% (22 of 27), and 75% (12 of 16), respectively, and a higher success rate in patients with severe OSA showed that MAD could be applied even in patients with severe OSA. The duration of apnea and hypopnea, percentage of patients with snoring, and the Pittsburgh Sleep Quality Index were improved significantly after treatment. Epworth sleepiness scale scores and lowest oxygen saturation did not change significantly. An analysis of prognostic factors did not reveal any significant difference between the success and nonsuccess groups.
The application of MAD significantly improved nocturnal respiratory function and sleep quality in patients with OSA, even in patients with severe OSA. In patients with OSA, MAD can be used as a good alternative treatment modality regardless of severity because it is noninvasive, easy to manufacture, and has good treatment results.
Archives of otolaryngology--head & neck surgery 06/2009; 135(5):439-44. · 1.92 Impact Factor
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Hye Jin Noh,
Jin-Ho Choi,
Young Bin Song,
Hyun Chul Jo,
Ji Hyun Yang,
Sang Min Kim, Hyun Jong Lee,
Joon Hyuk Choi,
Soo Hee Choi,
Joo Yong Hahn,
Seung Hyuk Choi,
Hyeon Cheol Gwon
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ABSTRACT: Intramural hematoma formation is not a well-studied complication of percutaneous coronary intervention. We describe a patient with stable angina who developed an intramural hematoma during elective percutaneous coronary intervention (PCI) in the right coronary artery (RCA). Total occlusion with dense dye staining developed a long way from the distal RCA, near the posterior descending artery bifurcation site. The true lumen was compressed by the enlarged, tense, false lumen. The patient was successfully treating with intravascular ultrasound-guided fenestration using a cutting balloon, and a stent was implanted in the distal RCA.
Korean Circulation Journal 04/2009; 39(4):171-4.
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ABSTRACT: The Allergic rhinitis and its impact on asthma (ARIA) guidelines were suggested for use to classify allergic rhinitis (AR). However, few studies have been performed in Asians. The objective of this study is to identify the clinical characteristics of AR in Korean patients according to the ARIA guidelines.
For the study, 610 patients who had been diagnosed with allergic rhinitis at Seoul National University Bundang Hospital and 545 patients who had been diagnosed with allergic rhinitis at 3 local clinics were included. All the patients were categorized into 4 groups, such as the mild intermittent, mild persistent, moderate-severe intermittent and moderate-severe persistent groups. The patients were given a questionnaire on allergic rhinitis-related symptoms and they underwent blood tests, including the blood eosinophil count and the serum total IgE level.
The most prevalent type was the moderate-severe persistent group (34.7%), and the moderate-severe intermittent group (17.1%) was the rarest. There were significant differences among the 4 groups for olfaction (P<0.001), self-awareness of rhinitis (P=0.013), a previous history of AR (P<0.001), self-awareness of asthma (P=0.001) and allergic conjunctivitis (P<0.001). On the allergy laboratory tests, there was a significant difference between the groups for the eosinophi count (P=0.004). The number of blood eosinophil was more in the persistent groups than in the intermittent groups.
According to the ARIA guidelines, the moderate-severe persistent group was the most prevalent for Korean patients. Blood eosinophilia and olfactory dysfunction were the most severe in the moderate-severe persistent group.
Clinical and Experimental Otorhinolaryngology 12/2008; 1(4):196-200. · 0.92 Impact Factor
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ABSTRACT: To evaluate the chronic bony changes in the paranasal sinuses of longstanding chronic rhinosinusitis (CRS) in pediatric patients and to compare them with normal controls.
A single-institution retrospective analysis.
Thirty 15- and 16-year-old children with longstanding CRS, for more than 2 years, despite maximal medical treatment and had a Lund CT score over 20 were enrolled as the CRS group. They were compared with 45 age and gender matched randomly selected normal controls without CRS. No enrolled patient had a history of nasal or adenoid surgery. The volume of the maxillary sinus was measured using a three-dimensional CT reconstruction program (V-works 4.0). The bony thickness of the maxillary (MS) and ethmoid sinuses (ES) and the middle turbinate (MT) was measured and compared. In addition, we evaluated the effect of disease duration on the sinus volume and bony thickness.
The mean volume of the MS was 22.5+/-4.4 cm(3) in the normal group and 20.0+/-4.1 cm(3) in the CRS group; this difference was statistically significant (p=0.02). However, there was no correlation found between the disease duration and maxillary sinus volume (r=-0.07, p=0.69). The mean thicknesses of the bony walls were 1.0+/-0.4 mm (MS), 0.8+/-0.4 mm (ES) and 1.8+/-0.5 mm (MT) in the normal group and 1.2+/-0.3 mm (MS), 1.2+/-0.4 mm (ES) and 2.4+/-0.5 mm (MT) in the CRS group; these differences were significant (p<0.01). In addition, the bony thickness of the ES was significantly correlated with the duration of symptoms (r=0.44, p=0.03).
The volume of the maxillary sinuses decreased and the bony thickness of the paranasal sinuses increased with longstanding pediatric CRS.
International Journal of Pediatric Otorhinolaryngology 01/2008; 72(1):103-8. · 1.17 Impact Factor
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ABSTRACT: Subjects with high normal blood pressure (BP: systolic, 130-139 mmHg or diastolic, 85-89 mmHg) have higher cardiovascular risks compared with individuals with normal BP (systolic BP, 120-129 mmHg or diastolic BP, 80-84 mmHg). In the present study the prevalence of microalbuminuria and cardiovascular risk factors, as well as factors that influence microalbuminuria, were assessed in 2 groups of subjects with prehypertension.
Of 2,678 prehypertensive subjects (1,689 men, 989 women), none had a history of diabetes or hypertension. Urine albumin excretion was measured by an immunoradiometric assay in a morning urine sample. The prevalence of microalbuminuria in the high normal BP group was higher than in the normal BP group (4.9% vs 2.8%, p=0.009). Subjects with high normal BP were older, and had higher prevalence of males and metabolic syndrome; larger waist circumference and body mass index, higher levels of triglycerides, fasting blood glucose, uric acid and ferritin, and lower levels of high-density lipoprotein-cholesterol were more common in subjects with high normal BP than in those with normal BP. Multiple logistic regression analysis showed that the high normal BP category had an independently significant association with microalbuminuria (odds ratio=1.692, 95% confidence interval 1.097-2.611).
Subjects with high normal BP have greater risk factors for cardiovascular disease, including microalbuminuria, than those with normal BP. Further investigations are needed to ascertain whether more positive treatment strategies for the early prevention of cardiovascular disease might be needed for individuals with high normal BP.
Circulation Journal 09/2007; 71(8):1283-7. · 3.77 Impact Factor
