RESUMEN
OBJECTIVES: Osteoclasts are multinucleated giant cells which can resorb bone and differentiated from hematopoietic cells. We have previously reported murine osteoclast-associated receptor (OSCAR) may be an important bone-specific regulator of osteoclast differentiation. We have cloned soluble form of human OSCAR (hOSCAR) and examined the role of hOSCAR on osteoclast differentiation. METHODS: Osteoclast differentiation was induced by treatment with macrophage colony-stimulating factor (M-CSF) and receptor activator of nuclear factor kappa B ligand (RANKL) and tartrate-resistant acid phosphatase (TRAP) staining and pit formation were performed. Expression was measured by flow cytometry analysis, Northern and Western blot analysis. RESULTS: hOSCAR is expressed in osteoclast cells and involved in the differentiation of osteoclasts from peripheral blood mononuclear cells (PBMC). Two alternatively spliced forms (soluble hOSCAR [hOSCAR-S]) of hOSCAR were identified from osteoclasts complementary deoxyribonucleic acid (cDNA) library derived from PBMC. Putative transmembrane domain was not found in hOSCAR-S forms and it suggested that these forms might be secreted from osteoclast cells. These secreted forms of hOSCAR attenuated RANKL-induced osteoclast formation and bone resorption. CONCLUSIONS: Human osteoclasts express at least five different OSCAR messenger ribonucleic acid (mRNA) isoforms which could play different regulatory roles for differentiation. The secreted forms of hOSCAR might be a negative regulator of membrane-bounded forms of OSCAR.
Asunto(s)
Humanos , Fosfatasa Ácida , Empalme Alternativo , Western Blotting , Células Clonales , ADN , Citometría de Flujo , Células Gigantes , Isoenzimas , Factor Estimulante de Colonias de Macrófagos , Osteoclastos , Isoformas de Proteínas , Ligando RANK , ARNRESUMEN
OBJECTIVES: Osteoclasts are multinucleated giant cells which can resorb bone and differentiated from hematopoietic cells. We have previously reported murine osteoclast-associated receptor (OSCAR) may be an important bone-specific regulator of osteoclast differentiation. We have cloned soluble form of human OSCAR (hOSCAR) and examined the role of hOSCAR on osteoclast differentiation. METHODS: Osteoclast differentiation was induced by treatment with macrophage colony-stimulating factor (M-CSF) and receptor activator of nuclear factor kappa B ligand (RANKL) and tartrate-resistant acid phosphatase (TRAP) staining and pit formation were performed. Expression was measured by flow cytometry analysis, Northern and Western blot analysis. RESULTS: hOSCAR is expressed in osteoclast cells and involved in the differentiation of osteoclasts from peripheral blood mononuclear cells (PBMC). Two alternatively spliced forms (soluble hOSCAR [hOSCAR-S]) of hOSCAR were identified from osteoclasts complementary deoxyribonucleic acid (cDNA) library derived from PBMC. Putative transmembrane domain was not found in hOSCAR-S forms and it suggested that these forms might be secreted from osteoclast cells. These secreted forms of hOSCAR attenuated RANKL-induced osteoclast formation and bone resorption. CONCLUSIONS: Human osteoclasts express at least five different OSCAR messenger ribonucleic acid (mRNA) isoforms which could play different regulatory roles for differentiation. The secreted forms of hOSCAR might be a negative regulator of membrane-bounded forms of OSCAR.
Asunto(s)
Humanos , Fosfatasa Ácida , Empalme Alternativo , Western Blotting , Células Clonales , ADN , Citometría de Flujo , Células Gigantes , Isoenzimas , Factor Estimulante de Colonias de Macrófagos , Osteoclastos , Isoformas de Proteínas , Ligando RANK , ARNRESUMEN
PURPOSE: To evaluate the effects of a mixed solution of sodium hyaluronate and sodium carboxymethylcellulose (HACMC, Guardix-sol(R)) for reducing postoperative adhesion after endonasal dacryocystorhinostomy. METHODS: Endonasal dacryocystorhinostomy was performed on 58 patients with obstructions of the nasolacrimal system. We divided the 58 patients into two groups. At the completion of endonasal dacryocystorhinostomy, HACMC was applied to the operative site in the experimental group (n=26) and normal saline was applied in the control group (n=32). For the evaluation of clinical effectsand postoperative adhesion, subjective symptom score evaluations, lacrimal irrigation tests, fluorescein disappearance tests, and endoscopic examinations were performed at 1 week, 1 month, 3 months, and 6 months postoperatively. RESULTS: The HACMC-treated patients showed better results than the control patients for subjective symptom scores, lacrimal irrigation tests, and fluorescein disappearance tests, but these differences were not statistically significant. Upon endoscopic examination, the HACMC group revealed lower incidence of adhesion at 1 week after surgery and lower severity of adhesion throughout the period of observation (p<0.05). CONCLUSIONS: The application of a mixed solution of HACMC may effectively reduce postoperative adhesion after endonasal dacryocystorhinostomy.
Asunto(s)
Humanos , Carboximetilcelulosa de Sodio , Dacriocistorrinostomía , Fluoresceína , Ácido Hialurónico , Incidencia , SodioRESUMEN
PURPOSE: This study was performed to evaluate the changes in tear film and ocular surface after dacryocystorhinostomy (DCR) in patients with primary acquired nasolacrimal duct obstruction. METHODS: Forty subjects who showed successful results at three months after endoscopic DCR were investigated. The changes in tear breakup time (BUT), basal secretion test (BST), corneal sensitivity test (CST), tear clearance rate (TCR) and keratoepitheliopathy (KEP) were evaluated. RESULTS: The mean age was 57.4+/-13.2 years (29~77 years). Preoperative BST and BUT in eyes which underwent DCR were 13.21+/-3.79 mm and 8.20+/-2.30 seconds, respectively. Three months after the operation, the respective values were 9.13+/-3.77 mm (p=0.01) and 6.27+/-2.20 seconds (p=0.03). Preoperative CST, TCR and KEP in eyes which underwent DCR were 57.89+/-4.18 mm, 3.26+/-0.91 and 0.12+/-0.53, respectively. Three months after the operation, the respective values were 57.75+/-3.55 mm (p=0.32), 3.04+/-0.87 (p=0.08) and 0.13+/-0.54 (p=0.08). No changes were observed between the preoperative and postoperative tear parameters in fellow eyes. CONCLUSIONS: The changes in tear film parameters including BST and BUT should be considered in patients who receive endoscopic DCR.
Asunto(s)
Humanos , Dacriocistorrinostomía , Ojo , Conducto Nasolagrimal , LágrimasRESUMEN
PURPOSE: To compare the postoperative outcomes between Akreos MI60 and Akreos AO intraocular lens (IOLs) after cataract surgery. METHODS: A prospective analysis among 55 eyes of 55 patients who had undergone microcoaxial phacoemulsification and implantation of aspheric IOLs (Akreos MI60, 30 eyes; Akreos Adapt-AO, 25 eyes) was performed. The best corrected visual acuity (BCVA), spherical equivalent, intraocular pressure (IOP), corneal thickness, endothelial cell density (ECD), surgically induced astigmatism (SIA), predictability of postoperative spherical equivalent, higher order aberrations, and contrast sensitivity test were evaluated during the follow-up period of 3 months. RESULTS: There were no significant differences in BCVA, spherical equivalent, IOP, corneal thickness, ECD, SIA, higher order aberrations and contrast sensitivity test (p>0.05). The predictability of postoperative spherical equivalent in the Akreos Adapt-AO (-0.57+/-0.22D) represented statistically significant myopic shift compared with the Akreos MI60 group (-0.05+/-0.69D) (p=0.02). CONCLUSIONS: Both the Akreos MI60 and the Akreos Adapt-AO implantation groups performed similiarly, following cataract surgery, showed similar visual function.
Asunto(s)
Humanos , Astigmatismo , Catarata , Sensibilidad de Contraste , Células Endoteliales , Ojo , Estudios de Seguimiento , Presión Intraocular , Lentes Intraoculares , Facoemulsificación , Estudios Prospectivos , Agudeza VisualRESUMEN
PURPOSE: To compare the visual function and postoperative refraction between two aspheric intraocular lenses (IOLs) after microcoaxial cataract surgery. METHODS: A prospective analysis of 60 eyes of 58 patients who had undergone microcoaxial phacoemulsification and implantation of aspheric IOLs (AcrySof IQ, 30 eyes; Akreos MI60, 30 eyes) was performed. The best corrected visual acuity (BCVA), spherical equivalent, intraocular pressure (IOP), corneal thickness, endothelial cell density (ECD), predictability of postoperative spherical equivalent, higher order aberrations, contrast sensitivity test, satisfaction, and glare were evaluated during the follow-up period of three months. RESULTS: There were no significant differences in BCVA, spherical equivalent, IOP, corneal thickness, or ECD (p>0.05). The predictability of the postoperative spherical equivalent in the AcrySof IQ and Akreos MI60 IOL groups was not significantly different (p=0.59), and the two groups showed good anterior-posterior stability during the postoperative three months. There were no significant differences in higher order aberrations, contrast sensitivity test, satisfaction or glare (p>0.05). CONCLUSIONS: Both AcrySof IQ and Akreos MI60 implantation groups showed similar visual functions and postoperative spherical equivalents after microcoaxial cataract surgery.
Asunto(s)
Humanos , Catarata , Sensibilidad de Contraste , Células Endoteliales , Ojo , Estudios de Seguimiento , Deslumbramiento , Presión Intraocular , Lentes Intraoculares , Facoemulsificación , Estudios Prospectivos , Agudeza VisualRESUMEN
PURPOSE: We are to know the distribution of the axial lengths and functional equators in strabismus patients and to establish surgical formula considering axial lengths in addition to the preoperative deviation angle. METHODS: Included were 100 eyes of 50 strabismus children under 12 years old who do not have other organic disorders and received strabismus surgery under general anesthesia. We measured axial lengths and calculated functional equators. RESULTS: Mean value of axial length was 22.01 +/- 0.97 mm. The distances from limbus to the functional equators of medial and lateral rectus muscles were 11.35 +/- 0.67 mm and 18.48 +/- 0.94 mm each and direct distance for that were 10.86 +/- 0.62 mm and 16.40 +/- 0.79 mm. CONCLUSIONS: By the conventional amount of both medial rectus muscle recession in esotropia patient, the recession for the preoperative deviation angle of 40 prism diopter locates medial rectus muscle at the functional equator. So taking both axial length and preoperative deviation angle into account, we proposed new surgical formula for esotropia as follows. For the preoperative deviation angle of 40 prism diopter, we are to recess both medial rectus muscles to the functional equator calculated by axial length and for the preoperative deviation angle smaller or larger than 40 prism diopter, recess to the site anterior or posterior to the functional equator proportionally.