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1.
Plast Reconstr Surg ; 153(1): 91-96, 2024 01 01.
Artigo em Inglês | MEDLINE | ID: mdl-36988641

RESUMO

SUMMARY: Dorsal preservation rhinoplasty, which preserves the bony-cartilaginous junction and the keystone area, has been gaining popularity in Western countries for hump nose correction. The authors aimed to report the feasibility, surgical outcome, and technical considerations of dorsal preservation rhinoplasty in Asian hump nose correction. A retrospective case series study was performed on nine patients who had undergone primary dorsal preservation rhinoplasty for hump nose correction. Rhinoplasty was performed by the senior author (H.R.J.) from March of 2019 to December of 2021. Clinical charts, graphic operation records, and standardized photographs of the patients were retrospectively reviewed and analyzed. Operations were performed using an open approach in all patients. Either the push-down technique ( n = 3) or the let-down technique ( n = 6) was used for dorsal preservation. All patients underwent tip modification, with or without radix grafting, together with dorsal preservation rhinoplasty. Bony step-off camouflage at the transverse osteotomy site was required in three patients. After surgery, both the nasofacial and rhinion angles exhibited significant changes ( P = 0.008). In all cases, hump reduction was successful, without recurrence or saddle nose, and no major complications occurred. All patients were satisfied with the aesthetic and functional results. Dorsal preservation rhinoplasty seems to be a viable option for correcting Asian hump noses. Technical considerations include a preference for the open approach; camouflage of bony step-off deformity; and strategic management of the septal cartilage, in consideration of tip modification.


Assuntos
Rinoplastia , Humanos , Rinoplastia/métodos , Septo Nasal/cirurgia , Estudos Retrospectivos , Nariz/cirurgia , Cartilagem/cirurgia , Estética
2.
Clin Exp Otorhinolaryngol ; 15(3): 247-253, 2022 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-35413169

RESUMO

OBJECTIVES: Nonsurgical rhinoplasty using threads has gained popularity in recent years. While the benefits of this procedure have been emphasized, possible complications and their management are not well-known. This study aimed to present the surgical management and results of the complications of thread rhinoplasty. METHODS: We retrospectively reviewed the medical records of seven patients who underwent revision rhinoplasty due to the complications of thread rhinoplasty from January 2018 to May 2021. The presentation of complications, detailed surgical procedures, and outcomes of revision rhinoplasty were reviewed. RESULTS: Visible or extruded threads at the tip were the most common complication, followed by dorsum irregularity. All the threads were unabsorbed and intact in shape, even several years after insertion. Thread removal necessitated careful tissue dissection, resulting in the loss of tip support and dorsal irregularity. To restore the tip support and camouflage the dorsum shape, an autologous tissue graft was needed. CONCLUSION: Removal of threads at the tip and dorsum was accompanied by structural weakening and partial tissue loss, which required tip support restoration and dorsum camouflage.

3.
Clin Exp Otorhinolaryngol ; 14(4): 399-406, 2021 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-33677851

RESUMO

OBJECTIVES: Hereditary hemorrhagic telangiectasia (HHT) is an autosomal dominant vascular disorder characterized by recurrent epistaxis, telangiectasia, and visceral arteriovenous malformations (AVMs). Activin A receptor-like type 1 (ACVRL1/ALK1) and endoglin (ENG) are the principal genes whose mutations cause HHT. No multicenter study has yet investigated correlations between genetic variations and clinical outcomes in Korean HHT patients. METHODS: Seventy-two members from 40 families suspected to have HHT based on symptoms were genetically screened for pathogenic variants of ACVRL1 and ENG. Patients with genetically diagnosed HHT were also evaluated. RESULTS: In the HHT genetic screening, 42 patients from 24 of the 40 families had genetic variants that met the pathogenic criteria (pathogenic very strong, pathogenic strong, pathogenic moderate, or pathogenic supporting) based on the American College of Medical Genetics and Genomics Standards and Guidelines for either ENG or ACVRL1: 26 from 12 families (50%) for ENG, and 16 from 12 families (50%) for ACVRL1. Diagnostic screening of 42 genetically positive HHT patients based on the Curaçao criteria revealed that 24 patients (57%) were classified as having definite HHT, 17 (41%) as having probable HHT, and 1 (2%) as unlikely to have HHT. Epistaxis was the most common clinical presentation (38/42, 90%), followed by visceral AVMs (24/42, 57%) and telangiectasia (21/42, 50%). Five patients (12%) did not have a family history of HHT clinical symptoms. CONCLUSION: Only approximately half of patients with ACVRL1 or ENG genetic variants could be clinically diagnosed as having definite HHT, suggesting that genetic screening is important to confirm the diagnosis.

4.
Facial Plast Surg ; 36(5): 528-538, 2020 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-33368077

RESUMO

The abundance, biocompatibility, and versatility of autologous costal cartilage allow rhinoplasty surgeons to perform an array of maneuvers needed to successfully manage cases that require an ample source of grafting materials. Hence, there has been a steady increase in the use of costal cartilage in Asian rhinoplasty. Despite its many advantages, autologous costal cartilage rhinoplasty is also associated with complications, which include warping, infection, and displacement, as well as donor-site morbidity issues such as pneumothorax, pain, and chest scars. Many of these can be minimized by adhering to the recommended techniques. In this review, operative techniques that focus on the prevention and management of complications associated with the use of autologous costal cartilage are presented.


Assuntos
Cartilagem Costal , Rinoplastia , Povo Asiático , Cicatriz , Humanos , Rinoplastia/efeitos adversos , Transplante Autólogo
5.
Clin Exp Otorhinolaryngol ; 13(3): 213-214, 2020 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-32781823
7.
J Craniofac Surg ; 30(8): 2375-2377, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31592841

RESUMO

Conventional open reduction and internal fixation of frontal sinus anterior wall fractures are associated with risks of visible scarring and limited access to the nasofrontal duct. The goal of this study was to report the minimally invasive surgical techniques and their results in cases with frontal sinus anterior wall fractures. A retrospective study was performed on 20 consecutive cases of isolated anterior wall fractures of the frontal sinus between July, 2008 and February, 2017. Causes of injury, interval between the injury and operation, and operation time were reviewed. The fractures were reduced using the minimally invasive techniques of endoscopic endonasal reduction or reduction through a small trephination. Anatomical and aesthetic outcomes were evaluated, and postoperative complications were reviewed. The fractures were reduced with endoscopic endonasal techniques in 11 patients and through a small trephination with a minimal incision in the forehead in 9 patients. The fractures were successfully reduced in all cases. The mean follow-up period was 21.2 months, and no postoperative complications were observed. For isolated anterior wall fractures of the frontal sinus, minimally invasive techniques, such as endonasal endoscopic reduction or reduction through a small trephination, are safe and effective options.


Assuntos
Seio Frontal/cirurgia , Adolescente , Adulto , Humanos , Masculino , Procedimentos Cirúrgicos Minimamente Invasivos , Complicações Pós-Operatórias , Estudos Retrospectivos , Adulto Jovem
8.
Aesthetic Plast Surg ; 43(5): 1295-1300, 2019 10.
Artigo em Inglês | MEDLINE | ID: mdl-31139910

RESUMO

BACKGROUND: The authors initiated the use of a mastoid periosteum graft to augment or camouflage the dorsum and radix. This report describes the techniques and treatment outcomes of mastoid periosteum grafts in primary and revision rhinoplasty. MATERIALS AND METHODS: Medical records of 62 patients who underwent rhinoplasty with mastoid periosteum were reviewed retrospectively. Of these, 21 patients who participated in follow-up for more than 6 months were analyzed through a comparison of pre- and postoperative photographs. Aesthetic results were scored on a scale of 0 to 4 (0 = poor, 1 = fair, 2 = moderate, 3 = good, 4 = excellent) with photographic evaluation by two independent surgeons. RESULTS: A mastoid periosteum graft was used in 32 primary and 30 revision cases. The graft was used to augment the radix (28 cases), dorsum (15 cases), and both radix and dorsum (19 cases). Cartilage underlay was combined with mastoid periosteum grafts in 38 patients (61.3%, 17 in radix graft, 8 in dorsal graft, and 13 in both). The aesthetic outcome score assessed in 21 patients was 2.8 on average (3.2 in primary and 2.4 in revision cases). Cartilage combined cases showed better aesthetic outcome than free graft cases (3.1 vs. 2.5, respectively). Three cases of partial graft resorption were found, but there were no major complications. CONCLUSIONS: Mastoid periosteum grafting is a safe and effective method to augment the radix or dorsum in primary and revision rhinoplasty. Long-term partial resorption cannot be completely excluded, which necessitates further study. LEVEL OF EVIDENCE IV: This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .


Assuntos
Processo Mastoide/cirurgia , Periósteo/transplante , Complicações Pós-Operatórias/cirurgia , Reoperação/métodos , Rinoplastia/efeitos adversos , Centros Médicos Acadêmicos , Adulto , Estudos de Coortes , Estética , Feminino , Seguimentos , Sobrevivência de Enxerto , Humanos , Masculino , Pessoa de Meia-Idade , Cartilagens Nasais/cirurgia , Septo Nasal/cirurgia , Complicações Pós-Operatórias/fisiopatologia , República da Coreia , Estudos Retrospectivos , Rinoplastia/métodos , Medição de Risco , Estatísticas não Paramétricas , Técnicas de Sutura , Resultado do Tratamento
9.
Clin Exp Otorhinolaryngol ; 11(4): 288-292, 2018 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-30021415

RESUMO

OBJECTIVES: To investigate the common causes of persistent septal deviation in revision septoplasty and to report the surgical techniques and results to correct them. METHODS: A total of 100 consecutive patients (86 males) who had revision septoplasty due to persistent septal deviation from 2008 and 2014 were included in the study. Their mean age was 35.6 years and the mean follow-up duration was 9.1 months. Presenting symptoms, sites of persistent septal deviation, techniques used to correct the deviation, and surgical results were reviewed. RESULTS: The mean interval between primary and revision surgery was 6.2 years. Forty-eight patients received revision septoplasty and 52 received revision septoplasty combined with rhinoplasty. Nasal obstruction was the most presenting symptom in almost all patients. The most common site of persistent septal deviation was middle septum (58%) followed by caudal septum (31%). Correcting techniques included further chondrotomy and excision of deviated portion in 76% and caudal batten graft in 39%. Rhinoscopic and endoscopic exams showed straight septum in 97% and 92 patients had subjective symptom improvement postoperatively. CONCLUSION: Middle septum and caudal septum were common sites of persistent deviation. Proper chondrotomy with excision of deviated middle septum and correction of the caudal deviation with batten graft are key maneuvers to treat persistent deviation.

11.
ACS Appl Mater Interfaces ; 9(22): 19161-19175, 2017 Jun 07.
Artigo em Inglês | MEDLINE | ID: mdl-28557438

RESUMO

Expanded polytetrafluoroethylene (ePTFE), also known as Gore-Tex, is widely used as an implantable biomaterial in biomedical applications because of its favorable mechanical properties and biochemical inertness. However, infection and inflammation are two major complications with ePTFE implantations, because pathogenic bacteria can inhabit the microsized pores, without clearance by host immune cells, and the limited biocompatibility can induce foreign body reactions. To minimize these complications, we covalently grafted a biomembrane-mimic polymer, poly(2-methacryloyloxylethyl phosphorylcholine) (PMPC), by partial defluorination followed by UV-induced polymerization with cross-linkers on the ePTFE surface. PMPC grafting greatly reduced serum protein adsorption as well as fibroblast adhesion on the ePTFE surface. Moreover, the PMPC-grafted ePTFE surface exhibited a dramatic inhibition of the adhesion and growth of Staphylococcus aureus, a typical pathogenic bacterium in ePTFE implants, in the porous network. On the basis of an analysis of immune cells and inflammation-related factors, i.e., transforming growth factor-ß (TGF-ß) and myeloperoxidase (MPO), we confirmed that inflammation was efficiently alleviated in tissues around PMPC-grafted ePTFE plates implanted in the backs of rats. Covalent PMPC may be an effective strategy for promoting anti-inflammatory and antibacterial functions in ePTFE implants and to reduce side effects in biomedical applications of ePTFE.

12.
JAMA Facial Plast Surg ; 19(3): 183-188, 2017 May 01.
Artigo em Inglês | MEDLINE | ID: mdl-28334327

RESUMO

IMPORTANCE: Studies comparing surgical results of rhinoplasty using autologous costal cartilage (ACC) and irradiated homologous costal cartilage (IHCC) are rare. OBJECTIVES: To compare the clinical results of major augmentation rhinoplasty using ACC vs IHCC and analyze the histologic properties of both types of cartilage. DESIGN, SETTING, AND PARTICIPANTS: A retrospective clinical study was conducted among patients who had undergone rhinoseptoplasty using ACC or IHCC from January 1, 2009, to December 31, 2014. Patients were followed up for more than 1 year after surgery and the histologic characteristics of ACC and IHCC were compared. The details of the surgical procedures and complications, including warping, infection, resorption, and/or donor-site morbidity, were evaluated by reviewing medical records and facial photographs. Patients' subjective satisfaction with aesthetic and functional results was evaluated using a questionnaire. MAIN OUTCOMES AND MEASURES: The details of the surgical procedures and complications, including warping, infection, resorption, and/or donor-site morbidity; patients' subjective satisfaction with aesthetic and functional results' objective evaluation of surgical outcomes, including symmetry, dorsal height, dorsal length, dorsal width, tip projection, tip rotation, tip width, and overall result; and histologic structures. Objective evaluation of surgical outcomes was graded using the Objective Rhinoplasty Outcome Score, which assessed symmetry, dorsal height, dorsal length, dorsal width, tip projection, tip rotation, tip width, and overall result. Histologic structures were evaluated using hematoxylin and eosin, Masson trichrome, Alcian blue, and Verhoeff elastic stains. RESULTS: A total of 63 patients (27 males and 36 females; mean [SD] age, 30.6 [9.5] years) had rhinoseptoplasty using ACC and 20 (9 males and 11 females; mean [SD] age, 35.4 [15.4] years) had rhinoseptoplasty using IHCC. Among observed complications, only notable resorption occurred more frequently in patients using IHCC (6 [30%]) than with ACC (2 [3%]) (P = .002). In subjective evaluations of aesthetic satisfaction, patients who received ACC showed significantly greater satisfaction (37 of 51 patients [73%] were very satisfied) than did those who received IHCC (6 of 20 [30%]) (P = .001). However, there was no between-group difference in subjective functional outcomes: 4 of 51 patients receiving ACC (8%) and 5 of 20 receiving IHCC (25%) were satisfied (P = .50) and 45 of 51 receiving ACC (88%) and 15 of 20 receiving IHCC (75%) were very satisfied (P = .15). Regarding objective aesthetic outcomes, all scores for both ACC and IHCC were more than 3.1 (between good and excellent). Histologic analyses showed larger, more evenly distributed, uniform chondrocytes and more collagens and proteoglycan contents in ACC than in IHCC. CONCLUSIONS AND RELEVANCE: Compared with patients receiving IHCC, those receiving ACC for rhinoseptoplasty showed superior aesthetic satisfaction; ACC also had less frequent notable resorption. Autologous costal cartilage also had better histologic properties than IHCC did, suggesting it as an ideal graft material with less chance of long-term resorption. LEVEL OF EVIDENCE: 3.


Assuntos
Cartilagem Costal/transplante , Rinoplastia/métodos , Adolescente , Adulto , Cartilagem Costal/efeitos da radiação , Estética , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Satisfação do Paciente , Complicações Pós-Operatórias , Reoperação , República da Coreia , Estudos Retrospectivos , Transplante Autólogo , Resultado do Tratamento
14.
Thorax ; 72(7): 635-645, 2017 07.
Artigo em Inglês | MEDLINE | ID: mdl-27885166

RESUMO

RATIONALE: Interleukin (IL)-33, a new member of the IL-1 family, is constitutively expressed in epithelial tissues and lymphoid organs and plays an important role in the pathogenesis of allergic disease. However, the role of IL-33 in chronic rhinosinusitis with nasal polyps (CRSwNP) remains unclear. OBJECTIVE: To investigate the role of IL-33 in the pathophysiology of CRSwNP. METHODS: We investigated IL-33 expression and its cellular origins in the nasal polyps (NPs) of human subjects by immunohistochemistry (IHC), quantitative reverse transcription PCR (qRT-PCR), and multiplex cytokine assays. Correlations between IL-33 expression and other inflammatory markers were also explored. To investigate the role of IL-33 in CRSwNP, anti-IL-33 antibody was used in a murine model of CRS. RESULTS: Uncinate process tissues from control (19), CRSsNP (61), CRSwNP (69) and NP tissues (71) were used in this study. Increased expression of IL-33 mRNA and protein in patients with CRSwNP compared with controls was observed. The concentration of IL-33 protein in CRSwNP was positively correlated with the number of neutrophils and the expression of several Th1 and Th17 inflammatory markers, including interferon (IFN)-γ, IL-1ß, tumour necrosis factor (TNF)-α, IL-17A, IL-22, and various markers for neutrophil recruitment. However, protein levels of IL-5 and quantity of eosinophils were inversely correlated with levels of IL-33. The expression of tissue inhibitor of metalloproteinase (TIMP)-1 was negatively correlated with IL-33 protein levels, while the expression of matrix metalloproteinase (MMP)-2 and MMP-9 was positively correlated with IL-33 protein levels. In animal studies, IL-33 expression was upregulated in the CRSwNP group compared with controls. Anti-IL-33 treatment reduced the thickness of oedematous mucosa, subepithelial collagen deposition, and infiltration of neutrophils, but infiltration of eosinophils was not reduced. This treatment also inhibited the expression of neutrophilic inflammatory cytokines, but not IL-4. In addition, the expression of intracellular adhesion molecule 1, vascular adhesion molecule 1 and CXCL-2 in the nasal mucosa was suppressed in mice treated with anti-IL-33 antibody. CONCLUSIONS: Our data suggest a role for IL-33 in the pathogenesis of CRSwNP via neutrophil recruitment. Therefore, anti-IL-33 may provide a new treatment strategy to target infiltrating neutrophils in CRSwNP.


Assuntos
Interleucina-33/genética , Interleucina-33/metabolismo , Pólipos Nasais/metabolismo , RNA Mensageiro/metabolismo , Rinite/metabolismo , Sinusite/metabolismo , Adulto , Animais , Anticorpos Neutralizantes/uso terapêutico , Estudos de Casos e Controles , Doença Crônica , Modelos Animais de Doenças , Feminino , Expressão Gênica , Humanos , Interferon gama/metabolismo , Interleucina-17/metabolismo , Interleucina-33/imunologia , Interleucina-5/metabolismo , Interleucinas/metabolismo , Contagem de Leucócitos , Camundongos , Camundongos Endogâmicos BALB C , Pessoa de Meia-Idade , Pólipos Nasais/complicações , Pólipos Nasais/tratamento farmacológico , Pólipos Nasais/genética , Neutrófilos , Rinite/complicações , Rinite/genética , Sinusite/complicações , Sinusite/genética , Inibidor Tecidual de Metaloproteinase-1/metabolismo , Interleucina 22
15.
Aesthetic Plast Surg ; 40(6): 832-839, 2016 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-27752742

RESUMO

BACKGROUND: Warping remains a primary issue in the use of autologous costal cartilage for nasal augmentation. To mitigate such issues, diced cartilage in fascia (DCIF) has been proposed as an alternative for use in rhinoplasty. The objective of this study was to assess the efficacy of DCIF in nasal dorsal augmentation for Asian patients, with particular focus on the strengths and weaknesses of this material. MATERIALS AND METHODS: Fifteen patients who underwent major dorsal augmentation with DCIF during the last 2 years were retrospectively reviewed. Diced cartilage wrapped in deep temporal fascia was used. RESULTS: Costal cartilage was used as the dicing material in 11 cases, while a mixture of septal and conchal cartilage was used in the other four cases. In the majority of cases, DCIF was inserted from the radix to the supratip. In 10 of the 15 cases, acceptable aesthetic and functional results were obtained; at a mean follow-up of 13.3 months, no complications were observed in these patients. In the remaining five cases, complications such as mild deviation, mild supratip depression, irregularities of the nasal dorsum, considerable resorption, and hair loss at the fascial harvesting site were observed. CONCLUSIONS: This study suggests that DCIF is useful in major nasal dorsal augmentation; however, it involves certain complications. Although obvious warping can be avoided, irregularity and mild deviation may still occur, potentially requiring technical refinement. LEVEL OF EVIDENCE V: This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .


Assuntos
Cartilagem Costal/transplante , Fáscia/transplante , Cartilagens Nasais/cirurgia , Rinoplastia/métodos , Coleta de Tecidos e Órgãos/métodos , Adulto , Povo Asiático/estatística & dados numéricos , Estudos de Coortes , Cartilagem Costal/cirurgia , Estética , Feminino , Seguimentos , Sobrevivência de Enxerto , Humanos , Masculino , Procedimentos Cirúrgicos Nasais/métodos , Estudos Retrospectivos , Medição de Risco , Transplante Autólogo , Resultado do Tratamento , Adulto Jovem
16.
JAMA Facial Plast Surg ; 18(6): 475-480, 2016 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-27491048

RESUMO

IMPORTANCE: Combined rhinoplasty and septal perforation repair is a technically challenging procedure, and few studies have reported the outcomes. OBJECTIVE: To present the long-term surgical results of rhinoplasty with concurrent septal perforation repair. DESIGN, SETTING, AND PARTICIPANTS: This retrospective study included 17 patients who underwent rhinoplasty with concurrent septal perforation repair at a tertiary academic medical center from March 2005, through March 2015. Patients had a mean postoperative follow-up duration of 50.9 months. The etiology of the deformity, presenting symptoms, perforation size, intraoperative surgical techniques, and complications were analyzed. Final follow-up was completed on March 31, 2015. MAIN OUTCOMES AND MEASURES: Postoperative subjective (telephone survey of patient satisfaction) and objective (Objective Rhinoplasty Outcome Score) patient satisfaction and endoscopic nasal cavity examination at the last follow-up. RESULTS: Among the 17 patients (14 men; 3 women; mean [SD] age, 40 [16] years), 12 (71%) had previously undergone septoplasty and/or septorhinoplasty, 4 (24%) had nasal trauma, and 1 (6%) had an unknown cause. The main aesthetic reasons for rhinoplasty were a saddle nose deformity (10 patients [59%]) and deviated nose related to a previous surgery or trauma (5 patients [29%]). The functional reasons for surgery included nasal obstruction (14 patients [82%]) crusting (2 patients [12%]), epistaxis (1 patient [6%]), and whistling (1 patient [6%]). The perforation size varied from 2 to 30 mm, with a mean of 14.3 mm. Surgery was performed through the open rhinoplasty approach. Perforations were first closed with an advancement flap in 6 patients, rotation flap in 6 patients, a combination of both in 4 patients, and a combination of advancement flap and free mucosal graft in 1 patient, with or without interposition grafts. Rhinoplasty was performed with various grafts, maneuvers, and septal reconstruction. Complete closure with symptom relief was achieved in 15 patients (88%). The mean objective score evaluating the rhinoplasty results was 3.4 (on a scale of 0-4, where 3.4 is good to excellent). No serious complications occurred after surgery. CONCLUSIONS AND RELEVANCE: Concurrent rhinoplasty and nasal septal perforation repair is a safe and effective option when necessary. The open rhinoplasty approach facilitated septal perforation closure, whereas septal perforation repair did not affect the surgical result of rhinoplasty. LEVEL OF EVIDENCE: 4.


Assuntos
Perfuração do Septo Nasal/cirurgia , Rinoplastia/métodos , Adulto , Estética , Feminino , Humanos , Masculino , Deformidades Adquiridas Nasais/cirurgia , Satisfação do Paciente , Estudos Retrospectivos , Resultado do Tratamento
17.
Laryngoscope ; 126(8): E265-72, 2016 08.
Artigo em Inglês | MEDLINE | ID: mdl-27107152

RESUMO

OBJECTIVES/HYPOTHESIS: Chronic rhinosinusitis (CRS) is characterized by a dysfunctional host-environment interaction at the nasal mucosa. Contributions of host susceptibility factors such as atopy and aspirin sensitivity to CRS pathophysiology are well established. However, clinical studies on the effects of environmental factors are limited. This study investigates the histological and immunological effects of allergen exposure duration in animal models. STUDY DESIGN: Animal study. METHODS: A murine model for CRS with nasal polypoid lesions was induced by instilling ovalbumin/staphylococcal enterotoxin B (SEB) into murine nasal cavities for 12 (short term) or 24 weeks (long term). Histopathological changes were observed. Interleukin (IL)-4, IL-17A, IL-10, and interferon (INF)-γ levels from nasal lavage fluid were measured using enzyme-linked immunosorbent assay. Gene expressions of IL-25, thymic stromal lymphopoietin (TSLP), IL-4, IL-5, INF-γ, C-C motif chemokine ligand (CCL)-11, CCL-24, C-X-C motif chemokine ligand (CXCL)-1, CXCL-2, intercellular adhesion molecule 1, vascular cell adhesion molecule 1, matrix metallopeptidase (MMP)-7, and tissue inhibitor of metalloproteinase (TIMP)-3 were analyzed from the nasal mucosa. RESULTS: Long-term CRS models exhibited increased polypoid lesions, edematous mucosal thickness, and eosinophil infiltration compared with short-term models and showed a higher IL-10 level but lower IFN-γ and IL-17A protein levels. Moreover, CCL-24 and MMP-7 gene expressions increased whereas TIMP-3 expression decreased in long-term models compared to controls and short-term models. IL-25 and TSLP expressions were upregulated at mRNA and protein levels in short-term and long-term CRS models, respectively. Furthermore, TSLP mRNA expression was positively associated with IL-5 (r = 0.8754) and inversely correlated to IFN-γ (r = -0.7212) in CRS models. CONCLUSIONS: Prolonged allergen exposure in ovalbumin/SEB-induced CRS models maintains Th2 inflammation and reduces Th1 inflammation, which was associated with upregulation of TSLP. LEVEL OF EVIDENCE: NA Laryngoscope, 126:E265-E272, 2016.


Assuntos
Alérgenos/imunologia , Citocinas/biossíntese , Rinite/imunologia , Rinite/metabolismo , Sinusite/imunologia , Sinusite/metabolismo , Células Th2/imunologia , Alérgenos/administração & dosagem , Animais , Doença Crônica , Modelos Animais de Doenças , Feminino , Camundongos , Camundongos Endogâmicos BALB C , Fatores de Tempo , Linfopoietina do Estroma do Timo
18.
Clin Exp Otorhinolaryngol ; 9(1): 39-43, 2016 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-26976025

RESUMO

OBJECTIVES: Results of butanol threshold tests (BTTs) have shown that birhinal olfaction tends to converge toward monorhinal olfaction of the dominant nostril. However, birhinal olfaction may also be worse than dominant-side monorhinal olfaction. The goal of our study was to investigate the effect of deviated nasal septum on birhinal olfaction in patients with lateralized olfaction and to examine the effect of septoplasty in these patients. METHODS: A retrospective study with planned data collection was conducted in 518 patients who underwent BTTs. Lateralized olfaction was defined as monorhinal BTT scores that differed by >2 between sides. Underestimated birhinal olfaction was defined as a birhinal BTT score >2 lower than the dominant nostril monorhinal BTT score. Patients with lateralized olfaction were divided into 2 groups: group 1, underestimated birhinal olfaction; and group 2, without underestimated birhinal olfaction. RESULTS: Among 518 patients, 112 with lateralized olfaction were enrolled in this study. Group 1 included 23 patients (20.5%) and group 2 included 89 patients (79.5%). The severity of septal deviation (ratio of the distance of narrower side to wider side) did not differ between the 2 groups. Septal deviation to the dominant nostril was more common in group 1 than group 2 (73.9% vs. 37.6%; P=0.002). Five patients with septal deviation to the dominant nostril with underestimated birhinal olfaction underwent septoplasty. Improved lateralized olfaction occurred in all 5 patients postoperatively (P=0.041). CONCLUSION: Septal deviation of the dominant nostril in patients with lateralized olfaction is associated with underestimated birhinal olfaction. Septoplasty may improve olfaction by increasing airflow in the dominant olfactory side.

19.
PLoS One ; 11(2): e0148442, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-26849431

RESUMO

BACKGROUND: Innate and adaptive immune responses change with increasing age and affect the course of diseases. Previous study investigated immunologic alteration in Western nasal polyps (NP) which is mostly eosinophilic. However, there are no reports regarding age-related immune changes of non-eosinophilic NP (NE-NP) which is a predominant subtype in Asian population. METHODS: A total of 153 subjects, including 20 with control, 63 with chronic rhinosinusitis (CRS) without NP (CRSsNP), and 70 with CRS with NP were enrolled. Age-related changes in computed tomography (CT), cytokines and clinical information were investigated. Tissue samples were analyzed for protein levels of IL-5, IL-17A, IL-23, interferon (IFN)-γ, CCL-11, and CXCL-8, using Luminex immunoassay and for mRNA expression levels of interleukin (IL)-5, IL-17A, IL-23p19, IFN-γ, CCL-11, CXCL-1, CXCL-2, CXCL-8, and CXCR2 by quantitative RT-PCR. Immunohistochemistry (IHC) was performed for the number of inflammatory cells. RESULTS: We observed that Lund-Mackay CT scores decreased with age in NE-NP. The number of human neutrophil elastase-positive cells and myeloperoxidase gene expression decreased in older patients with NE-NP, but not in control subjects, CRSsNP, and E-NP. Neutrophil-associated cytokines including IL-17A and IL-23, were negatively correlated with age in NE-NP at the protein and mRNA levels. Additionally, the expression of CXCR2, a receptor for CXCL-1 and CXCL-2, was decreased with age in NE-NP. However, there were no age-related changes in blood neutrophil count, and neutrophil-recruiting chemokines such as CXCL-1, CXCL-2, and CXCL-8. Elderly NE-NP patients showed better endoscopic scores at 12 months after surgery compared with the non-elderly. CONCLUSION: Age-related decline in neutrophil inflammation may favorably affect postoperative results in elderly patients with NE-NP.


Assuntos
Pólipos Nasais/patologia , Pólipos Nasais/cirurgia , Adulto , Fatores Etários , Estudos de Casos e Controles , Quimiocinas/metabolismo , Citocinas/metabolismo , Endoscopia , Eosinófilos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Pólipos Nasais/imunologia , Neutrófilos/imunologia , Neutrófilos/patologia , Período Pós-Operatório , Prognóstico , Rinite/imunologia , Rinite/patologia , Rinite/cirurgia , Sinusite/imunologia , Sinusite/patologia , Sinusite/cirurgia , Tomógrafos Computadorizados
20.
Clin Plast Surg ; 43(1): 265-79, 2016 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-26616713

RESUMO

The ubiquitous goal of rhinoplasty is to make a natural-looking and attractive nose that blends harmoniously with the face. Rhinoplasty among Asians includes characteristics that distinguish the procedure from its white counterpart. Anatomic differences of the Asian nose coupled with differences in aesthetic standards demand they be approached in a unique way. In this article, peculiar aspects of Asian rhinoplasty are addressed with emphasis on surgical techniques used to obtain reliable results.


Assuntos
Povo Asiático , Rinoplastia/métodos , Cartilagem/transplante , Humanos , Próteses e Implantes
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