Regressão da polipose nasal induzida pelo dupilumabe / Regression of dupilumab-induced nasal polyps

Relato de caso de paciente com rinossinusite crônica com polipose nasal em tratamento com dupilumabe. São descritos os aspectos clínicos e o impacto na qualidade da vida do paciente. Imagens tomográficas evidenciam a melhora do processo inflamatório e a regressão dos pólipos nasais.

We report the case of a patient with chronic rhinosinusitis with nasal polyps treated with dupilumab. The clinical features and impact on the patient's quality of life are described. Computed tomography shows improvement of the inflammatory process and regression of the nasal polyps.

Sinonasal Outcomes Using Oral Corticosteroids in Patients with Chronic Rhinosinusitis with Nasal Polyps and Positive Sinonasal Cultures

Abstract Introduction Patients with chronic rhinosinusitis with nasal polyps (CRSwNP) and positive sinonasal bacterial cultures may be recalcitrant to topical therapy alone due to the additional local inflammatory burden associated with bacterial infection/colonization. Objectives To evaluate sinonasal outcomes in CRSwNP patients with a positive perioperative bacterial culture, who were treated with postoperative intranasal corticosteroids (INCS) alone versus INCS in combination with a short-term course of oral corticosteroids (OCS). Methods This is a retrospective chart review of CRSwNP patients. A total of 59 patients met inclusion criteria, including positive perioperative bacterial culture and treatment with INCS with or without concomitant use of OCS. Two cohorts were formed based on the chosen postoperative medical treatment; 32 patients underwent postoperative INCS alone, while 27 underwent INCS plus a ≤ 2-week course of OCS. The 22-item sinonasal outcome test (SNOT-22) scores and Lund-Kennedy scores (LKS) were assessed preoperatively, and at 2-week, 4-week, and 4 to 6 months after endoscopic sinus surgery (ESS). Results There were no statistically significant differences in postoperative sinonasal symptoms or endoscopic scores between the cohorts treated with INCS plus OCS versus those prescribed INCS alone (p > 0.05). Our regression model failed to demonstrate a relationship between the use of OCS and better sinonasal outcomes at 2-week, 4-week, and 4 to 6 months after ESS (p > 0.05). Conclusions Our study suggests that in a cohort of CRSwNP patients with recent bacterial infections, the postoperative use of combined OCS and INCS did not result in a statistical improvement of endoscopic and symptomatic outcomes over INCS irrigation alone. However, both treatment groups had a clinically significant improvement based on the Minimal Clinically Important Difference.

The development of nasal polyps involves early middle meatus mucous remodeling via TGF-β1 mediated PAI-1 reduction

Abstract Objective Our study aimed to elucidate the effect of PAI-1 (Plasminogen Activator Inhibitor-1) and t-PA (Tissue-type Plasminogen Activator) in tissue remodeling in nasal polyps patients. Methods Samples were streamed as early Nasal Polyps (eNP, n = 10) and inferior tissue from the same patient, mature Nasal Polyps (mNP, n = 14), and Control group (n = 15), respectively. Immunohistochemistry and immunofluorescence were applied to detect localization. Quantitative Real-Time Polymerase Chain Reaction (qRT-PCR) and Western blot were used to measure different levels among three groups. The mNP tissue was cultured in vitro and treated with TGF-β1 (Transforming Growth Factor-beta 1) activator, TGF-β1 inhibitor (SB431542), and PAI-1 inhibitor (TM5275); then Western blot, qRT-PCR, and ELISA were used to assess changes. Results The immunohistochemistry and immunofluorescence showed that PAI-1 expression decreased in eNP and mNP, mainly in epithelium and glands. The transcriptional expression and protein level of TGF-β1/t-PA/PAI-1/Collagen1 were lower in eNP than IT while mNP group demonstrated lower mRNA expression and protein level of TGF-β1/t-PA/PAI-1/Collagen1 than Control group. In mNP tissue culture in vitro, TGF-β1 activator elevated t-PA, PAI-1, and Collagen1 with higher release of PAI-1 and Collagen1 in supernatant, whereas SB431542 suppressed above reactions; TM5275 lowered transcriptional and protein level of Collagen1 in supernatant. Conclusion Early Nasal polyps' formation in middle meatus mucous is related with fibrillation system PAI-1/t-PA and tissue remodeling; moreover, nasal polyps' development is regulated by TGF-β1-mediated PAI-1 reduction. Level of evidence 3b.

Significance of leukocyte-specific transcript 1 levels in nasal mucosal tissue to predict recurrence of nasal polyps

Abstract Objective: Chronic Rhinosinusitis with Polyps (CRSwNP) is characterized by high heterogeneity and postoperative recurrence rate. This study aims to explore the clinical significance of tissue Leukocyte-Specific Transcript 1 (LST1) in predicting CRSwNP recurrence. Methods: We enrolled 62 CRSwNP patients including 30 primary CRSwNP and 32 recurrent CRSwNP patients, and 40 Healthy Controls (HC). Tissue samples were collected. Tissue LST1 expression was assessed by Reverse Transcription-Polymerase Chain Reaction (RT-PCR), Western Blotting (WB) and Immunofluorescence (IF) staining. The predictive values of LST1 expression for CRSwNP postoperative recurrence were assessed through the Receiver Operating Characteristic (ROC) curves. Results: The tissue levels of LST1 were significantly increased in the CRSwNP group than the HC group, especially in the recurrent group, and the elevated LST1 mRNA levels were positively correlated with the peripheral eosinophil percentages, tissue eosinophil counts and percentages. IF staining results showed that the LST1 protein levels were higher in CRSwNP patients, especially in the recurrent patients than in the HC group. ROC curves highlighted that tissue LST1 levels were associated with recurrent CRSwNP and exhibited a higher predictive ability for postoperative CRSwNP recurrence. Conclusion: This was the first report suggesting that LST1 expression was upregulated and associated with mucosal eosinophil infiltration and CRSwNP recurrence. Tissue LST1 could be a promising biomarker for predicting postoperative recurrence in CRwNP patients.

Vía aérea unificada: asociación entre rinosinusitis crónica y asma bronquial / Unified airway: association between chronic rhinosinusitis and bronchial asthma

Bajo la teoría de vía aérea unificada, se ha observado que el asma y la rinosinusitis crónica (RSC) tienen una estrecha relación, con efectos importantes de una enfermedad sobre el control de la otra. El objetivo de esta revisión bibliográfica es clarificar cómo ambas enfermedades se relacionan desde su origen, epidemiología, fisiopatología y tratamiento. Sabemos que la presencia de RSC se asocia con peores resultados del asma, mayor frecuencia de exacerbaciones, hospitalizaciones y mayor uso de corticoides sistémicos. Varios mecanismos parecen tener un rol en la disfunción de la vía aérea inferior en pacientes con RSC, dentro de los cuales se plantea que la respuesta inflamatoria en común de tipo Th2 juega un papel principal. Existe amplia literatura respecto al efecto que tiene el tratamiento de la RSC en el control del asma, en esta revisión se expondrá la evidencia disponible del tratamiento médico con corticoides nasales, montelukast y macrólidos, así como también del tratamiento quirúrgico de la RSC y el uso de biológicos.

Under the unified airway theory, asthma and chronic rhinosinusitis (CRS) have a close relationship, with significant effects of one disease on the control of the other. This bibliographic review aims to clarify how both diseases relate to each other from their origin, epidemiology, pathophysiology, and treatment. CRS is associated with worse asthma outcomes, higher frequency of exacerbations, hospitalizations, and increased use of systemic corticosteroids. Several mechanisms play a role in lower airway dysfunction in patients with CRS, among which the common Th2-type inflammatory response plays a substantial role. There is extensive literature regarding the effect of the treatment of CRS in the control of asthma. We present the available evidence regarding the effect of medical treatment with nasal corticosteroids, montelukast, and macrolides, as well as the surgical treatment and use of biologics.

Which are the best murine models to study Eosinophilic Chronic Rhinosinusitis? A contemporary review

Abstract Objective: Mechanisms that lead to Eosinophilic Chronic Rhinosinusitis (ECRS) are not fully established in the literature. It is desirable to assess ECRS in a model that embraces most of the related events. This article reviewed the murine models for ECRS and compared them regarding eosinophilic polypoid formation. Methods: The authors reviewed the articles that included the terms "chronic rhinosinusitis" OR "chronic sinusitis" AND "animal model". We analyzed articles in English that evaluated both the number of polyps and the number of eosinophils in the sinus mucosa of mouse models. Results: We identified a total of 15 articles describing different models of ECRS that used BALB/c or C57BL/6 mice, and different triggers/stimulants such as Staphylococcus aureus Enterotoxin B (SEB) + Ovalbumin (OVA); House Dust Mite (HDM) ± Ovalbumin (OVA); and Aspergillus oryzae Protease (AP) + Ovalbumin (OVA). OVA associated with SEB was the commonest protocol to induce ECRS in both BALB/c and C57BL/6 mice, and it produced a robust response of eosinophilic nasal polyps in both. AP + OVA protocol also led to a good ECRS response. The other models were not considered adequate to produce eosinophilic polyps in mice. Conclusion: In conclusion, OVA associated with SEB seems to produce the most robust eosinophilic sinonasal inflammation.

Angiectatic nasal polyps with pleomorphism ‒ a diagnostic pitfall

Abstract Objective To generalise the features of PANP in case of potential clinical and pathological pitfall of diagnosis. Methods Thirteen patients diagnosed as PANP were retrospectively analyzed in the Pathology Department of Capital Medical University from August 2014 to December 2019. Immunohistochemical staining with CD34, CK, Vim, Calponin, Ki67, Bcl-2, and STAT-6 was performed with envision-two steps method. Results PANP is a benign tumor presenting with gross variegated tan to gray soft fleshy tissue with foci of obvious hemorrhage and necrosis. The imaging shows internal heterogeneous hyperintensity with a peripheral hypointense rim while postcontrast images display a strong nodular and patchy enhancement. Vimentin (Vim) stain was consistently positive, while negative for CD34, STAT-6 and Bcl-2 (focal positive in two cases). Calponin and CK stain was positive in nine cases, respectively. Conclusion PANP is a clinically rare tumor which may simulate malignancy lesion. Recognizing of characteristic features in these thirteen patients would be beneficial to avoid misdiagnosis and unnecessary aggressive treatment. Level of evidence: This work was Level 2 of evidence according to the Guide for Authors.

Sphenochoanal polyps in children - a systematic review (1995-2021)

Abstract Objectives: Nasal polyps that originate from the sphenoid sinus and reach the nasopharynx are called sphenochoanal polyps. Reports on sphenochoanal polyps in children have thus far been limited only to case reports. This review aims to describe and summarize clinical presentation, diagnosis, management, surgical approaches to the sphenochoanal polyps with recurrence rate after surgery in pediatric patients reported in the literature. Methods: A systematic literature review was performed using PubMed, MEDLINE and Cochrane Library Databases for articles published prior to December 2021 to identify all studies reporting on pediatric patients with sphenochoanal polyps. Clinical presentation, management options, surgical approaches and outcomes of applied management were extracted from included studies. Results: 9 articles provided data on 11 eligible patients with an age range 3 years and 8 months-16 years. The commonest symptoms included: nasal obstruction, nasal discharge, and headache respectively. All patients were subjected to surgical treatment. No recurrences after the endoscopic sphenoidotomy were reported. Conclusion: Sphenochoanal polyps should be kept in mind in the differential diagnosis of unilateral nasal cavity or paranasal sinuses masses. Misdiagnosis can result in recurrences in patients with sphenochoanal polyp, who can be mistakenly diagnosed with antrochoanal polyp and underwent inadequate treatment not involving sphenoidotomy and exact identification of the site of implantation. The symptoms of sphenochoanal polyps are nonspecific.

Three-dimensional cell culture for the study of nasal polyps

Abstract Objectives: Three-dimensional (3D) cell cultures have many applications such as stem cell biology research, new drug discovery, cancer, and Chronic Rhinosinusitis with Nasal Polyps (CRSwNP). This disease is characterized by a significant impact on quality of life and productivity. The diversity of factors that act in the progression of CRSwNP point to the creation of a cell culture model that allows the integration of different cell types with extracellular matrix. This work aimed to create a cell culture model in 3 dimensions (spheroids) for the study of Nasal Polyposis. Methods: Nasal polyp tissue from patients diagnosed with CRSwNP was mechanically dissociated using tweezers and a scalpel and the solution containing cells and small aggregates of nasal polyps was transferred to a Petri dish containing 5 mL of culture medium at the concentration of 106 cells/mL. Results: The spheroids were cultivated for 20 days, fixed and analyzed using confocal microscopy. In a 3D culture environment, the spheroids were formed both by clustering cells and from small tissue fragments. In the cultures analyzed, the ciliary beat was present from the dissociation of the cells up to 20 days in culture. Conclusion: Our findings also point to these characteristics showing the environment generated in our study, the cells remained differentiated for a longer time and with ciliary beating. Thus, this work shows that nasal polyp-derived cells can be maintained in a 3D environment, enabling better strategies for understanding CRSwNP in situations similar to those found in vivo. Level of evidence: Laboratory studies.

Guideline for the use of immunobiologicals in chronic rhinosinusitis with nasal polyps (CRSwNP) in Brazil / Diretriz para o uso dos imunobiológicos em rinossinusite crônica com pólipo nasal (RSCcPN) no Brasil

Abstract Introduction Severe uncontrolled chronic rhinosinusitis with nasal polyps has a negative impact on an individual's quality of life. Therefore, new biologics have emerged for use in specific phenotypes of chronic rhinosinusitis, changing the paradigms of its treatment. Objective To review the current status of biologic treatment indications in chronic rhinosinusitis. Methods The Brazilian Academy of Rhinology brought together different specialists to suggest a course of action, considering its particularities and aspects related to the national reality. Results Of particular interest for decision making will be the identification of subgroups of patients refractory to pre-existing treatment options and the construction of a strategy that improves their quality of life, with the best cost-benefit ratio. Conclusion The use of biologics is a valid option for treatment in more severe cases. This strategy must be better understood and improved in the future, with more studies and greater clinical experience.

Resumo Introdução A rinossinusite crônica com pólipos nasais grave não controlada impacta negativamente na qualidade de vida do indivíduo. Para esses casos, novos imunobiológicos têm surgido, para uso em fenótipos específicos da rinossinusite crônica, e mudaram os paradigmas de seu tratamento. Objetivo Revisar o estado atual das indicações de imunobiológicos em rinossinusite crônica. Método A Academia Brasileira de Rinologia reuniu diferentes especialistas para sugerir uma conduta que considerasse suas particularidades e seus aspectos relacionados à realidade nacional. Resultados De particular interesse para a tomada de decisão serão a identificação dos subgrupos de pacientes refratários às opções de tratamento pré-existentes e a construção de uma estratégia que realmente melhore a qualidade de vida deles, dentro da melhor relação custo-benefício. Conclusão O uso de imunobiológicos é uma opção válida para tratamento em casos mais graves. Essa estratégia deve ser mais bem compreendida e aprimorada no futuro, com mais estudos e maior experiência clínica.

Symptom assessment after nasal irrigation with xylitol in the postoperative period of endonasal endoscopic surgery / Avaliação dos sintomas após irrigação nasal com xilitol no período pós-operatório de cirurgias endoscópicas endonasais

Abstract Introduction: Chronic rhinosinusitis is an inflammatory condition of the nasal cavity and the paranasal sinuses that requires multifactorial treatment. Xylitol can be employed with nasal irrigation and can provide better control of the disease. Objective: To evaluate the association between the effects of nasal lavage with saline solution compared to nasal lavage with a xylitol solution. Methods: Fifty-two patients, divided into two groups (n = 26 in the "Xylitol" group and n = 26 in the "Saline solution" group) answered questionnaires validated in Portuguese (NOSE and SNOT-22) about their nasal symptoms and general symptoms, before and after endonasal endoscopic surgery and after a period of 30 days of nasal irrigation. Results: The "Xylitol" group showed significant improvement in pain relief and nasal symptom reduction after surgery and nasal irrigation with xylitol solution (p < 0.001). The "Saline solution" group also showed symptom improvement, but on a smaller scale. Conclusion: This study suggests that the xylitol solution can be useful in the postoperative period after endonasal endoscopic surgery, because it leads to a greater reduction in nasal symptoms.

Resumo Introdução: Rinossinusite crônica é um quadro de inflamação da cavidade nasal e dos seios paranasais que necessita de tratamento multifatorial. O xilitol pode ser associado às irrigações nasais e pode prover melhor controle da doença. Objetivo: Avaliar a relação entre os efeitos da lavagem nasal com solução fisiológica em comparação à lavagem nasal com solução de xilitol. Método: Divididos em dois grupos (n = 26 no grupo Xilitol e n = 26 no grupo Soro), 52 pacientes responderam à questionários validados em língua portuguesa (NOSE e SNOT-22) sobre seus sintomas nasais e sintomas gerais, antes e depois de cirurgia endoscópica endonasal e após um período de 30 dias de irrigação nasal. Resultados: O grupo Xilitol apresentou melhoria significativa dos sintomas de dor e sintomas nasais após a cirurgia e a irrigação nasal com solução de xilitol (p < 0,001). O grupo Soro também apresentou melhoria dos sintomas, porém em menor escala. Conclusão: Este estudo sugere que a solução de xilitol pode ser usada no período pós-operatório de cirurgia endoscópica endonasal por levar a uma maior redução nos sintomas nasais.

CD133, a Progenitor Cell Marker, is Reduced in Nasal Polyposis and Showed Significant Correlations with TGF-β1 and IL-8

Abstract Introduction Combination of chronic inflammation and an altered tissue remodeling process are involved in the development of Chronic Rhinosinusitis with Nasal Polyps (CRSwNP). Studies demonstrated that mesenchymal stem cells expressing the progenitor gene CD133 were involved in a significant reduction of the chronic inflammatory process in the polypoid tissue. Objective To evaluate the levels of CD133 (Prominin-1) in nasal polypoid tissue and its correlation with interleukin-8 (IL-8) and transforming growth factor β1 (TGF-β1). Methods A total of 74 subjects were divided in the following groups: control group (n = 35); chronic rhinosinusitis with nasal polyps nonpresenting comorbid asthma and aspirin intolerance (CRSwNPnonAI) group (n = 27); and chronic rhinosinusitis with nasal polyps presenting comorbid asthma and aspirin intolerance (CRSwNPAI) group (n = 12). Histologic analysis and also evaluation of the concentration of CD133, IL-8, and TGF-β1 by enzyme-linked immunosorbent assay (ELISA) kits were performed in nasal tissue obtained from nasal polypectomy or from middle turbinate tissue. Results Higher eosinophilic infiltration was found in both CRSwNP groups by histologic analysis. Lower levels of TGF-β1 and IL-8 were observed in both CRSwNP groups when compared with the control group, whereas the CD133 levels were significantly reduced only in the CRSwNPnonAI group compared with the control group. Conclusion It was demonstrated that the nasal mucosa presenting polyposis showed a significant reduction of CD133 levels, and also that this reduction was significantly correlated with the reduction of TGF-β1 levels, but not with IL-8 levels. Therefore, these findings may be involved in the altered inflammatory and remodeling processes observed in the nasal polyposis.

Eficácia e segurança do dupilumabe no tratamento da rinossinusite crônica com polipose nasal / Efficacy and safety of dupilumab in the treatment of chronic rhinosinusitis with nasal polyposis

A rinossinusite crônica (RSC) é uma síndrome caracterizada pela inflamação da mucosa nasal e dos seios paranasais por pelo menos 12 semanas, acometendo de 5% a 12% da população geral. A síndrome é associada a alta morbidade e considerada um grande problema de saúde pública devido a sua prevalência, seu custo para a sociedade e ao impacto que acarreta na qualidade de vida dos pacientes e em seu desempenho escolar ou profissional. Ademais, a RSC está associada a diversas comorbidades, como dermatite atópica, distúrbios respiratórios do sono, conjuntivite, otite média, asma e problemas emocionais. O dupilumabe é eficaz e seguro no tratamento da RSC com polipose nasal. A eficácia é progressiva no primeiro ano de tratamento, e a posologia de 300 mg a cada duas semanas é superior em relação à de cada quatro semanas. A interrupção do tratamento com 24 semanas acarreta a perda parcial de seus efeitos benéficos. O imunobiológico também é eficaz no controle da asma nos pacientes que apresentam essa doença como comorbidade. Alguns pacientes podem apesentar aumento transitório de eosinófilos sanguíneos, e 2,7% desenvolveram conjuntivite como reação adversa nos estudos SINUS-24 e SINUS-52. O dupilumabe é uma excelente opção terapêutica no tratamento concomitante de múltiplas doenças caracterizadas pela inflamação de tipo II.

Chronic rhinosinusitis (CRS) is a syndrome characterized by inflammation of the nasal mucosa and paranasal sinuses for at least 12 weeks, affecting 5% to 12% of the general population. The syndrome is associated with high morbidity and is considered a major public health problem because of its prevalence, its cost to society, and the impact it has on patients' quality of life and on their school or professional performance. Furthermore, CRS is associated with several comorbidities, such as atopic dermatitis, sleep-disordered breathing, conjunctivitis, otitis media, asthma, and emotional problems. Dupilumab is effective and safe in the treatment of CRS with nasal polyposis. Effectiveness is progressive in the first year of treatment, and a dosage of 300 mg every two weeks is more effective than that of every four weeks. Discontinuing treatment at 24 weeks results in partial loss of its beneficial effects. The biological drug is also effective in controlling asthma in patients who have this disease as a comorbidity. Some patients may experience a transient increase in blood eosinophils, and 2.7% developed conjunctivitis as an adverse reaction in the SINUS-24 and SINUS-52 studies. Dupilumab is an excellent therapeutic option in the concomitant treatment of multiple diseases characterized by type II inflammation.

Short-Term Effect of Modified Kaijie Huatantang on Chronic Rhinosinusitis with Nasal Polyp Due to Qi Stagnation Phlegm Syndrome / 中国实验方剂学杂志

Objective:To observe the short-term effect of modified Kaijie Huatantang on chronic rhinosinusitis with nasal polyp due to qi stagnation phlegm syndrome. Method:A total of 90 cases were divided into control group and observation group，with 45 cases in each group. The control group was given mometasone furoate，and the observation group was given modified Kaijie Huatantang after nasal endoscopy surgery for 4 weeks. After treatment and follow-up for 1 years，the sino-nasal outcome test-20（SNOT-20），Lund-Kennedy and traditional Chinese medicine（TCM） syndrome were observed. The serum and nasal secretions tumor necrosis factor-alpha（TNF-<italic>α</italic>），interleukin（IL）-1<italic>β</italic>，IL-8，IL-17，eosinophilic cationic protein（ECP） and immunoglobulin E（IgE） were detected before and after treatment. The safety，clinical efficacy after treatment and follow-up for 1 years were compared between two groups. Result:After treatment and follow-up for 1 years，the total control rates were 97.7%，93.0% in observation group， which were higher than 87.8%，75.6% in control group（<italic>P</italic><0.05）. Compared with the control group after treatment and follow-up for 1 years，SNOT-20，Lund-Kennedy and TCM syndrome scores in the observation group decreased in the same period（<italic>P</italic><0.05）. Compared with the control group after treatment，the serum and nasal secretions TNF-<italic>α</italic>，IL-1<italic>β</italic>，IL-8，IL-17，ECP and IgE in the observation group were significantly decreased（<italic>P</italic><0.05）. The incidence of postoperative complications was 2.3% in the observation group， which was lower than 17.1% in the control group（<italic>P</italic><0.05）. The incidence of adverse reactions was 4.7% in the observation group， which was lower than 41.5% in the control group（<italic>P</italic><0.05）. Conclusion:Modified Kaijie Huatantang can significantly improve the short-term clinical efficacy of patients with chronic rhinosinusitis and nasal polyp due to Qi stagnation phlegm obstruction，with a low incidence of adverse reactions.

Modified Jiegeng Yuansentang Combined with Conventional Therapy Improves Postoperative Mucosal Edema of Chronic Rhinosinusitis Patients with Nasal Polyps and Its Mechanism of Action / 中国实验方剂学杂志

Objective:To explore the curative effect and mechanism of modified Jiegeng Yuansentang combined with conventional therapy for postoperative mucosal edema in patients with cchronic rhinosinusitis with nasal polyps due to pulmonary Qi stagnation， and to explore its mechanism of action. Method:The 90 patients were randomly divided into control group and observation group， 45 cases in each group.All patients were given conventional therapy after nasal endoscopy.Patients in control group were also given mometasone furoate combined with clarithromycin， and patients in observation group were given modified Jiegeng Yuansentang for internal administration and local irrigation.The course of the treatment was 6 weeks.The sino nasal outcome test-20 （SNOT-20）， nasal situation Lund-Kennedy， rhinoconjunctivitis quality of life questionnaire （RQLQ）， traditional Chinese medicine （TCM） syndrome， serum and nasal secretions inflammatory cytokines ［tumor necrosis factor-alpha （TNF-<italic>α</italic>）， interleukin-1<italic>β</italic> （IL-1<italic>β</italic>）， interleukin-5 （IL-5），interleukin-17 （IL-17）］， serum protein ［aquaporin-1 （AQP-1）， aquaporin-3 （AQP-3）， aquaporin-5 （AQP-5）， fibronectin （Fn）］ were observed before and after treatment in two groups.The clinical symptoms， safety and recurrence after a follow-up of 12 months were compared between two groups. Result:The total effective rate was 97.73% （43/44） in observation group， which was higher than 80.95% （34/42） in control group （<italic>χ</italic>²=4.726， <italic>P</italic><0.05）.The patients were followed up for at least 12 months， and the recurrence rate was 4.65% （2/43） in observation group， which was lower than 32.35% （11/34） in control group （<italic>χ</italic>²=4.129， <italic>P</italic><0.05）.Compared with control group after treatment， the SNOT-20， Lund-Kennedy， RQLQ， TCM syndrome， TNF-<italic>α</italic>， IL-1<italic>β</italic>， IL-5， IL-17， AQP-5 were significantly decreased in observation group （<italic>P</italic><0.05）， while AQP-1， AQP-3， Fn were significantly increased in observation group （<italic>P</italic><0.05）.The incidence of adverse reactions was 2.27% （1/44） in observation group， lower than 57.14% （24/42） in control group （<italic>χ</italic>²=5.243， <italic>P</italic><0.05）. Conclusion:Modified Jiegeng Yuansentang can significantly improve postoperative mucosal edema in patients with chronic rhinosinusitis with nasal polyps due to pulmonary Qi stagnation， and the mechanism may be related to the regulation of inflammatory factors in serum and nasal secretions.

Micronucleus count in nasal epithelial cells from patients with chronic rhinosinusitis and polyps / Contagem de micronúcleos em células epiteliais nasais de pacientes com rinossinusite crônica e pólipos

Abstract Introduction: Chronic rhinosinusitis with nasal polyps, a prevalent disease affecting around 2% of the world population, is characterized by symptomatic inflammation of the nasal mucosa and impairment of quality of life. Chronic rhinosinusitis with nasal polyps has a multifactorial etiology, involving a dysfunctional host response to environmental factors. Thus, inflammatory models may be useful to shed light on the pathophysiology of this disease. Micronucleus count has been used to screen DNA damage in various tissues. Objective: To investigate the association between frequency of micronucleus in exfoliated cells from the nasal cavity of patients with chronic rhinosinusitis with nasal polyps and disease severity. Methods: This cross-sectional study included 21 patients with chronic rhinosinusitis with nasal polyps and 19 controls without disease. None of the participants were smokers. Results: Mean micronucleus count was 3.690 per 1000 cells (±2.165) in individuals with vs. 1.237 per 1000 cells (±0.806) in controls; (Student's t test = 4.653, p< 0.001). Nasal surgery in the past 5 years and aspirin-exacerbated respiratory disease were not associated with nicronucleus count (p= 0.251). Conclusion: Micronucleus count seems to be linked to chronic rhinosinusitis with nasal polyps, providing a new perspective for the evaluation of this disorder.

Resumo Introdução: A rinossinusite crônica com pólipos nasais, doença prevalente que afeta cerca de 2% da população mundial, é caracterizada por inflamação sintomática da mucosa nasal e comprometimento da qualidade de vida. A rinossinusite crônica com pólipos nasais tem etiologia multifatorial, envolvendo resposta disfuncional do hospedeiro a fatores ambientais. Assim, modelos inflamatórios podem ser úteis para esclarecer a fisiopatologia dessa doença. A contagem de micronúcleos tem sido usada para rastrear danos no DNA em vários tecidos. Objetivo: Investigar a associação entre a frequência de micronúcleos em células esfoliadas da cavidade nasal de pacientes com rinossinusite crônica com pólipos nasais e a gravidade da doença. Método: Estudo transversal que incluiu 21 pacientes com rinossinusite crônica com pólipos nasais e 19 controles sem doença. Nenhum dos participantes era fumante. Resultados: A contagem média de micronúcleos foi de 3,690 por 1.000 células (± 2,165) nos indivíduos doentes e 1,237 por 1.000 células (± 0,806) nos controles (teste t de Student = 4,653; p < 0,001). A cirurgia nasal nos últimos 5 anos e a doença respiratória exacerbada por aspirina não foram associadas à contagem de micronúcleos (p = 0,251). Conclusão: A contagem de micronúcleos parece estar ligada à rinossinusite crônica com pólipos nasais, proporcionando uma nova perspectiva para a avaliação dessa doença.

Upper Airway Findings and Markers of Lung Disease Progression in Patients with Cystic Fibrosis

Abstract Introduction Cystic fibrosis (CF) is a genetic disease that limits the quality of life mainly due to respiratory symptoms. The relationship between findings of the upper airways and CF lung disease is not yet completely understood. Objective The aim of the present study is to describe the most frequent nasal findings and pathogens in patients with CF and investigate the association between the findings of the upper respiratory tract and markers of lung disease progression. Methods Retrospective study in patients with CF from the Pediatric Pulmonology Department who underwent otorhinolaryngological evaluation between 2015 and 2017. Nasal endoscopy and nasal swab collection were part of the evaluation. The severity markers used were: percentage of predicted forced expiratory volume in the first second (FEV1%), body mass index (BMI) and the Shwachman-Kulczycki (SK) clinical score. Results A total of 48 patients with CF were included. The mean of the predicted percentage of FEV1% was 83.36 ± 30.04. The average 14 and SK score 89.11 ± 10.50. The bacteriology of the nasal swab was positive in 27 (54.1%) patients. Staphylococcus aureus was positive in 18 patients, Pseudomonas aeruginosa in 5, Pseudomonas cepacea in 3 and Stenotrophomonas maltophila in 1 patient. Nasal polyps were found in nine participants. Nasal polyps were found in nine participants and were associated with lower SK score. Conclusion The pathogens found in the upper airway were, in order: S. aureus, P. aeruginosa, P. cepacea e S. maltophila. The presence of polyps in the nasal cavity showed statistical significance and appears to have association with the prognostic factor measured by the SK score.

Eosinofilia periférica como factor de severidad tomográfica en rinosinusitis crónica / Peripheral eosinophilia as a factor of tomographic severity in chronic rhinosinusitis

Introducción: la rinosinusitis crónica (RSC) es una de las enfermedades más prevalentes a nivel mundial. Los eosinófilos desempeñan un papel importante en la generación del proceso inflamatorio nasosinusal crónico secundario a la generación de una respuesta maladaptativa Th2 y cambios en la microbiota nasal. El objetivo del estudio es determinar si la eosinofilia periférica puede usarse como factor predictor de severidad tomográfica en pacientes que cursan con rinosinusitis crónica. Métodos: se realizó un estudio observacional de corte transversal con componente analítico en pacientes con diagnóstico de RSC quienes dispusieran en su registro de historia clínica un hemograma con recuento de eosinófilos. El tamaño de la muestra fue de 74 individuos. Resultados: la eosinofilia periférica se estableció como factor de severidad tomográfica, ya que se encontró que por cada incremento de 100 eosinófilos en sangre, aumentaría en un punto el puntaje total de la escala tomográfica Lund-Mackay. Este patrón fue similar en pacientes con pólipos y asma, en los que se encontró un incremento en los puntajes totales de 4 y 5 puntos, respectivamente, con respecto a los pacientes que no presentan estas patologías. Conclusión: la utilización de la eosinofilia periférica como predictor de severidad podría ser de gran utilidad para la comunidad médica. Este biomarcador puede resultar en un ahorro potencial de costos al eliminar la necesidad de tratamientos médicos repetidos en pacientes que de entrada tienen un riesgo incrementado de enfermedad nasosinusal severa.

Introduction: chronic rhinosinusitis (CRS) is one of the most prevalent diseases worldwide. Eosinophils play an important role in the generation of a chronic nasosinusal inflammatory process secondary to the generation of a Th2 maladaptive response and changes in the nasal microbiota. The objective of the study is to determine if peripheral eosinophilia can be used as a predictor of tomographic severity in patients with chronic rhinosinusitis. Methods: an observational cross-sectional study with an analytical component was performed in patients with a diagnosis of CSR who had an eosinophil count in their clinical record. The sample size was 74 individuals. Results: peripheral eosinophilia was established as a tomographic severity factor, finding that for each increase of 100 eosinophils in blood, the total score of the Lund-Mackay tomographic scale would increase by 1 point. This pattern was equally concordant in patients with polyps and asthma, with increases in total scores of 4 and 5 points respectively, with respect to patients who do not present these pathologies. Conclusion: the uses of peripheral eosinophilia as a predictor of severity could be very useful for the medical community. This biomarker can result in potential cost savings by eliminating the need for repeated medical treatments in patients who initially have an increased risk of severe nasosinusal disease.

Fascin overexpression in nasal mucosa in patients with chronic rhinosinusitis with and without nasal polyps / Superexpressão de fascina na mucosa nasal em pacientes com rinossinusite crônica com e sem pólipos nasais

ABSTRACT Objective: The aim of our research is to assess fascin expression in nasal tissues of patients with chronic rhinosinusitis with (CRSwNP) and without (CRSsNP) nasal polyps. Methods: Fascin expression in nasal tissues of 11 CRSwNP patients and 10 CRSsNP patients was immunohistochemically evaluated and compared with control subjects. Results: Fascin was found to be strongly expressed in epithelial cells in polyps in CRSwNP and nasal tissue in CRSsNP. Its strong expression was observed both in lamina propria and nasal epithelial cells in CRSsNP. Fascin overexpression in nasal mucosa in CRSwNP was more pronounced compared with CRSsNP. In addition, proliferating epithelial cells in polyp tissue were weakly immunostained, whereas mature cells expressed much more fascin. Conclusion: CRSwNP and CRSsNP are associated with fascin overexpression, which makes fascin a promising target for therapeutic interventions.

RESUMEN Objetivo: El objetivo de esta investigación fue evaluar la expresión de fascina en los tejidos nasales de pacientes con rinosinusitis crónica con (RSCcPN) y sin pólipos nasales (RSCsPN). Métodos: La expresión de fascina en los tejidos nasales de 11 pacientes con RSCcPN y 10 pacientes con RSCsPN fue analizada por inmunohistoquímica y comparada con los individuos control. Resultados: Fascina fue encontrada por ser fuertemente expresada en células epiteliales de pólipos en la RSCcPN y en tejido nasal en la RSCsPN. Su fuerte expresión fue observada tanto en la lámina propia como en las células epiteliales nasales en la RSCsPN. La sobreexpresión de fascina en la mucosa nasal en la RSCcPN fue más pronunciada en comparación con la RSCsPN. Además, las células epiteliales proliferantes en el tejido del pólipo fueron inmunoteñidas débilmente, mientras las células maduras expresaron mucho más fascina. Conclusión: RSCcPN y RSCsPN están asociadas a la sobreexpresión de fascina, lo que hace la fascina un objetivo prometedor para intervenciones terapéuticas.

RESUMO Objetivo: O objetivo desta pesquisa foi avaliar a expressão de fascina nos tecidos nasais de pacientes com rinossinusite crônica com (RSCcPN) e sem (RSCsPN) pólipos nasais. Métodos: A expressão de fascina nos tecidos nasais de 11 pacientes com RSCcPN e 10 pacientes com RSCsPN foi avaliada imuno-histoquimicamente e comparada com os indivíduos-controle. Resultados: Fascina foi encontrada por ser fortemente expressa em células epiteliais em pólipos na RSCcPN e em tecido nasal na RSCsPN. Sua forte expressão foi observada tanto na lâmina própria quanto nas células epiteliais nasais na RSCsPN. A superexpressão de fascina na mucosa nasal na RSCcPN foi mais pronunciada em comparação com a RSCsPN. Além disso, as células epiteliais em proliferação no tecido do pólipo foram imunocoradas fracamente, enquanto as células maduras expressaram muito mais fascina. Conclusão: RSCcPN e RSCsPN estão associadas à superexpressão de fascina, o que torna a fascina um alvo promissor para intervenções terapêuticas.

Differential diagnosis of mass-like polyps and tumors in nasal cavity and paranasal sinus with quantitative parameters of dual-energy CT iodine map / 中国医学影像技术

Objective: To explore the value of quantitative parameters of dual-energy CT arterial iodine map for differentiating nasal and paranasal sinus mass-like polyps from tumors. Methods: Dual-energy CT data of 80 patients with nasal sinus masses confirmed by surgical pathology were retrospectively analyzed. According to pathological results, the patients were divided into polyp group (n=26), benign tumor group (n=24) and malignant tumor group (n=30). Arterial phase iodine concentration (IC), normalized iodine concentration (NIC) and iodine map CT value (Overlay value) of lesions were measured, calculated and compared among 3 groups. Then patients in benign tumor group and malignant tumor group were combined into tumor group (n=54). ROC curves of each quantitative parameters of arterial phase iodine map for differentiating nasal and paranasal mass polyps and tumors were drawn, and the relative diagnostic efficacy were evaluated. Results: The arterial phase IC, NIC and Overlay value of benign tumor group (H=-4.13, -2.80, -4.00) and malignant tumor group (H=-7.02, -5.75, -6.12) were all higher than those of polyp group (all P<0.05). The arterial phase IC and NIC in malignant tumor group were higher than those in benign tumor group (H=-2.60, -2.73, both P<0.05), while Overlay value showed no statistical difference between benign and malignant tumor groups (H=-1.85, P=0.20). AUC of arterial phase IC (0.95) for differentiating nasal and paranasal mass polyps and tumors was larger than that of NIC (0.85) and Overlay value (0.91). Taken 1.15 mg/ml as the diagnostic threshold, the diagnostic sensitivity, specificity and Youden index was 81.50%, 96.20% and 78.00%, respectively. Conclusion: Arterial phase iodine-related quantitative parameters of dual-energy CT have certain application value in differential diagnosis of nasal and paranasal sinus mass-like polyps and tumors.