Prevalence of allergic rhinitis among adults in urban and rural areas of china: a population-based cross-sectional survey

A Crystal Clear Picture of Age and Gender Specific Incidence of Severe Persistent Allergic Rhinitis and Triggers of Allergic Rhinitis in Central India

The prevalence of allergic rhinitis (AR) is associated with various environmental allergens, and the. Level of exposure occurs through inhalation or ingestion. It is clear from several studies and guidelines that screening and identifying various allergens in a particular region can facilitate in diagnosing, treating, and formulating preventive strategies against AR. To study the incidence of severe persistent allergic rhinitis across different age groups and genders, and to identify the allergens responsible for triggering this condition in Central India. The study included 2097 patients of either sex, aged 5 to 70 years suffering from severe persistent allergic rhinitis from January 2003 to Dec 2023. Selection of study group was as per ARIA classification. Modified Skin Prick Test was performed according to the method of Pepys and Bernstein. Study indicates that in Central India, the common allergens responsible for causing severe persistent allergic rhinitis are pre dominantly aero allergens (86%) and food allergens (14%). The three most common aero allergens are house dust mite (D. farinae) (47.97%), housefly (26.23%), and mosquito (25.99%). Among pollens, the most common are Ricinus communis (10.01%), Prosopis juliflora (8.30%), and Gynandropis gynandra (7.15%). Among food allergens, the most common are baker's yeast (2.48%), almond (1.67%), and milk (1.62%). The findings of the study were highly beneficial for counseling on avoidance therapy and making decisions about allergen - specific immunotherapy, which is currently the standard treatment protocol to alter the natural progression of allergic rhinitis.

Immunocytes do not mediate food intake and the causal relationship with allergic rhinitis: a comprehensive Mendelian randomization

Background

Observational studies indicate a correlation between food intake and allergic rhinitis. The potential interplay between the immune system and allergic rhinitis might contribute causally to both food intake and allergic rhinitis, providing promising therapeutic avenues. However, elucidating the causal relationship and immune-mediated mechanisms between food intake and allergic rhinitis remains a pending task.

Methods

We utilized a two-sample Mendelian randomization (MR) methodology to explore the causal relationship between food intake and allergic rhinitis. Furthermore, we investigated the potential causal relationship of immune cell signals with allergic rhinitis, as well as the potential causal relationship between food intake and immune cell signals. Moreover, employing both two-step Mendelian randomization and multivariable Mendelian randomization, we delved into the mediating role of immune cell signals in the causal relationship between food intake and allergic rhinitis. Leveraging publicly accessible genetic datasets, our analysis encompassed 903 traits, comprising 171 food intake features, 731 immune cell features, and one trait related to allergic rhinitis.

Result

We found causal relationships between seven types of food intake and allergic rhinitis, as well as between 30 immune cell phenotypes and allergic rhinitis. Furthermore, our two-step Mendelian randomization analysis and multivariable Mendelian randomization analysis indicate that immune cells do not mediate the causal relationship between food intake and allergic rhinitis.

Conclusion

To the best of our knowledge, we are the first to incorporate a large-scale dataset integrating immune cell features, food intake features, and allergic rhinitis into Mendelian randomization analysis. Our research findings indicate that there are causal relationships between six types of food intake and allergic rhinitis, as well as between 30 immune cell phenotypes and allergic rhinitis. Additionally, immune cells do not mediate these relationships.

The association between the dietary inflammatory index and allergic rhinitis: a case-control study

Background and objective

Allergic rhinitis (AR) is a common chronic inflammatory disease that significantly impacts the quality of life of patients. However, there is limited research on the relationship between the Dietary Inflammatory Index (DII) and the risk of AR. Our study aimed to assess the association between DII and AR in a sample of adults from North China.

Methods

In a case-control study, we selected 166 cases of AR and 166 age- and gender-matched controls. Dietary intake was assessed using a validated food frequency questionnaire. The energy-adjusted DII (E-DII) scores were calculated based on the quantity of diet components with inflammatory or anti-inflammatory potential. We used conditional logistic regression models to examine the association between E-DII and AR.

Results

Our findings indicate a positive correlation between E-DII and AR risk. After controlling for confounders, individuals in the highest E-DII tertile exhibited a 4.41-fold increased risk of AR compared to those in the lowest tertile (OR 4.41, 95% CI 2.31-8.41). Additionally, stratified analysis showed that E-DII was positively associated with AR subtype (seasonal vs. perennial), duration (≤6 years vs. >6 years), severity (mild vs. moderate-severe), and onset time (intermittent vs. persistent). Furthermore, individuals in the highest E-DII tertile had higher intake of total fat, SFA, PUFAs, and n-6 PUFAs.

Conclusion

In conclusion, we realized that there is a positive association between the E-DII score and AR. The consumption of diets abundant in anti-inflammatory nutrients and low in pro-inflammatory nutrient contents is recommended as a preventative strategy against AR.

Artificial intelligence applications in allergic rhinitis diagnosis: Focus on ensemble learning

Background

The diagnosis of allergic rhinitis (AR) primarily relies on symptoms and laboratory examinations. Due to limitations in outpatient settings, certain tests such as nasal provocation tests and nasal secretion smear examinations are not routinely conducted. Although there are clear diagnostic criteria, an accurate diagnosis still requires the expertise of an experienced doctor, considering the patient's medical history and conducting examinations. However, differences in physician knowledge and limitations of examination methods can result in variations in diagnosis.

Objective

Artificial intelligence is a significant outcome of the rapid advancement in computer technology today. This study aims to present an intelligent diagnosis and detection method based on ensemble learning for AR.

Method

We conducted a study on AR cases and 7 other diseases exhibiting similar symptoms, including rhinosinusitis, chronic rhinitis, upper respiratory tract infection, etc. Clinical data, encompassing medical history, clinical symptoms, allergen detection, and imaging, was collected. To develop an effective classifier, multiple models were employed to train on the same batch of data. By utilizing ensemble learning algorithms, we obtained the final ensemble classifier known as adaptive random forest-out of bag-easy ensemble (ARF-OOBEE). In order to perform comparative experiments, we selected 5 commonly used machine learning classification algorithms: Naive Bayes, support vector machine, logistic regression, multilayer perceptron, deep forest (GC Forest), and extreme gradient boosting (XGBoost).To evaluate the prediction performance of AR samples, various parameters such as precision, sensitivity, specificity, G-mean, F1-score, and area under the curve (AUC) of the receiver operating characteristic curve were jointly employed as evaluation indicators.

Results

We compared 7 classification models, including probability models, tree models, linear models, ensemble models, and neural network models. The ensemble classification algorithms, namely ARF-OOBEE and GC Forest, outperformed the other algorithms in terms of the comprehensive classification evaluation index. The accuracy of G-mean and AUC parameters improved by nearly 2% when compared to the other algorithms. Moreover, these ensemble classifiers exhibited excellent performance in handling large-scale data and unbalanced samples.

Conclusion

The ARF-OOBEE ensemble learning model demonstrates strong generalization performance and comprehensive classification abilities, making it suitable for effective application in auxiliary AR diagnosis.

The Role of Diet and Nutrition in Allergic Diseases

Allergic diseases are a set of chronic inflammatory disorders of lung, skin, and nose epithelium characterized by aberrant IgE and Th2 cytokine-mediated immune responses to exposed allergens. The prevalence of allergic diseases, including asthma, allergic rhinitis, and atopic dermatitis, has increased dramatically worldwide in the past several decades. Evidence suggests that diet and nutrition play a key role in the development and severity of allergic diseases. Dietary components can differentially regulate allergic inflammation pathways through host and gut microbiota-derived metabolites, therefore influencing allergy outcomes in positive or negative ways. A broad range of nutrients and dietary components (vitamins A, D, and E, minerals Zn, Iron, and Se, dietary fiber, fatty acids, and phytochemicals) are found to be effective in the prevention or treatment of allergic diseases through the suppression of type 2 inflammation. This paper aims to review recent advances in the role of diet and nutrition in the etiology of allergies, nutritional regulation of allergic inflammation, and clinical findings about nutrient supplementation in treating allergic diseases. The current literature suggests the potential efficacy of plant-based diets in reducing allergic symptoms. Further clinical trials are warranted to examine the potential beneficial effects of plant-based diets and anti-allergic nutrients in the prevention and management of allergic diseases.

Intra-cervical lymphatic immunotherapy for dust mite-induced allergic rhinoconjunctivitis in children: a 3-year prospective randomized controlled trial

Background

Pediatric allergic rhinoconjunctivitis has become a public concern with an increasing incidence year by year. Conventional subcutaneous immunotherapy (SCIT) has long treatment time, high cost and poor compliance. The novel immunotherapy significantly shortens the course of treatment by directly injecting allergens into cervical lymph nodes, which can perform faster clinical benefits to children.

Objective

By comparing with SCIT, this study aimed to evaluate the long-term efficacy and safety of intra-cervical lymphatic immunotherapy (ICLIT).

Methods

This is a prospective randomized controlled study. A total of 50 allergic rhinoconjunctivitis children with dust mite allergy was randomly divided into ICLIT group and SCIT group, receiving three cervical intralymphatic injections of dust mite allergen or three years of subcutaneous injection, separately. Primary outcomes included total nasal symptom scores (TNSS), total ocular symptom scores (TOSS), total symptom scores (TSS), total medication scores (TMS), and total quality of life score. Secondary outcomes included pain perception and adverse reactions during treatment. Other secondary outcome was change in Dermatophagoides pteronyssinus (Derp) and Dermatophagoides farina (Derf) -specific IgE level.

Results

Both groups had significantly decreased TNSS, TOSS, TSS, TMS, and total quality of life score after 36 months of treatment (p<0.0001). Compared with SCIT, ICLIT could rapidly improve allergic symptoms (p<0.0001). The short-term efficacy was consistent between the two groups (p=0.07), while the long-term efficacy was better in SCIT group (p<0.0001). The pain perception in ICLIT group was lower than that in SCIT group (p<0.0001). ICLIT group was safer. Specifically, the children had only 3 mild local adverse reactions without systemic adverse reactions. The SCIT group had 14 systemic adverse reactions. At last, the serum Derp and Derf-specific IgE levels in ICLIT and SCIT groups decreased 3 years later (p<0.0001).

Conclusion

ICLIT could ameliorate significantly the allergic symptoms in pediatric patients with an advantage in effectiveness and safety, besides an improved life quality including shortened period of treatment, frequency of drug use and pain perception.

Clinical trial registration

https://www.chictr.org.cn/, identifier ChiCTR1800017130.

Prevalence and risk factors of allergic rhinitis among Chinese adults: A nationwide representative cross-sectional study

Background

The prevalence of allergic rhinitis (AR) has been increasing steadily worldwide, especially in countries with increasing industrialization such as China. However, available evidence regarding AR prevalence among Chinese adults is scarce and limited to regional data collected in earlier years. We therefore aimed to provide a more recent and robust estimate of AR prevalence using a nationwide representative cross-sectional study in China.

Methods

Data of 184 326 participants aged 18 years or older were obtained from the China Chronic Disease and Risk Factor Surveillance conducted in 2018-2019. AR was determined by self-reported sneezing, nasal itching, obstruction, or rhinorrhea symptoms for at least 1 h in the absence of a cold or flu within the last 12 months. Multivariable logistic model was used to examine the risk factors of AR, and a possible non-linear relationship was further tested by restricted cubic spline. Potential additive interactions of risk factors with sex, residence, and geographic region were assessed by relative excess risk due to interaction (RERI).

Results

The weighted prevalence of AR was 8.1% (95% confidence interval [CI], 7.4%-8.7%), of whom 23.7% (95% CI, 21.3%-26.0%) were aware of their diagnosis. Increased odds of AR were associated with younger age, men, living in urban area or north region, more education, smoking, underweight, and higher income. Despite the nonsignificant linear trend, the spline regression demonstrated a non-linear association between AR and sleep duration, with higher odds at both ends. Additionally, the observed associations were generally stronger among men and people living in urban area and north region, with significant RERI ranging from 0.07 (95% CI, 0.00-0.14) to 0.40 (95% CI, 0.12-0.67).

Conclusions

AR is prevalent in China and the associated factors and interactions are helpful to design targeted preventive strategies towards certain subpopulations. The low awareness of AR calls for a national effort on AR screening.

Allergic rhinitis in India

India is the home of nearly 20% of the global population with 1.35 billion people. Of all non-communicable diseases, allergic diseases such as allergic rhinitis (AR) and asthma appear to have increased in India over the past decades. Approximately 22% of adolescents currently suffer from AR in India. However, owing to the lack of adequate epidemiological studies in India, particularly in rural and suburban areas, this number may misrepresent the true burden of this disease. While the risk factors for AR are mainly environmental exposures or genetic factors, several new environmental, social, and behavioural risk factors such as the presence of dumpsters near residences, movement of vehicles near homes, and exposure to artificial light at night have been found to be associated with AR. However, despite international guidelines, the diagnosis and management of AR in India are often suboptimal, for multiple reasons such as the lack of specialized training in allergy and immunology among Indian clinicians, the lack of diagnostic facilities, and the high cost of medications. This review aims at highlighting the current scenario of AR in India and how it differs from the rest of the world. It also highlights the need for developing a strategic approach to enhance the quality of care for allergic diseases by upgrading education and training for healthcare professionals, creating awareness among clinicians and patients, and involving stakeholders and policymakers in making treatments accessible and affordable to patients.

[Clinical observation of highly selective vidian neurectomy guided by the palatovaginal canal]

Objective:Summarize the safety and feasibility of highly selective vidian neurectomy guided by the palatovaginal canal. Methods:Hypothermal plasma surgery was performed on 53 patients with perennial allergic rhinitis （PAR）. Remove the soft tissue covering the anterior wall of the sphenoid process of palatine bone using the Coblation system. Find the palatovaginal canal and cut off the neurovascular bundle in the palatovaginal canal. Expose the anterior orifice of the vidian canal and cut off the vidian nerve. Results:53 PAR patients have conducted the novel vidian neurectomy without sphenopalatine artery trunk damage. No secondary hemorrhage and hard palate numbness happened. The symptoms of nasal obstruction, sneeze, nasal discharge, and rhinocnesmus were relieved significantly. Conclusion:The simple and safe approach of highly selective vidian neurectomy guided by the palatovaginal canal provides an alternative surgical option for clinicians.

Prevalence and Risk Factors for Allergic Rhinitis in China: A Systematic Review and Meta-Analysis

The prevalence of allergic rhinitis (AR) has increased tremendously in the recent year in China. Evidence-based medicine to objectively evaluate the prevalence and risk factors for AR in China is urgently required. Toward this, we systematically searched four English and four Chinese databases to identify the literature on the same, from the year of website establishment until November 2021. A total of 51 studies were evaluated, and data were obtained through Stata 16 analysis. Overall pooled risk factors for adult AR were smoking (odds ratio [OR] = 1.89, 95% confidence interval [CI]: 1.25, 2.87), asthma (OR = 3.30, 95% CI: 1.48, 7.39), a family history of AR (OR = 3.17, 95% CI: 2.31, 4.34), a family history of asthma (OR = 3.99, 95% CI: 2.58, 6.16), drug allergy (OR = 1.62, 95% CI: 1.38, 1.89), food allergy (OR = 2.29, 95% CI: 1.39, 3.78), pollen allergy history (OR = 2.41, 95% CI: 1.67, 3.46), antibiotic use (OR = 2.08, 95% CI: 1.28, 3.36), occupational dust exposure (OR = 2.05, 95% CI: 1.70, 2.47), home renovation (OR = 1.73, 95% CI: 0.99, 3.02), and middle school education (OR = 1.99, 95% CI: 1.29, 3.06). Overall pooled risk factors for AR in children were passive smoking (OR = 1.70, 95% CI: 1.02, 2.82), asthma (OR = 3.26, 95% CI: 2.42, 4.39), a family history of AR (OR = 2.59, 95% CI: 2.07, 3.24), a family history of allergy (OR = 4.84, 95% CI: 3.22, 7.26), a history of allergic diseases (OR = 2.11, 95% CI: 1.52, 2.94), eczema(OR = 2.29, 95% CI: 1.36, 3.85), owning pets (OR = 1.56, 95% CI: 1.37, 1.77), eating seafood (OR = 1.30, 95% CI: 1.10, 1.55), boys (OR = 1.58, 95% CI: 1.43, 1.74), and breastfeeding (OR = 0.82, 95% CI: 0.55, 1.22). The results of our meta-analysis showed that the prevalence of allergy rhinitis was 19% (95% CI 14–25) among adults and 22% (95% CI 17–27) among children, with boys showing a higher prevalence than girls. The development of AR in China is associated with several factors, including allergic diseases (eczema, asthma, pollen allergy, and food allergy), a family history of allergy (AR, asthma, and other allergies), and dwelling and working environment (smoking or passive smoking, occupational dust exposure, and owning pets); conversely, breastfeeding can reduce the risk.

Synergistic effect of Korean red ginseng extract and GABA mixture on the IgE production in mice via Th1/Th2 cell balance

It has been recently reported that the immune system has been linked to the nervous system. This study was conducted to investigate the effect of administration of two components, gamma-aminobutyric acid (GABA) and Panax ginseng Meyer (GIN), on the production of IgE and Th1-Th2 dominant cytokines. Antibody and inflammatory mediator levels in serum, and the cytokines secreted to spleen cells of ovalbumin (OVA) immunized mice were analyzed. The group of GABA and GIN mixture significantly reduced IgE level and dramatically increased OVA-IgG2a antibody production. In addition, rising effect on IFN-gamma and GM-CSF levels related to Th1 cytokine was observed only in the group of GABA + GIN. The mixture alleviated allergic symptoms by reducing the level of histamine and prostaglandin. These studies suggest that GIN + GABA administration in the allergen-induced mouse model may regulate the Th1-Th2 balance by strongly acting on the immune response associated with Th1.

Prevalence and risk factors of allergic rhinitis and asthma in the southern edge of the plateau grassland region of northern China: A cross-sectional study

Background

The prevalence rates of allergic rhinitis (AR) and asthma in the border region of China may be different from those in the central region of plateau grasslands. A survey was performed to investigate the prevalence and risk factors for AR, asthma, and AR combined with asthma among adults (age ≥ 20 years) residing in the southern border of plateau grasslands in northern China.

Methods

From May to August 2018, a cross-sectional survey was completed by subjects that were selected using a cluster random sampling method. The subjects completed a questionnaire and were administered skin prick tests (SPTs). Risk factors for AR, asthma, and AR combined with asthma were examined by multivariate logistic regression analyses.

Results

A total of 1815 adult subjects in the selected region completed study. The prevalence rates of physician-diagnosed AR, asthma, and AR combined with asthma were 13.9% (253), 9.8% (177), and 2.9% (52), respectively. Among the patients with AR, 20.6% were found to have concurrent asthma; among the patients with asthma, 29.4% were found to have concurrent AR. Artemisia and Humulus pollen were the most common sensitizing pollen types. Approximately 70% of subjects with AR and <30% of asthma patients were sensitized to Artemisia and Humulus pollen. Symptoms of AR and asthma mainly appeared during August. A multivariable logistic regression analysis identified sensitization pollen as an independent risk factor for both AR and AR combined with asthma (AR: OR = 16.23, 95% CI: 10.15–25.96; AR combined with asthma: OR = 6.16, 95% CI: 1.28–29.66). An age >40 years old, family history of asthma, moderate-to-severe AR, adverse food reactions, and mold allergies were independent risk factors for AR combined with asthma.

Conclusions

This study identified the prevalence rates of AR and asthma in the southern borders of the plateau grassland in northern China (>1500 m above sea level). Sensitization pollen is an independent risk factor for AR and AR combined with asthma.

A nationwide survey of otolaryngologists' compliance with Chinese guidelines for diagnosis and treatment of allergic rhinitis

Background

A higher compliance with clinical guidelines helps improve treatment outcomes. But the clinical practice of otolaryngologists is not always consistent with guidelines.

Objective

To describe otolaryngologists’ compliance with guidelines about allergic rhinitis (AR) management and identify factors responsible for the discordance between clinical practice and guideline recommendations in China.

Methods

A cross-sectional nationwide survey was designed and conducted via an online platform. Recruitment was done by emailing otolaryngologists registered in the Chinese Society of Otorhinolaryngology-Head and Neck Surgery or by inviting otolaryngologists to scan a Quick Respond (QR) code that linked to the questionnaire at various academic meetings.

Results

A total of 2142 otolaryngologists were eligible and completed the survey. Of them, 64.7% had over 10 years work experience and 97.4% had a bachelor's degree or higher. About 18.3% of the participants strictly copied the guideline in clinical practice, while 73.7% used the guideline that had been adjusted according to their clinical experience. Otolaryngologists were most concerned about the efficacy, safety, and minimum age of AR medications, and least concerned about patient preferences. Regarding the use of intranasal steroids (INS), leukotriene receptor antagonists (LTRA), and H1-antihistamines, 86.8%, 55.7% and 51.2% of otolaryngologists complied with the guideline recommendations, respectively. Educational background was a factor affecting the compliance with guidelines and acceptance of INS.

Conclusion

A vast majority of Chinese otolaryngologists complied with the current Chinese AR guidelines. A difference still existed between the otolaryngologists' real-world and guideline-recommended management. The otolaryngologists should pay more attention to patient preferences. A higher education could improve otolaryngologists’ adherence to the guidelines.

Turkish Guideline for Diagnosis and Treatment of Allergic Rhinitis (ART)

OBJECT

To prepare a national guideline for Otorhinolaryngologist who treat allergic rhinitis patients.

METHODS

The study was conducted by three authors, namely the writing support team. The support team made the study plan, determined the writing instructions, chose the subgroups including the advisory committee, the advisors for authors and the authors. A workshop was organized at the very beginning to explain the details of the study to the team. Advisors took the chance to meet their coworkers in their subgroups and determined the main headings and subheadings of the guideline, together with the authors. After key words were determined by the authors, literature search was done in various databases. The authors keep in touch with the advisors and the advisors with the advisory committee and the support group at every stage of the study. National and International published articles as well as the abstracts of unpublished studies, imperatively presented in National Congresses, were included in this guideline. Only Guideline and meta-analyses published in last seven years (2013-2017) and randomized controlled studies published in last two years (2015-2017) were included. After all work was completed by the subgroups, support team brought all work together and edited the article.

RESULTS

A detailed guideline about all aspects of allergic rhinitis was created.

CONCLUSION

The authors believe that this guideline will enable a compact and up-to-date information on allergic rhinitis to healthcare professionals. This guideline is the first in the field of Otolaryngology in Turkey. It should be updated at regular intervals.

Effectiveness and safety of different traditional Chinese medicine therapies for allergic rhinitis: A protocol for systematic review and network meta analysis

INTRODUCTION

Traditional Chinese medicine has been widely used in the treatment of allergic rhinitis. However, currently randomized controlled trials (RCTs) and meta-analysis only compare 1 or 2 types of traditional Chinese medicine therapies, and the comprehensive ranking of efficacy and safety of multiple traditional Chinese medicine therapies for the treatment of allergic rhinitis has not been completed. Therefore, the purpose of this network meta-analysis is to evaluate the efficacy and safety of different traditional Chinese medicine therapies for the treatment of allergic rhinitis.

METHODS AND ANALYSIS

Three English databases of PubMed, Embase, Cochrane Library, and 2 Chinese databases of CNKI and Wanfang were searched from their inceptions to September 1, 2020. At the same time, in order to prevent omissions, we also compared the previous meta-analysis to determine the final included trials. The main evaluation outcome was the total Clinical Score (total nasal symptom score [TNSS]), the secondary evaluation outcome was the Rhinoconjunctivitis Quality of Life Questionnaire (RQLQ) and adverse events. The Cochrane Collaboration's Tool was used to evaluate the methodological quality of articles, the Grading of Recommendations Assessment, Development and Evaluation (GRADE) instrument was used to evaluate the quality of evidence. Network meta-analysis was completed by using Stata Statistical Software (Version 14.0, Stata Corporation, College Station, TX).

RESULTS

This study will compare and rank the different traditional Chinese medicine therapies for allergic rhinitis.

CONCLUSION

This study is the first time to use network meta-analysis (NMA) to compare the efficacy and safety of traditional Chinese medicine for the treatment of allergic rhinitis, which will provide ideas and methods for the clinical treatment for allergic rhinitis.

INPLASY REGISTRATION NUMBER

No. INPLASY202080119.

The effectiveness of thunder fire moxibustion for treating allergic rhinitis: A protocol for systematic review and meta analysis

BACKGROUND

Allergic rhinitis (AR) is a chronic disease, resulting in severe syndromes such as sneezing, itching, nasal blockage, and rhinorrhea. The major medications treating AR cause side effects, while thunder fire moxibustion (TFM) is known as a safe and effective treatment for AR. Thus, this systematic review and meta analysis aims to systematically evaluate the effectiveness and safety of TFM in the treatment of AR.

METHODS

Nine databases, including Medline, PubMed, Web of Science, Embase, the Cochrane Library, China National Knowledge Infrastructure Database (CNKI), WanFang Database (WF), Chinese Scientific Journal Database (VIP), and Chinese Biomedical Literature Database (CBM) from inception to July 2020 will be searched. In addition, the grey literature and the references of all included literature will be retrieved manually. Reviewers will identify studies, extract data and assess the quality independently. The outcomes of interest include: total nasal symptom score, total non-nasal symptom score, rhinitis quality of life questionnaire, visual analog scale, Laboratory indicators: serum immunoglobulin E, immunoglobulin A, or immunoglobulin G level and adverse events. Randomized clinical trials will be collected, methodological quality will be evaluated using the Cochrane risk-of-bias assessment tool, and the level of evidence will be rated using the Grading of Recommendations, Assessment, Development and Evaluation (GRADE) approach. Meta-analysis will be performed using RevMan5.3.0 software.

RESULTS

Because the review is ongoing, no results can be reported.

CONCLUSIONS

The findings from this review will provide reliable evidence for effectiveness and safety of TFM for AR.

ETHICS AND DISSEMINATION

Ethical approval requirements are not necessary for this review. This systematic review and meta analysis will be disseminated online and on paper to help guide the clinical practice better.

PROSPERO REGISTRATION NUMBER

CRD42019141113.

The effectiveness and safety of acupuncture for allergic rhinitis: Protocol for an overview of systematic reviews and meta-analyses

BACKGROUND

Allergic rhinitis (AR) is one of the most common allergic disorders globally. Several systematic reviews and meta-analyses have reported the effectiveness of acupuncture for patients with AR. However, the evidence has not been systematically synthesized. This overview aims to map, synthesize, and assess the reliability of evidence generated from these systematic reviews (SRs) and meta-analyses of acupuncture for AR.

METHODS

A Comprehensive literature search will be conducted through the PubMed, Embase, the Cochrane Library of Systematic Reviews, the China National Knowledge Infrastructure Database, Wanfang Database, Chinese Biomedical Literature Database, and Chinese Scientific Journal Database from inception until January 2020. Additionally, the PROSPERO database and the reference list of included studies will be searched for unpublished, ongoing, or recently completed SRs and meta-analyses. The reviewers will identify reviews independently and extract data according to the methodological guidelines for overviews provided by the Cochrane Collaboration. The risk of bias will be assessed based on the Risk of Bias in Systematic Reviews. The methodological and reporting quality of the included reviews will be assessed using the Assessing the Methodological Quality of Systematic Reviews (V.2) tool and the Preferred Reporting Items for Systematic Review and Meta-Analyses statement. The outcomes of interest include total nasal symptom score, rhinoconjunctivitis quality-of-life questionnaire, immunoglobulin E, visual analog scale, laboratory examination, and side effects. The quality of evidence of outcomes will be evaluated using the Grading of Recommendations Assessment, Development and Evaluation. The evidence will be synthesized where appropriate based on patient subgroups and outcomes.

ETHICS AND DISSEMINATION

Ethical approval is not required for overviews. We plan to publish results in peer-reviewed journals and present at international and national academic, clinical, and patient conferences.

RESULTS

The results will be published in a peer-reviewed journal.

CONCLUSION

This overview will provide comprehensive evidence of acupuncture for patients with AR.

PROSPERO REGISTRATION NUMBER

CRD42019140756.

Effectiveness and safety of indirect moxibustion for the treatment of allergic rhinitis: A protocol for systematic review and meta-analysis of RCTs

BACKGROUND

Allergic rhinitis (AR) is a common allergic disorder worldwide. Western medicine is not optimistic about the therapeutic effect of this disease. However, moxibustion can enhance vital energy or immunity through a great number of clinical trials. Thus, the aim of this systematic review and meta-analysis is to systematically evaluate the effectiveness and safety of indirect moxibustion for treating AR.

METHODS

We will conduct a comprehensive literature search in Medline, PubMed, Web of Science, Embase, the Cochrane Library, China National Knowledge Infrastructure Database, WanFang Database, Chinese Scientific Journal Database, and Chinese Biomedical Literature Database from inception to August 2020 without any language restriction. In addition, we will retrieve the unpublished studies and the references of initially included literature manually. Reviewers will identify studies, extract data, and assess the quality independently. The outcomes of interest include: total effective rate, total nasal symptom score, total non-nasal symptom score, rhinitis quality of life questionnaire, visual analog scale, laboratory indicators (i.e., serum levels of IgE, IgA, or IgG), and adverse events. Randomized clinical trials will be collected, methodological quality will be evaluated using the Cochrane risk-of-bias assessment tool, and the level of evidence will be rated using the Grading of Recommendations, Assessment, Development and Evaluation approach. Meta-analysis will be performed using RevMan 5.3.0 software. The heterogeneity test will be conducted between the studies, and P < .1 and I > 50% are the thresholds for the tests. We will utilize the fixed effects model or the random effects model according to the size of heterogeneity.

RESULTS

Because the review is ongoing, no results can be reported.

CONCLUSIONS

The results of this review will provide reliable evidence for effectiveness and safety of indirect moxibustion for treating AR.

ETHICS AND DISSEMINATION

Ethical approval is not required for this study. This systematic review and meta-analysis will be disseminated online and on paper to help guide clinicians.

PROSPERO REGISTRATION NUMBER

CRD42019140944.

Heat-sensitive moxibustion for anaphylactic rhinitis: A protocol of systematic review and meta-analysis of randomized clinical trials

BACKGROUND

Anaphylactic rhinitis (AR) is one of the most common allergic disorders globally. Heat-sensitive moxibustion (HSM) is an effective method for AR without the occurrence of drug damage. This study aims to systematically investigate the effectiveness and safety of HSM for patients with AR.

METHODS

Seven relevant electronic databases from inception until January 2020 including PubMed, Embase, Cochrane Library, the China National Knowledge Infrastructure Database, Wanfang Database, Chinese Biomedical Literature Database, and Chinese Scientific Journal Database will be searched. All relevant randomized clinical trials published in English and Chinese about HSM for AR regardless of blinding or publication types can be included. The Cochrane Central Register of Controlled Trials and other potential articles in the reference list of included studies will also be searched. We recommend total nasal symptom score as primary outcomes. Secondary outcomes includes rhinoconjunctivitis quality of life questionnaire, IgE, visual analogue scale, laboratory examination, and side effects. Study selection, data extraction, and quality assessment will be performed independently by 2 reviewers. Assessment of risk of bias and data synthesis will be conducted by RevMan 5.3 software.

ETHICS AND DISSEMINATION

Ethical approval is not required for no personal data involved. The results of this SR will be disseminated through peer-reviewed publications according to the Preferred Reporting Items for Systematic reviews and Meta Analysis Protocols guidelines.

RESULTS

The results will be published in a peer-reviewed journal.

CONCLUSION

The findings will provide further evidence for the management of AR.

PROSPERO REGISTRATION NUMBER

CRD42019140723.

The Correlation of Allergic Rhinitis with ABO Phenotype

The aim of study the correlation of ABO phenotypes in patients of allergic rhinitis and controls and to compare our study with the previous studies to analyse the association of above. 100 patients with symptoms of allergic rhinitis and 100 controls individual were selected from same geographical region and paired by gender and age were enrolled in the study. Detailed history, examination and relevant radiological and hematological investigations were done. ABO phenotypes were identified in red blood cells using hemagglutination technique. This clinic-based observational study was conducted among the patients presenting with signs and symptoms of allergic rhinitis. Maximum no. of cases were seen in ABO phenotype O (52%), followed by A, B and AB (33, 12 and 3% respectively) and it was found to be statistically significant (p = 0.001). Also more number of male patients were found in B and O blood group which was statistically significant (OR 5.33, p = 0.017 and OR 3.63, p = 0.006 respectively). Controls showed marginalized difference in distribution among the basis of different ABO phenotypes. The O blood group phenotype of ABO histo-blood group system is associated with AR. This study contributes to the better understanding of the pathophysiology and clinical variability of this disease and may help to improve strategies towards its prevention and diagnosis. Additionally, ABO histo-blood group phenotyping, an inexpensive and easy to perform assay could be used to identify individuals at risk of developing allergic rhinitis.

Chinese herbal medicine bi min fang for allergic rhinitis: protocol for a double-blind, double-dummy, randomized controlled trial

BACKGROUND

People with allergic rhinitis (AR) often seek help from Chinese medicine due to dissatisfaction with conventional treatments. Lung-spleen qi deficiency syndrome (LSQDS) is the most common type of AR, and the Chinese herbal medicine formula bi min fang (BMF) is commonly prescribed for AR patients with LSQDS. However, direct evidence supporting its efficacy and safety is not available, and its potential mechanism of action remains unclear.

METHODS/DESIGN

This paper presents a double-blind, double-dummy, randomized controlled trial. After a 2-week run-in period, 80 AR patients with LSQDS will be recruited and randomly allocated to the BMF group or the control group in a 1:1 ratio. The patients in the BMF group will receive BMF and the placebo for levocetirizine hydrochloride orally, while the control group participants will receive levocetirizine hydrochloride and the placebo for BMF orally. All participants will receive 4 weeks of treatment and 12 weeks of follow-up. The primary outcome is a change in the Total Nasal Symptom Score (TNSS). Secondary outcomes include changes in scores for the standard version of the Rhinoconjunctivitis Quality of Life Questionnaire (RQLQ(S)), and visual analog scale (VAS); changes in serum levels of the cytokines interleukin-4, interferon-γ, transforming growth factor β-1, and interleukin-17; and changes in the gut microbiota composition in the stool. The TNSS, RQLQ(S), and VAS will be recorded at the beginning of, middle of and after the treatment period and at the end of each month in the 3-month follow-up period. Blood and stool samples will be collected at baseline and the end of the treatment. The aforementioned four cytokines will be detected in the serum using enzyme-linked immunosorbent assays, and the stool gut microbiota will be detected using 16S ribosomal ribonucleic acid sequencing. Any side effects of the treatment will be recorded.

DISCUSSION

The results of this trial will provide consolidated evidence of the effect of BMF on AR and the potential mechanism by which BMF acts. This study will be the first to explore the mechanism of action of Chinese herbal medicine on the gut microbiota in AR.

TRIAL REGISTRATION

Chinese Clinical Trial Registry, ChiCTR-IPR-17010970 . Registered on 23 March 2017.

Increasing Prevalence of Allergic Rhinitis in China

Allergic rhinitis (AR) is a critical public health, medical and economic problem in China. AR is also an important risk factor which will cause many diseases or disorders, especially in children. The trend of AR incidence is still on the rise in recent years and has had a significant effect on the general public. This significant increase is alarming, which highlights an urgent need for better understanding of the prevalence status and characteristics, sensitization patterns, and the associated risk factors of AR in order to improve treatment and develop effective prevention strategies.

Severity and prevalence of allergic rhinitis among school children, Jazan Region Saudi Arabia

Background:

Allergic diseases such as allergic rhinitis (AR) represent a global health problem, affecting 10–25% of the world population. There is clear evidence to support the concept that allergic diseases are influenced by genetic predisposition and environmental exposure.

Objectives:

To assess the severity and prevalence of AR among school children in Jazan Region, Saudi Arabia.

Methods:

This is a cross-sectional study using a modified International Study of Asthma and Allergies in Children (ISAAC) questionnaire.

Results:

The nasal blocking is considered to be one of the most common symptoms of AR. Regarding the frequency of AR-related symptoms which indicate severity in the last 12 months according to the gender, our statistical analysis results found that the severity regarding nasal symptoms varied from nasal block to disturbed sleep due to nasal block where 97 (6.9%) had nasal block, 109 (7.8%) had nasal block interfering with daily activities, 12.1% had nasal block resulting in breathing difficulties, and 67 (4.7%) had disturbed sleep due to nasal block/problem. About 258 (18.4%) of all population urgently visited the emergency department due to nasal problems. Sixty-four (4.5%) were admitted due to nasal problems and 92 (6.6%) missed school days due to nasal block. The prevalence in elementary and intermediate school was 209 (14.9) and 170 (12.2), respectively with P value of 0.013, according to gender of study population showed no statistical significance according to all parameters. The prevalence was higher among Saudi population, regarding education level the prevalence was higher among intermediate school children.

Conclusion:

In conclusion, it was clear that the prevalence of AR among Saudi school children is 27.1%. Living in urban areas, intermediate school education level, lowlander population are significant risk factors for the prevalence and severity of AR.

Acupuncture for the treatment of allergic rhinitis: A systematic review protocol

BACKGROUND

Allergic rhinitis is a major chronic inflammatory disease of the respiratory tract. A large number of epidemiological investigations have shown that the prevalence of allergic rhinitis (AR) is increasing, resulting in a large burden of disease. Desensitizing drugs such as nasal glucocorticoids and antihistamines are commonly used to treat allergic rhinitis, but this method has a long treatment period and is prone to repeated attacks, and there are certain adverse reactions. Acupuncture can be used to treat a wide variety of diseases including allergic rhinitis without the occurrence of drug damage. We aim to evaluate the efficacy and safety of acupuncture in the treatment of allergic rhinitis.

METHODS

Relevant databases include the English databases incorporating Web of science, PubMed, Springer, Medline, Cochrane Library, EBASE, WHO International Clinical Trials Registry Platform (ICTRP), as well as the Chinese databases like the China National Knowledge Infrastructure Database (CNKI), Chinese Scientific Journal Database (VIP), Wanfang Database, and Chinese Biomedical Literature Database will be searched normatively according to the rule of each database from the inception to September 1, 2018. Reference list of identified studies, potential gray literatures, relevant conference abstracts, and clinical trial registrations will also be searched. The literature screening, data extraction, and quality assessment will be conducted by 2 researchers independently. Data will be synthesized by either the fixed-effects or random-effects model according to a heterogeneity test. Symptom score will be assessed as the primary outcome. Rhinoconjunctivitis quality of life questionnaire (RQLQ), participants with asthma can use asthma control test (ACT), medicine usage and scoring, laboratory examination, and side effects or adverse events will be evaluated as the secondary outcome. Meta-analysis will be performed using RevMan5.3.5 software provided by the Cochrane Collaboration.

RESULTS

This study will provide high-quality synthesis based on current evidence of acupuncture treatment for allergic rhinitis in several aspects, including symptom score, drug score, quality of life score, asthma control score, side effects and laboratory examination such as nasal function test, serum total immunoglobulin (IgE), nasal secretion smear, etc. CONCLUSION:: The results of this study will provide updated evidence for weather acupuncture is an effective and safe intervention for allergic rhinitis.

ETHICS AND DISSEMINATION

It is not necessary for this systematic review to acquire an ethical approval. This review will be disseminated in a peer-reviewed journal or conference presentation.

PROSPERO REGISTRATION NUMBER

PROSPERO CRD42018109105.

Prevalence of allergic and nonallergic rhinitis in a rural area of northern China based on sensitization to specific aeroallergens

BACKGROUND

Most epidemiologic studies reporting prevalence of allergic rhinitis (AR) and nonallergic rhinitis (NAR) have assessed solely self-reported prevalence, without confirmation by objective measures. Furthermore, reports of prevalence of NAR in Chinese subjects are scarce. Thus, we aimed to explore the prevalence and risk factors of AR and NAR in a Chinese, based on both clinical manifestation and allergic status.

METHODS

We conducted a population-based cross-sectional survey, involving 1084 local residents from a rural area of Beijing, China. Participants were enrolled using a stratified two-stage cluster sampling method. All adult participants or the guardians of children completed standardized questionnaires to provide relevant demographic and clinical information. Skin prick tests were also performed to determine sensitization to specific aeroallergens. AR/NAR was classified according to Allergic Rhinitis and its Impact on Asthma criteria.

RESULTS

Prevalence of self-reported AR was 46.80%. Based on SPT results, the confirmed standardized prevalence of AR and NAR were 16.78% and 24.60%, respectively. Severity scores for nasal itching, sneezing, rhinorrhea and congestion were significantly higher in subjects with AR, than subjects with NAR (P < 0.05 for all). The three most common aeroallergens in self-reported AR group were Blattella germanica (16.6%), Dermatophagoides farinae (14.6%), and Dermatophagoides pteronyssinus (13.9%). Family history of AR and atopic dermatitis were significantly associated with AR (adjusted OR: 4.97 and 2.69, respectively), whereas family history of AR and asthma were significantly associated with NAR (adjusted OR: 3.53 and 2.45, respectively). Similarly, comorbid asthma, CRS, and atopic dermatitis were significant risk factors for both AR and NAR.

CONCLUSIONS

Combination of standardized questionnaires and specific allergen tests may provide more accurate estimates of prevalence of AR and NAR and associated risk factors.

Efficacy of indoor air purification in treating Artemisia (mugwort) pollen allergic rhinitis: study protocol for a randomised controlled trial

BACKGROUND

Allergic rhinitis (AR) is a worldwide health problem. Allergen avoidance is strongly recommended for AR patients. Air purification can reduce concentrations of particles in indoor air, including those of allergens. Air purifiers have been recommended by clinicians for AR patients, but few studies have focused on the removal of airborne allergens from home environments. Such studies have been limited by a lack of blinding, small samples, or a failure to measure allergen levels, disease activity, or a combination of these factors. This study investigates the efficacy of a high-efficiency air purifier in reducing disease activity in the homes of AR patients sensitive to the allergens produced by Artemisia (mugwort) pollen.

METHODS

This is a randomized, double-blind, clinical controlled trial that will test active and inactive versions of an air purifier (Atmosphere®; Amway China). Sixty AR patients sensitive to the allergens produced by Artemisia pollen will be assigned randomly to two groups of equal numbers. All patients will undergo a 4-week treatment period and a 4-week observation period. Evaluation will be conducted at baseline (day 0) and on days 7, 14, 21, 28, and 56. The primary outcome measure will be the difference in visual analog scale scores from baseline. Secondary outcomes will be changes from baseline in nasal symptoms, allergy symptom scores, responses to the Rhinoconjunctivitis Quality of Life Questionnaire, Epworth Sleepiness Scale scores, and tolerability scores for the air purifier. Side effects of treatment will be recorded.

DISCUSSION

Reducing exposure to allergens can reduce the risk of conditions such as AR. We hypothesise that AR patients sensitive to the allergens produced by Artemisia pollen will not suffer symptoms in a pollen-free environment. AR patients can remove pollen from their homes using air purifiers, decreasing the risk of symptoms. We expect that our study results will provide reliable evidence for determining the effects of air-purification therapy.

TRIAL REGISTRATION

ChiCTR-INR-17012481 . (Retrospectively registered 26 August 2017).

Efficacy of indoor air purification in treating Artemisia (mugwort) pollen allergic rhinitis: study protocol for a randomised controlled trial

BACKGROUND

Allergic rhinitis (AR) is a worldwide health problem. Allergen avoidance is strongly recommended for AR patients. Air purification can reduce concentrations of particles in indoor air, including those of allergens. Air purifiers have been recommended by clinicians for AR patients, but few studies have focused on the removal of airborne allergens from home environments. Such studies have been limited by a lack of blinding, small samples, or a failure to measure allergen levels, disease activity, or a combination of these factors. This study investigates the efficacy of a high-efficiency air purifier in reducing disease activity in the homes of AR patients sensitive to the allergens produced by Artemisia (mugwort) pollen.

METHODS

This is a randomized, double-blind, clinical controlled trial that will test active and inactive versions of an air purifier (Atmosphere®; Amway China). Sixty AR patients sensitive to the allergens produced by Artemisia pollen will be assigned randomly to two groups of equal numbers. All patients will undergo a 4-week treatment period and a 4-week observation period. Evaluation will be conducted at baseline (day 0) and on days 7, 14, 21, 28, and 56. The primary outcome measure will be the difference in visual analog scale scores from baseline. Secondary outcomes will be changes from baseline in nasal symptoms, allergy symptom scores, responses to the Rhinoconjunctivitis Quality of Life Questionnaire, Epworth Sleepiness Scale scores, and tolerability scores for the air purifier. Side effects of treatment will be recorded.

DISCUSSION

Reducing exposure to allergens can reduce the risk of conditions such as AR. We hypothesise that AR patients sensitive to the allergens produced by Artemisia pollen will not suffer symptoms in a pollen-free environment. AR patients can remove pollen from their homes using air purifiers, decreasing the risk of symptoms. We expect that our study results will provide reliable evidence for determining the effects of air-purification therapy.

TRIAL REGISTRATION

ChiCTR-INR-17012481 . (Retrospectively registered 26 August 2017).

Chinese Society of Allergy Guidelines for Diagnosis and Treatment of Allergic Rhinitis

Allergic rhinitis (AR) is a global health problem that causes major illnesses and disabilities worldwide. Epidemiologic studies have demonstrated that the prevalence of AR has increased progressively over the last few decades in more developed countries and currently affects up to 40% of the population worldwide. Likewise, a rising trend of AR has also been observed over the last 2-3 decades in developing countries including China, with the prevalence of AR varying widely in these countries. A survey of self-reported AR over a 6-year period in the general Chinese adult population reported that the standardized prevalence of adult AR increased from 11.1% in 2005 to 17.6% in 2011. An increasing number of Journal Articles and imporclinical trials on the epidemiology, pathophysiologic mechanisms, diagnosis, management and comorbidities of AR in Chinese subjects have been published in international peer-reviewed journals over the past 2 decades, and substantially added to our understanding of this disease as a global problem. Although guidelines for the diagnosis and treatment of AR in Chinese subjects have also been published, they have not been translated into English and therefore not generally accessible for reference to non-Chinese speaking international medical communities. Moreover, methods for the diagnosis and treatment of AR in China have not been standardized entirely and some patients are still treated according to regional preferences. Thus, the present guidelines have been developed by the Chinese Society of Allergy to be accessible to both national and international medical communities involved in the management of AR patients. These guidelines have been prepared in line with existing international guidelines to provide evidence-based recommendations for the diagnosis and management of AR in China.

Chinese Herbal Medicine to Treat Allergic Rhinitis: Evidence From a Meta-Analysis

Purpose

Chinese herbal medicine (CHM) has been widely used in China to treat allergic rhinitis (AR). However, several studies have produced conflicting data with regard to the efficacy of the medicine. Our aim was to perform a meta-analysis of randomized clinical trials (RCTs) to evaluate the relative efficacy of CHM.

Methods

We systematically searched the PubMed, Medline, and Springer electronic databases up to March 2017 for RCTs comparing the efficacy of CHM versus placebo for the treatment of patients with AR. Total nasal symptoms and quality of life were assessed through pooling mean difference (MD) with its 95% confidence interval (CI). Moreover, sensitivity and subgroup analyses according to control design and quality of life assessment were performed to evaluate the source of heterogeneity.

Results

Eleven RCTs were enrolled in the meta-analysis. Assessment of overall heterogeneity indicated significant heterogeneity among the individual studies (I²=100%, P<0.00001), and thus ransomed effects model was used to pool data. CHM was found to significantly enhance quality of life compared with placebo (MD=-0.88, (95% CI: -1.55, -0.21); P=0.01). The symptom of itchy nose, sneezing or total nasal symptoms scores were not significantly improved after CHM treatment, although the improvement in itchy nose just failed to reach significance (MD=0.09, (95% CI: 0.00, 0.18); P=0.06).

Conclusions

This study suggests that CHM appears to improve the quality of life of AR patients. However, these findings, as well as the findings for the effect of CHM on sneezing, total nasal symptoms, and the symptom of itchy nose, need to be substantiated in larger cohorts of AR patients by further well-designed studies.

Sensitization patterns and minimum screening panels for aeroallergens in self-reported allergic rhinitis in China

Optimization of skin prick test (SPT) panels, especially in view of significant differences in sensitizations patterns within different geographical areas, is an unmet need within China. Our aim was to assess the patterns and clinical relevance of aeroallergen sensitizations in allergic rhinitis (AR) and define the minimal battery of SPT allergens, classified according to the Köppen-Geiger climate map. Overall, 7148 subjects with self-reported AR completed a standard questionnaire and were assessed for sensitization to relevant allergens by SPT. 6340 (88.7%) patients had at least one positive skin prick reaction, and demonstrated unique sensitization patterns by stratification with age, gender, and geographic region. Sensitization to house dust mites (HDM) was highest in south China, whereas the three most prevalent aeroallergens were mugwort, ragweed and dandelion pollen in north-west China. Higher sensitization rates and multiple sensitizations were associated with AR comorbidities. Eight allergens (Der f, mugwort, Blatella, hazel, goosefoot, Penicillium notatum, animal dander and Der p) allowed identification >96% of sensitized subjects in central China. Differences in optimal panels were observed between regions, with five to six allergens being sufficient for north-east, north-west and south China. These SPT panels may provide a cost-effective tool for screening sensitized patients in China.

Allergic and Non-Allergic Rhinitis Are Common in Obstructive Sleep Apnea but Not Associated With Disease Severity

STUDY OBJECTIVES

Several studies have suggested that rhinitis contributes to the pathogenesis of obstructive sleep apnea (OSA). We aimed to investigate the prevalence and influence of allergic rhinitis (AR) and non-allergic rhinitis (NAR) on severity of OSA.

METHODS

Two hundred forty patients with OSA confirmed by standardized polysomnography were assessed for presence of AR and NAR, using validated questionnaires and skin prick tests. Data comparison was carried out by using chi-square test, analysis of variance, and least significant difference test. Associations between severity of OSA and rhinitis, age, sex, and body mass index were assessed with ordinal logistic regression analysis.

RESULTS

The prevalence of AR and NAR among patients with OSA was 27.1% and 28.7%, respectively, with no significant differences in the severity of rhinitis. Ordinal logistic regression analysis showed AR and NAR were not the risk factors for severity of OSA. There were significant differences of polysomnography parameters in sleep efficiency (79.7 ± 2.0 versus 85.2 ± 1.4 between AR and NAR; 79.7 ± 2.0 versus 87.2 ± 1.4 between AR and no-rhinitis) and arousal index (36.8 ± 4.1 versus 24.7 ± 3.5 between AR and no-rhinitis). Patients with NAR had lower average arterial oxygen saturation (91.9 ± 0.6 versus 94.0 ± 0.6) and minimal arterial oxygen saturation (70.6 ± 1.7 versus 77.3 ± 1.8), compared with subjects categorized as no-rhinitis.

CONCLUSIONS

This study suggests that despite a comparatively high prevalence in patients with OSA, the presence or severity of AR or NAR does not influence the severity of OSA; however, rhinitis may significantly disturb sleep in patients with OSA.

Semi-depot house-dust mite allergen extract for Chinese with allergic rhinitis and asthma

BACKGROUND

Real-world data of the subcutaneous immunotherapy (SCIT) with semi-depot house-dust mite (HDM) allergen extract (a HDM allergen extract that contains a 50%-50% mixture of Dermatophagoides pteronyssinus and Dermatophagoides farina) for allergic rhinitis and asthma was unavailable in China until recently.

AIM

To investigate the effectiveness and safety of a HDM-SCIT for allergic rhinitis and asthma in Chinese patients.

METHODS

A multicenter, single-arm, open-label, self-controlled study. Chinese patients with allergic rhinitis or allergic asthma and with a history of symptoms from HDM exposure were included and received allergen-specific immunotherapy for 1 year by subcutaneous injection of HDM-SCIT. The primary outcome measure was the percentage of patients with an improvement in symptom severity assessed at 12 months after initiation of the treatment. The occurrence of adverse events and compliance of treatment were also evaluated.

RESULTS

A total of 272 outpatients were included for effectiveness analysis. The subject-evaluated improvement rate in the visual analog scale (VAS) was 76.1% and 71.3% at 6 and 12 months, respectively; corresponding values for investigator-evaluated VAS were 77.9% and 71.7%, respectively (p < 0.0001). Symptom score changes were -2.43 and -3.79 at 6 and 12 months, respectively (both p < 0.0001); the VAS improvement rate and symptom score change did not differ significantly between children and adolescents and/or adults. Good injection schedule adherence was found in 98.8% of the patients. No study drug-related serious adverse events or serious systemic allergic reactions occurred.

CONCLUSION

HDM-SCIT was safe and effective in the treatment of allergic rhinitis and asthma in a Chinese population, with good compliance.

Neonatal Immune State Is Influenced by Maternal Allergic Rhinitis and Associated With Regulatory T cells

Purpose

Maternal influences contribute to the origin of allergic diseases, but the mechanisms are not clear. The current literature prompted the role of epigenetics in the development of allergic diseases. We sought to investigate the roles of regulatory T (Treg) cells and Forkhead box p3 (Foxp3) DNA methylation in the process of maternal transmission of allergic rhinitis (AR) susceptibility.

Methods

BALB/c female mice (AR mother) were sensitized by intraperitoneal injection of Dermatophagoides pteronyssinus (Der p) 1 on day 1 and 7. Then they mated with normal male mice on day 8. From day 21 to 28, the female mice were intranasal challenged with Der p 1 continuously. The normal controls were given with normal saline in the same way. On postnatal day 3, Female mice and their offspring were sacrificed to detect their histopathology in nasal mucosae, cytokines in sera of mother and spleen homogenates of offspring, Treg cells count, Foxp3 mRNA expressions, and Foxp3 DNA methylation levels in spleens.

Results

Compared with the normal controls, neonatal offspring of Der p 1-stimulated female mice (AR offspring) showed the elevation of interleukin (IL)-4 (P<0.01) and IL-17 (P<0.01), the submission of IL-10 (P<0.01) in spleen homogenates. Further, Treg cells count in AR offspring decreased remarkably compared with the normal offspring (P<0.01). Though the difference of Foxp3 DNA methylation level between AR offspring and normal control offspring was not obvious, correlation analysis demonstrated that there was significantly positive correlation between Foxp3 DNA methylation level of mother and that of offspring (r=0.803, P<0.01).

Conclusions

Under the influence of Maternal AR, their neonatal offspring develop into T-helper type 2 (Th2) dominant immune state, which is closely associated with the recession of Treg cells. Foxp3 DNA methylation may be a mechanism responsible for that maternal effect but still need more studies to ensure.

Efficacy and safety of using a warming needle for persistent allergic rhinitis: study protocol for a randomized controlled trial

Background

Many previous studies have shown the potential therapeutic effect of acupuncture for allergic rhinitis. Most of these studies, however, were limited by the short duration of observations and lack of sham acupuncture as the control group. Our preliminary experiments showed that the use of a warm needling achieved a much more persistent effect in the treatment of allergic rhinitis (AR) compared with simple acupuncture therapy. Hence, we have designed a multicenter, randomized controlled trial (RCT) in which the first-line medication loratadine will be used as the control group, and the effect of warm needling therapy will be evaluated through long-term observation.

Methods/design

The trial is designed as a multicenter, parallel-group, randomized, single-blinded (outcome assessors), non-inferiority trial. A total of 98 patients with persistent AR will be randomly assigned into two groups. Patients in the treatment group will be treated with warm needling at GV14 and acupuncture at EX-HN3, ST2, LI20, EX-HN8, GV23, LU7, LU5 and LI4 three times a week, for a total of 4 weeks. Patients in the control group will be treated with oral loratadine 10 mg/day for 4 weeks. The primary outcome will be the change in the Total Nasal Symptom Score (TNSS) from baseline to that at 6 months after treatment during the follow-up period. The secondary outcomes will include the Total Non-nasal Symptom Score and the Rhinoconjunctivitis Quality of Life Questionnaire, changes in the TNSS from baseline to that at 2 and 4 weeks during treatment, and 3 months after treatment during the follow-up period. Outcomes will be measured at 2 and 4 weeks, and 3 and 6 months after treatment. Any side effects of treatment will be observed and recorded.

Discussion

We expect that the study results will provide evidence to determine the effects of warm needling compared with loratadine. Our final goal of the study is to evaluate the difference in the short-term and long-term effects between the two therapeutic methods, especially the long-term effect of warm needling.

Trial registration

ClinicalTrials.gov NCT02339714. Registered on 14 January 2015.

Electronic supplementary material

The online version of this article (doi:10.1186/s13063-016-1432-z) contains supplementary material, which is available to authorized users.