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Introduction: Tryptase is an important biomarker widely used in the laboratory confirmation of severe hypersensitivity reactions, especially anaphylaxis. It also plays a crucial role in the diagnosis, risk stratification, management and prognostic evaluation of many other mast cell-related conditions. Aim: This paper aims to highlight the role of serum tryptase, both in allergic disorders and other mast cell-related conditions. Two clinical cases regarding timely serum tryptase acquisition (in drug hypersensitivity reactions during the imaging procedure and perioperative anaphylaxis) are meant to emphasize the clinical potential of this protease. Method: We performed a comprehensive literature search of the PubMed/Medline and Scopus databases. From a total of 640 subject related publications, dating from 1940 to 2024, 45 articles written in English were selected. Literature search results: Total serum tryptase is a simple, cost-effective analysis with a normal baseline tryptase (sBT) level below 8.4 µg/L. Elevated sBT can indicate hereditary alpha-tryptasemia (HαT), mastocytosis and other non-allergic disorders. Patients with higher sBT levels, especially with insect venom allergy, have an increased risk of severe reactions and thereby require a prolonged treatment. All immediate systemic hypersensitivity reactions require a correlation between serum acute tryptase (sAT) and sBT. According to the guidelines, measuring sAT 30 min to 2 h after the symptom onset and sBT 24 h after the resolution, using the 20 + 2 rule and an sAT/sBT ratio of 1.685, improves the diagnostic accuracy in anaphylaxis. Conclusions: Tryptase levels should be acquired in all cases with clinical suspicion of MC degranulation. Given the increasing clinical relevance, elevated baseline serum tryptase levels require a multidisciplinary approach and further investigation.

Background: Strong epidemiological evidence suggests that air pollution plays a significant role in the exacerbation of allergic respiratory diseases. This study aimed to assess the potential relationship between daily levels of sulfur dioxide (SO 2 ) and emergency department (ED) visits for allergic diseases., Materials and Methods: Data regarding ED visits for allergic respiratory diseases were routinely collected from the EDs in the Zlatibor district, and the General Hospital, Užice. The daily average concentrations of SO 2 were obtained from the regional automatic air quality monitoring stations. All data were collected from June 2012 to July 2014. A time-stratified case-crossover design was used. Crude odds ratios (ORs) and ORs adjusted for weather conditions were calculated using conditional logistic regression., Results: Statistically significant associations were seen between 0-day lagged exposure to SO 2 and ED visits for all allergic diseases (OR = 1.62; 95% confidence interval [CI]: 1.05-2.48; P = 0.028) and between 2-day lagged exposure to SO 2 and ED visits for asthma with allergic rhinitis (OR = 2.00; 95% CI: 1.03-3.88; P = 0.042). These results were adjusted for temperature, temperature 2 , and humidity., Conclusion: Our results suggest that short-term exposure to SO 2 conferred an increased risk of ED visits for allergic respiratory diseases, particularly for asthma with concomitant allergic rhinitis., Competing Interests: There are no conflicts of interest., (Copyright: © 2021 Journal of Research in Medical Sciences.)

Background: As in many fields of medical care, the coronavirus disease 2019 (COVID-19) resulted in an increased uncertainty regarding the safety of allergen immunotherapy (AIT). Therefore, the European Academy of Allergy and Clinical Immunology (EAACI) aimed to analyze the situation in different countries and to systematically collect all information available regarding tolerability and possible amendments in daily practice of sublingual AIT (SLIT), subcutaneous AIT (SCIT) for inhalant allergies and venom AIT., Methods: Under the framework of the EAACI, a panel of experts in the field of AIT coordinated by the Immunotherapy Interest Group set-up a web-based retrospective survey (SurveyMonkey ® ) including 27 standardized questions on practical and safety aspects on AIT in worldwide clinical routine., Results: 417 respondents providing AIT to their patients in daily routine answered the survey. For patients (without any current symptoms to suspect COVID-19), 60% of the respondents informed of not having initiated SCIT (40% venom AIT, 35% SLIT) whereas for the maintenance phase of AIT, SCIT was performed by 75% of the respondents (74% venom AIT, 89% SLIT). No tolerability concern arises from this preliminary analysis. 16 physicians reported having performed AIT despite (early) symptoms of COVID-19 and/or a positive test result for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)., Conclusions: This first international retrospective survey in atopic diseases investigated practical aspects and tolerability of AIT during the COVID-19 pandemic and gave no concerns regarding reduced tolerability under real-life circumstances. However, the data indicate an undertreatment of AIT, which may be temporary, but could have a long-lasting negative impact on the clinical care of allergic patients., (© 2021 The Authors. Allergy published by European Academy of Allergy and Clinical Immunology and John Wiley & Sons Ltd.)

Background: Atopic dermatitis (AD) is the most common chronic inflammatory skin disease, with a significant effect on the quality of life (QoL). This study aims to evaluate the impact of AD on the QoL of children and their parents and to identify predictors affecting their QoL., Methods: The cross-sectional study was conducted in Montenegro. It included 200 children with AD aged 5-16 years and their parents. The severity of disease was measured by the Three Item Severity (TIS) score, while QoL was assessed with the Children's Dermatology Life Quality Index (CDLQI) and the Dermatitis Family Impact (DFI) questionnaire., Results: The mean CDLQI score of the children affected by AD was 17.11 and the mean DFI score of their parents 19.86. There was a significant correlation between AD severity score assessed by a doctor (TIS) and both CDLQI and DFI scores (r=0.53 and r=0.27, respectively). A moderate positive correlation was observed between the QoL of children with AD and QoL of their parents (r=0.53). According to multiple linear regression, more impaired QoL of affected children was associated with more severe AD, younger parent's age and their lower educational level. Poorer QoL of parents was associated with female sex, younger age of children, more severe AD, lower educational level of parents and absence of a family history of atopic disease., Conclusions: The present study confirmed that AD has a large negative impact on QoL of both patients with AD and their families. More impaired QoL was associated with more severe AD.

Introduction: Many time-series studies have shown a positive association between air pollution and asthma exacerbation. However, till now only one study in Serbia has examined this relationship., Aim: To examine the associations between air pollution and asthma emergency department (ED) visits in the Užice region, Serbia., Material and Methods: A time-stratified case-crossover design was applied to 424 ED visits for asthma exacerbation that occurred in the Užice region, Serbia, in 2012-2014. Data about ED visits were routinely collected in the Užice Health Centre. The daily average concentrations of particulate matter (PM 2.5 and PM 10 ), sulphur dioxide (SO 2 ), nitrogen dioxide (NO 2 ), and black carbon (BC) were measured by automatic ambient air quality monitoring stations. Odds ratios and their corresponding 95% confidence intervals were estimated using conditional logistic regression adjusted for the potential confounding influence of weather variables (temperature, humidity and air pressure)., Results: Statistically significant associations were observed between ED visits for asthma and 3-day lagged exposure to BC (OR = 3.23; 95% CI: 1.05-9.95), and between ED visits for asthma with coexisting allergic rhinitis and 0-day lag exposure to NO 2 (OR = 1.57; 95% CI: 0.94-2.65), 2-day lag exposure to SO 2 (OR = 1.97; 95% CI: 1.02-3.80), and 3-day lag exposure to PM 10 (OR = 2.38; 95% CI: 1.17-4.84)., Conclusions: Exposure to ambient air pollution in the Užice region increases the risk of ED visits for asthma, particularly during the heating season., Competing Interests: The authors declare no conflict of interest., (Copyright: © 2020 Termedia Sp. z o. o.)

Background and objectives: The relationship between air pollen quantity and the sensitization of allergic patients is crucial for both the diagnosis and treatment of allergic diseases. Weather conditions influence the distribution of allergenic pollen and increases in pollen concentration may negatively affect the health of allergic patients. The aim of this study was to analyze the implementation of allergen immunotherapy with regard to air pollen concentration. Material and Methods : Here we examined the relationship between Betula air pollen concentration and the usage of Betula verrucosa allergen immunotherapy in Serbia. Examination covered the period from 2015 to 2018. Measurement of airborne pollen concentration was performed with Lanzoni volumetric pollen traps. The evidence of the usage of sublingual allergen immunotherapy (SLIT) was gathered from patients with documented sensitization to specific pollen. Results: During this period tree pollens were represented with 58% ± 21% of all measured air pollen species, while Betula pollen represented 15% ± 8% of all tree pollens. Betula pollination peaked in April. Allergen immunotherapy to Betula verrucosa in Serbia is entirely conducted as sublingual immunotherapy and represents 47.1% ± 1.4% of issued tree pollen SLIT. The use of pollen SLIT increased by 68% from 2015 to 2018, with an even greater increase in usage recorded for Betula SLIT-80%. Conclusions: This analysis shows a clear causative relationship between pollination and the type/prevalence of applied allergen immunotherapy. Information about the flowering seasons of allergenic plants is very important for people who suffer from allergy, for clinical allergologists, as well as for governing authorities. The presented data is of practical importance to the proper timing of immunotherapy initiation and of importance for urban landscaping. The obtained data can be the starting point for the instatement of a thorough epidemiological study and the inclusion of Serbia on the pollen map of Europe., Competing Interests: The authors declare no conflict of interest.

Background: Atopic dermatitis (AD) is one of the most common childhood skin diseases that can affect the quality of life (QoL) of children. The QoL of Montenegrin children with AD has not been sufficiently explored. The aim of this study was to assess their QoL with special emphasize on age differences., Methods: This cross-sectional study included children with AD seen at the Clinic of Dermatology and Venereology, Clinical Center of Montenegro (CCM) in Podgorica between August 2017 and July 2018. The QoL was assessed with the Infants' Dermatitis Quality of Life Index (IDQOL) and the Children's Dermatology Life Quality Index (CDLQI). Disease severity was measured by the Three Item Severity (TIS) score., Results: A total of 386 children with AD aged from newborn to 16 years took part in this study. The mean total score of the QoL was 14.7 in infants (0-4 years old), 19.4 in younger children (5-9 years old), and 16.6 in older children (10-16 years old). Age was in negative correlation with the CDLQI score, leisure domain of the CDLQI and CDLQI sleep, and in positive correlation with the IDQOL child mood. TIS score was in positive correlation with both the IDQOL and CDLQI score., Conclusions: The QoL measured by CDLQI was more impaired in younger children, whilst IDQOL child mood was more impaired in older infants. The most impaired QoL was seen in children in the age group 5-9 years. Regardless of disease severity, treatment and counseling of children suffering from AD should be tailored specifically to their age., Competing Interests: The authors have declared that no competing interests exist.

Background and Objectives: Many epidemiological studies have shown a positive association between black carbon (BC) and the exacerbation of allergic rhinitis and allergic asthma. However, none of the studies in Serbia examined this relationship yet. The aim of this study was to examine the associations between BC and emergency department (ED) visits for allergic rhinitis and allergic asthma in the Užice region of Serbia. Materials and Methods: A time-stratified case-crossover design was applied to 523 ED visits for allergic rhinitis and asthma exacerbation that occurred in the Užice region of Serbia between 2012-2014. Data regarding ED visits were routinely collected in the Health Center of Užice. The daily average concentrations of BC were measured by automatic ambient air quality monitoring stations. Odds ratios (ORs) and their corresponding 95% confidence intervals (CIs) were estimated using conditional logistic regression adjusted for the potential confounding influence of weather variables (temperature, humidity, and air pressure). Results : Statistically significant associations were observed between ED visits for allergic rhinitis and 2-day lagged exposure to BC (OR = 3.20; CI = 1.00-10.18; p = 0.049) and allergic asthma and 3-day lagged exposure to BC (OR = 3.23; CI = 1.05-9.95; p = 0.041). Conclusion: Exposure to BC in the Užice region increases the risk of ED visits for allergic rhinitis and asthma, particularly during the heating season.

Introduction: Primary mucosal melanoma of the sinonasal tract is a rare neoplasm, accounting for less than 1% of all melanomas. It has an aggressive and unpredictable biologic behavior characterized by frequent incidence of local recurrence, local and distant metastasis of the disease., Case Report: This report summarizes the results of the previous research concerning sinonasal mucosal melanoma, and by the example of the two patients suffering from mucosal melanoma, we described clinical and histopathological features of this rare neoplasm and our experience in its diagnosis and treatment., Conclusion: Only histopathological analysis complemented by immunobistochemical analysis contributes to early and accurate diagnosis of the disease.

Introduction: Angioedema is characterized by subcutaneous and/or submucosal swelling usually localized to the lips, eyelids, tongue, oral cavity, larynx and pharynx. Various types of angioedema, caused by different pathophysiologic mechanisms, can have the same or very similar clinical picture and require different diagnostic and therapeutic procedures. The immediate threat to life as a result of rapidly developed edema of the pharynx and larynx with airway obstruction requires endotracheal intubation or emergency tracheotomy. Standard therapy, which includes epinephrine, second-generation antihistamines and steroids, is not effective in the treatment of all types of angioedema., Objective: On the basis of the clinical presentation and course of angioedema, this retrospective study was aimed at contributing to a better understanding of the etiopathogenesis of the disease and at helping determine the most effective available treatment modalities., Methods: This retrospective study included patients treated under the diagnosis of angioedema of the upper aerodigestive tract between 2000 and 2012 in the Department of Otorhinolaryngology, Clinical Center of Banja Luka., Results: A total of 76 subjects were included in the study. The average age was 62.8 years. There were 40 (52.6%) male and 36 (47.4%) female patients. The largest number of patients (44.7%) had type II angioedema. Almost half of the patients or 36 patients (47.4%) were on treatment with an angiotensin-converting enzyme inhibitor (ACEi), but there was no statistically significant difference under the total number of patients (p=0.678)., Conclusion: Better understanding of pathophysiologic mechanisms and the adoption of diagnostic protocols contributes to more effective treatment of angioedema.