scholarly journals Peran β-glucan dalam diagnosis rinosinusitis kronik jamur

2018 ◽  
Vol 48 (1) ◽  
pp. 34
Author(s):  
Dhaniel Abdi Wicaksana ◽  
Rus Suheryanto ◽  
Iriana Maharani

Latar Belakang: Rinosinusitis kronik jamur merupakan permasalahan kesehatan terutama dinegara berkembang karena prevalensinya yang semakin meningkat, sulitnya penanganan medis, sertaberdampak besar terhadap penurunan kualitas hidup. Saat ini tengah dikembangkan teknologi untukmembantu penegakan diagnosis tanpa tindakan invasif, yaitu dengan memanfaatkan β-glucan sebagaikomponen terbesar penyusun dinding sel beberapa spesies jamur. Tujuan: Mengetahui hubungan antarakadar β-glucan jaringan sinus dan serum darah untuk diagnosis rinosinusitis kronik jamur. Metode:Penelitian cross sectional ini melibatkan 20 subjek penelitian. Dilakukan pengambilan sampel darah, danpembedahan sinus maksila untuk mengambil jaringan mukosa, yang kemudian dilanjutkan pemeriksaanpolymerase chain reaction (PCR) untuk identifikasi jamur pada mukosa sinus. Bila didapatkan spesiesjamur yang memiliki β-glucan, dilakukan pemeriksaan enzyme-linked immunosorbent assay (ELISA) untukpengukuran kadar β-glucan. Hasil: Aspergillus flavus merupakan jamur yang paling banyak ditemukan.Seluruh subjek melampaui batasan positif β-glucan (≥80 pg/mL) dari spesimen mukosa, dan hanya 1subjek memberikan hasil intermediate (60-79 pg/mL) dari darah. Uji t berpasangan mendapatkan kadarβ-glucan darah tidak berbeda bermakna dengan mukosa sinus (p=0,886), sehingga pemeriksaan β-glucanpada darah dapat menggambarkan kadar β-glucan pada sinus paranasal. Kesimpulan: β-glucan dapatdimanfaatkan untuk membantu memperoleh diagnosis rinosinusitis kronik jamur, sehingga diharapkandiagnosis dapat ditegakkan dengan cepat dan tepat tanpa memerlukan tindakan invasif, namun hasil inimembutuhkan penelitian lebih lanjut, khususnya terkait uji diagnostik.  ABSTRACTBackground: Chronic fungal rhinosinusitis is a major health problem particularly in developingcountries due to its increasing prevalence, difficult medical treatment, and also could make a large impacton the quality of life. The current technology to establish diagnosis without invasive procedure is byutilizing β-glucan, the largest component of fungal cell wall in some fungal species. Purpose: To discoverthe correlation of β-glucan level in paranasal sinus tissue and blood serum as a potential diagnosismarker for chronic fungal rhinosinusitis. Methods: A cross sectional study involving 20 subjects. Bloodsampling and maxillary sinus surgery were performed, then fungi identification in the sinus mucosawas done by Polymerase Chain Reaction (PCR). If a fungal species with β-glucan was found, then theexamination was continued with the measurement of β-glucan by Enzyme-Linked Immuno Sorbent Assay(ELISA) technique in sinus and blood. Results: Aspergillus flavus is the most commonly found fungus. Allsubjects passed the positive β-glucan limit (≥80 pg/mL) of the mucosal sample, and only 1 subject hadintermediate results (60-79 pg/mL) from the blood. Paired t-test result showed no significant differencebetween the level of β-glucan in blood and mucosal sinus (p=0.886), so that β-glucan blood examinationcould illustrate β-glucan levels in paranasal sinuses. Conclusion: β-glucan may be used to establishthe diagnosis of fungal chronic rhinosinusitis with one hope that the diagnosis process can be obtainedquickly and accurately without invasive procedure, although it still requires more studies, particularlyrelated to diagnostic test.

2018 ◽  
Vol 159 (1) ◽  
pp. 185-193 ◽  
Author(s):  
Matthew A. Tyler ◽  
Caroline J. Padro Dietz ◽  
Chris B. Russell ◽  
Martin J. Citardi ◽  
Shervin Assassi ◽  
...  

Objective Allergic fungal rhinosinusitis (AFRS) is a clinical subtype of chronic rhinosinusitis with nasal polyps (CRSwNP), characterized by eosinophilic mucin, evidence of fungal elements within the mucin, fungal-specific type I hypersensitivity, and characteristic computed tomography findings. It remains controversial whether AFRS represents a disease with a unique pathophysiology from chronic rhinosinusitis or is merely a severe form of CRSwNP. The goal of this study was to identify molecular features unique to AFRS. Study Design Cross-sectional case-control. Setting Single academic tertiary referral institution. Subjects and Methods Subjects included 86 patients undergoing endoscopic sinus surgery: CRSwNP (n = 34), AFRS (n = 37), and healthy controls (n = 15). Pathway and correlation analyses were performed with whole-genome microarray data for study patients undergoing surgery for recalcitrant chronic rhinosinusitis. Our findings were confirmed with quantitative polymerase chain reaction and immunohistochemical studies. Results AFRS was uniquely characterized by a pronounced association with adaptive T helper 2–associated immune gene expression. AFRS exhibited altered expression of proteins associated with secretory salivary peptides—namely, histatin, a peptide with known antifungal activity in the oral cavity. Furthermore, the expression of histatins correlated negatively with that of type 2 inflammatory mediators. We confirm the decreased expression of histatins in AFRS when compared with CRSwNP by quantitative polymerase chain reaction and localized its expression to a submucosal cell population. Conclusion There exist clear molecular profiles that distinguish AFRS from CRSwNP. This divergence translates into an altered ability to control fungal growth and may in part explain some of the phenotypical differences between CRSwNP and AFRS.


2020 ◽  
Vol 8 (B) ◽  
pp. 1110-1115
Author(s):  
Mayetti Akmal ◽  
Amirah Zatil Izzah ◽  
Jamsari ◽  
Eriyati Darwin ◽  
Dadang Hudaya Somasetia

BACKGROUND: In general, angiopoietin-2 levels are increased concomitantly with dengue clinical severity. AIM: This research aims to determine the role of mutation on angiopoietin-2 on dengue clinical severity. METHODS: A cross-sectional study of 108 children with dengue disease grouped by severity. Angiopoietin-2 level was examined by enzyme-linked immunosorbent assay. Polymerase chain reaction and double nucleic acid sequencing are using 2 Exon 4-F primers. RESULTS: Angiopoietin-2 levels on rs7834131 mutant are higher in dengue fever (p < 0.05) and dengue hemorrhage fever group than non-mutant, while on dengue shock syndrome, it is lower than non-mutant. CONCLUSION: Angiopoietin-2 mutation on rs7834131 might have a protective effect on dengue disease severity.


Author(s):  
Fatima Jummai Giwa ◽  
Maria Garba ◽  
Abdulaziz Mukhtar ◽  
Mukhtar Idris ◽  
Belinda Lartey ◽  
...  

Abstract Objective This study aimed to determine the circulating rotavirus genotypes among children 0 to 59 months with acute gastroenteritis in Zaria, Northwestern Nigeria. Methods A cross-sectional hospital-based study was performed from November 2015 to April 2017 on 415 stool samples of children 0 to 59 months with acute gastroenteritis presenting at the pediatric clinics in five selected health care facilities in Zaria, Northwestern Nigeria. The stool samples were tested for group A rotavirus antigen by enzyme-linked immunosorbent assay (ELISA) using the ProSpecT™ Rotavirus Microplate Assay (Thermo Scientific Oxoid, United Kingdom). Rotavirus-positive strains were further characterized using seminested multiplex reverse transcriptase polymerase chain reaction. Results Of the 415 diarrheal stool samples collected from children with acute gastroenteritis, 12.3% (n = 51) tested positive by ELISA. Five rotavirus G genotypes (G1, G2, G3, G9, and G12) and three P genotypes (P[4], P[6], and P[8]) were detected. Eight genotype combinations were detected with G1P[8], G12P[8], and G3P[6] being the most prevalent (9.8% each) followed by G1P[6], G2P[4], and G9P[8] (5.9% each). G/P mix types representing 25.5% (n = 13) of strains were detected during the study period. Conclusion This study found a high diversity of rotavirus strains with emerging unusual rotavirus genotypes and a concurrent high proportion of mixed infections. This increased antigenic diversity of rotavirus strains may impact on vaccine effectiveness and rotavirus epidemiology and highlights the importance of continuous surveillance.


2016 ◽  
Vol 10 (10) ◽  
pp. 1146-1150
Author(s):  
Rafael V Santos ◽  
Gilberto Fontes ◽  
Iasmin A C Duarte ◽  
José A. Santos-Júnior ◽  
Eliana M M Rocha

Introduction: A cross-sectional study was carried out to assess the prevalence of E. histolytica and E. dispar by examining stool samples obtained from 1,003 students of public schools in Maceió, Alagoas, Brazil. Methodology: All stool samples were processed using the spontaneous sedimentation technique and examined microscopically for the presence of Entamoeba species. In order to distinguish infections caused by E. histolytica, fecal samples presenting cysts of Entamoeba were subjected to specific enzyme-linked immunosorbent assay (ELISA) and polymerase chain reaction (PCR). Results: The analysis of the fecal specimens by microscopy identified 6.4% (64/1,003) students positive for E. histolytica/E. dispar/E. moshkovskii cysts. The prevalence of E. histolytica detected by ELISA was 3.0% (30/1,003) and by PCR 2.8% (28/1,003), but the difference is not statistically significant (p > 0.05). The prevalence of E. dispar in schoolchildren was 5.0% (50/1,003). Mixed infections with E. histolytica and E. dispar were also detected by PCR.  Even though immunological and molecular methods have shown similar results for identification of E. histolytica, ELISA is advantageous over the PCR since it is relatively cheaper and easier to perform. Conclusions: Our study demonstrated the occurrence of E. histolytica in Maceió and highlights the need to introduce a specific diagnostic test to detect amoebiasis cases in public laboratories.


2019 ◽  
Vol 31 (1) ◽  
pp. 87-92

Rotaviruses are regarded as the most common cause of viral gastroenteritis and are responsible for considerable morbidity and mortality among children especially under five years of age worldwide. In developing countries like Myanmar, where diarrhoea is in the priority childhood disease, rotavirus surveillance and detection of rotavirus genotypes are utmost important. A hospital-based, cross-sectional descriptive study was conducted at Yangon Children‟s Hospital among under five children admitted for acute diarrhoea from January to October 2016. This study includes detection of Group A rotavirus antigen by commercial enzyme-linked immunosorbent assay (ELISA) and genotyping by multiplex RT-PCR. From a total of 488 collected samples, rotavirus antigen was detected in 219 samples (45%). Rotavirus diarrhoea was most common among the age of 6-11 months (38.8%) followed by 12-23 months (37.9%). The results showed that boys were more commonly affected than girls. Detection of rotavirus positivity was peak in February (57.6 %). Out of 219 stool samples with positive ELISA result, 40 stool samples with high optical density value were proceeded for further determination of G and P genotypes. Regarding distribution of G genotypes, the most common G genotype was G9 which comprised 45%, and that of P genotype was P[8] which comprised 92.5%. Regarding combination of G and P genotypes, the most frequent combination is G9P[8], and it constituted 42.5%. Untypable genotypes were seen in 30% of G and 2.5% of P typing. As rotavirus infection can be prevented by vaccine, WHO recommended that rotavirus vaccination should be included in national immunization program especially in countries where prevalence of rotavirus is high. The distribution of G and P genotypes is important in consideration of appropriate vaccine in pre-vaccination and evaluation of effectiveness of vaccine in post-vaccination period. Therefore, the information on currently circulating genotypes of rotavirus in this study will serve as valuable data for vaccination programme.


2020 ◽  
Vol 21 (5) ◽  
pp. 497-506
Author(s):  
Mayck Silva Barbosa ◽  
Bruna da Silva Souza ◽  
Ana Clara Silva Sales ◽  
Jhoana D’arc Lopes de Sousa ◽  
Francisca Dayane Soares da Silva ◽  
...  

Latex, a milky fluid found in several plants, is widely used for many purposes, and its proteins have been investigated by researchers. Many studies have shown that latex produced by some plant species is a natural source of biologically active compounds, and many of the hydrolytic enzymes are related to health benefits. Research on the characterization and industrial and pharmaceutical utility of latex has progressed in recent years. Latex proteins are associated with plants’ defense mechanisms, against attacks by fungi. In this respect, there are several biotechnological applications of antifungal proteins. Some findings reveal that antifungal proteins inhibit fungi by interrupting the synthesis of fungal cell walls or rupturing the membrane. Moreover, both phytopathogenic and clinical fungal strains are susceptible to latex proteins. The present review describes some important features of proteins isolated from plant latex which presented in vitro antifungal activities: protein classification, function, molecular weight, isoelectric point, as well as the fungal species that are inhibited by them. We also discuss their mechanisms of action.


2021 ◽  
Vol 9 ◽  
pp. 251513552110158
Author(s):  
Abdoulreza Esteghamati ◽  
Shirin Sayyahfar ◽  
Yousef Alimohamadi ◽  
Sarvenaz Salahi ◽  
Mahmood Faramarzi

Background: Whole-cell pertussis (wP) vaccine administration is still advocated for children under 7 years of age in Iran. However, there is no recommendation for the administration of a dose of tetanus, diphtheria, and acellular pertussis (Tdap) vaccine to childbearing age/pregnant women in the Iranian vaccination program and it has increased the risk of infection through waning immunity during women’s childbearing age life. The study aimed to assess the levels of anti- Bordetella pertussis antibodies in childbearing age women of different ages in Iran. Methods: A cross-sectional study was conducted on a total number of 360 childbearing age women divided into six age groups, with 5-year intervals from 15 to 45 years old, in 2018–2019. Then, the levels of immunoglobulin A (IgA), immunoglobulin M (IgM), and immunoglobulin G (IgG) antibodies against B. pertussis were evaluated using enzyme-linked immunosorbent assay (ELISA). The IBM SPSS Statistics software (version 16.0) (SPSS Inc., Chicago, IL, USA) was used for data analysis. Results: The mean age of the participants was 30.01 ± 8.35 years (range 14–45 years). All the cases were IgM negative, but two IgA-positive individuals (in the age groups of 14–19 and 30–34 years) were reported. Overall, 239 (66.4%) cases were IgG positive. The mean age of IgG-positive cases was 30.37 ± 8.37 years. The IgG-positive cases were mostly in the age groups of 30–34 and 35–39 years [43 (71.1%)]. The odds of IgG positivity were 1.97. The highest odds of IgG positivity were seen in 30–34 and 35–39 years groups (2.52) and the lowest odds were seen in the 20–24 and 25–29 years groups (1.60). Using the Jonckheere–Terpstra test, the increasing trend of IgG changes in different age groups was not statistically significant (Tπ=5.78, p = 0.09). Conclusion: The infants of women of childbearing age might be prone to pertussis in countries using the wP vaccination schedule. It is suggested to administer a dose of Tdap to women before or during pregnancy to increase the immunity of their infants against this disease during early infancy.


Angiology ◽  
2021 ◽  
pp. 000331972110043
Author(s):  
Clemens Höbaus ◽  
Gerfried Pesau ◽  
Bernhard Zierfuss ◽  
Renate Koppensteiner ◽  
Gerit-Holger Schernthaner

We evaluated angiogenin as a prospective biomarker in peripheral artery disease (PAD) patients with and without claudication symptoms. A pilot study suggested an elevation of angiogenin in critical limb ischemia. However, in PAD patients, the predictive value of angiogenin has not yet been evaluated. For this purpose, 342 patients with PAD (age: 69 ± 10 years, 34.5% women) were followed-up for 7 years in a cross-sectional study. Angiogenin was measured by enzyme-linked immunosorbent assay. All-cause and cardiovascular mortality were analyzed by Cox regression. Angiogenin levels were higher in men ( P = .001) and were associated with patient waist-to-hip ratio ( P < .001), fasting triglycerides ( P = .011), and inversely with estimated glomerular filtration rate ( P = .009). However, angiogenin showed no association with age, characteristics of diabetes, markers of lipid metabolism, or C-reactive protein. Angiogenin did not correlate with markers of angiogenesis such as vascular endothelial growth factor, angiopoietin-2, or tie-2. Furthermore, angiogenin was not associated with PAD Fontaine stages or with patient ankle-brachial index in addition to all-cause mortality (hazard ratio [HR] = 1.09 [95% CI: 0.89-1.34]) or cardiovascular morality (HR = 1.05 [0.82-1.35]). These results suggest that angiogenin does not provide further information regarding outcome prediction in patients with PAD.


Viruses ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 838
Author(s):  
Bryony A. Jones ◽  
Mana Mahapatra ◽  
Daniel Mdetele ◽  
Julius Keyyu ◽  
Francis Gakuya ◽  
...  

Peste des petits ruminants (PPR) is a viral disease of goats and sheep that occurs in Africa, the Middle East and Asia with a severe impact on livelihoods and livestock trade. Many wild artiodactyls are susceptible to PPR virus (PPRV) infection, and some outbreaks have threatened endangered wild populations. The role of wild species in PPRV epidemiology is unclear, which is a knowledge gap for the Global Strategy for the Control and Eradication of PPR. These studies aimed to investigate PPRV infection in wild artiodactyls in the Greater Serengeti and Amboseli ecosystems of Kenya and Tanzania. Out of 132 animals purposively sampled in 2015–2016, 19.7% were PPRV seropositive by ID Screen PPR competition enzyme-linked immunosorbent assay (cELISA; IDvet, France) from the following species: African buffalo, wildebeest, topi, kongoni, Grant’s gazelle, impala, Thomson’s gazelle, warthog and gerenuk, while waterbuck and lesser kudu were seronegative. In 2018–2019, a cross-sectional survey of randomly selected African buffalo and Grant’s gazelle herds was conducted. The weighted estimate of PPRV seroprevalence was 12.0% out of 191 African buffalo and 1.1% out of 139 Grant’s gazelles. All ocular and nasal swabs and faeces were negative by PPRV real-time reverse transcription-polymerase chain reaction (RT-qPCR). Investigations of a PPR-like disease in sheep and goats confirmed PPRV circulation in the area by rapid detection test and/or RT-qPCR. These results demonstrated serological evidence of PPRV infection in wild artiodactyl species at the wildlife–livestock interface in this ecosystem where PPRV is endemic in domestic small ruminants. Exposure to PPRV could be via spillover from infected small ruminants or from transmission between wild animals, while the relatively low seroprevalence suggests that sustained transmission is unlikely. Further studies of other major wild artiodactyls in this ecosystem are required, such as impala, Thomson’s gazelle and wildebeest.


2021 ◽  
pp. 194589242098743
Author(s):  
Nyssa F. Farrell ◽  
Jess C. Mace ◽  
David A. Sauer ◽  
Andrew J. Thomas ◽  
Mathew Geltzeiler ◽  
...  

Background Chronic rhinosinusitis (CRS) is often differentiated by histopathologic phenotypes (eosinophilic versus neutrophilic), which may impact disease severity measures and outcomes. As such, it has been suggested that counts of cellular elements be included as part of a standard pathological report following endoscopic sinus surgery (ESS). Objectives This cross-sectional study evaluated associations of mucosal eosinophilia and neutrophilia with measures of quality-of-life (QoL) and olfactory function. Methods Patients with medically refractory CRS completed the SNOT-22 survey and Brief Smell Identification Test (BSIT) at enrollment. In addition, baseline Lund-Mackay computed tomography (CT) and Lund-Kennedy endoscopy scores were collected. Ethmoid mucosa was biopsied during ESS and reviewed using microscopy to quantify densest infiltrate of eosinophils or neutrophils per high-powered-field (HPF). Eosinophilic CRS (eCRS) and neutrophilic CRS (nCRS), both with and without nasal polyposis (NP), were compared across SNOT-22 and BSIT scores. Results 77/168 patients demonstrated mucosal eosinophilia (eCRS) while a total of 42/168 patients demonstrated mucosal neutrophilia (nCRS). After adjusting for polyp status, 35/168 had eCRSsNP, 42/168 eCRSwNP, 75/168 non-eCRSsNP, 16/168 non-eCRSwNP. Additionally, 22/161 were noted to have nCRSsNP, 20/161 nCRSwNP, 84/161 non-nCRSwNP, and 35/161 non-nCRSsNP. A small subset of patients demonstrated both eosinophilia and neutrophilia: 14 CRSwNP and 7 CRSsNP. When evaluating average Lund-Mackay Scores (LMS), significant differences existed between non-eCRSsNP and eCRSsNP (p = 0.006). However, after controlling for nasal polyps, eosinophilia did not significantly associate with differences in the Lund-Kennedy Score. Neutrophilia did not significantly associate with any changes in LMS or LKS after controlling for NP. Eosinophilic and neutrophilic histopathologic subtypes did not significantly associate with differences in baseline SNOT-22 or BSIT measures after controlling for NP. Conclusion Neither the presence of mucosal eosinophilia nor mucosal neutrophilia demonstrated significant associations with SNOT-22 quality-of-life or BSIT olfactory function scores when controlling for comorbid nasal polyposis.


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