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Tytuł:
The effects of pesticides on respiratory system
Autorzy:
Tsaloglidou, A.
Powiązania:
https://bibliotekanauki.pl/articles/1918886.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Medyczny w Białymstoku
Tematy:
Pesticides
respiratory system
Opis:
Introduction: Most of the pesticides have, by nature, some degree of toxicity because they are intended to kill certain organisms and thus create a risk of damage. The use of pesticides has raised serious concerns, mainly about the potential effects on human health and especially on respiratory system. Thousands of people (from 20,000 to 220,000) lose their life due to pesticide poisoning. Ninety nine percent of them (99%) live in developing countries. Purpose: To review the literature, to identify the harmful effects of pesticides on human health, and particularly on the respiratory system, and to define the ways of dealing with them. Materials and methods: Extensive review of the relevant literature was performed via electronic databases (Medline, Pubmed, Cihnal and Google scholar) and scientific journals (Greek and international) using the appropriate key words: pesticides, respiratory symptoms, pulmonary disease and a combination of them. Results: The effects on human health due to exposure to pesticides depend on a number of factors, including the category of pesticides involved, the amount and type of active substance, as well as their form, route of contamination, exposure time and pesticides' residual dose. Pesticides, especially those that inhibit the action of cholinesterase, lead to the onset of respiratory symptoms. A number of respiratory symptoms and diseases have been associated with occupational pesticide exposures, such as wheezing, asthma cough, phlegm, dyspnoea and influenza like syndrome are reported especially among agricultural workers. Conclusions: Pesticides are dangerous substances for the human body and especially for the respiratory system, if they are used without control. Proper use of pesticides can ensure both the quality of the environment and citizen's safety and health. New scientific data require periodic review of safety levels.
Źródło:
Progress in Health Sciences; 2019, 2; 48-52
2083-1617
Pojawia się w:
Progress in Health Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the impact of harmful factors in the workplace on functioning of the respiratory system of firefighters
Autorzy:
Witt, Magdalena
Goniewicz, Mariusz
Pawłowski, Witold
Goniewicz, Krzysztof
Biczysko, Wiesława
Powiązania:
https://bibliotekanauki.pl/articles/990849.pdf
Data publikacji:
2017
Wydawca:
Instytut Medycyny Wsi
Tematy:
firefighters
occupational environment
respiratory system
biological test
pathomorphologiae
Opis:
Introduction and objective. Firefighters are considered a healthy and fit group of individuals, well-prepared for taking action in disaster situations. While working, they suffer from exposure to certain toxic agents, especially combustion products generated when a fire takes place. Among them, the most frequent and the most toxic are: carbon monoxide, hydrogen cyanide, ammonia, and those resulting from PVC combustion – hydrochloride, phosgene and chloride. Additionally, fireextinguisher powder can be inhaled and lead to certain lesion in the airways. The aim of study was to ascertain the influence of toxic agents present at the scene of fire on the lung tissue of firefighters, and also to study this on an animal model. Materials and methods. The study group consisted of firefighters who had a minimum of 10 years service. After completing a questionnaire, their clinical status was ascertained based on a general examination, laboratory tests and lung function tests. Results. Questionnaire analysis showed a high percentage of pathological symptoms in the studied group. The incidence of the symptoms correlated with the duration of occupational exposure to toxic agents. Among other results, obstruction of flow in medium airways in about 30% of the studied individuals represented the most important finding. Experimental tests were next performed on male Wistar rats, aged 3 months. They were insufflated with the solution of powdered fire-extinguisher, after which morphology specimens of lung tissue were studied. Evidence for disseminated fibrosis was obtained, which supported the previous clinical findings in the firefighters. Conclusion. The above shows correlation between occupational exposure and respiratory system involvement in firefighters. This justifies covering the group of firefighters with special medical care focused on prophilaxis, early detection and therapy of pulmonary diseases.
Źródło:
Annals of Agricultural and Environmental Medicine; 2017, 24, 3
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of air pollution on the respiratory system in preschool children with contribution of urban heat islands and geographic data – the aim of the study and methodological assumptions
Autorzy:
Bobrowska-Korzeniowska, Monika
Jerzyńska, Joanna
Polańska, Kinga
Kaleta, Dorota
Stelmach, Iwona
Kunert, Agata
Stelmach, Włodzimierz
Powiązania:
https://bibliotekanauki.pl/articles/2086575.pdf
Data publikacji:
2021-08-05
Wydawca:
Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:
children
air pollution
allergy
PM
VOC
respiratory system
Opis:
It has been proven that outdoor and indoor air pollutants can cause adverse health effects and are able to promote the onset of atopic diseases. The current manuscript is focused on methodological issues. The aim of the study is to determine the effect of air pollution, urban environment, and urban heat islands (UHIs) on the occurrence of respiratory diseases including allergic rhinitis, asthma and wheezing in preschool children. The study group consists of 276 five-year-old children attending randomly selected kindergartens in the urban and rural areas of the Łódź Voivodeship. The questionnaire including data on the child’s state of health and socio-economic data will be filled by the caregivers. The children will undergo skin prick testing and the measurement of volatile organic compounds in exhaled breath. The key components of air pollution – particulate matter (PM) will be measured by personal meters. The PM sampling planned in the study will take 12 h for PM2.5 and for PM10 alike. Data on the level of outdoor air pollution will be collected based on the results obtained from air monitoring stations. The impact of air pollution, UHIs and the environment on the respiratory system and the presence of allergies in children, including chronic respiratory diseases, will be assessed. The project results will provide a scientific basis for the development of preventive programs in the population of children in the Łódź Voivodeship, adapted to the real health needs of society.
Źródło:
International Journal of Occupational Medicine and Environmental Health; 2021, 34, 4; 453-460
1232-1087
1896-494X
Pojawia się w:
International Journal of Occupational Medicine and Environmental Health
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
‘Smoging kills’ - effects of air pollution on human respiratory system
Autorzy:
Grzywa-Celińska, A.
Krusiński, A.
Milanowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/2085457.pdf
Data publikacji:
2020
Wydawca:
Instytut Medycyny Wsi
Tematy:
air pollution
particulate matter
respiratory system
lung disease
Opis:
Atmospheric pollution suspended in humid air is popularly known as ‘smog’. It is composed of dust particles of different sizes, as well as non-metal oxides, organic compounds, and heavy metals. Exposure to harmful substances suspended in the air – apart from, for example – smoking cigarettes, one of the modifiable factors leading to the development of respiratory diseases. There are six types of substances present in the air that have a negative impact on public health and result in significant consequences: ozone, particulate matter (PM) of different diameters – PM2.5µ, PM2.5–10 µ, PM10 µ, nitrogen dioxide, sulphur dioxide, carbon monoxide and lead. Particular attention is given to small dust particles (PM10 and PM2.5) because they can penetrate into the lower respiratory tract. Apart from describing the composition of smog and sources of air pollution, the article also discusses the impact of atmospheric pollutants on both development and aggravation of the symptoms of such respiratory tract diseases as asthma, chronic obstructive pulmonary disease, respiratory infections and lung cancer. Some of legal measures applied in different countries aimed at reducing exposure to noxious air pollutants are reviewed. The authors believe that the increased focus on risks arising from inhaling toxic air pollution may be a first step for developing systemic solutions aimed at resolving or, at least, decreasing those risks.
Źródło:
Annals of Agricultural and Environmental Medicine; 2020, 27, 1; 1-5
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
AN INTEGRAL ESTIMATION OF THE FUNCTIONAL STATUS OF THE EXTERNAL RESPIRATORY SYSTEMS OF QUALIFIED FUTSAL PLAYERS
Autorzy:
Guba, V. P.
Skorovich, S. L.
Marinich, V. V.
Stuła, A.
Powiązania:
https://bibliotekanauki.pl/articles/1202491.pdf
Data publikacji:
2015
Wydawca:
Politechnika Opolska. Wydział Wychowania Fizycznego i Fizjoterapii
Tematy:
futsal
functional status
external respiratory system
elite athletes
Opis:
The purpose of the study was to analyze index changes of the flow-volume curve during training of elite futsal players. The conducted monitoring of respiration rates shows multidirectional responses of bronchial tubes of the respiratory system, vegetative nervous system, local cell and humoral factors. The orientation of the processes to adaptation and enhancement of the oxygen transport function at submaximal loads is developed in the opposite direction among 15% of the subjects, which can result in limiting the effect of bronchismus, edema and mucus hypersecretion to the oxygen delivered to the alveolus and ultimately, decrease physical working capacity. The dynamic monitoring of the training process when estimating the flow-volume curve indices ensures (especially in youth team players) early detection and correction of exercise-induced bronchospasm, specifying its etymology and making an early diagnosis and pharmacological intervention, that makes training and competitive processes more efficient.
Źródło:
Journal of Physical Education & Health - Social Perspective; 2015, 4, 6; 37-41
2084-7971
Pojawia się w:
Journal of Physical Education & Health - Social Perspective
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cardiopulmonary exercise test performed on a football player: a case report
Autorzy:
Wołoszyn, Filip
Powiązania:
https://bibliotekanauki.pl/articles/454803.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Rzeszowski. Wydawnictwo Uniwersytetu Rzeszowskiego
Tematy:
capacity
circulatory system
CPET, effort
endurance
football
RAMP
respiratory system
Opis:
Introduction. Cardiopulmonary Exercise Test (CPET) can precisely determine aerobic capacity, conjugate and independent functions of the pulmonary cardiovascular, and skeletal muscle systems. Aim. To describe CPET feedback from a high stamina professional football player. Description of the case. The test took place in course of one CPET session. The method of an individual case study was used in this research. The participant was a local team football player. According to the coaches’ opinion, this player had the best ability to perform long distance work. The test was performed using a cycle ergometer. Cardiopulmonary Exercise Test was performed with a cycle ergometer RAMP test. Conclusion. The player’s capacity is at a level that allows us to outline his results as a unique case.
Źródło:
European Journal of Clinical and Experimental Medicine; 2019, 1; 101-104
2544-2406
2544-1361
Pojawia się w:
European Journal of Clinical and Experimental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Choroby układu oddechowego – jak poprawić dostępność i wyniki leczenia?
Diseases of the Respiratory System – Ways to Improve Access to and Results of Treatment
Autorzy:
Wasilewski, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/416798.pdf
Data publikacji:
2017-04
Wydawca:
Najwyższa Izba Kontroli
Tematy:
diseases of the respiratory system
chronic lung diseases
respiratory tract
smoking
healthcare
Opis:
According to epidemiological forecasts, the incidence and mortality related to chronic diseases of the respiratory tract will be increasing systematically due to, among others, the growing number of persons above the age of 65, the pollution of the natural environment and smoking. In the opinion of the World Health Organisation, smoking is the main reason for diseases associated with the progress of civilisation, closely related to the respiratory tract. The Supreme Audit Office, taking the above factors into account, conducted the first coordinated audit in this area.
Źródło:
Kontrola Państwowa; 2017, 62, 2 (373); 72-81
0452-5027
Pojawia się w:
Kontrola Państwowa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelowanie stanu mechaniki układu oddechowego u osób otyłych
Modeling of respiratory mechanics in obesity
Autorzy:
Redlarski, G.
Jaworski, J.
Powiązania:
https://bibliotekanauki.pl/articles/155321.pdf
Data publikacji:
2013
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
nadwaga
otyłość
mechanika układu oddechowego
układ oddechowy
obesity
respiratory mechanics
respiratory system
Opis:
Przedmiotem publikacji jest przedstawienie propozycji modelowania i zasad wizualizacji zmian w mechanice układu oddechowego, u osób z nadwagą lub otyłością. W badaniach wykorzystano 16-elementowy model elektryczny układu oddechowego. Dobór wartości parametrów modelu odbywał się na podstawie wiedzy dostępnej w literaturze medycznej. Opracowanie może być szczególnie przydatne inżynierom dokonującym wstępnej weryfikacji nowo opracowywanych systemów medycznych lub na etapie dokonywania przeglądów okresowych aparatury medycznej.
The subject of the publication is a proposal of approach to modeling and visualization of changes in pulmonary mechanics, for people impaired by obesity or serious overweight. Previously developed models of the patient respiratory system were based on parameter identification of the considered models with the help of the measured data [3]. In this paper the modeling procedures basing on the basic medical knowledge in the field of clinical obesity (BMI> 35) are proposed. In the research a 16-coefficient electrical model of the respiratory system (Fig. 1), presented previously in [8], was used Most of lesions causing the changes in parameter values, described in Section 2, simulate the changes in mechanics of respiratory tract and lungs. The range and nature of the changes in the model parameter values are the subject of Section 3. The results of simulations of the respiratory volume (Fig. 3) and the flow (Fig. 4) are presented in Section 4. Moreover, the result of respiratory mechanics examination obtained by FOT is shown in Fig. 6. The presented time courses are consistent with the results available in the medical literature, obtained as a result of the medical examinations (Fig. 5). That proves the legitimacy of the presented approach and demonstrates the functionality of lesions modeling based on basic medical knowledge. This approach may be particularly useful for engineers providing preliminary verification of newly developed medical systems or at the stage of servicing the medical equipment.
Źródło:
Pomiary Automatyka Kontrola; 2013, R. 59, nr 3, 3; 266-269
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The impact of the position of the head on the functioning of the human body: a systematic review
Autorzy:
Szczygieł, Elżbieta
Fudacz, Natalia
Golec, Joanna
Golec, Edward
Powiązania:
https://bibliotekanauki.pl/articles/2116542.pdf
Data publikacji:
2020-09-17
Wydawca:
Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:
balance disorders
forward head posture
head
respiratory system
proprioception
neck
Opis:
The head is an important element of the biokinetic chain. Under physiological conditions, it should extend along the midline of the body. Due to its location and the fact that it constitutes approx. 6% of the total body weight, many authors believe it has a significant impact on its functioning. The aim of this study was to conduct a systematic literature search and to synthesize the evidence of the impact of the head posture on the functioning of the human body. A systematic review was conducted within 3 databases: PubMed, Medline OVID, and EBSCO, using the following terms: “forward head,” “posture,” “position,” and “neck.” For the analysis, scientific articles published after 2013 were selected. A total of 16 studies matched the inclusion criteria of this systematic review. Their results have proven that the position of the head has a significant effect on the human body. Research findings show that abnormal head position changes affect muscle activity, proprioception, the pattern of breathing and neck pain. This is the first systematic review of the relationship between the head posture, and the functioning of the human body. The results of this study seem to be promising if used in therapeutic practice.
Źródło:
International Journal of Occupational Medicine and Environmental Health; 2020, 33, 5; 559-568
1232-1087
1896-494X
Pojawia się w:
International Journal of Occupational Medicine and Environmental Health
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Seroprevalence of Bordetella pertussis antibodies among a group of young adults
Autorzy:
Skiba, A.
Raman, S.
Rzucidlo, I.
Sereda, D.
Koziol, M.M.
Powiązania:
https://bibliotekanauki.pl/articles/2098551.pdf
Data publikacji:
2021
Wydawca:
Instytut Medycyny Wsi
Tematy:
seroprevalence
Bordetella pertussis
antibody
pertussis
respiratory system
adolescent
young adult
Opis:
Introduction. Bordetella pertussis is a Gram-negative rod which attacks the respiratory system and causes whooping cough disease. Despite the high percentage of childhood vaccination amongst the population an increasing number of pertussis cases have been observed over time, especially among adolescents and young adults. Objective. The aim of the study was to analyze the concentration of IgG anti-PT Bordetella antibodies in the serum of young adults in the aspect of maintaining immunity. Materials and method. The study group consisted of 30 patients, medical students aged 21–26 years. They were interviewed with a questionnaire, which asked about their general health, medications taken, basic information about whooping cough, or vaccination status against B. pertussis. The anti-PT Bordetella levels were measured in the collected serum by a commercial ELISA kit (enzyme-linked immunosorbent assay). Results. All patients had previously received a mandatory vaccination for pertussis as a child, and 36.6%had received a booster dose after the age of 18. The total average antibody level was 13.977 IU/mL (range: <5.00 – 50.74) and 40% of samples had a very low concentration (<5 IU/mL). Conclusions. Current findings suggest that post-vaccine immunity decreases over time, while infection susceptibility among younger age groups who have not yet been fully immunized has increased. Methods that could prevent and enable risk stratification of whooping cough include the screening test for anti-PT Bordetella antibody, the improvement of diagnostics, and an additional booster dose.
Źródło:
Journal of Pre-Clinical and Clinical Research; 2021, 15, 3; 126-128
1898-2395
Pojawia się w:
Journal of Pre-Clinical and Clinical Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Yeast-like fungi isolated in students
Grzyby drożdżopodobne izolowane od studentów
Autorzy:
Biedunkiewicz, A.
Powiązania:
https://bibliotekanauki.pl/articles/67825.pdf
Data publikacji:
2007
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
yeast-like fungi
fungi
isolation
student
respiratory system
human infection
Opis:
The occurrence of yeast-like fungi in the most important infection portals of the respiratory system in 200 randomly chosen students of biology and veterinary medicine was examined. The students come into direct contact with plants and animals that may be colonised by fungi belonging to various systematic groups. nine species of yeast-like fungi, including 7 species determined in the biologists, were recorded in the subjects. Candida tropicalisand C.albicanswere the most frequently isolated fungi. The greatest number of fungi was isolated from the oral cavity (124 isolates), fewer from the throat (79 isolates), and the smallest number from the nose (8 isolates). Fungi occurred more frequently in autumn and slightly less frequently in spring, and were isolated more frequently from women than from men.
W pracy przeanalizowano występowanie grzybów drożdżopodobnych w głównych wrotach zakażenia układu oddechowego, dwustu losowo wybranych studentów biologii i medycyny weterynaryjnej, mających w trakcie studiów bezpośredni kontakt z roślinami i zwierzętami, które mogą być zasiedlane przez grzyby z różnych grup systematycznych. W przeprowadzonych badaniach u wszystkich studentów stwierdzono 9 gatunków grzybów drożdżopodobnych, z czego 7 u biologów. Najczęściej izolowano: Candida tropicalis(83 izolaty) i Candida albicans (77 izolatów). Najwięcej grzybów wyizolowano z jamy ustnej (124 izolaty), mniej z gardła (79), najmniej z nosa (8). Grzyby częściej występowały jesienią, nieco rzadziej wiosną, u kobiet niż u mężczyzn. Ogółem najwyższy odsetek wyników dodatnich odnotowano u osób zgłaszających nadużywanie kawy (30%), palących papierosy (63,6%) i nadużywających alkoholu (51,7%). Izolowanie grzybów potencjalnie chorobotwórczych od zdrowych studentów wskazuje na obniżony stan ich odporności i skłania do położenia większego nacisku na analizy i badania mikologiczne w celu zwiększenia profilaktyki przeciwgrzybicznej w grupach osób zdrowych.
Źródło:
Acta Mycologica; 2007, 42, 1
0001-625X
2353-074X
Pojawia się w:
Acta Mycologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preliminary study to explore gene-$\text{PM}_\text{2.5}$ interactive effects on respiratory system in traffic policemen
Autorzy:
Zhao, Jinzhuo
Bo, Liang
Gong, Changyi
Cheng, Peng
Kan, Haidong
Xie, Yuquan
Song, Weimin
Powiązania:
https://bibliotekanauki.pl/articles/2177102.pdf
Data publikacji:
2015-08-07
Wydawca:
Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:
inflammation
Fine Particles
traffic workers
respiratory system
single nucleotide polymorphism
SNP
Opis:
Objectives Traffic-related particulate matter (PM) is one of the major sources of air pollution in metropolitan areas. This study is to observe the interactive effects of gene and fine particles (particles smaller than 2.5 μm – $\text{PM}_\text{2.5}$) on the respiratory system and explore the mechanisms linking $\text{PM}_\text{2.5}$ and pulmonary injury. Material and Methods The participants include 110 traffic policemen and 101 common populations in Shanghai, China. Continuous 24 h individual-level $\text{PM}_\text{2.5}$ is detected and the pulmonary function, high-sensitivity C-reactive protein (hs-CRP), Clara cell protein 16 (CC16) and the polymorphism in CXCL3, NME7 and C5 genes are determined. The multiple linear regression method is used to analyze the association between $\text{PM}_\text{2.5}$ and health effects. Meanwhile, the interactive effects of gene and $\text{PM}_\text{2.5}$ on lung function are analyzed. Results The individual $\text{PM}_\text{2.5}$ exposure for traffic policemen was higher than that in the common population whereas the forced expiratory volume in 1 s (FEV₁), the ratio of FEV₁ to forced vital capacity (FEV₁/FVC) and lymphocytes are lower. In contrast, the hs-CRP level is higher. In the adjusted analysis, $\text{PM}_\text{2.5}$ exposure was associated with the decrease in lymphocytes and the increase in hs-CRP. The allele frequencies for NME7 and C5 have significant differences between FEV₁/FVC ≤ 70% and FEV₁/FVC > 70% participants. The results didn’t find the interaction effects of gene and $\text{PM}_\text{2.5}$ on FEV₁/FVC in all the 3 genes. Conclusions The results indicated that traffic exposure to high levels of $\text{PM}_\text{2.5}$ was associated with systemic inflammatory response and respiratory injury. Traffic policemen represent a high risk group suffering from the respiratory injury.
Źródło:
International Journal of Occupational Medicine and Environmental Health; 2015, 28, 6; 971-983
1232-1087
1896-494X
Pojawia się w:
International Journal of Occupational Medicine and Environmental Health
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Local immunity of the respiratory mucosal system in chickens and turkeys
Autorzy:
Smialek, M.
Tykalowski, B.
Stenzel, T.
Koncicki, A.
Powiązania:
https://bibliotekanauki.pl/articles/31146.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
local immunity
respiratory system
mucosal immunity
chicken
turkey
bird
pathological condition
Opis:
This review article presents fundamental mechanisms of the local mucosal immunity in selected regions of the respiratory tract in healthy birds and in some pathological conditions. The respiratory system, whose mucosa come into direct contact with microorganisms contaminating inhaled air, has some associated structures, such as Harderian gland (HG), conjunctive-associated lymphoid tissue (CALT) and paranasal glands (PG), whose participation in local mechanisms of the mucosal immunity has been corroborated by numerous scientific studies. The nasal mucosa, with structured clusters of lymphoid tissue (NALT – nasal-associated lymphoid tissue) is the first to come into contact with microorganisms which contaminate inhaled air. Lymphoid nodules, made up of B cells with frequently developed germinal centres (GC), surrounded by a coat of CD4+ cells, are the major NALT structures in chickens, whereas CD8+ cells are situated in the epithelium and in the lamina propria of the nasal cavity mucosa. Studies into respiratory system infections (e.g. Mycoplasma gallisepticum) have shown the reactivity of the tracheal mucosa to infection, despite a lack of essential lymphoid tissue. Bronchus-associated lymphoid tissue (BALT) takes part in bronchial immune processes and its structure, topography and ability to perform defensive function in birds is largely age-dependent. Mature BALT is covered by a delicate layer of epithelial cells, called follicle-associated epithelium (FAE). Germinal centres (GC), surrounded by CD4+ cells are developed in most mature BALT nodules, while CD8+ lymphocytes are dispersed among lymphoid nodules and in the epithelium, and they are rarely present in GC. Macrophages make up the first line of defence mechanisms through which the host rapidly responds to microorganisms and their products in the respiratory mucosal system. Another very important element are polymorphonuclear cells, with heterophils being the most important of them. Phagocytic cells obtained from lung lavages in birds are referred to as FARM (free avian respiratory macrophages). Their number in chickens and turkeys is estimated to be 20 times lower than that in mice and rats, which indicates a deficit in the first-line of defence in the birds’ respiratory system. There are numerous B cells and antibody secreting cells (ASC) present throughout the respiratory system in birds. Their role comes down to perform antigen-specific protection by producing antibodies (IgM, IgY or IgA class) as a result of contact with pathogenic factors.
Źródło:
Polish Journal of Veterinary Sciences; 2011, 14, 2
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Immunological response in respiratory system of mice infected with Toxocara canis
Autorzy:
Machnicka, B.
Kapala, A.
Dziemian, E.
Boroskova, Z.
Powiązania:
https://bibliotekanauki.pl/articles/839209.pdf
Data publikacji:
1998
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
parasite
mouse
mice
clinical symptom
child
lung
respiratory system
Toxocara canis
Źródło:
Annals of Parasitology; 1998, 44, 3
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
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