Zamoření bytu štěnicemi - pozor na histamin

  • Posted on: 2 February 2022
  • By: admin
štěnice a histamin

Pokud štěnice napadnou váš byt, čeká vás nelehký úkol jak se jich zbavit. 

Štěnice domácí se množí velmi rychle, ve dne je prakticky neaktivní, v noci když lidé a domácí zvířata spí se vydávají na "výpravu" za krví.

Má se za to, že některé druhy štěnic by mohly přenášet např. bakterii Trypanosoma cruzi (původce Chagasovy choroby) případně bakterii Bartonella quintana (původce tzv. Zákopové horečky). Toto tvrzení se ovšem laboratorně nepotvrzuje.
Kousnutí a následné sání krve od štěnice ovšem způobuje různé závažné dermatitidy (kožní onemocnění) v reakci na přítomnost proteinu nitroforin ve slinách štěnic, který zabraňuje krevním destičkám ve srážení krve.

trus štěnic obsahuje velké množství histaminu

Některé studie tohoto nepříjemného parazita nyní ukazují na další problém, který vzniká po zamoření obydlí štěnicemi.
Vědci zjistili, že trus štěnic, který se běžně, při jejich výskytu, objevuje na místech, kde štěnice sají krev, nebo se zdržují, obsahuje velké množství hormonu (protein) histamin.
Histamin je u citlivých jedinců spouštěč nejrůznějších akutních zánětlivých reakcí jako je např. kopřivka, bušení srdce, průjem, anafylaktický šok, respirační potíže apod.

Vědci učinili pokus a na vzorku bytů z nichž některé byly zamořeny štěnicemi, jiné nezamořeny odebrali vzorky prachu v místnostech. Tyto vzorky potom testovali na zvýšenou přítomnost histaminu.
Výsledkem jejich zkoumání bylo, že byty, v kterých se štěnice nevyskytovaly obsahovaly stopové množství histaminu, pro člověka nepostřehnutelné.
V bytech, kde se štěnice vyskytovaly byly nameřeny hodnoty histaminu v průměru více než 54 μg/100 mg prachu. Toto množství je srovnatelné s uvádením množstvím histaminu v kysaném zelí, které se nedoporučuje při histaminové intoleranci konzumovat.
Vzorky prachu použité jako vzorek byly jemně prosáté a dá se tedy říct, že histamin se vyskytuje v tak jemné podobě, že jde prakticky o poletavý prach, který je velmi snadné vdechovat.

Na závěr vědci upozornili na fakt, že histamin se v této koncentraci v bytech vyskytoval i po dezinsekci prováděné vysokou teplotou - nad 50°C. Ani to nevedlo ke snížení jeho množství. Další poměrně důležitá věc je, že histamin je velmi stálý a ani po měsících nedochází k jeho degradaci.

zdroj:DeVries ZC, Santangelo RG, Barbarin AM, Schal C (2018) Histamin jako emergentní vnitřní kontaminant: Akumulace a perzistence v domácnostech zamořených štěnicemi. PLoS ONE 13(2): e0192462. https://doi.org/10.1371/journal.pone.0192462
 

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If you’re making an attempt to construct muscle and get
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Reaching hypertrophy includes a mixture of effective exercises,
recovery, and diet. Nevertheless, research which have
investigated the continual results of drop sets didn't show a superior
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Motion tempo is a crucial variable to be taken under
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Though within the first repetitions of a set a stipulated
cadence can be met, sustaining a specific tempo and focusing the attention on it might possibly have an effect on the quality of the set
when proximity to failure is approaching [104].
"So you might not see as many advantages as somebody who’s sleeping more and less stressed," she
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So if you wish to make your booty look larger and more defined—or you just need to get match and
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Hypertrophy also can happen in tissues or organs in response to
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or pathological situations. Hypertrophy refers to a rise in muscular measurement achieved through train. When you're employed out, if you wish to tone or improve muscle definition, lifting weights is the most
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growth. Protein is made up of building blocks
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is recommended to provide energy to maximise coaching efficiency,
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Doing a workout for 20 to half-hour two or 3 times per week
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It additionally requires maximal effort, which locations important calls for on neural effectivity and coordination. These intense lifts
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Exercises targeted to promote mobility and suppleness can help to
enhance the pliability of the shoulder joint. Your capacity to hold
out routine duties and activities without experiencing ache might improve consequently.
Exercising&nbsp;can&nbsp;help&nbsp;lessen&nbsp;shoulder&nbsp;tendonitis&nbsp;ache&nbsp;when&nbsp;accomplished&nbsp;correctly&nbsp;
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They had been about performing each repetition with a perfect
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Strive these supersets under and you’ll be firing up your shoulders very quickly.
Strong shoulders, robust presenceBroad, outlined shoulders don’t just look
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If you take a glance at any energy athlete competing at a world-class level, you'll notice important mid- and higher back development.
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