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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Compound workout routines like bench presses, overhead
presses, pull-ups, and rows are effective for partaking a number of muscle groups simultaneously.
Isolation workouts, like bicep curls, concentrate on specific muscles
for targeted improvement. The barbell bench press is a great upper-body train to reinforce chest
muscle size and power. It offers a extra comprehensive exercise than isolation workout routines by focusing on the entire pectoral
area. Beyond building chest muscles, it successfully engages and strengthens the shoulders
and triceps, enhancing total upper body power and supporting joint well being.

With palms dealing with ahead, elevate the weights to shoulder top
and press them overhead one at a time while maintaining
management all through the motion. Compound actions permit you to hit a number of muscle teams at once, making it
simpler to load up on resistance and make those strength features.
For instance, a dumbbell bench press engages not just your pectoralis main but in addition triceps and
deltoids, giving these muscular tissues a complete exercise under numerous loads.
The movement may look much like the Arnold press, however pullovers change the attitude
and goal chest muscle tissue just like the pectoralis main as properly as the lats, which
are in your higher back. You want a flat bench for this train but
you’ll only want one dumbbell.
Double development, an easy methodology to include progressive overload into your coaching, is as simple as it
sounds. You operate within a programmed rep vary (say 8-10) by starting on the low finish and sustaining the identical weight until
you possibly can reach the highest of that rep vary. Once you've got achieved this for the
programmed number of sets, you increase the burden by a manageable 5 to 10 kilos and repeat the
process. The first train is a dumbbell incline bench press, targeting the higher (clavicular head) a half of the
chest. In my opinion, the dumbbell incline press is one of
the best upper chest movement. Using dumbbells requires
each side of the physique to work independently, which helps to establish
and proper imbalances between the left and proper sides.
Additionally, this ensures that both sides
of secondary higher body muscular tissues like the shoulders and triceps are equally
engaged and developed.
So, with out additional ado, let's get into some in style exercise splits for residence
dumbbell exercises. We Have written articles about residence fitness center gear and how
a lot it prices to construct your individual state-of-the-art house exercise area.
However in case you are seeking to drop some cash on one piece of exercise gear, you'd
be hard-pressed to find something better than some dumbbells (adjustable ones are even higher when you can afford them).

I extremely advocate incorporating some single-arm work
into your coaching alongside a mixture of two-arm work for a well-balanced coaching protocol.
Later on in this article, I will provide several sample workouts that implement a correct stability of single- and two-armed movements you must use.
Whereas dumbbell shapes and materials have modified, the
training methods and workouts have not, and dumbbells are
simply as efficient as they’ve always been. Lastly, adjust the weights in order that
your muscles fatigue within the prescribed rep range.

For balanced muscle growth and restoration, it’s usually best to train your upper body 2-3 instances per week.
This frequency permits for sufficient stimulation of all main muscle groups while offering sufficient recovery time between classes.
The Pendlay row is finest programmed for 5-8 reps with heavy hundreds to maximise energy and energy
within the posterior chain. Embrace this exercise in your training program for 4-6 weeks to considerably improve back
strength and explosive power. Carry Out seated cable rows for 8-12
reps with average to heavy masses, focusing on squeezing the back muscle tissue at every contraction.
Doing one arm at a time challenges your core as exhausting as
any ab exercise. The chest-supported dumbbell row is an efficient train for concentrating on the muscular tissues
of the upper again, including the rhomboids, trapezius, and latissimus dorsi.
This comprehensive targeting is why it’s probably the greatest dumbbell workout
routines in your back. The movement in the course of the overhead press encourages a full vary of movement in the
shoulder joints. When done with proper form,
this will contribute to improved joint well being and shoulder flexibility.
What makes them so efficient is that they allow you to
do top-tier exercises in your chest, again, shoulders, and arms.
They also allow you to prepare with heavy weights through long ranges of motion, making them perfect for gaining dimension and power.

This is the toughest position, with exception to the overhead grip position which is more of a speciality grip.
The racked position additionally offers you freedom of
movement, ROM and train selection, and you are capable of do it with two dumbbells (or one if you
want to problem your core more), which implies heavier loads.
The goblet position (at your heart in entrance of your chest) makes issues somewhat tougher as your core
must do extra work to maintain your physique upright, and your arms
to hold the kettlebell in position.

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