Bacterias: qué son y como se clasifican

Bacterias: qué son y como se clasifican


every day we ingest billions of
bacteria or even more almost all coming from food
but some also of our own mouth really each and every one of
we have an allocation of bacterial cells ten times greater than
the human ones to date we have benefited from the advantages that we
gives this microbiota more and more people take probiotics ie
bacteria that provide benefits specific to health if swallowed
in adequate amounts We would like to invite you to a trip and
show them the life of two probiotics different bacteria introduced in
the organism through a product fermented dairy run with me now
this trip through the intestinal tract and enter the world of probiotics
and the microbiota the yoghurt is composed of bacteria
called lactobacillus and streptococcus that are used to ferment milk
On the other hand some types of lactobacillus that are shown here as
blue appearance microorganisms cylindrical and bifidobacteria
microorganisms with and are selected probiotic bacteria that
provide health benefits in the mouth the bacteria live in the
gums teeth and tongue all people have a certain degree of plaque or
caries caused by different types of the so-called germs or bacteria
bad ones that grow rapidly and produce acids and enzymes from the
food that we eat especially sugar
the word bad really refers to the fact that these microbes can
damage our tissues or produce inflammation and a feeling of discomfort
the dental ppr eliminates sugars and many plaque bacteria but to
the few hours a recovery occurs and multiplication of the rest
the reason why the lactobacillus and bifidobacterium are usually known as
good bacteria is that it usually consider one what and contribute many
benefits for a healthy life between others the elimination or destruction of
oral bacteria in most cases the
microorganisms of the food it they mix inside the mouth and then
reach the transport to go to stomach the stomach is not a place
Particularly pleasant when we eat produces large amounts of acid that
protects our body and helps digest food the acid destroys
many bacteria that we eat included many of the enzymes in milk
present in dairy products however some bacteria like
probiotics lactobacillus and bifidobacterium survive the effects
of the acid thanks to a protective shield which is illustrated here in the form of halo
this protection confers it in milk and the food plus these probiotics
they immediately leave the stomach with liquid component of food
more than half of the world’s population and especially in the Asian continent
your stomach lodges a bacterium called ‘helicobacter pylori’ some strains of
this bacteria are pathogenic bacteria Acquires from different sources
for example, it is transmitted from contaminated water the bacteria can
plow the walls the tissue and produce easa and a toxin that damages the cells
causing painful ulcers and sometimes kánter the antibiotic treatment can
cure some cases of colonization by helicobacter but there are times that the
bacteria resists destruction or returns once the treatment is finished
the probiotic bacteria help reduce these helicobacter probably
attacking those with weapons similar to those antibiotics called bacteriocins or
well moving those from their place however to understand this process
more research is required the destroyed microorganisms the
Probiotic bacteria and microbes fermenters or survivors travel
the intestine and they come in contact with the bile salts that destroy many
of the fermenting microbes of the milk many probiotics resist
these harmful effects with what they survive and continue their journey
in the next stage the bacteria they reach the small intestine this region of the body usually has
a length of 9 meters and has structures called villi and
micro villi that absorb the nutrients contained in the food and
create an important defense against the disease
the small intestine houses thousands of millions of bacteria the microbiota
among other bifidobacteria and lactobacilli that
contribute decisively to our health by digesting food fight
the bad bacteria and modulate the immune response there are many aspects to be investigated
as the types of bacteria that live in the intestine the mode of communication
between them and the way in which we perceive and also if the probiotics
can prevent or alleviate certain diseases the body has complex
systems that monitor at all times what what happens around you and the
bacteria or molecules that cross it can detect microorganisms from
good nature but still segregates a antibody called igea secretory that
detects any bacteria or virus bad in the middle
If a person ingests too many bad bacteria at once for example
with a contaminated food the bacteria probiotics act in concert with the
intestinal defenses preventing the bad bacteria damage the host besides the secret daughter now the
organism possesses enzymes such as lysozyme tiny proteins and killer cells
that stop harmful bacteria the cells cal cifor mes and epithelial
of the small intestine produce mucus in addition to soluble factors called
glück or conjugates that participate in the intestinal defenses in this
illustration the intestine is found however inflamed the process of inflammation and the way in
which is combated by bacteria probiotic is not completely clear
but we will try to explain some parts of it with two diagrams
different in this diagram a section is shown
cross section of the mucosal epithelium and some m cells that are found by
first time with bacteria and viruses and they must decide if they are microbes
good or bad the m cells transport the bacteria
until the defensive lines of host among others the cells
dendritic macrophages t ive lymphocytes and cells
Plasma bacteria are detected by the presenter cells
antigens like dendritic cells who migrate and meet with the
t lymphocytes these mature after producing a response th 1
release of inflammatory cytokines and l8 or th 2 allergic reaction or just
transforming into lymphocytes t regulators maintenance of the
homeostasis when the host detects Probiotic or good bacteria
activate more regulatory t lymphocytes than encourage greater tolerance and
homeostasis reflected in the production of tgf beta and l10 many bacteria live in the micro
villi and some descend to the abyss to meet face to face
with the cells of breads epithelial cells that have
granules that contain large amounts of antimicrobial substances
natural as the so-called alpha and lysozyme defensins when the cells of loaves are
find the bad bacteria or the toxic substances produced by these
they emit a geyser that contains these granules the problem for the host arises
when a series of bad bacteria Adheres to the surface of the intestine
forming a biological film that is several layers of germs
bacteria try to dig a hole in the wall with what the
hobby is exposed to the risk of a more serious infection
It has been shown in various studies that some probiotic bacteria can
modify this process by resetting or maintain an intestinal barrier
tight and prevent bacteria bad invade the host the probiotic bacteria can be
multiply during your transit through the intestine some are left behind
for a few days but most continues his trip with the
Foods that continue their digestion during this process the host
get helpful substances like short chain fatty acids and also
waste you need break off
which crowd walled the intestine thick is covered by more than 500
species or different types of bacteria and the gases are produced by the
food fermentation people they release several liters of gas per day
and gases can be odorless or very bad smells depending on the food and
of the activated bacteria the intestine thick or colon as it is usually called
it contains very little oxygen so the most of the bacteria that live here
they are anaerobic the ability of bacteria to
perceive the environment is beginning to know now the microorganisms emit
molecular sensors and then they receive a information that warns them for example
of future dangers in this example the bad bacteria have
caused a crack in the wall of the colon it is believed that probiotic bacteria
can counteract some of the damage caused to the colon
even if you do not fully understand the mechanisms we represent them here by the
local recolonization by bacteria good and ingested probiotics that slow down diarrhea just when it seemed that the host was
had recovered a little lower in the colon bacteria arise called
salmon that are attacking the wall and multiply at a higher speed
that the other bacterial inhabitants the Salmonella has had to ingest itself
previous meal now and several hours and is producing a huge
discomfort to the host antibiotics are used in some
cases of food poisoning for destroy bad offensive bacteria
these compounds have efficacy against salmonella but not against viruses
the antibiotics come mostly as a stealth bomber from the
bloodstream but some they also come from the intestinal tunnel
antibiotics are designed to attack the bacterial cell wall
or its internal components but very few differ between the types of
bacteria that’s why in practice they devastate all the land and destroy the
bacteria both good and bad antibiotics do not destroy some
probiotic bacteria that has a intrinsic resistance included in your
chromosomal DNA as has been shown in studies in
human beings the probiotic bacteria contribute to reduce the period of
diarrhea with it the waste is solidifies again and normalizes the
intestinal habit every trip comes to an end some
Probiotics remain on the skin external of the anus from where they move
in the case of women until the vaginal tract located just four
centimeters away but in most cases they say
goodbye to the intestine and go where you knows

Leave a Reply

Your email address will not be published. Required fields are marked *