I heard that is around 20 grams per day
of skeletal muscle tissue, but I can't find a trustful source.
Can anyone give me a reference where it says what is the maximum weight
of skeletal muscle tissue growth per day (I'm talking about weight
of skeletal muscle tissue precisely, not protein, because we know that muscle tissue is not only protein) in humans?
BCAAs make up almost one - third
of skeletal muscle tissue in humans, and leucine, isoleucine and valine are the three most important aminos for feeding hungry muscle.
Ju YM, Atala A, Yoo JJ, et al., In situ regeneration
of skeletal muscle tissue through host cell recruitment.
Engineers complete first comprehensive mesh - free numerical simulation
of skeletal muscle tissue
Not exact matches
There are also different versions
of AAV that can preferentially go to different
tissues, such as
skeletal and cardiac
muscle, so researchers can deliver them systemically.
«In normal conditions,
skeletal muscle is a self - healing
tissue and can recover promptly from most trauma because
of the satellite cells.
Skeletal muscle is one
of the largest
tissues in the human body and current gene therapy methods are only able to affect a portion
of the
muscle.
Among the 19 study volunteers who lost 5 percent
of their body weight, the function
of insulin - secreting beta cells improved, as did insulin sensitivity in fat
tissue, liver and
skeletal muscle tissue.
Results
of a study conducted by researchers at the University
of Pittsburgh School
of Medicine and the McGowan Institute for Regenerative Medicine showed significant improvement in strength and range
of motion, as well as evidence for
skeletal muscle regeneration, in 13 patients who were surgically implanted with bioscaffolds derived from pig
tissue to treat
muscle injuries.
By early childhood, however, some
of the body's connective
tissues — including
muscles, ligaments and tendons — have begun ossifying into
skeletal bone, locking the joints and distorting posture and movement.
«Under no circumstances should it be concluded from our work that consumption
of marijuana can be a way to cure diabetes,» Prof. Dobrzyn warns and explains: «The concentration
of glucose in the blood is determined by the balance between the activities
of alpha and beta cells
of the pancreas and insulin target
tissues such as
skeletal muscle and adipose
tissue.
Researchers have isolated stem cells from only some
of the body's organs and
tissues, including the blood, brain,
skeletal muscle, heart
muscle and most recently from skin.
This is a schematic
of a bio-bot: Engineered
skeletal muscle tissue is coupled to a 3 - D printed flexible skeleton.
«The protocol teaches every step
of building a bio-bot, from 3D printing the skeleton to
tissue engineering the
skeletal muscle actuator, including manufacturers and part numbers for every single thing we use in the lab,» explained Ritu Raman, now a postdoctoral fellow in the Department
of Bioengineering and first author
of the paper, «A modular approach to the design, fabrication, and characterization
of muscle - powered biological machines.»
In
tissues such as liver and
skeletal muscle, FAO can provide over 75 %
of cellular adenosine triphosphate, while in cardiac
tissue it can be responsible for up to 90 %.
These cells can be used in a variety
of tissue types, including bone, cartilage, fat,
skeletal muscle, smooth
muscle and cardiac
muscle.
Furthermore, we analyzed sections from
tissues directly associated with glucose homeostasis (liver and
skeletal muscle), stained with hematoxylin and eosin, over a range
of 250 µm.
Skeletal muscle tissue also produces increased amounts
of iNOS and TNF - α in obese compared with lean rodents and humans (21, 71).
Northern analysis revealed that in three
of these lines the transgene was expressed in
skeletal muscles but not in any
of the non-
skeletal muscle tissues examined (Figure 1); in the fourth line, Z111B, the expression
of the transgene was below the level
of detection in these blots.
These data demonstrate a preferential effect
of loss
of IL - 15Rα on normalized
skeletal muscle mass that is not seen in non-
skeletal muscle tissue (i.e., heart, spleen, kidney).
Transcripts for IL - 15 and IL - 15Rα have a wide
tissue distribution, and
skeletal muscle tissue contains an abundance
of IL15 and IL15RA mRNAs (1, 2) that are responsive to atrophic stimuli (4),
muscle contraction (5), and aging (4, 6, 7).
The mesoderm, for example, gives rise to key cell types, including cardiac and
skeletal muscle, connective
tissue, bone, blood vessels, blood cells, cartilage and portions
of the kidneys and skin.
Our laboratory focuses on understanding gene regulation in the cardiovascular system,
skeletal muscle, and other metabolic
tissues, with the ultimate goal
of finding novel therapeutic strategies to prevent and treat cardio - metabolic and - myopathic diseases.
Abstract
Skeletal muscle is a major site
of metabolic activity and the most abundant
tissue in the human body accounting for almost 40 %
of the total body mass.
Practically, MSCs can function and progress through distinct stages
of differentiation to give rise to different functionally mature
tissues types, including smooth and
skeletal muscle, tendon and ligaments and even neurons.
One
of these
tissue types, specifically the mesoderm, develops into
skeletal muscle cells (along with other cell types, including cardiac
muscle, kidney cells, red blood cells, and smooth
muscle).
These results imply that mutations in the gene encoding RyR1 will not only affect
skeletal muscles, but other
tissues that express this calcium channel as well, thereby broadening the clinical spectrum
of disorders due to RyR1 dysfunctions.
A second line
of research is to use
skeletal muscle formation in the chick embryo as a model to understand how cells within
tissues display complex behaviours while being exposed to an ever - changing cellular environment.
(6) This is consistent with the deleterious effect
of such cells on
tissue function, and with the researchers» conclusion that «the observed improvements in
skeletal muscle and fat
of late - life treated 10 - month - old BubR1H / H; INK - ATTAC - 5 mice reflect attenuated progression
of age - related declines rather than a reversal
of ageing».
Interestingly, some
of this variation seems to be driven by sex in
skeletal muscle — a sexually dimorphic
tissue — where a few maternally imprinted growth repressors have lower level
of imprinting in females.
(6) In early - aging (2 - mo old) BubR1H / H; INK - ATTAC mice, but not young (3 - wk - old) mice, transcripts
of the system and
of reporter green fluorescent protein «were significantly elevated in [subcutaneous] adipose
tissue,
skeletal muscle and eye, but not in
tissues in which endogenous p16Ink4a is not induced, including liver and heart.»
We also identified the mutation for a new form
of rostrocaudal muscular dystrophy that affects
skeletal muscle tissues with an unusual front - to - back severity
of symptoms.
Group research aims to study the relations between nutraceuticals, physical activity, intracellular mechanisms, gene expression and microbiota using a translational approach to characterize the impact in the whole body
of metabolic interactions studied in individual organs and
tissues (in vitro / ex vivo:
skeletal muscle, heart, bone, liver and kidney).
In
tissues — such as adipose
tissue,
skeletal muscle and eye — in which p16 (Ink4a) contributes to the acquisition
of age - related pathologies, life - long removal
of p16 (Ink4a)- expressing cells delayed onset
of these phenotypes.
The authors highlight the successful application
of both induced pluripotent stem cells and embryonic stem cells for this first example
of the in vitro formation
of functional and mature
skeletal muscle tissue, thereby also establishing the potential for patient - specificity in disease modeling, drug development, and possible
muscle repair.
Furthermore, the transplantation and subsequent engraftment
of 3D - cultured
skeletal muscle tissue into the endogenous
muscles of immunocompromised mice led to high levels
of vascularization and maintained
muscle functionality.
Jess uses a
skeletal muscle tissue engineering strategy to culture pork, with major focuses on
muscle fiber formation, vascularization, and bioreactor design for scale up
of meat production.
This is associated with modification
of hypothalamic nitric oxide release that favors glucose uptake in metabolic
tissues such as
skeletal muscle, liver, and adipose
tissue.
Review
of «Engineering human pluripotent stem cells into a functional
skeletal muscle tissue» from Nature Communications by Stuart P. Atkinson
As much as we would want to have those
skeletal muscles brimming with life till the fag end
of our life, the harsh reality is that the wise 40s often signal the onset
of Sarcopenia or a natural decline in the mass and
tissue quality
of the
muscles.
Furthermore, continual aging endorses augmentation
of non-contractile oxidised proteins which pile up in the
skeletal muscle tissue and hinder
muscle strength and its mass — all leading to poor
muscle function.
On the other side, our insulin sensitivity has a natural circadian flow, which means that
skeletal muscle is most sensitive in the morning and then experiences a gradual decline throughout the rest
of the day, while fat
tissue is the least sensitive in the morning.
The consumption
of cocoa encourages blood vessels to branch into cardiac and
skeletal muscle tissue, which brings an influx
of oxygen and nutrients.
As we already mentioned, adults have small amounts
of brown fat, since it is the
skeletal muscle tissue that is in charge
of meeting the heat - producing requirements, which we already deemed brown fat's «first cousin».
Skeletal muscles contain thousands, sometimes millions
of muscle fibers which are bundled together and contained in a layer
of connective
tissues.
One theory proposes that once the storage capacity
of subcutaneous adipose
tissue (SAT) depots is exceeded under conditions
of energy excess, either as a result
of impaired expandability and / or excessive hypertrophic growth, fat deposition within visceral depots and non-adipose
tissues including the liver,
skeletal muscle and pancreas can ensue.93 This can subsequently lead to the development
of systemic IR and a series
of associated cardiometabolic disorders including dyslipidaemia, dysglycaemia, hyperinsulinaemia and hypertension.3 Expression
of pro-inflammatory mediators including interleukins 1 (IL - 1), 6 (IL - 6), tumour necrosis factor alpha (TNF - α) and resistin, are also increased which can further potentiate IR and promote atherosclerosis.
When asked to explain why growth hormone is an anabolic hormone rather than a steroid, the answer is that it stimulates the continual growth
of the body's
tissues, namely
skeletal and
muscle.
In young individuals, the resulting nightly autophagic protein breakdown is normally so strong that it causes
skeletal muscle tissues to release substantial amounts
of free amino acids, including the cysteine needed for glutathione synthesis and defense against oxidative stress.
The underlying mechanism is found to be partly related to the activation
of LPL in plasma and
skeletal muscle, and inhibition
of LPL in adipose
tissue following the activation
of pAMPK.