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كورونا: دراسة تحدد موعد انتهاء الأزمة في الدول العربية

توقعت دراسة أعدتها جامعة سنغافورة للتكنولوجيا والتصميم موعد انتهاء أزمة كورونا في العديد من الدول العربية والغربية.

واستندت الدراسة إلى البيانات الرسمية المقدمة من عدد من دول العالم حول الإصابات، ودورة حياة الفيروس في تلك البلدان.

ووفق موقع روسيا اليوم تظهر نتائج الدراسة أن أزمة كورونا ستنتهي في معظم الدول العربية المشمولة بالبحث خلال شهري مايو ويونيو المقبلين، عدا الأردن ولبنان، حيث تشير النتائج إلى انتهاء الجائحة فيهما في 19 و22 من هذا الشهر.

وتظهر نتائج الدراسة أن أزمة وباء كورونا ستنتهي في مصر في 20 مايو، وفي السودان في الرابع من الشهر ذاته، وفي السعودية ستصل لذروتها في الأول من مايو على أن تنتهي مطلع يونيو.

ووفقًا للدراسة، فإن قطر ستتجاوز الجائحة في حدود 8 يوليو، والإمارات في 15 مايو والبحرين في 3 يونيو والكويت في 29 مايو

اظهر المزيد

مقالات ذات صلة

تعليق واحد

  1. MicroRNAs are a category of small non-coding RNAs
    that play a big function in regulating muscle metabolism,
    development, renewal, and degeneration [114]. Newest research has established that
    miRNAs play a task within the control of CKD-triggered muscle loss by enhancing protein breakdown or hindering myogenesis.
    Muscle loss within the setting of CKD correlates with a discount in miR-26a, whereas an elevated
    stage of miR-26a mitigates CKD-triggered muscular atrophy via blocking the
    FOXO1 transcription element [31, 115]. A reduction in miR-29
    ranges results in the rise of YY1 transcription component perform, therefore impeding myogenesis, whereas an elevated level of miR-29 mitigates CKD-triggered wasting of muscle
    tissue via downregulating TGF-β, and YY1 axis proteins [116, 117].

    Nevertheless, SOD1 null mice, a mannequin of
    amyotrophic lateral sclerosis, did not exhibit any improvements in survival (despite improvements
    in muscle mass) when exposed to myostatin inhibitors [56].
    In contrast to the above reviews, remedy of the myotubularin-deficient mouse,
    a mannequin of X-linked myotubular myopathy, with ActRIIB-Fc did lead
    to transient increases in muscle mass and strength and
    a 17% enhance in survival [60▪▪]. Angiotensin II serves as an endogenous protein in muscle tissue, which
    encourages skeletal muscle loss. Angiotensin II depolarizes mitochondrial membranes, resulting in increased mitochondrial ROS era and inducing oxidative stress in muscle tissue [95].

    High-protein diets rich in amino acids like leucine can assist
    muscle hypertrophy and reduce myostatin expression. Creatine supplementation,
    combined with resistance training, also can improve muscle
    growth and lean body mass whereas lowering myostatin mrna ranges.
    Myostatin is a game-changer if you want to enhance muscle mass, enhance muscle energy,
    or fight circumstances like muscle losing. It outperforms other SARMs
    in effectivity and speed, frequently producing obvious results after a single cycle.
    YK11 will increase the creation of recent muscle fibres and collagen by inhibiting the action of the myostatin protein, which usually inhibits muscle
    mass synthesis and restoration. In regular mice myostatin deficiency ends
    in enlarged muscle tissue with increased whole drive but decreased specific pressure (total force/total mass).
    An improve in myofibrillar protein synthesis with out concomitant satellite cell proliferation and fusion leads
    to muscle hypertrophy with unchanged myonuclear quantity.

    Intransgenic mice overexpressing FST exhibit decreased quality of skeleton and tibia fractures in distinction to myostatin null
    mice that show enhanced BMD without fractures
    (Fig. 2) [6]. Above all, these findings strongly emphasize the importance
    of target specificity when developing myostatin inhibitors, especially those supposed for
    long-term remedy, to reduce potential antagonistic results in different tissues.
    ACE-011 in a part 1 clinical trial carried out on wholesome
    postmenopausal girls additionally elevated hematocrit, Hb, and RBC ranges [56].
    These results have evoked a substantial interest in ACE-011, originally developed
    to deal with bone-loss issues, as a possible therapeutic choice
    for patients with anemia and ailments involving ineffective erythropoiesis.

    SOD activity was determined using the WST-8 methodology and MDA exercise was evaluated based on the precept of MDA-TBA adduct
    formation. NAD acts as a hydrogen acceptor, and the
    conversion of lactate to pyruvate is catalyzed by
    lactate dehydrogenase. The ensuing pyruvate then reacted with dinitrophenylhydrazine to type dinitrophenylhydrazone.
    Absorbance readings have been recorded at 450,
    440, and 553 nm utilizing a spectrophotometer
    and microplate reader (Thermo Fisher, USA). C2C12 cells, 3T3-L1 cells, or mouse
    MSCs (1000 cells/mL) were cultured in growth media supplemented with a thousand nM MIF peptides (MIF1, MIF2, Ac-MIF1, Ac-MIF2,
    MIF1-NH2, MIF2-NH2, Ac-MIF1-NH2, or Ac-MIF2-NH2) for 1 day.
    Media was then eliminated, and cells had been washed with DMEM (C2C12
    and 3T3-L1 cells) or Ham’s F10 (Mouse MSCs) media
    after which incubated with 0.5 mg/mL of MTT reagent
    (Sigma-Aldrich, St. Louis, MO, USA) for 1 h at 37 °C.

    Due To This Fact, it shouldn’t be utilized as a remedy for diagnosing, treating, curing, or averting any well being situations.
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    personal; they’re curated instantly from the insights supplied by the
    manufacturers. With the proper plan and the best self-discipline, you will
    get significantly shredded in simply 28 days.

    This is where epicatechin dietary supplements can turn out to be useful to beat the variability in dietary sources — but
    we’re getting ahead of ourselves right here. We just
    wish to underscore that most dietary dietary supplements,
    like epicatechin dietary supplements, aren’t the one answer to rising muscle development.
    They’re not magic tablets but could possibly be part of a holistic technique for health targets.
    If you wish to get really technical, it’s part
    of the TGF-β family and works by blocking sure pathways that
    set off muscle growth, such as the IGF-1/PI3K/Akt/mTOR pathway [1].
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    MSTN is very conserved among mammalian species, and natural mutations have been noticed to trigger elevated muscle mass in cattle [1–3],
    canines [4], sheep [5], and humans [6]. The lack of higher advantages
    of myostatin inhibition in HS mice could additionally be due to the advanced nature of
    the suspension protocol. Glucocorticoid-induced muscle atrophy depends on functional myostatin60
    while muscle atrophy during fasting happens even in the absence of myostatin signaling14.

    Myostatin inhibition benefitted skeletal muscle size and performance, which suggests therapeutic potential for each spaceflight and terrestrial purposes.
    Furthermore, consuming FOR lowered the expression of ubiquitin monomer protein and polyubiquitination genes and increased the
    activity of mechanistic goal of rapamycin (mTOR) signaling
    after acute resistance train in a rodent model [13].
    Evans et al. [14] also reported that muscle protein synthesis (MPS) was elevated by
    18% in older adults who consumed the FOR supplementation for 21 days compared with placebo;
    in the absence of modifications in circulating myostatin.
    These previous studies assist the notion that FOR may exert an anabolic influence on skeletal muscle.

    Apparently, FOR ingestion could stop disuse-induced muscle atrophy in dogs handled that consumed FOR throughout eight weeks of exercise restriction [15].

    Currently, no analysis exists in CKD that elucidates the signaling networks inhibiting NF-κB stimulating NRF2.
    Nonetheless, it’s posited that this effect is mediated via the controlling of the enzymes MAFbx (atrogin-1)
    and MuRF1 within the ubiquitin-proteasome system. These techniques are activated in response to oxidative
    stress and irritation, thereby enhancing the functioning of mitochondria [182,183,184].
    Consequently, addressing the NRF2 axis with strategically formulated nutraceuticals could symbolize a viable remedy strategy.
    Quite A Few investigations have sought to elucidate the mechanisms of NRF2
    stimulation by nutritional substances and to substantiate their protective effects in skeletal muscle [185].
    In a previous research, inhibition of MSTN by antibody found no change in fat mass in an animal model [37].

    A myostatin inhibitor prevents myostatin from binding to
    its receptor, thereby repressing the downstream Smad-pathway [11].

    By supplementing it, you can experience advantages in muscle growth and energy and improvements in vascularity, blood move, and
    endurance. Coaching with heavy weight doubtless supplies
    a suggestions stimulus that inhibits myostatin, partially to allow
    for useful muscle growth processes to kick in. If this didn’t happen, we
    might return to the fitness center time and again with minimal
    features to indicate for it. Coupled with the myostatin inhibition that resistance coaching itself
    elicits, there may be no room for one more
    inhibitor to work. The research concludes that further tests are wanted to see whether creatine,
    leucine and HMB are synergistic with respect to myostatin inhibition (and
    other growth pathways) or not.
    Bodybuilders who completed a YK11 cycle reported stronger
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    Users love that it actually works and discloses precisely how a lot of the antioxidant compound they’re
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    take a higher dose earlier than noticing the total effects.
    Epicatechin studies have also found that this compound (along
    with the relaxation of catechin class) could help cut back persistent fatigue syndrome, enhance cholesterol, enhance 
    neurological well being, and even help people dwelling with muscle dystrophy.
    Plus, a number of studies have shown that consuming more flavanoids normally can do every little thing from selling longevity to decreasing the
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    Focusing On the latent or pro-form of MSTN might provide superior efficacy and lowered cross-reactivity.
    Most inhibitors examined thus far have targeted the mature type or employed broadly reactive receptor-based approaches.
    Quite A Few inhibition methods with the potential for greater effectiveness stay unexplored in clinical settings.

    In addition, ghrelin has been proven to prevent muscle atrophy in rats by enhancing AKT phosphorylation, suppressing
    the MSTN pathway, and activating myogenin and MyoD (Chen et al., 2015).
    Ghrelin formulations for parenteral administration are being developed
    (Garin et al., 2013). Nevertheless, administration by injection over prolonged durations can lead to poor affected
    person compliance and remedy failure, and ghrelin is susceptible to enzymatic breakdown in blood when delivered intravenously (Brimijoin et al., 2016).

    Ghrelin liposomes coated with chitosan are being developed for nose-to-brain administration for
    the treatment of cachexia (Salade et al., 2017).
    Designing peptide inhibitors focusing on PPIs is challenging due to the large sizes of PPIs.

    Nonetheless, substantial progress has been reported within the subject of PPI inhibitor design during the previous few years (Jones
    and Thornton, 1996; Lu et al., 2020; Valtonen et al., 2020).
    The use of self-derived peptide inhibitors has
    been one of the most successful PPI inhibitor design methods.
    This strategy entails deriving inhibitory peptides from PPIs that act by inhibiting their cognate interactions.

    The use of self-inhibitory peptides has attracted a lot interest as a method of inhibiting PPIs which
    are thought of essential therapeutic targets (Vlieghe et al., 2010).
    MSTN activity may additionally be inhibited by
    disrupting the interaction between MSTN and its receptor.
    Unlike steroids, the advantages of epicatechin on muscle growth
    are far more subtle and work with the body’s pure systems that
    support blood circulate and pure muscle building.

    These preclinical observations enhance our comprehension of the function of miRNAs in CKD-triggered wasting
    of muscles, indicating that miRNAs could
    characterize viable potential targets for treating this situation. Fatigue is universally a devastating symptom among patients
    with CKD, affecting their high quality of life which to
    some degree is as a result of of excessive levels of lactate in the
    skeletal muscular tissues of those sufferers and is caused by various reasons.
    First, it’s already identified that decreased arterial oxygen content in muscle tissue of CKD patients
    prevents the induction of a sufficient compensatory enhance in cardiac
    output. This inadequate response is generally attributed
    to the presence of underlying anemia, and each systolic
    and diastolic cardiac dysfunction, which are frequent findings in CKD [28].
    On the opposite hand, diminished microvascular vasodilator response because of
    insulin resistance in diabetic sufferers with CKD can additionally be capable of inducing lactate
    overload. The decreased physical activity in CKD sufferers compared to wholesome
    controls is one other contributing issue to the development of lactic
    acidosis and the resulting fatigue in these sufferers [28].
    Satellite cells (SCs), or cells with terminal differentiation possessing the capability to resume muscle stem cells,
    make up the post-mitotic tissue known as skeletal muscle.

    In 2004, Wyeth Prescribed Drugs (now owned by Pfizer) developed the monoclonal anti-MSTN antibody MYO-029,
    the primary MSTN inhibitor to enter scientific trials. MYO-029 binds to mature MSTN, thereby preventing its interaction with
    ActRIIA/B receptors. Muscle cells possess an innate mechanism to control
    their own growth, and on the center of this regulation stands myostatin. This protein acts as a pure limiter, stopping
    muscles from reaching their full potential. But what if we may deactivate myostatin and pave the way for
    unparalleled muscle mass and strength? This tantalizing concept has captivated scientists worldwide, leading to a relentless quest
    for myostatin inhibitors. In the muscular tissues, more
    blood move means extra nutrients for the cells to use in order to grow and multiply.

    Whereas the research into numerous medication has its advantages for folks suffering from well being
    situations by which myostatin over-expression is an issue,
    it’d show to be fruitless for bodybuilders and athletes.
    Creatine and Leucine have endured the test of pure scientific research, empirical study, statement, and maybe most tellingly, the check of time.

    Nevertheless, restoration from the side effects of a stroke (cerebral
    ischemia) can’t be compared with the examine with wild mice and knockout mice, and neither can there
    be any solid conclusions drawn.
    A Quantity Of myostatin-targeting strategies similar to neutralizing antibodies,
    myostatin propeptides, soluble ACVR2A or ACVR2B receptors, and naturally-occurring antagonists (FST) have been developed,
    and those who have progressed into medical trials
    are summarized in Table 1. In the following section, the medical progress of different myostatin inhibitors, their candidate targets, and potential unwanted effects will be discussed.
    Concentrating On the myostatin processing pathway has been actively
    advised to be an efficient myostatin-inhibiting strategy to advertise muscle progress.
    For instance, transgenic mice carrying a mutation in the myostatin RSRR processing web site, by which
    the myostatin precursor protein is proof against cleavage by furin-like proteases, display enhanced
    muscular improvement [31].
    The manuscript must describe a technically sound piece of scientific
    analysis with information that helps the conclusions. Experiments will must have been conducted rigorously,
    with applicable controls, replication, and sample sizes.
    In complete, 24 individuals were recruited, and 22 completed the
    protocol; 2 participants dropped out as a result of Covid-19
    outbreak. Of the individuals who completed the examine, 2 members within the PLA-SUPP were excluded
    because of poor compliance with sporting the knee
    brace through the immobilization part (S1 File).

    References:

    Steroids For Massive Muscle Gain (Stareanconsulting.Com)

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