Sunday, March 29, 2020

Coenzyme Q10 (CoQ10): We Explain The Antioxidant's Benefits

As ingredients like retinol and vitamin C steal the skin care spotlight, coenzyme Q10 has quietly entered beauty space. After all, it is an antioxidant that works “behind the scenes.” Yet it is a skin care ingredient that does wonders—both internally and topically. Yet, many people are unaware of how this nutrient exactly works, and why it’s so important. Here’s our deep dive into the powerful properties of coenzyme Q10.

What is coenzyme q10 (CoQ10)?
Coenzyme q10 (CoQ10), also called ubiquinone, is a fat-soluble compound that’s found in all your cells. It’s known as a “coenzyme” because it’s needed for other enzymes to function. It’s kind of like that one bestie you can’t do certain things without.

Your cells need CoQ10 to produce energy. Specifically, it’s used in the mitochondria, or the “powerhouse” of the cell. Here, electrons move along chemical pathways to make energy. CoQ10 transports electrons in these pathways, making it an essential player in the game. The energy produced by these pathways are then used for normal cellular functions, including those involved in skin health.

CoQ10 is also a potent antioxidant. Furthermore, it’s the only fat-soluble antioxidant naturally made by the human body. But your levels drop as you get older. And while it’s found in some foods—like fish, peanuts, and broccoli—it’s difficult to get enough through the diet. Only about 25% of your CoQ10 levels come from food intake.
Fortunately, taking CoQ10 supplements can help support your natural levels. This is especially important if you’re looking to fine tune your beauty routine and improve your skin from the inside out. Besides, there’s a reason why this superstar ingredient has become increasingly popular in the wellness world. With growing awareness of internal skin health, more and more people are paying attention to the impact of cellular beauty.

What are the skin care benefits?

As a powerful antioxidant and electron transporter, CoQ10 has been found to have a major role in healthy skin. Most research has focused on dietary supplements, but there’s growing evidence that topical application can help, too. Let’s look at how CoQ10 can elevate your skin health.


1. It protects the skin from oxidative stress.
Oxidative stress occurs when harmful molecules called free radicals build up, surpassing the level of antioxidants in your body. It’s also your skin’s worst enemy. According to board-certified dermatologist Kenneth Mark, M.D., oxidative stress is the leading cause of chronic inflammation in the skin. It promotes collagen breakdown and hinders skin cell function, too. “At its worst, oxidative [stress] can also damage DNA and cause pre-cancers and cancers,” adds Mark.

Enter the almighty CoQ10. Like other antioxidants, it neutralizes free radicals by generously donating an electron. It also protects against lipid peroxidation, a process in which free radicals damage cell membranes. To top it off, CoQ10 protects the membranes of mitochondria and regenerates other antioxidants, like vitamins C and E—both of which are just as important for healthy skin. 


2. It reduces the appearance of wrinkles.
If you’re looking for an internal approach to wrinkles, turn to CoQ10. As an antioxidant, it protects the skin from UV radiation, one of the main sources of oxidative stress in the skin. Prolonged exposure to UV radiation can lead to premature skin aging—known as photoaging—and degrade and disorganize collagen fibers. It also destroys fibroblasts, which are cells that produce collagen proteins (and help heal wounds). The result is fine lines and wrinkles, says Mark. 

Normally, your skin uses antioxidants—like CoQ10—to defend itself from UV radiation. But as your levels decrease over time, replenishing your levels is key. Research has found that topical CoQ10 can significantly decrease facial wrinkles. Similarly, another study found that CoQ10 supplements reduce wrinkles and lines while enhancing skin smoothness. 


3. It energizes your skin cells.
So, let’s talk about cellular energy. According to board-certified dermatologist Hadley King, M.D., every single one of your cells needs energy to properly function. This includes important skin cells like fibroblasts (which make collagen) and keratinocytes (which make keratin). However, as CoQ10 decreases with age, so does mitochondrial activity and energy formation. And without enough energy, the function of your skin cells will decline, leading to sagging skin and wrinkles.

To support your skin cells’ energy needs, fuel up on CoQ10. For starters, this gives mitochondria the tools they need to energize cells and repair damage due to stress, notes Mark. Secondly, as an antioxidant, it safeguards energy pathways by combatting free radicals. How’s that for double duty?

4. It might support wound healing.
Though free radicals (understandably) get a bad reputation, they’re helpful in small amounts. During the wound healing process, for example, they’re needed to defend against harmful bacteria. The problem is when free radicals build up and cause oxidative stress, causing wound healing to become impaired, says King.

On the flipside, “[reducing] oxidative stress can accelerate wound healing,” notes King—and there’s some evidence that CoQ10 can do just that. In an animal study, topical CoQ10 facilitated collagen formation and reduced inflammation during healing. “It does this by inhibiting enzymes that damage collagen via oxidative stress, [which] tilts the soft tissue in favor of collagen formation,” says Mark. Another animal study found similar results, observing a link between faster wound healing and CoQ10 application. And though more human studies are necessary, CoQ10 is anecdotally reported to be a stellar treatment for wound management.


How do you use it?

CoQ10 is available in topical products and as a dietary supplement. In its topical form, CoQ10 is usually found in products like serums, eye creams, and facial moisturizers. Look for formulations that also have vitamins C and E, two skin-friendly ingredients that work in tandem with CoQ10.

As for CoQ10 supplements? Since CoQ10 is fat-soluble, it’s best to consume supplements with fat, which improves its absorption. CoQ10 supplements are also generally considered safe and rarely cause side effects. Yet, it’s still a good idea to pay attention to how you feel after taking CoQ10 (or any supplement, for that matter). If CoQ10 does cause side effects, they are usually mild and might include stomach discomfort, nausea, dizziness, and headaches. 

If you’re interested in taking CoQ10 supplements, look for a product that has been tested for purity and composition. This is usually indicated by a seal of approval on the packaging. You can also ask your primary care physician or dermatologist for a personal recommendation. 


The bottom line:

CoQ10 is a potent antioxidant found naturally in our bodies, but declines with age. It supports our mitochondrial function, aiding cellular energy. It also supports against oxidative damage. You can use the active in topical or supplement form.


This is only for your information, kindly take the advice of your doctor for medicines, exercises and so on.     

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Friday, February 21, 2020

Cancer risk in psoriatic patients

A new study published in February 2020 in the journal JAMA Dermatology reports that there is a 21% increased risk of cancer in patients with psoriasis, but not with psoriatic arthritis alone.

What is psoriasis?

Psoriasis is a chronic inflammatory disease that affects the skin and the joints, mediated by the T immune cells. The skin cells typically travel from the basal layer of the epidermis, where they are generated to the most superficial layer. By the time they reach the top layer, they have differentiated completely and are dead skin cells or keratinocytes, filled with the skin protein called keratin.
However, in psoriasis, the basal cells speed up on their journey to the top layer, and as a result, they reach it in an immature state, pushing the mature keratinocytes off. The skin, therefore, appears red, tender, cracked, and peeling.

Earlier studies have found that patients with psoriasis are at an increased risk of cancer compared to people without the condition or the general population. Psoriasis is also associated with smoking and drinking; two factors also linked to cancer risk. It is already known that lymphomas and keratinocyte cancers are present at a higher rate in patients with psoriasis.
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Psoriasis on elbow.
Secondly, several new biologic drugs have been introduced for the treatment of psoriasis, but biologic agents have a risk of cancer. However, whether these agents confer a risk of cancer independent of the disease itself is an unanswered question.

The study

The current study is a systematic review and meta-analysis to find the risk of cancer in two conditions, namely, psoriasis and psoriatic arthritis, in addition to the risk of specific cancers. The researchers also aimed at finding the risk of cancer in psoriasis patients who are on biologic agents rather than conventional drugs.

The researchers looked at 112 studies in which over 2 million patients with psoriasis or psoriatic arthritis were involved, and in which cancer outcomes were reported. They analyzed the risk of cancer overall, and certain cancers specifically.

The findings

The study showed an almost 4.8% prevalence of cancer in psoriasis patients, with an incidence rate (IR) of nearly 11.8 per 1000 person-years. If keratinocyte cancer is excluded, the prevalence and IR are 4% and 7.6, respectively.

Eight studies showed a higher and two studies at a lower risk of cancer in psoriasis patients. The overall risk was 20% higher, or 14% higher after excluding keratinocyte cancer.

Keratinocyte cancer occurred in 2.5% of patients with psoriasis, with an IR of 4.4. The risk for this cancer was more than 2.28 times higher in psoriasis patients compared to others. For melanoma, lymphoma, and non-Hodgkin lymphoma, the risk was 13%, 56%, and 48% higher, respectively. For Hodgkin lymphoma, the risk was 87% higher.

Concerning breast cancer and colorectal cancer, the risk was not higher in these patients. However, psoriasis patients were at a 26% higher risk of lung cancer.

Overall, there was no significant change in the risk of cancer for patients on biological agents, nor when keratinocyte cancer or lymphomas were considered. The same was the case with psoriatic arthritis as well, except for breast cancer, which was significantly higher in three studies.

Implications

The current study includes over twice the number of studies as the last comprehensive review in 2013, including newer studies with a more significant number of participants. Yet the findings remain the same overall, supporting the existence of an association between psoriasis and cancer, but not psoriatic arthritis.

Keratinocyte cancer is linked to sunlight exposure, and the risk is significantly increased in patients with psoriasis who are on PUVA therapy, involving exposure to ultraviolet rays. The highest risk is for squamous cell carcinoma. Other factors that have been suggested are more extended periods spent in the sunlight and treatment with UVB irradiation and with coaltar, which are both risk factors for keratinocyte cancer.

The increased risk of lymphoma may be due to the higher risk of cutaneous T-cell lymphoma, which is markedly more common in people with severe psoriasis. This might be due to chronic activation of the immune system, the authors speculate.

Lifestyle factors like alcohol and smoking are also linked to the higher risk of psoriasis and also of cancer in these patients. However, other factors are also involved, and these need to be identified.

With many different types of cancer occurring at a higher rate in patients with psoriasis, it is essential that doctors who treat such patients be aware that such risks exist. Especially in the case of lymphomas, any therapy for psoriasis which activates the immune system could also result in increased lymphoma activity. More research is required to assess the risk with the use of biologic agents and in psoriatic arthritis.

This is only for your information, kindly take the advice of your doctor for medicines, exercises and so on.     

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Wednesday, November 27, 2019

Scientists Succeed In Growing A Beating Human Heart From Stem Cells

Scientists from Massachusetts General Hospital and Harvard Medical school have successfully grown a human heart from adult skin cells, according to a study published recently.

The breakthrough could be huge news for the 4,000 Americans currently awaiting heart transplants, and the more than 25 million people who suffer heart failure each year. In the United States, approximately 2,500 of the 4,000 people in line for heart transplants actually receive them, indicating a shortage that research like this might be able to address.

According to the journal, the scientists took 73 donor hearts deemed unfit for transplantation, stripped away cells on those hearts and replaced them with skin cells that — using messenger RNA — had been turned into pluripotent stem cells, the kinds of cells that can be specialized to any part of the human body. After causing the stem cells to develop into two types of cardiac cells, the researchers then mimicked the environment a human heart would typically grow within and infused the cardiac cells with a nutrient solution that facilitated growth.

After two weeks, they shocked the hearts with electricity, and lo and behold, the hearts began beating. The tissue inside appeared to be well-structured and functional. Scientists compared the growth of the heart as "building a house with the frame already constructed." 

Ultimately, the researchers aim to grow an entire human heart that is capable of being transplanted. 
"To show that functional myocardial tissue of human scale can be built on this platform, we then partially recellularized human whole-heart scaffolds with human induced pluripotent stem cell–derived cardiomyocytes," the team of scientists wrote in their journal. "Under biomimetic culture, the seeded constructs developed force-generating human myocardial tissue and showed electrical conductivity, left ventricular pressure development, and metabolic function."

The technological development was celebrated on social media. As one user wrote: "Living in the future is awesome."

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Saturday, September 28, 2019

Multiple sclerosis: Skin cells may help to repair nerve damage

A personalized treatment for multiple sclerosis may be one step closer, thanks to a new study that reveals how a person's own skin cells could be used to repair the nerve damage that the disease causes.

Led by scientists in the United Kingdom, the study took skin cells from adult mice with multiple sclerosis (MS) and then reprogramed them into neural stem cells (NSCs).

These "induced neural stem cells" (iNSCs) were transplanted into the rodents' cerebrospinal fluid.

There, they reduced inflammation and repaired damage to the central nervous system (CNS).

Lead study author and his team believe that their strategy could offer a promising treatment for MS and other neurological diseases.

MS is a progressive neurological disease that is estimated to affect more than 2.3 million people across the globe.

While the precise causes of MS remain unclear, "an abnormal immune system response" is thought to be involved. Such a response leads to inflammation in the CNS, which causes the destruction of myelin, or the fatty substance that protects nerve fibers.

As a result, the nerve fibers become damaged. This disrupts neuronal signaling and triggers the neurological symptoms of MS, including tingling in the face or extremities and problems with movement, balance, and coordination.

Using stem cells to treat MS
Previous research has investigated the use of NSCs for the treatment of MS. NSCs are stem cells that have the ability to transform into different types of cell in the CNS — including neurons and glial cells.

However, there are some barriers to this strategy. As researchers note, NSCs are derived from embryos, and it would be hard to obtain them in high enough quantities to sustain clinical treatment.
It is also possible that the immune system would see embryo-derived NSCs as foreign invaders and try to destroy them.

As such, researchers have turned their attention toward iNSCs, or NSCs that can be developed by reprogramming adult skin cells. Importantly, since these cells would be derived from the patients themselves, the risk of an immune system attack would be significantly reduced.

To test whether iNSCs could be a feasible treatment option for MS, the researchers tested them on adult mice that had been genetically engineered to develop the condition.

The team took cells from the skin of the mice and reprogramed them into NSCs, effectively making iNSCs. Next, the team transplanted these iNSCs into the cerebrospinal fluid of the mice.
Study yields promising findings

The researchers found that this led to a reduction in levels of succinate, which is a metabolite that the team found is increased in MS. This increase prompts microglia — a type of glial cell found in the CNS — to trigger inflammation and cause nerve damage.

By reducing succinate levels, the iNSCs reprogrammed the microglia — which, in turn, reduced inflammation and brain and spinal cord damage in the mice.

Of course, human clinical trials are needed before iNSCs can be considered as a suitable treatment for MS, but this latest study certainly shows promise.

"Our mouse study suggests that using a patient's reprogrammed cells could provide a route to personalized treatment of chronic inflammatory diseases, including progressive forms of MS."   said the lead author.

"This is particularly promising," Dr.  adds, "as these cells should be more readily obtainable than conventional neural stem cells and would not carry the risk of an adverse immune response."


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Sunday, February 24, 2019

New study could offer protection to patients with rare genetic disease

A new  study now finds that skin cells taken from patients with a rare genetic disorder are ten times more sensitive to damage from ultraviolet A (AVA) radiation in laboratory tests than those from a healthy population.

Experts believe that the work, which has involved designing a brand new molecule with potential to be added to sun cream, could benefit those with Friedrich's Ataxia (FA), as well as those with other disorders characterised by mitochondrial iron overload, notably Wolfram Syndrome and Parkinson's disease, where UVA rays from the sun may pose particular challenges.

When cells are exposed to UVA rays, the damage caused to cells can be worsened by excess free iron in mitochondria which fuels the generation of 'free radicals', including Reactive Oxygen Species (ROS), which can damage DNA, protein and fats - increasing the risk of cell death and cancer.

Patients with FA have high levels of free iron in their mitochondria. The new research shows that this excess free iron makes skin cells from these patients up to 10 times more susceptible to UVA damage.

The scientists have custom-built a molecule which acts like a claw to scoop up excess iron particles within mitochondria, preventing them from amplifying UVA-induced damage. The researchers' goal is to see this molecule added to sun creams to enhance their protective effect against UVA rays.
Lead author of the study said, "A major function of mitochondria is to produce energy, and iron in the right amount is essential for their function.

He added, “Friedreich's Ataxia is one example of a disease of 'mitochondrial iron overload'. Our results -should they translate to people's skin (in vivo), suggest that patients could be up to 10 times more sensitive to UVA. The damage you and I would get in our skin from for example 2.5 hours' exposure to solar UVA would be 4-10 times higher for a patient with FRDA.”

According to him, excess iron in the mitochondria means more reactive oxidising species and more damage to cell constituents, resulting in cell functions being compromised. This situation leaves cells more sensitive to subsequent oxidative damage notably by environmental factors such as UVA of sunlight.

"We hope that our findings can be ultimately translated to the people to give them a better quality of life and that we can inspire other researchers to follow those avenues."

The team is now looking to continue the research into the chelator with an in a vivo mouse model of the disease. 

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