Chronic inflammation caused by obesity may trigger the development of cells that break down bone tissue, including the bone that holds teeth in place, finds a new research.
The study, completed in an animal model, found that excessive inflammation resulting from obesity raises the number of myeloid-derived suppressor cells (MDSC), a group of immune cells that increase during illness to regulate immune function.
MDSCs, which originate in the bone marrow, develop into a range of different cell types, including osteoclasts (a cell that breaks down bone tissue).
"This research promotes the concept that MDSC expansion during obesity to become osteoclasts during periodontitis is tied to increased alveolar bone destruction," said researcher K.H. Kwack from the University at Buffalo.
"Taken together, this data supports the view that obesity raises the risk of periodontal bone loss," Kwack added.
Bone loss is a major symptom of gum disease and may ultimately lead to tooth loss.
Also known as periodontal disease, gum disease affects more than 47 per cent of adults 30 years and older, according to the Centers for Disease Control and Prevention.
For the study, published in the Journal of Dental Research, the team examined two groups of mice fed vastly different diets over 16 weeks -- one group, a low-fat diet that derived 10 per cent of energy from fat, the other group a high-fat diet that drew 45 per cent of energy from fat.
The investigation found that the high-fat diet group experienced obesity, more inflammation and a greater increase of MDSCs in the bone marrow and spleen compared to the low-fat diet group.
The high-fat diet group also developed a significantly larger number of osteoclasts and lost more alveolar bone (the bone that holds teeth in place).
Also, the expression of 27 genes tied to osteoclast formation were significantly elevated in the group fed a high-fat diet.
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Many people believe that heart disease typically affects men. Unfortunately, this is far from the truth. Coronary heart disease is the leading cause of mortality not only among men, but also among women. But women are actually at greater risk if not detected early, and this exacerbates the issue.
Signs of poor heart health do not appear as visibly in women as it does in men. What this means is that if a man has a heart issue, there are specific symptoms like angina which can be spotted easily and the right course of action be recommended. The same issue in a woman may not result in a sign or symptom that can be easily spotted. So often, their symptoms go ignored or unrecognised and they do not receive timely intervention to correct the problem. The issue is so acute that today 1 in 3 deaths among women is due to coronary heart disease.
There is also a significant lack of self-awareness among women about risk factors and the prevention of CVDs. Women don't only attend to matters of the home, but they hold positions at leading companies, and continue to rise to the occasion and meet impossible demands on their time. Through all of this, they take care of the emotional needs of their family members and loved ones; and still culturally are predisposed to putting the needs of others before their own. The stress they experience, among other common risk factors, often goes unnoticed by those around them. And stress has a greater influence on CVD risk in women vs men. Along with stress, other factors like diet quantity and quality also have a greater influence on CVD risk in women vs men. Additionally, women are also impacted by female-specific risk factors for CVD like polycystic Ovarian syndrome PCOS, preeclampsia, pregnancy induced hypertension and gestational diabetes.
In such a situation where symptoms of a heart problem do not manifest visibly, it is extremely important for women to be aware of their own risk factors and adopt proactive measures to take care of their heart health. For example, one risk factor, stress has been linked to a greater intake of energy and nutrient-dense foods, mainly sources of sugar and fat, and to poor diet quality. Women can take simple steps like reducing unhealthy fats and products with high content of sugar and salt to improve the quality of their diet. Choose ingredients that are good for the heart, like oatmeal, wholegrains, fiber rich vegetables, blended oils with the right balance of fatty acids, legumes, soy products, and the like. Regular and consistent exercise, adequate sleep, and other such lifestyle modifications can help maintain heart health in the long term.
Furthermore with signs of poor heart health not manifesting visibly in women, it is crucial that they get regular health check-ups done to assess their risk proactively. Self-awareness and early identification of cardiovascular risk factors can lead to better prevention of CVD in women.
This World Heart Day, let's choose self-care. Get a simple heart check-up done and encourage other women in yourselves too, to get the same done. Take proactive steps for heart health today.
(By Brajesh Kunwar)
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London- A team of researchers has discovered that the more severely a mother is infected with Covid-19, the more likely she is to experience preterm birth.
The researchers reported that the rate of preterm birth in nearly 1,000 pregnant women, who tested positive for SARS-CoV-2, the virus that causes Covid-19, was a function of the severity of infection.
"The more severe the SARS-CoV-2 infection, the greater the risk of preterm birth," said researcher Roberto Romero from the Wayne State University School of Medicine in the US.
"There was a dose-dependent relationship between the severity of SARS-CoV-2 infection and the risk of prematurity," Romero added.
For the study published in the American Journal of Obstetrics and Gynecology, the team included data from 14 National Health Service (NHS) maternity hospitals in the UK to assess the effects of SARS-CoV-2 infection in pregnancy.
The excess rate of premature birth, they report, is largely due to medically-induced preterm birth brought about by concerns for health of the mother, such as preeclampsia.
Preterm birth, the leading cause of perinatal morbidity and mortality worldwide, is defined as one that occurs before 37 weeks of gestation.
Two-thirds of preterm births are due to the spontaneous onset of preterm labour. The remaining third is due to medical conditions that affect either the mother or the unborn baby that necessitate delivery.
The more severe the Covid-19 infection, the greater the risk of preeclampsia, a sudden increase in blood pressure after the 20th week of pregnancy.
The condition is responsible for 76,000 maternal deaths and more than 5,00,000 infant deaths every year.
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London- Researchers have identified an anti-viral gene that impacts the risk of both Alzheimer's disease and severe Covid-19.
A team from the University College London (UCL) estimated that one genetic variant of the OAS1 gene increases the risk of Alzheimer's disease by about 3-6 per cent in the population as a whole, while related variants on the same gene increase the likelihood of severe Covid-19 outcomes.
"While Alzheimer's is primarily characterised by harmful build-up of amyloid protein and tangles in the brain, there is also extensive inflammation in the brain that highlights the importance of the immune system in Alzheimer's. We have found that some of the same immune system changes can occur in both Alzheimer's disease and Covid-19," said lead author Dr Dervis Salih, from UCL's Queen Square Institute of Neurology and UK Dementia Research Institute.
"In patients with severe Covid-19 infection, there can also be inflammatory changes in the brain. Here we have identified a gene that can contribute to an exaggerated immune response to increase risks of both Alzheimer's and Covid-19," Salih added, in the paper published in the journal Brain.
To understand the gene's link to Alzheimer's, the team sequenced genetic data from 2,547 people, half of whom had the brain disorder.
They found that people with a particular variation, called rs1131454, of the OAS1 gene were more likely to have Alzheimer's disease, increasing carriers' baseline risk of Alzheimer's by an estimated 11-22 per cent.
The new variant identified is common, and it has a bigger impact on Alzheimer's risk than several known risk genes, the researchers said.
Further, the researchers investigated four variants on the OAS1 gene, all of which dampen its expression (activity).
They found that the variants increasing the risk of Alzheimer's are linked (inherited together) with OAS1 variants recently found to increase the baseline risk of needing intensive care for Covid-19 by as much as 20 per cent.
That is, the microglia cells where OAS1 gene was expressed more weakly had an exaggerated response to tissue damage, unleashing what they call a 'cytokine storm,' which leads to an autoimmune state where the body attacks itself, the team said.
OAS1 activity changes with age, so further research into the genetic network could help to understand why older people are more vulnerable to Alzheimer's, Covid-19, and other related diseases, they added.
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Bhopal- A team of scientists at the Indian Institute of Science Education and Research (IISER) Bhopal have in a review identified the biomolecular relationships between Covid-19, ageing, and diabetes.
The review, published in the journal Molecular and Cellular Biochemistry, presented that existing drugs used to treat diabetes, obesity and ageing can potentially be used to treat Covid-19. Similar naturally existing biomolecules were also explored in combination for the Covid treatment.
"There are classes of compounds such as polyphenols found in plant-based food, curcumin (found in turmeric), and resveratrol (found in grapes), have been shown to not only slow down the ageing process, but also possess anti-viral properties," said Dr. Amjad Husain, Principal Scientist, and CEO of Innovation and Incubation Center for Entrepreneurship (IICE), IISER Bhopal, in a statement.
Some other polyphenols that the researchers have identified as being useful for both Covid-19 treatment and comorbidity conditions such as diabetes and ageing may include catechins (present in green tea, cocoa and berries), procyanidins (found in apples, cinnamon and grape skin), and theaflavin (found in black tea).
The researchers also present evidence of some existing potential anti-ageing drugs such as Rapamycin that can be explored for the Covid-19 treatment because of the common biochemical pathways associated with these diseases. Another such example is a drug Metformin , which is usually used to control blood sugar.
The review showed that at the molecular level, there are intersecting pathways that are common to diabetes, ageing, and Covid-19. All three conditions are associated with oxidative stress and lowering of the immune response and complications arising from them lead to the onset of numerous other diseases such as cardiovascular disorders, eye diseases, neuropathy (nerve diseases), and nephropathy (kidney problems).
The researchers believe that an ideal therapeutic candidate for Covid-19 should be able to target the pathways that are common to diabetes, ageing and the SARS-CoV-2 infection.
Further, computational studies showed that lipids present in cell membranes play an important role in coronavirus infectivity.
Natural compounds such as polyphenols may affect the binding of the virus to host receptors and the molecular interactions required for virus replication and release, thereby stopping the infection in its early stages, the team explained.
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Our heart is the key organ in the circulatory system pumping oxygenated blood to various organs. People mostly ignore or are not aware of the symptoms of an approaching heart attack or cardiac ailment. With an increasing prevalence of a sedentary lifestyle, monitoring heart health becomes even more essential. Hence, one should be aware of the newly observed symptoms and complications that signal towards an unhealthy heart.
Chest Pain is Just One of The Many Overlooked Signs
Chest pain is one of the most common signs of an approaching cardiac ailment. Uncomfortable pressure, squeezing, fullness, burning, tightness, or pain in the centre of the chest should be reported to the doctor. Many times these symptoms are confused with gastritis and heartburn.
Snoring and interrupted sleeping patterns
Snoring and sleep-related problems like insomnia and sleep apnea, a disorder where breathing get disrupted while you sleep, have a direct link with heart diseases and other cardiovascular ailments.
Shortness of Breath
Unexplained shortness of breath while doing small amounts of physical activity, at rest or while sleeping (that can wake you up) may indicate an underlying cardiac ailment. Women are more likely to suffer/report shortness of breath when dealing with heart troubles.
Waking up tired, restless and noting higher blood pressure levels in the morning, signals towards an unhealthy heart. Though, one should get a clinical assessment done for ensuring a clear diagnosis.
Sweeting more than usual or without any physical activity, especially if one is not exercising or being active can be an early warning sign of an approaching heart-related ailment. If someone is sitting and suddenly starts sweating profusely, it could be a sign of an oncoming heart attack.
An irregular heartbeat or more formally known as "arrhythmias", is a condition where the heart doesn't pump blood at its normal rhythm. Anyone who is relatively healthy and still has an irregular heartbeat, also indicate a chronic heart condition.
Pain in the chest and upper arm area is what most people typically associate with heart problems. However, pain in the neck or jaw is a potential point of angina pain or discomfort when the heart lacks oxygen-rich blood. Women are more likely to exhibit these symptoms than men, but if the symptoms persist it is advisable to consult a doctor.
A persistent cough is not always a sign of a heart problem, as it's a common symptom of various other common illnesses like cold, flu, and bronchitis. But a never-ending cough can be a sign of fluid building up in the lungs, which signals congestive heart failure.
When the heart isn't able to pump efficiently, blood can back up into the veins that take blood through the lungs. When there is excessive pressure in these blood vessels, fluid is pushed into the air spaces (alveoli) in the lungs. Hence, an unending cough can be caused by the irritation and fluid in the lungs, which is similar to what can cause shortness of breath.
With the current lifestyle patterns, it is very important to monitor your heart health. There can be various hidden symptoms contributing towards an unhealthy heart, hence a timely diagnosis and an active lifestyle should be given attention to. The above-mentioned symptoms can be a few of many symptoms denoting an approaching heart ailment, as a reason being aware towards your own health and consulting for timely clinical interventions become essentially important.
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