Gut microbiota has a regulatory effect in intestinal and extra-intestinal homeostasis, and may also have a regulatory role on brain and behavior. Evidence from animal models suggests an association between disturbances in gut microbiota composition and neurophysiological disorders. There appears to be an emerging concept that the circadian rhythm and gut microbiota influence epigenetic regulation taking part in neuronal cell function. [1] Figure 1
A study of the salivary microbiome provides evidence that the host regulates the composition of this microbiome through genes participating in global regulation of circadian rhythm. The analysis of salivary microbial abundances significantly oscillates within a period of 24 hours. This circadian oscillation is demonstrated to be completely abolished when the salivary microbiota is studied by in vitro incubation, leading to the conclusion that host physiological changes do play an important role. Metagenomics analysis showed that the circadian oscillations clearly favored different process at different times of the 24-hour period. In the evening, the responses of transporters and two-component regulatory systems were favored, while in the morning the metabolism such as
…show more content…
In this study, a high fiber diet and acetate supplementation, change the gut microbiota to prevent development of hypertension and heart failure in hypertensive mice. The analysis of transcriptomes in these animals showed fiber and acetate diet have a protective effect by downregulating the genes in cardiac hypertrophy, cardiorenal fibrosis, and inflammation. Also, there was an observed upregulation of genes of the circadian rhythm, and downregulation of renin-angiotensin system that contributes to hypertension. The molecular changes resulted in improved cardiovascular health and function. [4] figure
Gut microbiota is a complex community of micro-organism species that live within the digestive tract. It is the largest reservoir of micro-organisms mutual to both humans and animals. The Gut microbiome consist of as many as 1,000 types of bacteria. The microbiome also consists of as many as 10 times the amount of cells and roughly as many as 150 times as many genes as the human genome contains. The microbiome has a symbiotic relationship with its human host and it co-evolves. The gut microbiome is a finely tuned eco-system, but its development depends on a number of factors, such as:
The sheer diversity of the microbiota means that bodily disorders associated with the gut region (encompassing the stomach and intestines) are difficult to diagnose, and even harder to find the source of the disorder. Intestinal Bowel Disease (IBD) is a large category of bodily disorders associated with the gut. IBD most commonly manifests itself in two forms – Crohn’s Disease, and Ulcerative Colitis [1]. Crohn’s disease is arguably a more severe form of the disease, as the diseased tissue tends to go deeper into the intestines. Ulcerative Colitis, while still very detrimental and pain causing, causes inflammation of tissue at more of the surface level. The diseases affects a significant portion of the population, with a high rate of new cases discovered - between 20,000 and 100,000 people are diagnosed with types of IBD annually in North America [1]. The role of the microbiota in inducing intestinal diseases has been suspected.
Law enforcement agencies throughout Maricopa County often conduct sobriety checkpoints. Like others who find themselves at such stops, you may be unsure of your rights. As a result, you could incriminate yourself. Therefore, it is important for you to understand your options to help protect yourself from an unwarranted arrest.
The Oxford English Dictionary defines a drug as, “a substance which has a physiological effect when ingested or otherwise introduced into the body” (“Drug,” 2016). Most would consider this definition too broad since simply ingesting food causes physiological changes in the body. However, most do not consider the multifarious ways in which the food that we eat affects our epigenetic gene expression, or the bi-directional signaling between our gut and our brains. The food that we eat is metabolized in the gut by micro-organisms which collectively form our microbiota. The 100 trillion prokaryotic cells that make up our microbiota, constitute 90% of the cells in our bodies, and are derived from more than 40,000 bacterial strains (Forsythe & Kunze, 2012). Increasingly, research is showing the importance of host microbiota composition and the bidirectional signaling pathways between the brain and the gut: some of which are epigenetic. These studies elucidate the profound impacts that signaling pathways, such as short-chain fatty acid mediated effects, nucleomodulins, and other bacterial metabolites, can have on health, behavior and cognition (Sommer & Backhed, 2013). It is now clear that diet-mediated epigenetic effects are important mechanisms in the etiology of numerous diseases (Choi & Friso, 2010). Furthermore, artificial drugs that can act on these epigenetic pathways could
Dietary fiber is a source of carbohydrate that has benefits for intestinal health. It plays a role in the prevention of disease in the intestine and even throughout the body, such as obesity, type II diabetes, and cardiovascular disease (10). Furthermore, when the bacteria in the gut ferment the fiber, metabolites are produced, which benefit the body. Short chain fatty acids are one major end product of this carbohydrate metabolism, which act to lower the colon’s pH, inhibiting pathogenic bacteria from growing. Some other metabolites include lactate, succinate and formate. Lactate is converted to butyrate by the bacteria in the gut, which induces mucin synthesis, which is a glycoprotein that maintains the gut epithelium integrity. Butyrate also acts to prevent bacterial transport across the epithelium and increases tight junction assembly (11). What this means, is that the fermentation of fiber allows these beneficial metabolites to be produced, causing a cascade of reactions that promote health and gut integrity. This shows the complex beneficial interaction between gut microbiota and fiber intake and its role in promoting health.
There are major effects in the United States and Europe to help identify the role of microbial communities in the human body. The colon requires a balance of microbial agents that assist with various functions of the body. An imbalance can lead to C.diff., irritable bowel disease (IBD), irritable bowel syndrome (IBS), neurological disorders, and obesity just to list a few. Many of these problems have grown to an epidemic proportion. Both the United States and Europe have started projects aimed at the microbial communities of the body and their roles in our health.
Studies have identified different genera of bacteria which are present in the microbiome and their role in nutrient intake. Gut microbiota has 3 main enterotypes Prevotella, Bacteroides and Ruminococcus, there is a strong correlation between the concentration of each bacterial community and the dietary constituents. A diet high in carbohydrates and simple sugars would also indicate and reveal a greater concentration of Prevotella whereas a diet high in protein and animal fats would present a higher concentration of Bacteroides in the gut. A long term change in the diet would permanently shift the concentration of bacteria in the gut to accommodate the new nutrient uptake. This would then change the bacterial barrier in the intestine which could make it more vulnerable due to reduced species richness.
Unique microbiota could suggest a human’s current health or if there is any forthcoming chronic disease (Ley, 2006). Families with shared healthy microbes may be able to help relatives who suffer from gastrointestinal disease; but the extant to which the microbiome is shared across generations is not readily known and more research is needed. The core trends for current research revolve around control of obesity, treatment of gastrointestinal diseases such as Crohn’s, and hormonal manipulation in cases of depression. It is imperative to learn to eat for optimal health, to evolve along with the commensals (Turner et al., 2013) as human diets influence diversity of microbes present (Ley et al., 2008). This is a relatively new field with exciting prospects of positive outcomes for some of society’s more chronic
The gut microbiome supplies the human host with metabolic capabilities beyond those encoded by its own genome (Khan et al., 2014). Because host metabolism is effectively regulated by the amalgamation of host and microbial genes (Khan et al., 2014), we should expect the gut microbiota to play a fundamental role in the health of its host. A compendium of research evidence demonstrates a compelling link between obesity and gut microbial composition. The connection between obesity and the gut microbiota is illustrated in the effects of diet on microbial diversity, the association of host genotype with microbial plasticity, the correlation of microbial diversity and metabolic disease, and the modulation of host metabolism by gut
The experiment held on the microbiome of group two’s mouths, was run with various biochemical testing. A molar tooth in each group member’s mouth was swabbed to collect data on the bacteria growing in the mouth under different controls. Based upon prior research, there are common bacteria in the mouth which consist of; Streptococcus mutans, Streptococcus pyogenes, and Streptococcus salivarius. In efforts to identify the bacteria in the microbiome of the group’s mouths, various biochemical tests, and community profiling was used to determine the bacteria. The group hypothesized that the bacteria in the mouth would lessen or grow “good” bacteria while using probiotics.
In 2007, the Human Microbiome Project (HMP) was begun by the National Institutes of Health (NIH) to obtain a better comprehension of the sophisticated biological reactions between the microbiome and individuals. By utilizing of revolutionary culture-independent technology, the specialists in the HMP plan to accomplish two key points: to test the microbial communities found at many various locations in the human body and to examine the function of these microbes in mankind 's health and diseases (Scher and Abramson, 2011). It has become obvious that bacteria groups vary not only among people but also within the human being, upon on the body site sampled and the sampling time (Pineda et al. 2011; Huttenhower C, 2012). In this review, I will review the role of the microbiome in the development and progression of
The study intended to look at the gut microbiome that is naturally present within the gut. The research team of the Louisiana State University designed an experiment with lab rats to predict how the manipulation of the gut microbiome with a high fat diet would affect their brain
In a time of war, when people are needy and weak, what worked rather well for the Nazi party to get its country back in shape was propaganda. Before World War 2 (1933-1938), the Nazis used propaganda to brainwash their citizens into believing that Germany was the best country, to create anti-Semitism. After losing the first great war which caused a major depression in the state, Nazi’s used Jewish people as a scapegoat for Germany's suffering economy and poor moral. This idea of using propaganda against the Jews tied into the Nazi ideology. Nazi ideology came to be after Adolf Hitler and others created the “National Socialist German Workers’ Party (NSDAP)”(Alpha History 1). They called this ideology that they developed ‘National Socialism’, which is now called Nazism today. This ideology was the centerpiece that the Nazi Party moved around. However, The NSDAP didn’t have a very clear expression of its ideology, the only documents that had concrete evidence were the Twenty Five points (1920), and Hitler's journal, Mein Kampf (1924). (Alpha History 1). The core beliefs of the Nazi party are as shown: “Authoritarianism, Totalitarianism, Nationalism, Militarism, Expansionism, Economic sovereignty, Traditional values, and Racialism” (BBC 1-2). The effective use of propaganda; which is “Defined as: information, ideas, or rumors deliberately spread widely to help or harm a person, group, movement, institution, nation, etc” (Dictionary.com), was one of the main reasons the Nazi
Human microbiota is essential for human health. It controls the development of the immune system, regeneration of the epithelium and re¬cruitment of various leukocytes into the epithelium (). With the development of DNA sequencing technology, the molecular characterization of gut microbiome becomes possible and gains attention from scientists. The composition of human gut microbiota is host specific (). However, it can be regulated by many factors.
Historically, studies of the health impact of dietary fiber or fiber supplements focused solely on the impact it had on gut function. However, a recent