Open access peer-reviewed chapter

Fetal-Neonatal Lifestyle Basis of the Adult Metabolic Syndrome Patients

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Hashem Kilani, Abdulsalam Al-Za’abi, Areej Kilani and Laila Kilani

Submitted: July 17th, 2018 Reviewed: June 6th, 2019 Published: September 6th, 2019

DOI: 10.5772/intechopen.84218

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Abstract

Information on the health status in modern society and developed countries depicts an increase in noncommunicable diseases (NCDs) such as diabetes, overweight, obesity, and metabolic syndrome. An examination of factors related to this increase shows that there is a shift in the daily practices of the people, and especially children in all ages, as they grow older toward a more sedentary lifestyle. This chapter concentrated on the term used to describe lifelong changes in function that follow a particular event in an earlier period of the life span, which is called programming. These include the lifestyle in the fetus, pregnant woman, and parents; all of which affect pronounce metabolic syndrome in later life of adult. Therefore, regular physical activity and living systematic healthy lifestyle in the prenatal stages are of importance to genetic modification of inheritance for future generations.

Keywords

  • lifestyle
  • adult
  • metabolic syndrome

1. Introduction

For more than a decade, high blood pressure, arteriosclerosis, smoking, high blood sugar, and lack of movement have been dangerous factors leading to morbidity and mortality. Today, recent studies indicate that the first risk factor to rush to death is the lack of physical activity and time of daily sitting in addition to the poor selection of healthy food [1, 2, 3, 4, 5]. It may be the responsibility of everyone in us not to follow a healthy lifestyle that is inherited by generations, the most important factor that has led to a negative acceleration of human health. This would not have been possible without the negative use of technology for human life.

The sedentary life experienced by most people has led to an increase in such risks and a marked increase in noncommunicable diseases. So, the most important issues that urge them to take the initiative in the marketing of sports and physical activity that the movement blessing and health crown on the heads of healthy cannot be achieved without beginning to modify the behavior and the adoption of a healthy lifestyle. This includes regular physical activity and stay away from pressure exercise relaxation and selection of appropriate food and early sleep with sufficient hours (quality of sleep) [5]. Therefore, in order to do so, school sports are a productive educational activity that is of great physical interest to the student [6]. Educational institutions and organizations have converged in recognition of the importance of school sports in maximizing the use of the time available to activate the lesson of physical education. This interest emphasizes the inclusion in many studies of its recommendations on the importance of school sports and its role in the development of students from the mental, psychological, and physical aspects [6, 7, 8, 9].

Physical activity has much health, psychological, and social benefits. It helps to raise the level of fitness for better health and more active life. It also helps prevent many diseases or metabolic symptoms. It also reduces the risk of heart disease, diabetes, low back pain, and obesity, as well as the development of health and nutrition knowledge and the development of positive attitudes toward physical activity [2, 9, 10, 11].

Metabolic syndrome is a combination of medical disorders that increase the risk of cardiovascular disease and diabetes, which refers to all the biochemical processes that occur in the body; it is a group of metabolic abnormality-related risk factors that greatly increase the risk of developing type 2 diabetes and health problems in the heart and blood vessels. Also, their biochemical processes in the body that leads to abdominal obesity and insulin resistance causing type 2 diabetes and Cardiovascular (hyperlipidemia) [12].

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2. Obesity facts

While the prevalence of obesity appears to have plateau in the United States, emphasis is not only placed in treatment but also prevention as only 8% of normal weight children will become obese adults, while those who are obese during childhood tend to be obese adults. Also, a longitudinal change in percentages of obese children in Jordan, KSA, UAE, Kuwait, and Oman has similar trends. The increased rate of obesity in childhood and in the overall population is also present in the Arab world [13]. Data from this study done by students in Seeb, Muscat, demonstrate how the proportion of children who grew into adolescents that became overweight or obese increased from a single digit (about 7 percent) to more than 20% (so we are talking that in the same cohort of children when they were 6–7 years old only one in ten was classified as obese, but by the time they are late teens, one in five is classified as overweight). Participants were assessed at the beginning of the school year during the screening that took place before entering the different levels of education [14].

Kilani et al. have also presented a similar prevalence of college students who are overweight at SQU, with a much higher proportion of students who present an unhealthy level of body fat [14]. In another survey, males and females had similar values for BMI and WC, and they maintained a normal BMI of <25 Kg/m2. The genetic predisposition might synergize with environmentally driven factors like physical activity and diet in the etiology of obesity and overweight among Omani and Jordanian adolescents [4, 15]. So, what are some differences between normal weight and obese people? Hormone research agenda is divided into two aspects: exercise endocrinology (hormonal responses to exercise) and the role of physical activity in promoting a healthy lifestyle.

The main characteristics of the syndrome store excess fat in the abdomen as visceral fat (abdominal obesity) and “insulin resistance” [16, 17]. Firstly, obesity generally can be inherited or acquired, especially when an individual lives in an incubator environment to increase the number and size of fat cells. Prader-Willi syndrome (PWS) is rarely caused by a genetic defect that leads to physical, mental, and behavioral problems. One of the factors that contribute to childhood obesity great feeling of hunger and lack of control over eating which leads to chronic overeating (hyperphagia) and obesity [18].

Defined etiology of obesity is accounted for (3-5%) with issues related to hormonal diseases, lesions in the hypothalamus, and altered genes (Early-onset hyperphagia caused the pathologic obesity) [18].

The second is Multi-factorial obesity which results from an interaction between inherited predisposition and environment (epigenetic). PWS results from all alteration in the expression of the paternal chromosome 15, in the regions 11–13, and there are three main genetic alterations that result in the syndrome: paternal deletion, maternal uniparental disomy, and imprinting defect [19]. These causes that people with syndrome although share some common characteristics also present a wide range of abilities and disabilities. As babies, individuals with the syndrome are what we call floppy babies because of their decreased muscle tone, most of them have to be intubated as they fail to thrive, and somewhere between ages 4 and 8, an exacerbated seeking for food behavior begins which turns into hyperphagia that if it is uncontrolled it can turn into obesity [19]. Physically, they could be shorter than normal if not on growth hormone replacement therapy and have small hands and feet; some present intellectual disability, deficit in their sensorial systems and in their motor behavior [19]. Many researchers recommend to reduce weight by 10% of body weight in the first 6 months to a year and continued losing weight after reaching less than 25 in BMI. In general, recommendations include reducing calories including reducing 500–1000 calories per day [20, 21, 22].

In some studies, 9007 men and 1491 women aged 44 +/−9 years free of metabolic syndrome took measurements of waist circumference and blood pressure and fat and sugar glucose as documented in the baseline and follow-up checks. Cardiorespiratory fitness was measured by maximal treadmill test duration. During the average follow-up of 5.7 years, 1346 men and 56 women developed metabolic syndrome. Inverse associations between fitness and metabolic syndrome incidence were found, suggesting that greater cardiorespiratory fitness levels may be beneficial in the primary prevention of metabolic syndrome [23]. The purpose of this paper was to review through scientific research published to respond on to the following question: Can the conditions during fetal development program the system to result in a survival advantage, yet increase vulnerability for adult diseases?

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3. Developmental plasticity

The developmental plasticity is the ability of an organism to develop in various ways, depending on the particular environment or setting [24]. This can be based on the interaction of cellular cells, which refers to direct interactions between cell surfaces that play a crucial role in the development and functions of multicellular organisms, such as complex, structural humans. These interactions allow the cells to communicate with one another in response to changes in the microbial environment [25]. This ability to send and receive signals is essential for cell survival. For instance, normal embryonic and postnatal development requires a fine regulation of cell proliferation, differentiation, migration, and apoptosis. During organogenesis, cell–cell interactions trigger events such as epithelial-mesenchymal transition (thin protective layer) and tubulogenesis (kidney development) that describes tissue that forms a thin protective layer on exposed bodily surfaces and forms the lining of internal cavities, ducts, and organs. Another example is related to cystogenesis, tubulogenesis, and kidney development [26]. Cystogenesis and tubulogenesis are important for many complex biological processes such as organ development. Again, if we compare an epidermal keratinocyte and a pancreatic acinar cell, the same genome, yet their profound morphological, physiological, and biochemical differences are entirely the product of epigenetic modification. Keratinocyte cells are the building blocks of the skin. They are the most common type of skin cell and make keratin, a protein found in the skin, hair, and nails.

One condition that causes the pancreas to stop producing adequate enzymes is pancreatic acinar atrophy. This occurs because the disease hurts slowly and without obvious symptoms. The ability of many animals is adaptability to environmental evolution. This can make small size and slow metabolism to live and survive, while the enlarged size and accelerated metabolism are advantages of reproductive success when resources are available. Often this occurs early in life or even through inheritance from parents and even grandparents. However, fetuses who are adjusting to one environment, such as the uterus, may be at risk when exposed to other environment when they become adults [27]. Effects of prenatal exposure to the Dutch famine on adult disease in later life. Bees determine the number of larvae within the appropriate age group and begin to place these larvae to become queens. The only difference between the honeybees and the queen is the food received during the process of maturity: the workers feed potential queens royal jelly throughout their lives, while the bees are working on royal jelly during the first 2 days of the larvae [28].

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4. Biological evidences

Biological evidence may be relevant to understanding human development and susceptibility to disease. With the improved nutritional status of many mothers around the world, the characteristics of their offspring—such as body size and metabolism—also changed. Their mother’s prenatal response may generally respond to individuals so that they are more appropriate to the environment’s expectations through the signals available in early life. If the mother is a smoker during pregnancy, it is possible that the third generation of her offspring will be smokers. Ironically, however, rapid improvements in nutrition and other environmental conditions may have adverse effects on the health of those whose parents and grandparents lived in poor conditions, as happened in World War II in Europe [29] and the famine in India early in the last century [30]. The full understanding of the patterns of human plasticity in response to early nutrition and other environmental factors will have implications for public health management.

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5. Thrifty hypothesis

The thrifty gene hypothesis indicates that certain populations may have genes that determine increased fat storage, which in times of famine represent a survival advantage, but in a modern environment result in obesity and type 2 diabetes. An example of the thrifty hypothesis showed by Dutch famine study which has shown that the offspring of mothers who were pregnant during the famine have more diabetes and those who were exposed in early gestation have more atherogenic lipid profile, altered clotting, more obesity, and a threefold increase in cardiovascular disease. Explanations for the heritability of these syndromes and the environmental contribution to disease susceptibility are addressed by the “thrifty genotype” and the “thrifty phenotype” hypotheses [27]. The underlying scientific hypothesis has been developed by epidemiology studies and emphasized by Dr. David Barker in the United Kingdom. During development fetuses respond to severe malnutrition by favoring the metabolic demands of the growing brain/CNS and heart at the expense of other tissues [31, 32]. In addition, the growing brain/CNS and heart tissue may not, however, escape entirely unscathed. The fetus is protected from death and is live-born but is more prone to diseases later in life [33]. Various studies have supported barker hypothesis.

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6. Epidemiology studies

Epidemiology studies have shown that markers of malnutrition such as frank intrauterine growth retardation (IUGR), low birth weight, or small for gestation age (SGA) strongly predict the subsequent occurrence of hypertension, hyperlipidemia, insulin resistance, type 2 diabetes, and ischemic heart disease, in adult life.

It has been shown that fetuses that are growth retarded during the first trimester of development are three times more likely to be obese as adults. In the case of premature infants, at the age of 4–10 years, these children who had been born prematurely had an increase in their acute insulin response, which compensated for insulin resistance. This decrease in insulin sensitivity may predispose premature infants to type 2 diabetes mellitus in adulthood, as already demonstrated among infants born at term who are SGA [33, 34], that compared with young people from the same region of Finland who are born after a pregnancy, and young people who ranged from 18 to 27 years of age who were preterm infants have become higher in chronic insulin resistance and more prone to glucose and high blood pressure [35]. Preterm births happen on their own early means that some of what would be the third trimester is lost. This is typically a sensitive period for programming and certainly a time during which the final aspects of organogenesis occur. This is explained by spending in the more difficult environment of a hospital setting in which there are many toxic substances as well as nutritional challenges. Now that many more extremely premature babies are surviving to adulthood, ensuring their health is crucial [36]. On the other hand excessive energy supply to the fetus or infant also has adverse consequences so a U shape works similarly at the tow ends of the malnutrition (Figure 1).

Figure 1.

Excessive energy supply to the fetus or infant also has adverse consequences.

Maternal hyperglycemia may lead to fetal hyperinsulinemia and fat deposition that influence the fetus. Offspring of obese women or women with diabetes are at greater risk for developing metabolic disorders themselves, even during childhood [37, 38, 39].

As a consequences, an infant usually has about 5–6 billion fat cells during the third trimester when a mother is pregnant. This number increases during early childhood and puberty, resulting in a healthy adult body possessing 25–30 billion fat cells [40]. Meanwhile, excessive energy supply to the fetus or infant will increase the potential of becoming obese. Babies who depend on milk factory have the highest amount of energy, leading to an increase in body weight than children who were breastfed; it can affect the increase in obesity and its risks later in life [41]. This complicate the long-term effects due to Prenatal and postnatal nutrition during early infancy. In one study, carotid intima-media thickness at 9 years of age in 216 children of European ancestry whose mothers had energy intake in the lowest quartile during early or late pregnancy was higher than that of children whose mothers had intake in the highest quartile, implying that maternal nutrition during pregnancy can affect the subsequent risk of atherogenesis in the offspring [42].

Thus, obesity comes from an increase in the numbers of fat cells, or adipocytes, and is hence due to a shift in the activity of certain genes during development. Because to maternal malnutrition during pregnancy, the offspring later suffering from obesity in the middle of the abdomen and lack of muscle mass, change the sensitivity of insulin, change in hepatic metabolism, decreased number of nephrons, high blood pressure, with a change in appetite regulation, activity level, and control of nerve endocrine glands [42]. There are critical periods in the differentiation and maturation of the tissues and cells involved in organogenesis throughout gestation and early postnatal life. The examples of the kidney, heart, and pancreas were obvious since their functional units are formed prenatally in the human fetus [43].

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7. Animal studies

Embryos of pregnant rats fed with a low-protein diet during the preimplantation period (0–4.25 days) show altered development in multiple organ systems; the offspring had reduced birth weights, relatively increased postnatal growth, and adult-onset hypertension [44].

Obviously, the preconception period is particularly sensitive, so that even the required nutrient deficiencies (B12 or folate or methionine) can have an effect on metabolism and blood pressure later in sheep [45]. It has recently been reported that the imbalance in B12 folic acid status and pain during pregnancy contributes to insulin resistance in childhood in humans [46].

Glucocorticoid management to pregnant rats at specific times during pregnancy to cause high blood pressure [47], insulin resistance in offspring later in life [48], changes in gene expression in the developing brain of offspring, and increased sensitivity to stress after the birth have been reported. The administration of glucocorticoids to the pregnant rat at specific points during gestation has been reported to cause hypertension [47], insulin resistance in the offspring in later life [49], alterations in gene expression in the developing brain of the offspring, and increased sensitivity to postnatal stress [50].

In mice, it may lack nutrition during pregnancy to breed showing later the following: visceral obesity, reduced lean body mass, changes in insulin sensitivity, different hepatic metabolism, decreased numbers of nephrons, high blood pressure, and altered endothelial function, together with altered appetite regulation, level of activity, and neuroendocrine control [51, 52, 53, 54].

There are critical periods in the differentiation and maturation of the tissues and cells involved in organogenesis throughout gestation and early postnatal life. The examples are seen in the kidney, heart, and pancreas, since their functional units are formed prenatally in the human fetus.

In the kidney, maternal dietary imbalance may lead to developmentally induced deviations from the optimal ratio of body mass to nephron number. This increased risk of inadequate renal function and hypertension in later life [54]. A predisposition to renal failure and a potentially reduced life span are predicted [55]. In the pancreas insulin secretion is also affected. Nutritional stress in pregnant rats reduces the growth of the endocrine pancreas during organogenesis and increases beta-cell apoptosis [55], leading to hyperglycemia and impaired insulin secretion when the offspring become adults. In the adult male rat offspring of mothers on a protein-restricted diet, low birth weight is associated with reduced expression of components of the insulin signal transduction pathway in the skeletal muscle [56]. Similar abnormalities have been reported in infants of low birth weight, and together with the developmentally induced reduction in skeletal muscle mass, these abnormalities might contribute to later insulin resistance.

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8. Programming

Developmentally induced epigenetic modifications of DNA are generally stable during the mitotic cell divisions that continue throughout a lifetime. So, developmental plasticity of fetus through cell-cell interaction can be understood as a set of programs. “Programming” is the term used to describe lifelong changes in function that follow a particular event in an earlier period of the life span. Evolutionary plasticity requires a constant modification of genetic expression that appears to be mediated, at least in part, by genetic processes such as epigenetic mechanisms as cells use to control gene expression by virtue of DNA methylation. The role of DNA methylation in gene expression can be found in Phillips [57], and by a histone modification which is a histone protein includes methylation that can impact gene expression [58].

Several studies show that skeletal muscle can be programmed, where early exposure to environmental stimuli leads to a constant change in the skeletal muscle phenotype in later life. This has been demonstrated in mammalian models where reduced nutrient availability during pregnancy weakens muscle fibers, muscle and skeletal formation (white/red fiber ratios), and birth size [59]. Epidemiological studies in human aging groups also suggest that low birth weight and gestational malnutrition are closely related to reduced muscle size, skeletal strength, and aging [59, 60].

This refers to changes in gene expression due to nongenetic structural alterations of DNA and/or histones [58]. So, remember that cell-cell interaction can be transferable in the fetus so memory of active person eventually will be available later in life for the offspring babies [58]. Thus, developmental plasticity requires both the genome and the genetic variability of the environment interactively by the mature phenotype and determines the sensitivity and subsequent environmental factors and the subsequent risk of the disease affects [61]. The effects of maternal nutrition and behavior clearly target the promoter regions of specific genes rather than being associated with global changes in DNA methylation. DNA modulates the rate of transcription to messenger RNA. The phenotypic effects of epigenetic modifications during development may not manifest until later in life [62].

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9. Hormones

It plays an important role in childhood growth and continues to have anabolic effects in adults. As the stress hormone, norepinephrine affects the brain’s amygdala, where attention and responses are controlled. It is also based on norepinephrine response to fight or flight, in addition to epinephrine, which raises the heart rate directly, leading to the release of glucose from energy stores and increasing blood flow to the skeletal muscles. It increases the supply of oxygen to the brain [63]. Glucagon is a peptide hormone, produced by alpha cells of the pancreas that raises blood glucose levels. Its main tasks are to increase blood sugar through protein conversion in the liver (gluconeogenesis). Suppress the immune system and help with fat, protein, and carbohydrate metabolism [64]. It also affects the density of the bones negatively, and it is possible to use cortisone in various forms to treat a variety of diseases.

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10. Conclusion

The term used to describe lifelong changes in function that follow a particular event in an earlier period of the life span is called programming. Nevertheless, the previous information may have a significance of pediatric obesity endocrine abnormality. GH-IGF-1 axis is partially responsive for the signal to enhance muscle and bone development. Growth hormone (GH) response to exercise may be weak in obesity and may not appear until later in life, especially if they affect genes that are responding to subsequent environmental responses, such as high-fat diet. I do not know how the genetic change instigated development window in the main systems. Exercise is the best way to do this when you exercise regularly, and you build stronger muscles, even if you do not work out with weights. Muscles use more calories than fat throughout the day, even while you are resting. Fat cells of unhealthy obese were larger than those of any other group. It was swollen and full of inflammation. The collapse and filling of their fat stores were disabled and showed a closer look that their mitochondria were not functioning well causing loss of muscle power. This is due to fat cell accumulation which reduces its ability to burn fuel and produce adenosine triphosphate, or ATP, the body’s energy currency. It is natural that the behavior of the human being and his attitude of life inert to be aware of the importance of physical activity and live in the healthy lifestyle system in the prenatal stages. Thus, healthy genetic modification will be inherited for future generations.

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Written By

Hashem Kilani, Abdulsalam Al-Za’abi, Areej Kilani and Laila Kilani

Submitted: July 17th, 2018 Reviewed: June 6th, 2019 Published: September 6th, 2019