1,431 research outputs found

    Use of HDFx, a Novel Immunomodulator, to Stop the Germs from Winning in Hospitals and on The Battlefields : The Dangers of Antibiotic Resistance

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    Getting admitted to a civilian or battlefield hospital these days often poses considerable risks and dangers. The ever-growing number of emerging diseases worldwide makes treatment of patients difficult and sometimes impossible. Many antibiotics are no longer effective against the simplest infections, which result in further hospitalizations with increased costs to the patients and governments worldwide. Microorganisms of prime concern include methicillin-resistant Staphylococcus aureus, Clostridium difficile, multidrug and extensive drug-resistant Mycobacterium tuberculosis, Neisseria gonorrhoeae, and carbapenem- resistant Enterobacteriaceae, as well as bacteria that produce extensive spectram beta-lactamases, such as E. coli. An unusual decline in the discovery of new and effective antibiotics, these days, is only making matters worse

    Synthetic Vasopressin and Oxytocin Analogs and Their Potential Use in Hemorrhagic, Traumatic and Septic Shock: A Personal Perspective

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    As one of us has stated many years ago, “shock is a significant and sustained loss of effective circulating blood volume. It will eventuate in hypoperfusion of critical peripheral tissues, thus leading to a deficit in transcapillary exchange function in critical organ regions. Clinically, there are five major types of circulatory shock: cardiogenic; septic; distributive; anaphylactic; and hypovolemic. Hypovolemic shock (HS) is, primarily, due to a marked decrease in venous return, falling arterial blood pressure, and ventricular preload, and usually is caused by hemorrhage, dehydration, excessive diarrhea, trauma, excessive fluid loss from severe burns, increased positive intrathoracic pressure, excessive urinary fluid loss resulting from diuretics, side effects of many chemotherapeutic agents and radiation in cancer patients, or depressed vasomotor tone in the microcirculatio

    Genotoxic Effects of Magnesium Deficiency in the Cardiovascular System and their Relationships to Cardiovascular Diseases and Atherogenesis

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    The authors present evidence for a novel, new hypothesis whereby magnesium deficiency (MgD) acts as a genotoxic agent which probably causes numerous, hertofore, unrecognized consequences, even over a short-term, on the physiological, molecular and biochemical machinery of cardiovascular tissues and cells. The end result of these genotoxic effects of MgD probably plays important roles in the etiology and generation of diverse cardiovascular diseases, atherosclerosis, inflammation, and strokes via alterations in the epigenome of cardiovascular tissues and cells. The importance of adequate water-borne and dietary levels of Mg is emphasized

    Why Do Chemotherapeutic Drugs and Radiation Induce Cardiomyopathy and Cardiac Failure in Cancer Patients: Is This a Consequence of Unrecognized Hypomagnesemia and Release of Ceramides and Platelet-Activating Factor?

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    The following is an excerpt from the text: Almost four decades ago [13], two of us pointed out that there was a scattered number of clinical studies that were beginning to indicate that at least three of the chemotherapeutic drugs (i.e., cisplatin, vinbastine, and bleomycin) appeared to suggest that chemotherapeutic anticancer drugs may deplete the body of magnesium (Mg) [for references and review, see [1, 2, 3, 12]. Ever since we suggested the potential danger of these drugs to the heart and cardiovascular system[13], a growing body of evidence has borne-out these initial dangers to cancer patients [e.g., for reviews see [4-11]. It appears from recent studies that cancer patients receiving cardiac transplants, who had taken chemotherapeutic drugs and/or radiation often showed unexplained, worsened depletion of Mg [for recent review, see [12]. How and why could depletion of body Mg stores, and Mg depletion from the heart and blood vessels, cause cardiac arrhythmias, elevated arterial blood pressure, prolonged QT intervals, coronary arterial vasospasm, myocardial ischemic events, myocardial infarctions, and sudden-cardiac death (SCD)

    Exposure to High Levels of Noise Poses Hazards and Risks for Development of Hypertension and Heart Disease: Potential Roles of Unrecognized Ionized Hypomagnesemia and Release of Ceramides and Platelet-Activating Factor

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    It has been demonstrated in numerous human and animal studies that audiogenic stress (AS) can induce elevation of arterial blood pressure and cardiac damage and that noise –induced hearing loss may be associated with alterations in magnesium (Mg) metabolism. Our laboratories, over a period of approximately 40 years, have been investigating why AS causes high blood pressure and cardiac damage. This review focuses on a number of newer discoveries on why AS causes dysfunctions of the cardiovascular system (CVS) This review discusses the pivotal physiological and biochemical importance of Mg to body health and the fact that most Americans and Europeans are deficient in daily Mg intake which perforce can cause severe dysfunctions of the CVS. Our ongoing studies clearly provide a solid microcirculatory basis for how and why AS above 65dB(A) often induces elevated blood pressure and cardiac damage. We review a body of data that points to the fact that AS does the latter, but appears to do so because noise stress levels result in Mg deficiency followed by release of certain sphingolipids (e.g., ceramides) and generation and release of platelet- activating factor (PDF). It is our opinion that all people exposed to high degrees of noise stress should be monitored for cardiovascular functions, ionized Mg levels, blood ceramide levels and levels of PDF. Lastly, we believe all people exposed to high levels of AS (i.e., maintenance people and pilots on aircraft carriers, musicians [particularly at rock concerts], motorman and conductors on trains and subways, construction site workers, etc.) should have at least the equivalent daily intake of 500-600 mg of Mg/day

    Potential Roles of Magnesium Deficiency in Inflammation and Atherogenesis: Importance and Cross-Talk of Platelet-Activating Factor and Ceramide

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    Epidemiologic studies in North America and Europe have shown that people consuming Western-type diets are low in magnesium (Mg) content (i.e., \u3c 30 - 65% of the RDA for Mg); most such diets in the USA show that 60 - 80% of Americans are consuming only 185 - 235 mg/day of Mg. Low Mg content in areas of soft-water, and Mg-poor soil, is associated with high incidences of ischemic heart disease (IHD), coronary artery disease, hypertension, and sudden cardiac death (SCD). It is clear that the leading underlying cause of death worldwide is atherosclerosis. Importantly, both animal and human studies have shown an inverse relationship between dietary intake of Mg and atherosclerosis. The myocardial level of Mg has consistently been observed to be lower in subjects dying from IHD and SCD in soft-water areas than those in hard-water areas. Over the past 20 years, our laboratories, using several types of primary cultured vascular smooth muscle (VSM) cells, and myocardial cells, demonstrated that declining levels of extracellular Mg ([Mg2+]0) activated several enzymatic pathways to produce increases in cellular sphingolipids, particularly ceramides which are known to exert numerous types of cardiovascular manifestations including inflammatory effects; the latter play important roles in atherogenesis and cardiovascular diseases. Approximately 20 years ago, we reported that low [Mg2+]0 caused formation of platelet-activating factor (PAF) as well as other types of PAF-like molecules and suggested that these molecules might be causative agents in low Mg2+- induced IHD and SCD. Herein, we review results and data from our labs which strongly support roles for ceramides, PAF and PAF-like lipids in low [Mg2+]0-induced IHD and SCD

    Is the High Frequency of Postoperative Atrial Fibrillation after Cardiac and Lung Surgeries Related to Hypomagnesemia and Releases of Ceramides and Platelet-Activating Factor?

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    The authors discuss the possible role of hypomagnesemia, ceramides and platelet-activating factor in the incidence of postoperative atrial fibrillation after cardiac and lung surgeries

    Euphoria from Drinking Alcoholic Beverages May Be Due to Reversible Constriction of Cerebral Blood Vessels: Potential Roles of Unrecognized Ionized Hypomagnesemia, and Release of Ceramides and Platelet-Activating Factor

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    The authors discuss the feeling of euphoria when drinking alcohol. They summarize studies that suggest this feeling is due to blood vessel constriction, and explain why they believe that the specific mechanism that results in euphoria is the rapid, reversible release o free magnesium ions ([Mg2+]) coupled to the release of ceramides and platelet-activating factor (PAF)

    Why is Postoperative Atrial Fibrillation Difficult to Prevent and Treat: Potential Roles of Unrecognized Magnesium Deficiency and Release of Ceramide and Platelet-Activating Factor

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    Heart failure is a major cause of morbidity and mortality whose costs impose staggering health-care costs and often lengthy hospitalizations. Post-operative atrial fibrillation (POAF) represents a leading cause for heart failure, particularly after cardiac and lung surgeries. Although PAOF is a common cardiac arrhythmia, it is impossible to predict. As the worldwide population is aging, the incidence and prevalence of PAOF is growing. Identifying mechanisms for PAOF is attracting a considerable amount of research with no agreement on the mechanism(s). Our research on the heart and cardiovascular system, over the past 50-plus years, leads us to believe that major causes of PAOF may be an underlying magnesium deficiency (MgD) coupled to a generation/release of ceramides and platelet-activating factor (PAF). Herein, we review reasons behind our hypothesis and suggestions for testing its validity
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