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The design is based on the fact that viral vectors cheap apcalis sx 20 mg mastercard erectile dysfunction and diabetes treatment, such as poxviruses purchase apcalis sx 20mg on line erectile dysfunction treatment news, are powerful at boosting previously primed T-cell responses against intracellular pathogens apcalis sx 20mg amex erectile dysfunction after age 40. Besides order apcalis sx 20 mg with amex erectile dysfunction treatment home, the strategy is feasible and practi- cal in low-resource high-burden countries (McShane 2005). Most importantly, this pioneer study also raises highly sensitive protocol issues and, in particular, ethical issues (Ibanga 2006). They gathered a large body of evidence on the evolutionary sequence of events leading to modern vaccine variants. These mutations might have been responsible for a gradual loss in immunogenicity and protection ability. As a result, less protective strains for vaccine production might have unintentionally been selected through time (Brosch 2007). The fulfillment of this chronology is highly dependent upon the availability of reliable biomarkers of effective vaccination. This unprecedented initiative provides a robust platform for driving the global research agenda toward the most compelling gaps in knowledge, and readily translating scientific findings into patient care and public health improvement. Altogether, these merging initiatives have started to awaken the concern of public health authorities and research agencies at the national level in medium- and low-resource countries. The tubercle bacillus is both an amazing creature and a formidable enemy that has proven hard to conquer. Medical research itself has developed into a complex and engaging living creature whose evolution is driven by selective pressure. Synergic efforts, interdisciplinary approaches, and translational research are expressions of its adaptive response. Light emitting diodes for auramine O fluorescence microscopic screening of Mycobacterium tuberculosis. A new vaccine against tuberculosis shows greater protection in a mouse model with progres- sive pulmonary tuberculosis. Beijing genotype of Mycobacterium tuber- culosis is significantly associated with human immunodeficiency virus infection and mul- tidrug resistance in cases of tuberculous meningitis. Rapid detection of resistance in Mycobacterium tuberculosis: a review discussing molecular approaches. Char- acterization of clonal complexity in tuberculosis by mycobacterial interspersed repetitive unit-variable-number tandem repeat typing. Increased vaccine efficacy against tuberculosis of recombinant Mycobacterium bovis bacille Calmette-Guerin mutants that secrete liste- riolysin. Drug susceptibility testing of Mycobacterium tuberculosis: a neglected problem at the turn of the century. Candidate biomarkers for discrimination between infection and disease caused by Mycobacterium tuberculosis. Simultaneous detection and strain dif-ferentiation of Mycobacterium tuberculosis for diagnosis and epidemiology. A marked difference in pathogenesis and immune response induced by different Mycobacterium tuberculosis genotypes. Combinations of R207910 with drugs used to treat multidrug-resistant tuberculosis have the potential to shorten treatment duration. Comparison of a conventional antimicrobial suscepti- bility assay to an oligonucleotide chip system for detection of drug resistance in Myco- bacterium tuberculosis isolates. Current perspectives on drug sus- ceptibility testing of Mycobacterium tuberculosis complex: the automated nonradiometric systems. Comparison between molecular epidemiology, geographical regions and drug resistance in Mycobacterium tuberculosis strains isolated from Iranian and Afghan patients. The W-Beijing lineage of Mycobacterium tuberculosis overproduces triglycerides and has the DosR dormancy regulon constitutively upregulated. Mixed infection and clonal representative- ness of a single sputum sample in tuberculosis patients from a penitentiary hospital in Georgia. Sputum processing methods to improve the sensi- tivity of smear microscopy for tuberculosis: a systematic review. Proposal for standardization of optimized mycobacte- rial interspersed repetitive unit-variable-number tandem repeat typing of Mycobacterium tuberculosis. Impact of drug resistance on fitness of Mycobacterium tuberculosis strains of the W-Beijing geno- type. Public health impact of isoniazid-resistant Mycobacterium tuberculosis strains with a mutation at amino-acid position 315 of katG: a decade of experience in The Netherlands. Molecular epidemiology of tuberculosis and other mycobacterial infec- tions: main methodologies and achievements. The designations employed and the presentation of the material in this publication do not imply the expression of any opinion whatsoever on the part of the World Health Organization concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. Dotted lines on maps represent approximate border lines for which there may not yet be full agreement. The mention of speciﬁc companies or of certain manufacturers’ products does not imply that they are endorsed or recommended by the World Health Organization in preference to others of a similar nature that are not mentioned. Errors and omissions excepted, the names of proprietary products are distinguished by initial capital letters. All reasonable precautions have been taken by the World Health Organization to verify the information contained in this publication. However, the published material is being distributed without warranty of any kind, either expressed or implied. A small number of African countries have The fndings in the World Malaria Report 2010 further been able to rapidly scale up malaria diagnostic testing strengthen the business case for investing in malaria control. Only by knowing where our enemy lurks, been delivered to sub-Saharan Africa between 2008 and identifying the places where we still have malaria, can we 2010, enough to protect 578 million people. Resurgences of malaria were observed in parts of at least three African These prevention eforts are producing a measurable countries. The annual number of malaria cases not known, but likely refect some combination of natural and deaths continues to decline, especially in Africa. These programme number of countries that have successfully cut their malaria failures are a pointed reminder of what could happen if burden in half over the past decade continues to rise. For we reduce our vigilance and do not follow through on the frst time, not a single case of falciparum malaria was our collective commitments. One by one, high coverage rates with malaria prevention and control we are counting down the number of countries endemic measures may prove even more challenging than having for malaria. Morocco and Turkmenistan as being free from malaria, and was able to add the names of these countries to the Ofcial We cannot let this momentum slip. The international community needs to ensure sufcient and predictable Major changes in the way we tackle malaria are global funding to meet ambitious targets set for malaria occurring quickly. This is the year when we fnally declared control as part of the drive to reach the health-related that everyone with suspected malaria has a right to a Millennium Development Goals by 2015. For too long in too many places, fever has been The will to sustain the gains that we have made in malaria equated with malaria. Our eforts at prevention must come not only from global health leaders and from have produced real changes in malaria transmission, politicians, but from afected communities. If communities and most cases of fever, even in Africa, are no longer due can know the true burden of malaria, and can see the results to malaria. This is another clear marker of progress, and of prevention and control eforts, then the will to eliminate another sign of the way control strategies are constantly and ultimately eradicate malaria will never fade. We have inexpensive, quality-assured rapid diagnostic tests that can be used all the way down to the community level. Staff from the (Iran (Islamic Republic of)); Muthana Ibrahim (Iraq); National Malaria Control Global Fund assisted in the conduct of rapid impact assessments presented Programme (Kenya); Nurbolot Usenbayev (Kyrgyzstan); Kongxay Luang- in Chapter 6 on the impact of malaria control. Madeleine Thomson, Pietro phengsouk (Lao Peoples Democratic Republic) Tolbert Geewleh Nyenswah Ceccato, and Michael Bell at International Research Institute for Climate and (Liberia); Andry Joeliarijaona Rakotorahalahy (Madagascar); Misheck Luhanga Society, The Earth Institute at Columbia University, New York, and Hannah (Malawi); Christina Rundi (Malaysia); Klenon Traoré (Mali); Ba Mamadou Gould and Steve Yoon at Centers for Disease Control and Prevention, Atlanta Dit Dialaw (Mauritania); Héctor Olguín Bernal (Mexico); Samuel Jose Alves prepared analysis of the relationship between climate and disease trends Mabunda (Mozambique); Khin Mon Mon (Myanmar); P. Baquilod (Philippines); Division Of Communicable Disease Control (Republic Erin Eckert (Macro International Inc.
Also 20mg apcalis sx amex erectile dysfunction jason, in some cases of gallbladder disease purchase 20mg apcalis sx mastercard erectile dysfunction protocol book, disease trusted apcalis sx 20mg erectile dysfunction pills pictures, infection may extend to the pancreas and cause abnormal activation of the pancreatic enzymes generic apcalis sx 20 mg on line erectile dysfunction pills for sale. In either circumstance, the pancreas suffers destruction by its own juice, and the outcome can be fatal; this condition is known as acute pancreatitis. The pancreas also functions as an endocrine gland, producing the hormones insulin and glucagons that regulate sugar metabolism. Digestion and Absorption of Carbohydrates, Fats, and Proteins Digestion Digestion, a complex process that occurs in the alimentary canal, consists of physical and chemical changes that prepare food for absorption. Mechanical digestion breaks food into tiny particles, mixes them with digestive juices, moves them 329 Human Anatomy and Physiology along the alimentary canal, and finally eliminates the digestive wastes from the body. Chewing or mastication, swallowing or deglutition, peristalsis, and defecation are the main processes of mechanical digestion. Chemical digestion breaks down large, nonabsorbable food molecules−molecules that are able to pass through the intestinal mucosa into blood and lymph. Chemical digestion consists of numerous chemical reactions catalyzed by enzymes in saliva, gastric juice, pancreatic juice, and intestinal juice. Carbohydrate Digestion Very little digestion of carbohydrates (starches and sugars) occurs before food reaches the small intestine. Salivary amylase usually has little time to do its work because so many of us swallow our food so fast. But after the food reaches the small intestine, pancreatic and intestinal juice enzymes digest the starches and sugars. A pancreatic enzyme (amylase) starts the process by changing starches into a double sugar, namely, maltose. Three intestinal enzymes−rnaltase, sucrase, and lactase−digest double sugars by changing them into simple sugars, chiefly glucose (dextrose). Maltase digests maltose (malt sugar), sucrase digests sucrose (ordinary cane sugar), and lactase digests lactose (milk sugar). The end product of carbohydrate 330 Human Anatomy and Physiology digestion is the so-called simple sugar; the most abundant is glucose. Two enzymes (renin and pepsin) in the gastric juice cause the giant protein molecules to break up into somewhat simpler compounds. Pepsinogen, a component of gastric juice, is converted into active pepsin enzyme by hydrochloric acid (also in gastric juice). In the intestine, other enzymes (trypsin in the pancreatic juice and peptidases in the intestinal juice) finish the job of protein digestion. When enzymes have split up the large protein molecule into its separate amino acids, protein digestion is completed. Fat Digestion Very little carbohydrate and fat digestion occurs before food reaches the small intestine. Most fats are undigested until after emulsification by bile in the duodenum (that is, fat droplets are broken into very small droplets). After this takes place, pancreatic lipase splits up the fat molecules into fatty acids and glycerol (glycerine). For example, the name amylase indicates that the enzyme digests carbohydrates (starches and sugars), protease indicates a protein- digesting enzyme, and lipase means a fat-digesting enzyme. When carbohydrate digestion has been completed, starches (polysaccharides) and double sugars (disaccharides) have been changed mainly to glucose, a simple sugar (monosaccharide). Absorption After food is digested, it is absorbed; that is, it moves through the mucous membrane lining of the small intestine into the blood and lymph. In other words, food absorption is the process by which molecules of amino acids, glucose, fatty acids, and glycerol goes from the inside of the intestines into the circulating fluids of the body. As long as food stays in the intestines, it cannot nourish the millions of cells that compose all other parts of the body. Their lives depend on the absorption of digested food and its transportation to them by the circulating blood. Table 11-1 Chemical Digestion Digestive juices and Substance Digested Resulting Products* enzymes (or hydrolysed) Saliva Starch (Polysaccharide) Maltose (disaccharide) Amylase Gastric Juice Proteins Partially digested Protease (Pepsin) proteins plus hydrochloric acid Pancreatic Juice Proteins (intact of Peptides Protease (trypsin) and partially digested) Fatty acids, amino Lipase Fats emulsified by bile acids and glycerol Amylase Starch Maltose Intestinal Juice Amino acids Peptidases Peptides Glucose and fructose Sucrase Sucrose (cane sugar) (simple sugars) Lactase Lactase (Milk sugar) Glucose and galactose Maltase Maltase (malt sugar) (Simple sugars Glucose *Substances underlined are end products of digestion (that is, completely digested foods ready for absorption) 333 Human Anatomy and Physiology Review Questions 1. If you inserted 9 inches of an enema tube through the anus, the tip of the tube would probably be in what structure? The urinary system consists of: - Two kidneys: this organ extracts wastes from the blood, balance body fluids and form urine. They 338 Human Anatomy and Physiology are protected at least partially by the last pair of ribs and capped by the adrenal gland. On the medial concave border is the hilus (small indented area) where blood vessels, nerves & ureters enter and leave the kidney. Covering and supporting each kidney are three layers of tissue: • Renal capsule – innermost, tough, fibrous layer • Adipose capsule – the middle layer composed of fat, giving the kidney protective cushion. The renal pelvis is the large collecting space with in the kidney formed from the expanded upper portion of the ureters. Filters (by hydrostatic presure) water, dissolved substances (minus most plasma proteins, blood cells) from blood plasma. The major functions of the kidneys are: 343 Human Anatomy and Physiology All the functions are directly or indirectly related to the formation of urine. The series of events leads to: - To the elimination of wastes - Regulation of total body water balance. Tubular secretion Average Comparison of filtration, re-absorption and excretion, here variation in urine composition will occur during variation in the daily diet, fluid intake, weather and exercise. The ureters pass between the parietal peritoneum and the body wall to the pelvic cavity, where they enter the pelvic cavity. The lumen of the ureters is composed of three layers: - Innermost, Tunica Mucosa - The middle, Tunica Muscularis (made of smooth muscle) - The outer, Tunica Adventitia 12. It is located on the floor of the pelvic cavity and 346 Human Anatomy and Physiology like the kidneys and ureters. The opening of ureters and urethra in the cavity of the bladder outline triangular area called the trigone. At the site where the urethra leaves the bladder, the smooth muscle in the wall of the bladder forms spiral, longitudinal and circular bundles which contract to prevent the bladder from emptying prematurely. Far there along the urethra in the middle membranous portion a circular sphincter of voluntary skeletal muscle form the external urethral sphincter. In male it pass through prostate, membranous portion (pelvic diaphragm muscle), spongy portion (that pass through corpus spongosus) and open at the tip of penis. However, it is composed of mainly water, urea, chloride, potassium, sodium, cretinin, phosphate, sulfates and uric acid. Proteins, glucose, casts (decomposed blood) and calculi from minerals are abnormal if present in urine. To maintain the proper osmotic concentration of the extra cellular fluid to excrete wastes and to maintain proper kidney function the body must excrete at least 450ml of urine per day. The volume and concentration of urine is controlled by: - Antidiuretic hormone - Aldestrone - The Renin – angiotensin mechanism 349 Human Anatomy and Physiology 12. Steps of urination are: Conscious desire to urinate Pelvic diaphram muscle relax Smooth muscle of Urinary bladder neck Moves Urinary bladder down, outlet Opens, wall Contracts & urine stretch, and wall stretch ejects Receptors are stimulated 350 Human Anatomy and Physiology Study Questions 1. The apex of each renal pyramid end in the a) Cortical region b) Papilla c) Juxta medullary region d) Capsule e) Tubule 2. The inner most layer of the ureters is the a) Mucosa b) Muscularis c) Adventitia d) Longitudinal layer e) Circular layer 3. The kidney function in all of the following except a) Acid – base balance b) An endocrine organ c) By removing metabolic waste d) By removing excess carbon dioxide e) By maintaining osmotic concentration 4.
Humans and animals have abundant normal fora (microbes) that usually do not produce disease under normal healthy condition generic apcalis sx 20 mg on line impotence existing at the time of the marriage. The pathogenesis of bacterial infection includes initiation of the infectious process and mechanisms that lead to the development of signs and symptoms of disease effective 20mg apcalis sx erectile dysfunction aids. The virion consists of nucleic acid surrounded by a protein coat called capsid which protects the nucleic acid from deleterious environment and to introduce viral genome into the host cells by adsorbing readily to the cell surface buy generic apcalis sx 20mg erectile dysfunction pills list. They may be sporadic like Mumps order apcalis sx 20mg with mastercard erectile dysfunction age 35, endemic like Infectious hepatitis, epidemic like Dengue fever or pandemic like Infuenza. Depending on the clinical outcome, Viral infections can be classifed as unapparent (sub clinical) or apparent (clinical or overt) infections. Depending on the cell morphology fungi can be divided into four classes - i) Yeasts : Unicellular fungi which occur as spherical and reproduce by simple budding ii) Yeast like fungi : Grow partly as yeast and partly as elongated cells resembling hyphae form a pseudo mycelium iii) Moulds : True mycelia and they are reproduced by the formation of different types of spores. Superfcial mycoses are of two types - surface infections (only on dead layers of skin) and cutaneous infections (cornifed layer). Infectious diseases are caused by foreign substances like fungi, bacteria, virus or parasite, when they enter in to the human body. Though the disease by such pathogen affects the body for a shorter duration, the person may survive after loosing functions of some of the organ (eg. The immune system provides such freedom enjoyed by an individual, in order to keep them free from diseases. Immune system keep memory about the pathogens and when the same pathogen reenters a better immune response is produced. Recognition and destruction of the mutant cells that can become cancerous and this is known as Immunosurveillance. Normally, Immune system does not produce antibodies against its own body tissues (self antigens), called as Immune tolerance or Self recognization. Depending on the nature of response towards the pathogen, Immune system is broadly classifed into Natural and Acquired immunity. They developed from the bone marrow stem cells and give rise to two families of white blood cells namely the Myeloid cells (named after bone marrow) and the Lymphoid cells, which take their name from the lymphatic system. The lymphoid cells include T and B lymphocytes which get their maturation in different lymphoid organs. B-cell maturation begins in the liver (fetal) and continues within the bone marrow as maturation progresses (adult) and T cells complete their maturation in the thymus. Mechanisms involved in Natural immunity Skin barrier The skin covers and protects the body as a barrier to prevent invading pathogens. Intact skin prevents the penetration of most pathogens, by secreting lactic acid and fatty acids which lower the skin pH. Mechanical barriers Mucous membranes form the external layer where body is not covered with skin and it plays an important role in the prevention of pathogen entrance by traping them. Movement of the mucociliary process in the upper respiratory tract, the cilia in the eyelids act as escalators to remove the pathogens. Phagocytosis The ingestion (endocytosis) and killing of microorganisms by specialized cells called as phagocytes. Opsonization -The process by which microbes are coated by a molecule called opsonin which aids attachment of microbes to the phagocytic cells which facilitates phagocytosis. Neutrophils constitutively express ligands and receptors (L-selectin) which interact with reciprocal receptors and ligands on endothelial cells (P- and E-selectin). Neutrophil responds and move towards a group of molecules called chemo-attractants (chemical mediators) 146 and this process is called chemotaxis (chemical attraction). The phagocytes make its way through intact capillary walls and into the surrounding tissue by a process called diapedesis (emigration of phagocytes into tissues). Chemo-attractants include complement protein C5a, bacterial products, cytokines, lipid mediators from injured tissue. Capillary Unstimulated Neutrophil Adhesion Molecule C b3 Tissue trauma C b3 Diapedesis Release Mediators Chemotaxis C b3 Opsonin Opsonized (1) Pathogen Lysozyme C,a Attached to (2) Pathogen Pseudopode like structure (3) Formation of Phagolysozyme Endothelium (4) Fig 10. Neutrophil has three types of granules namely Primary granules ( contain serine proteases, lysozyme and phospholipase A ) Secondary granules ( include perforrin, elastase and collagenase) and Tertiary 2 granules ( contain gelatinase). Apart from these granules the phagocytes also posses a variety of oxygen dependent killing mechanisms. Neutrophils contain an enzyme called as myeloperoxidase, which can convert superoxide into hypochlorite ion which has a strong bactericidal activity. The role of macrophage is consider as frst order defence mechanism, as it engulf and kill more pathogens effciently. Liver - Kupffer cells Brain - Microglial cells Kidney - Mesangial cells Spleen - Splenic macrophages Peritoneum - Peritoneal macrophages. Infammation A localized protective reaction produced in tissue response to any irritation, injury or infection is called as infammation. Usually, the name of the tissue, organ and the region which develops infammation is suffxed with ‘itis’ for example conjunctivitis, gastritis and pharyngitis respectively. The infammatory response helps to mobilize the nonspecifc defense forces to the tissue space where pathogen is present. The damaged cells release chemical mediators such as histamine from the mast cells, which dilate the near by blood vessels. They get activated due to the tissue damage and this process leads to “walling off” the area and this helps to prevent spreading of the infectious material. It attaches to the target and releases a lethal burst of chemicals called as perforins that penetrate the cell wall. Interferon Interferons are proteins produced by body cells when they are invaded by viruses, is released into the bloodstream or intercellular fuid, in order to induce healthy cells to manufacture an enzyme that block viral replication. The complement system is the part of innate immune system plays an important defense against microorganisms, especially gram-negative bacteria. The complement system consists of a set of over twenty serum proteins which are getting activated as follows. The pathways include the classic pathway (C1qrs, C2, C4), the alternative pathway (C3, factor B, properdin) and these two pathways converge at the component C3. Generally, they take part in differentiating self and non self antigens and the presentation of processed foreign antigen to activate the T cells. It has the special ability to keep memory of frst time exposure of an antigen (primary immune response) and mounts better response when there is second time exposure of same antigen (secondary immune response). Natural (Due to natural entry of pathogen) Actively acquired Artificial (Due to artificially introduced antigen like immunization process) Natural (Baby receives the antibody synthesized by the Passively mother through mother’s milk acquired Artificial (Antibodies are introduced artificially) 150 10. Though the classifcation separates the cell mediated and humoral immunity with different cell types they do interact to bring an effective immune response. Specifc T-cells are stimulated to produce lymphokines that are responsible for the antigen-induced B-cells proliferation and differentiation. Through a process of clonal selection specifc B-cells are stimulated, the activated B-cell frst develops into a B-lymphoblast, becoming much larger and shedding all surface immunoglobulin. This terminal differentiation stage is responsible for production of primarily IgM antibody during the primary immune response. Upon subsequent encounter with antigen, these cells respond very quickly to produce large amounts of IgG, IgA or IgE antibody, generating the better secondary immune response. These stages are, of course, initiated upon encounter with antigen and activation by T-helper cell to secrete lymphokines. When high doses of antibody interact with the entire antigen’s epitopes thereby inhibits interactions with B-cell receptors. T cells are initially formed in the bone marrow and get its maturation and differentiation in the thymus gland.