By O. Armon. Southern California University of Health Sciences.
At the present stage of pharmaceutical industry development is the best level of pharmaceutical workers for using the informational technology ensures the implementation of mathematical planning experiment in scientific research cheap alendronate 35 mg without a prescription womens health first buffalo grove il. Because of intensification research discount alendronate 70mg line menopause without symptoms, the success of research and experimental work in pharmacy is based on the use age of mathematical planning scientific research in the field of new pharmacologically active substances synthesis as well as the development of opt imal composition cheap 70 mg alendronate overnight delivery women's health problems doctors still miss, technology dosage forms optimize quality control buy 70mg alendronate free shipping women's health issues depression, conducting biopharmaceutical research. Explore the use of mathematical methods planning for selection optimal compositions polymer shell tablets. The scientists-pharmacists use method of mathematical planning multifactor experiment for solving the optimization problem structure dyes and pigments in the dragee shell of tablets. This technique experimental design is the best method of solving the problem optimization shell color with a minimum number of experiments. Creating a new drug or new dosage form is a complex multistage process in experimental studies that may include long stage requires the use of mathematical method planning. Thus, for the development and implementation of new solid dosage forms in industrial environments using different group subsidiary substances for shell tablets: film forming agents, pigments, dyes, plasticizers, stabilizers, etc. In this studies the impact of many qualitative factors on the structure and properties of the polymer film plans using analysis of variance. Using this method, we can divide the total sum of observations squares on components that get due to the influence of various factors and their interaction. Since the tablet-core having a hydrophobic surface and photosensitive properties to the selection film forming agents be aware that the film has high adhesion to the surface and core tablets were protected from light. Therefore, in film forming agents qualities necessary to use different polymers: hypromellose, methylcellulose and polyvinyl alcohol. In addition, improving light protective properties of the film also introduced shell white substrate based polymer similar to that using a co lor coating. Thus, the creation of a medicinal product is complex multi- stage process of experimental research. Monte Carlo method is used at research of many processes in physics, chemistry, biology. Nuclear reactors settle accounts by this method, it is widely used in geophysics, economy, biology, ecology - for the solving of those tasks, wherever the analytical or numeral methods are not work from the high degree of complication. It is possible to get the arrays of random numbers with the different laws of distributing - even, normal, exponential and other with their help Aim. Different tasks for the decision of which the method of Monte Carlo is used are considered in our researches. The numeral experiment is made on verification of Einshtein-Smolukhovsky equation for diffusive processes. The numeral experiments are look the possibilities of Monte-Carlo method for modelling of different processes in physics, mathematics, biology. Monte-Carlo method can be using for solving of many tasks, which not possible to solve by traditional methods. Sample size determination is an important part of research planning in studies aimed at testing and confirmation of formal hypotheses. This task is particularly relevant for cost-effectiveness substantiation of the research and for its financial planning, that are integral parts of market researches, clinical trials, state public researches or studies, which are carried out under grants. The major part of methodical and teaching materials, instructions, and procedures proposed in the literature, as well as the methods implemented in specialized computer programs, focuses on planning methods of sample size evaluation for tasks of two-groups comparisons by some variable of interest, which is generally numeric. At the same time the problems of frequency assessment for qualitative feature in a single sample are insufficiently considered in the literature and implemented in specialized software. The aim of the work is to give a survey of methods for sample size determination in a case of a dichotomous feature occurrence frequency assessment, and to introduce the software tool, developed by authors, which allows executing appropriate calculations. Basic input parameters in the tasks under consideration are: confidence probability level, guess value of the expected frequency, and necessary precision of its estimate (width of confidence interval). At first the program gives user the possibility to choose one of confidence probability levels, which are most commonly used in practical researches (95%, 99% or 90). To calculate the sample size, which is ample for expected frequency assessment, accurate within given threshold, we use formula: 2 p (1 p) n Z , 2 2 I where n – required volume of sample; p – expected frequency of feature occurrence in the population; I – a half of confidence interval width (precision of frequency estimation); Z / 2 – standard Gaussian distribution quantile of / 2 order, where – type I error level (determined as 1 minus confidence probability); – operation of rounding to the nearest greater whole number. In cases, when researcher 277 has no assumptions about specific value of the frequency expected, we use formula given above with p 0. The current formula is most often cited in accessible literature sources as a single alternative to evaluate the necessary sample size for dichotomous variable expected frequency assessment in one sample. On the other hand, in situations when we know the total size of the population, the required number of observations may be considerably less, if it is calculated by formula: 1 2 1 4 I n , 2 N Z p (1 p) 2 where N stands for total population size. If the researcher‘s task is not in obtaining the confidence interval for the frequency, but in confirmation of the hypothesis that the incidence of a feature of interest in population is not greater than some expected value, then in cases when total size of population is unknown or vast the following formula should be used to calculate the smallest necessary sample size: ln n . Moreover, the last two formulae are preferable in cases when the expected frequency is close to 0 or to 1 (100%). In the proposed software tool the particular method of sample size calculation is selected proceeding from dialogue with the user, who specifies the goals and objectives of his experiment, and inputs certain parameters he wants to assess. The proposed software for sample size determination in various alternative experiments, relating to assessment of a feature incidence in the population, is supposed to be useful for clinical researchers, market research analysts, research engineers, quality control specialists and many others in their professional activity. One of prospective and challenging directions of our investigations is the software enhancement to other tasks of sampling studies planning (central tendency and variation estimation for numeric variables, among-groups comparisons of quantitative and qualitative variables, correlation power assessment, etc. Another prospective development direction is to upgrade present software tool user interface thought the instrumentality of object-oriented programming. A lot of researchers and young scientists in Ukraine are lacking the informative resources when they are performing their diploma or PhD projects. Any researcher can find genes associated with a condition, find variations with a clinical assertion for a condition, view genotype frequency for a gene or condition; catalogs and tools for bioactivity screening studies and a repository of chemical information, as well as a database of molecular pathways that provides links to relevant records in companion databases for participating compounds, proteins and genes. The National Center for Biotechnology Information is very powerful, advanced resource which provides access to biomedical and genomic information with very friendly and easy to use interface. Fuzzy logic arose up, as the third wave of the intellectual programming, in connection with the necessity of creation of expert systems, able to work in the conditions of vagueness and fuzzy of initial information. Such the tasks arise up in medicine, biology, economy and other areas of scitech, where basic data are poorly mathematically described or unreliable. Bases of simulation of human intellectual activity were found at the sixty years of the last century by the American scientist L. Zade, for the systems complication of which is excelled by some threshold level, exactness and practical sense become almost eliminating each other descriptions. Fuzzy logic describes character of human thought and chain of his reasoning more naturally, what traditional formal-logic systems. In a general view fuzzy logic operates linguistic variables by rules, clear a man and near on a structure to the ordinary natural language. Basic advantages of this approach are a comfort of presentation of information and universality. Kosko, any mathematical model can be approximated the system, built on fuzzy logic. Presently fuzzy logic found practical application in the different spheres of scitech: in defensive applications, at the design of economical, political, exchange and extra-ordinary situations. On the basis of fuzzy neuron networks the systems of support of passing of decision are developed. This is expert systems with a minimum of preliminary analytical work of man-expert. The software package FuziCalc, uniting the mathematical apparatus of fuzzy logic with spreadsheets, is presented particular interest. FuziCalc has a friendly interface, analogical an interface of Excel, acquaintance to the users. Its feature is possibility of description of fuzzy object in a cell, noting the object as «fuzzy» and building function of object distribution in the special window.
These authors conclude order 35mg alendronate fast delivery womens health specialist appleton wi, as does Inbau (45) order alendronate 35 mg visa women's health clinic gympie, that "truth serums" are successful on persons who would have disclosed their information anyway generic alendronate 70 mg visa women's health clinic pueblo co, and that the person who is lying will continue his deception under drugs discount alendronate 35mg with amex pregnancy 4 weeks. Neurotic patients were found to be eager to recover the events, they groped for an answer, and were upset at not being able to recall. In discussing the events surrounding the period of amnesia they would frequently become restless, perspire profusely, become tense and rigid, breathe rapidly, move convulsively, and sometimes cry out. The intensity of the emotion may become unbearable when the patient reaches the climax of the story. The malingerer rarely shows these emotional and physiologic reactions under sodium amytal. However, according to Grinker and Spiegel (37), there are some neurotic patients who show little overt anxiety and who block in the account of their experience as they approach the moment of trauma. In such cases, Grinker and Spiegel report that more than one session of narcosynthesis may be necessary to recover the trauma. This, then, appears to be the most effective procedure for differentiating hysterical amnesia from malingered amnesia. It -295- sometimes provides the malingering criminal with an apparently honorable way of divulging what he claims to have forgotten. Although narcoanalysis seems to help in differentiating neurotic and malingered amnesia, it cannot rule out the possibility of organic pathology. Sodium amytal will not lift amnesia due to brain disfunction, and there is some evidence that it will not restore memories to acutely psychotic individuals (12). Applications to Interrogation At first glance, interrogation would appear to be a situation where malingering is quite likely to be employed. The captive source is faced with the dilemma of which of two roles to play-that demanded by his country or that demanded by the enemy-and his selection of either role might result in serious sanctions, including loss of life. The simulation of incompetence offers a solution to this role conflict by enabling the prisoner to remain loyal to his country and by providing him with an alibi for not submitting to the enemy. However, a number of circumstances peculiar to the interrogation situation seem to operate in an opposite direction and may be influential in reducing the likelihood of malingering. These factors appear to have a restraining influence on the prisoner and a liberating one on the interrogator. As compared with the citizen, the prisoner must show greater restraint and care in adopting malingering as a solution because of his uncertainty of the effect of such a role. In civilian life, simulation is attempted partly because of the humanitarian values held by the society. The person hopes that he will be labeled mentally ill, and when this happens, he expects that no further demands will be made on him, that he will not be held responsible for his conduct, and that he will be treated with kindness and care. Mental illness may be considered deviationism or negativism, either in the culture in general or in the interrogation situation in particular. Moreover, the prisoner may have become convinced, and perhaps realistically, that his life depends on his worth to the enemy, and that if he cannot give information, he has no worth. This may make the prisoner reluctant to appear incompetent, or at least completely incompetent, and therefore would act to reduce the amount and degree of malingering. Thus, the prisoner is uncertain that simulation would -296- produce the desired effect, and indeed, there is the danger that if his ruse is accepted, the directly opposite effect might result. The prisoner may be restrained from or reluctant to initiate or continue malingering because of the nature of the prisoner-interrogator relatioaship. The relationship offers the potential for rather great intimacy, and therefore for the development of fear and guilt in the prisoner. Fear may not be as great a component in civil life since the malingerer is assured a great deal of protection. Many people are involved in his case, and appeals are always possible to courts, civil rights boards, mental health commissions, etc. The prisoner of war, however, may be placed in the custody of a single interrogator, or he may be made to believe that it is the interrogator alone who makes all the decisions about his well- being, his value to the enemy, and his fate. With one authority figure who has seemingly unlimited power, the game becomes more dangerous, since the sanctions for being caught in a deception may be immediate and great, and there is no recourse or appeal to other power figures. Thus, the fear of being found out should be greater in the interrogation situation; this should serve to reduce the amount of malingering attempted and possibly reduce the adequacy of the simulation that is attempted. Guilt may become involved because of the closeness which sometimes grows up between the interrogator and the prisoner. Although there may be intense hatred for the interrogator, it is not unusual for warm feelings also to develop. Under such circumstances, the person who attempts malingering may begin to feel that he is taking advantage of the interrogator and may feel some guilt for misleading the one person who seems to be interested in him and who is looking after his welfare. Guilt makes compliance more likely, or at least it increases the likelihood that the prisoner may drop his simulated role. For his part, the interrogator has fewer of the restraints and control than a psychiatric interviewer would have in a democratic society dedicated to humanitarian values. He can easily make the prisoner feel that his life is under his control, and that psychosis or the simulation of psychosis would be punished just as severely as any other type of resistance. Although persons charged with major crimes are malingering in increasing numbers to avoid imprisonment, -297- it seems that simulation by persons charged with less serious offenses is on the decline since these people have realized that being committed to a mental hospital for an indeterminate period can drag out longer than a delineated jail term. Also, the physical techniques for treating mental illness can be quite frightening to a patient; thus it is likely that a malingerer will think twice before allowing himself to be subjected to a course of electroshock treatment and be even more reluctant to undergo a lobotomy. The interrogator is especially free to use these devices as threats, whereas the civilian psychiatrist must consider many other factors. The interrogator has another advantage over his clinical counterpart in civilian life when it comes to reducing the amount of malingering in an entire group of men. When persons charged with crimes are placed together on the same ward while undergoing psychiatric observation prior to trial, there is a great deal of coaching and training occurring among them as they teach one another how to "bug out. The interrogator, however, can keep his prime sources separated so that there is no cross-fertilization, and also he can attempt to extinguish malingering in the group by exposing and punishing an unsuccessful malingerer. Thus he can give himself or the unit the reputation for being a shrewd detector of deception and a harsh punisher of such duplicity. Once the prisoner gets the feeling that his pretense is endangered, the interrogator may supply him with many face-saving devices which would allow him to relinquish the symptoms that prevent him from cooperating, but without forcing him to admit his guilt. Already mentioned was the technique of giving the prisoner "treatment" for his illness, one that is guaranteed to bring about a cure. Thus the prisoner may behave as if the pills or the electroshock did produce a cure or that the hypnosis or narcosis did allow him to recover his memory, and there will be no need to admit the malingering or suffer punishment for it. The prisoner may use this way out if he gets the impression that the interrogator is becoming wise or is demanding recovery. Another honorable way out for the prisoner could be to remain "ill" but not to allow the illness to interfere with the communication of relevant information. The interrogator might allow the prisoner to keep his simulated depression, delusions, or posturing and gesturing, but he would insist that these symptoms in no way interfere with his ability to recall and communicate important facts. To augment -298- this approach, the interrogator might "treat" only those symptoms which cause memory or communication difficulty, reassuring the prisoner that the other symptoms will remain for a while and that he will be hospitalized and be given more care and privileges than he might otherwise receive. This approach makes it possible for the prisoner to cooperate without revealing his deception, and it offers a substitute goal for the malingering — that of better treatment and privileges. Direct confrontation could conceivably produce a real psychic disorder, especially in those persons who are borderline psychotics to begin with and whose symptoms are exaggerations of their own latent tendences. As Hurst (44) and Eissler (22) point out, that which was feigned at one time may show up as a real illness at a later time. If forced compliance to the interrogator would produce more anxiety and guilt than would malingering, a serious disorder may be the alternative which the prisoner will take.
The structure of beta-globulin and its similarity to plasma retinol binding protein purchase alendronate 70mg online pregnancy and constipation. Structural and conformational basis of the resis- tance of D-lactoglobulin to peptic and chymotrypsin digestion generic alendronate 70mg on line pregnancy x ray. Characterization of microcapsules of -lactoglobulin formed by chemical cross linking and heat setting cheap alendronate 70 mg line women's health center doctors west. Preparation and properties of glutaraldehyde cross-linked whey protein-based microcapsules containing theophylline alendronate 35 mg mastercard pregnancy ovulation calculator. Use of whey protein beads as a new carrier for recombinant yeasts in human digestive tract. Fluorescence study of the curcumin-casein micelle complex- ation and its application as a drug nanocarrier to cancer cells. Formation of silk ﬁbroin nanoparticles in water-miscible organic solvent and their characterization. Characterization of the morphology and ther- mal properties of zein prolamine nanostructures obtained by electrospinning. Electrophoretic separation and charac- terization of gliadin fractions from isolates and nanoparticulate drug delivery systems. Formation of gliadin nanoparticles: Inﬂuence of the solubility parameter of the protein solvent. Alpha tocopherol encapsulation and in vitro release from wheat gliadin nanoparticles. Optimization and in vitro stability of legumin nanoparticles obtained by a coacervation method. Gelatin nanoparticles by two step desolvation – A new preparation method, surface modiﬁcations and cell uptake. Preparation and evaluation of drug loaded gelatin nanoparti- cles for topical ophthalmic use. Gelatin-coated magnetic iron oxide nanoparticles as carrier system: Drug loading and in vitro drug release study. Development, characterization and toxicity evalua- tion of amphotericin B loaded gelatin nanoparticles. Thermosensitive polymer-conjugated albumin nanospheres as thermal targeting anti-cancer drug carrier. Covalent attachment of apolipoprotein A-I and apolipoprotein B-100 to albumin nanoparticles enables drug transport into the brain. Evaluation of gliadins nanoparticles as drug delivery systems: A study of three different drugs. Ganciclovir-loaded albumin nanoparticles: Characterization and in vitro release properties. Albumin nanospheres as carriers for passive drug targeting: An optimized manufacturing technique. Oligonucleotide-protamine-albumin nanoparti- cles: Protamine sulfate causes drastic size reduction. Understanding the nanoparticle-protein corona using methods to quantify exchange rates and afﬁnities of proteins for nanoparticles. Nanoparticle size and surface properties determine the protein corona with possible implications for biological impacts. Gamma interferon loaded onto albumin nanoparti- cles: In vitro and in vivo activities against Brucella abortus. Targeting study of gelatin adsorbed clodronate in reticuloen- dothelial system and its potential application in immune thrombocytopenic purpura of rat model. An enzyme-linked immunosorbent assay for the detection of autoantibodies to albumin. Gelatin-speciﬁc humoral and cellular immune responses in children with immediate- and nonimmediate-type reactions to live measles, mumps, rubella, and varicella vaccines. Preparation of sub-100 nm human serum albumin nanospheres using a pH-coacervation method. Vascular permeability in a human tumor xenograft: Molecular size dependence and cutoff size. Receptor mediated targeting of lectin conjugated gliadin nanoparticles in the treatment of Helicobacter pylori. Human serum albumin nanoparticles for efﬁcient delivery of Cu, Zn superoxide dismutase gene. Gold Nanoparticles and Surfaces: Nanodevices for Diagnostics and Therapeutics Hariharasudhan D. Chirra, Dipti Biswal, and Zach Hilt Department of Chemical and Materials Engineering, University of Kentucky, Lexington, Kentucky, U. The use of gold as a key component in biodiagnostic and therapeutic ﬁelds has emerged pri- marily over a period of three decades, though it has been used for centuries for artistic purposes. Gold is known to be the main ingredient for the preparation of an ancient Roman elixir of life. An example of a historical use of gold was in the coloring of glass during the 17th century to produce intense shades of yellow, red, or brown depending on the concentration of gold. In 1842, colloidal gold was used in chrysotype, a photographic process to record images on paper. During the 19th century, the pure form of gold called activated gold, due to its inert behavior to harsh environments, was prominently employed for catalysis (1). With the advent of numerous tools, techniques, and concepts related to nanotechnology, in combi- nation with the inherent property of gold to form functionalized bioconjugates via simple chemistry, gold has found importance in various biodiagnostic and thera- peutic applications (2–6). Herein, we detail the progress made in the functionaliza- tion of gold surfaces, both planar and particulates, at the nanoscale for diagnostic and therapeutic applications. Although gold can be directly used for biomedical applications, unique applications of this inert metal require functionalization with other biomolecules or biocompati- ble polymeric systems. The presence of an appropriate stabilizing agent prevents particle agglomera- tion by binding to the particle surface to impart high stability and also rich linking chemistry if it acts as a functional group for bioconjugation (8–10). The functionalization of gold surfaces can be achieved by using either “graft- ing to” or “grafting from” methods (Fig. Initially, grafted polymer layers over these active sites, however, hinder the further attach- ment of polymer chains because of limited availability of more active sites, thus limiting ﬁlm thickness and brush density. In the “grafting from” approach, a reac- tive unit on the surface initiates the polymerization, and consequently the polymer chains grow from the surface. Most “grafting from” polymerization reactions uti- lize controlled radical polymerization mechanisms. Since monomers diffuse more easily to reactive sites than macromolecules, this approach generally leads to higher grafting densities. A variety of functionalization techniques over gold surface are described in the following text. The thiol gold chemistry is used as the key mechanism for graft- ing small biomolecules and short-chain, end-functionalized polymeric stabilizers to gold. Murray and his colleagues extended Schiffrin’s method to diversify the functionality of monolayer-protected clusters to mixed monolayer-protected clus- ters by using a place-exchange reaction between the thiols (13). Table 1 provides a list of “grafting to” surface-modiﬁed particles, as synthesized by various researchers for biorelated diagnostic and therapeutic applications. For further information, the reader is directed to the respective references given in the table for the attach- ment/reaction chemistry. This is due to the effect of steric hindrance on the nonuniform attachment of polymer chains to the gold surface. This one monomer at a time attachment to the surface of interest leads to a much denser and more uniform polymer-coated surface when compared to that obtained by “grafting to” techniques. While a wide combination of polymeric networks can be obtained via “grafting from” techniques, the same is not viable by using “grafting to” techniques. Surface modiﬁcation with polymer brushes had been widely used to tailor various surface properties of gold (14,15).
Lingering illnesses decrease productivity generic 70 mg alendronate free shipping menopause urban dictionary, causing work- ers to forgo pay and spend more on treatment trusted 35mg alendronate menopause news. Through encouraging antimicrobial resistance purchase alendronate 70 mg on line pregnancy depression, illegitimate medicines reduce the effective life of a drug alendronate 35mg line pregnancy for dads. Society must bear the cost of drug development, an expense that increases as drugs become more complex. Substandard and falsifed medicines undermine confdence in the health system and in all public institutions. Their sale fnances other crimes, buys weapons and ammu- nition, and conveys power to corrupt offcials. Victims of falsifed and sub- standard drugs usually do not even know they are victims and are therefore deprived of their right to redress. In many ways, the trade in illegitimate pharmaceuticals further erodes the already weak political infrastructure that allows them to circulate, part of a vicious cycle of poverty and crime. Governments and industry monitor problems with drug qual- ity, but this information is not usually public. The Pharmaceutical Security Institute, a network of the security divisions of 25 major pharmaceutical companies, has data that indicate that the illegal trade and manufacture of medicines is a global problem. It affected at least 124 countries in 2011, and the burden is disproportionately felt in the developing world. Interpol, an international organization that facilitates police cooperation, has conducted 11 opera- tions against illicit medicines since 2008. Police working in Interpol raids have confscated tons of suspect products, leading to hundreds of investiga- tions and arrests. Much of the scientifc literature about drug quality is in case studies: reports from clinicians who uncover substandard or falsifed drugs in their routine work. This kind of report provides context on how and when dif- ferent kinds of drugs are compromised; it can also trigger epidemiological investigation. Nonprobability or convenience samples are by far the most commonly used method to study drug quality. Such studies indicate serious problems with antibiotics in poor countries and antimalarial drugs in sub- Saharan Africa and Southeast Asia. The best estimate of the burden of illegitimate drugs comes from sys- tematic random samples, collected by patient actors from a representative cross section of drug sellers. More research in accordance with the recent guidelines on medicine quality assessment reporting would advance understanding and monitoring of the problem. Lack of clarity regarding the magnitude of the falsifed and substandard medicines market holds back coordinated international action. Consistent use of this system, eventually linking it to national pharmacovigilance systems, would advance international action and give a more nuanced understanding of the type of falsifed, substandard, and unregistered medicines in circula- tion and the extent of the trade. Recommendation 3-1: Governments should establish or strengthen systems to detect substandard, falsifed, and unregistered medicines. This surveillance should be integrated with established public health Copyright © National Academy of Sciences. Analysis and reporting should precisely describe the product’s quality, packing, and registration. Failure to adhere to good manu- facturing practices is the root cause of substandard drugs. Quality-control processes and verifcation add expense to manufacture, as does maintaining sterile water fltration and air handling systems. Proper quality control in- cludes dealing only with quality-assured suppliers, but small- and medium- sized manufacturers often neglect supplier quality because of logistical obstacles and cost. Multinational companies, both innovator and generic, operate on a scale that allows them to recoup the costs of running high-quality factories. Initial capital investments and infrastructure problems stand between qual- ity medicines and many small- and medium-sized medicine manufacturers. Small- and medium-sized frms and companies in Africa have a diffcult time securing business improvement loans. The only capital available to these companies is their profts, and reinvesting profts is not a quick or reliable path to building a modern manufacturing infrastructure. The International Finance Corporation and the Overseas Private Invest- ment Corporation can work to encourage better private sector pharmaceu- tical manufacturing in developing countries. With the initial investments made, governments can take on the more manageable role of encouraging partnerships with foreign manufacturers. Recommendation 4-1: The International Finance Corporation and the Overseas Private Investment Corporation should create separate invest- ment vehicles for pharmaceutical manufacturers who want to upgrade to international standards. Governments can complement this effort by encouraging partnerships between local and foreign manufacturers. In practice, it is diffcult to distinguish the quality failures that are to blame on a manufacturer’s inability to meet international best practices from those that come from a decision to cut corners and produce inferior products for poorly regulated markets. When a producer capable of meet- ing international standards fails to do so consistently and only in product lines sold to the poor, one may conclude that noncompliance is part of a more insidious system. Rich countries enforce high quality standards for medicines, and manu- facturers recognize the need to use quality ingredients and good manufac- Copyright © National Academy of Sciences. United Nations agencies and larger international aid organizations will also refuse to do business with com- panies that cannot meet stringent regulatory authority quality standards. Manufacturers are aware, however, that low- and middle-income countries are less likely to enforce these standards. When a manufacturer produces medicines of inferior quality for less exacting markets it is known as tiered or parallel production. When regulatory checks on production are inconsistent, good procure- ment practices can ensure that quality medicines get the largest market share. The frms that offer the cheapest prices do so by buying impure ingredients and cutting corners in formulation. Good procurement dictates that the cheapest tenders are not accepted if they are of dubious quality, but it is diffcult not to be swayed by price. Proper precaution in medicines procurement can prevent poor-quality products from infltrating the mar- ket. Good procurement puts a strong emphasis on controlling corruption and promoting transparency. Recommendation 4-2: Procurement agencies should develop a plan, within the next 3 to 5 years, to comply with the World Health Orga- nization’s Model Quality Assurance System for procurement agencies and work to remove any barriers to compliance. The regulator can only confrm that the producer is unknown and turn the case over to law enforcement. The police and detectives who inherit these cases have a diffcult job gathering suffcient evidence for a prosecution there is usually little if anything to tie the falsifed drug in the market to the culprit. Criminals run lucrative businesses making and traffcking fake medi- cines, and these crimes are mostly opportunistic, emerging where regulatory systems are weakest. When criminals target the products of multinational, innovator pharmaceutical companies, the companies’ security staff build evidence for a conviction. Police are also investigating more pharmaceuti- cal crimes, but most police action is limited to brief raids. It is diffcult for police to keep up momentum for sustained action on pharmaceutical crime, especially given the immediate pressure to investigate murders and other violent crimes. The high demand and erratic supply of drugs, weak regulatory systems, and un- even awareness contribute to the trade in both falsifed and substandard drugs. Medicines are what economists describe as an inelastic good; changes in the unit price of the medicine have proportionately little effect on the demand. Price inelasticity, combined with a high relative price, make medi- cines a major expense for patients around the world. Drug shortages drive up the price of medicines and push consumers to unregulated markets.