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Involving consumers in research and development agenda setting for the NHS: developing an evidence-based approach.

OBJECTIVES: To look at the processes and outcomes of identification and prioritisation in both national and regional R&D programmes in health and elsewhere, drawing on experiences of success and failure. Also to identify the barriers to, and facilitators of, meaningful participation by consumers in research identification and prioritisation. DATA SOURCES: Electronic databases and interviews with UK consumers and research programme managers. REVIEW METHODS: A framework was devised for examining the diverse ways of involving consumers in research. It identified key distinguishing features as: the types of consumers involved; whether consumers or researchers initiated the involvement; the degree of consumer involvement (consultation, collaboration or consumer control); forums for communication (e.g. committees, surveys, focus groups); methods for decision-making; and the practicalities for implementation. Context (institutional, geographical and historical setting) and underpinning theories were considered as important variables for analysing examples of consumer involvement. This innovative framework was then applied to the review data from reports selected for inclusion and interviews. RESULTS: The study found 286 documents explicitly mentioning consumer involvement in identifying or prioritising research topics. Of these, 91 were general discussions, some of which included a theoretical analysis or a critique of research agendas from a consumer perspective, 160 reported specific efforts to include consumers in identifying or prioritising research topics and a further 51 reported consumers identifying or prioritising research topics in the course of other work. Detailed reports of 87 specific examples were identified. Most of this literature was descriptive reports by researchers who were key actors in involving consumers. A few reports were written by consumer participants. Fewer still were by independent researchers. Our conclusions are therefore not based on rigorous research, but implications for policy are drawn from individual reports and comparative analyses. CONCLUSIONS: Productive methods for involving consumers require appropriate skills, resources and time to develop and follow appropriate working practices. The more that consumers are involved in determining how this is to be done, the more research programmes will learn from consumers and about how to work with them. Further success might be expected if research programmes embarking on collaborations approach well-networked consumers and provide them with information, resources and support to empower them in key roles for consulting their peers and prioritising topics. To be worthwhile, consultations should engage consumer groups directly and repeatedly in facilitated debate; when discussing health services research, more resources and time are required if consumers are drawn from groups whose main focus of interest is not health. These barriers can largely be overcome with good leadership, purposeful outreach to consumers, investing time and effort in good communication, training and support and thereby building good working relationships and building on experience. Organised consumer groups capable of identifying research priorities also need to find ways of introducing their ideas into research programmes. Further research is suggested to develop and evaluate different training methods, information and education and other support for consumers and those wishing to involve them; to address the barriers to consumers' ideas influencing research agendas; and to carry out prospective comparative studies of different methods for involving consumers. Research about collective decision-making would also be further advanced by addressing the processes and outcomes of consensus development that involves consumers.

Community Participation↗

Development of a finite element-based injury metric for pulmonary contusion part I: model development and validation.

Pulmonary contusion is the most commonly identified thoracic soft tissue injury in an automobile crash and after blunt chest trauma and affects 10-17% of all trauma admissions. The mortality associated with pulmonary contusions is significant and is estimated to be 10-25%. Thus, there is a need to develop a finite element model based injury metric for pulmonary contusion for the purpose of predicting outcome. This will enable current and future finite element models of the lung to incorporate an understanding of how stress and strain may be related to contusion injuries. This study utilizes 14 impacts onto male Sprague-Dawley rats. In 5 of these tests, a calibrated weight (46 g) is dropped from a height of 44 cm directly onto the lungs of intubated, anesthetized rats in situ. Contused volume is estimated from MicroPET scans of the lung and normalized on the basis of liver uptake of 18F-FDG. The lungs are scanned at 24 hours, 7 days, and 28 days (15 scans), and the contused volume is measured. In addition, 9 controlled mechanical tests on in situ rat lung are used for model development and validation. Identical impacts are performed on a finite element model of the rat lung. The finite element model is developed from CT scans of normal rat and scaled to represent average rat lung volume. First principal strain is chosen as a candidate injury metric for pulmonary contusion. The volume of contused tissue at the three time points measured using PET is compared to the strain level achieved by a corresponding volume in the finite element model. For PET scans (n=5 scans per time point), the average contusion volume was 4.2 cm3 at 24 hours, 2.8 cm3 at 7 days, and 0.39 cm3 at 28 days. These volumes were used to identify threshold peak first principal strain levels measured by the finite element model. Maximum first principal strain from the finite element model for the three volume levels (4.2, 2.8, and 0.39 cm3) was 3.5%, 8.8%, and 35% strain, respectively. Furthermore, the lung model exhibited exponential decay in principal strain threshold as more of the lung volume was considered, correlating to the precise and well defined volume of the contusion as it healed. The results of this study may be used to establish an injury metric to predict pulmonary contusion due to an impact to the lungs. The results may be used to improve finite element models of the human body, which may then be used to tune stiffnesses of interior components of automobiles and tune safety systems for maximum mitigation of this serious injury.

Journal Article↗

The physician/hospital joint venture. Developing a win/win strategy for success. Part I: The first step: developing the environment.

This four part series, "The Physician/Hospital Joint Venture: Developing a Win/Win Strategy," will examine the philosophical basis of marketing to physicians, the options for the organization in formulating a strategy for joint venture development, structuring and negotiating the deal, and finally how to build the physician loyalty and commitment essential for the joint venture's continued success. In this first article, the author emphasizes the organization's need to develop a strategic plan that includes a program for attracting physicians. It also points out the need for sensitivity to physicians' concerns and provides examples of successes and failures.

Hospital Administration↗

[Development, during ontogenetic development of gymnotids, of substance p expression in tuberous organs (electroreceptors)].

The evolution of the neuropeptidic expression of Substance P has been investigated with immunohistochemistry in the cutaneous electroreceptors, tuberous organs, during ontogenetic development of Apteronotus leptorhynchus. In the present data, antiSP antiserum has been applied to serial sections of Apteronotus leptorhynchus larvae obtained from several egg layings. Larvae were taken during development from hatching up to one hundred days old. SP immunoreactivity appeared just after hatching, in the epidermal zones which give rise to cutaneous sense organs. Four days after hatching, the tuberous organs are differentiated and immunoreactivity was observed in these organs, in both sensory cells and accessory cells. From day 30 after hatching, there was a regular decrease in the number of tuberous organs showing labelled accessory cells, and one hundred days later only 8% of tuberous organs had immunoreactive accessory cells. The adult accessory cells were no longer labelled with anti-SP antiserum. The results showed that in Apteronotus leptorhynchus, the epidermal structures which give rise to the cutaneous sensory organs were immunoreactive at a very early stage of development; this suggests that SP could have an effect upon their differentiation.

Animals↗

[The development of vaccination as demonstrated on the development of the Bavarian State Vaccination Institute in the 19th and 20th centuries].

In 1801 the smallpox vaccination has been introduced in Bavaria by order of the Duke Franz Joseph. He appointed a Medical Superintendent, responsible for smallpox vaccinations for the whole country. This was the hour of birth for the Institute, too. The Institute developed quickly to a point of crystallization in the field of prophylactic medicine, research on infectious diseases and social pediatrics. By this Institute the "Retrovaccine" against smallpox was introduced 1856. 1967 -- 1976 an attenuated life smallpox-vaccine (MVA) has been developed. Some years ago the activities of the Institute had been focussed into research of complications after vaccinations and up to date, on the pathogenesis of Multiple Sclerosis. A historical review demonstrates the development of the Institute in the past up to modern activities in research, teaching students and postgraduate education and in medical practice.

Academies and Institutes↗

Relationship between development of antibodies to Borrelia burgdorferi in dogs and the subsequent development of limb/joint borreliosis.

The relationship between antibody production and the subsequent development of limb/joint disorders of borreliosis was examined in dogs from south central Connecticut. Dogs without signs of illness, determined by physical examination, were selected from dogs being tested for Dirofilaria immitis. An ELISA was used to detect antibodies to Borrelia burgdorferi in 234 apparently healthy dogs during 1988. These dogs were monitored for 20 months after initial analyses to determine the prevalence of limb/joint disorder in seropositive and seronegative dogs. Of 234 dogs from which samples were initially obtained, 125 had antibodies to B burgdorferi and 109 were seronegative. The development of limb/joint disorder (eg, lameness, swelling, and signs of pain) accompanied by lethargy, fever, and inappetence in each group was nearly equal. Rates of 4.8% (6/125) and 4.6% (5/109) were recorded for seropositive and serosurvey of dogs, respectively. We conclude the serosurvey of apparently healthy dogs had no predictive value for the subsequent development of limb/joint disorder.

Animals↗

[Neural pattern and limb development--normal development of the hindlimb nerve in the mouse and its aberrations induced by 5-fluorouracil].

Many ways of approach are available for the elucidation of the pathogenesis of congenital limb malformation. We examined the time course of the development of the nerve pattern in the whole mounted hindlimbs of mouse embryo stained with Karnovsky's method. The normal development and its aberrations induced with maternal administration of 5-fluorouracil at day 10.0 of gestation were studied. The basic development of the nerve pattern in normal limbs and 5-fluorouracil-induced poly-dactylic+ limbs was similar. At the stage of digital ray formation, distal tips of the nerve fibers were still reaching the base of the foot plate. Nerve fibers seem to reach the tip of the digit as a secondary phenomenon following formation of digital rays. These findings indicate that the developmental pattern of nerves in the mouse hindlimb is largely determined by the mesenchyme, rather than by the nerves themselves.

Animals↗

Structure and development of rabbit pepsinogens. Stage-specific zymogens, nucleotide sequences of cDNAs, molecular evolution, and gene expression during development.

In order to clarify the structure and development of rabbit pepsinogens, purification and molecular cloning of these proteins were performed at various developmental stages. Several pepsinogens were isolated, and they were classified as pepsinogens F and M, and into pepsinogen groups I, II, and III. The relative levels and specific activities of the various pepsinogens changed significantly during development. Pepsinogens F and M were present only at the early postnatal stage, and their level was higher than those of other pepsinogens at this stage. Pepsinogens in groups I, II, and III were the predominant zymogens at the late postnatal stage. cDNA clones encoding all of these pepsinogens were obtained, with the exception of pepsinogens I and M, and the nucleotide sequences were determined. Each cDNA contained a leader region (signal peptide), a pro-region (activation segment), and a pepsin region, of 15, 44, and 328 residues, respectively, with the exception of the cDNA for pepsinogen F in which the pro- and pepsin regions were composed of 43 and 330 residues, respectively. Pepsinogens in groups II and III exhibited a high degree of similarity with one another, whereas many substitutions were found in pepsinogen F. A unique substitution in the activation segment of pepsinogen F, namely, Gly----Asp at position 21, was found, which made the structural features of this segment more specific. A phylogenic tree was constructed from the differences in nucleotide sequences and showed clearly that each pepsinogen in groups II and III could be classified as pepsinogen A, a major pepsinogen in mammals. Pepsinogen F diverged significantly from these groups and may be a new type of pepsinogen. Northern analysis revealed that the expression of the gene for pepsinogen F was restricted to the early postnatal stage, and the expression of genes for pepsinogens in groups II and III was detected predominantly at later stages, a result that shows the switching of gene expression from fetal pepsinogen to adult pepsinogens during development.

Aging↗

Effects of prenatal nicotine exposure on development of central and peripheral cholinergic neurotransmitter systems. Evidence for cholinergic trophic influences in developing brain.

The development of cholinergic systems in brain regions was evaluated biochemically in developing control rats and rats whose mothers received nicotine via continuous minipump infusion during gestational days 4 to 20. The cerebral cortex displayed a unique maturational pattern of choline acetyltransferase (ChAT) activity and high-affinity synaptosomal [3H]choline uptake capabilities, characterized by increases in the concentration of these components and a postnatal spike of neuronal activity as assessed with the uptake/ChAT ratio; the peak of activity coincided with the time at which neurogenesis declines and synaptogenesis rises. Evaluation of the same markers in midbrain + brainstem indicated rises in uptake which were relatively unselective, primarily reflecting tissue growth and no postnatal peak of uptake/ChAT; cerebellum likewise showed primarily tissue growth-related changes in ChAT rather than increases in its specific concentration. Prenatal exposure to nicotine had a marked adverse effect on developmental patterns of ChAT, uptake and uptake/ChAT only in cerebral cortex, the region previously shown to exhibit major abnormalities caused by this drug and other treatments with cholinomimetic effects. ChAT was unaffected in peripheral projections to the adrenal. Nicotine may thus selectively disrupt central nervous system development by stimulating nicotinic receptors which are present in fetal brain, prematurely eliciting the events ordinarily triggered postnatally by cholinergic projections.

Animals↗

Granulopoiesis in tadpoles of Rana esculenta. Ultrastructural observations on the developing granulocytes and on the development of eosinophil granules.

The morphology and development of the granules of developing eosinophils present in the trunk kidneys of Rana esculenta tadpoles has been studied at the ultrastructural level. During the differentiation of eosinophil granulocytes a single and morphologically unique population of cytoplasmic granules is present. Fully developed granules are spherical, membrane-limited, and have a dense and homogeneous content. Eosinophil granules have been traced back to Golgi-derived vacuoles which fuse and form immature granules containing a dense and knot-like precipitate. By condensation these immature granules transform into the definitive homogeneous forms. The eosinophil granules of Rana esculenta are compared to those in other vertebrates and possible phylogenetic aspects are discussed.

Animals↗

Relationship between in utero development of the mouse liver and tumor development following transplacental exposure to ethylnitrosourea.

Pregnant C3HeB/FeJ mice were treated with ethylnitrosourea (ENU) on one of gestation Days 10, 13, or 15 to determine if ENU treatment at different stages of gestation would result in morphological or quantitative differences in liver tumors induced in the offspring. Liver tumors were counted and measured 6 mo after treatment with ENU. Foci of cellular alteration were identified histologically and counted. Liver tumor number and foci of cellular alteration increased as a function of increasing dose and age at the time of ENU treatment. An inverse relationship between age at the time of treatment and the size of liver tumors was found. The mean tumor volume of male mice exposed on Day 10 of gestation was 123-fold larger than for spontaneous tumors observed in controls. The differences between mean liver tumor volume in mice which had been exposed to ENU on Days 10, 13, or 15 of gestation appeared to be associated with the exponential growth of the fetus during this period of gestation. Unique, large, multinodular foci of cellular alteration were found in mice treated on Day 10 of gestation. The relationship between the stage of gestation and the size of chemically induced liver tumors in these mice is similar to previous observations with transplacentally induced lung tumors in C3HeB/FeJ mice. This indicates that developmentally regulated cell proliferation occurring at the time of carcinogen exposure may affect the subsequent extent of tumor development in both the liver and lung. Therefore, cells transformed during early development may result in tumors that pose a greater biological hazard than those transformed in later development.

Animals↗

[Progression of coronary artery stenosis and compensatory development of collaterals: analysis of data of 25 patients who developed complete occlusion].

The correlation between progression of atherosclerotic lesions and the compensatory development of collaterals which prevent ischemic events, particularly myocardial infarction, were examined in patients who underwent repeated coronary angiography (CAG) after medical therapy. Twenty-five patients with lesions in their coronary arteries perfusing the viable myocardium during the first study, which progressed to total occlusion in the second study, were evaluated. The subjects' mean age was 55.1 years, and the mean time interval between the two studies was 44.1 months. CAG was performed in the chronic stage of myocardial infarction or the stable phase of angina pectoris, but three patients underwent repeated CAG studies during the acute phase of myocardial infarction. The percent diameter of the narrowing in the lesion was assessed according to the AHA system. Concerning the sites of lesions with progression to complete occlusion, 14 (56%) were located in the proximal segment of the left anterior descending artery (segment 6 or 7), and six lesions were in the main trunk of the right coronary artery (segment 1, 2 or 3). In 11 patients with stable angina, associated lesions showed progression from 90 or 99% stenosis to complete occlusion. Seven patients with lesions exhibiting 99% stenosis had collaterals, and four patients with lesions exhibiting 90% stenosis had no collaterals during the first study. However, good collaterals were demonstrated in all patients in the second study. Seven patients had episodes of newly developed unstable angina. The lesions in five of the seven patients progressed from 75% or 90% stenosis to complete occlusion, and in one patient with triple vessel disease the lesion progressed from 99% stenosis to complete occlusion in the second study. The former five patients did not have collaterals in the first study, but development of collaterals was demonstrated in all seven patients in the second study. Seven patients had episodes of myocardial infarction, and in six of these, the lesions progressed from 75% or less stenosis to complete occlusion.(ABSTRACT TRUNCATED AT 400 WORDS)

Adult↗

[Effect of weightlessness on the indices of brain development (the results of pregnant rats being on the Kosmos-1514 biosatellite and research on the subsequent development of their progeny on Earth)].

Beginning from the 13th day of pregnancy the rats were under conditions of weightlessness of spaceflight for 6 days. After landing in 18-day-old fetuses the state of their brain development is investigated comparing to that in control animals, that are on the Earth. As demonstrates analysis of a number of morphological processes: reproduction, migration, neuronal differentiation, growth of processes, establishment of nervous connections, neuroglial interconnections and vascularization--all they under conditions of weightlessness develop rather fully. Certain deviations in vascularization (as examples the medulla oblongata and the striated tuber are taken) are observed--the amount of vessels is greater and they are thinner--and changes in migration rate of cells is demonstrated by the example of the cortical plate formation. These changes are quickly levelled during their subsequent development on the Earth.

Animals↗

[Features of the development and clinical picture of hysterical neurosis and hysterical neurotic personality development].

The characteristics of the formation and structure of hysterical symptomatology in hysterical neurosis and hysterical neurotic development of personality are described. The author shows the pathomorphosis of modern hysterical neurotic disturbances and emphasizes a tendency toward imitation of common somatic diseases and the predominance in the clinical picture of neurosis of somato-vegetative and asthenic manifestations. Factors affecting the pathological process (characteristics of the premorbid adjustment and psychotraumatic situation) are analyzed. Hysterical neurosis was largely associated with vegetative manifestations while the hysterical neurotic development was more often related to affective ideatory manifestations. The authors have also identified two clinical variants of the hysterical neurotic development whose common characteristics included excessively affective reactions, lability to vehement non-differentiated emotional responses to any stimulus, and behavioural disturbances according to the hysterical type.

Adult↗

The effects of experimental unilateral anotia on skull development in the chick embryo. V. The development of the brain and its meningeal envelope in embryos of 9-20 days of incubation.

In a total number of 27 normal and 27 unilaterally anotic chick embryos, varying in age from 9-19 days, the morphogenetic relationships between the neurocranium on the one hand and the brain and its meningeal envelope on the other were studied. The results showed that, in general, unilateral anotia slightly interferes with the development of the bain. Only the homolateral nucleus tangentialis and cerebellar auricle proved to be underdeveloped. However, the brain of the anotic embryos progressively develops asymmetrically: In an antero-posterior and a ventro-dorsal direction abnormal flexures are present, and various components of the brain on the anotic side undergo changes in shape and position. These changes in brain morphology are interpreted as secondary features. Hence, the conclusion is drawn that the neurocranium, through the intermediary of the meningeal envelope, controls--or at least is capable to control--the general morphological development of the brain.

Animals↗

[Effect of the polymerase activity of DNA polymerase I on the development of the temperate bacteriophages Mu, lambda red- and lambda red-gam-. I. The effect of the polymerase activity of DNA polymerase I on the development of bacteriophages lambda red- and lambda red-gam-].

Phages lambda c1857 red3 and lambda bio10 in Escherichia coli K-12 cells with impaired function of DNA-polymerase I polymerizing activity are shown to restore their normal development level when exonucleases V and I are removed from cells. In other words, an indirect involvement of DNA-polymerase I in the development of phages lambda defective in general recombination systems and gene gam functions has been established. A probability of DNA-polymerase I participation in the recombination stage of phage lambda development in E. coli K-12 cells is discussed.

Adsorption↗

Regulatory mechanisms in the development of bone and cartilage: the use of tissue culture techniques in the study of the development of embryonic bone and cartilage: a perspective.

Tissue culture techniques were used to study a number of factors and mechanisms which are important in the development and metabolism of bone tissue. As an example of an external factor influencing bone development, the importance of the composition of the gasphase which is in equilibrium with the fluid bathing osteoblasts and hypertrophic chondrocytes, was investigated in cultured metatarsal bone rudiments. In vivo, one expects the presence of an O2 gradient in the cartilaginous epiphyses of long bones: low O2 tension between the nonhypertrophic chondrocytes, high O2 tension in periosteum and hypertrophic zone, bordering the marrow cavity. The in vitro findings correlated with these expectations. High CO2 (5%) and high O2 (40%) tensions stimulated calcification; in air, calcification was severely inhibited. On the other hand, maturing chondrocytes were damaged by high O2 tensions. An important cellular mechanism in calcification is the intracellular accumulation of calcium (and phosphate) in osteoblasts and hypertrophic chondrocytes which can be demonstrated with the GBHA stain of Kashiwa [9]. The extracellular role of alkaline phosphatase (AP) present on the cell membranes of these cells was shown to be a less decisive factor in calcification. In the presence of AP inhibitor in a concentration high enough to inhibit AP activity to a large extent, calcification was shown to proceed normally. The effects of a number of hormones known to be important for the development and metabolism of bone tissue was studied using tissue culture (calvaria) as well as culture of different isolated bone cells. The parathyroid hormone (PTH) induced rise of the intracellular cAMP level was found to originate primarily from the osteoblasts not the osteoclasts. Isolated osteoblasts showed a high cAMP response after PTH addition. Cortisol was shown to inhibit PTH induced resorption but to potentiate PTH induced cAMP response in calvaria. Various PTH fragments (desamino 1-34, 2-34, 3-34) were shown to be active as stimulators of bone resorption (although they were less active in this respect than the intact molecule 1-84), but did not stimulate cAMP production in calvaria or isolated osteoblasts. The results obtained strengthened the hypothesis that cAMP is not the (only) mediator in PTH induced bone resorption.

Alkaline Phosphatase↗

[Prenatal development and postnatal changes in the guinea pig cortex: microscopic evaluation of a natural deprivation experiment. I. Prenatal development].

The present paper is based on the question, to what extent the cortical structure is determined by genetic factors and how far it is dependent on environmental stimuli. Some deprivation experiment in the literature have supported the assumption tha excitation coming from the sense organs contributes to the formation of synaptic connections in the cortex. This made it possible to invoke the formation of synapses (or dendritic spines) as a substrate of learning processes. Results of experiments on the influence of artificial environments on the formation of synapses have been, however, somewhat contradictory. On this background it was interesting to investigate the cortical development of the guinea-pig, an animal which is highly developed at birth. This percocity separates in time the process of genetically determined development from the changes due to environmental stimuli, which are amply overlapping in altricial animals such as mouse, rat, and cat. A comparison between the cortices of prenatal and adult guinea-pigs showed that the density of dendritic spines has reached adult values already before birth (12/10 micrometers dendritic length before birth, 11,5/10 micrometers in adult animals, fig. 5-8, and 17). The counts have been made on basal dendrites of Golgi-impregnated pyramidal cells in the upper third of the cortex. Also, the difference in the density of synapses on electronmicrographs in animals just before birth (8,9 x 10(8)/mm(3)) and in adult animals (9,4 x 10(8)/mm(3)) was not significant (figs. 13, 14, and 16). The samples have been taken from the second cortical layer. The two areas investigated showed small but significant differences in the time course of spine formation. In both areas the density of spines reached a maximum first and then decreased slightly toward the adult values. However, in the postcallosal area the maximum was reached earlier than in the precallosal area (fig. 9). The decrease in spine density after the maximum, about 18% in both areas, may be partly explained by the growth of dendrites. From the increase in brain volume between birth and adult age and from the density of synapses at different stages, one can conclude that the total number of synapses at birth is about two thirds of that in adult animals. Similarly, the proportion of spines present at birth was at least the same or even higher (fig. 12). Thus, most of the connections in the cortex of the guniea pig are formed without the influence of environmental stimuli. This puts strong doubts on the idea of the formation of synapses or dendritic spines as memory traces. Synapses and spines seem to be the prerequisites of learning rather than the result of it. In part II the question will be examined, if postnatal changes in the cortex of the guinea-pig, especially on spines and synapses, are possible candidates for memory traces.

Animals↗