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| Registros recuperados: 273 | |
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| Bernd Kastenholz; Basil Horst; Jürgen Horst. |
| Commercially available medicinal plant extracts such as Ginkgo biloba leaf extract show no consistent pattern of clinical benefit for people with dementia or cognitive impairment, and have been suggested to be toxic to cells at higher doses. However, medicinal plants may contain other more efficient bioactive molecules apart from the well-known flavonoids and terpenoids. Therapeutic recombinant proteins, plant-made copper chaperone for superoxide dismutase (CCS) derived from Ginkgo biloba leaves, may establish and maintain physiologic Cu levels through restoration and modulation of biometal metabolism in organ systems of younger Alzheimer patients (> 50 years). Medications developed from plant-made copper chaperone proteins may delay progression... |
| Tipo: Manuscript |
Palavras-chave: Neuroscience; Pharmacology. |
| Ano: 2011 |
URL: http://precedings.nature.com/documents/5907/version/6 |
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| Ajit Vikram; Gopabandhu Jena. |
| Genetic ablation studies confirmed the role of central insulin-receptor signaling (CIRS) in fuel metabolism. However, the need to examine the role of CIRS in glucose homeostasis under normal physiological condition is indispensable, as insulin affects the neuronal growth, differentiation and synaptic plasticity. Intracerebral administration of S961 induced hyperglycemia and glucose intolerance in normal rats, and provided direct evidence for the involvement of CIRS in the regulation of glucose homeostasis. |
| Tipo: Manuscript |
Palavras-chave: Neuroscience; Pharmacology. |
| Ano: 2011 |
URL: http://precedings.nature.com/documents/5701/version/1 |
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| Petr Lokhov. |
| Immunization with cancer cells is of great demand in anti-cancer therapy. However, current cellular vaccines are inefficient and there are questions regarding their overall safety. We report a simple and straightforward approach for improving of cellular cancer vaccines. Through treatment of cancer cell cultures with purified protease, it is possible to make preparations of cell-surface antigens that are free of intracellular content and contain two orders-of-magnitude less protein than the whole lysate of an equivalent number of cancer cells. Despite this difference in total protein content, protease-generated preparations stimulate anti-cancer responses from immune cells better those stimulated with cancer cells themselves. The composition of collected... |
| Tipo: Manuscript |
Palavras-chave: Biotechnology; Cancer; Pharmacology. |
| Ano: 2010 |
URL: http://precedings.nature.com/documents/4356/version/1 |
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| Bidhan C. Bandyopadhyay; Lina Chakrabarti; Mrinal K. Poddar. |
| Amounts of dietary protein as well as the duration of its supplementation are critical
factors that correlate with the hypothalamic GABAergic activity and immune function
during aging. Here we evaluate the effect of low (5%) and high (40%) protein diet on the
functional state of hypothalamic GABA receptor in the aging brain in albino rats. Longterm
(LT; for 30 consecutive days) supplementation of low protein diet (LDP) retarded
the age-associated (3 to 18 months) (a) loss of both low and high affinity hypothalamic
GABA receptor sensitivity and (b) increase of high affinity GABA receptor density.
Short-term (ST; for 7 consecutive days)... |
| Tipo: Manuscript |
Palavras-chave: Neuroscience; Pharmacology. |
| Ano: 2008 |
URL: http://precedings.nature.com/documents/2284/version/1 |
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| Babajan B; Chaitanya M; Anuradha CM; Suresh Kumar Chitta. |
| The emergence of tuberculosis resistant to multiple, first- and second-line antibiotics poses challenges to a global control strategy that relies on standard drug treatment regimens. The high drug-resistant strains of Mycobacterium tuberculosis (Mtb) have been implicated in outbreaks and have been found throughout the world; a comprehensive understanding, the magnitude of this threat requires an accurate assessment of the worldwide burden of resistance. In an attempt to design anti-TB drugs, the target chosen is a key enzyme of Mtb, O-Succinylbenzoate synthase (OSBS), which is an attractive target for its role in electron transport chain as OSBS is not available in humans. An attempt has been to built the 3-D structure of Mtb-OSBS using online Swiss model... |
| Tipo: Poster |
Palavras-chave: Biotechnology; Microbiology; Pharmacology; Bioinformatics. |
| Ano: 2009 |
URL: http://precedings.nature.com/documents/3776/version/1 |
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| Lucie Kalvodova; Yongmin Zhang. |
| In this short report, we demonstrate that liposomes bearing the Lewis X trisaccharide on the surface (“Awesosomes”) efficiently target human dendritic cells. We chose a glycolipid with Lewis X trisaccharide headgroup to facilitate the targeted liposome uptake via the DC-SIGN internalization pathway. While no uptake of Awesosomes was detected with wild-type human HEK293 cells, HEK293 cells transfected with human DC-SIGN internalized Awesosomes extensively. In samples of human blood-derived leukocytes, the extent of uptake of Awesosomes correlated with the expression of DC-SIGN, which is a dendritic cells marker. There was a marked difference in the uptake of Awesosomes and plain liposomes by DC-SIGN expressing dendritic cells. There... |
| Tipo: Manuscript |
Palavras-chave: Immunology; Pharmacology. |
| Ano: 2010 |
URL: http://precedings.nature.com/documents/4764/version/1 |
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| Girish Kumar Gupta; Vikas Jain; Prabhat Ranjan Mishra. |
| The proposed ultrathin polyelectrolyte nanoreservoir (UPN) was fabricated in two combinations by alternate layering of polyelectrolytes poly (allylamine hydrochloride) along with sodium poly (styrene sulfonate) (PAH/PSS)5 and sodium alginate (PAH/SA)5 using porous calcium carbonate as a template using layer-by-layer adsorption technique with the subsequent template removal at low pH. We studied the possibility whether remnant intact nanoreservoir could be suited for encapsulation as well as delivery vehicle for protein such as bovine serum albumin as a model. To tune biocompatibility with biological cells the assembled surface was modified using pluronic (F-68) by adsorption and possible hydrophobic interaction. The prepared system was characterized for... |
| Tipo: Poster |
Palavras-chave: Pharmacology. |
| Ano: 2008 |
URL: http://precedings.nature.com/documents/2548/version/1 |
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| Ajeet Ajeet. |
| The purpose of present work is to introduce the binding of existing drugs to the trans-disciplinary protein with the help of docking procedures. Docking procedures allows virtually screening a database of compounds and predict the strongest binder based on various scoring functions. This work has been performed with the help of Molegro Virtual docker, in which two drugs are docked with their corresponding and non-corresponding (trans-disciplinary) protein. Results reveals that the protein-ligand interaction energy, hydrogen bond energy and MolDock scores provided by molegro virtual docker, between legands (Levodopa and Acyclovir) and trans-disciplinary proteins have been equivalent or even better than that of between legands and corresponding proteins. |
| Tipo: Manuscript |
Palavras-chave: Pharmacology; Bioinformatics. |
| Ano: 2011 |
URL: http://precedings.nature.com/documents/6702/version/1 |
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| Jayapal J. Manikandan; Peter Natesan P. N. Pushparaj; Alirio Jose A. J. Melendez. |
| Systemic anaphylaxis is considered to be a typical immediate hypersensitivity response, determined by the activation of immune cells,
via antigen-induced aggregation of IgE-sensitized FcεRI cells. Perhaps most the important cells, in the immediate hypersensitivity responses, are mast cells. We have previously shown that SPHK1 plays a key role in the intracellular signaling pathways triggered by FceRI aggregation on human
mast cells. More recently, we performed a genome-wide gene expression profiling of human mast cells, sensitized with IgE alone, or stimulated by FcεRI aggregation. We found that sphingosine kinase 1 (SPHK1) was one
of genes activated at the earlier stages of mast cell... |
| Tipo: Poster |
Palavras-chave: Immunology; Molecular Cell Biology; Pharmacology. |
| Ano: 2007 |
URL: http://precedings.nature.com/documents/1147/version/1 |
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| Rehab J. Al-Jamal; Linda Wilson; Chris J. Armit; Susan McIntyre; Mark Marsden; Steven D. Shapiro; David J. Harrison. |
| Emphysema is a progressive lung disease characterised by loss of lung parenchyma with associated functional changes including decreased tissue elastance. Here we report beta1 integrin is a novel target for tissue repair and regeneration in emphysema. We show a single dose of a monoclonal antibody against beta1 integrin induced both functional and structural reversal of elastase-induced lung injury in vivo, and we found that similar matrix remodelling changes occurred in human lung tissue. We also identified a potential mechanism of action as this allosteric modulation of beta1 integrin inhibited elastase-induced caspase activation, F-actin aggregate formation and changes in cellular ATP levels. This was accompanied by maintenance of beta1?integrin levels... |
| Tipo: Manuscript |
Palavras-chave: Pharmacology. |
| Ano: 2007 |
URL: http://precedings.nature.com/documents/437/version/1 |
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| Samuel Dolzani; Donald C. Cooper. |
| Innovative molecular tools allow neuroscientists to study neural circuitry associated with specific behaviors. Consequently, behavioral methods must be developed to interface with these new molecular tools in order for neuroscientists to identify the causal elements underlying behavior and decision-making processes. Here we present an apparatus and protocol for a novel Go/No-Go behavioral paradigm to study the brain attention and motivation/reward circuitry in awake, head-restrained rodents. This experimental setup allows: (1) Painless and stable restraint of the head and body; (2) Rapid acquisition to simple or complex operant tasks; (3) Repeated electrophysiological single and multiple unit recordings during ongoing behavior; (4) Pharmacological and... |
| Tipo: Manuscript |
Palavras-chave: Neuroscience; Pharmacology. |
| Ano: 2012 |
URL: http://precedings.nature.com/documents/7152/version/1 |
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| David Basanta; Robert Gatenby; Alexander R. A. Anderson. |
| Although many anti cancer therapies are successful in killing a large percentage of tumour cells when initially administered, the evolutionary dynamics underpinning tumour progression mean that often resistance is an inevitable outcome, allowing for new tumour phenotypes to emerge that are unhindered by the therapy. Research in the field of ecology suggests that an evolutionary double bind could be an effective way to treat tumours. In an evolutionary double bind two therapies are used in combination such that evolving resistance to one leaves individuals more susceptible to the other. In this paper we present a general evolutionary game theory model of a double bind to study the effect that such approach would have in cancer. Furthermore we use this... |
| Tipo: Manuscript |
Palavras-chave: Cancer; Ecology; Pharmacology; Evolutionary Biology. |
| Ano: 2011 |
URL: http://precedings.nature.com/documents/6380/version/1 |
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| Chao Liu; Jing Guan; Ying Chen; Kunshen Liu. |
| Glucocorticoids, produced in adrenal cortex, exert potent natriuretic and diuretic actions in the kidney. Recently, it has been found that glucocorticoids could upregulate the expression of natriuretic peptide receptor A (NPR-A), the primary receptor of atrial natriuretic peptide, in the hypothalamus of the rat. Consequently, systemic administration of glucocorticoid could block dehydration-induced water intake by activation hypothalamic NPR-A. We describe here glucocorticoids could inhibit sodium intake when administrated systemically in conscious, salt-depleted rats; an effect which was strong and long-lasting. The study provided further evidence for the actions of glucocorticoids on central nervous system, which together with their established renal... |
| Tipo: Manuscript |
Palavras-chave: Neuroscience; Pharmacology. |
| Ano: 2010 |
URL: http://precedings.nature.com/documents/5376/version/1 |
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| Haiying Xie; Weiming Wang; Ziqiang Xie; Hong Chen; Kexian Chen. |
| Complement anaphylatoxin 5a (C5a) has been recognized as a potent therapeutic target for anti-inflammatory therapy, thus, blocking the action of C5a on its binding receptors may provide an effective treatment of a variety of inflammatory diseases. However, there have been few clinically available non-peptide C5a receptor antagonists disclosed at present. In pursuit of better anti-inflammatory drugs, quantitative structure–activity relationship studies were carried out in a series of non-peptide C5a receptor antagonists with binding activity using different physicochemical descriptors. The conventional best 2D-QSAR models were developed using a training set of 35 molecules and an external test set of 8 molecules by genetic function approximation... |
| Tipo: Manuscript |
Palavras-chave: Chemistry; Immunology; Pharmacology; Bioinformatics. |
| Ano: 2011 |
URL: http://precedings.nature.com/documents/6630/version/1 |
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| Fuhou Chang; Zhi-Xie Zhang; Jia Ma; Jun QI; Min-jie Wang; Qin Yin; Guang Wang. |
| Aim: To study the genotype of cytochrome P450 1A1(CYP1A1) I462V and glutathions S-transferase M1( GSTM1) and the relationship of the genetic polymorphism of them with the susceptibility of lung cancer in Mongolia of China. 

Methods: Allele-specific PCR and a multiplex PCR were employed to identify the genotypes of I462V of CYP1A1 and GSTM1 in a case-control study of 210 lung cancer patients with bronchoscopy diagnosis and 210 matched controls free of malignancy.

Results: The frequencies of the variant CYP1A1(Val/Val) genotypes and GSTM1(-) in lung cancer groups were higher than that in control groups (15.24% vs 7.4% and 56.67% vs 40.95% ). The individuals who carried with CYP1A1(Val/Val)... |
| Tipo: Manuscript |
Palavras-chave: Cancer; Pharmacology. |
| Ano: 2009 |
URL: http://precedings.nature.com/documents/3336/version/1 |
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| Dharmendra K. Yadav; Feroz Khan; Santosh K. Srivastava. |
| Camptothecin (CPT) is a cytotoxic quinoline alkaloid which inhibits the DNA enzyme Topoisomerase-I (Topo-I) and has shown remarkable anticancer activity in preliminary clinical trials. The major limitation is its low solubility and high adverse reaction. In the studied work, we performed molecular docking of CPT derivatives against Topo-I and developed the quantitative structure activity relationship (QSAR) model for anticancer activity screening. For QSAR, we used CPT and other anticancer drugs with its IC50 values. We used a total of forty seven anticancer drugs as training set and eight compounds as test set and thirty derivatives of CPT as query set. Total of fifty two chemical descriptors were used for the quantitative data calculation. Only four... |
| Tipo: Poster |
Palavras-chave: Cancer; Chemistry; Pharmacology; Bioinformatics; Plant Biology. |
| Ano: 2011 |
URL: http://precedings.nature.com/documents/5773/version/1 |
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| Registros recuperados: 273 | |
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