peptides

Naked DNA Vaccination May Conquer Arthritis and Multiple Sclerosis

...acked. The damage is done by small proinflammatory peptides called proinflammatory cytokines and chemokines. O... introducing engineered genes based on the culprit peptides into the body. When the patient's immune system sees these genes as outside invaders, it produces it...

Breast milk is essential

...breast milk. Their report said biologically active peptides in human milk may influence brain growth as well as the high levels of long chain polyunsaturated fatty acids....

DNA biochip for genetic screening

...ly DNA, but other types of molecules, such as RNA, peptides or libraries of organic molecules. Other prevalent technologies do not have the same potential and capabilities as ours.” Gao and her team plan to make the biochips available for fields such as genomics, proteomics, chemical genetics and other new a...

Hidden influenza virus protein found

...g through bits and pieces of “junk” peptides. Junk peptides are short protein molecules the virus creates once... goes wary, Yewdell explains. In other words, junk peptides result from genetic mistakes. The immune system cells of mice, in fact, did recognise one of the pe...

Eczema patients lack natural antibiotic in skin

...ngs demonstrate the clinical significance of these peptides in humans, and suggest that a medication containing or inducing the peptides may one day be used to fight the infections that plague millions of atopic dermatitis patients. "T...

Cure For Persistent Oral Fungal Problem May Be Possible

...d to treat fungal infections of the mouth. These peptides have strong anti-fungal properties, even against f...istant to medication. Also the properties of these peptides can be increased if they can be protected from the enzymes that may destroy them. This may be achie...

Early diagnosis for autism from blood tests may be possible

...in the number and types of immune cells, proteins, peptides and metabolites in the blood drawn from them. The data generated were huge in amount and it may take more time to fully assimilate them. However the initial findings of the tests suggest that autistic children have 20% increase in antibody producing ...

Injury to knee may result in arthritis, but it is possible to prevent it

...chers had found that the body produces more of CII peptides when knee injury happens. This indicates that the injury had damaged the joint cartilage. The researchers had developed a test that will quantify the exact breakdown of the lubricin after knee injury. Reference: Arthritis & Rheumatism, June 2005...

New Insight To The Role Of Peptide Signals

...ic neurons use the chemical signals of 60 types of peptides to communicate. These peptides when are released within the brain, control different forms of behavior that includes social and sex...

Slowing Down The Progression Of Alzheimer’s Disease

...f a recent study researchers say that a mixture of peptides derived from colostrum could help slow the progression of Alzheimer's disease by reducing the build-up of beta amyloid, a toxic protein that accumulates in the brains of Alzheimer's sufferers. ReGen Therapeutics, a UK firm first gained the rights to...

Scientists Discover Ways To Block Virus From Attacking Cells

...effen School of Medicine at UCLA had found out the peptides that ward off viruses from entering the cells. Fi...fied more than 20 years ago at UCLA, defensins are peptides naturally produced by the immune system // to ward off viruses. However, it was unclear how defensin...

Researchers Discover New Clues To Identify Tooth Decay

...herapy points out that comparison of antimicrobial peptides that occur in the human saliva can lead to new way...sk and to the development of new ways to use these peptides for therapeutic treatment. Source: Newswise...

Dermaseptins: Potent vaginal contraceptives

...ginal irritation or other toxicity. Antimicrobial peptides are produced by both prokaryotic and eukaryotic ce...ial use as therapeutic agents. These antimicrobial peptides include dermaseptins (DSs), a family of five structurally and functionally related peptides that wer...

Mushroom found to be a source of a new antibiotic: Plectasin

...cs called defensins, which are small cysteine-rich peptides found to be active against bacteria, fungi and viruses//. A recent research, published in the October issue of Nature, describes plectasin-the first defensin to be isolated from a fungus, the saprophytic ascomycete Pseudoplectania nigrella. Plectas...

Leeches Provide Clues Regarding The Prevention Of Heart Disease

...ell. The researchers have identified and analyzed peptides and small proteins in the saliva of the medical leech Hirudo medicinalis for their ability to bind to molecules called serine proteases. These molecules have the ability to prevent coagulation or clotting of blood. Of the nearly 2,000 molecules the...

Compound In Grapes And Red Wine To Counter Alzheimer's Disease

...cts by stimulating the degradation of amyloid-beta peptides by the proteasome, a barrel-shaped multi-protein complex that can specifically digest proteins into short polypeptides and amino acids. However, the authors stress that eating grapes may not be a cure for Alzheimer's disease, because natural resver...

Beware Of Bogus Claims by HGH Spray Internet Marketers

...ds, other nutrients and in some cases, proprietary peptides purportedly aimed at enhancing the pituitary's ability to release HGH. There are no controlled and independently validated clinical studies that affirm that sprays and nutritional HGH products are as efficacious as injectable (pharmaceutical) HGH in ...

The Combo Treatment Is Effective to Treat Type 1 Diabetes in Mice

...this small chain molecules called nasal proinsulin peptides were also injected. This acts like a vaccine there...ly tested anti-CD3 antibodies and nasal proinsulin peptides separately in human clinical trials. They have never used the two therapies together. A couple of cl...

Transporter offers reliable clues for safer pain medicine

...eive the pain threshold of AIDS patients. Opioid peptides are natural pain relievers with receptors – first ...de Dr. Ganapathy with a number of synthetic opioid peptides to see whether they are substrates, or blockers, of this transport system. 'We know this recognize...

New Molecular Treatment Identified To Treat Blood Cell Cancers

...escent dyes to LLP2A peptides; when the dye-tagged peptides found and locked onto a tumor, the tumor became visible to a near-infrared scanner. LLP2A was identified using a combinatorial chemistry method Lam developed more than a decade ago. Known as the ‘one-bead-one-compound’ method, Lam's technique allows ...

Restriction of Carbohydrates to Prevent Alzheimer's Disease

...le with AD exhibit elevated levels of beta-amyloid peptides that cause plaque buildup in the brain (the main characteristic of AD). Beta-amyloid peptides activate SIRT1, a member of a broad family of proteins known as sirtuins which influence a variety o...

Bioinformatics Made a Boon In Immune Response Study - LIAI Finds

... the need to manufacture and test large numbers of peptides in the laboratory to find which ones will initiate...ring the results against laboratory testing of the peptides and whole infectious virus in mice. ‘We studied the total response directed against infected cells,’...

Advance in Program for Development of Non-Intravenous Therapy for Hemophilia

...de-based drugs. Having recognized the potential of peptides as natural starting molecules for drug discovery, ...-of-the-art technologies to identify and transform peptides into drugs. The company's lead product, Icatibant, is currently in Phase III clinical trials for the...

Discovery of Elevated Amyloid Peptide levels could lead to Alzheimer’s Preventio

...delayed by eliminating plaque causing beta-amyloid peptides in the brain. An estimated 4.5 million Americans... AD dementia by eliminating amyloid plaque-causing peptides in the brain.’ People with AD exhibit elevated levels of beta-amyloid peptides that cause plaque b...

New Technique Identifies Unknown Genetic Mutations That Can Cause Cancer

...s called peptides. Next, they extracted all of the peptides carrying extra phosphates and sent them through a ...ibrary of Medicine, identifying each of the team's peptides as a segment of a specific protein. The analysis showed that many of the peptides came from tyrosine...

Brain Regulation Present Even In Spineless Creatures

...also revealed that glutamate and FMRFamide-related peptides are the two brain chemicals that enable cuttlefish (cephalopod) to change skin color or skin patterns in just seconds. In a paper that appeared online July 25 ahead of regular publication in the journal Integrative and Comparative Biology, Tublitz ...

'Mix and match' of proteins may have a significant role in immunity

...rface, were studied by the team. T-cells use these peptides to identify a foreign body. Degradation of protein...rmation of peptides. "The proteasome can splice peptides together," says Warren. “Every once in a while, new peptide bonds will be created, not just destroye...

Weird Protein Puzzles Researchers

...sobriquet as the “Frankenstein protein”, which has peptides attached// together in a pattern which is exactly ...rom invading cells, as soon as it senses the alien peptides on the surface of the cells. Similarly, the peptides present on the surface of a developing cancer ...

Protein Splicing Upsets the DNA Colinearity Paradigm

...er person - when T lymphocytes recognize antigenic peptides displayed on the cell surface. The antigens are cr... the cell machinery that cut foreign proteins into peptides that are then displayed on the cell surface for recognition and destruction by CD8+ T lymphocytes. H...

A Promising New Vaccination Strategy for Late-Stage Melanoma

...iously reported on trials testing several NY-ESO-1 peptides and whole-protein, and is currently evaluating DNA, viral vector, and bacterial vector-based NY-ESO-1 vaccines. Most notably, a CVC team based in Melbourne reported last year on the efficacy of a NY-ESO-1 peptide vaccine used in combination with ISCO...

Food addiction similar to Drug addiction!!

...vagus nerve making the stomach expand and generate peptides that sends a message of “fullness” to the brain. “We know that if we eat, our stomach sends a signal to the brain via the vagus nerve. The ingredients of food touch the wall of the stomach and the signal goes through to the brain to say ‘eat more’ ...

New Drug Blocks Influenza, Including Bird Flu Virus

...alities of the peptide were observed after similar peptides were found by Brandt and his colleagues to stop herpes simplex virus infection. The Wisconsin work was supported by grants from the UW-Madison School of Medicine and Public Health Education and Research Committee, the National Institutes of Health ...

Genes determine the capacity to fight HIV in early stages

...wn to bind to those HLA types to see if particular peptides were more powerful in activating the HIV-specific CD8 response. The researchers found that, for many varieties of HLA, only a few HIV protein fragments were responsible for the activation of CD8 T cells early in infection. In addition, the same HLA ...

MIT Creates 3-D Scaffold for Growing Stem Cells

...ny fragments of amino acids called self-assembling peptides to organize themselves into useful structures. Working with visiting graduate student Fabrizio Gelain from Milan, Zhang created a designer scaffold from a network of protein nanofibers, each 5,000 times thinner than a human hair and containing pores ...

Scientists Come Up With A Powerful Weapon To Fight Drug Resistant Bacteria

...uced by all organisms. Because these antimicrobial peptides (AMPs) are positively charged, they are attracted ...enough, they managed to design these new synthetic peptides (protein fragments) to contain only four amino acids, as opposed to the 12 - 50 found in their natur...

Buckyballs Used as 'Passkey' into Cancer Cells

... with pheylalanine as a link in their chain, these peptides did not pass through the cell walls. Barron's gr...dren's Cancer Center, and found the Baa-containing peptides could mimick viral proteins and pass through the walls of cancer cells. The peptides were found effe...

New Test Predicts CLL’s Sensitivity to Experimental Drug

...lls; then they exposed them to protein fragments – peptides – that were known to interact with survival molecules like Bcl-2. "If they interact, then the cell is primed to die, and the test will identify which of the survival molecules is keeping the cells alive," he added. "Then you know that to kill the cel...

Man-Made Proteins Could Be More Useful Than Real Ones

...hepartz said. For example, when helices of natural peptides nestle against one another, often their “side chains” extend from the sides of each helix, fitting together like ridges in grooves. The a-peptide helices, however, are structured so that their side chains alternate like interlocking fingers. Schep...

Bacteria Fighter Goes Where Antibiotics Can't

...t bacteria. Unlike most antibiotics, antimicrobial peptides can sidestep such resistance mechanisms and destro...n a targeted cell. For this reason, “antimicrobial peptides present an obvious advantage over conventional antibiotics,” said Mor. Yet one of the features tha...

Common Ingredient in Big Macs and Sodas Can Stabilize Gold Nanoparticles for Medical Use

...aid. The new generation of trimeric amino acids peptides discovered by Katti in 1999 (referred to by Amijii as 'Katti Peptides') have provided a solid chemical platform and have become sources of a number of other discoveries. Their applications in the development of drugs for Wilscons' disease; their util...

Natural Antibiotics Yield Secrets to Atom-level Imaging Technique

...erties of natural antibiotics called antimicrobial peptides (AMPs), which are produced by virtually all animal...years, they're still puzzling over exactly how the peptides wipe out bacteria and other microbes. Unlike conventional antibiotics, which typically inhibit speci...

Scientists Explore Ways to Reduce Insulin Resistance by ‘handcuffing’ Gens

... This was discovered after ucocortin 2. Both are peptides produced in the insulin secreting cells of the pancreas and both are responsible for the increased production of insulin, when a diet high in sugar and fat is taken. The scientists led by Wylie Vale, discovered that when mice bred without the gene...

Penn Scientists Engineer Small Molecules to Probe Proteins Deep Inside Cell Membrane

...y of Pennsylvania School of Medicine have designed peptides that are able to bind to specific regions of trans...cience, looks at how the binding of these designed peptides affects the crucial first steps in blood clotting. "We can now actually interrogate parts of prote...

Breast Cancer Vaccine Stimulates Potent Immune Response to Cancer Cells

...s long as 39 weeks. Because the use of synthetic peptides alone generally does not trigger a strong immune r...ain the immune system to recognize these synthetic peptides as dangerous foreign agents of the HER-2/neu gene by mimicking what the bacteria would do in your bo...

Head and Neck Cancer Vaccine Targets Proteins to Create Immune Response

...egy for head and neck cancer that targets multiple peptides (parts of proteins) to activate the immune system/... p53 also expresses unaltered, or "wild-type," p53 peptides in tumors. When presented on dendritic cells, these wild-type p53 peptides may induce an immune resp...

Super Fruit Fly may Harbor Hope for Human Longevity

...Roberts and his group literally threw trillions of peptides at the receptor and saved the ones that stuck. W...er multiple cycles, the researchers had a group of peptides that fixed to the receptor and not to any other protein. Fruit flies genetically transformed to pr...

Specific Imbalance Between Two Peptides may Cause Alzheimer's

..., suggesting that a specific imbalance between two peptides may be responsible for preventing this form of dem... in Taiji, an ancient Chinese philosophy. When the peptides are produced in the correct proportions, the brain is healthy; but when that delicate balance is cha...

Appetite-regulating Peptides Influence Alcohol Cravings

A new study has confirmed that appetite-regulating peptides leptin and ghrelin influence alcohol cravings for ...e chose to examine leptin and ghrelin because both peptides are of high importance in appetite regulation and both have already been subject to former investiga...

US Professors Develop Fusion Protein to Fight Cancer

...he product of joining two genes or two proteins or peptides together. Fusion proteins can happen naturally or it can be created artificially in a laboratory for research purposes. The newly developed protein by Thomas Pento and Roger Harrison can keep some types of cancer cells from ingesting a vital protei...

Researchers Identifies Molecules That is Effective in Fighting Against Breast Cancer

... researchers had shown that 8-mer and cyclic 9-mer peptides inhibit breast cancer in mouse and rat models, interacting with an unsolved receptor, while peptides smaller than eight amino acids did not. The Hamilton researchers used advanced computational meth...

New Technique Dissects Stem Cells' Picky Likes, Dislikes

...rfaces of specially treated microscope slides. The peptides were arranged in a regular pattern of squares, eac...ent conditions within a single square inch. The peptides her team chose to test first come from a major protein component of the ECM called laminin. Laminin ...