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The role of ubiquitin-mediated pathways in regulating synaptic development, axonal degeneration and regeneration: insights from fly and worm.

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The covalent attachment of the 76 amino acid peptide ubiquitin to target proteins is a rapid and reversible modification that regulates protein stability, activity and localization. As such, it is a potent mechanism for sculpting the synapse. Recent studies from two genetic model organisms,

Cytotoxic T cells against a peptide of Yo protein in patients with paraneoplastic cerebellar degeneration and anti-Yo antibody.

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Anti-Yo antibodies are present in the sera and cerebrospinal fluid of some patients with paraneoplastic cerebellar degeneration (PCD), but there is no evidence that the presence of anti-Yo antibodies causes the Purkinje cell loss seen in PCD patients. We examined the level of cytotoxic T lymphocyte

Tackling the aging process with bio-molecules: a possible role for caloric restriction, food-derived nutrients, vitamins, amino acids, peptides, and minerals.

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Aging is a multifactorial process leading to general deterioration in many tissues and organs, accompanied by an increased incidence and severity of a wide variety of chronic, incurable, and often fatal diseases. A possibility of slowing down the aging process and improving the quality of life in

In vivo calpain/caspase cross-talk during 3-nitropropionic acid-induced striatal degeneration: implication of a calpain-mediated cleavage of active caspase-3.

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The role of caspases and calpains in neurodegeneration remains unclear. In this study, we focused on these proteases in a rat model of Huntington's disease using the mitochondrial toxin 3-nitropropionic acid (3NP). Results showed that 3NP-induced death of striatal neurons was preceded by cytochrome

Cloning of a splice variant of the pituitary adenylate cyclase-activating polypeptide (PACAP) type I receptor.

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The rat pancreatic acinar cell line AR 4-2J is endowed with numerous PACAP type I receptors (PACAPR1). The cDNA of this receptor was PCR amplified at low stringency using two degenerate primers based on conserved sequences in the TM2 and TM6 segments of secretin, parathormone and calcitonin

New frontiers in the biology of GLP-2.

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Glucagon-like peptide-2 (GLP-2) is a 33 amino acid peptide hormone released from the intestinal endocrine cells following nutrient ingestion. GLP-2 exerts trophic effects on the small and large bowel epithelium via stimulation of cell proliferation and inhibition of apoptosis. GLP-2 also upregulates

Is Alzheimer's disease a result of presynaptic failure? Synaptic dysfunctions induced by oligomeric beta-amyloid.

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Since Alois Alzheimer first described morphological alterations associated with his patient's dementia more than 100 years ago, Alzheimer's disease (AD) was defined as neurodegenerative disease caused by extracellular deposits of misfolded proteins. These amyloid plaques and neurofibrillary tangles

Measurement of gluten using a monoclonal antibody to a coeliac toxic peptide of A-gliadin.

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BACKGROUND Future European Community regulations will require a sensitive and specific assay for measurement of coeliac toxic gluten proteins in foods marketed as gluten-free. To avoid spurious cross reactions with non-toxic proteins, specific antibodies and target antigens are required. A synthetic

Prolonged cerebellin administration inhibits the growth, but enhances steroidogenic capacity of rat adrenal cortex.

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Cerebellin is a 16-amino acid peptide, that has been previously found to acutely stimulate steroid secretion from rat adrenal cortex in vivo and in vitro. We have investigated the effects of a prolonged cerebellin treatment (daily injections of 15 nmoles/kg for 6 consecutive days) on the growth and

Identification of the putative cytadhesin gene of Mycoplasma gallisepticum and its use as a DNA probe.

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A portion of the putative Mycoplasma gallisepticum (MG) cytadhesin gene was identified and used as a diagnostic DNA probe. Degenerate oligonucleotide primers corresponding to conserved regions of the cytadhesin proteins from two human mycoplasmas, M. pneumoniae and M. genitalium, were synthesized

Screening and production of an affibody inhibiting the interaction of the PD-1/PD-L1 immune checkpoint.

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An affibody is a 58 amino acids peptide derived from the Z domain of staphylococcal protein A and generally applied in areas such as imaging diagnosis, clinical therapeutics and biotechnology research. To screen for an affibody targeting the immune checkpoint PD-L1, a combinatorial affibody library

Increased oligodendrogenesis by humanin promotes axonal remyelination and neurological recovery in hypoxic/ischemic brains.

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Oligodendrocytes are the predominant cell type in white matter and are highly vulnerable to ischemic injury. The role of oligodendrocyte dysfunction in ischemic brain injury is unknown. In this study, we used a 24-amino acid peptide S14G-Humanin (HNG) to examine oligodendrogenesis and neurological

Development of novel NEMO-binding domain mimetics for inhibiting IKK/NF-κB activation.

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Nuclear factor κB (NF-κB) is a transcription factor important for regulating innate and adaptive immunity, cellular proliferation, apoptosis, and senescence. Dysregulation of NF-κB and its upstream regulator IκB kinase (IKK) contributes to the pathogenesis of multiple inflammatory and degenerative

Characterization of cDNA encoding molt-inhibiting hormone of the crab, Cancer pagurus; expression of MIH in non-X-organ tissues.

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Synthesis of ecdysteroids (molting hormones) by crustacean Y-organs is regulated by a neuropeptide, molt-inhibiting hormone (MIH), produced in eyestalk neural ganglia. We report here the molecular cloning of a cDNA encoding MIH of the edible crab, Cancer pagurus. Full-length MIH cDNA was obtained by

Bonded dimethylacrylamide as a permanent coating for capillary electrophoresis.

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A method for coating capillaries for capillary electrophoresis with chemically bonded polydimethylacrylamide has been developed, and the properties of the capillaries have been evaluated. The coated capillaries provided high separation efficiency, 12 x 10(5) theoretical plates/m was obtained for

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