14102 studies
Human rhinoviruses commonly cause upper respiratory infections, which may be complicated by secondary bacterial infection. Vitamin D replacement reduces risk of acute respiratory infections in vitamin D-deficient individuals, but the mechanisms by wh…
Antimicrobial peptides (AMPs) are a diverse family of peptides that defend the mucosal surfaces of the oral cavity and other locations. Many AMPs have multiple functions and properties that influence aspects of innate defense and colonization by micr…
Antimicrobial peptides have a great potential to replace antibiotics in the treatment of bacterial infections. In order to improve the its stability, the antimicrobial peptides were incorporated in poly(L-lactic acid-co-D,L-mandelic acid) (LA-co-MA)…
Carica papaya is a perennial plant containing bioactive constituents with free radical-scavenging and immune-modulating activities. In contrast, the immune suppression is predominant in the periparturient period, where oxidative stress has a substant…
INTRODUCTION: Sepsis can result in acute lung injury. LL-37 is a small cationic host defense peptide involved in anti-inflammatory. In the current study, it was hypothesized that antimicrobial peptide LL-37 could play a protective role in attenuating…
BACKGROUND: Antimicrobial peptides play an important role in the local defence of oral cavity. Cigarette smoke has detrimental effects on immune defence mechanisms. The effect of passive smoking on salivary LL-37, as an antimicrobial peptide, in chil…
In diabetes, multipotent stromal cells (MSCs) are functionally deficient. It is unknown, however, whether their antibacterial function is compromised. In this study, MSCs were isolated from the bone marrow samples provided by nine diabetic and six no…
PURPOSE: Although Mycobacterium bovis Bacillus Calmette-Guérin (BCG) is the most widely used bladder cancer immunotherapy, innate immune responses involving antimicrobial peptides (AMPs) cause BCG failure and unwanted side effects. Here, we generated…
Ethanol has been found to affect pulmonary cells by interfering with vitamin D metabolism and pulmonary defense mechanisms. The objective of this study was to understand the mechanisms of ethanol's disruptive influence on the vitamin D pathway and in…
Stimuli-responsive nanocarriers based on lipid self-assemblies have the potential to provide targeted delivery of antimicrobial peptides, limiting their side effects while protecting them from degradation in the biological environments. In the presen…
Dermal fibroblasts (dFBs) resist infection by locally differentiating into adipocytes and producing cathelicidin antimicrobial peptide in response to Staphylococcus aureus (S. aureus). Here, we show that neonatal skin was enriched with adipogenic dFB…
Superresolution, single-particle tracking reveals effects of the cationic antimicrobial peptide LL-37 on thecytoplasm. Seconds after LL-37 penetrates the cytoplasmic membrane, the chromosomal DNA becomes rigidified on a length scale of ∼30 nm, eviden…
OBJECTIVE: The autoimmune etiology in psoriasis remains to be clarified. We therefore undertook this study to identify novel pathogenic autoantigens and autoantibodies in patients with psoriasis, with the aim of shedding light on the molecular and ce…
Dental plaque is closely related to the occurrence of dental caries, of which the main causative bacterium is Streptococcus mutans (S. mutans). In this study, to create potent antibiofilm agents, we chose a human antimicrobial peptide LL-37 as our st…
Proline-arginine-rich (PR)-39 is neutrophil antimicrobial peptide that has potent antimicrobial activity against a broad spectrum of microorganisms, including bacteria, fungi, and some enveloped viruses as a part of the innate immune system. We analy…
The development of some cancers is associated with vitamin D deficiency. We suggest that reduced conversion of 25-hydroxyvitamin D (25(OH)D) to 1,25-dihydroxyvitamin D (1,25(OH)D) and the resulting modification of tissue specific immune responses may…
BACKGROUND: Rosacea is a chronic inflammatory skin condition whose etiology has been linked to mast cells and the antimicrobial peptide cathelicidin LL-37. Individuals with refractory disease have demonstrated clinical benefit with periodic injection…
Temporins are anti-microbial peptides synthesized in the skin of frogs of thefamily. The few studies to date that have examined their anti-viral properties have shown that they have potential as anti-viral therapies. In this work, we evaluated the an…
BACKGROUND: Bacteriophages have been introduced as living drugs for infectious diseases; thus, they may provide an alternative to conventional acne therapeutics in patients with non-responsive acne. OBJECTIVE: We investigated the effect of bacterioph…
OBJECTIVE: Neutrophil extracellular traps (NET), produced by activated polymorphonuclear neutrophils (PMN), are supposed to play a role in the pathogenesis of rheumatoid arthritis (RA), a chronic inflammatory autoimmune disease characterized by anti-…