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1.
Membranes (Basel) ; 11(12)2021 Nov 29.
Artigo em Inglês | MEDLINE | ID: mdl-34940446

RESUMO

Membrane Lipid Replacement (MLR) uses natural membrane lipid supplements to safely replace damaged, oxidized lipids in membranes in order to restore membrane function, decrease symptoms and improve health. Oral MLR supplements contain mixtures of cell membrane glycerolphospholipids, fatty acids, and other lipids, and can be used to replace and remove damaged cellular and intracellular membrane lipids. Membrane injury, caused mainly by oxidative damage, occurs in essentially all chronic and acute medical conditions, including cancer and degenerative diseases, and in normal processes, such as aging and development. After ingestion, the protected MLR glycerolphospholipids and other lipids are dispersed, absorbed, and internalized in the small intestines, where they can be partitioned into circulating lipoproteins, globules, liposomes, micelles, membranes, and other carriers and transported in the lymphatics and blood circulation to tissues and cellular sites where they are taken in by cells and partitioned into various cellular membranes. Once inside cells, the glycerolphospholipids and other lipids are transferred to various intracellular membranes by lipid carriers, globules, liposomes, chylomicrons, or by direct membrane-membrane interactions. The entire process appears to be driven by 'bulk flow' or mass action principles, where surplus concentrations of replacement lipids can stimulate the natural exchange and removal of damaged membrane lipids while the replacement lipids undergo further enzymatic alterations. Clinical studies have demonstrated the advantages of MLR in restoring membrane and organelle function and reducing fatigue, pain, and other symptoms in chronic illness and aging patients.

2.
PLoS One ; 13(6): e0197897, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29856778

RESUMO

Membrane integrity is essential in maintaining sperm viability, signaling, and motility, which are essential for fertilization. Sperm are highly susceptible to oxidative stress, as they are rich in sensitive polyunsaturated fatty acids (PUFA), and are unable to synthesize and repair many essential membrane constituents. Because of this, sperm cellular membranes are important targets of this process. Membrane Lipid Replacement (MLR) with glycerophospholipid mixtures (GPL) has been shown to ameliorate oxidative stress in cells, restore their cellular membranes, and prevent loss of function. Therefore, we tested the effects of MLR on sperm by tracking and monitoring GPL incorporation into their membrane systems and studying their effects on sperm motility and viability under different experimental conditions. Incubation of sperm with mixtures of exogenous, unoxidized GPL results in their incorporation into sperm membranes, as shown by the use of fluorescent dyes attached to GPL. The percent overall (total) sperm motility was increased from 52±2.5% to 68±1.34% after adding GPL to the incubation media, and overall sperm motility was recovered from 7±2% after H2O2 treatment to 58±2.5%)(n = 8, p<0.01) by the incorporation of GPL into sperm membranes. When sperm were exposed to H2O2, the mitochondrial inner membrane potential (MIMP), monitored using the MIMP tracker dye JC-1 in flow cytometry, diminished, whereas the addition of GPL prevented the decrease in MIMP. Confocal microscopy with Rhodamine-123 and JC-1 confirmed the mitochondrial localization of the dyes. We conclude that incubation of human sperm with glycerolphospholipids into the membranes of sperm improves sperm viability, motility, and resistance to oxidizing agents like H2O2. This suggests that human sperm might be useful to test innovative new treatments like MLR, since such treatments could improve fertility when it is adversely affected by increased oxidative stress.


Assuntos
Glicerofosfolipídeos/química , Glicerofosfolipídeos/farmacologia , Micelas , Estresse Oxidativo/efeitos dos fármacos , Motilidade dos Espermatozoides/efeitos dos fármacos , Espermatozoides/citologia , Espermatozoides/efeitos dos fármacos , Adulto , Membrana Celular/efeitos dos fármacos , Membrana Celular/metabolismo , Técnicas de Cultura , Fármacos para a Fertilidade Masculina/química , Fármacos para a Fertilidade Masculina/farmacologia , Glicerofosfolipídeos/metabolismo , Humanos , Masculino , Espermatozoides/metabolismo
3.
Discoveries (Craiova) ; 4(1): e54, 2016 Feb 18.
Artigo em Inglês | MEDLINE | ID: mdl-32309576

RESUMO

Membrane Lipid Replacement is the use of functional oral supplements containing cell membrane glycerolphospholipids and antioxidants to safely replace damaged membrane lipids that accumulate during aging and in various chronic and acute diseases. Most if not all clinical conditions and aging are characterized by membrane phospholipid oxidative damage, resulting in loss of membrane and cellular function. Clinical trials have shown the benefits of Membrane Lipid Replacement supplements in replenishing damaged membrane lipids and restoring mitochondrial function, resulting in reductions in fatigue in aged subjects and patients with a variety of clinical diagnoses. Recent observations have indicated that Membrane Lipid Replacement can be a useful natural supplement strategy in a variety of conditions: chronic fatigue, such as found in many diseases and disorders; fatiguing illnesses (fibromyalgia and chronic fatigue syndrome); chronic infections (Lyme disease and mycoplasmal infections); cardiovascular diseases; obesity, metabolic syndrome and diabetes; neurodegenerative diseases (Alzheimer's disease); neurobehavioral diseases (autism spectrum disorders); fertility diseases; chemical contamination (Gulf War illnesses); and cancers (breast, colorectal and other cancers). Membrane Lipid Replacement provides general membrane nutritional support during aging and illness to improve membrane function and overall health without risk of adverse effects.

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