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1.
Lipids Health Dis ; 20(1): 178, 2021 Dec 13.
Artigo em Inglês | MEDLINE | ID: mdl-34895241

RESUMO

BACKGROUND: Cordyceps militaris is cultured widely as an edible mushroom and accumulating evidence in mice have demonstrated that the polysaccharides of Cordyceps species have lipid-lowering effects. However, lipid metabolism in mice is significantly different from that in humans, making a full understanding of the mechanisms at play critical. METHODS: After 5 months, the hamsters were weighed and sampled under anesthesia after overnight fasting. The lipid-lowering effect and mechanisms of the polysaccharide CM1 was investigated by cellular and molecular technologies. Furthermore, the effect of the polysaccharide CM1 (100 µg/mL) on inhibiting adipocyte differentiation was investigated in vitro. RESULTS: CM1, a polysaccharide from C. militaris, significantly decreased plasma total cholesterol, triglyceride and epididymal fat index in LDLR(+/-) hamsters, which have a human-like lipid profile. After 5 months' administration, CM1 decreased the plasma level of apolipoprotein B48, modulated the expression of key genes and proteins in liver, small intestine, and epididymal fat. CM1 also inhibited preadipocyte differentiation in 3T3-L1 cells by downregulating the key genes involved in lipid droplet formation. CONCLUSIONS: The polysaccharide CM1 lowers lipid and adipocyte differentiation by several pathways, and it has potential applications for hyperlipidemia prevention.


Assuntos
Adipócitos/efeitos dos fármacos , Diferenciação Celular/efeitos dos fármacos , Cordyceps/química , Polissacarídeos Fúngicos/farmacologia , Hiperlipidemias/tratamento farmacológico , Receptores de LDL/metabolismo , Animais , Cricetinae , Polissacarídeos Fúngicos/uso terapêutico , Immunoblotting , Masculino , Reação em Cadeia da Polimerase em Tempo Real
2.
Molecules ; 26(2)2021 Jan 06.
Artigo em Inglês | MEDLINE | ID: mdl-33419035

RESUMO

Mushrooms, the fruiting bodies of fungi, are known for a long time in different cultures around the world to possess medicinal properties and are used to treat various human diseases. Mushrooms that are parts of traditional medicine in Asia had been extensively studied and this has led to identification of their bioactive ingredients. North America, while home to one of the world's largest and diverse ecological systems, has not subjected its natural resources especially its diverse array of mushroom species for bioprospecting purposes: Are mushrooms native to North America a good source for drug discovery? In this review, we compile all the published studies up to September 2020 on the bioprospecting of North American mushrooms. Out of the 79 species that have been investigated for medicinal properties, 48 species (60%) have bioactivities that have not been previously reported. For a mere 16 selected species, 17 new bioactive compounds (10 small molecules, six polysaccharides and one protein) have already been isolated. The results from our literature search suggest that mushrooms native to North America are indeed a good source for drug discovery.


Assuntos
Agaricales/química , Descoberta de Drogas , Polissacarídeos Fúngicos , Proteínas Fúngicas , Polissacarídeos Fúngicos/química , Polissacarídeos Fúngicos/isolamento & purificação , Polissacarídeos Fúngicos/uso terapêutico , Proteínas Fúngicas/química , Proteínas Fúngicas/isolamento & purificação , Proteínas Fúngicas/uso terapêutico , Humanos , América do Norte
3.
Biol Pharm Bull ; 43(10): 1542-1550, 2020 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-32759548

RESUMO

The steatosis and resultant oxidative stress and apoptosis play the important roles in the progression of nonalcoholic fatty liver disease (NAFLD), therefore, searching for the effective drugs against NAFLD has been a hot topic. In this work, we investigated a hyperbranched proteoglycan, namely FYGL extracted from Ganoderma lucidum, inhibiting the palmitic acid (PA)-induced steatosis in HepG2 hepatocytes. FYGL compose of hydrophilic polysaccharide and lipophilic protein. Both moieties conclude the reductive residues, such as glucose and cystine, making FYGL capable of anti-oxidation. Herein, we demonstrated that FYGL can significantly inhibit the steatosis, i.e., decrease the contents of triglycerides (TG) and total cholesterol (TC) in hepatic cells on the mechanism of increasing the phosphorylation of AMP-activated protein kinase (AMPK) and acetyl-CoA carboxylase (ACC), therefore inhibiting the expressions of sterol regulatory element-binding protein 1 (SREBP1) and fatty acid synthase (FASN), furthermore leading to the carnitine palmitoyl transferase-1 (CPT-1) expression increased against steatosis induced by fatty acids oxidation. Meanwhile, FYGL can alleviate reactive oxygen species (ROS) and malondialdehyde (MDA), promote superoxide dismutase (SOD) and total antioxidant capacity (T-AOC). Moreover, FYGL can prevent the cells from apoptosis by regulating the apoptosis-related protein expressions and alleviating oxidative stress. Notably, FYGL could significantly recover the cells activity and inhibit lactate dehydrogenase (LDH) release which were negatively induced by high concentration PA. These results demonstrated that FYGL has the potential functions to prevent the hepatocytes from lipid accumulation, oxidative stress and apoptosis, therefore against NAFLD.


Assuntos
Antioxidantes/farmacologia , Polissacarídeos Fúngicos/farmacologia , Hepatopatia Gordurosa não Alcoólica/tratamento farmacológico , Proteoglicanas/farmacologia , Reishi/química , Antioxidantes/uso terapêutico , Apoptose/efeitos dos fármacos , Polissacarídeos Fúngicos/uso terapêutico , Células Hep G2 , Hepatócitos/efeitos dos fármacos , Hepatócitos/fisiologia , Humanos , Lipogênese/efeitos dos fármacos , Hepatopatia Gordurosa não Alcoólica/patologia , Estresse Oxidativo/efeitos dos fármacos , Ácido Palmítico/toxicidade , Proteoglicanas/uso terapêutico
4.
Int J Mol Sci ; 19(11)2018 Oct 28.
Artigo em Inglês | MEDLINE | ID: mdl-30373293

RESUMO

: Pleurotus eryngii is recognized for its prominent nutritional and medicinal value. In our study, we tested the effect of glucans on lipopolysaccharide (LPS)-induced production of TNF-α. We demonstrated that glucan extracts are more effective than mill mushroom preparations. Additionally, the effectiveness of stalk-derived glucans were slightly more pronounced than of caps. Cap and stalk glucans from mill or isolated glucan competed dose-dependently with anti-Dectin-and anti-CR-3 antibodies, indicating that they contain ß-glucans recognized by these receptors. Using the dextran sulfate sodium (DSS)-inflammatory bowel disease mice model, intestinal inflammatory response to the mill preparations was measured and compared to extracted glucan fractions from caps and stalks. We found that mill and glucan extracts were very effective in downregulating IFN-γ and MIP-2 levels and that stalk-derived preparations were more effective than from caps. The tested glucans were equally effective in regulating the number of CD14/CD16 monocytes and upregulating the levels of fecal-released IgA to almost normal levels. In conclusion, the most effective glucans in ameliorating some IBD-inflammatory associated symptoms induced by DSS treatment in mice were glucan extracts prepared from the stalk of P. eryngii. These spatial distinctions may be helpful in selecting more effective specific anti-inflammatory mushrooms-derived glucans.


Assuntos
Anti-Inflamatórios/farmacologia , Colite Ulcerativa/tratamento farmacológico , Carpóforos/química , Polissacarídeos Fúngicos/farmacologia , Pleurotus/química , Animais , Anti-Inflamatórios/uso terapêutico , Linhagem Celular , Feminino , Polissacarídeos Fúngicos/análise , Polissacarídeos Fúngicos/uso terapêutico , Macrófagos/efeitos dos fármacos , Macrófagos/metabolismo , Camundongos , Camundongos Endogâmicos BALB C
5.
Int J Mol Sci ; 19(6)2018 May 24.
Artigo em Inglês | MEDLINE | ID: mdl-29794990

RESUMO

Antrodan, a unique protein-bound polysaccharide derived from the fungal mycelia of Antrodia cinnamomea, has been reported to exhibit antitumor and anti-metastatic effects on Lewis lung carcinoma (LLC) cells through direct action and immunomodulation in vitro. In this study, we investigated the combined treatment of antrodan with an anti-cancer drug-cisplatin-and its underlying molecular mechanisms of action in a mouse xenograft tumor model. C57BL/6 mice were implanted (s.c.) with LLCs for nine days, before administration with only antrodan (20 mg/kg and 40 mg/kg; p.o.) daily, only cisplatin (1 mg/kg; i.p.) twice per week, or a combination of both for an additional 28 days. As expected, antrodan on its own significantly inhibited metastasis of lung and liver tissues, while treatment with cisplatin only merely inhibited metastasis of the liver. Antrodan exhibited efficient adjuvant therapy in combination with cisplatin, by inhibiting the activities of the plasma urokinase plasminogen activator (uPA) and the liver matrix metalloproteinase 9 (MMP-9), as well as by inhibiting the phosphorylation of p38 and extracellular signal-regulated kinase 2 (ERK2) in lung and liver tissues. In addition, antrodan effectively ameliorated cisplatin-induced kidney dysfunction when treated combinatorially, as evidenced by a decrease in cisplatin-induced blood urea nitrogen (BUN) levels in plasma and in the level of p38 phosphorylation in the kidney. Mechanistically, the actions of antrodan on its own involved (i) reducing the activities of uPA and MMP-2 and -9 in plasma; (ii) reducing protein expression of MMP-2/9, and the phosphorylation of signal transducer and activator of transcription 3 (STAT3) and mitogen-activated protein kinases (MAPKs), including extracellular signal-regulated kinases (ERKs), c-Jun N-terminal kinases (JNKs), and p38 in lung and liver tissues; and (iii) enhancing immune system functions resulting in the promotion of an anti-metastatic response through immunomodulation, by increasing interferon-γ (IFN-γ) levels and decreasing interleukin-6 (IL-6) levels in plasma. These results demonstrated that antrodan provides a novel, complementary therapeutic strategy against cancer metastasis, by attenuating the activities of MMP-2 and -9 through the modulation of STAT3/MAPK/ERK/JNK signaling pathways, and of the host's immune system.


Assuntos
Antineoplásicos/uso terapêutico , Antrodia/química , Carcinoma Pulmonar de Lewis/tratamento farmacológico , Polissacarídeos Fúngicos/uso terapêutico , Animais , Antineoplásicos/administração & dosagem , Protocolos de Quimioterapia Combinada Antineoplásica , Carcinoma Pulmonar de Lewis/metabolismo , Carcinoma Pulmonar de Lewis/patologia , Linhagem Celular Tumoral , Cisplatino/administração & dosagem , Cisplatino/uso terapêutico , Polissacarídeos Fúngicos/administração & dosagem , Interferon gama/sangue , Interleucina-6/sangue , Fígado/metabolismo , Pulmão/metabolismo , MAP Quinase Quinase 4/genética , MAP Quinase Quinase 4/metabolismo , Masculino , Metaloproteinase 9 da Matriz/metabolismo , Camundongos , Camundongos Endogâmicos C57BL , Proteína Quinase 1 Ativada por Mitógeno/metabolismo , Metástase Neoplásica , Fator de Transcrição STAT3/genética , Fator de Transcrição STAT3/metabolismo , Ativador de Plasminogênio Tipo Uroquinase/metabolismo , Proteínas Quinases p38 Ativadas por Mitógeno/metabolismo
6.
Cell Immunol ; 320: 20-28, 2017 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-28942945

RESUMO

Non-steroidal anti-inflammatory drugs often cause ulcers in the human small intestine, but few effective agents exist to treat such injury. Ganoderma lucidum Karst, also known as "Reishi" or "Lingzhi", is a mushroom. We previously reported that a water-soluble extract from G. lucidum fungus mycelia (MAK) has anti-inflammatory effects in murine colitis induced by trinitrobenzene sulfonic acid, and induction of granulocyte macrophage colony-stimulating factor (GM-CSF) by MAK may provide anti-inflammatory effects. However, its effects on indomethacin-induced small intestinal injuries are unknown. The present study investigated the preventative effects of MAK via immunological function and the polysaccharides from MAK on indomethacin-induced ileitis in mice. Peritoneal macrophages (PMs) were stimulated in vitro with MAK and adoptively transferred to C57BL/6 mice intraperitoneally, which were then given indomethacin. Intestinal inflammation was evaluated after 24h. We performed in vivo antibody blockade to investigate the preventive role of GM-CSF, which derived from PMs stimulated with MAK. We then used PMs stimulated with MAK pre-treated by pectinase in an adoptive transfer assay to determine the preventive role of polysaccharides. Indomethacin-induced small intestinal injury was inhibited by adoptive transfer of PMs stimulated in vitro with MAK. In this transfer model, pre-treatment with anti-GM-CSF antibody but not with control antibody reversed the improvement of small intestinal inflammation by indomethacin. Pectinase pretreatment impaired the anti-inflammatory effect of MAK. PMs stimulated by MAK appear to contribute to the anti-inflammatory response through GM-CSF in small intestinal injury induced by indomethacin. The polysaccharides may be the components that elicit the anti-inflammatory effect.


Assuntos
Anti-Inflamatórios não Esteroides/efeitos adversos , Úlcera Duodenal/terapia , Polissacarídeos Fúngicos/uso terapêutico , Fator Estimulador de Colônias de Granulócitos e Macrófagos/imunologia , Indometacina/efeitos adversos , Intestino Delgado/efeitos dos fármacos , Macrófagos Peritoneais/imunologia , Reishi/química , Transferência Adotiva , Animais , Células Cultivadas , Misturas Complexas/química , Misturas Complexas/uso terapêutico , Úlcera Duodenal/induzido quimicamente , Úlcera Duodenal/imunologia , Polissacarídeos Fúngicos/isolamento & purificação , Intestino Delgado/imunologia , Macrófagos Peritoneais/transplante , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Micélio/química , Poligalacturonase/química
7.
Antibiot Khimioter ; 60(11-12): 29-34, 2015.
Artigo em Russo | MEDLINE | ID: mdl-27141644

RESUMO

Fractions of water soluble and alkali soluble polysaccharides, as well as fucogalactan, a water soluble polysaccharide, and xylomannan, an alkali soluble polysaccharide, were isolated from the Ganoderma lucidum submerged mycelium. When administered orally, the polysaccharides showed antitumor activity in vivo on murine models of solid tumors. Xylomannan and fucogalactan showed the highest antitumor activity. Sensitivity to xylomannan was more pronounced in adenocarcinoma Ca755 as compared to the T-cell lymphocytic leukemia P388. The antitumor activity of the water soluble polysaccharides total fractions from the mycelium and fruiting bodies of the G. lucidum strain was almost identical. The maximum antitumor effect of the mycelium water soluble polysaccharides total fraction was observed with the use of the daily dose of 2 mg/kg.


Assuntos
Adenocarcinoma/tratamento farmacológico , Antineoplásicos/isolamento & purificação , Polissacarídeos Fúngicos/isolamento & purificação , Leucemia P388/tratamento farmacológico , Neoplasias Mamárias Experimentais/tratamento farmacológico , Micélio/crescimento & desenvolvimento , Reishi/crescimento & desenvolvimento , Adenocarcinoma/patologia , Animais , Antineoplásicos/uso terapêutico , Linhagem Celular Tumoral , Feminino , Polissacarídeos Fúngicos/uso terapêutico , Humanos , Leucemia P388/patologia , Neoplasias Mamárias Experimentais/patologia , Camundongos Endogâmicos , Micélio/metabolismo , Transplante de Neoplasias , Reishi/metabolismo
8.
Int J Food Sci Nutr ; 65(4): 482-8, 2014 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-24392995

RESUMO

In the present study, the curative effects of crude polysaccharides (PSs) from mushrooms on the symptoms of alcoholic liver injury were investigated. PSs from Agaricus bisporus, Agaricus brasiliensis, and Phellinus linteus fruiting bodies were administered by gavage at levels of 100 mg per kg body weight per day for 7 d after the onset of the disease. The caspase-3 activity, mitochondrial membrane potential, mitochondrial outer membrane integrity of the liver tissues of sacrificed rats, and the serum alanine aminotransferase (ALT) levels were determined. In addition, light and transmission electron microscope (TEM) studies were performed for histopathological and cytological evaluations on liver sections. PSs from A. brasiliensis decreased ALT level and mitochondrial membrane potential and increased the outer membrane integrity; microscopic examinations also revealed normal hepatocytes and tissue. On the basis of our data, it can be argued that crude PSs from Agaricus brasiliensis have therapeutic potential for alcoholic liver injury.


Assuntos
Agaricus/química , Basidiomycota/química , Descoberta de Drogas , Fígado Gorduroso Alcoólico/tratamento farmacológico , Carpóforos/química , Polissacarídeos Fúngicos/uso terapêutico , Fígado/efeitos dos fármacos , Animais , Caspase 3/metabolismo , Etnofarmacologia , Fígado Gorduroso Alcoólico/metabolismo , Fígado Gorduroso Alcoólico/patologia , Fígado Gorduroso Alcoólico/fisiopatologia , Polissacarídeos Fúngicos/isolamento & purificação , Fígado/metabolismo , Fígado/fisiopatologia , Fígado/ultraestrutura , Masculino , Medicina Tradicional , Potencial da Membrana Mitocondrial/efeitos dos fármacos , Microscopia Eletrônica de Transmissão , Membranas Mitocondriais/efeitos dos fármacos , Membranas Mitocondriais/metabolismo , Infiltração de Neutrófilos/efeitos dos fármacos , Distribuição Aleatória , Ratos Sprague-Dawley
9.
Int J Biol Macromol ; 266(Pt 1): 130893, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38493817

RESUMO

Asian nations have long used edible fungi as food and medicine. Polysaccharides are among the main building units of the cell walls of fungi. Fungal polysaccharides have been documented in the medicinal and industrial sectors as products with a vast array of various biological activities and applications such as antitumor, antioxidant, anticancer, immunomodulation, and antiviral activities, etc. The goal of this review is to give insights into the various biological activities of mushroom polysaccharides and their potential as a medicine for human health. The extraction, purity, and structural analysis of fungal polysaccharides were also reviewed in this work. Also, future prospective, and challenges for fungal polysaccharides in pharmaceutical applications can be found in this review. Overall, this review serves as a valuable resource in exploring the therapeutic potential and applications of fungal polysaccharides. By building upon the existing knowledge base and addressing critical research gaps, researchers can find new opportunities for utilizing fungal polysaccharides as valuable therapeutic agents and functional ingredients in pharmaceuticals, nutraceuticals, and biotechnology.


Assuntos
Polissacarídeos Fúngicos , Animais , Humanos , Antioxidantes/química , Antioxidantes/farmacologia , Polissacarídeos Fúngicos/química , Polissacarídeos Fúngicos/farmacologia , Polissacarídeos Fúngicos/uso terapêutico , Fungos/efeitos dos fármacos , Valor Nutritivo , Polissacarídeos/química , Polissacarídeos/farmacologia
10.
Int J Biol Macromol ; 268(Pt 1): 131644, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38642691

RESUMO

Diabetes is a chronic metabolic disorder. Diabetes complications can affect many organs and systems in the body. Ganoderma lucidum (G. lucidum) contains various compounds that have been studied for their potential antidiabetic effects, including polysaccharides, triterpenoids (ganoderic acids, ganoderol B), proteoglycans, and G. lucidum extracts. G. lucidum polysaccharides (GLPs) and triterpenoids have been shown to act through distinct mechanisms, such as improving glucose metabolism, modulating the mitogen-activated protein kinase (MAPK) system, inhibiting the nuclear factor-kappa B (NF-κB) pathway, and protecting the pancreatic beta cells. While GLPs exhibit a significant role in controlling diabetic nephropathy and other associated complications. This review states the G. lucidum antidiabetic mechanisms of action and potential biologically active compounds that contribute to diabetes management and associated complications. To make G. lucidum an appropriate replacement for the treatment of diabetes with fewer side effects, more study is required to completely comprehend the number of physiologically active compounds present in it as well as the underlying cellular mechanisms that influence their effects on diabetes.


Assuntos
Diabetes Mellitus , Hipoglicemiantes , Polissacarídeos , Reishi , Triterpenos , Triterpenos/farmacologia , Triterpenos/química , Triterpenos/uso terapêutico , Humanos , Reishi/química , Hipoglicemiantes/farmacologia , Hipoglicemiantes/uso terapêutico , Hipoglicemiantes/química , Diabetes Mellitus/tratamento farmacológico , Diabetes Mellitus/metabolismo , Animais , Polissacarídeos/farmacologia , Polissacarídeos/química , Polissacarídeos/uso terapêutico , Polissacarídeos Fúngicos/farmacologia , Polissacarídeos Fúngicos/química , Polissacarídeos Fúngicos/uso terapêutico
11.
Glycoconj J ; 30(8): 759-68, 2013 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-23715800

RESUMO

The current study aims to determine the healing activity of water soluble polysaccharide-rich fraction of a wild mushroom, Termitomyces eurhizus (TEps) against the indomethacin induced gastric ulceration in mice model. Gastric tissue histology, myeloperoxidase (MPO) activity, cyclooxygenases (COX) 1 and 2 expression, prostaglandin E2 (PGE2) synthesis, and modulation of pro/anti inflammatory cytokines expression were studied for this purpose. Histological study shows that TEps (20 mg/kg) effectively healed the gastric ulceration. Based on biochemical results, the healing capacities of TEps could be attributed to reduction of MPO activity and protection of mucosal mucin content. Enhanced synthesis of PGE2 by modulation of COX-1 and COX-2 expression and a prominent shift of cytokines expression from pro (TNF-α, IL-1ß) to anti inflammatory (IL-10) side are also held responsible for ulcer healing. The preliminary study highlights the anti-ulcerogenic property of polysaccharide-rich fraction of Termitomyces eurhizus and opens an alternative cure for NSAID induced gastroduodenal diseases.


Assuntos
Extratos Celulares/uso terapêutico , Polissacarídeos Fúngicos/uso terapêutico , Úlcera Gástrica/tratamento farmacológico , Termitomyces/química , Animais , Citocinas/genética , Citocinas/metabolismo , Dinoprostona/genética , Dinoprostona/metabolismo , Indometacina/toxicidade , Camundongos , Mucinas/metabolismo , Peroxidase/genética , Peroxidase/metabolismo , Prostaglandina-Endoperóxido Sintases/genética , Prostaglandina-Endoperóxido Sintases/metabolismo , Úlcera Gástrica/induzido quimicamente , Úlcera Gástrica/metabolismo
12.
Dis Esophagus ; 26(8): 859-63, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-22947091

RESUMO

Natural compounds have generated great interest as alternative treatments of diseases like cancer. Here, we investigated the anti-tumor mechanism of one such compound, Agrocybe aegerita polysaccharide, by assessing expression of tumor necrosis factor-α (TNF-α) and interferon-γ (IFN-γ) in rat esophageal carcinoma (EC). EC was induced in healthy Wistar rats by methyl-n-amyl nitrosamine. Subsequently, rats were administered cancer treatment daily for 4 weeks, as follows: the normal control group (the only group not treated with methyl-n-amyl nitrosamine) and model group received only distilled water; the chemotherapy group received tegafur treatment; and the combination group received tegafur combined with A. aegerita polysaccharide. In normal and combination groups, body weight increased gradually after each week of treatment (P < 0.05), while body weights did not change in model and chemotherapy groups. Using enzyme linked immunosorbent assay, we found serum TNF-α was lower in the combination group (31.56 ± 7.20 pg/L) than either the model (46.24 ± 8.52 pg/L) or chemotherapy (52.39 ± 9.16 pg/L) group, and, while higher, was more similar to the normal controls (25.08 ± 2.93 pg/L; P < 0.05), a finding that was confirmed by the immunohistochemistry of esophageal samples. In contrast, serum IFN-γ was higher in the combination group (97.20 ± 10.92 pg/L) than in either the model (76.11 ± 11.92 pg/L) or chemotherapy (76.04 ± 9.85 pg/L) group, but lower than in the normal group (117.56 ± 10.88; P < 0.05), also confirmed by immunohistochemistry. Therefore, Agrocybe aegerita polysaccharide, when combined with chemotherapy, can regulate immune function in EC, potentially by modulating cytokine activity, specifically downregulation of TNF-α and upregulation of IFN-γ.


Assuntos
Agrocybe , Antimetabólitos Antineoplásicos/farmacologia , Peso Corporal/efeitos dos fármacos , Carcinoma/imunologia , Neoplasias Esofágicas/imunologia , Polissacarídeos Fúngicos/farmacologia , Interferon gama/efeitos dos fármacos , Tegafur/farmacologia , Fator de Necrose Tumoral alfa/efeitos dos fármacos , Animais , Antimetabólitos Antineoplásicos/uso terapêutico , Carcinoma/tratamento farmacológico , Quimioterapia Combinada , Neoplasias Esofágicas/tratamento farmacológico , Feminino , Polissacarídeos Fúngicos/uso terapêutico , Interferon gama/imunologia , Masculino , Ratos , Ratos Wistar , Tegafur/uso terapêutico , Fator de Necrose Tumoral alfa/imunologia
13.
An Acad Bras Cienc ; 85(4): 1473-81, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-24346799

RESUMO

In this study, the hypolipidemic effect of exopolysaccharides (EPS) from Pleurotus geesteranus 5# fermenting liquor by the optimal culture conditions in a 5-L stirred-tank reactor was investigated. The hypolipidemic effect of the polysaccharide, investigated in streptozotocin induced diabetic mice, decreased plasma glucose, total cholesterol and triacylglycerol concentrations by 17.1 %, 18.8 % and 12.0 %, respectively. The results of the present investigation strongly demonstrate the potential of this polysaccharide to prevent hyperglycemia in the experimental animals. Under optimal culture conditions, the maximum concentrations of mycelial and EPS were 22.63 g/L after 7 d cultivation and 11.09 g/L after 10 d, respectively. Furthermore, the morphological parameters (i.e. mean diameter, circularity, roughness and compactness) of the pellets and the broth viscosity were characterized. It was proved that compactness of the pellet morphology (R²=0.963, p<0.01) was significantly and positively determined with mycelial biomass. Moreover, mean diameter (R²=93.3, p<0.01) and broth viscosity (R²=0.950, p<0.01) were significantly and positively determined with EPS content.


Assuntos
Diabetes Mellitus Experimental/tratamento farmacológico , Polissacarídeos Fúngicos/uso terapêutico , Hipolipemiantes/farmacologia , Pleurotus/metabolismo , Animais , Reatores Biológicos , Colesterol/sangue , Diabetes Mellitus Experimental/sangue , Avaliação Pré-Clínica de Medicamentos/métodos , Fermentação , Polissacarídeos Fúngicos/biossíntese , Glucose/análise , Camundongos , Pleurotus/química , Triglicerídeos/sangue , Viscosidade
14.
Int J Mol Sci ; 13(7): 8142-8158, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-22942695

RESUMO

Water-insoluble glucan was isolated from the baker's yeast Saccharomyces cerevisiae. The yeast cells were treated with alkali and the residue then with acid. Chemical and NMR (1D and 2D) analyses showed that a linear (1→3)-ß-glucan was purified that was not contaminated with other carbohydrates, proteins or phenolic compounds. The effects of the glucan on wound healing were assessed in human venous ulcers by histopathological analysis after 30 days of topical treatment. (1→3)-ß-glucan enhanced ulcer healing and increased epithelial hyperplasia, as well as increased inflammatory cells, angiogenesis and fibroblast proliferation. In one patient who had an ulcer that would not heal for over 15 years, glucan treatment caused a 67.8% decrease in the area of the ulcer. This is the first study to investigate the effects of (1→3)-ß-glucan on venous ulcer healing in humans; our findings suggest that this glucan is a potential natural biological response modifier in wound healing.


Assuntos
Polissacarídeos Fúngicos/uso terapêutico , Glucanos/uso terapêutico , Úlcera Varicosa/tratamento farmacológico , Adulto , Idoso , Feminino , Polissacarídeos Fúngicos/isolamento & purificação , Polissacarídeos Fúngicos/farmacologia , Glucanos/isolamento & purificação , Glucanos/farmacologia , Humanos , Masculino , Pessoa de Meia-Idade , Saccharomyces cerevisiae/química , Cicatrização/efeitos dos fármacos
15.
Pharm Biol ; 50(9): 1103-10, 2012 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-22830391

RESUMO

CONTEXT: The genus Cordyceps (Clavicipitaceae) is a group of entomopathogenic fungi that is widely used as tonic food or invigorant with broad-spectrum medicinal properties in China. Cordyceps gunnii (Berk.)Berk (C. gunnii), is also well known as the Chinese rare caterpillar fungus and has similar pharmacological activities with Cordyceps sinensis (C. sinensis). Polysaccharides (PS) from various Cordyceps species have demonstrated many interesting biological activities, including antitumor, immunopotentiation, hypoglycemic, and hypocholesterolemic activities. OBJECTIVE: To investigate the effect of C. gunnii PS on the immunostimulatory antitumor function and expression of immune related cytokines in normal, immuno-suppressive, and H22-bearing mice, respectively. METHODS: C. gunnii PS were extracted with hot water at 80°C for 2 h. Normal, immuno-suppressive, and H22-bearing mice were treated with PS respectively. By detecting the value of macrophage phagocytic index, proliferation of lymphocytes, natural killer (NK) cell activity and expression of related cytokines, interleukin (IL-4), tumor necrosis factor-α (TNF-a) and interferon-γ (IFN-γ), and tumor inhibition index in H22-bearing mice additionally, the effect of PS on immunostimulatory antitumor function and its mechanism were studied. RESULTS: The total sugar content of the PS was determined to be 95% after purification. PS markedly increased the thymus and spleen indexes, the macrophage phagocytosis, the proliferation of splenic cells, and the level of IFN-γ and TNF-α. In tumor growth inhibition test, PS showed remarkable inhibition effects. CONCLUSION: PS from the C. gunnii could enhance nonspecific immunological function, humoral immunity, cellular immunity in mice, and inhibit tumor growth.


Assuntos
Cordyceps/metabolismo , Citotoxicidade Imunológica/efeitos dos fármacos , Polissacarídeos Fúngicos/farmacologia , Imunidade Celular/efeitos dos fármacos , Imunidade Humoral/efeitos dos fármacos , Fatores Imunológicos/farmacologia , Sarcoma/tratamento farmacológico , Animais , China , Cordyceps/crescimento & desenvolvimento , Citocinas/metabolismo , Polissacarídeos Fúngicos/química , Polissacarídeos Fúngicos/isolamento & purificação , Polissacarídeos Fúngicos/uso terapêutico , Hospedeiro Imunocomprometido/efeitos dos fármacos , Fatores Imunológicos/química , Fatores Imunológicos/isolamento & purificação , Fatores Imunológicos/uso terapêutico , Células Matadoras Naturais/efeitos dos fármacos , Células Matadoras Naturais/imunologia , Células Matadoras Naturais/metabolismo , Células Matadoras Naturais/patologia , Ativação Linfocitária/efeitos dos fármacos , Ativação de Macrófagos/efeitos dos fármacos , Camundongos , Camundongos Endogâmicos BALB C , Micologia/métodos , Transplante de Neoplasias , Farmacognosia , Distribuição Aleatória , Sarcoma/imunologia , Sarcoma/metabolismo , Sarcoma/patologia , Baço/efeitos dos fármacos , Baço/imunologia , Baço/metabolismo , Baço/patologia , Timo/efeitos dos fármacos , Timo/imunologia , Timo/metabolismo , Timo/patologia
16.
Int J Immunopathol Pharmacol ; 35: 20587384211000541, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33858263

RESUMO

Tremella polysaccharide is known to be structurally unique and biologically active natural products, abundant and versatile in activities and applications in food industry, daily chemical industry and medicine industry. In order to improve the industrialisation of Tremella polysaccharide, the limitations of preparation and structure-activity relationship of Tremella polysaccharide were reviewed in this paper. The research progress of Tremella polysaccharide in the past 20 years was summarized from the sources, preparation methods, molecular structure, activity and application, and the research trend in the future was also prospected. The application prospect of Tremella polysaccharide in against multiple sub-health states was worth expecting.


Assuntos
Basidiomycota , Polissacarídeos Fúngicos , Animais , Polissacarídeos Fúngicos/biossíntese , Polissacarídeos Fúngicos/química , Polissacarídeos Fúngicos/farmacologia , Polissacarídeos Fúngicos/uso terapêutico , Humanos
17.
Appl Biochem Biotechnol ; 193(12): 4197-4213, 2021 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-34524632

RESUMO

Morchella esculenta (M. esculenta) is a delicious edible mushroom prized for its special flavor and strong health promoting abilities. Several bioactive ingredients including polysaccharides, polyphenolic compounds, proteins, and protein hydrolysates all contribute to the biological activities of M. esculenta. Different polysaccharides could be extracted and purified depending on the extraction methods and M. esculenta studied. Monosaccharide composition of M. esculenta polysaccharides (MEP) generally includes mannose, galactose, and glucose, etc. MEP possess multiple bioactivities such as antioxidant, anti-inflammation, immunoregulation, hypoglycemic activity, atherosclerosis prevention and antitumor ability. Other components like polyphenols, protein hydrolysates, and several crude extracts are also reported with strong bioactivities. In terms of potential applications of M. esculenta and its metabolites as nutritional supplements and drug supplements, this review aims to comprehensively summarize the structural characteristics, biological activities, research progress, and research trends of the active ingredients produced by M. esculenta. Among the various biological activities, the substances extracted from both natural collected and submerged fermented M. esculenta are promising for antioxidants, immunomodulation, anti-cancer and anti-inflammatory applications. However, further researches on the extraction conditions and chemical structure of bioactive compounds produced by M. esculenta still need investigations.


Assuntos
Antioxidantes , Ascomicetos/química , Polissacarídeos Fúngicos , Proteínas Fúngicas , Hidrolisados de Proteína , Antioxidantes/química , Antioxidantes/uso terapêutico , Polissacarídeos Fúngicos/química , Polissacarídeos Fúngicos/uso terapêutico , Proteínas Fúngicas/química , Proteínas Fúngicas/uso terapêutico , Humanos , Hidrolisados de Proteína/química , Hidrolisados de Proteína/uso terapêutico
18.
Clin Transl Oncol ; 23(2): 197-204, 2021 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-32557335

RESUMO

In modern medicine, natural products have aided humans against their battles with cancer. Among these products, microorganisms, medicinal herbs and marine organisms are considered to be of great benefit. In recent decades, more than 30 fungal immunity proteins have been identified and proved to be extractable from a wide range of fungi, including mushrooms. Although chemotherapy is used to overcome cancer cells, the side effects of this method are of great concern in clinical practice. Fungal products and their derivatives constitute more than 50% of the clinical drugs currently being used globally. Approximately 60% of the clinically approved drugs for cancer treatment have natural roots. Anti-tumor immunotherapy is prospective with a rapidly growing market worldwide due to its high efficiency, immunity, and profit. Polysaccharide extracts from natural sources are being used in clinical and therapeutic trials on cancer patients. This review aims to present the latest findings in cancer treatment through isolated and extraction of fungal derivatives and other natural biomaterials.


Assuntos
Antineoplásicos/uso terapêutico , Produtos Biológicos/uso terapêutico , Fungos/química , Neoplasias/tratamento farmacológico , Agaricales/química , Anti-Inflamatórios/uso terapêutico , Basidiomycota/química , Polissacarídeos Fúngicos/uso terapêutico , Proteínas Fúngicas/uso terapêutico , Fungos/metabolismo , Humanos , Nanopartículas/uso terapêutico , Neoplasias/imunologia
19.
Carbohydr Polym ; 268: 118239, 2021 Sep 15.
Artigo em Inglês | MEDLINE | ID: mdl-34127221

RESUMO

Composite dressing composed of Rhizochitosan and Regenplex™ to promote wound healing were assessed. Rhizochitosan was fabricated by deacetylation of Rhizochitin, which obtained by simply depigmenting sporangium-free mycelial mattress produced from Rhizopus stolonifer F6. Physicochemical characterizations of Rhizochitosan demonstrated that it contained 13.5% chitosan with a water-absorption ability of 35-fold dry weight and exhibiting hydrogel nature after hydration. In a wound-healing study on SD rats with full-thickness injury, the composite dressing had a better healing effect than those for each individual components and control group and wound even healed as functional tissue instead of scar tissue. The underlying mechanism of the composite beneficial to wound remodeling is likely attributable to a more reduction level of matrix metalloproteinase (MMP)-9 expression in early stage and a higher MMP-2 expression level in a later stage of healing process. Conclusively, the composite dressing demonstrated to be highly beneficial to the healing of full-thickness injury wound.


Assuntos
Plaquetas/efeitos dos fármacos , Quitosana/uso terapêutico , Polissacarídeos Fúngicos/uso terapêutico , Cicatrização/efeitos dos fármacos , Animais , Bandagens , Bovinos , Quitosana/química , Quitosana/isolamento & purificação , Polissacarídeos Fúngicos/química , Polissacarídeos Fúngicos/isolamento & purificação , Masculino , Ratos Sprague-Dawley , Rhizopus/química , Pele/efeitos dos fármacos , Pele/lesões
20.
Carbohydr Polym ; 273: 118558, 2021 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-34560969

RESUMO

The plasticity of the gut microbiota (GM) creates an opportunity to reshape the biological output of gut microbes by manipulating external factors. It is well known that edible fungal polysaccharides (EFPs) can reach the distal intestine and be assimilated to reshape the GM. The GM has unique devices that utilize various EFPs and produce oligosaccharides, which can selectively promote the growth of beneficial bacteria and are fermented into short-chain fatty acids that interact closely with intestinal cells. Here we review EFPs-based interventions for the GM, particularly the key microorganisms, functions, and metabolites. In addition, we discuss the bi-directional causality between GM imbalance and diseases, and the beneficial effects of EFPs on host health via GM. This review can offer a valuable reference for the design of edible fungal polysaccharide- or oligosaccharide-based nutrition interventions or drug development for maintaining human health by targeted regulation of the GM.


Assuntos
Polissacarídeos Fúngicos/uso terapêutico , Microbioma Gastrointestinal/efeitos dos fármacos , Animais , Bactérias/efeitos dos fármacos , Ácidos Graxos Voláteis/metabolismo , Polissacarídeos Fúngicos/metabolismo , Microbioma Gastrointestinal/fisiologia , Humanos , Prebióticos
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