0 Glyconutrients

Background Glucosamine hydrochloride, a natural biopolymer present in the daily diet, has various biological activities including antitumour properties and protective effects against pathogens. Early studies showed that daily administration of a derivative of glucosamine induced proliferation of leukemia cells and prolonged overall survival in mice; importantly, no toxicity was associated with the glucosamine treatment. However, the potential mechanism of the antitumour effect is unknown. This study aimed to investigate the inhibitory mechanism and effect of glucosamine on human gastric carcinoma cells in vitro. Methods Gastric carcinoma MKN-45 cells were exposed to 0, 100, 500 and 1000 µg/mL glucosamine hydrochloride for 72 hours, and then the viability and proliferation of gastric carcinoma cells in vitro was measured using the MTT (3-(4.5-dimethylthiazol-2-yl)-2.5-diphenyltetrazolium bromide) assay. Quantitative gene expression of MMP-2 and -3 was determined by real-time polymerase chain reaction. Protein level was analyzed using an enzyme-linked immunosorbent assay (ELISA). Results Glucosamine hydrochloride has a significant inhibitory antitumour effect on MKN-45 cells in vitro. The cell viability of MKN-45 cells treated with different concentrations of glucosamine hydrochloride rose continuously from 24 to 72 hours compared with the untreated control. MKN-45 cells were inhibited by 54% by 500 µg/mL glucosamine hydrochloride and by 85% by 1000 µg/mL glucosamine hydrochloride. Administration of 500 µg/mL glucosamine hydrochloride resulted in a significant decrease in MMP-2 and MMP-3 expression of about 79% and 70%, respectively, in MKN-45 cells. Conclusions In this study, we showed that the antitumour activity of glucosamine hydrochloride significantly suppresses MKN-45 cells in vitro. This effect was shown by inhibitory gene expression of MMP-2 and -3. Acknowledgments This research was financially supported by Zhuhai College of Jilin University.

Osteoarthritis is a chronic degenerative joint disease causing pain and disability. Glucosamine sulphate is a well known oral supplement for its treatment. The present pioneering study provides an overview of the accentuated transdermal delivery of glucosamine sulphate through the optimized gel formulation w

Cancer stem cells (CSCs) are a subpopulation of cancer cells responsible for tumor maintenance and relapse due to their ability to resist various anticancer effects. Owing to the resistance of CSCs to the effects of targeted therapy, an alternative strategy that targets post‑translational glycosylation may be an improved approach to treat cancer as it disrupts multiple coordinated signaling that maintains the stemness of CSCs. Glucosamine acts as an anticancer agent possibly by inhibiting N‑linked glycosylation. The aim of the present study was to investigate the effect of glucosamine on the stemness of breast CSCs, which is regulated by signal transducer and activator of transcription 3 (STAT3) signaling. Human aldehyde dehydrogenase‑positive (ALDH+) breast CSCs and MCF7 cells were treated with various concentrations (0.25, 1 or 4 mM) of glucosamine for 24 h. Subsequently, cell viability was determined by performing a trypan blue exclusion assay, pluripotency gene [ALDH 1 family member A1 (ALDH1A1), octamer‑binding transcription factor 4 (OCT‑4), and Krüppel‑like factor 4 (KLF4)] expression was determined using the reverse transcription‑quantitative polymerase chain reaction, and STAT3 and phosphorylated STAT3 (pSTAT3) levels were determined by performing western blot analysis. Furthermore, the number of mammosphere‑forming units (MFUs) in ALDH+ breast CSCs and MCF7 cells was determined. It was determined that glucosamine treatment decreased the viability of ALDH+ breast CSCs. Glucosamine treatment also decreased the stemness of ALDH+ breast CSCs and MCF7 cells, as indicated by decreased ALDH1A1, OCT‑4 and KLF4 expression level, and a decreased number of MFUs. This effect of glucosamine may be associated with a decreased pSTAT3/STAT3 ratio, indicating that glucosamine inhibited STAT3 activation; therefore, the results of the present study indicated that glucosamine treatment may be an improved approach to target the stemness of CSCs.

Diabetic nephropathy (DN) is the most common cause of end-stage renal disease (ESRD). Currently, approximately 20–40% of individuals with diabetes are…

Background Renal cell carcinoma (RCC) is one of the most common types of cancer in urological system worldwide. Recently, the anticancer role of Glucosamine has been studied in many types of cancer. The aim of this study was to investigate the effects of Glucosamine on RCC. Methods The effects of Glucosamine on RCC cell proliferation and apoptosis were investigated by MTT assay and Annexin V-FITC Apoptosis assay, respectively in vitro. Cell cycle was detected by flow cytometry after treatment with Glucosamine. Protein levels of several cell cycle associated markers were examined by Western Blot. Results Our data showed that Glucosamine significantly inhibited the proliferation of renal cancer 786-O and Caki-1 cells in a dose-dependent manner. Besides, Glucosamine treatment resulted in cell cycle arrest at G0/G1 phase in both cell lines. Meanwhile, the expression of several regulators that contribute to G1/S phased transition, such as Cyclin D1, CDK4 and CDK6, were significantly down-regulated with the up-regulation of cell cycle inhibitors, p21 and p53, after treatment with glucosamine. However, the apoptosis rate of RCC cells was down-regulated when treatment with Glucosamine at 1 mM and 5 mM, while up-regulated at 10 mM. Conclusions Our findings indicated that Glucosamine inhibited the proliferation of RCC cells by promoting cell cycle arrest at G0/G1 phase, but not promoting apoptosis. The present results suggested that Glucosamine might be a potential therapeutic agent in RCC treatment in the future.

Scar preventive dextran based bionanocomposite dressings containing aloe vera (AV) and manuka honey (MH) were developed as wound care devices. This wo…

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A. vera may provide a safe and effective treatment for reducing the symptoms of GERD.

Low molecular weight fucoidan (LMWF), extracted from Laminaria japonica Areschoug, is a traditional Chinese medicine, commonly used to alleviate edema…

Objectives To evaluate the associations of regular glucosamine use with all-cause and cause-specific mortality in a large prospective cohort. Methods This population-based prospective cohort study included 495 077 women and men (mean (SD) age, 56.6 (8.1) years) from the UK Biobank study. Participants were recruited from 2006 to 2010 and were followed up through 2018. We evaluated all-cause mortality and mortality due to cardiovascular disease (CVD), cancer, respiratory and digestive disease. HRs and 95% CIs for all-cause and cause-specific mortality were calculated using Cox proportional hazards models with adjustment for potential confounding variables. Results At baseline, 19.1% of the participants reported regular use of glucosamine supplements. During a median follow-up of 8.9 years (IQR 8.3–9.7 years), 19 882 all-cause deaths were recorded, including 3802 CVD deaths, 8090 cancer deaths, 3380 respiratory disease deaths and 1061 digestive disease deaths. In multivariable adjusted analyses, the HRs associated with glucosamine use were 0.85 (95% CI 0.82 to 0.89) for all-cause mortality, 0.82 (95% CI 0.74 to 0.90) for CVD mortality, 0.94 (95% CI 0.88 to 0.99) for cancer mortality, 0.73 (95% CI 0.66 to 0.81) for respiratory mortality and 0.74 (95% CI 0.62 to 0.90) for digestive mortality. The inverse associations of glucosamine use with all-cause mortality seemed to be somewhat stronger among current than non-current smokers (p for interaction=0.00080). Conclusions Regular glucosamine supplementation was associated with lower mortality due to all causes, cancer, CVD, respiratory and digestive diseases.

Abstract Biogenic synthesis of silver nanoparticles (AgNP) was performed at room temperature using Aloe vera plant extract in the presence of ammoniacal silver nitrate as a metal salt precursor. The formation of AgNP was monitored by UV-visible spectroscopy at different time intervals. The shape and size of the synthesized particle were visualized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM) observations. These results were confirmed by X-ray powder diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) analyses and further supported by surface-enhanced Raman spectroscopy/Raman scattering (SERS) study. UV-visible spectrum has shown a sharp peak at 420 nm and further evidenced by FTIR peak profile (at 1587.6, 1386.4, and 1076 cm−1 with corresponding compounds). The main band position with SERS was noticed at 1594 cm−1 (C–C stretching vibration). When samples were heated under microwave radiation, AgNP with octahedron shapes with 5–50 nm were found and this method can be one of the easier ways to synthesis anisotropic AgNP, in which the plant extract plays a vital role to regulate the size and shape of the nanoparticles. Enhanced antibacterial effects (two- to fourfold) were observed in the case of Aloe vera plant protected AgNP than the routinely synthesized antibiotic drugs. Graphical Abstract Shape and size-controlled synthesis of silver nanoparticles using Aloe vera plant extract

Cardiovascular diseases (CVD) are the first cause of death in Mexican population. Metabolic disruptions induced by diet are, in turn, associated with ..

Low molecular weight fucoidan (LMWF) was prepared from Laminaria japonica Areschoug, a popular seafood and medicinal plant consumed in Asia. Chinese h…

Topical Plantavera gel seems to be an effective, cheap and safe treatment. Of course, further studies are required to confirm the properties of the wound healing of this gel.

Diabetic nephropathy (DN) is a type of serious microangiopathy that is caused by diabetes mellitus (DM). It is the most common cause of chronic renal failure and end-stage renal disease, and it severely affects patients’ quality of life. This work aims to study the effect and mechanism of low molecular weight fucoidan (LMWF) on streptozotocin (STZ)-induced DN. The experimental results showed that LMWF prevented weight loss in DN rats, significantly reduced the levels of biochemical indexes in blood and urine samples, and also lowered hyaluronic acid (HA) levels and advanced glycosylation end product-specific receptor (AGER) levels in DN rats. LMWF maintained the structural integrity of glomerular basement membrane (GBM) and glomerulus, improved the glomerular filtration function, protected glycosaminoglycan from abnormal degrading, prevented advanced glycosylation end product (AGE) from being generated and accumulating, and also alleviated inflammatory response in DN rats. LMWF could obviously ameliorate and slow the development and progression of DN in rats.

The aim of the stuy was to observe and analyze the effect of glucosamine hydrochloride tablets on patients with cervical spondylosis. This study was conducted on 130 patients diagnosed with cervical spondylosis who were treated in our hospital. The time period was from June 2015 to December 2017. Th …

Background: Glucosamine, chondroitinsulfate are frequently used to prevent further joint degeneration in osteoarthritis (OA). Methylsulfonylmethane (MSM) is a supplement containing organic sulphur and also reported to slow anatomical joint progressivity in the knee OA. The MSM is often combined with glucosamine and chondroitin sulfate. However, there are controversies whether glucosamine-chondroitin sulfate or their combination with methylsulfonylmethane could effectively reduce pain in OA. This study is aimed to compare clinical outcome of glucosamine-chondroitin sulfate (GC), glucosamine-chondroitin sulfate-methylsulfonylmethane (GCM), and placeboin patients with knee osteoarthritis (OA) Kellgren-Lawrence grade I-II. Methods: a double blind, randomized controlled clinical trial was conducted on 147 patients with knee OA Kellgren-Lawrence grade I-II. Patients were allocated by permuted block randomization into three groups: GC (n=49), GCM (n=50), or placebo (n=48) groups. GC group received 1500 mg of glucosamine + 1200 mg of chondroitin sulfate + 500 mg of saccharumlactis; GCM group received 1500 mg of glucosamine + 1200 mg of chondroitin sulfate + 500 mg of MSM; while placebo group received three matching capsules of saccharumlactis. The drugs were administered once daily for 3 consecutive months VAS and WOMAC scores were measured before treatment, then at 4th, 8th and 12th week after treatment. Results: on statistical analysis it was found that at the 12th week, there are significant difference between three treatment groups on the WOMAC score (p=0.03) and on the VAS score (p=0.004). When analyzed between weeks, GCM treatment group was found statistically significant on WOMAC score (p=0.01) and VAS score (p

Europe PMC is an archive of life sciences journal literature.

We investigated the renal protective effects of low molecular weight fucoidan (LMWF) and its two fractions (F0.5 and F1.0), which were extracted from …

Europe PMC is an archive of life sciences journal literature.

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Source: Enjoy the Benefits of Aloe Vera Juice by Dr. Edward Group Most people are aware that aloe vera soothes dry skin, sunburn, and other skin irritations [1], but not many know of the many healt…

Diabetic nephropathy (DN) is a serious microvascular complication that can lead to chronic and end-stage renal failure. It is understood that inflamma…

Albuminuria is a causative and aggravating factor for progressive renal damage in chronic kidney disease (CKD). The aim of this study was to determine if low molecular weight fucoidan (LMWF) could protect renal function and tubular cells from albumin overload caused injury. Treatment with 10 mg/g bovine serum albumin caused renal dysfunction, morphological changes, and overexpression of inflammation and fibrosis associated proteins in 129S2/Sv mice. LMWF (100 mg/kg) protected against kidney injury and renal dysfunction with decreased blood creatinine by 34% and urea nitrogen by 25%, increased creatinine clearance by 48%, and decreased significantly urinary albumin concentration. In vitro proximal tubule epithelial cell (NRK-52E) model showed that LMWF dose-dependently inhibited overexpression of proinflammatory and profibrotic factors, oxidative stress and apoptosis caused by albumin overload. These experimental results indicate that LMWF protects against albumin overload caused renal injury by inhibiting inflammation, fibrosis, oxidative stress and apoptosis, which suggests that LMWF could be a promising candidate drug for preventing CKD.