Flaxseed Extract Research Articles

Using a natural salivary substitute to improve the swallowability of semi-solid foods: An in vitro and in vivo study

Flaxseed extracts are solutions and suspensions of polysaccharides with extensional and shear rheological properties close to those of saliva, making them promising candidates as natural salivary substitutes (NSS) to manage xerostomia. Both in vitro and in vivo approaches were considered to investigate the lubricating performance of such NSSs during swallowing of Greek yogurt and apple puree. The choice of these two semi-solid foods made it possible to compare colloidal systems with contrasting properties of composition, structure and rheology. The oral phase of swallowing was simulated in vitro with an innovative soft robotic model while sensory evaluations were performed with a healthy cohort (n = 16) to assess the potential of the NSSs for reducing the amounts of post swallowing food residues into the mouth. Flaxseed extract with 0.40 % dry matter showed promising performance, with low amounts of oral residues reported both in vitro and in vivo, and with a bolus that was not prone to undesired fragmentation. The original approach presented in this research offers perspectives to prescreen other salivary substitutes or food textures, in order to help addressing the needs of growing populations affected by swallowing disorders, and in particular those caused by xerostomia. The development of natural saliva substitutes should make it possible to recover a state of oral lubrication which ensures oral comfort, safe swallowing, and which limits the problems of malnutrition resulting from dysphagia.

Characterizations of ZnO Nanoparticles Green Synthesized using Flaxseeds Extract for Biomedical Applications

ZnO-NPs were synthesized chemically and using the green synthesis technique by flaxseeds (Linum usitatissimum L.), which uses water to extract flaxseeds in a biologically convenient, secure and affordable manner, under different conditions of shape of flaxseed, grinded and full seeds, different concentrations of the precursor, zinc nitrate hexahydrate, (7.43, 14.87 and 22.31 g) each per 50 mL of distilled water to obtain (0.5, 1 and 1.5 mol/L) concentrations and different pH 8, 10, 12 and 13 and studying its characterizations using X-Ray diffraction (XRD) and field emission scanning electron microscopy (FESEM) to obtain the best ZnO-NPs size and morphological properties for biomedical uses. HIGHLIGHTS Green synthesized ZnO-NPs using flaxseed extract Whole seed flaxseed extract synthesizes ZnO-NPs with smaller size and spherical shape Higher zinc nitrate concentration increases ZnO-NPs size under pH 8 - 10 GRAPHICAL ABSTRACT

On the rheological and sensory properties of a novel natural salivary substitute

The prevalence of xerostomia, the sensation of dry mouth, is estimated at 20 % in the general population and up to 50 % in older adults. Saliva plays different roles during bolus formation: lubrication, mixing, coating, hydration, dissolution, and comminution of food particles. This study proposes and tests artificial saliva formulations mimicking human saliva rheological and sensory perceptions. Shear and extensional rheology were assessed to select the type of formulation closest to saliva rheological characteristics. After evaluating three alternative sources, an extract simulating saliva rheology was produced from flax seeds. Friction coefficient and rheological properties, such as flow curves, relaxation times, and Trouton ratios, were compared favorably with human saliva. The sensory evaluation demonstrated that flaxseed extracts induce perceived mouth hydration, slipperiness, and adhesion exceeding that of human saliva. The flaxseed extract proposed in this can i) be used to study in vitro food oral processing and ii) pave the way to novel natural salivary substitutes to alleviate the symptoms of xerostomia.

Linum usitatissimum Delivery over Chitosan Nanobiopolymer: Enhanced Effects on Polycystic Ovary Syndrome Condition.

Herein, chitosan nanoparticle (CHIT) was used as a safe and biocompatible matrix to carry flaxseed (Linum usitatissimum L.) extract (FSE). The number of main features and bio-interface properties of CHIT-FSE were determined by SEM, DLS, FTIR, XRD, TGA, and zeta potential analyses and compared to those of chitosan lacking FSE. A GC-MS analysis was also conducted to reveal the bioactive compounds of FSE. The active anchoring of the FSE phytomolecules over chitosan nanoparticles with enhanced thermal and structural stability was correspondingly verified. Subsequently, the influence of CHIT-FSE, CHIT-TPP, and FSE supplementation was assessed on hormonal and biochemical markers of polycystic ovary syndrome (PCOS) in female rats and compared with untreated and healthy control groups. After 16 days of treatment, CHIT-FSE represented the best performance for controlling the serum levels of the studied biochemical (lipid profile and blood glucose level) and hormonal (insulin, testosterone, luteinizing, and follicle-stimulating hormone) parameters. Considering the negligible therapeutic activity of CHIT-TPP, the enhanced activity of CHIT-FSE compared to only FSE was expounded based on the potent action of chitosan nanoparticles in enhanced stabilization, bioavailability, transport, and permeability of the therapeutically important phytomolecules. As per the results of this investigation, supporting medically important biomolecules over chitosan can enhance their therapeutic effectiveness in controlling PCOS.

Yolk Fatty Acid Content, Lipid Health Indices, and Oxidative Stability in Eggs of Slow-Growing Sasso Chickens Fed on Flaxseed Supplemented with Plant Polyphenol Extracts.

Previous attempts to increase the level of flaxseed in hens' diet for the production of n-3 polyunsaturated fatty acids (n-3 PUFAs)-enriched eggs have been commonly associated with undesirable effects on production efficiency, lipid health indices, and oxidative stability of eggs, requiring adequate research attention. This study investigated the effects of feeding a moderate level of flaxseed (FS) and plant polyphenol extracts (PPEs) on fatty acid content, oxidative stability, and lipid health indices in eggs of slow-growing Sasso T451A laying hens. One hundred and five hens were assigned to five groups (seven replicates of three) and fed on FS (75 g flaxseed and no antioxidants), VE8 (75 g flaxseed and 800 mg vitamin E), TS8 (75 g flaxseed and 800 mg Thymus schimperi), DA8 (75 g flaxseed and 800 mg Dodonaea angustifolia), and CD8 (75 g flaxseed and 800 mg Curcuma domestica) extract per kg diets. The egg yolk content of eicosapentaenoic acid (EPA, C20:5 n-3) in the DA8, TS8, and CD8 diets and docosahexaenoic acid (DHA, C22:6 n-3) in TS8 and CD8 diets significantly (p < 0.05) increased compared with the FS diet. The FS diet significantly increased the malondialdehyde (MDA) content in egg yolks, whereas the TS8 diet decreased it by 67% (p < 0.05). Little difference was observed in yolk fatty acid content between cooked and raw eggs. Production of n-3 PUFA-enriched eggs with favorable lipid health indices was possible through inclusion of PPEs extracted from local plant species grown in Ethiopia and a moderate dose of flaxseed in the diet of laying hens.

Wound healing promotion by flaxseed extract-loaded polyvinyl alcohol/chitosan nanofibrous scaffolds

Impaired wound healing is a severe complication of sufferers, related to prolonged wound closure, a high infection rate, and eventually disabilities of organs. To aid resolve this issue, we developed the electrospun polyvinyl alcohol and chitosan (PVA/CS) nanofibrous scaffold-loaded flaxseed extract. The scaffold containing 10 wt% of the extract indicated a three-dimensional cross-network with a nano-scale diameter (257 ± 37 nm) and smooth surface. Also, the relevant analyses confirmed high water absorption, porosity, and wettability of the scaffold. Fourier-transform infrared (FTIR), degradation, and mechanical studies revealed the intact presence and loading of the extract into the scaffold, the complete degradation over 48 h, and a high tensile elastic modulus. Besides, the advanced scaffold displayed remarkable anti-oxidant and could inhibit the growth of both Gram-positive and negative bacteria compared to the free PVA/CS scaffold. Desired fibroblast viability and blood compatibility of flaxseed-loaded scaffold endorsed the biocompatibility for wound zones. The in vitro studies showed that the flaxseed-loaded scaffold resulted in an accelerated wound healing process and 100 % closure of the scratched area within 48 h. The results obtained reveal that the flaxseed-loaded PVA/CS electrospun scaffold could be effectively applied for wound healing promotion.

Development of Phytocosmeceutical Microemulgel Containing Flaxseed Extract and Its In Vitro and In Vivo Characterization.

Antioxidants from natural sources are extensively attaining consideration to avert the skin from damage and aging caused by free radicals. Flaxseed (Linum usitatissimum L.), a natural therapeutic agent, was meant to be explored cosmeceutical by quantifying its potential phytoconstituents and to be incorporated into a microemulgel for topical use. Hydroalcoholic fractions (both methanolic and ethanolic; 80%) flaxseed extracts were subjected to phytochemical screening by quantifying total phenolic content (TPC), total flavonoid content (TFC), and high-performance liquid chromatography-ultraviolet (HPLC-UV), and for biological activities through 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay, tyrosinase inhibition assay, and sun protection factor (SPF). Ethanolic fraction was selected for further study by TPC (18.75 mg gallic acid equivalent/g) and TFC (1.34 mg quercetin equivalent/g). HPLC-UV analysis showed the existence of benzoic, quercetin, caffeic, vanillic, p-coumaric, gallic, cinnamic, syringic, and sinapic acids. Biological activities showed 87.00%, 72.00%, and 21.75 values for DPPH assay, tyrosinase inhibition, and SPF assays, respectively. An oil-in-water (OW) microemulsion containing the flaxseed extract, with 99.20 nm Zeta size, −19.3 Zeta potential and 0.434 polydispersity index was developed and incorporated in Carbopol-940 gel matrix to formulate an active microemulgel with 59.15% release in in vitro studies. The successfully formulated stable active microemulgel produced statistically significant effects (p < 0.05), in comparison to a placebo, on skin erythema, melanin, sebum, moisture, and elasticity, in a noninvasive in vivo study performed on 13 healthy human female volunteers. Other cosmeceutical products can also be formulated from flaxseed, making it a considerable candidate for further utilization in the pharmaceutical industry.

Comparison of flax seeds extract and fenugreek seed extract rinse against streptococcus mutans colonies

Objective: To compare flax seeds extract and fenugreek seed extractrinse against streptococcus mutans colonies Study setting: The bench work of this preclinical experimental study was carried out at Baqai Medical and Dental College Karachi., from December 2021 to January 2022. Materials and Methods: It was a preclinical experimental study. Participants were divided into 4 groups randomization was performed in allocating the groups of participants. Film of plaque from labial surface of teeth of study participants was collected on sterile strips before and after the 2 hours of intervention. The extract preparation of both the plants and culture of S. mutantcolonies were performed as per standard protocol. The extract was diluted at 1:4 for rinsing and study participants were given the rinses according to their groups. Data was analyzed by SPSS v. 22 Results: The growth of colonies was calculated on growth media plates in samples prior to rinsing and samples that were taken after the rinsing. The pre and post samples showed significant (p-value &lt;0.05) decrease in number of colonies in positive control group (conventional rinse), flax seed extract group and fenugreek seed extract group as shown in table 1. The intra group comparison of negative and positive control showed significant difference in number of colonies and same was observed with the both the extract rinses. However, the positive control and flax seed extract and fenugreek seed extract comparison was insignificant that highlighted the equal potential of herbal extracts in reducing the streptococcus mutans colonies. Conclusion: Flax seeds extract and fenugreek seed extract mouth rinses reduced the number of colonies equally as that of commercially available mouth rinse. Keywords: Flax seed extract, Fenugreek Seed Extract, Rinse, Antibacterial, streptococcus mutans

Flaxseed Ethanol Extract Effect in Acute Experimental Inflammation.

Background and Objectives: Previous studies demonstrated antioxidant activities for flaxseed and flaxseed oil. The aim of the present study was to evaluate the prophylactic and therapeutic anti-inflammatory and antioxidant effects of flaxseed ethanol extract in acute experimental inflammation. Materials and Methods: The in vivo anti-inflammatory and antioxidant activity was evaluated on a turpentine-induced acute inflammation (6 mL/kg BW, i.m.) by measuring serum total oxidative status, total antioxidant reactivity, oxidative stress index, malondialdehyde, total thiols, total nitrites, 3-nitrotyrosine, and NFkB. The experiment was performed on nine groups (n = 5) of male rats: negative control; inflammation; three groups with seven days of flaxseed extract (100%, 50%, 25%) pretreatment followed by inflammation on day eight; three groups of inflammation followed by seven days of treatment with flaxseed extract (100%, 50%, 25%); inflammation followed by seven days of treatment with diclofenac (20 mg/kg BW). Results: Flaxseed extract anti-inflammatory activity was better in the therapeutic plan than in the prophylactic one, and consisted of NO, 3NT, and NF-κB reduction in a dose dependent way. ROS was reduced better in the therapeutic flaxseed extracts administration, and antioxidants were increased by the prophylactic flaxseed extracts administration. Both, ROS and antioxidants were influenced more by the total flaxseed extract, which was also more efficient than diclofenac. Conclusions: flaxseed extract prophylaxis has a useful antioxidant activity by increasing the antioxidants, and flaxseed extract therapy has anti-inflammatory and antioxidant activities by reducing NF-κB, RNS, and ROS.

Antibacterial Activity of Flax Seeds Extract Rinse against Streptococcus mutans Colonies

Background: Flax seeds has health-potentiating medicinal benefits due to the presence of a remarkable amount of bioactive compounds. The antibacterial activity of ethanolic extract of flax seeds against Bacillus cereus, Staphylococcus aureus, Pseudomonas aeruginosa and Klebsiella pneumoniae has been documented. Therefore, the current study current aims to investigated the antibacterial activity flax seeds extract rinse against Streptococcus mutans colonies&#x0D; Methodology: It was a preclinical experimental study and sample size was n = 60. The participants were given an envelope for group randomization. Film of plaque from labial surface of teeth of study participants was collected on sterile strips that was transported to laboratory for culture in sterile containers. For culture S. mutant samples were inoculated in Columbia Agar. The flax seeds extract was diluted in distilled water in 1:4 (Extract: Distilled water) concentration. And participants were divided into 3 groups. (negative control, positive control, flax seed extract group). Diluted flax seed extract was given to experimental group for rinses, distilled water was given to negative control group and positive controls were given a commercially available mouth rinse. Next sample of plaque was collected after two hours to observe the effects of flax seed extract on bacterial colonies.&#x0D; Results: The growth of colonies was calculated on growth media plates in samples prior to rinsing and samples that were taken after the rinsing. The pre and post samples showed significant (p-value &lt;0.05) decrease in number of colonies in positive control group (conventional rinse) and flax seed extract group.&#x0D; Conclusion: Flax seeds extract mouth rinse reduced the number of colonies equally as that of commercially available mouth rinse.

Systematic review of flaxseed (Linum usitatissimum L.) extract and formulation in wound healing

Context: Flaxseed constituents provide to antioxidant, anti-inflammatory, antimicrobial and wound healing benefits. Aims: To systematically review the experimental evidence on the wound healing ability of flaxseed extracts and formulations. Methods: Comprehensive searches in six databases (Scopus, Science Direct, Web of Science, PubMed, Google Scholar and Dimensions) were carried out from the beginning of databases until December 2020, according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) protocol. The terms used in searches were (Linum usitatissimum L., flaxseed, linseed, flax) AND (extract) AND (wound heal, heal, heal type, wound) for collection of articles, with only articles in English and research articles were included. Transgenic term were excluded. AXIS tool was chosen to assess the quality and risk of bias. The data were then categorised in term of extracts, laboratory formulation, and wound healing. Results: In total, 999 articles were collected and screened based on the pre-determined inclusion and exclusion criteria. Finally, 10 articles were included in the review. The majority of publications reported significant findings of flaxseed oil on wound healing regardless of extraction method and formulation. Healing parameters on excision, incision, and burn wound models were studied. Lack of laboratory formulation mentioned in the collected articles gave limitation impact on this study. Conclusions: Flaxseed oil formulation appears to exert a positive effect on wound healing. Therefore, extensive studies needed to evaluate the transportation of flaxseed phytochemicals into skin dermis by advanced drug formulation.

THE POSSIBLE EFFECT OF FLAXSEED EXTRACT ON LETROZOLE-INDUCED POLYCYSTIC OVARY RAT MODEL: CORRELATIVE HISTOLOGICAL AND FUNCTIONAL STUDY

Background: Polycystic Ovary Syndrome (PCOS) is one of the most common metabolic disorders affecting women in the reproductive age leading to infertility/subfertility. It may occur as a complication of Letrozole (LTZ) therapy in breast cancer patients. Objective: This was a preliminary study to assess the possible protective and/or curative effect of flaxseed extract in a letrozole-induced PCO rat model. Material and Methods: Thirty-six adult female albino rats were divided into five main groups: Group I kept as the control group, Group II (Letrozole-induced PCO group), received letrozole solution (3 mg/kg) orally once daily by gastric tube for 21 days. Group III (combined flaxseed and letrozole group), received aqueous flaxseed extract (500 mg /kg/day) orally one hour before letrozole in the same dose and duration as group II, Group IV (recovery group), received letrozole in the same dose and duration as group II and then left without treatment for the next 4 weeks after PCO induction, Group V (flaxseed-treated group), treated with aqueous flaxseed extract orally once daily for the next 4 weeks after PCO induction. At the end of the experiment, final body weight, ovarian weight, blood glucose, serum antioxidants assay, and sex hormones levels were measured. Also, specimens of ovaries were processed for light and electron microscopic studies. Histomorphometric and statistical analyses were done. Results: letrozole-induced PCO resulted in a significant increase in final body weight, ovarian weight as well as abnormal blood glucose, sex steroids hormone levels, and antioxidant assays. Moreover, numerous ovarian cystic follicles, widespread cytoplasmic vacuolation in the granulosa lutein cells, congested blood capillaries, and increased fibrosis within the ovarian medulla were evident in the PCO group in concomitant with a significant increase in area percentage of collagen fibers. The ultrastructural assessment confirmed these distortions. The protective and curative potential of flaxseed is mostly comparable revealed improvement in the final body weight, biochemical markers and histological changes, with the protective effect was more pronounced than the curative one. Conclusion and Recommendation: Flaxseed succeeded in ameliorating letrozole-induced polycystic ovary owing to its phytochemicals, antioxidant and anti-inflammatory properties with folliculogenesis potentials. So, it is recommended to use flaxseed as a co-therapy with letrozole to reduce its hyperandrogenic effects.

Characterization of green synthesized flaxseed zinc oxide nanoparticles and their cytotoxic, apoptotic and antimigratory activities on aggressive human cancer cells

This study was done of green synthesized zinc oxide nanoparticles (ZnO NPs) by using flaxseed extract (Linum usitatissimum L.) and investigated their potential anticancer effects. The ZnO NPs were characterized by UV–Vis, SEM/EDS, and XRD techniques. These analyses showed that these NPs were spherically shaped with a 23–55 nm size range. The cytotoxicity of NPs was confirmed by MTT assay against A549, HT29, and MDA-MB-231 cancer cells, indicating their antiproliferative effect (IC50 values: 68.3, 66.3, and 58.8 μg/mL, respectively). The apoptotic induction was analyzed by ELISA, and the results showed that the NPs induced apoptosis through caspase-3/9 activation but not by caspase-8. These NPs significantly trigger the intrinsic-apoptotic pathway. Moreover, they exhibited strong antimigratory properties on the lowly metastatic HT29 and the highly metastatic A549 and MDA-MB-231 cells. This is the first report of Linum usitatissimum L-mediated synthesis of ZnO NPs that could be considered as potential antineoplastic agents.

Milled flaxseed-added diets ameliorated hepatic inflammation by reducing gene expression of TLR4/NF-κB pathway and altered gut microbiota in STZ-induced type 1 diabetic mice

Flaxseed has displayed the potential beneficial as functional foods. However, most studies focused on effects of flaxseed extracts or ingredients in flaxseed. Besides, few studies showed that flaxseed extracts contributed to anti-type 1 diabetes (T1D), yet the underlying mechanism is still unknown. In the present study, 16.7% of milled flaxseed (MF)-added diet was given to diabetic mice induced by streptozocin for 6 weeks. The results showed that MF feeding 1) slightly decreased blood glucose levels and improved the ability of glucose tolerance by oral glucose tolerance test, 2) decreased liver tumor necrosis factor-α levels and increased liver glycogen levels with significance via down-regulating TLR4/NF-κB pathways, 3) and significantly altered some beneficial bacteria in gut microbiota. In conclusion, the present study showed that milled flaxseed showed the potential on anti-T1D through anti-inflammation via TLR4/NF-κB and altering the gut microbiota in STZ-induced diabetic mice.

Effects of Flaxseed (Linum usitatissimum) Extract on the Osteoblast Differentiation Potential of Stem Cells Derived from Human Exfoliated Deciduous Teeth

Background: Flaxseed promotes bone health and possibly induces bone regeneration. However, the capacity of flaxseed to induce the differentiation of stem cells into osteoblasts remains unreported. Accordingly, this study aimed to determine the effects of flaxseed extract on the osteoblast differentiation potential of stem cells derived from human exfoliated deciduous teeth (SHED).

Green Biosynthesis of Flaxseed Gold Nanoparticles (Au-NPs) as Potent Anti-cancer Agent Against Breast Cancer Cells

In recent research work aqueous extract of flaxseed (Linum usitatissimum) is used for synthesis of gold nanoparticles (Au-NPs). Synthesized NPs was characterized by various spectroscopic techniques such as FTIR, UV–visible absorption, HPLC, Powder-XRD, X-ray photoelectron spectroscopy XPS, EDX, and TEM analysis. The flaxseed mediated Au-NPs adopt spherical and triangular morphology and distributed without aggregation in the range of 3.4–6.9 nm. The antioxidant efficacy of Au-NPs evaluated by free radical scavenging DPPH assay showed comparable potentials with ABTS assay. Further the synthesized Au-NPs are investigated for their anti-tumor activity against hepatocellular carcinoma (HepG2), breast adenocarcinoma (MCF-7), and colon carcinoma (HCT-116) cell lines. Docking studies explored the eminent affinity of SDG against MCF-7 than lotaustralin, linamarin, linustatin, and neolinustatin glycosides.

Phytochemical Study and Comparison of Antioxidant Potential and Phenolic Content of Different Solvent Extract of Flaxseed (Linum usitatissimum L.) and Biosynthesis of Gold and Silver Nanoparticles using its Extract

Phytochemical Study and Comparison of Antioxidant Potential and Phenolic Content of Different Solvent Extract of Flaxseed (Linum usitatissimum L.) and Biosynthesis of Gold and Silver Nanoparticles using its Extract

Flaxseed (Linum usitatissimum) Extract Activity on Human Oral Fibroblasts (HOrF) Cell Line

General health benefits have been demonstrated by natural products. Flaxseed (Linum usitatissimum) extract’s bioactivities have been reported in many studies such as antimicrobial, anti-oxidant, and anti-inflammatory effects. In addition, flaxseed extract has skin wound healing activity and potential for treating oral ulcers. Methodology: L. usitatissimum was extracted using 70% ethanol via soxhlet method, gas chromatography mass spectrum (GC-MS) was used to illustrate the components of L. usitatissimum extract. Human oral fibroblasts (HOrF) were cultured to be used for testing the activity of L. usitatissimum. 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assay was used to assess the HOrF cells viability at different time point; 24, 48 and 72 hours. Wound healing assay was used to monitor the healing of HOrF cells after treating them with flaxseed extract. The results of the assay were obtained at 18, 24, 48 and 72 hours. Results: The results of GC-MS illustrate the major components present in L. usitatissimum extract. The effect of L. usitatissimum extract on HOrF cells show high proliferation effect at 24 and 48 hours while the highest proliferation effect was recorded at 72 hours’ post-treatment. Wound healing assay results show healing activity of L. usitatissimum extract on HOrF cells as fast as 18 hours’ post-treatment. Conclusion: L. usitatissimum extract have proliferating and healing effects on HOrF cell line. Therefore, it can be considered as a potential promising oral wound healing agent.

Effect of coated carbon nanotubes with chitosan and cover of flaxseed in the induction of MDA-MB-231 apoptosis by analyzing the expression of Bax and Bcl-2

IntroductionFunctionalized carbon nanotubes have been used as molecular carriers in the cancer treatment. Medicine molecules bind to the surface functional groups of coated nanotubes or polymers. The aims of this research were to examine the effect of multilayer coated and uncoated carbon nanotubes containing flaxseed extract on MDA-MB-231 cell line and to study changes in induced apoptosis by measuring genes' expression of Bax and Bcl-2. Bcl-2 is anti-apoptotic gene and Bax is apoptotic gene. MethodsIn this study, MDA-MB-231 that is breast cancer cell line was cultured in DMEM medium as the culture media. The cells were divided into four equal groups, control group and three treatment groups. Cells were treated with different concentrations of flaxseed extract as medicine, chitosan-coated carbon nanotube and uncoated carbon nanotubes. The effects of the medicine were evaluated by MTT assay. Changes in the expression of Bax and Bcl-2 were analyzed by Real Time PCR. ResultsThe results showed that the expression level of Bax gene in chitosan-coated nanotubes carrying flaxseed and carbon nanotubes-containing flaxseed extract and crude carbon nanotubes and flaxseed extracts were respectively 9.125, 5.139, 1.576 and 3.151 that have significantly increased. Expression of Bcl-2 gene in chitosan-coated nanotubes containing flaxseed and carbon nanotube-coated nanotubes and crude carbon nanotubes and flaxseed extract were respectively −3.389, −2.915, −1.103 and − 2.604 that have significantly decreased. The results showed that flaxseed extract with carbon nanotube-chitosan nanoparticle carrier in a dose-dependent manner increased Bax gene expression and decreased Bcl-2 gene expression. ConclusionThe results showed that MDA-MB-231 cancer cells treated with carbon nanotube-chitosan nanoparticle and carrier of flaxseed extract had apoptosis and death due to increasing Bcl-2 and decreasing Bax. The use of flaxseed as a medicine and carbon nanotube-chitosan nanoparticle can be considered as a promising strategy in the treatment of breast cancer.

Histopathological Changes of the Flaxseed Extract on Skin Wound Healing in Diabetic Rabbits

BACKGROUND: Wound healing includes phases such as cell migration, extracellular matrix deposition, remodeling, and angiogenesis. There are growing medicines that accelerate wound healing, significantly herbal medications that mainly safe and reliable.&#x0D; AIM: The aim of the study is to examine the histological changes induced by flaxseed oil during wound healing in diabetic animal model.&#x0D; METHODS: Forty-five male white New Zealand rabbits divided into two main groups diabetic and non-diabetic each group is divided into three groups (n = 9).Diabetic animal group include: (1) Study group (adding Flaxseed), (2) positive control group (adding fucidin 2% cream), and (3) negative control group (no treatment) same distribution of non-diabetic animals groups. Four linearshape,full-thickness wounds were made in both sides of the backbone skin in each animal. Tissue samples were obtained at days 4th, 7th, and 14th post wounding for microscopical analysis, histopathological parameters included inflammation, re-epithelialization, neovascularization, and surface closure rates.&#x0D; RESULTS: The study groups (using flax seed) in both diabetic and non-diabetic groups show significant reduction in inflammatory cells infiltration at day 14 (0.67 ± 0.753) (1.67 ± 0.516), and noticeable increase in wound closure rate (4.00+-0.000). Both diabetic and non-diabetic animal groups show high re-epithelialization potential at day 4 and day 7, respectively (2.00 ± 1.549; 4.00 ± 0.00). Diabetic animal study group using flaxseed shows high neovascularization rate at the day 14 (2.17 ± 0.753) compared with positive control diabetic animal group (2.00 ± 0.000).&#x0D; CONCLUSION: Topical application of flaxseed promoted healing process particularly in diabetic animal model by shortening inflammation phase, elevating surface closure rate, promoting re-epithelialization process, and enhancing neovascularization, flaxseed is suggested as a potential effective herbal base medication for facilitating wound healing.