Avicenna Journal of Phytomedicine最新文献

Objective: The present study examined the effects of Artemisia absinthium L. on scopolamine-induced memory dysfunction and brain tissue oxidative damage in rats.

Materials and methods: Fifty rats were used in five groups: Control: received dimethyl sulfoxide (DMSO)/saline, Scopolamine: scopolamine (2 mg/kg) was administered along with DMSO/saline, and Scopolamine-Ext 50, Scopolamine-Ext 100, and Scopolamine-Ext 200 groups: A. absinthium hydroalcoholic extract 50, 100 and 200 mg/kg were administered before scopolamine. The Morris water maze (MWM) and passive avoidance (PA) tasks were used for assessment of behavioral parameters. Malondialdehyde (MDA), nitric oxide (NO) metabolites, total thiol, catalase (CAT), and superoxide dismutase (SOD) were measured in the cortex and hippocampus.

Results: A. absinthium decreased the delay time and distance traveled to reach the platform in the MWM test (p<0.05-p<0.001). Besides, the extract increased the delay time to pass in the dark and the light time while decreasing the number of entrances and the dark time in the PA task (p<0.05-p<0.001). In biochemical assessments, A. absinthium attenuated NO metabolites (p<0.001) and MDA (p<0.05- p<0.001) while enhanced total thiol (p<0.001), CAT and SOD (both p<0.05-p<0.001).

Conclusion: This study revealed that A. absinthium improved memory and learning impairment and brain tissue oxidative damage in scopolamine-treated rats.

Objective: Portulaca oleracea, commonly known as Purslane, is traditionally used as a sour, diuretic, and cooling herb with hemostatic properties. The present study evaluates the antianemic effect of methanolic and aqueous extracts of P. oleracea in a phenylhydrazine model of anemia.

Materials and methods: Phenylhydrazine (60 mg/kg/day, i.p., two consecutive days) was used to induce anemia in rats. The aqueous and methanolic extracts of P. oleracea were prepared, and three methods of treatment were defined with two doses (500 and 750 mg/kg, i.p.). The hematological parameters and blood cell morphology, total and direct bilirubin, and morphology, and pathology of bone marrow were evaluated.

Results: The results showed that the methanolic extract has better effects than aqueous extract in improving phenylhydrazine-induced anemia. Our results showed that administration of 500 and 750 mg/kg of P. oleracea methanolic extracts for 4 days could protect against the development of anemia caused by phenylhydrazine.

Conclusion: In summary, the methanolic extracts of P. oleracea might be effective in phenylhydrazine-induced anemia.

Objective: Migraine is one of the most common diseases. Curcumin with anti-oxidative and anti-neuroinflammatory properties might have beneficial effects in migraine patients. This study will be conducted to evaluate the effects of a phytosomal preparation of curcumin on clinical signs, oxidative stress, and inflammatory parameters in patients with migraine.

Materials and methods: This is a randomized, double-blind, placebo-controlled, clinical trial in which, 60 patients with migraine will be assigned to receive a daily dose of 250 mg of phytosomal curcumin for 8 weeks (intervention group) or 250 mg maltodextrin as a placebo for the same duration (control group). Before and after the study, frequency, duration, and severity of the attacks, quality of life and sleep, mood status, high-sensitivity C-reactive protein (hs-CRP), Nitric Oxide (NO), and oxidative stress factors will be measured.

Conclusion: It seems that phytosomal formulation of curcumin (a solid dispersion preparation of curcumin with phosphatidylserine) with high bioavailability, can cross the blood-brain barrier (BBB) and result in decreased neuroinflammation, oxidative stress, and neurotoxicity. This way, phytosomal curcumin might lead to reduction of headaches and other complications of migraine and increase the quality of life of patients with migraine.

Objective: Medicinal plants with fewer side effects and low cost than synthetic medicines are increasingly advised to treat diseases. The present study aimed to identify Eryngium billardieri compounds and evaluate the plant's effects on hyperglycemic and hyperlipidemia indices, and liver, and kidney function.

Materials and methods: Following identification of Eryngium billardieri using GC/MS method, 72 participants were randomly divided into two groups (n=36 per group), receiving oral hypoglycemic medication (metformin) with or without 50 ml hydrosol twice a day for three months as intervention and placebo control, respectively. Body mass index (BMI), systolic and diastolic blood pressure, fasting blood sugar (FBS), glycosylated hemoglobin (HbA1c), total cholesterol, triglyceride, HDL-C, and LDL-C levels were measured at the beginning and end of the experiment. Also, aspartate transaminase, alanine transaminase, blood urea nitrogen, and creatinine levels were measured to assess adverse effects on liver and kidney functions.

Results: The main components were terpenes with 46.69% of the total ingredients of E. billardieri essential oil. Other prominent compounds identified included octanoic acid (12.14 %) and isoxazole (6.72 %). Intergroup changes in blood parameters showed that E. billardieri hydrosol for three months could significantly reduce HbA1C and blood cholesterol levels but did not affect other measured parameters. Also, there were no adverse effects on kidney or liver function.

Conclusion: The present findings showed that the consumption of 50 ml of E. billardieri hydrosol as a complementary treatment in diabetic patients reduced HbA1C and cholesterol levels without adverse effects on the liver or kidneys functions.

Objective: Thrombin is a proinflammatory and pro-coagulant agent which is upregulated in several human diseases. Thrombin has a critical role in promoting cell proliferation and microvascular leakage in malignant cells, resulting in cancer growth and progression. Here, we explored the potential therapeutic value of curcumin on permeability induced by thrombin in mice.

Materials and methods: To assess the activity of curcumin on thrombin-induced vascular permeability mice model, C57BL / 6 mice were randomly divided into four groups: (1) control (2) Thrombin (3) Thrombin + Curcumin and (4) Thrombin + Metformin. Thirty minutes after treatment, Evans blue was injected intravenously through the tail vein to mice. Then, animals were sacrificed and the dye was extracted from the skin tissue by incubation with formamide. Heatmap and correlation map were generated and protein-protein interaction network of the hub genes was drawn by Cytoscape software.

Results: Hub DEG expression rate showed that Heat shock protein a1 (Hspa1) family (comprised of HSPa1a, b, and HSPa5), caspase 3, and minichromosome maintenance complex component 2 were overexpressed after treatment with curcumin. Functional modules of curcumin enriched through Enrich gene biological process and revealed positive association of gene expression of apoptosis process with the therapy. Curcumin was also found to reduce leucocyte migration in murine tissues. Additionally, treatment with curcumin resulted in downregulation of heat shock proteins and proinflammatory cytokines such as monocyte chemotactic protein 1, interleukin-6 and chemokine (C-X-C motif) ligand 3.

Conclusion: Curcumin inhibited the proinflammatory cytokines and inflammatory HSPs in endothelial cells and reduced thrombin-induced barrier destabilization in vivo.

Objective: Peripheral nerve injury is a clinical problem that may cause sensory and motor inabilities. Sesamol is an antioxidant that can help in repairing damaged central nervous system (CNS) and other organs. The present study aimed to investigate whether the antioxidant effects of sesamol could improve the function, structure, and myelination in rats' damaged peripheral nervous system (PNS).

Materials and methods: In this study, 28 adult male Wistar rats were randomly divided into four groups. In the sham group, the sciatic nerve was exposed and restored to its place without inducing crush injury. The control received DMSO (solvent) and the two experimental groups received 50 or 100 mg/kg sesamol intraperitoneally for 28 days after sciatic nerve crush injury, respectively. Next, sciatic function index (SFI), superoxide dismutase (SOD) activity, malondialdehyde (MDA) level, expression of nerve growth factor (NGF) and myelin protein zero (MPZ) proteins in the sciatic nerve, and histological indices of the sciatic nerve and gastrocnemius muscle were evaluated.

Results: The results showed that sesamol reduced oxidative stress parameters, increased expression of NGF and MPZ proteins, and improved function and regeneration of the damaged sciatic nerve. Furthermore, a significant regeneration was observed in the gastrocnemius muscle after treatment with sesamol. Although administration of both doses of sesamol was useful, the 100 mg/kg dose was more effective than the 50 mg/kg one.

Conclusion: The results suggest that sesamol may be effective in improving damaged peripheral nerves in rats by reducing oxidative stress and increasing the expression of NGF and MPZ proteins.

Objective: Traditional herbal plants have been in use since ancient times to treat ophthalmic conditions; so, the aim of this study is to evaluate some potent Indian traditional medicinal plants used in ophthalmic diseases in order to summarize their potential effect in ophthalmology along with their mechanism of action.

Materials and methods: Databases PubMed, Google Scholar, and Embase were extensively explored. Additionally, relevant textbooks and literatures were consulted to summarize most of the considerable scientific literature for the review. Search term included ophthalmology, glaucoma, cataract, trachoma, conjunctivitis, traditional medicines, Unani drugs, and ayurvedic drugs were used. Around 80 review articles were consulted from the year 1982 to 2021.

Results: The traditional medicinal plants are easily available, cost-effective and have no associated side effects in comparison to current conventional treatments. Moreover, these drugs in oppose to modern medicine, have an inherent potential to accelerate the body's own immunity to fight against any infection. A large volume of scientific studies has reported the beneficial effects of traditional drugs in ophthalmology.

Conclusion: This review, therefore, describes the potential benefits and uses of some traditional medicinal plants used in ophthalmic diseases.

Objective: The aim of this study was to evaluate the effect of crocin on the prevention of atrial fibrillation after coronary artery bypass grafting (CABG) and heart valve replacement.

Materials and methods: 100 patients who were scheduled for CABG or heart valve replacement surgeries were randomly assigned into two groups of treatment and placebo. In the treatment group, patients received crocin tablets from three days prior to surgery and on the first three postoperative days (for a total of six days). During the first three days after surgery, postoperative atrial fibrillation (POAF) was assessed by electrocardiogram monitoring. Prooxidant-antioxidant balance (PAB) and c-reactive protein (CRP) levels were also assessed.

Results: POAF developed in 7 patients in the treatment group versus 18 patients in the control (p=0.02). PAB levels were significantly lower in the crocin group (p<0.001), while differences in CRP levels were insignificant (p=0.39).

Conclusion: It seems that prophylactic use of crocin is effective in reducing the incidence of POAF in patients undergoing heart surgeries.