جستجوی مقالات مرتبط با کلیدواژه « berberine » در نشریات گروه « پزشکی »

Bacterial infections are a major cause of chronic infections and mortality, and antibiotics are the preferred treatment for bacterial infections. However, studies show that widespread use of antibiotics has led to the emergence of multidrug-resistant bacterial strains. Hence, the need to develop new and alternative strategies for the production of effective drugs has become an important issue. Recently, the use of nanotechnology has been widely common in various fields. Materials in the nanoscale have unique physical and chemical properties. Silver nanoparticles have different applications and their antimicrobial properties have been confirmed in several studies. This study aimed to investigate the antibacterial properties of silver nanoparticles synthesized by berberine and Hypericum perforatum extract.

In this experimental study, the antibacterial effects of synthesized nanoparticles on standard strains of Escherichia coli [ATCC 25922], Pseudomonas aeruginosa [ATCC 27853], Klebsiella pneumoniae [ATCC 9997], and Staphylococcus aureus [ATCC 29212] were investigated. The MIC content of silver nanoparticles alone and in combination with berberine and Hypericum perforatum extract was investigated for the studied bacteria using the broth microdilution method.

The results of the evaluation of the minimum inhibitory concentration [MIC] of the synthesized compounds on the studied bacteria showed that the nanoparticles synthesized by berberine and Hypericum perforatum extract had the highest antibacterial effects. However, each of the compounds Berberine and Hypericum perforatum extract alone did not show significant antibacterial properties. The results of this study also showed that the highest inhibitory concentration of nanoparticles synthesized by berberine and Hypericum perforatum extract was related to Pseudomonas aeruginosa [0.0375 mg / ml] and the lowest inhibitory concentration was related to Enterococcus faecalis [0.185 mg/ml].

The results of the present study showed that silver nanoparticles synthesized with berberine and Hypericum perforatum extract have significant antibacterial effects. As a result, nanoparticles, including silver nanoparticles, can become one of the most important alternatives to antibiotics due to their unique properties in targeting bacteria. However, achieving definitive results requires further studies in this area.

Methamphetamine increases the release of dopamine from nerve terminals. Binding of dopamine to dopamine receptors increases the phosphorylation of cyclic adenosine monophosphate responsive element (CREB) protein and changes the transcription of downstream genes.The purpose of this study is to investigate the effect of methamphetamine induction followed by aerobic training and Berberine on dopamine receptor 4 and CREB gene expression in the heart tissue of methamphetamine-addicted female rats during the withdrawal period.

30 rats were randomly divided into 5 control groups, methamphetamine, methamphetamine + aerobic training, methamphetamine + Berberine, methamphetamine + aerobic training + Berberine. Intraperitoneal injection of 10 mg/kg of methamphetamine was performed for 5 days, and during the withdrawal period, aerobic training was performed for 4 weeks and simultaneously the consumption of berberine 100 mg/kg as a solution in drinking water was considered. Real Time PCR method was used to measure gene expression. Independent T-test, Kruskal-Wallis test and SPSS24 software were used at the level of 0.05 to analyze the data. The code of ethics in the research was received with number IR.IAU.SHAHROOD.REC.1402.015.

The results showed that methamphetamine use caused a non-significant increase (97%) in CREB expression and a non-significant decrease (52%) in dopamine 4 receptor compared to the control group (P>0.05). The implementation of interventions during the withdrawal period, such as Berberine consumption and the combination of berberine with aerobic training, produced non-significant increasing and decreasing effects on dopamine 4 receptor gene expression and CREB in the heart of methamphetamine-addicted rats, respectively (P > 0.05).

Short-term induction of methamphetamine did not cause significant changes in the expression of dopamine 4 receptor and CREB genes in the heart. Therefore, these genes could not undergo a significant change as a result of interventions such as Berberine and exercise. More studies are needed to investigate exact genetic changes in heart tissue.

Chronic myeloid leukemia (CML) is an uncommon type of white blood cells cancer that originates from bone marrow stem cells. Progesterone (P4) and berberine (BBR) are bioactive compounds that inhibit the growth of tumor cells. The present study aimed to assess the simultaneous effect of P4 and BBR on the level of reactive oxygen species (ROS) in K562 cells. The K562 cells were cultured in a complete cell culture medium and simultaneously exposed to IC50 different concentrations of P4 and BBR at 24 h (P4:102.4 μM; BBR:125 μM), 48 h (P4:78.4 μM; BBR:114 μM), and 72 h (P4:70 μM; BBR:45 μM). Then, the cell viability and cellular ROS level were determined using MTT assay and 2′, 7′-dichlorofluorescin diacetate (DCF) by flow cytometry, respectively. Our results showed that the combination of P4 and BBR inhibited the cells more effectively than P4 and BBR alone at 72 h, as well as P4 and their combination reduced ROS level in the cells compared to BBR and untreated cells at 24 h and 72 h. Taken together, P4 through a ROS-dependent pathway and BBR through a ROS-independent pathway may be inhibited cell growth.

Acute lymphoid leukemia (ALL) is a type of blood cancer associated with the malignant proliferation of lymphoid progenitor cells. In recent years, natural medicines have received attention due to reasons such as availability, fewer side effects, and lower costs. Berberine (BBR) is a bioactive compound with anticancer effects that influences progesterone production. Progesterone can affect some tumors by inhibiting or inducing cell proliferation through its nuclear or membrane receptors. In this study, we investigated the effect of BBR on the expression of membrane progesterone receptor beta (mPRβ) in NALM6 cells. After culturing the cells in a serum-containing medium, the cells were treated with different concentrations of BBR (20-100 μM) at 48 and 72 h, and cell survival was determined using the MTT assay. Finally, the effect of BBR on the expression of mPRβ in NALM6 cells at concentrations of 30 and 10 μM at 48 and 72 h, respectively, was evaluated using flow cytometry. Our results showed that the cells express mPRβ. The BBR significantly inhibited cell growth in a concentration- and time-dependent manner, and mPRβ expression was significantly decreased in treated cells compared to untreated cells. These findings suggest that NALM6 cells are most likely influenced by progesterone. In addition, apart from its direct anticancer effects, BBR may also modulate the effects of progesterone on cancer cells. The findings of this study may be useful for designing new anti-cancer approaches.

Aluminum is a component of environmental pollutants, which causes neurotoxicity. Berberine is in the group of plant-derived alkaloids such as barberry and its beneficial therapeutic properties in various diseases have been proven. The aim of the present study was to investigate the protective effect of berberine on aluminum-induced neurotoxicity.

In this experimental study, 32 male Wistar rats were randomly divided into 4 groups: sham, berberine-receiving sham, lesions-seeing and berberine-receiving lesions. To induce neurotoxicity, a solution of aluminum chloride (AlCl3) dissolved in distilled water was injected at 5 µL at a dose of 0.37 mg/kg to the left of the dorsal hippocampus. The treated rats received 100 mg/kg of berberine daily from one hour before surgery to one week after surgery and orally. In the fourth week, all groups were tested for behavioral learning and memory using the shuttle box. At the end, malondialdehyde, protein, ROS levels and acetylcholinesterase activity were measured. The results were analyzed using one-way ANOVA test and Tukey test.

In the treated AlCl3 group compared to the AlCl3 group, the initial delay was not significantly different but the delay during transit was significantly increased. MDA and ROS levels and acetylcholinesterase activity showed a significant decrease.

The results of this study showed that although treatment with berberine in the lesion group by aluminum chloride did not cause a significant difference in learning in rats, but it significantly improved memory, significantly reduced malondialdehyde, significantly reduced oxygen free radical levels and significantly reduced activity. Acetylcholinesterase and it can be said that berberine with antioxidant properties improved memory and neuroprotection against neurotoxicity caused by aluminum chloride.

Bromobenzene is an environmental toxin whose metabolites cause renal toxicity. The mechanism involved in toxicity includes oxidative stress. The aim of this study was to investigate the protective effects of berberine against bromobenzene-induced renal toxicity in male NMRI mice.

In this experimental study, subjects were divided into five groups. Group I: control: recipient of normal salineGroup II: recipient of bromobenzene at a dose of 0.36 ml/kg intraperitoneally on the tenth day. Third, fourth and fifth groups: recipient of berberine at doses of 25, 50, 100 mg/kg, orally for 10 days successively, and bromobenzene at a dose of 0.36 ml/kg intraperitoneally. 24 hours after the last administration, blood samples were taken from animals and renal markers were measured. The right kidney was used to measure markers of oxidative stress and the left kidney was used for histological studies.

The results of this study revealed that bromobenzene administration causes a significant increase in blood urea nitrogen creatinine, malondialdehyde and nitric oxide, as well as a significant reduction of glutathione levels and activity of catalase, superoxide dismutase and glutathione peroxidase enzymes than the control group (p<0.05). But berberine causes a significant decrease in blood urea nitrogen creatinine, malondialdehyde and nitric oxide, as well as a significant increase of glutathione levels and activity of catalase, superoxide dismutase and glutathione peroxidase enzymes than the bromobenzene group (p<0.05).

The present study indicates that treatment with berberine significantly improved renal function and reduced oxidative damage to kidney tissue in bromobenzene-induced toxicity.

Lung cancer is the most common cause of cancer death worldwide. Berberine as a herbal alkaloid has antioxidant, anti-cancer and anti-tumor properties. Cisplatin is a potent inducer of apoptosis in most types of cancer cells. In the present study, investigated the ability of berberine alone and in combination with cisplatin to induce apoptosis in the Calu-6 cell line (human lung cancer cell line).

In this experimental study, MTT assay was used to evaluate the cytotoxic effects of combination of berberine with cisplatin on Calu-6 cell proliferation; DAPI staining and annexin V-FITC assay were also used to evaluate apoptosis in treated cells; changes in the level of transcripts of BAX, Caspase 3,9, p53 genes were examined by real-time PCR. Quantitative data were analyzed by one-way ANOVA at a significant level of P<0.05.

The MTT assay results showed that the combination of berberine with cisplatin inhibits the proliferation of Calu-6 cells in a concentration- and time-dependent manner. Morphological observations obtained from DAPI staining method and annexin V-FITC assay showed an increase in apoptotic cells in the treatment groups. The real-time PCR results showed an increase in the expression of transcripts of BAX, Caspase 3,9, p53 genes in the treatment groups.

The results of this research showed that the concomitant use of berberine with cisplatin inhibits the proliferation of Calu-6 cells and induces apoptosis in these cells.

Traumatic brain injury (TBI) is the leading cause of death in young people. Berberine is a flavonoid rich in barberries and many traditional Iranian herbal remedies that could be used in treatment of neurodegenerative diseases. These properties make it a viable treatment for neurodegenerative diseases. Therefore, this study intended to investigate the neuroprotective activity of berberine in animal model of traumatic brain injury.

Thirty minutes after induction of traumatic brain injury by Marmarou free fall method, Wistar rats received berberine (10, 20 and 50mg/kg i.p.). Cerebrospinal fluid (CSF) was collected from cisterna magna after behavioral tests to evaluate the levels of a proinflammatory cytokine (IL-1β) and anti-inflammatory cytokine (IL-10).

According to current results, TBI can cause decline in Veterinary coma scale, cerebral edema, Blood-Brain Barrier dysfunction, vesibulomotor impairment, and alteration of cytokines in favor of inflammation in CSF. Nevertheless, administration of berberine in 10 and 20mg/kg can attenuate these findings. Also, beberine (20 mg/kg) effectively increased IL-10 and decreased IL-1β in CSF. All findings were more noticeable at 20mg/kg berberine (P < 0.001).

Our study showed that berberine had neuroprotective effects on the brain and was able to affect the consequences of brain trauma. Also, it is suggested that at least some of these neuroprotective effects are mediated by modulation in the path of inflammatory factors in the brain.

Constant exposure to lead, even in small amounts, can lead to damage to various systems of the body. The production of reactive oxygen species (ROS) and the weakening of the endogenous antioxidant system play a major role in lead damage. Antioxidant drugs may be effective in reducing lead-induced damage, so in this study, the effect of berberine on lead-induced oxidative agents was investigated.

In this study were used forty male wistar rats. The animals were randomly divided into 5 groups. 1-Sham group, four groups that received lead orally for one month. These four groups included the 100ppm and 500ppm lead poisoned groups and the 100 and 500ppm lead poisoned groups treated with berberine 50mg / kg. Lead was added to the drinking water of the animals and berberine was gavaged daily. After the treatment period, the animals were deeply anesthetized and blood sample was taken from the heart of animals to evaluate the activity of antioxidants glutathione (GSH), catalase (CAT) and Superoxide Dismutase (SOD) and malondialdehyde MDA level in the serum.

The results of biochemical factors showed that serum SOD, CAT and GSH activity in lead poisoning groups were not significantly different from sham group. Berberine was able to increase SOD activity in the lead 500 group. Berberine also increased CAT activity in the lead-poisoned group receiving 500 dose of lead. Also, in lead groups treated with berberine, a significant increase in GSH activity was observed compared to the lead group. The results of the MDA examination showed that the serum MDA level of rats that received lead increased significantly compared to sham group and berberine decreased MDA level in lead 500 group.

In general, the results of this study showed thatexposure to lead for 2 months has no effect on the activity of antioxidant, but increases serum MDA. Increased MDA indicates the presence of oxidative stress. The study also found that berberine increased the antioxidants activity and decreased the MDA level