Evaluation of Matrix Metalloproteinase 2 and 9 Activity in Patients with Prostate Cancer and Benign Prostate Hyperplasia Compared with Healthy Individuals

Background and Aim: Prostate cancer (PC) is one of the most prevalent cancers with high mortality and morbidity in men, which can be treated in different ways before the progression and metastasis to distant organs. Destruction of extracellular matrix by matrix metalloproteinase (MMP), particularly by the 2 and 9 subtypes, has an important role in the metastasis of PC. We aimed to assess the activity of MMP 2 and 9 and some related metalloproteinases in PC and with benign prostate hyperplasia (BPH) patients in comparison to healthy individuals. Methods: In this case-control study, 72 individuals referred to Imam Khomeini hospital (Tehran, Iran), have been divided into 3 groups, including PC, BPH, and healthy control. Age and body mass index (BMI) for all groups have been matched. Venous blood samples were used to assess the enzyme activity by the zymography technique. Results: The activity of MMP-2 and 9 was significantly higher in PC than BPH and control groups. But there was no difference in the activity of enzymes in patients with PC according to the Gleason score. Conclusion: The results suggested that MMPs activity can be considered a diagnostic marker for PC. However, further studies are required to establish this concept. *Corresponding Author: Abbas Khonakdar-Tarsi; Email: [email protected] Please cite this article as: Shojaee M, Mohammadi P, Jafarpour H, Pouriamehr S, Barmaki H, Khonakdar-Tarsi A. Evaluation of Matrix Metalloproteinase 2 and 9 Activity in Patients with Prostate Cancer and Benign Prostate Hyperplasia Compared with Healthy Individuals. Arch Med Lab Sci. 2020;6:1-6(e12). https://doi.org/10.22037/amls.v6.3237

Melatonin inhibits endothelin-1 and induces endothelial nitric oxide synthase genes expression throughout hepatic ischemia/reperfusion in rats

The production of reactive oxygen species (ROS) and dysfunction of vasculature play a central role in the pathophysiology of hepatic ischemia/reperfusion (I/R) injury. The aim of this study was to evaluate the beneficial effects of melatonin on reducing liver I/R injury in rats. Four study groups were formed: (1) saline - administered, control group (Control), (2) melatonin-administered group (MEL), (3) saline -administered I/R group (I/R) and (4) melatonin-administered I/R group (MEL+ I/R). Melatonin was injected intraperitoneally (15 mg/kg) 20 min before ischemia and immediately after reperfusion. After reperfusion, blood and ischemic liver tissues were collected. The group subjected to ischemia showed a significant increase in the serum aspartate aminotransferase (AST) and alanine aminotransferase (ALT) levels, as well as an increase in hepatic malondialdehyde (MDA) concentration. These increases were significantly inhibited by melatonin. Although, I/R augmented the endothelin-1 (ET-1) gene expression and the level of big endothelin-1 (big ET-1) in liver tissue, melatonin attenuated these increases. Conversely, non-significant decrease in endothelial nitric oxide synthase (eNOS) mRNA expression in I/R group was significantly elevated by melatonin in MEL+ I/R group. Melatonin exerts beneficial effects on ischemia/reperfusion liver injury through its anti-oxidative function as well as regulation of hepatic microcirculation.Key words: Melatonin, oxidative stress, ischemia/reperfusion injury, endothelin and nitric oxide synthase

Nutrition Counseling Position in Reducing the Duration of Admission for Patients with Type 2 Diabetes Undergoing Cataract Surgery

Background and Aim: Cataract is one of the most common ocular diseases caused by various causes including congenital, resulting from trauma, drug or radiation, diabetes, or aging. Diabetes type 2, as a common metabolic disorder, is one of the main reasons for cataracts. we aimed to study nutritional counseling's status on the correction of glucose and urea and creatinine patterns and blood pressure of patients undergoing cataract surgery and reducing the pre-operative hospitalization time. Methods: In this study, 60 women with type 2 diabetes and 39 male participants aged 25 to 65 (aged 25 to 65) were randomly assigned into two groups (control without diet and nutritional counseling). The target group (presentation of diabetic diet and nutrition counseling) went under investigation two weeks before cataract surgery. Blood sampling proceeded from the arm vein in a sitting way one day before and after the diet (12 hours of fasting). Results: Fasting blood glucose, body weight, waist circumference, urea, creatinine, blood pressure, and hospitalization period were significantly decreased after surgery (p≤0.05). Conclusion: The results showed that receiving nutrition counseling and diet before cataract surgery can improve fasting blood glucose, 2-hour blood glucose, body weight, urea, creatinine, blood pressure, and thus hospitalization and recovery be reduced after surgery. *Corresponding Author: Fariba Mohammadi Tahroodi; Email: [email protected] Please cite this article as: Vaziri Javid R, Safizadeh F, Lotfi F, Pouriamehr S, Khonakdar-Tarsi A, Akbari Javar A, Zarpou S, Mohammadi Tahroodi F. Nutrition Counseling Position in Reducing the Duration of Admission for Patients with Type 2 Diabetes Undergoing Cataract Surgery. Arch Med Lab Sci. 2019;5(4): 37-43. https://doi.org/10.22037/amls.v5i4.3008

Effects of Pomegranate Juice with and without Aerobic Training on Glycemic Control and Lipid Profile in Women with Type 2 Diabetes

Background and Aim: Type 2 diabetes is a common metabolic disease, which is associated with obesity and inactivity. Plant-based dietary patterns are recommended for the treatment of type 2 diabetes. On the other hand, the effect of aerobic training on the improvement of type 2 diabetes is also highly emphasized. The purpose of this study was to investigate the effects of 2-months of pomegranate juice consumption with and without aerobic training on the levels of HbA1c, fasting blood glucose (FBG), lipid profile in women with type 2 diabetes. Methods: In this study, 58 women with type 2 diabetes who were referred to Tehran Lorzadeh clinic were randomly divided into four groups: control, pomegranate juice, aerobic training, combined pomegranate juice with aerobic training. The aerobic training plan consisted of 2-months and three times per week (training time from 20 minutes to 45 minutes). Three days before and after this interventional study, serum levels of FBG, total cholesterol (TC), triacylglyceride (TG), and low-density lipoprotein (LDL) were measured by colorimetric methods. Results: Results showed that combined pomegranate extract consumption with aerobic exercise training significantly decreased the levels of FBG, HbA1c, and TG in women with type 2 diabetes compared to the control group after the intervention (P<0.01), while TC, LDL-c, and BMI remained unchanged. There was no statistically significant difference in the levels of TC, TG, HbA1c, and FBG in pomegranate extract or aerobic training groups compared to the control group after intervention. Conclusion: The results of this study indicate that combined pomegranate juice with aerobic training has beneficial effects on type 2 diabetes and could be recommended in their therapeutic program. *Corresponding Author: Fariba Mohammadi Tahroodi; Email: [email protected] Please cite this article as: Vaziri Javid R, Safizadeh F, Rastegary M, Nabi Afjadi M, Khonakdar-Tarsi A, Zare Z, Zarpou S, Mohammadi Tahroodi F. Effects of Pomegranate Juice with and without Aerobic Training on Glycemic Control and Lipid Profile in Women with Type 2 Diabetes. Arch Med Lab Sci. 2020;6.1-6 (e17). https://doi.org/10.22037/amls.v6.3038

Melatonin Protective Effects against Liver Ischemia/Reperfusion Injury

Hepatic ischemia-reperfusion (I/R) is a common phenomenon during liver surgery, transplantation, infection and trauma which results in damage and necrosis of the hepatic tissue through different pathways. Mechanisms involved in I/R damage are very intricate and cover several aspects. Several factors are involved in I/R-induced damages; briefly, decrease in sinusoidal perfusion and ATP generation because of low or no O2 supply, increase in production of reactive oxygen species (ROS) and inflammatory factors and destruction of parenchymal cells resulted by these molecules are of the main causes of liver tissue injury during reperfusion. Melatonin’s antioxidant effect, and regulatory roles in the expression of different genes in the I/R insulted liver have been investigated by several studies. Melatonin and its metabolites are of the powerful direct scavengers of free radicals and ROS, so it can directly protect liver cell impairment from oxidative stress following I/R. In addition, this bioactive molecule up-regulates anti-oxidant enzyme genes like superoxide dismutase (SOD), glutathione peroxidase (GSH-Px) and catalase (CAT). Tumor necrosis factors (TNF-α) and interleukin-1 (IL-1), as potent pro-inflammatory factors, are generated in huge amounts during reperfusion. Melatonin is able to alleviate TNF-α generation and has hepatoprotective effect during I/R. It reduces the production of pro-inflammatory cytokines and chemokines via reducing the binding of NF-κB to DNA. Imbalance between vasodilators (nitric oxide, NO) and vasoconstrictors (endothelin, ET) during I/R was shown to be the primary cause of liver microcirculation disturbance. Melatonin helps maintaining the stability of liver circulation and reduces hepatic injury during I/R through preventing alteration of the normal balance between ET and NO. The aim of this review was to explore the mechanisms of liver I/R injuries and the protective effects of melatonin against them

Effect of dexamethasone on the endothelin-1 (ET-1) and endothelial nitric oxide synthase (eNOS) genes expression during hepatic warm ischemia/reperfusion in rat

Background: Hepatic ischemia/reperfusion injury (I/RI) is a multifactorial pathophysiologic process which can lead to liver damage and dysfunction. This study examined the protective effect of dexamethasone on the gene expression of endothelial nitric oxide synthase (eNOS) and endothelin-1 (ET-1) and on the liver tissue damage during warm hepatic I/R. Materials and Methods: A total of 32 male Wistar rats was randomly divided into four groups of eight: SHAM: the group receiving saline; DEX: the group receiving dexamethasone (8 mg/kg); I/R: Ischemia-reperfusion insulted group; and DEX + I/R: I/R group receiving dexamethasone. After 3 h of reperfusion followed by 60 min of ischemia, serum and ischemic tissue were collected. Serum was used to determine the hyaluronic acid (HA), aspartate and alanine aminotransferases (AST and ALT). To evaluate the eNOS and ET-1 gene expression, the total RNA was extracted from the liver tissue, cDNA was synthesized and real-time PCR was performed. Tissue staining was performed by the Hematoxylin and Eosin stain. Results: I/R increased serum AST, ALT and HA in I/R group compared with that in the SHAM group (P < 0.001). Dexamethasone significantly reduced the indicators in DEX + IR group (P < 0.001). In addition, the gene expression of the eNOS and ET-1 increased during I/R. Dexamethasone could significantly decrease the ET-1, but not eNOS gene expression in the DEX + IR group. Conclusions: Dexamethasone can decline hepatic I/RI by protecting the sinusoidal endothelial glycocalyx and modifying the expression of ET-1. Given that the reactive oxygen species (ROS) are the main cause of glycocalyx degradation and ET-1 is the regulator of hepatic perfusion, thus, dexamethasone has antioxidant properties and helps proper hepatic perfusion after ischemia to maintain

The Effect of Dexamethasone on Expression of Inducible Nitric Oxide Synthase Gene During Liver Warm Ischemia-reperfusion in Rat

Background: Liver ischemia / reperfusion Injury (IRI) is one of the major causes of liver failure during various types of liver surgery, trauma and infections. The present study investigates the effect of dexsamethasone on the liver injury and inducible nitric oxide synthase gene expression during hepatic warm ischemia/reperfusion in rats. Materials and Methods: 24 male Wistar rats (200-250 g) were randomly divided into 3 group 8 rat each: 1) saline treated group (Control), 2) saline - administered ischemia/reperfusion insulted group (IR), and 3) dexamethasone - administered IR group (DEX + IR). Dexamethasone were injected twice at a dose of 8 mg/kg intraperitoneally (60 min before ischemia and immediately after reperfusion). After 1 h of ischemia and 3 hours of subsequent reperfusion, blood and liver samples were collected. Results: Ischemia significantly increases serum aspartate aminotransferase (AST) and alanine aminotransferase (ALT) levels in the IR group which significantly were reduced by dexamethasone in DEX + IR group (P< 0.05). In parallel to this finding, according to histopathological imaging, dexamethasone reduces hepatic tissue damages. In addition elevated inducible nitric oxide synthase gene expression in IR was significantly decreased in DEX + IR group (P< 0.05). Conclusion: Dexamethasone, an anti- imflammatory drug, can decline hepatic IR stimulated damages through inhibition of immune mediated reactions and inhibition of iNOS gene expression