Tryptophan lessens reserpine induced anxiety, depression and memory impairment by modulating oxidative stress and serotonergic activity.

Reserpine (Res)-induced depletion of monoamines and altered neurotransmission and produces oxidative stress. Tryptophan (TRP) regulated the serotonin neurotransmission. Because systemically injected Res induced behavioral deficits and oxidative stress, while, dietary components prevented these adverse effects, we used TRP a pharmacological tool to prevent Res- induced changes in behavior, memory impairments, oxidative stress and regulation of serotonin neurotransmission in rats. Anxiolytic, antidepressant, cognitive functions, lipid peroxidation, antioxidant enzymes serotonin metabolism were studied in Res and vehicle treated animals following administration of 50 and 100 mg/ml/kg of tryptophan. Following administration of TRP [50 and 100mg/ml/kg], Res induced anxiety-and/or depression like behaviors normalized. Res-induced impaired cognitive function and increased acetylcholinesterase activity also improved following administration of TRP at both doses. Res induced increased brains' malondialdehyde (MDA) and decreased antioxidant enzymes activity also normalized by TRP. Res-induced decreased 5-HT metabolism also regulated by administration of TRP at both doses. In conclusion it can be recommended that administration/supplementation of TRP in daily life can aid in battling the anxiety, depression, modulating serotonergic activity and oxidative stress. Study also exhibits the anti-acetylcholinesterase role of TRP which may be possible reason for improved cognition following stress situation.

Biosynthesis of silver nanoparticles from Mukia maderaspatana (L) and their biological activities.

Nanotechnology is a field of science that consists of atoms, molecules and supramolecular molecules that create nanoparticles ranging in size from 1-100nm. Silver nanoparticles are widely used that are considered as effective antimicrobial agents. In this paper, the antioxidant activity of biosynthesized SNPs were analyzed by the DPPPH activity, hydrogen peroxide activity, hydroxyl RSA, TAC, TFC; their results confirmed that the phenolic compounds of this plant peels extracts enhanced the antioxidant and antiglycation activity with respect to silver nanoparticles. Biosynthesized nanoparticles of this plant extracts also showed strong zone of inhibition against the different Xanthomas, Pseudomonas and E. coli. This study concluded that biosynthesized nanoparticles of Mukia maderaspatna (M.M) plant peels extracts have the great biological activities i.e. antiglycation, antioxidant and antibacterial. More research is needed to know the exact dose rate and to compare the different dose combination of the plant with the strong antibiotic agents against these bacteria.

Hyperlipidemia and hyper glycaemia in Breast Cancer Patients is related to disease stage.

OBJECTIVE: The study was designed to determine the hyperlipidemia in breast cancer of patients at disease presentation, without any treatment and to correlate these variations with disease stage. METHODS: This cross sectional study was conducted at Liaquat National teaching hospital in Karachi from 2006 to 2011, Age and family history of 208 breast cancer patients with infiltrating Ductal Carcinoma were compared with 176 matched control subjects. Married females were selected, with children and short breast feeding period. Cancer stage I-III was considered for the study and patients were grouped on the basis of Tumor grade, Tumor size, lymph node metastasis and disease free survival. Disease staging was based on tumor size and lymph node metastasis. Biochemical estimations included variations in random blood glucose level and lipid profile. RESULTS: Lipid profile and random blood glucose level were found significantly high (p<0.05) compared to control subjects. Hyperlipidemia was significantly high in breast cancer patients with lymph node metastasis. On increase in tumor grade I to II, increase in total cholesterol (4%), LDL-cholesterol 23% and 11% increase in triglycerides was observed. On Tumor size increase from ≤2 to 2.5cm, increase observed in blood random glucose level was (4%), total cholesterol (1.7%) triglycerides (2%) and LDL (3%) whereas HDL was (2%) low. These variations remain insignificant on further increase in tumor size and grade. CONCLUSION: Study suggests that variation in lipid profile and blood random glucose level is associated with disease stage. No independent correlation of hyperlipidemia and hyperglycemia was developed with disease free survival.

Risk profile for breast carcinoma and tumour histopathology of medical uninsured patients in Pakistan.

BACKGROUND: Breast carcinoma is an unpredictable disease in the sense that some patients may die at early disease stage due to wide-spread metastasis within six months to one year, while others may survive longer. This study was aimed to evaluate the risk factors for breast carcinoma occurrence and histopathological features of breast carcinoma developed in the social and economical conditions of Pakistan. METHODS: A total of 224 female breast cancer diagnosed patients with uncovered medical insurance visiting at the Oncology clinic of a teaching hospital at Karachi, Pakistan were selected for the study. Two hundred and twenty-four (224) healthy female subjects free of any cancer diagnosis were selected as control from different areas of the city. Information on stress, occupation, life history, and life style was obtained through personal interviews. Breast tumour pathology was evaluated for histological grade, lymph node metastasis and hormone receptor status by using standard methods. Student's t-test, Chi-square test and ANOVA were used for comparison. RESULTS: Breast cancer patients in significantly high percentage reported early marriages, abortion occurrence, stressful life style, family cancer history and past disease suffering from diabetes and hypertension. Life style including aerosol chewing and fat rich food intake was significantly high among the patients (p<0.05). On histopathological analysis, patients at the age of 40 years and below were identified in significantly high percentage with tumour grade III, 1-3 lymph node metastasis and hormone receptor negative type. Increasing age was associated with low tumour grade and less percentage of lymph node metastasis. Significantly high percentage of patients were presented with hormone receptor positive tumour (p<0.05). CONCLUSION: The contributing factors for breast carcinoma occurrence were related to life history and life-style of the patients. Medical insurance uncovered patients at initial diagnosis were presented in significantly high percentage with advanced disease including high tumour grade and lymph node metastasis due to less use of preventive and screening service which delays the diagnosis, effecting both survival and treatment cost.

Post-treatment Hematological Variations and the Role of Hemoglobin as a Predictor of Disease-free Survival in Stage 2 Breast Cancer Patients.

Objectives The primary objective of this study was to determine post-treatment variations in the hematological profile of stage 2 breast cancer patients and investigate the influence of disease stage and treatment pattern on these changes. The secondary objective was to evaluate the role of post-treatment hemoglobin as a predictor of disease-free survival. Methods This prospective, observational study included 177 stage 2, female, breast cancer patients. Treatment included surgery, chemotherapy, radiotherapy, and hormonal (anti-estrogen) therapy. Patients were divided into treatment groups based on their histopathological features. Laboratory investigations, including hemoglobin and complete blood count, were carried out twice, first, at the initial cancer diagnosis and, second, eight weeks after completion of radiotherapy. The patients were followed for a period of four years and their disease-free survival was calculated. Results A significant post-treatment decrease in hemoglobin levels and red blood cell (RBC) count was observed in all patients except hormone receptor-positive disease stage 2A patients treated without chemotherapy. Total leukocyte counts were significantly decreased in all hormone receptor-negative patients, and significant neutropenia was observed in all stage 2 patients who received chemotherapy. The severity of anemia was observed to be significantly lower in stage 2A patients (without lymph node metastasis) as compared to stage 2B patients (with lymph node metastasis). Furthermore, no anemia was observed in hormone receptor-positive patients treated without chemotherapy, while moderate anemia was observed in hormone receptor-negative patients who received both pre and post-surgical chemotherapy. The post-treatment hemoglobin levels were found to be a significant predictor of disease-free survival in hormone receptor-positive patients (HR = 0.140, p= 0.000) and in patients of all disease stages except stage 2B (T3 N1 M0). Conclusion  The incidence and severity of post-treatment anemia are low in patients treated with hormonal therapy and high in patients with lymph node metastasis. Higher post-treatment hemoglobin levels predict a longer duration of disease-free survival in hormone receptor-positive patients of disease stages 2A and 2B (T2).