In the fields of medication, biotechnology and pharmacology, drug disclosure is the cycle by which new up-and-comer prescriptions are found. Generally, drugs were found by recognizing the dynamic fixing from customary cures or by fortunate revelation, similarly as with penicillin. All the more as of late, compound libraries of engineered little particles, characteristic items or concentrates were separated flawless cells or entire living beings to distinguish substances that had an alluring helpful impact in an interaction known as traditional pharmacology. In the wake of sequencing of the human genome permitted quick cloning and blend of huge amounts of refined proteins, it has become normal practice to utilize high throughput screening of huge mixtures libraries against disengaged natural targets which are conjectured to be sickness altering in an interaction known as opposite pharmacology. Hits from these screens are then tried in cells and afterward in creatures for viability.
Background: Use of microorganisms for the synthesis of metal nanoparticles is in the limelight of modern nanotechnology. It is emerges as an ecofriendly and exciting approach, for production of nanoparticles due to its low energy requirement, environmental compatibility, reduced costs of manufacture, scalability and nanoparticle stabilization compared with the physical and chemical synthesis. Biologically synthesized metal nanoparticles are the most efficient miniaturized functional materials that are constructed and engineered to exert specific functions with enormous ability. Methods: Microorganisms have this extraordinary capacity to form such exquisite nanostructures. This research work reports the biological synthesis of zinc oxide and lead nitrate nanoparticles by using microbes. Microbes play direct or indirect roles in several biological activities because metals present on earth are in constant association with biological components. Discussion: In the present study, reported microbial synthesis of nanomaterials utilizes of biological components, primarily prokaryotes and eukaryotes such as bacteria and fungi (Escherichia coli, Aspergillus niger). Both bacterial and fungal cell mass were challenged with two different chemical salts (ZnO, Pb(NO3)2) and metal nanoparticles were synthesized effectively. Furthermore, the antimicrobial potential of zinc and lead nanoparticles was systematically evaluated. Results: The synthesized nanoparticles could efficiently inhibit various pathogenic organisms, P. aeruginosa and S. aureus. The bactericidal effect of zinc and lead nanoparticles were compared based on diameter of inhibition zone in agar diffusion assay, disc method tests and Minimum Inhibitory Concentration (MIC).
Plants bioactive components protect human from heavy metal-induced toxicities. This study investigated the protective effect of the methanol leaf extract of Holarrhena floribunda (MLEHF) against arsenate-induced toxicity in male Wistar rats. Animals were pre-treated with two doses of the extract (100 and 200 mg/kg body weight (b.w)) for 14 days before intraperitoneally exposure to sodium arsenide (5 mg/kg b.w.) 24 hr after the last administration. Serum TNF-α, urea and Creatinine levels were evaluated. Also, total protein (TP), reduced glutathione (GSH), malondialdehyde (MDA), lipid hydro peroxides (LHP), glutathione peroxidase (GPx) and superoxide dismutase (SOD) were estimated in rat spleen, testis and heart. The result showed that arsenate only triggers a significant increase in serum TNF-α, urea and Creatinine. Also, arsenate induced significant increase (P<0.05) in cardiac, testicular and splenic lipid peroxidation (MDA and LHP) levels. Contrarily, arsenate reduced significantly (P<0.05) heart and testis GSH SOD and GPx activities compared with un-exposed control. MLEHF prevented the disgruntled influence of arsenate on the levels of serum TNF-α, urea and Creatinine, and the activities of GSH, SOD and GPx in the testis and heart of rats. The extract also reversed the arsenate-induced increase in cardiac, testicular and splenic lipid peroxidation (MDA and LHP). The protective ability of the extract may be linked to polyphenolic compounds in the leaf extract.
Clinical trails are a kind of examination that reviews new tests and medicines and assesses their consequences for human wellbeing results. Individuals volunteer to take part in clinical trails to test clinical interventions including medications, cells and other biological products, surgeries, radiological strategies, devices, behavioural treatments and preventive consideration. Clinical preliminaries are painstakingly planned, evaluated and finished, and should be endorsed before they can begin. Anybody can participate in clinical trails including children..
Ebola virus is one of the maximum lethal pathogens recognized to contaminate people. The current Ebola outbreak in West Africa is unheard of in magnitude and duration and, as of November 30, 2014, indicates no signs and symptoms of abating. For the primary time, cases of Ebola virus ailment have been recognized in the US, originating from sufferers who travelled at some point of the incubation period. The outbreak has generated international problems. Ebola virus ailment is a severe and frequently deadly ailment as a result of the Ebola virus (EBOV). EVD outbreaks normally begin from an unmarried case of in all likelihood zoonotic transmission, observed utilizing human-to-human transmission through direct touch or contact with inflamed physical fluids or contaminated virus. EVD has a high case–fatality fee; it's far characterized through fever, gastrointestinal signs and more than one organ dysfunction syndrome. Diagnosis requires a mixture of case definition and laboratory exams, usually actual-time reverse transcription PCR to stumble on viral RNA or speedy diagnostic checks based totally on immunoassays to hit upon EBOV antigens. The results of a randomized scientific trial of investigational therapeutics for EVD proved survival benefits from two monoclonal antibody merchandise concentrated on the EBOV membrane glycoprotein. EVD is currently one of the international's most feared diseases. In this literature evaluation, we describe the epidemiology, scientific features, diagnosis, and remedy of EVD.
Nowadays various models are available to evaluate anxiolytics effect of a new entity or even for comparative studies with the standard drug. Animal models are very useful to understand the pathogenesis of the disease and also helpful in finding the treatment of the particular disease. As per the ethics, a new compound or drug believes to have possible pharmacological effect should be tested on animals before tested on humans which have similar physiology than humans. Anxiolytics are the agent which are used to elevate anxiety effect produced due to any cause. Whenever a new drug believes to have a possible pharmacological response, an animal model is developed to verify the effect of the drug which study is also known as a preclinical study. First, rats were used as an animal model for evaluation of anti-anxiety drug but later on the various strain of mice were added to an animal model for evaluation of anxiolytics because of better genetic possibilities than rats. In this review article, we have discussed the most commonly used four animal models used to evaluate the anti-anxiety effect. The various parameter will be undertaken for the better and precise evaluation of anxiolytics. Behavioral studies can also be conducted with the help of some animal models used to evaluate the anti-anxiety effect.
Cardiovascular disease including coronary illness, arrhythmias and hypertension, is the main source of morbidity and mortality in the Western world. There are various decimating conditions influencing the heart as well as the vasculature, prompting appeal for cardiovascular medications..
The global market value for toxicology testing is estimated to reach $5.1 billion by 2020, as it upsurges at a five-year CAGR of 15.4%. Currently, it clenches nearly 30 percent share in the global toxicology testing market. North America credits largest share of over 40% revenue, subsequently Europe with 30% market share. Over 99% of usage in the given market is seen in the three main areas, namely ADME, safety pharmacology, and genotoxicity.
Background: There is a growing interest in the medicinal value of extracts of Ocimum gratissimum plant. However, there is scanty data on the toxicity of extracts of this plant in experimental animals. Objective: This study was aimed at evaluating the safety and the effects on organs of crude leaf extracts of Ocimum gratissimum in normoglycaemic and diabetic rats. Methods: Freshly prepared leaf extracts of Ocimum gratissimum was admininstered on normoglycaemic and neonatal strptozotocine induced diabetic (n-STZ) rats.The animals were observed daily for clinical signs of toxicity throughout the period of study. At the end of the study, the animals were sacrificed after ether anesthesia. The kidneys, liver and a length of intestine were removed and examined for any pathologic changes due to treatment with the extract. Result: At the extract dose of 200mg /Kg body weight, no significant change was observed in all the biochemical parameters evaluated in the two groups following treatment with extract. Biochemical parameters were also similar in the normal and n-STZ rats. Sections of the small intestinal tissues of the animals treated with the aqueous extract showed enlarged intestinal Villi with nonspecific chronic inflammatory cell infiltration of the fibrovascular core. The liver tissues showed signs of mild to moderate vascular congestion which is otherwise unremarkable. Conclusion: At the therapeutic dose used in this study the leaf extracts of Ocimum gratissimum appears to have no significant organ toxicity.
Antineoplastic drugs are well known for their abilities to induce varying degrees of toxicities and predispose to cardiovascular related disease states. This study, therefore evaluates the effects of Doxorubicin (Dox) (3 mg/kg body weight) and Etoposide (Etop) (3 mg/kg body weight) alone and in combinations at 12 and 24 h intervals on plasma lipid profiles and paraoxonase-1. Lipid peroxidation, superoxide dismutase (SOD), glutathione peroxidase (Gpx) and reduced glutathione (GSH) in selected male rat organs were also evaluated. The results were analyzed using One-way ANOVA followed by post hoc tests. Hypocholesterolemia characterized the effects of Etop alone and in combination with Dox at 12 h, while at 24 h interval hypercholesterolemia was observed in the combined group. Both drugs induced significant hypertriglyceridemia except at 12 h combination with significant hypotriglyceridemia. Individually, the drugs significantly reduced HDL-cholesterol (HDL-C) contrarily to up-regulation when combined. HDL-triacylglycerol, phospholipids and paraoxonase- 1 activities were significantly reduced in all the treated groups, compared with the control. Dox markedly elevated lipid peroxidation in liver and heart, but repressed by Etoposide in the heart and erythrocyte. In combination, Etop at both time intervals ameliorated Dox-induced lipid peroxidation. All treatments elicited significant reduction in liver and erythrocyte GSH levels except heart with significant increase. The treatments significantly depressed hepatic SOD activities while moderating GPx activities in all the organs studied. This study shows that the derangements in the lipid profile are a common factor for the potential of the both drugs to predispose to cardiovascular diseases than the observed antioxidant status.
Subclinical hypothyroidism (SCH) refers to the serum thyrotropin (or TSH) concentration above the reference range with normal serum free levothyroxine (fT4). The leading cause for raised thyrotropin concentration in SCH is not due to iodine deficiency but rather due to excessive intake of iodine that results in the development of anti-TPO antibodies towards thyroid peroxidase enzyme. Most common symptoms reported are muscle cramps, slowness of thinking, throat harshness and constipation. Most of the clinicians believe that those individuals having thyrotrophic concentration greater than 10 mIU/L should undergo the treatment of levothyroxine (LT4). The results of many epidemiological studies states that, greater the concentration of Anti-Thyroperoxidase antibodies then greater the susceptibility of having overt hypothyroidism in SCH individuals.
An effective therapeutic agent is essential for the control of many infectious diseases which can predict for the present time social and economic high costs. Ertapenem sodium (ERTM) is a synthetic antimicrobial agent of the class of carbapenems that have action against Gram-negative, Gram-positive, aerobic and anaerobic microorganisms. The lack of new effective antibiotics against multidrug-resistant pathogens is a constant concern. The progress of resistance to carbapenems is an alarming problem, since those are considered one of the most important drugs for the treatment of severe infections caused by enterobacteria. Thus, it is necessary to investigate the changes in the pharmacological profile of carbapenems. Microbiological methods are required for an antimicrobial effectiveness evaluation. In turbidimetric assay, the potency of a drug is determined by measuring the turbidity (absorbance), caused by the inhibition of microorganisms. This study presents an efficient, accurate, reproducible, low cost and microbiological assay which is highly relevant in the pharmaceutical industry to quantify ertapenem sodium. For performing the method, Staphylococcus aureus (ATCC 26923) was used as the test microorganism and the culture medium chosen was the Brain Heart Infusion broth as the BHI. Validation parameters were in accordance with the specifications of ICH and demonstrated accuracy, precision, selectivity and robustness, with linear tracks 12.80; 16.00 and 20.00 μg mL-1. The turbidimetric assay is more versatile, faster and easier to apply than agar diffusion one. The method is simple and can be used in routine analysis of quality control of ertapenem sodium in the pharmaceutical industry.
Alzheimer’s disease (AD) is recognized as the most prevalent form of dementia or mental deterioration, which is associated with the permanent loss of neurons specifically in Cortex and Hippocampus. According to the World Alzheimer’s Report, there were an estimated 46.8 million people worldwide living with dementia in 2015 and this number is believed to be close to 50 million people in 2018. These numbers will almost double every 20 years, reaching 75 million in 2030 and 131.5 million in 2050 [1,2]. Clinically, the AD is diagnosed by progressive impairment in memory, judgment, decision making, orientation to physical surroundings, and language. In spite of vast research, presently no treatment could be developed to fully cure or prevent the progression of dementia because the mechanism of the AD has not been fully understood. Available treatments are only symptomatic, with a temporary effect, and without halting the progression of the disease [3,4]. For instance, Phase III trials of nonsteroidal anti-inflammatory drugs (NSAIDs), phenserine, statins, tarenflurbil, tramiprosate, Ginkgo biloba, and xaliproden have been completed. However, none of them has demonstrated a significant efficacy. Currently, available diagnostic approaches have failed to understand the correct mechanism of the AD. Furthermore, deterioration of cognitive, motor, emotional and sensory functions drastically affecting the social and behavioral skills of people living with this disease. Hence, it becomes important to fully understand the molecular mechanism of AD pathogenesis that can help to identify therapeutic targets to reduce cognitive decline and/or improve memory function [5,6].
