American Journal of Biotechnology and Bioscience


Affordability Issues of Biotech Drugs in low- and middle-income countries (LMICs)

As indicated by World Bank publication Disease Control Priorities: Improving Health and Reducing Poverty (third edition, 2017), about 20% all out health use universally originated from out-of-pocket payments in 2014. The equivalent was about 40% all out health use for low-income countries, 56% for lower-middle-income countries, and 30% for upper-middle-income countries (WHO, 2016). 33% of the world’s populace needs opportune access to quality-guaranteed medicines while assessments demonstrate that in any event 10% of medicine in low-and middle-income countries (LMICs) are substandard or distorted, costing roughly US$ 31 billion every year (Global Health, 2018). Shockingly, 80% of worldwide cardiovascular passings happen in LMICs which is (halfway) because of the absence of access to healthcare including talented HR, equipped offices and medicines (Global status report on noncommunicable diseases, WHO, 2010). Cost of drugs, antibodies, and diagnostics is a noteworthy weight in LMICs round the globe. Cost of biotech drugs are much higher because of surprising expense caused by the pharmaceutical organizations for clinical preliminary. Biotech drugs have totally changed the administration of a few diseases, including malignant growth and immune system diseases. Albeit essential yet their affordability is as yet a consuming issue, particularly in LMICs.

Novel urease inhibitor

Urease, also known as urea amide hydrolase, contains two metal nickel ion active centers that catalyze the decomposition of urea to ammonia and carbon dioxide. Urease is widely found in nature, including plants, animals, and microorganisms, and greatly affects the utilization of nitrogen-containing nutrients by plants and animals. At the same time, its content can also affect the normal physiological metabolism of microorganisms, which in turn affects the survival rate of microorganisms. It can be seen that the role of urease inhibitors is very important. Urease inhibitors, such substances, can affect or even inhibit the activity of urease by direct or indirect means. Guided by computer-aided drug design, the team developed two new urease inhibitors, which are low-cost, non-toxic to plants, animals and humans, and environmentally friendly urease inhibitors. After experimentally measuring the activity of urease inhibitors, the two urease inhibitors have stronger inhibition ability than the widely used acetohydroxamic acid on the market.

CYTOTOXICITY ASSESSMENT AND ANTIMICROBIAL ACTION OF Caulerpa taxifolia (M. Vahl) C.

This study aims to determine the LC50 for Artemia salina Leach and perform a microbial screening two C. taxifolia extracts. In these biological assays have been used larvae of A. salina Leach ob-tained from the incubation of about 20 mg of A. salina cysts, under artificial light for 48 hours. Where groups of 10 metanauplius were exposed to different concentrations (50 mg / mL to 1000 ug / ml) of methanol extract and hydroalcoholic C. taxifolia . The antimicrobial activity of extracts of C. taxifolia was evaluated by diffusion method in paper disc. The percentage mortality deter-mined after 24 hours of contact. Through the data was calculated LC50. Behavioral analysis of Artemia salina Leach showed a decrease in handling compared to those observed in the control groups. The microbial activity of the extracts were evaluated by measuring the halo of inhibition for two species of gram-positive and two gram-negative bacteria. The extracts showed signifi-cant results for S. aureus and S. spp. This study demonstrates that C. taxifolia has a high cyto-toxicity suggested that its use in cell culture as a molluscicide and can be used in the production of production of antimicrobial drugs.

Influence of mercuric chloride and sodium hypochlorite on apical and axillary buds regeneration of Colocasia esculenta in tissue culture

Taro (Colocasia esculenta L. SCHOTT) is a staple food in many southern countries and an ancient starchy crop consumed by more than 400 million people. It is treated by diseases and pests that affect seed availability. Thus, the techniques of in vitro culture mostly used to overcome the problem of seeds production meet enormous difficulties of infection and necrosis of the explants. This study aims to determine the optimal use of mercuric chloride and sodium hypochlorite for disinfection of apical and axillary buds of taro. For this purpose, three doses of sodium hypochlorite (8%, 10% and 12%) and mercuric chloride (0.08%, 0.1% and 0.15%) were used with three immersion times ( 25 min, 30 min and 45 min) for sodium hypochlorite and (5min, 7min and 10min) for mercuric chloride. A binary logistic analysis was performed to understand or predict the effect of different doses of NaOCl and HgCl2 on the behavior of apical and axillary buds of taro. The results showed that 8% sodium hypochlorite with immersion time of 25 minutes is favorable for the disinfection of both apical and axillary explants of taro. For mercuric chloride, only the dose of 0.15% is effective for apical bud survival. The present study offers an opportunity to make available the seed of taro through the organogenesis of the species without any risk of infection.

Effects of system benzylaminopurine-adenine sulphate in combination with naphthalene acetic on in vitro regeneration and proliferation of pineapple (Ananas comosus (L.) Mill var. comosus)

In vitro micropropagation is now used in the production of healthy and homogenous pineapple planting materials. In order to increase the in vitro proliferation of pineapple, the synergetic effect of adenine sulphate (AdS) and benzylaminopurine (BAP) in presence or not of naphthalene acetic acid (NAA) was evaluated. Median axillary buds of crowns bursted 6 to 8 weeks old were cultured on Murashige and Skoog medium supplemented with BAP (0, 1 and 2 mg/l), NAA (0 and 0.5 mg/l) with or without AdS (40 mg/l). Five buds per treatment with four replicates were used. The addition of BAP to the medium stimulated regeneration (65 to 82%) and multiplication (3.04 to 6.13 plantlets/explant) which were further enhanced by the addition of NAA (98%; 6.42 plantlets/explant). AdS highly stimulated proliferation in presence of 2 mg/l BAP and NAA (14.96 plantlets/explant), plantlet mass (1.143g) but limited plantlet growth in height which was more induced in the absence of regulators (4.88 cm) and with AdS alone (5.63 cm). Thus, BAP is necessary for the proliferation of pineapple and the addition of 0.5 mg/l NAA to 2 mg/l BAP and 40 mg/l AdS optimizes the multiplication and growth parameters of pineapple plantlets. These results allow the mass propagation of pineapple’s homogeneous healthy planting materials.
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Dr. Jamunarani Veeraraghavan
Baylor College of Medicine, One Baylor Plaza, Houston, Texas

Dr. Moustafa M. Zeitoun
Professor, Department of Animal Production, Faculty of Agriculture, University of Alexandria, El-Shatby, Alexandria, Egypt; Department of Animal Production and Breeding, College of Agriculture and Veterinary Medicine, Qassim University

Dr. K.S. Kanwal
Scientist-C, G.B. Pant National Institute of Himalayan Environment and Sustainable Development, North East Unit, Vivek Vihar, Itanagar-791113, Arunachal Pradesh, India

Dr. Surabhi Mishra
Resarch Scientist, Dept. of Microbiology, University of Iowa, IA – 52242

Dr. Miriam-Rose Menezes
UTHealth Science Center Houston

Dr. Yan Zhou
Harvard Medical School, Boston, USA

Dr. Richa Madan Lomash
Research Fellow, Receptor Biology Unit (NINDS), NIH, Bethesda (MD), USA

Dr. FRANCESCA DIOMEDE
Department of Medical, Oral and Biotechnological Sciences, University G. d’Annunzio, Chieti-Pescara, Via dei Vestini, 31, 66100 Chieti (IT)

Dr. Sirisha Adamala
Assistant Professor, Department of Applied Engineering, Vignan’s University

Dr. Abhishek Naik
Area Manager, Technology development department

Dr. Moustafa Mohamed Sabry Bakry
Plant Protection Research Institute Agricultural Research Center, Giza, Egypt

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1.R. M. AKPLOGAN, G. H. T. CACAÏ, S. S. HOUEDJISSIN, V.MÈGNIKPA, C. AHANHANZ.Influence of mercuric chloride and sodium hypochlorite on apical and axillary buds regeneration of Colocasia esculenta in tissue culture. American Journal of Biotechnology and Bioscience, 2018; 2:10. DOI: 10.28933/ajbb-2018-11-1908 
2.Bienvenu T. Badou, Arnaud Agbidinoukoun, Gilles T.H. Cacaï, René C. Dossoukpèvi and Corneille Ahanhanzo. Effects of system benzylaminopurine-adenine sulphate in combination with naphthalene acetic on in vitro regeneration and proliferation of pineapple (Ananas comosus (L.) Mill var. comosus). American Journal of Biotechnology and Bioscience, 2018; 2:9.. DOI: 10.28933/ajbb-2018-05-1801 

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American Journal of Biotechnology and Bioscience

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