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“Sleeping sickness, or human African trypanosomiasis, is a vector-borne disease caused by two subspecies of the protozoan parasite Trypanosoma brucei, and is geographically restricted to sub-Saharan Africa. Although the disease causes major public-health and socioeconomic problems among affected populations, sleeping sickness is one of the world’s most neglected diseases. Within the rapidly evolving field of biotechnology, many molecular diagnostics have been developed to detect the parasite. These

range from conventional, high-tech, and low-tech PCR formats (eg, isothermal nucleic-acid-amplification techniques), to direct visualisation of the parasite’s nucleic acids by fluorescent probes. Besides reviewing the most important molecular diagnostics available, we discuss their current role selleck chemicals llc in diagnosis and disease control. Although powerful, molecular diagnostics are confined to research settings and do not reach the patient or national control programmes. The current formats are not applicable to field conditions, and simplification, standardisation, and proper test evaluation in the target setting should be the main focus for future development.”
“BACKGROUND: During slaughter a hog produces approximately 3 L of blood. However, only a small proportion of porcine blood is currently used in food, feed or fertiliser, most of it being

treated as waste and discarded. In this study the possibility Selleckchem Anlotinib of hydrolysing porcine blood proteins by enzyme in a membrane reactor

for the production of bioactive peptides was investigated. Red blood corpuscles, blood plasma and defibrinated blood plasma were hydrolysed by various proteases, and the hydrolysates were evaluated for bioactive properties.\n\nRESULTS: The hydrolysate produced by hydrolysing red blood corpuscles with a mixture of trypsin, chymotrypsin and thermolysin had the highest angiotensin I-converting enzyme (ACE)-inhibitory activity (IC50 Elacridar cost = 0.58 mg mL(-1)) and scavenging effect on alpha,alpha-diphenyl-beta-picrylhydrazyl (DPPH) (65%) after 6 and 10 h of hydrolysis respectively. When the hydrolysis was carried out in an enzymatic membrane reactor with an enzyme/substrate ratio of 1:5 and a residence time of 100 min, the process reached steady state in 2 h. The ACE-inhibitory activity of the product during the steady state process was 86% and its scavenging effect on DPPH was 54%. The membrane process also decolourised the enzyme-hydrolysed product, thus improving the appearance of the product.\n\nCONCLUSION: This study demonstrated that hydrolysates of porcine blood possess anti hypertensive and antioxidant activities. Using red blood corpuscles as the substrate, the hydrolysis could be carried out in a membrane reactor with a mixture of proteases to produce bioactive peptides continuously. Therefore processing of porcine blood in an enzymatic membrane reactor is a potential method for producing a health-promoting product.