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Early detection of neuropathy in leprosy:a comparison of five tests for field settings

Infectious Diseases of Poverty 2017年第1期6卷 1034-1042页

作者： Inge Wagenaar Erik Post Wim Brandsma Dan Ziegler Moshiur Rahman Khorshed Alam Jan Hendrik Richardus Department of Public Health Erasmus MCRotterdamThe Netherlands KIT Health Royal Tropical InstituteAmsterdamThe Netherlands Independent leprosy consultant AmsterdamThe Netherlands Institute for Clinical Diabetology German Diabetes Center at Heinrich Heine UniversityLeibniz Center for Diabetes ResearchDusseldorfGermany Department of Endocrinology and Diabetology Medical FacultyHeinrich Heine UniversityDüsseldorfGermany Rural Health Program The Leprosy Mission International-BangladeshNilphamariBangladesh

Background:Early detection and treatment of neuropathy in leprosy is important to prevent disabilities.A recent study showed that the Nerve Conduction Studies(NCS)and Warm Detection Thresholds(WDT)tests can detect leprosy neuropathy the *** two tests are not practical under field conditions,however,because they require climate-controlled rooms and highly trained staff and are *** assessed the usefulness of alternative test methods and their sensitivity and specificity to detect neuropathy at an early ***:Through a literature search we identified five alternative devices that appeared user-friendly,more affordable,portable and/or battery-operated:the Neuropad^(■),Vibratip^(TM),NC-Stat^(■)DPNCheck^(TM),NeuroQuick and the Thermal Sensibility Tester(TST),assessing respectively sweat function,vibration sensation,nerve conduction,cold sensation and warm *** leprosy patients in Bangladesh,the posterior tibial and sural nerves that tested normal for the monofilament test and voluntary muscle test were assessed with the NCS and WDT as reference standard *** alternative devices were then tested on 94 nerves with abnormal WDT and/or NCS results and on 94 unaffected *** and specificity were the main ***:The NeuroQuick and the TST showed very good sensitivity and *** the sural nerve,the NeuroQuick had both a sensitivity and a specificity of 86%.The TST had a sensitivity of 83%and a specificity of 82%.Both the NC-Stat^(■)DPNCheck^(TM)and Vibratip^(TM)had a high specificity(88%and 100%),but a low sensitivity(16%and 0%).On the posterior tibial nerve,the NeuroQuick and the TST also showed good sensitivity,but the sensitivity was lower than for the sural *** Neuropad^(■)had a sensitivity of 56%and a specificity of 61%.Conclusions:The NeuroQuick and TST are good candidates for further field-testing for reliability and *** feasibility of production on a larger scale should be exami

关键词： Leprosy Neuropathy Detection Subclinical field use

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Detection of Environmental Toxins in Mixed Matrices of Tap Water, Soil, Food Waste, Serum and Milk Using Hememics Biosensor

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Journal of Sensor Technology 2023年第4期13卷 59-68页

作者： Srivatsa Aithal Sujasha Gupta Khanh Duong Ankit Kumar Nathan Ho Dongdong Liu John Warden David Huy Ho Hememics Biotechnologies Inc Gaithersburg USA

Exposure to toxins can lead to a wide range of adverse health effects, including respiratory problems, neurological disorders, cancer, and reproductive issues. Toxins can come from various sources, such as industrial waste, agricultural runoff, and household chemicals. Therefore, detecting and monitoring toxins in the environment is crucial for protecting human health and the environment. This study aimed to evaluate the performance of Hememics biosensor system in detecting environmental toxins such as Ricin and Staphylococcal enterotoxin B (SEB) in mixed matrixes. When Ricin and SEB are spiked into soil, chopped lettuce, tap water, milk and serum, the biosensor was able to detect these toxins, without sample processing, at a level of detection comparable to lab testing with high sensitivity and specificity. Furthermore, Hememics biosensor system is designed to be network-enabled, which means that results can be transmitted to relevant agencies for quick decisions. This feature is crucial in cases where quick action is needed to prevent further contamination or exposure to harmful toxins.

关键词： Portable Biosensor Graphene Based Biochip HemChip™ Rapid Detection field use Networking

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