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https://www.readbyqxmd.com/read/29774292/evaluation-of-phytosynthesised-silver-nanoparticles-from-leaf-extracts-of-leucas-aspera-and-hyptis-suaveolens-and-their-larvicidal-activity-against-malaria-dengue-and-filariasis-vectors
#1
Devan Elumalai, Maduraiveeran Hemavathi, Chandrasekar Vijayalakshmi Deepaa, Patheri Kunyil Kaleena
The present study deals with the green synthesis of silver nanoparticle from the aqueous leaf extracts of Leucas aspera and Hyptis suaveolens as reducing agent and to investigate the larvicidal activity of synthesized silver nanoparticles. The synthesized silver nanoparticles were characterized by Ultraviolet and visible absorption spectroscopy (UV), Fourier transform-infrared spectroscopy (FT-IR), X-ray spectroscopy (XRD), Field emission scanning electron microscope (FESEM) and High-resonance transmission electron microscopy (HRTEM) analysis...
November 2017: Parasite Epidemiology and Control
https://www.readbyqxmd.com/read/29774286/biological-control-of-anopheles-darlingi-aedes-aegypti-and-culex-quinquefasciatus-larvae-using-shrimps
#2
Willian Marinho Dourado Coelho, Juliana de Carvalho Apolinário Coêlho, Katia Denise Saraiva Bresciani, Wilma Aparecida Starke Buzetti
Mosquitoes can act as vectors of important diseases such as malaria, dengue, Zika virus, yellow fever, Chikungunya and Mayaro fever, in addition to filariasis. The use of insecticides, larvicides, bed nets and repellents, besides the use of drugs as chemoprevention and the treatment of the sick are currently the pillars of the control of these vectors. We studied the biological control against of Anopheles darlingi , Aedes aegypti and Culex quinquefasciatus larvae using shrimps of the species M. pantanalense , M...
August 2017: Parasite Epidemiology and Control
https://www.readbyqxmd.com/read/29761622/host-heme-oxygenase-1-friend-or-foe-in-tackling-pathogens
#3
REVIEW
Nisha Singh, Zeeshan Ahmad, Navin Baid, Ashwani Kumar
Infectious diseases are a major challenge in management of human health worldwide. Recent literature suggests that host immune system could be modulated to ameliorate the pathogenesis of infectious disease. Heme oxygenase (HMOX1) is a key regulator of cellular signaling and it could be modulated using pharmacological reagents. HMOX1 is a cytoprotective enzyme that degrades heme to generate carbon monoxide (CO), biliverdin, and molecular iron. CO and biliverdin (or bilirubin derived from it) can restrict the growth of a few pathogens...
May 14, 2018: IUBMB Life
https://www.readbyqxmd.com/read/29758050/an-assessment-of-false-positive-rates-for-malaria-rapid-diagnostic-tests-caused-by-non-plasmodium-infectious-agents-and-immunological-factors
#4
Michelle L Gatton, Sadmir Ciketic, John W Barnwell, Qin Cheng, Peter L Chiodini, Sandra Incardona, David Bell, Jane Cunningham, Iveth J González
BACKGROUND: Malaria rapid diagnostic tests (RDTs) can produce false positive (FP) results in patients with human African trypanosomiasis and rheumatoid factor (RF), but specificity against other infectious agents and immunological factors is largely unknown. Low diagnostic specificity caused by cross-reactivity may lead to over-estimates of the number of malaria cases and over-use of antimalarial drugs, at the cost of not diagnosing and treating the true underlying condition. METHODS: Data from the WHO Malaria RDT Product Testing Programme was analysed to assess FP rates of 221 RDTs against four infectious agents (Chagas, dengue, Leishmaniasis and Schistosomiasis) and four immunological factors (anti-nuclear antibody, human anti-mouse antibody (HAMA), RF and rapid plasma regain)...
2018: PloS One
https://www.readbyqxmd.com/read/29744330/splenic-hematoma-mimicking-rupture-uterus-a-diagnostic-dilemma
#5
Vishnu Bhartiya, Richa Sharma
Spontaneous splenic hematoma occurring during pregnancy is a rare entity. It often occurs in preexisting pathology of the spleen such as thalassemia or infectious etiologies such as malaria, typhoid, dengue, or infectious mononucleosis but most commonly after a trauma. The occurrence of splenic hematoma during pregnancy without any underlying cause is rare. Here, we present such a case and the diagnostic dilemma associated with it.
April 2018: International Journal of Applied and Basic Medical Research
https://www.readbyqxmd.com/read/29718912/microrna-profiles-and-functions-in-mosquitoes
#6
Xinyu Feng, Shuisen Zhou, Jingwen Wang, Wei Hu
Mosquitoes are incriminated as vectors for many crippling diseases, including malaria, West Nile fever, Dengue fever, and other neglected tropical diseases (NTDs). microRNAs (miRNAs) can interact with multiple target genes to elicit biological functions in the mosquitoes. However, characterization and function of individual miRNAs and their potential targets have not been fully determined to date. We conducted a systematic review of published literature following PRISMA guidelines. We summarize the information about miRNAs in mosquitoes to better understand their metabolism, development, and responses to microorganisms...
May 2, 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29706314/dengue-haemorrhagic-fever-an-emerging-disease-in-nigeria-west-africa
#7
REVIEW
Ademola Hezekiah Fagbami, Anyebe Bernard Onoja
INTRODUCTION: In Nigeria, dengue fever caused by dengue virus, types 1 and 2 has been diagnosed for many years. Although, seroepidemiological surveys have shown that dengue virus activity is, widespread in the country, there is scanty information on dengue, hemorrhagic fever with little attention paid to dengue fever largely, because it presents as classical dengue fever characterized by fever, myalgia, headache, arthralgia, retro-orbital pain, gastro intestinal, symptoms and skin rash...
April 26, 2018: Journal of Infection and Public Health
https://www.readbyqxmd.com/read/29689660/pathogen-insect-interaction-candidate-molecules-for-transmission-blocking-control-strategies-of-vector-borne-diseases
#8
REVIEW
Federico Alonso Zumaya-Estrada, María Carmen Rodríguez, Mario Henry Rodríguez
OBJECTIVE: To analyze the current knowledge of pathogen-insect interactions amenable for the design of molecular-based control strategies of vector-borne diseases. MATERIALS AND METHODS: We examined malaria, dengue, and Chagas disease pathogens and insect molecules that participate in interactions during their vectors infection. RESULTS: Pathogen molecules that participate in the insect intestine invasion and induced vector immune molecules are presented, and their inclusion in transmission blocking vaccines (TBV) and in genetically modify insect (GMI) vectors or symbiotic bacteria are discussed...
January 2018: Salud Pública de México
https://www.readbyqxmd.com/read/29672709/surveillance-of-travel-associated-diseases-at-two-referral-centres-in-marseille-france-a-12-year-survey
#9
Karolina M Griffiths, Hélène Savini, Philippe Brouqui, Fabrice Simon, Philippe Parola, Philippe Gautret
Background: With increasing international travel and historically high numbers of residents visiting friends and relatives overseas, travel-associated illnesses are frequent in Marseille, France. We report the changing epidemiology of travel-related illnesses over a 12-year period. Methods: A single site GeoSentinel surveillance analysis was undertaken for 3460 ill returned travellers presenting to two public hospitals in Marseille, France from March 2003 to October 2015, with travel-related illnesses...
January 1, 2018: Journal of Travel Medicine
https://www.readbyqxmd.com/read/29671907/a-comprehensive-review-of-phytochemical-profile-bioactives-for-pharmaceuticals-and-pharmacological-attributes-of-azadirachta-indica
#10
REVIEW
Sumaira Saleem, Gulzar Muhammad, Muhammad Ajaz Hussain, Syed Nasir Abbas Bukhari
Azadirachta indica L. is a multipurpose medicinal tree of family Meliaceae. It occurs in tropical and semitropical regions of the world. Different parts of this miraculous tree are used to treat pyrexia, headache, ulcer, respiratory disorders, cancer, diabetes, leprosy, malaria, dengue, chicken pox, and dermal complications. The tree is popular for its pharmacological attributes such as hypolipidemic, antifertility, microbicidal, antidiabetic, anti-inflammatory, hepatoprotective, antipyretic, hypoglycemic, insecticidal, nematicidal, antiulcer, antioxidant, neuroprotective, cardioprotective, and antileishmaniasis properties...
April 19, 2018: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/29642937/evaluation-of-a-simple-polytetrafluoroethylene-ptfe-based-membrane-for-blood-feeding-of-malaria-and-dengue-fever-vectors-in-the-laboratory
#11
Doreen J Siria, Elis P A Batista, Mercy A Opiyo, Elizangela F Melo, Robert D Sumaye, Halfan S Ngowo, Alvaro E Eiras, Fredros O Okumu
BACKGROUND: Controlled blood-feeding is essential for maintaining laboratory colonies of disease-transmitting mosquitoes and investigating pathogen transmission. We evaluated a low-cost artificial feeding (AF) method, as an alternative to direct human feeding (DHF), commonly used in mosquito laboratories. METHODS: We applied thinly-stretched pieces of polytetrafluoroethylene (PTFE) membranes cut from locally available seal tape (i.e. plumbers tape, commonly used for sealing pipe threads in gasworks or waterworks)...
April 11, 2018: Parasites & Vectors
https://www.readbyqxmd.com/read/29625787/tropical-diseases-in-the-icu-a-syndromic-approach-to-diagnosis-and-treatment
#12
Dilip R Karnad, Guy A Richards, Gisele Sampaio Silva, Pravin Amin
Tropical infections form 20-30% of ICU admissions in tropical countries. Diarrheal diseases, malaria, dengue, typhoid, rickettsial diseases and leptospirosis are common causes of critical illness. Overlapping clinical features makes initial diagnosis challenging. A systematic approach involving (1) history of specific continent or country of travel, (2) exposure to specific environments (forests or farms, water sports, consumption of exotic foods), (3) incubation period, and (4) pattern of organ involvement and subtle differences in manifestations help in differential diagnosis and choice of initial empiric therapy...
March 27, 2018: Journal of Critical Care
https://www.readbyqxmd.com/read/29619364/harnessing-big-data-for-communicable-tropical-and-sub-tropical-disorders-implications-from-a-systematic-review-of-the-literature
#13
Vincenza Gianfredi, Nicola Luigi Bragazzi, Daniele Nucci, Mariano Martini, Roberto Rosselli, Liliana Minelli, Massimo Moretti
Aim: According to the World Health Organization (WHO), communicable tropical and sub-tropical diseases occur solely, or mainly in the tropics, thriving in hot, and humid conditions. Some of these disorders termed as neglected tropical diseases are particularly overlooked. Communicable tropical/sub-tropical diseases represent a diverse group of communicable disorders occurring in 149 countries, favored by tropical and sub-tropical conditions, affecting more than one billion people and imposing a dramatic societal and economic burden...
2018: Frontiers in Public Health
https://www.readbyqxmd.com/read/29617280/oropouche-fever-a-review
#14
REVIEW
Hercules Sakkas, Petros Bozidis, Ashley Franks, Chrissanthy Papadopoulou
Oropouche fever is an emerging zoonotic disease caused by Oropouche virus (OROV), an arthropod transmitted Orthobunyavirus circulating in South and Central America. During the last 60 years, more than 30 epidemics and over half a million clinical cases attributed to OROV infection have been reported in Brazil, Peru, Panama, Trinidad and Tobago. OROV fever is considered the second most frequent arboviral febrile disease in Brazil after dengue fever. OROV is transmitted through both urban and sylvatic transmission cycles, with the primary vector in the urban cycle being the anthropophilic biting midge Culicoides paraensis ...
April 4, 2018: Viruses
https://www.readbyqxmd.com/read/29593941/dynamics-of-zika-virus-outbreaks-an-overview-of-mathematical-modeling-approaches
#15
Anuwat Wiratsudakul, Parinya Suparit, Charin Modchang
Background: The Zika virus was first discovered in 1947. It was neglected until a major outbreak occurred on Yap Island, Micronesia, in 2007. Teratogenic effects resulting in microcephaly in newborn infants is the greatest public health threat. In 2016, the Zika virus epidemic was declared as a Public Health Emergency of International Concern (PHEIC). Consequently, mathematical models were constructed to explicitly elucidate related transmission dynamics. Survey Methodology: In this review article, two steps of journal article searching were performed...
2018: PeerJ
https://www.readbyqxmd.com/read/29588452/monitoring-the-age-of-mosquito-populations-using-near-infrared-spectroscopy
#16
Ben Lambert, Maggy T Sikulu-Lord, Vale S Mayagaya, Greg Devine, Floyd Dowell, Thomas S Churcher
Mosquito control with bednets, residual sprays or fumigation remains the most effective tool for preventing vector-borne diseases such as malaria, dengue and Zika, though there are no widely used entomological methods for directly assessing its efficacy. Mosquito age is the most informative metric for evaluating interventions that kill adult mosquitoes but there is no simple or reliable way of measuring it in the field. Near-Infrared Spectroscopy (NIRS) has been shown to be a promising, high-throughput method that can estimate the age of mosquitoes...
March 27, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29582731/vector-borne-disease-is-a-common-cause-of-hospitalized-febrile-illness-in-india
#17
Matthew L Robinson, Dileep Kadam, Sandhya Khadse, Usha Balasubramanian, Priyanka Raichur, Chhaya Valvi, Ivan Marbaniang, Savita Kanade, Jonathan Sachs, Anita Basavaraj, Renu Bharadwaj, Anju Kagal, Vandana Kulkarni, Jonathan Zenilman, George Nelson, Yukari C Manabe, Aarti Kinikar, Amita Gupta, Vidya Mave
Acute febrile illness (AFI) is a major cause of morbidity and mortality in India and other resource-limited settings, yet systematic etiologic characterization of AFI has been limited. We prospectively enrolled adults ( N = 970) and children (age 6 months to 12 years, N = 755) admitted with fever from the community to Sassoon General Hospital in Pune, India, from July 2013 to December 2015. We systematically performed a standardized clinical history, clinical laboratories, and diagnostics. Results from additional testing ordered by treating clinicians were also recorded...
March 26, 2018: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29581051/febrile-illness-in-asia-gaps-in-epidemiology-diagnosis-management-for-informing-health-policy
#18
REVIEW
Poojan Shrestha, Tamalee Roberts, Anousin Homsana, Tin Ohn Myat, John A Crump, Yoel Lubell, Paul N Newton
BACKGROUND: There is increasing evidence on the aetiology and management of fevers in Asia, the importance of which has risen with declines in malaria incidence. AIMS: To conduct a narrative review of the epidemiology and management of fevers in South and South-East Asia and to highlight gaps in our knowledge that impair evidence-based health policy decisions. SOURCES: A narrative review of papers published since 2012 of developments in fever epidemiology, diagnosis and treatment in South and South-East Asia...
March 23, 2018: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/29538490/successes-and-failures-of-sixty-years-of-vector-control-in-french-guiana-what-is-the-next-step
#19
Yanouk Epelboin, Sarah C Chaney, Amandine Guidez, Nausicaa Habchi-Hanriot, Stanislas Talaga, Lanjiao Wang, Isabelle Dusfour
Since the 1940s, French Guiana has implemented vector control to contain or eliminate malaria, yellow fever, and, recently, dengue, chikungunya, and Zika. Over time, strategies have evolved depending on the location, efficacy of the methods, development of insecticide resistance, and advances in vector control techniques. This review summarises the history of vector control in French Guiana by reporting the records found in the private archives of the Institute Pasteur in French Guiana and those accessible in libraries worldwide...
March 12, 2018: Memórias do Instituto Oswaldo Cruz
https://www.readbyqxmd.com/read/29538263/emergency-medicine-providers-knowledge-and-management-of-pediatric-tropical-diseases-a-needs-assessment
#20
Vanessa A Thomas, Heather L Crouse, Kristy O Murray, Deborah C Hsu, Elizabeth A Camp, Andrea T Cruz
OBJECTIVE: The aim of this study was to perform a needs assessment of pediatric (PEM) and general emergency medicine (EM) provider knowledge, comfort, and current practice patterns in the evaluation of pediatric tropical infectious diseases. METHODS: An online survey was developed based on educational priorities identified by an expert panel via modified Delphi methodology. The survey included assessment of providers' typical evaluation, diagnosis, and treatment of tropical diseases and was distributed to PEM and EM providers in 2 large professional organizations...
March 12, 2018: Pediatric Emergency Care
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