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  1. Article ; Online: Presidential Address: Hookworm and the ASP-A Presidential Perspective.

    Hawdon, John M

    The Journal of parasitology

    2020  Volume 105, Issue 6, Page(s) 933–941

    MeSH term(s) History, 21st Century ; Hookworm Infections/history ; Parasitology/history ; Societies, Scientific/history ; United States
    Language English
    Publishing date 2020-01-30
    Publishing country United States
    Document type Address ; Biography ; Historical Article ; Journal Article
    ZDB-ID 300870-8
    ISSN 1937-2345 ; 0022-3395
    ISSN (online) 1937-2345
    ISSN 0022-3395
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Introduction of James "Sparky" Lok, Recipient of the 2018 Bueding and Von Brand Lectureship Award.

    Hawdon, John M

    The Journal of parasitology

    2018  Volume 104, Issue 6, Page(s) 584–585

    MeSH term(s) Awards and Prizes ; History, 20th Century ; History, 21st Century ; Parasitology/history ; Societies, Scientific ; United States
    Language English
    Publishing date 2018-08-07
    Publishing country United States
    Document type Biography ; Historical Article ; Journal Article
    ZDB-ID 300870-8
    ISSN 1937-2345 ; 0022-3395
    ISSN (online) 1937-2345
    ISSN 0022-3395
    DOI 10.1645/18-128
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: The nematode parasite

    Huynh, Tien / O'Halloran, Damien / Hawdon, John / Eleftherianos, Ioannis

    microPublication biology

    2023  Volume 2023

    Abstract: Entomopathogenic nematodes are commonly used to control insect pest populations in the field. They also contribute substantially to understanding the molecular basis of nematode pathogenicity and insect anti-nematode immunity. Here, we tested the effect ... ...

    Abstract Entomopathogenic nematodes are commonly used to control insect pest populations in the field. They also contribute substantially to understanding the molecular basis of nematode pathogenicity and insect anti-nematode immunity. Here, we tested the effect of the entomopathogenic nematode
    Language English
    Publishing date 2023-09-25
    Publishing country United States
    Document type Journal Article
    ISSN 2578-9430
    ISSN (online) 2578-9430
    DOI 10.17912/micropub.biology.000944
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: MINI-BAERMANN FUNNEL, A SIMPLE DEVICE FOR CLEANING NEMATODE INFECTIVE LARVAE.

    Huynh, Tien / McKean, Elise L / Hawdon, John M

    The Journal of parasitology

    2022  Volume 108, Issue 4, Page(s) 403–407

    Abstract: The Baermann filter method is a long-standing, simple technique for recovering nematodes from soil and charcoal coprocultures. Material containing the nematodes is placed on a mesh screen lined with several layers of tissue paper or cheesecloth, and the ... ...

    Abstract The Baermann filter method is a long-standing, simple technique for recovering nematodes from soil and charcoal coprocultures. Material containing the nematodes is placed on a mesh screen lined with several layers of tissue paper or cheesecloth, and the screen is placed in the mouth of the funnel. Rubber tubing attached to the funnel stem is clamped, and water is added to submerge the material. The filtration material allows the nematodes to swim through while holding back the substrate. Over time the nematodes settle at the clamp in the tubing. After several hours, the clamp is opened and water containing the nematodes is collected. Although recovery of the nematodes is efficient, they are often contaminated with soil or charcoal debris, requiring a secondary cleaning by sedimentation or filtration. Described here is a small, simplified version of the Baermann apparatus that can be used as a secondary cleaning device. The "mini-Baermann" is constructed from materials commonly found in the laboratory. Experiments using infective larvae of 3 nematode species demonstrated that the majority of the larvae applied to the device are collected within 2 hr, and nearly all by 4 hr. Dead larvae fail to pass through the filter and do not significantly impact the passage of living larvae. In addition to removing debris from nematode suspensions, this device can rapidly and efficiently separate living, motile larvae from dead larvae.
    MeSH term(s) Animals ; Charcoal ; Larva ; Nematoda ; Soil ; Water
    Chemical Substances Soil ; Water (059QF0KO0R) ; Charcoal (16291-96-6)
    Language English
    Publishing date 2022-08-26
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 300870-8
    ISSN 1937-2345 ; 0022-3395
    ISSN (online) 1937-2345
    ISSN 0022-3395
    DOI 10.1645/22-47
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Acceptance of the 2016 Henry Baldwin Ward Medal - A Long and Winding Road to a Diet of Worms.

    Hawdon, John M

    The Journal of parasitology

    2016  Volume 102, Issue 6, Page(s) 579–586

    Language English
    Publishing date 2016-12
    Publishing country United States
    Document type Journal Article
    ZDB-ID 300870-8
    ISSN 1937-2345 ; 0022-3395
    ISSN (online) 1937-2345
    ISSN 0022-3395
    DOI 10.1645/16-107
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  6. Article ; Online: Comparative transcriptomics from intestinal cells of permissive and non-permissive hosts during

    Langeland, Andrea / Grill, Emilia / Shetty, Amol C / O'Halloran, Damien M / Hawdon, John M

    Parasitology

    2023  Volume 150, Issue 6, Page(s) 511–523

    Abstract: Soil-transmitted nematodes (STNs) place a tremendous burden on health and economics worldwide with an estimate of at least 1.5 billion people, or 24% of the population, being infected with at least 1 STN globally. Children and pregnant women carry the ... ...

    Abstract Soil-transmitted nematodes (STNs) place a tremendous burden on health and economics worldwide with an estimate of at least 1.5 billion people, or 24% of the population, being infected with at least 1 STN globally. Children and pregnant women carry the heavier pathological burden, and disease caused by the blood-feeding worm in the intestine can result in anaemia and delays in physical and intellectual development. These parasites are capable of infecting and reproducing in various host species, but what determines host specificity remains unanswered. Identifying the molecular determinants of host specificity would provide a crucial breakthrough towards understanding the biology of parasitism and could provide attractive targets for intervention. To investigate specificity mechanisms, members of the hookworm genus
    MeSH term(s) Pregnancy ; Cricetinae ; Female ; Animals ; Humans ; Mice ; Ancylostoma/genetics ; Ancylostomiasis/parasitology ; Host Specificity ; Transcriptome ; Hookworm Infections ; Intestines
    Language English
    Publishing date 2023-03-08
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, N.I.H., Extramural
    ZDB-ID 207627-5
    ISSN 1469-8161 ; 0031-1820
    ISSN (online) 1469-8161
    ISSN 0031-1820
    DOI 10.1017/S0031182023000227
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Immunity mediates host specificity in the human hookworm

    Langeland, Andrea / McKean, Elise L / O'Halloran, Damien M / Hawdon, John M

    Parasitology

    2023  Volume 151, Issue 1, Page(s) 102–107

    Abstract: Hookworm infection affects millions globally, leading to chronic conditions like malnutrition and anaemia. Among the hookworm species, ...

    Abstract Hookworm infection affects millions globally, leading to chronic conditions like malnutrition and anaemia. Among the hookworm species,
    MeSH term(s) Humans ; Cricetinae ; Adult ; Animals ; Dogs ; Mice ; Ancylostoma ; Ancylostomatoidea ; Phylogeny ; Hookworm Infections/veterinary ; Host Specificity
    Language English
    Publishing date 2023-11-29
    Publishing country England
    Document type Journal Article
    ZDB-ID 207627-5
    ISSN 1469-8161 ; 0031-1820
    ISSN (online) 1469-8161
    ISSN 0031-1820
    DOI 10.1017/S0031182023001208
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  8. Article ; Online: Altered larval activation response associated with multidrug resistance in the canine hookworm

    McKean, Elise L / Grill, Emilia / Choi, Young-Jun / Mitreva, Makedonka / O'Halloran, Damien M / Hawdon, John M

    Parasitology

    2024  Volume 151, Issue 3, Page(s) 271–281

    Abstract: Parasitic gastrointestinal nematodes pose significant health risks to humans, livestock, and companion animals, and their control relies heavily on the use of anthelmintic drugs. Overuse of these drugs has led to the emergence of resistant nematode ... ...

    Abstract Parasitic gastrointestinal nematodes pose significant health risks to humans, livestock, and companion animals, and their control relies heavily on the use of anthelmintic drugs. Overuse of these drugs has led to the emergence of resistant nematode populations. Herein, a naturally occurring isolate (referred to as BCR) of the dog hookworm,
    MeSH term(s) Humans ; Dogs ; Animals ; Ancylostoma/genetics ; Ancylostomatoidea ; Larva/genetics ; Anthelmintics/pharmacology ; Drug Resistance, Multiple/genetics ; Drug Resistance/genetics
    Chemical Substances Anthelmintics
    Language English
    Publishing date 2024-01-02
    Publishing country England
    Document type Journal Article
    ZDB-ID 207627-5
    ISSN 1469-8161 ; 0031-1820
    ISSN (online) 1469-8161
    ISSN 0031-1820
    DOI 10.1017/S0031182023001385
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  9. Article ; Online: Controlling soil-transmitted helminths: time to think inside the box?

    Hawdon, John M

    The Journal of parasitology

    2014  Volume 100, Issue 2, Page(s) 166–188

    Abstract: Soil-transmitted helminths (STH) refer to several parasitic nematode species that infect over 1 billion people worldwide. Infections with Ascaris lumbricoides , Trichuris trichiura , and the hookworms Necator americanus and Ancylostoma duodenale cause ... ...

    Abstract Soil-transmitted helminths (STH) refer to several parasitic nematode species that infect over 1 billion people worldwide. Infections with Ascaris lumbricoides , Trichuris trichiura , and the hookworms Necator americanus and Ancylostoma duodenale cause significant morbidity in more than 450 million people, primarily children and pregnant women, resulting in over 39 million disability-adjusted life years lost. Considerable effort and resources have been, and continue to be, spent on top-down, medical-based programs to control STH infections, with little success. This review discusses the problems with these methods and proposes a new emphasis on sustainable, long-term investments in sanitation-based approaches using improved latrines (the "box") to provide bottom-up, culturally appropriate, and economically desirable solutions to STH control in endemic areas. One such approach is the use of biogas technology. Waste undergoes fermentation in specially designed septic systems, generating a methane gas mixture ("biogas") that can be burned to augment or replace household energy needs such as cooking and light generation. Also, the effluent from the fermentation chamber provides a high quality, nitrogen rich fertilizer. Using China as an example, the use of biogas technology as a solution to rural sanitation and energy problems is described, and its advantages over current strategies of mass drug administration and vaccination for STH control are highlighted.
    MeSH term(s) Animals ; Anthelmintics/economics ; Anthelmintics/pharmacology ; Anthelmintics/therapeutic use ; Biofuels ; Disease Models, Animal ; Drug Resistance ; Humans ; Nematode Infections/drug therapy ; Nematode Infections/prevention & control ; Nematode Infections/transmission ; Sanitation/methods ; Sanitation/standards ; Soil/parasitology ; Toilet Facilities/economics ; Toilet Facilities/standards ; Vaccines/economics ; Vaccines/standards
    Chemical Substances Anthelmintics ; Biofuels ; Soil ; Vaccines
    Language English
    Publishing date 2014-04
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 300870-8
    ISSN 1937-2345 ; 0022-3395
    ISSN (online) 1937-2345
    ISSN 0022-3395
    DOI 10.1645/13-412.1
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: Culturing and genetically manipulating entomopathogenic nematodes

    Heryanto, Christa / Ratnappan, Ramesh / O'Halloran, Damien M. / Hawdon, John M. / Eleftherianos, Ioannis

    Journal of visualized experiments. 2022 Mar. 31, , no. 181

    2022  

    Abstract: Entomopathogenic nematodes in the genera Heterorhabditis and Steinernema are obligate parasites of insects that live in the soil. The main characteristic of their life cycle is the mutualistic association with the bacteria Photorhabdus and Xenorhabdus, ... ...

    Abstract Entomopathogenic nematodes in the genera Heterorhabditis and Steinernema are obligate parasites of insects that live in the soil. The main characteristic of their life cycle is the mutualistic association with the bacteria Photorhabdus and Xenorhabdus, respectively. The nematode parasites are able to locate and enter suitable insect hosts, subvert the insect immune response, and multiply efficiently to produce the next generation that will actively hunt new insect prey to infect. Due to the properties of their life cycle, entomopathogenic nematodes are popular biological control agents, which are used in combination with insecticides to control destructive agricultural insect pests. Simultaneously, these parasitic nematodes represent a research tool to analyze nematode pathogenicity and host anti-nematode responses. This research is aided by the recent development of genetic techniques and transcriptomic approaches for understanding the role of nematode secreted molecules during infection. Here, a detailed protocol on maintaining entomopathogenic nematodes and using a gene knockdown procedure is provided. These methodologies further promote the functional characterization of entomopathogenic nematode infection factors.
    Keywords Heterorhabditis ; Photorhabdus ; Steinernema ; Xenorhabdus ; biological control ; entomopathogenic nematodes ; gene targeting ; immune response ; insect immunity ; insects ; nematode infections ; pathogenicity ; soil ; transcriptomics
    Language English
    Dates of publication 2022-0331
    Size p. e63885.
    Publishing place Journal of Visualized Experiments
    Document type Article
    ZDB-ID 2259946-0
    ISSN 1940-087X
    ISSN 1940-087X
    DOI 10.3791/63885
    Database NAL-Catalogue (AGRICOLA)

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