Improved Postmortem Diagnosis of Taenia Saginata Cysticercosis
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Dirofilaria Repens Nematode Infection with Microfilaremia in Traveler Returning to Belgium from Senegal
RESEARCH LETTERS 6. Sohan K, Cyrus CA. Ultrasonographic observations of the fetal We report human infection with a Dirofilaria repens nema- brain in the first 100 pregnant women with Zika virus infection in tode likely acquired in Senegal. An adult worm was extract- Trinidad and Tobago. Int J Gynaecol Obstet. 2017;139:278–83. ed from the right conjunctiva of the case-patient, and blood http://dx.doi.org/10.1002/ijgo.12313 7. Parra-Saavedra M, Reefhuis J, Piraquive JP, Gilboa SM, microfilariae were detected, which led to an initial misdiag- Badell ML, Moore CA, et al. Serial head and brain imaging nosis of loiasis. We also observed the complete life cycle of of 17 fetuses with confirmed Zika virus infection in Colombia, a D. repens nematode in this patient. South America. Obstet Gynecol. 2017;130:207–12. http://dx.doi.org/10.1097/AOG.0000000000002105 8. Kleber de Oliveira W, Cortez-Escalante J, De Oliveira WT, n October 14, 2016, a 76-year-old man from Belgium do Carmo GM, Henriques CM, Coelho GE, et al. Increase in Owas referred to the travel clinic at the Institute of Trop- reported prevalence of microcephaly in infants born to women ical Medicine (Antwerp, Belgium) because of suspected living in areas with confirmed Zika virus transmission during the first trimester of pregnancy—Brazil, 2015. MMWR Morb loiasis after a worm had been extracted from his right con- Mortal Wkly Rep. 2016;65:242–7. http://dx.doi.org/10.15585/ junctiva in another hospital. Apart from stable, treated arte- mmwr.mm6509e2 rial hypertension and non–insulin-dependent diabetes, he 9. -
Anthology of Dirofilariasis in Russia (1915–2017)
pathogens Review Anthology of Dirofilariasis in Russia (1915–2017) Anatoly V. Kondrashin 1, Lola F. Morozova 1, Ekaterina V. Stepanova 1, Natalia A. Turbabina 1, Maria S. Maksimova 1 and Evgeny N. Morozov 1,2,* 1 Martsinovsky Institute of Medical Parasitology, Tropical and Vector-Borne Diseases, Sechenov University, 119435 Moscow, Russia; [email protected] (A.V.K.); [email protected] (L.F.M.); [email protected] (E.V.S.); [email protected] (N.A.T.); [email protected] (M.S.M.) 2 Department of Tropical, Parasitic Diseases and Disinfectology, Russian Medical Academy of Continuous Professional Education, 125445 Moscow, Russia * Correspondence: [email protected] Received: 21 March 2020; Accepted: 7 April 2020; Published: 9 April 2020 Abstract: Dirofilariasis is a helminths vector-borne disease caused by two species of Dirofolaria— D. repens and D. immitis. The former is overwhelmingly associated with human dirofilariasis. The vector of the worm are mosquitoes of the family Culicidae (largely Culex, Aedes and Anopheles). The definitive hosts of Dirofilaria are dogs and to a lesser extent cats. Humans are an accidental host. A total of 1200 human cases caused by Dirofilaria were registered in the territory of the ex-USSR during the period 1915–2016. Zonal differences have been seen in the prevalence of infected dogs and mosquitoes. Studies undertaken in the southern part of the Russian Federation (RF) revealed the prevalence of Dirofilaria in dogs to be 20.8% with wild variations of larva density. Studies carried out in the central part of the RF found that the prevalence of parasites in dogs was 4.1%. -
Hookworm-Related Cutaneous Larva Migrans
326 Hookworm-Related Cutaneous Larva Migrans Patrick Hochedez , MD , and Eric Caumes , MD Département des Maladies Infectieuses et Tropicales, Hôpital Pitié-Salpêtrière, Paris, France DOI: 10.1111/j.1708-8305.2007.00148.x Downloaded from https://academic.oup.com/jtm/article/14/5/326/1808671 by guest on 27 September 2021 utaneous larva migrans (CLM) is the most fre- Risk factors for developing HrCLM have specifi - Cquent travel-associated skin disease of tropical cally been investigated in one outbreak in Canadian origin. 1,2 This dermatosis fi rst described as CLM by tourists: less frequent use of protective footwear Lee in 1874 was later attributed to the subcutane- while walking on the beach was signifi cantly associ- ous migration of Ancylostoma larvae by White and ated with a higher risk of developing the disease, Dove in 1929. 3,4 Since then, this skin disease has also with a risk ratio of 4. Moreover, affected patients been called creeping eruption, creeping verminous were somewhat younger than unaffected travelers dermatitis, sand worm eruption, or plumber ’ s itch, (36.9 vs 41.2 yr, p = 0.014). There was no correla- which adds to the confusion. It has been suggested tion between the reported amount of time spent on to name this disease hookworm-related cutaneous the beach and the risk of developing CLM. Consid- larva migrans (HrCLM).5 ering animals in the neighborhood, 90% of the Although frequent, this tropical dermatosis is travelers in that study reported seeing cats on the not suffi ciently well known by Western physicians, beach and around the hotel area, and only 1.5% and this can delay diagnosis and effective treatment. -
TCM Diagnostics Applied to Parasite-Related Disease
TCM Diagnostics Applied to Parasite-Related Disease by Laraine Crampton, M.A.T.C.M., L. Ac. Capstone Advisor: Lawrence J. Ryan, Ph.D. Presented in partial fulfillment of the requirements for the degree Doctor of Acupuncture and Oriental Medicine Yo San University of Traditional Chinese Medicine Los Angeles, California April 2014 TCM and Parasites/Crampton 2 Approval Signatures Page This Capstone Project has been reviewed and approved by: April 30th, 2014 ____________________________________________________________________________ Lawrence J. Ryan, Ph. D. Capstone Project Advisor Date April 30th, 2014 ________________________________________________________________________ Don Lee, L. Ac. Specialty Chair Date April 30th, 2014 ________________________________________________________________________ Andrea Murchison, D.A.O.M., L.Ac. Program Director Date TCM and Parasites/Crampton 3 Abstract Complex, chronic disease affects millions in the United States, imposing a significant cost to the affected individuals and the productivity and economic realities those individuals and their families, workplaces and communities face. There is increasing evidence leading towards the probability that overlooked and undiagnosed parasitic disease is a causal, contributing, or co- existent factor for many of those afflicted by chronic disease. Yet, frustratingly, inadequate diagnostic methods and clever adaptive mechanisms in parasitic organisms mean that even when physicians are looking for parasites, they may not find what is there to be found. Examining the practice of medicine in the United States just over a century ago reveals that fully a third of diagnostic and treatment concerns for leading doctors of the time revolved around parasitic organisms and related disease, and that the population they served was largely located in rural areas. By the year 2000, more than four-fifths of the population had migrated to cities, enjoying the benefits of municipal services, water treatment systems, grocery stores and restaurants. -
Prevention, Diagnosis, and Management of Infection in Cats
Current Feline Guidelines for the Prevention, Diagnosis, and Management of Heartworm (Dirofilaria immitis) Infection in Cats Thank You to Our Generous Sponsors: Printed with an Education Grant from IDEXX Laboratories. Photomicrographs courtesy of Bayer HealthCare. © 2014 American Heartworm Society | PO Box 8266 | Wilmington, DE 19803-8266 | E-mail: [email protected] Current Feline Guidelines for the Prevention, Diagnosis, and Management of Heartworm (Dirofilaria immitis) Infection in Cats (revised October 2014) CONTENTS Click on the links below to navigate to each section. Preamble .................................................................................................................................................................. 2 EPIDEMIOLOGY ....................................................................................................................................................... 2 Figure 1. Urban heat island profile. BIOLOGY OF FELINE HEARTWORM INFECTION .................................................................................................. 3 Figure 2. The heartworm life cycle. PATHOPHYSIOLOGY OF FELINE HEARTWORM DISEASE ................................................................................... 5 Figure 3. Microscopic lesions of HARD in the small pulmonary arterioles. Figure 4. Microscopic lesions of HARD in the alveoli. PHYSICAL DIAGNOSIS ............................................................................................................................................ 6 Clinical -
Filarial Worms
Filarial worms Blood & tissues Nematodes 1 Blood & tissues filarial worms • Wuchereria bancrofti • Brugia malayi & timori • Loa loa • Onchocerca volvulus • Mansonella spp • Dirofilaria immitis 2 General life cycle of filariae From Manson’s Tropical Diseases, 22 nd edition 3 Wuchereria bancrofti Life cycle 4 Lymphatic filariasis Clinical manifestations 1. Acute adenolymphangitis (ADLA) 2. Hydrocoele 3. Lymphoedema 4. Elephantiasis 5. Chyluria 6. Tropical pulmonary eosinophilia (TPE) 5 Figure 84.10 Sequence of development of the two types of acute filarial syndromes, acute dermatolymphangioadenitis (ADLA) and acute filarial lymphangitis (AFL), and their possible relationship to chronic filarial disease. From Manson’s tropical Diseases, 22 nd edition 6 Bancroftian filariasis Pathology 7 Lymphatic filariasis Parasitological Diagnosis • Usually diagnosis of microfilariae from blood but often negative (amicrofilaraemia does not exclude the disease!) • No relationship between microfilarial density and severity of the disease • Obtain a specimen at peak (9pm-3am for W.b) • Counting chamber technique: 100 ml blood + 0.9 ml of 3% acetic acid microscope. Species identification is difficult! 8 Lymphatic filariasis Parasitological Diagnosis • Staining (Giemsa, haematoxylin) . Observe differences in size, shape, nuclei location, etc. • Membrane filtration technique on venous blood (Nucleopore) and staining of filters (sensitive but costly) • Knott concentration technique with saponin (highly sensitive) may be used 9 The microfilaria of Wuchereria bancrofti are sheathed and measure 240-300 µm in stained blood smears and 275-320 µm in 2% formalin. They have a gently curved body, and a tail that becomes thinner to a point. The nuclear column (the cells that constitute the body of the microfilaria) is loosely packed; the cells can be visualized individually and do not extend to the tip of the tail. -
Enophthalmos As the Initial Systemic Finding of Undiagnosed Metastatic Breast Carcinoma
International Medical Case Reports Journal Dovepress open access to scientific and medical research Open Access Full Text Article CASE SERIES Enophthalmos as the Initial Systemic Finding of Undiagnosed Metastatic Breast Carcinoma This article was published in the following Dove Press journal: International Medical Case Reports Journal Jessica El-Khazen Dupuis Purpose: To report on the importance of detecting and investigating non-traumatic Michael Marchand enophthalmos, which occurred as the first presenting sign of an undiagnosed metastatic Simon Javidi breast carcinoma in two patients with no prior history of neoplasia. Tuan Quynh Tram Nguyen Design: Case series. Observations: The first case consists of a 74-year-old woman with no significant past Department of Ophthalmology, Centre medical history, who presented with a non-traumatic enophthalmos and ptosis of her left eye, Hospitalier de l’Université de Montréal (CHUM), Montreal, QC H2X 3E4, and horizontal diplopia on right-gaze. Imaging revealed an intraconal lesion of her left orbit, Canada with orbital fat atrophy. Transcutaneous anterior orbitotomy was performed for tumor biopsy, and the histopathology study concluded on a diagnosis of orbital metastasis consistent with infiltrative breast carcinoma. Thorough breast imaging and multiple breast biopsies were not able to localize the primary tumor. The second case consists of a 76-year-old woman, with no prior relevant medical history, who presented for progressive enophthalmos and ptosis of her right eye. Imaging revealed an osteolytic lesion of her right frontal bone, and multiple infiltrative lesions implicating both orbits. A biopsy was performed through a transcutaneous anterior orbitotomy and histopathology study lead to a diagnosis of meta static lobular breast carcinoma. -
Prostate 1 Prostate
Prostate 1 Prostate Prostate Male Anatomy Prostate with seminal vesicles and seminal ducts, viewed from in front and above. Latin prostata [1] Gray's subject #263 1251 Artery internal pudendal artery, inferior vesical artery, and middle rectal artery Vein prostatic venous plexus, pudendal plexus, vesicle plexus, internal iliac vein Nerve inferior hypogastric plexus Lymph external iliac lymph nodes, internal iliac lymph nodes, sacral lymph nodes Precursor Endodermic evaginations of the urethra [2] MeSH Prostate [3] Dorlands/Elsevier Prostate The prostate (from Greek προστάτης - prostates, literally "one who stands before", "protector", "guardian"[4] ) is a compound tubuloalveolar exocrine gland of the male reproductive system in most mammals unless they have it removed at birth.[5] [6] In 2002, female paraurethral glands, or Skene's glands, were officially renamed the female prostate by the Federative International Committee on Anatomical Terminology.[7] The prostate differs considerably among species anatomically, chemically, and physiologically. Prostate 2 Function The function of the prostate is to store and secrete a slightly alkaline fluid, milky or white in appearance,[8] that usually constitutes 20-30% of the volume of the semen along with spermatozoa and seminal vesicle fluid. The alkalinity of semen helps neutralize the acidity of the vaginal tract, prolonging the lifespan of sperm. The alkalinization of semen is primarily accomplished through secretion from the seminal vesicles.[9] The prostatic fluid is expelled in the first ejaculate fractions, together with most of the spermatozoa. In comparison with the few spermatozoa expelled together with mainly seminal vesicular fluid, those expelled in prostatic fluid have better motility, longer survival and better protection of the genetic material (DNA). -
Molecular Characterization of Ocular Dirofilariasis: a Case Report of Dirofilaria Immitis in South-Eastern Iran
Parsa et al. BMC Infectious Diseases (2020) 20:520 https://doi.org/10.1186/s12879-020-05182-5 CASE REPORT Open Access Molecular characterization of ocular dirofilariasis: a case report of Dirofilaria immitis in south-eastern Iran Razieh Parsa1, Ali Sedighi1, Iraj Sharifi2, Mehdi Bamorovat2 and Saeid Nasibi3* Abstract Background: Dirofilariasis is a zoonotic parasitic infection transmitted from animals to humans by culicid mosquitoes. Although the disease can be caused by Dirofilaria spp. including Dirofilaria immitis and Dirofilaria repens, human ocular dirofilariasis due to D. immitis is relatively rare in the world. This study was aimed to present a case of ocular dirofilariasis caused by D. immitis in southeastern Iran. Case presentation: A nematode extracted from the right eye of a 69-year-old man referred with clinical symptoms including itching and redness was examined. After the morphometric analysis, Dirofilaria parasite was detected. Afterwards, a piece of worm body was cut and DNA was extracted and a 680-bp gene fragment amplification and nucleotide sequencing were performed. Phylogenetic analysis revealed a D. immitis roundworm as the causative agent of infection. The patient was treated with antibiotics and corticosteroid and followed up for 1 month. Conclusion: The present study provides the second report on ocular dirofilariasis caused by D. immitis isolated from a human in southeast Iran. Based on the available evidence, dirofilariasis in dogs has significantly increased in endemic areas such as Iran. Therefore, physicians should be aware of such zoonotic nematodes so as to take proper and timely action and treatment against the disease. Keywords: Dirofilaria immitis, Ocular, Molecular, Iran, Bam Background pulmonary and subcutaneous nodules/ocular, respect- Dirofilariasis (heartworm disease) caused by Dirofilaria ively [3, 4]. -
Zoonotic Aspects of A. S. DISSANAIKE'
Bulletin of the World Health Organizaton, 57 (3): 349-357 (1979) Zoonotic aspects of filarial infections in man A. S. DISSANAIKE' This article gives an account of the filarial parasites found in man and their potential transmissibility to and from other vertebrate animals under natural and experimental conditions. Those species that are regarded as being primarily parasites ofother vertebrates, but which also infect man, are then dealt with in greater detail. These include the subperiodic strain ofBrugia malayi and perhaps also B. pahangi, both of which are found in wild and domestic carnivores and monkeys, and Dirofilaria species ofdogs and racoons. The Brugia parasites develop to maturity with theproduction ofmicrofilaraemia and clinical manifestations in man similar to those caused by periodic B. malayi in man. Human dirofilariasis, on the other hand, represents a transmission cul-de-sac for the parasite. Clinical manifestations are mild or absent and generally the worms do not mature and, even if they do, they rarely give rise to microfilaraemia. D. immitis causes pulmonary dirofilariasis, and D. repens and D. tenuis give rise to subcutaneous nodules in man. The diagnosis of dirofilariasis depends on an awareness of the infeetion in the animal reservoirs and of the possibility of man being exposed to bites of infected vectors. Filarial worms are viviparous and the young larvae they produce, which are known as microfilariae, eventually find their way into the peripheral blood or to the superficial layers of the skin of their vertebrate hosts. The microfilariae are eventualiy picked up by the appropriate intermediate host or vector. These vectors are most frequently mosquitos, although other arthropods such as blackflies, deer flies, midges, fleas, and even ticks and mites may also be vectors. -
Zoonotic Helminths Affecting the Human Eye Domenico Otranto1* and Mark L Eberhard2
Otranto and Eberhard Parasites & Vectors 2011, 4:41 http://www.parasitesandvectors.com/content/4/1/41 REVIEW Open Access Zoonotic helminths affecting the human eye Domenico Otranto1* and Mark L Eberhard2 Abstract Nowaday, zoonoses are an important cause of human parasitic diseases worldwide and a major threat to the socio-economic development, mainly in developing countries. Importantly, zoonotic helminths that affect human eyes (HIE) may cause blindness with severe socio-economic consequences to human communities. These infections include nematodes, cestodes and trematodes, which may be transmitted by vectors (dirofilariasis, onchocerciasis, thelaziasis), food consumption (sparganosis, trichinellosis) and those acquired indirectly from the environment (ascariasis, echinococcosis, fascioliasis). Adult and/or larval stages of HIE may localize into human ocular tissues externally (i.e., lachrymal glands, eyelids, conjunctival sacs) or into the ocular globe (i.e., intravitreous retina, anterior and or posterior chamber) causing symptoms due to the parasitic localization in the eyes or to the immune reaction they elicit in the host. Unfortunately, data on HIE are scant and mostly limited to case reports from different countries. The biology and epidemiology of the most frequently reported HIE are discussed as well as clinical description of the diseases, diagnostic considerations and video clips on their presentation and surgical treatment. Homines amplius oculis, quam auribus credunt Seneca Ep 6,5 Men believe their eyes more than their ears Background and developing countries. For example, eye disease Blindness and ocular diseases represent one of the most caused by river blindness (Onchocerca volvulus), affects traumatic events for human patients as they have the more than 17.7 million people inducing visual impair- potential to severely impair both their quality of life and ment and blindness elicited by microfilariae that migrate their psychological equilibrium. -
Treasures in Archived Histopathology Collections: Preserving the Past for Future Understanding
Managing Editor, Nancy Klemme Scientific Editor, Vinnie Della Speranza, Vol. XLIII, No. 1 June 2010 MS, HTL(ASCP)HT, MT Treasures in Archived Histopathology Collections: Preserving the Past for (NOAA) National Marine Fisheries Service, and other agencies and Future Understanding academic institutions. The RTLA is a specimen depository and information Doranne Borsay Horowitz, BS, HT(ASCP)1; Esther C. Peters, PhD2; clearinghouse of cases submitted by Inke Sunila, PhD3; Jeffrey C. Wolf, DVM4 researchers from around the world, providing slides of neoplasms1,2 and [email protected] related diseases among reptiles, amphibians, fish, sharks, mollusks, 1US Environmental Protection Agency, Office of Research & Development, National Health & Environmental Effects Research Laboratory, Atlantic Ecology Division, Narragansett, RI arthropods, echinoderms, and coral. 2Department of Environmental Science and Policy, George Mason University, Fairfax, VA These archived collections are valuable 3 State of Connecticut, Department of Agriculture, Bureau of Aquaculture, Milford, CT resources for scientists seeking to 4Experimental Pathology Laboratories, Sterling, VA understand health and disease in diverse species (Fig. 1), for training new aquatic Abstract pathologists, predicting risks from biotic and abiotic stressors (eg, toxicant impacts Extensive collections of histopathology materials from studies of marine and on organisms in multiple locations), freshwater fish, mollusks, crustaceans, echinoderms, and other organisms are archived determining disease status through at the Registry of Tumors in Lower Animals (RTLA), the US Environmental DNA extraction and analysis, supplying Protection Agency (EPA), the National Oceanic and Atmospheric Administration data for historical reconstructions (eg, when a virus first affected a host species), A B IN THIS ISSUE Treasures in Archived Histopathology Collections: Preserving the Past for Future Understanding .