Morphological and Pathological Findings in the Middle and Inner Ears of Harbour Porpoises (Phocoena phocoena)

Publication date: October 2019Source: Journal of Comparative Pathology, Volume 172Author(s): P. Wohlsein, H. Seibel, A. Beineke, W. Baumgärtner, U. SiebertSummaryHearing represents the major sense in harbour porpoises (Phocoena phocoena) and impairment of hearing has a great impact on the survival of these animals. In this communication, some anatomical and histological aspects of the tympanoperiotic complex of harbour porpoises are presented. In addition, the ears of 21 incidentally bycaught or stranded freshly dead harbour porpoises of different age groups and sex were investigated histologically. At the entrance to the middle ear cavity, mucosa-associated lymphoid tissue was present that was often hyperplastic in juvenile (9/10) and adult individuals (7/8). Solitary lymphoid follicles were additionally found in the corpus cavernosum and adjacent to the stapedius muscle in single porpoises. The nematode Stenurus minor represented the most common pathogen observed in the middle ear cavity of juvenile and adult harbour porpoises and the parasite was associated with chronic inflammation with metaplastic and hyperplastic epithelial changes. An unusual bone formation at the attachment of the corpus cavernosum to the perioticum was a common finding, even in young individuals. Whether this represents a normal structure or a metaplastic change remains undetermined. Acute haemorrhages in the cochlea and/or the tympanic cavity occurred in all animals and were most likely agonal ...
Source: Journal of Comparative Pathology - Category: Pathology Source Type: research

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Publication date: Available online 15 November 2019Source: Molecular and Biochemical ParasitologyAuthor(s): Marla I Hertz, Philip M Glaessner, Amy Rush, Philip J BudgeAbstractGalectins are among the most abundant excretory/secretory (ES) products of filarial worms, but their role in filarial biology is poorly understood. Galectin-2 (Lec-2), a major component of Brugia malayi extracellular vesicles, is released by filarial worms, and was recently identified in the serum of persons with loiasis. We therefore sought to clone and characterize Lec-2, and to develop reagents to examine its potential as a biomarker and its role i...
Source: Molecular and Biochemical Parasitology - Category: Parasitology Source Type: research
Publication date: November 2019Source: Saudi Journal of Biological Sciences, Volume 26, Issue 7Author(s): Mohamed A. Dkhil, Mona F. Khalil, Marwa S.M. Diab, Amira A. Bauomy, Simeon Santourlidis, Esam M. Al-Shaebi, Saleh Al-QuraishyAbstractNanomedicine is one of the most important methods used to treat human diseases including parasitic diseases. Schistosomiasis is a major parasitic disease that affects human health in tropical regions. Whilst Praziquantel is the main classic antischistosomal drug, new drugs are required due to the poor effect of the drug on the parasite juveniles and immature worms, and the emergence of dr...
Source: Saudi Journal of Biological Sciences - Category: Biology Source Type: research
In conclusion, promising nonchemical (plant extracts) are innocuous to adult bees. So, we strongly believed that this effort was made to evaluate the status of medicinal plants researches globally.
Source: Saudi Journal of Biological Sciences - Category: Biology Source Type: research
Publication date: Available online 15 November 2019Source: Chemico-Biological InteractionsAuthor(s): Paula Roberta da Silva, Jamerson Ferreira de Oliveira, Anekécia Lauro da Silva, Camila Marques Queiroz, Ana Paula Sampaio Feitosa, Denise Maria Figueiredo Araújo Duarte, Aline Caroline da Silva, Maria Carolina Accioly Brelaz de Castro, Valéria Rêgo Alves Pereira, Rosali Maria Ferreira da Silva, Luiz Carlos Alves, Fábio André Brayner dos Santos, Maria do Carmo Alves de LimaAbstractParasitic diseases still represent serious public health problems, since the high and steady emergence of...
Source: Chemico Biological Interactions - Category: Biochemistry Source Type: research
AbstractPurpose of ReviewThe purpose of this review is to discuss the current knowledge of HIV and tissue parasite co-infection in the context of transmission enhancement, clinical characteristics, treatment, relapse, and clinical outcomes.Recent FindingsThe pathophysiology and clinical sequelae of tissue parasites in people living with HIV (PLWH) have been well described for only a handful of organisms, primarily protozoa such as malaria and leishmaniasis. Available published data indicate that the interactions between HIV and tissue parasites are highly variable depending on the infecting organism and the degree of host ...
Source: Current Infectious Disease Reports - Category: Infectious Diseases Source Type: research
ConclusionThese results indicate that A. farnesiana pods contain nematocidal compounds and might be promising natural anthelmintic agents against H. contortus. This leguminous plant could be used as a nutraceutical food source for the control of gastrointestinal nematodes in small ruminants.Graphical abstract
Source: Journal of Ethnopharmacology - Category: Drugs & Pharmacology Source Type: research
Publication date: 14 November 2019Source: Cell, Volume 179, Issue 5Author(s): Rebecca R. Stanway, Ellen Bushell, Anush Chiappino-Pepe, Magali Roques, Theo Sanderson, Blandine Franke-Fayard, Reto Caldelari, Murielle Golomingi, Mary Nyonda, Vikash Pandey, Frank Schwach, Séverine Chevalley, Jai Ramesar, Tom Metcalf, Colin Herd, Paul-Christian Burda, Julian C. Rayner, Dominique Soldati-Favre, Chris J. Janse, Vassily HatzimanikatisSummaryPlasmodium gene functions in mosquito and liver stages remain poorly characterized due to limitations in the throughput of phenotyping at these stages. To fill this gap, we followed...
Source: Cell - Category: Cytology Source Type: research
Publication date: Available online 15 November 2019Source: Biocatalysis and Agricultural BiotechnologyAuthor(s): Azita Navvabi, Ahmad Homaei, Shahram Khademvatan, Mohammad Hassan Khadem Ansari, Mousa KeshavarzAbstractEchinococcosis (hydatid cyst) is a zoonotic disease in sheep, cattle, pigs, rats, and humans that is caused by larvae of the tapeworm Echinococcus granulosus. Several studies have shown that invertebrates exhibit activity against various parasites, but no studies are available of effects of extracts of the sea urchin Echinometra mathaei on hydatid cysts. Here, E. mathaeis gonad extracts were investigated for t...
Source: Biocatalysis and Agricultural Biotechnology - Category: Biotechnology Source Type: research
Raquel Ferrer-Espada1,2, Xiaojing Liu1,2, Xueping Sharon Goh1,2 and Tianhong Dai1,2* 1Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States 2Vaccine &Immunotherapy Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States Polymicrobial biofilms, in which mixed microbial species are present, play a significant role in persistent infections. Furthermore, polymicrobial biofilms promote antibiotic resistance by allowing interspecies transfer of antibiotic resistance genes. In the present study, we investigated the effec...
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
Discussion Angioedema is edema that is non-pitting, self-limited occurring in non-dependent areas usually in an asymmetric distribution usually on the lips, face, hands, feet, genitals and also in the bowel. It usually develops over minutes to hours (often 1-2 hours) with resolution usually within 24-48 hours. Angioedema often occurs with urticaria but 20% of patients may have isolated angioedema. Acute allergic angioedema is often caused by drugs (including antibiotics and non-steroidal anti-inflammatory drugs), foods, infections, insects, various organic substances (i.e. latex, preservatives, formaldehyde, etc.), and oth...
Source: PediatricEducation.org - Category: Pediatrics Authors: Tags: Uncategorized Source Type: news
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