Encapsulation ability: Are all Drosophila species equally armed? An investigation in the obscura group

2009 ◽  
Vol 87 (7) ◽  
pp. 635-641 ◽  
Author(s):  
S. Havard ◽  
P. Eslin ◽  
G. Prévost ◽  
G. Doury
Keyword(s):  
Drosophila Melanogaster ◽  
Related Species ◽  
Unusual Case ◽  
Foreign Bodies ◽  
Drosophila Subobscura ◽  
Drosophila Species ◽  
Drosophila Persimilis ◽  
Obscura Group ◽  
Encapsulation Ability

Unable to form cellular capsules around large foreign bodies, the species Drosophila subobscura Collin in Gordon, 1936 was previously shown devoid of lamellocytes, the capsule-forming hemocytes in Drosophila melanogaster Meigen, 1830. This unusual case of deficiency in encapsulation ability was remarkable enough to motivate further investigations in phylogenetically related species of the obscura group. Like D. subobscura, the species Drosophila azteca Sturtevant and Dobzhansky, 1936, Drosophila bifasciata Pomini, 1940, Drosophila guanche Monclus, 1976, Drosophila miranda Dobzhansky, 1935, Drosophila persimilis Dobzhansky and Epling, 1944, and Drosophila pseudoobcura Frovola and Astaurov, 1929 were found to be unable to encapsulate large foreign bodies and also to lack lamellocytes. Surprisingly, Drosophila affinis Sturtevant, 1916, Drosophila tolteca Patterson and Mainland, 1944, and Drosophila obscura Fallen, 1823 were capable of mounting cellular capsules, although their encapsulation abilities remained weak. These three species were free of lamellocytes but possessed small pools of never before described “atypical hemocytes” present in the hemolymph when capsules were formed.

scholarly journals Unusual case of a graphite foreign body in the anterior chamber

2011 ◽  
Vol 1 (3) ◽  
pp. 73 ◽  
Author(s):  
Anika Amritanand ◽  
Sheeja S. John ◽  
Swetha S. Philip ◽  
Deepa John ◽  
Sarada David
Keyword(s):  
Foreign Body ◽  
Anterior Chamber ◽  
Inflammatory Reaction ◽  
Unusual Case ◽  
Foreign Bodies ◽  
Progressive Damage ◽  
Severe Inflammatory Reaction ◽  
Pencil Lead

Retained intraocular graphite foreign bodies are uncommon. Although they are generally inert, they have been reported to cause severe inflammatory reaction and progressive damage to intraocular structures. We report a case of a six-year-old girl with a retained intraocular graphite pencil lead foreign body in the anterior chamber of the eye and discuss the various considerations in the management of such cases.

scholarly journals Incidental Radiographic Discovery of a Screw in a Primary Molar: An Unusual Case Report in a 6 Year Old Child

2013 ◽  
Vol 2013 ◽  
pp. 1-3
Author(s):  
Farhin Katge ◽  
Sajjad Mithiborwala ◽  
Thejokrishna Pammi
Keyword(s):  
Case Report ◽  
Clinical Examination ◽  
Unusual Case ◽  
Foreign Bodies ◽  
Primary Dentition ◽  
Carious Lesion ◽  
Pulp Chamber ◽  
Primary Molar ◽  
Traumatic Lesions ◽  
Unusual Case Report

Dentists often find foreign bodies in the primary dentition of children who habitually place objects in their mouths. The objects are frequently embedded in exposures that result from carious or traumatic lesions or from endodontic procedures that have been left open for drainage. Such bodies are often detected on routine radiographs and, less frequently, during clinical examination. We report a case of a 6-year-old boy who had inadvertently embedded a screw in his mandibular right first primary molar and had forgotten about it until it became symptomatic. The screw was impacted in the exposed pulp chamber due to a large carious lesion in the affected molar. This case report considers the possible medical and dental consequences of placing foreign bodies in the mouth.

Locomotion is not influenced by denticle number in larvae of the fruit fly Drosophila melanogaster

2005 ◽  
Vol 83 (2) ◽  
pp. 368-371 ◽  
Author(s):  
Mark J Fitzpatrick ◽  
Evelyn Szewczyk
Keyword(s):  
Drosophila Melanogaster ◽  
Related Species ◽  
Natural Variation ◽  
Fruit Fly ◽  
Fruit Flies ◽  
Negative Effects ◽  
Closely Related Species ◽  
Locomotory Performance ◽  
Locomotion Speed

Denticles are small projections on the underside of larval fruit flies that are used to grip the substrate while crawling. Previous studies have shown that (i) there is natural variation in denticle number and pattern between Drosophila melanogaster (Meigen, 1830) and several closely related species and (ii) mutations affecting denticle morphology have negative effects on locomotory performance. We hypothesized that there would be a correlation between denticle number and locomotory performance within populations of D. melanogaster. Despite finding considerable variation in denticle number, we found no correlation between denticle number and three measurements of larval locomotion: speed, acceleration, and absolute turning rate.

scholarly journals Eraser Rhinolith: A Case Report

2019 ◽  
Author(s):  
Hesam Jahandideh ◽  
Farideh Hosseinzadeh
Keyword(s):  
Mental Retardation ◽  
Foreign Body ◽  
Nasal Cavity ◽  
Nasal Obstruction ◽  
Unusual Case ◽  
Foreign Bodies ◽  
Pediatric Patients ◽  
Left Nasal Cavity ◽  
Round Shape ◽  
Psychiatric Problems

Abstract- Nasal foreign bodies are usually received in otolaryngology practice. Although more frequently seen in pediatric patients, also they can affect adults, specifically those with mental retardation or any psychiatric problems. We presented an unusual case of the nasal foreign body, an eraser rhinolith in a 17-year-old boy with mild mental retardation presented with long-lasting nasal obstruction but no chronic infection or epistaxis. Computed tomography revealed a peripherally calcified sub-mucosal round mass in the left nasal cavity. After surgery, a round shape foreign body that looked like an eraser piece was removed from the nasal cavity. Rhinolith can present just with nasal obstruction. With properly diagnosed and appropriate surgery, all rhinoliths can be removed and complication of extraction can be minimized

Pellet impaction at identical site in both orbits

2007 ◽  
Vol 04 (02) ◽  
pp. 125-126
Author(s):  
DK Singh ◽  
VD Sinha ◽  
H Bagaria ◽  
SR Dharkar
Keyword(s):  
Unusual Case ◽  
Foreign Bodies ◽  
Ocular Injuries

AbstractIntra orbital foreign bodies are relatively uncommon and constitute 2.9% of ocular injuries. Pellet injury of orbit is also uncommon and constitutes 2.4% of orbital injuries We present an unusual case of bilateral orbital pellet injury where both the pellets were seen at identical positions in both orbits.

scholarly journals A Rare Incidental Finding of a Foreign Body in the Nasopharynx during Adenotonsillectomy

2018 ◽  
Vol 2018 ◽  
pp. 1-3
Author(s):  
Waleed M. Alshehri ◽  
Bandar Al-Qahtani
Keyword(s):  
Health Care ◽  
Foreign Body ◽  
Unusual Case ◽  
Foreign Bodies ◽  
Incidental Finding ◽  
Aerodigestive Tract ◽  
Health Care Practitioners

Diverse foreign bodies may become lodged in the aerodigestive tract, and the discovery of such foreign bodies is an expected scenario for health-care practitioners. The foreign body insertion may be accidental or deliberate, and the object may be organic or inorganic. Most accidental foreign body aspirations occur in children, and some such cases are potential threats that go unnoticed. Very few cases of foreign bodies in the nasopharynx have been reported. Herein, we describe an unusual case in which a foreign body in a child’s nasopharynx went unnoticed for 1 year and was detected intraoperatively.

S elements: a family of Tc1-like transposons in the genome of Drosophila melanogaster.

Genetics ◽  
1995 ◽  
Vol 141 (4) ◽  
pp. 1425-1438 ◽  
Author(s):  
P J Merriman ◽  
C D Grimes ◽  
J Ambroziak ◽  
D A Hackett ◽  
P Skinner ◽  
...  
Keyword(s):  
Drosophila Melanogaster ◽  
Amino Acid ◽  
Transposable Elements ◽  
Sibling Species ◽  
Inverted Repeat ◽  
Open Reading Frame ◽  
Drosophila Species ◽  
Insertion Mutation ◽  
Reading Frame ◽  
Diploid Genome

Abstract The S elements form a diverse family of long-inverted-repeat transposons within the genome of Drosophila melanogaster. These elements vary in size and sequence, the longest consisting of 1736 bp with 234-bp inverted terminal repeats. The longest open reading frame in an intact S element could encode a 345-amino acid polypeptide. This polypeptide is homologous to the transposases of the mariner-Tc1 superfamily of transposable elements. S elements are ubiquitous in D. melanogaster populations and also appear to be present in the genomes of two sibling species; however, they seem to be absent from 17 other Drosophila species that were examined. Within D. melanogaster strains, there are, on average, 37.4 cytologically detectable S elements per diploid genome. These elements are scattered throughout the chromosomes, but several sites in both the euchromatin and beta heterochromatin are consistently occupied. The discovery of an S-element-insertion mutation and a reversion of this mutation indicates that S elements are at least occasionally mobile in the D. melanogaster genome. These elements seem to insert at an AT dinucleotide within a short palindrome and apparently duplicate that dinucleotide upon insertion.

Neuralgia-like symptoms in a patient with an airgun pellet in the ethmoid sinus: a case report

1995 ◽  
Vol 109 (7) ◽  
pp. 646-649 ◽  
Author(s):  
Paul J. Donald ◽  
Arun K. Gadre
Keyword(s):  
Case Report ◽  
Foreign Body ◽  
Surgical Management ◽  
Unusual Case ◽  
Foreign Bodies ◽  
Ethmoid Sinus ◽  
Endoscopic Removal ◽  
Review Of The Literature ◽  
Anatomical Basis

AbstractAn unusual case of a retained airgun pellet in the ethmoid sinus is presented. The patient's only complaint was a severe neuralgic headache. Anatomical basis for this symptom, imaging and successful endoscopic removal of the foreign body are discussed. The philosophy for removal of innocuous foreign bodies, potential pitfalls in surgical management, and a review of the literature are included in the discussion.

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