What's the difference between actinomycosis and holdfast?
Actinomycosis
Definition:
Example Sentences:
(1) These findings confirm the association between IUD use and pelvic actinomycosis; a review of the literature reveals 395 such cases.
(2) A case of renal actinomycosis, treated by nephrectomy, in a 41 year-old male, is reported.
(3) The histological findings of actinomyces spores, thread-like foreign material and detritus drew out attention to the rare manifestation of abdominal actinomycosis.
(4) The literature on this relatively rare bacterial disease which histologically resembles actinomycosis is reviewed.
(5) The chest radiographs and computed tomographic (CT) scans obtained in eight patients with pathologically proved cases of thoracic actinomycosis were independently reviewed by two observers.
(6) A case of abdominal actinomycosis originating from the sigmoid colon is presented.
(7) Actinomycosis is a relatively rare chronic granulomatous infection, which is characterized by the formation of abscesses which tend to form fistulas.
(8) Other important bacterial infections of potential concern are tuberculosis, Johne's disease, anthrax, malignant edema, actinomycosis, tetanus, and the South American condition referred to as alpaca fever, which, to date, has not been observed in North America.
(9) Intravenous penicillin and clindamycin were used for treatment of the actinomycosis and bacteroids that were cultured from the abscesses.
(10) The diagnosis of actinomycosis usually is made at surgery.
(11) Physicians should consider actinomycosis in acute abdominal sepsis cases with a longterm use of an IUD.
(12) Concomitant intestinal actinomycosis, known to produce tumorous lesion without eosinophilia, appears as an attractive natural model in producing tumorous eosinophilic enterocolitis.
(13) In the past three years, four cases of thoracic actinomycosis have been found in children at our hospital.
(14) The first case, to our knowledge, of cervicofacial actinomycosis arising in a patient with evidence of infection by the human T-cell lymphotrophic virus type III, the causal agent of the acquired immunodeficiency syndrome, is reported.
(15) Abdominal wall actinomycosis without pelvic organ involvement in users of intrauterine contraceptive devices (IUDs) has not been reported on previously.
(16) One had coincidental rheumatoid arthritis, and another had actinomycosis of the ipsilateral middle ear and contralateral parotid gland.
(17) We suggest that diverticular strictures and actinomycosis may coexist more often than the literature suggests.
(18) The presence of intrabony abscesses in rat mandibles following surgical trauma supports the clinical observation that antecedent trauma is an important factor in the pathogenesis of cervicofacial actinomycosis.
(19) We present a case of cervicofacial actinomycosis and its treatment, emphasizing on the difficulty of the diagnosis of the lesion.
(20) Actinomycosis of the female genital tract is the subject of this brief review article, which adds 4 new cases to 300 previously reported.
Holdfast
Definition:
(n.) Something used to secure and hold in place something else, as a long fiat-headed nail, a catch a hook, a clinch, a clamp, etc.; hence, a support.
(n.) A conical or branching body, by which a seaweed is attached to its support, and differing from a root in that it is not specially absorbent of moisture.
Example Sentences:
(1) In addition, distribution of lead and cadmium varied within the individual producer (Fucus vesiculosus) in such a way that the holdfast exhibited the highest concentration followed by the apcial tip and the branches of the first dichotomy was the lowest.
(2) Thus, we propose that the attachment of the holdfast to the cell is a true adhesion process and that the stalk tip and base of the flagellum must have compositions distinctly different from that of the remainder of the caulobacter cell surface.
(3) Upon closer examination, they were distinguishable on the basis of protein band profiles on polyacrylamide gel electrophoresis, gross colony characteristics, or holdfast composition or by DNA restriction fragment length polymorphism analysis with flagellin and S-layer gene probes.
(4) The mutant could also attach to the discarded holdfast produced by a shedding mutant.
(5) Also, attachment to the cell is accomplished by bond formations that occur not only at the time of holdfast production.
(6) One class of mutants made a normal holdfast by all available criteria, yet the attachment to the cell was very weak, such that the holdfast was readily shed.
(7) Once attached the bacterium appears to undergo a complex life cycle which involves the development of a long filament divided into a number of segments within which holdfasts or spores are formed.
(8) Deletion and complementation analysis of the hfaAB locus revealed two genes in a single operon; both were required for holdfast attachment to the cell.
(9) The structure and distribution of papillae suggest that the ventral sucker likely functions as a holdfast organ and the oral sucker as a probing organ involved in feeding.
(10) The formation of the holdfast, cell walls and septa is followed.
(11) Within each mother cell two new holdfast segments developed.
(12) The paunch epithelium was densely colonized by bacteria, many of which possessed holdfast elements that secured them tightly to this tissue and to other bacterial cells.
(13) Caulobacters attach to surfaces in the environment via their holdfasts, attachment organelles located at the base of the flagellum in swarmer cells and later at the end of the cellular stalk in the stalked cells which develop from the swarmer cells.
(14) Taken together, the data support the interpretation that there is a specialized attachment site for the holdfast at the base of the flagellum which later becomes the end of the stalk, but not a specialized region of the holdfast for attachment to this site.
(15) The bacterium is attached to the epithelial cell by a special segment (holdfast) and causes specific changes in the epithelial cell at the site of attachment.
(16) This was unexpected, since holdfast deficiency is often a characteristic of pleiotropic mutants obtained when selecting for loss of other polar structures.
(17) This information suggests that the protein encoded by the hfaA locus may have a direct role in the attachment of the holdfast to the cell, whereas hfaB may be involved in the positive regulation of hfaC.
(18) A single prostheca extends from one pole of mature cells, and cells attach to various substrata by means of a holdfast located at the distal tip of the appendage.
(19) However, there was no subsequent division, or flagellum or holdfast synthesis.
(20) Alternately, in some filaments, newly formed but not yet released holdfasts were converted into endospores, which were released in the same manner as holdfasts, presumably to spread the bacterial colony to other members of the rodent population.