* Automated digital image analysis of islet cell mass using Nikon's inverted eclipse Ti microscope and software to improve engraftment may help to advance the therapeutic efficacy and accessibility of islet transplantation across centers.
- Reliable assessment of islet viability, mass, and purity must be met prior to transplanting an islet preparation into patients with type 1 diabetes. The standard method for quantifying human islet preparations is by direct microscopic analysis of dithizone-stained islet samples, but this technique may be susceptible to inter-/intraobserver variability, which may induce false positive/negative islet counts. Here we describe a simple, reliable, automated digital image analysis (ADIA) technique for accurately quantifying islets into total islet number, islet equivalent number (IEQ), and islet purity before islet transplantation. Islets were isolated and purified from n = 42 human pancreata according to the automated method of Ricordi et al. For each preparation, three islet samples were stained with dithizone and expressed as IEQ number. Islets were analyzed manually by microscopy or automatically quantified using Nikon's inverted Eclipse Ti microscope with built-in NIS-Elements Advanced Research (AR) software. The AIDA method significantly enhanced the number of islet preparations eligible for engraftment compared to the standard manual method (p < 0.001). Comparisons of individual methods showed good correlations between mean values of IEQ number (r(2) = 0.91) and total islet number (r(2) = 0.88) and thus increased to r(2) = 0.93 when islet surface area was estimated comparatively with IEQ number. The ADIA method showed very high intraobserver reproducibility compared to the standard manual method (p < 0.001). However, islet purity was routinely estimated as significantly higher with the manual method versus the ADIA method (p < 0.001). The ADIA method also detected small islets between 10 and 50 µm in size. Automated digital image analysis utilizing the Nikon Instruments software is an unbiased, simple, and reliable teaching tool to comprehensively assess the individual size of each islet cell preparation prior to transplantation. Implementation of this technology to improve engraftment may help to advance the therapeutic efficacy and accessibility of islet transplantation across centers.
=>に番号をつける, 数, 番号, 総数, 若干, 多数, 曲, 過ごす, 達する, 番号を唱える
Overview of noun number
The noun number has 11 senses (first 9 from tagged texts)
1. (131) number, figure -- (the property possessed by a sum or total or indefinite quantity of units
or individuals; "he had a number of chores to do"; "the number of parameters is small"; "the figure
was about a thousand")
2. (63) number -- (a concept of quantity involving zero and units; "every number has a unique
position in the sequence")
3. (5) act, routine, number, turn, bit -- (a short theatrical performance that is part of a longer
program; "he did his act three times every evening"; "she had a catchy little routine"; "it was one
of the best numbers he ever did")
4. (5) phone number, telephone number, number -- (the number is used in calling a particular
telephone; "he has an unlisted number")
5. (2) numeral, number -- (a symbol used to represent a number; "he learned to write the numerals
before he went to school")
6. (2) issue, number -- (one of a series published periodically; "she found an old issue of the
magazine in her dentist's waiting room")
7. (1) number -- (a select company of people; "I hope to become one of their number before I die")
8. (1) number, identification number -- (a numeral or string of numerals that is used for
identification; "she refused to give them her Social Security number")
9. (1) number -- (a clothing measurement; "a number 13 shoe")
10. number -- (the grammatical category for the forms of nouns and pronouns and verbs that are used
depending on the number of entities involved (singular or dual or plural); "in English the subject
and the verb must agree in number")
11. number -- (an item of merchandise offered for sale; "she preferred the black nylon number";
"this sweater is an all-wool number")
Overview of verb number
The verb number has 6 senses (first 3 from tagged texts)
1. (6) total, number, add up, come, amount -- (add up in number or quantity; "The bills amounted to
$2,000"; "The bill came to $2,000")
2. (2) number -- (give numbers to; "You should number the pages of the thesis")
3. (1) number, list -- (enumerate; "We must number the names of the great mathematicians")
4. count, number -- (put into a group; "The academy counts several Nobel Prize winners among its
members")
5. count, number, enumerate, numerate -- (determine the number or amount of; "Can you count the
books on your shelf?"; "Count your change")
6. number, keep down -- (place a limit on the number of)
--- WordNet end ---