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41.
Taguchi S Tagawa K Humphreys T Nishino A Satoh N Harada Y 《Development genes and evolution》2000,210(1):11-17
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Salvatore Massa Marisa Caruso Francesca Trovatelli Massimo Tosques 《World journal of microbiology & biotechnology》1998,14(5):727-730
In order to recover as many viable bacteria as possible from natural mineral water, in this study we have compared the counts obtained with the standard method (pour plate procedure with Plate Count Agar (PCA)) and counts with alternative test methods (PCA/spread plates, R2A medium/pour plates and R2A medium/spread plates). The results showed that counts with R2A medium/spread plates at 22°C and after a 7-day incubation period were more than 343% higher than those obtained with PCA/pour plate method. At 37°C and after a 3-day incubation period, the R2A pour plate technique gave counts about 368% greater than for the standard method. Moreover, while Pseudomonas, Comamonas and Acinetobacter species were isolated both from PCA and R2A medium, Flavobacterium spp. and Arthrobacter spp. were isolated only from R2A medium. For its higher productivity, R2A medium should be recommended for heterotrophic plate counts in natural mineral water. 相似文献
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Kevin W. Millsapa Henny C. van der Meia Rolf Bosa Henk J. Busschera 《FEMS microbiology reviews》1998,21(4):321-336
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Vladimír Hojka Petr astný James J. Tufano Dan Omcirk Martin T. Janikov Martin Komarc Radim Jebavý 《Biology of sport / Institute of Sport》2022,39(2):341
Manufacturers recommend that linear position transducers (LPTs) should be placed on the side of a barbell (or wooden dowel) to measure countermovement jump (CMJ) height, but the validity and reliability of this placement have not been compared to other attachment sites. Since this recommended attachment site is far from the centre of mass, a belt attachment where the LPT is placed between the feet may increase the validity and reliability of CMJ data. Thirty-six physical education students participated in the study (24.6 ± 4.3 years; 177.0 ± 7.7 cm; 77.2 ± 9.0 kg). Parameters from the two LPT attachments (barbell and belt) were simultaneously validated to force plate data, where the nature of bias was analysed (systematic vs random). The within-session and between-session reliability of both attachment sites were compared to force plate data using a test-retest protocol of two sets of 5 CMJs separated by 7 days. The LPT provided highly reliable and valid measures of peak force, mean force, mean power, and jump height, where the bias was mostly systematic (r2 > 0.7; ICC > 0.9). Peak velocity, mean velocity, and peak power were in very good agreement with the force plate and were highly reliable (r2 > 0.5; ICC > 0.7). Therefore, both attachment sites produced similar results with a systematic bias compared to force plate data. Thus, both attachment sites seem to be valid for assessing CMJs when the measuring tool and site remain consistent across measurements. However, if LPT data are to be compared to force plate data, recalculation equations should be used. 相似文献
48.
Gergely Groma Ivan Grskovic Sylvia SchaelHarald W.A. Ehlen Raimund Wagener Amanda FosangAttila Aszodi Mats Paulsson Bent Brachvogel Frank Zaucke 《Matrix biology》2011,30(4):275-280
The two aggrecanases ADAMTS-4 and ADAMTS-5 have been shown to not only play roles in the breakdown of cartilage extracellular matrix in osteoarthritis, but also mediate processing of matrilins in the secretory pathway. The matrilins are adaptor proteins with a function in connecting fibrillar and network-like components in the cartilage extracellular matrix. Cleavage resulting in processed matrilins with fewer ligand-binding subunits could make these less efficient in providing matrix cohesion. In this study, the processing and degradation of matrilin-4 during cartilage remodeling in the growth plate of the developing mouse long bones were studied in greater detail. We show that ADAMTS-5 and a matrilin-4 neoepitope, revealed upon ADAMTS cleavage, colocalize in prehypertrophic/hypertrophic chondrocytes while they are not detected in proliferating chondrocytes of the growth plate. ADAMTS-5 and the cleaved matrilin-4 are preferentially detected in vesicles derived from the Golgi apparatus. The matrilin-4 neoepitope was not observed in the growth plate of ADAMTS-5 deficient mice. We propose that in the growth plate ADAMTS-5, and not ADAMTS-4, has a physiological function in the intracellular processing of matrilins and potentially of other extracellular matrix proteins. 相似文献
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The freshwater type of ninespine sticklebacks, genus Pungitius, is widely distributed in northern Japan and reproductively isolated from other genetically divergent types endemic to small
regions in Japan. This type expresses dimorphism in its lateral plate morphology: complete and partial row morphs. The two
morphs show a parapatric distribution in Japan. To clarify the process involving the distribution of these two morphs, we
examined their phylogeography based on restriction fragment length polymorphism of an entire mitochondrial DNA (mtDNA). The
survey was carried out with seven restriction enzymes on the populations of the freshwater type collected from 41 localities
across the distribution range in Japan, and 6 further Pungitius populations from the Okhotsk Sea coast of Russia were appended. An unweighted pair-group method with arithmetic averages
(UPGMA) tree among 54 mtDNA haplotypes resolved eight clustering groups that differed in sequence divergence by approximately
1.3%–2.1%. Two of the eight groups were found only in Russia. mtDNA phylogenies constructed by neighbor-joining and Wagner
parsimony methods suggested that the haplotypes of each plate morph were polyphyletic. The geographic distribution pattern
of these groups suggests that they should be classified into two broad categories, one with extensive distribution and the
other with localized distribution of the constituent haplotypes within a group. The former groups were found mainly in the
populations with the completely plated morph and the latter groups with the partially plated morph. It is supposed that twice
dispersals of dimorphic or complete plated ancestors and genetic differentiation during the interglacial played an important
role in the formation of the present distribution of the two morphs in Japan.
Received: March 28, 2000 / Revised: November 3, 2000 / Accepted: January 16, 2001 相似文献