Abstract：
:Suspensions of dispersed acini isolated by enzymatic (collagenase) digestion were used to investigate possible interactions between transmembrane K and Cl movements. The isotopic tracer 36Cl monitored uptake and efflux of Cl under conditions where K efflux was either stimulated or inhibited. Uptake (accumulation) of 36Cl in the absence of experimental manipulation was time-dependent, resulting in a steady-state isotope content of 8.9 +/- 0.2 nmol/mg protein after 3-5 min of incubation. This content was reduced 28 per cent by the K-ionophore, valinomycin (10 microM), which also caused a net efflux of 36Cl (28 per cent) from tracer-preloaded acini. Valinomycin also released 38 per cent of the cellular K content and caused efflux of 86Rb from acini preloaded with this tracer. The efflux of 36Cl induced by 1 microM acetylcholine (23 per cent) was blocked by the K-channel blocker, quinidine (1 mM), and incompletely by apamin (1 mM). Efflux of 36Cl was also blocked by the chloride-channel blocker, 3,5-dichlorophenyl-2-amine-carboxylic acid. Thus, induction of K release (efflux) in these acini is balanced by a parallel efflux of Cl, and blockade of K release inhibits acetylcholine-induced 36Cl efflux, which suggests a functional linkage between these two events. According to current opinion, these ion movements occur, respectively, in the basolateral (K) and apical (Cl) cell membranes, so any linkage implies that the apical Cl conductance can be regulated, at least in part, by changes in membrane potential which are secondary to secretagogue-induced changes in K conductance.(ABSTRACT TRUNCATED AT 250 WORDS)
journal_name
Arch Oral Bioljournal_title
Archives of oral biologyauthors
Martinez JR,Cassity N,Reed Pdoi
10.1016/0003-9969(87)90103-8subject
Has Abstractpub_date
1987-01-01 00:00:00pages
891-5issue
12eissn
0003-9969issn
1879-1506journal_volume
32pub_type
杂志文章abstract：:Counts of cultivable Porphyromonas gingivalis, assays of microbial proteases and the concentration in gingival crevicular fluid of proteoglycan metabolites were investigated at periodontitis and gingivitis sites in 16 patients with chronic adult periodontitis before and after treatment. Two periodontitis sites and two...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/s0003-9969(96)00103-3
更新日期：1997-01-01 00:00:00
abstract：:The effect of this axotomy on the expression of vasoactive intestinal polypeptide (VIP) in trigeminal ganglion neurones and nerve fibres in the first molar was examined immunohistochemically 3 weeks postsurgically in rats. A distinct upregulation of VIP-like immunoreactivity was found in 3 to 4% of the neurones (mean ...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/s0003-9969(98)00009-0
更新日期：1998-03-01 00:00:00
abstract：:Both Sjögren's syndrome and therapeutic irradiation for head and neck cancer lead to irreversible damage of the parenchyma of the salivary glands. This report describes an attempt to grow miniature pig (minipig) parotid gland cells on artificial films and tubular scaffolds with the ultimate intention of developing bio...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/j.archoralbio.2005.10.001
更新日期：2006-05-01 00:00:00
abstract：OBJECTIVE:As shown in the quantitative suspension test adding lactoperoxidase to a thiocyanate (SCN(-)) hydrogen peroxide (H(2)O(2)) combination over the physiological saliva level has significant positive antimicrobial effects to a level of totally killing Streptococcus mutans, Streptococcus sanguinis, and Candida alb...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/j.archoralbio.2011.04.016
更新日期：2011-12-01 00:00:00
abstract：:Culture of the developing dental tissues has contributed to understanding of developmental processes during early odontogenesis. However, to understand fully the mechanisms involved during dentinogenesis and tissue repair there is a need to develop culture models for the dentine-pulp complex from more mature dental ti...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/s0003-9969(98)00029-6
更新日期：1998-06-01 00:00:00
abstract：:Although mechanisms underlying chronic muscle pain are poorly understood, one prevalent theory is that it is due, in part, to localized hypoxia. The purpose of this study was to evaluate this theory using non-invasive near-infra-red spectroscopy that monitors relative changes in intramuscular haemoglobin (Hb) concentr...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/0003-9969(96)00009-x
更新日期：1996-06-01 00:00:00
abstract：OBJECTIVE:Streptococcus mutans is a principal bacterium that forms pathogenic biofilm involved in the development of dental caries. S. mutans possesses a quorum sensing system (QS) stimulated by competence stimulating peptide (CSP), which is associated with bacteriocin production, genetic competency and biofilm formati...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/j.archoralbio.2019.04.010
更新日期：2019-06-01 00:00:00
abstract：:It is well accepted that reduced masticatory function induced by a diet with soft physical consistency causes alterations in the craniofacial morphology in growing animals. It is assumed that these alterations are associated with reduced proliferative activity of osteoblasts on the bone surface, indicating a significa...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/s0003-9969(00)00057-1
更新日期：2000-10-01 00:00:00
abstract：:Homologous tooth transplants evoke immunogenic rejection against antigens within donor periodontal ligaments cells and ground substance. Eight maxillary incisors of 6 juvenile animals were extracted, crowns and pulps removed by gutta percha; the roots were incubated serially in enzyme solutions and glutaraldehyde at 3...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/0003-9969(82)90128-5
更新日期：1982-01-01 00:00:00
abstract：OBJECTIVE:To clarify whether over-eruption of the mandibular third molar can disturb chewing movement. METHODS:Eighteen patients with a unilateral mandibular over-erupted third molar confirmed by both study cast observation and T-scan occlusal detection were selected from a sample of patients with complaints of tempor...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/j.archoralbio.2017.06.012
更新日期：2017-10-01 00:00:00
abstract：OBJECTIVE:To clarify the fluoride/mineral kinetics in an oral biofilm following concurrent application of fluoride and other mineral ions released from experimental toothpaste containing S-PRG filler using depth-specific analysis. STUDY DESIGN:Twenty subjects wore in situ plaque-generating devices, comprised of a pair...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/j.archoralbio.2020.104777
更新日期：2020-09-01 00:00:00
abstract：:To test the hypothesis that human tooth eruption requires a critical time period during which no force is applied to the erupting tooth, the eruption of a maxillary second premolar in the prefunctional stage was recorded during the afternoon or evening hours in eight children, using an optical device based on the prin...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/s0003-9969(99)00011-4
更新日期：1999-05-01 00:00:00
abstract：:The effects of interleukin-1 (IL-1) on the metabolism of two androgenic substrates, testosterone and 4-androstenedione, that can be converted to the potent anabolic metabolite 5 alpha-dihydrotestosterone (DHT) were studied. Duplicate incubations of confluent gingival fibroblasts were made in Eagle's minimum essential ...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/0003-9969(95)00058-w
更新日期：1995-10-01 00:00:00
abstract：OBJECTIVE:To evaluate the association between polymorphisms in DLX1, DLX2, MMP13, TIMP1 and TIMP2 genes with dental fluorosis (DF) phenotype. DESIGN:Four hundred and eighty one subjects (108 with DF and 373 DF free) from 6 to 18 years of age were recruited. This population lived in Rio de Janeiro, a city with fluorida...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/j.archoralbio.2017.01.009
更新日期：2017-04-01 00:00:00
abstract：:Transmission electron microscopy showed that when either dentinal phosphoprotein or calcium-treated phosphoprotein or phosvitin were introduced during type I collagen fibrillogenesis the fibrils formed were significantly wider and the cross-banding was more distinct than in the absence of phosphoprotein. The collagen ...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/0003-9969(93)90068-w
更新日期：1993-09-01 00:00:00
abstract：:The secretions (HPS) contained an arylamidase-like enzyme discovered by chromatography on Sephadex G-100 Superfine columns using N-L-alanyl-2-naphthylamine (2NA) as substrate. The enzyme was fractionated in the void volume, suggesting that its molecular weight was 150,000 or higher. It hydrolysed, with decreasing rate...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/0003-9969(85)90050-0
更新日期：1985-01-01 00:00:00
abstract：OBJECTIVE:The aim of this study was to assess the frequency of variations in tooth number, shape and position in the dental arch to determine if there are parts of the dental arch that show a higher prevalence of tooth variability. DESIGN:198 randomly selected Caucasian subjects (93 females, 105 males) aged between 10...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/j.archoralbio.2011.11.009
更新日期：2012-06-01 00:00:00
abstract：OBJECTIVE:This in vitro study was undertaken to assess the effects of Galla chinensis extract on inhibition of enamel caries-like demineralization and to elucidate the role of the organic matrix of enamel in this process. DESIGN:Either regular or enamel disposed of its organic matrix both of bovine origin were exposed...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/j.archoralbio.2009.06.007
更新日期：2009-09-01 00:00:00
abstract：:These three neuropeptides were measured at daily baseline values by radioimmunoassay. Stimulated parotid saliva was collected from 31 subjects using a modified Carlson-Crittenden device affixed over Stenson's duct. Methionine enkephalin-like immunoreactivity ranged from 6.6 to 11.7 fmol/ml, with a mean of 9.3 fmol/ml....
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/0003-9969(92)90076-k
更新日期：1992-09-01 00:00:00
abstract：:A water-soluble extract of Actinomyces viscosus (AVS) was tested for its capacity to induce DNA synthesis in lymphocytes from man, monkeys, mice and guinea pigs. The results indicated that the AVS induced an in-vitro lymphoproliferative response, as assessed by tritiated thymidine incorporation, in mouse-spleen cells,...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/0003-9969(82)90161-3
更新日期：1982-01-01 00:00:00
abstract：OBJECTIVE:The objective of this systematic review was to assess the impact of nicotine administration on orthodontic tooth movement (OTM). METHODS:A systematic search was conducted in PubMed, Scopus, EMBASE, MEDLINE (OVID) and Web of Knowledge databases and the Preferred Reporting Items for Systematic Reviews and Meta...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/j.archoralbio.2018.05.016
更新日期：2018-09-01 00:00:00
abstract：OBJECTIVE:The aim of the study was to compare the neonatal line width as well as the composition of the pre-natal and post-natal enamel in deciduous teeth of children with cerebral palsy (CP) to deciduous teeth of healthy children. DESIGN:58 extracted or normally exfoliated deciduous teeth were collected for the study...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/j.archoralbio.2019.06.001
更新日期：2019-08-01 00:00:00
abstract：:Destrin, an actin-binding protein, is partly phosphorylated at Ser-2 (numbering on the matured form) in the resting rat parotid gland, and beta-adrenergic or cholinergic stimulation of this gland induces its dephosphorylation. In this study, we searched for the protein kinase involved in phosphorylation of destrin. We...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/s0003-9969(03)00129-8
更新日期：2003-09-01 00:00:00
abstract：OBJECTIVE:Orofacial clefts result from failures of developing embryonic facial and palatal processes to either completely merge or fuse. Normal development of the facial primordia requires remodelling of the extracellular matrix, which is mediated in part by the matrix metalloproteinases (MMPs). MMPs can be considered ...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/j.archoralbio.2007.04.005
更新日期：2007-10-01 00:00:00
abstract：:The transforming growth factor (TGF)-beta superfamily comprises more than 35 structurally related genes that have been implicated in embryonic induction and morphogenesis. Different superfamily members may have distinct regulatory roles in tooth development and maintenance. Degenerate primer sets derived from the high...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/s0003-9969(98)00046-6
更新日期：1998-09-01 00:00:00
abstract：:Fluorescence polarization (FP) was examined as a rapid quantitative method to assay the proteases in subgingival plaque. Protease activity was measured by a decrease in FP at 0.5-min intervals over 5 min, using BODIPY-alpha-casein, a protein substrate. To quantitate activity, the least absolute deviation (LAD) slope f...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/s0003-9969(00)00073-x
更新日期：2000-12-01 00:00:00
abstract：UNLABELLED:Adaptive remodelling of the mandibular condyle in response to mandibular advancement is the mechanism exploited by orthodontic forward displacement devices. OBJECTIVE:This work investigated the expression of collagens, matrix metalloproteinases and vascular endothelial growth factor during this process. DE...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/j.archoralbio.2011.09.017
更新日期：2012-06-01 00:00:00
abstract：OBJECTIVE:We have shown that buccal epithelial cells (BEC) from humans can contain a polymicrobial intracellular flora. Members of that flora can induce proinflammatory responses. However, our subjects all had healthy oral mucosa. This might reflect tolerance of bacterial invasion by live BEC. Alternatively, inflammati...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/j.archoralbio.2005.09.003
更新日期：2006-04-01 00:00:00
abstract：:There may be deleterious effects if there is an age-dependent reduction in mucin composition or content in salivary glands. To assess whether there was an effect of age in submandibular glands from male mice aged 3 months, 10 and 20 months and 27, 29 and 30 months, mucin, protein and sialic acid were quantitated. Chan...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/0003-9969(91)90139-l
更新日期：1991-01-01 00:00:00
abstract：OBJECTIVE:Polymorphonuclear neutrophils (PMNs) are the most abundant innate immune cells and are also important effectors in the maintenance of oral health. However, little is known about the effects of saliva on the PMN. We therefore aimed to investigate the effect of saliva on the PMNs' morphology and functioning. D...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/j.archoralbio.2018.04.019
更新日期：2018-08-01 00:00:00
