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PubMed1988

Vibrio cholerae O1 adherence to villi and lymphoid follicle epithelium: in vitro model using formalin-treated human small intestine and correlation between adherence and cell-associated hemagglutinin levels.

Formalin-fixed human small intestinal mucosa possessing villi and lymphoid follicle epithelium of Peyer's patches at the mucosal surface was used to test the adherence ability of clinically isolated strains of Vibrio cholerae O1. V. cholerae O1 grown on CFA agar for approximately 3 h at 37 degrees C had various levels of cellular hemagglutinins (HAs) and manifested adherence abilities that were roughly correlated with the cellular HA levels, irrespective of cellular HA types. V. cholerae O1 adhered better to epithelium over ileal lymphoid follicles than to epithelium of jejunal or ileal villi. Cells of different morphology which constituted lymphoid follicle epithelium were almost equal targets for adherence. In contrast, V. cholerae O1 grown on CFA agar for approximately 20 h at 37 degrees C in many cases had lower levels of cellular HAs and adherence abilities. Contrary to the above observations with cellular HAs and adherence, piliation of V. cholerae O1 was rather more extensive at approximately 20 h of incubation at 37 degrees C than at approximately 3 h of incubation at 37 degrees C. L-Fucose inhibited adherence to a varied extent depending on the cellular HA types, while D-mannose enhanced adherence in some strains. Heating of V. cholerae O1 diminished adherence ability. This adherence model system provides a tool by which various V. cholerae O1 strains can be preliminarily tested for adherence ability and site in human small intestine.

Animals↗

PubMed2026

The impact of pharmacogenetic-informed care on medication adherence and psychological factors associated with adherence: A narrative review.

Improvement in medication adherence is often proposed as a potential advantage of pharmacogenetic-guided prescribing over a traditional one-size-fits-all approach. This paper provides a review of the published literature and presents the findings of studies that measure adherence to medication as an outcome of pharmacogenetic-informed care, or that measure the impact of pharmacogenetic-informed care on psychological factors that are associated with medication adherence. Adherence-related psychological factors are mapped to the Theoretical Domains Framework (TDF) to provide insight into how participants interact with pharmacogenetic-informed care as an intervention and to consider this in the context of medication adherence. A total of 23 studies were included, with 10 quantitative studies measuring medication adherence outcomes associated with pharmacogenetic-informed care. Five of these studies found a statistically significant improvement in adherence in the pharmacogenetic-tested group, two reported a small but non-significant trend, and three showed no difference. Additionally, 13 studies examined the impact of pharmacogenetic-informed care on psychological factors related to adherence. These factors were mapped to 10 TDF domains: knowledge (8 studies); social/professional role and identity (1); beliefs about capabilities (2); optimism (4); beliefs about consequences (10); intentions (5); goals (1); memory, attention and decision processes (7); social influences (4); and emotion (8). The findings suggest that although the evidence for pharmacogenetic-informed care improving medication adherence is mixed and limited, pharmacogenetic-informed care appears to positively influence psychological factors that may support adherence. These include improving knowledge, supporting decision-making and generally being perceived as a positive experience by patients.

adherence↗

PubMed1980

Superoxide assay-leukocyte adherence inhibition test and a soluble factor which stimulates the adherence of macrophages.

A modified method for the leukocyte adherence inhibition test is described. Peritoneal cells from immune guinea pigs or peripheral mononuclear cells from cancer patients were incubated with immunizing antigen or tumor extract in a 4-mm-wide glass microcell for spectrophotometer analysis. Instead of visual cell counting, the cells adherent to the bottom of the microcell were stimulated with cytochalasin E and wheat germ agglutinin, and the amount of the superoxide (O2.-) generated from the adherent macrophages or monocytes was assayed. Antigen-specific adherence inhibition of peritoneal cells of the immunized guinea pigs was detected 2 weeks after immunization. In contrast, cell adherence was stimulated after 3 weeks. It was shown that a soluble factor was responsible for the adherence stimulation and that nonadherent cells were necessary for its production. Peripheral mononuclear cells of 70% of the tumor-bearing lung cancer patients reacted to the lung tumor extract (9 adherence inhibitions and 7 adherence stimulations per 23 patients). Twenty-five % (3 of 12) of tumor-free patients showed positive reactions, all with adherence stimulation. Of the 12 healthy donors, 3 cases of pneumonia, one case of angiosarcoma of the left flank, one case of hemangiopericytoma of the mediastinum, and 8 cases of breast cancer, non reacted with the lung tumor extract, and only one of 7 lung tuberculosis patients showed positive adherence stimulation.

Animals↗

PubMed2000

Interventions for promoting adherence to tuberculosis management.

BACKGROUND: Up to half the people with tuberculosis do not complete their treatment. Strategies to improve adherence to treatment can be targeted at the person with the disease or at health workers. OBJECTIVES: The objective of this review was to assess the effects of promoting adherence to anti-tuberculosis treatment and completion of diagnostic protocols for TB. SEARCH STRATEGY: We searched the Cochrane Collaboration Trials, the Cochrane Effective Professional Practice Group trials register, the Cochrane Infectious Diseases Group trials register, Medline, Embase, Lilacs and reference lists of articles. We contacted experts in the field. SELECTION CRITERIA: Randomised and quasi-randomised trials of interventions to promote adherence with curative or preventive chemotherapy and diagnostic protocols for tuberculosis. DATA COLLECTION AND ANALYSIS: Two reviewers independently assessed trial quality and extracted data. MAIN RESULTS: Eleven trials were included. Reminder cards sent to defaulters, a combination package of a monetary incentive and health education and more supervision of tuberculosis clinic staff increased the number of people completing their tuberculosis treatment. Direct observation by clinic nurses of people swallowing their tuberculosis drugs did not increase the likelihood of treatment success. Return to the clinic for reading of a tuberculin skin test was enhanced by monetary incentives, assistance by lay health workers, contracts and telephone prompts but not by health education. REVIEWER'S CONCLUSIONS: We have found evidence of benefit for a number of specific interventions to improve adherence to anti-tuberculous therapy and completion of diagnostic protocols. These should be implemented by health care providers where appropriate to local circumstances. Future studies in low income countries are a priority and should measure adherence as well as clinical outcomes.

Antitubercular Agents↗

PubMedDate not supplied

Neutral red uptake inhibition in adhered and adhering rat hepatoma-derived Fa32 cells to predict human toxicity.

The cytotoxicity of the MEIC (Multicentre Evaluation of In vitro Cytotoxicity) reference chemicals was investigated by measuring the neutral red uptake inhibition in adhered and adhering rat hepatoma-derived Fa32 cells. The adhered cells were seeded and then treated and the adhering cells were treated simultaneously upon seeding. Five of the 44 test chemicals were twofold more toxic in adhering cells; ethylene glycol was 28-fold more toxic and mercuric chloride was 5.2-fold more toxic than in adhered cells. The cytotoxicity of dithiothreitol was altered in the same way as that of ethylene glycol, probably by interacting with calcium. When the neutral red uptake inhibition was compared with human toxicity, the correlation coefficient for adhering cells was almost identical to that obtained previously in human hepatoma-derived Hep G2 cells and slightly higher for adhered cells. The Hep G2 assay was the best acute in vitro assay for the prediction of human toxicity within the MEIC study. An obviously better correlation was obtained when the strong intoxicant mercuric chloride was withdrawn from the comparison, both for the adhered and the adhering cells. Altogether, the results can be integrated very well with the basal cytotoxicity concept.

Animals↗

PubMed2003

Stability of adherence to highly active antiretroviral therapy over time among clients enrolled in the treatment adherence demonstration project.

Adherence to antiretroviral medications is essential to therapeutic success. Many published studies have investigated the degree of adherence or nonadherence, but sample sizes have generally been small, and adherence has seldom been viewed as a longitudinal process. This paper investigates the stability of adherence over time among HIV-infected individuals attending adherence support programs in New York State. The study cohort consists of 435 clients who were on HAART at baseline and who completed at least 2 follow-up interviews. Although cross-sectional nonadherence did not exceed 35%, nonadherence reached 54% when considered across all 3 interviews. Analysis of transition matricies revealed moderate stability in adherence over time (e.g., first follow-up adherence was 81.0% for clients adherent at baseline, compared with 58.3% for clients nonadherent at baseline). Second-order transition matricies offered additional predictive utility. Multivariate results indicated that, for some, it was the transition from a desirable to an undesirable state (e.g., from no illicit drug use to illicit drug use) that increased the likelihood of nonadherence, rather than the presence of these characteristics over time. Findings illustrate the importance of multiple, periodic assessments of adherence and the need to consider strategies to increase stability in the factors affecting adherence to HAART.

Adult↗

PubMed2004

Calcium oxalate crystal adherence in the rat bladder: restoration of anti-adherence after acid treatment.

PURPOSE: A role for the mucous lining of the urinary tract to prevent crystal adherence as well as the ability of glycosaminoglycans and other substances to restore anti-adherence after removal of the mucous lining was studied in the rat bladder. MATERIALS AND METHODS: Following catheterization of the rat bladder a dilute solution of acid was introduced, which has been shown to remove the mucous lining. Sialic acid, hyaluronic acid, chondroitin sulfate, dermatan sulfate, heparin, pentosan polysulfate and urine were introduced into the bladder in an attempt to restore the anti-adherence properties removed by acid treatment. Radioactive calcium oxalate crystals were introduced into the bladder, followed by saline washes, and the crystals remaining were used as a measure of crystal adherence. Controls were mucous intact and acid treated bladders. RESULTS: Hyaluronic acid, chondroitin-6-sulfate and chondroitin-4-sulfate did not influence adherence. Dermatan sulfate, heparin and pentosan polysulfate restored anti-adherence, while sialic acid and urine promoted adherence. CONCLUSIONS: The mucous lining of the urinary tract serves as a defense against calcium oxalate crystal adherence. Dermatan sulfate decreases crystal adherence, whereas sialic acid promotes adherence. The balance between these 2 factors may have a role in stone formation.

Acids↗

PubMed1993

Pilus-facilitated adherence of Neisseria meningitidis to human epithelial and endothelial cells: modulation of adherence phenotype occurs concurrently with changes in primary amino acid sequence and the glycosylation status of pilin.

Adherence of capsulate Neisseria meningitidis to endothelial and epithelial cells is facilitated in variants that express pili. Whereas piliated variants of N. meningitidis strain C311 adhered to endothelial cells in large numbers (> 150 bacteria/cell), derivatives containing specific mutations that disrupt pilE encoding the pilin subunit were both non-piliated and failed to adhere to endothelial cells (< 1 bacterium/cell). In addition, meningococcal pili recognized human endothelial and epithelial cells but not cells originating from other animals. Variants of strain C311 were obtained that expressed pilins of reduced apparent M(r) and exhibited a marked increase in adherence to epithelial cells. Structural analysis of pilins from two hyper-adherent variants and the parent strain were carried out by DNA sequencing of their pilE genes. Deduced molecular weights of pilins were considerably lower compared with their apparent M(r) values on SDS-PAGE. Hyper-adherent pilins shared unique changes in sequence including substitution of Asn-113 for Asp-113 and changes from Asn-Asp-Thr-Asp to Thr-Asp-Ala-Lys at residues 127-130 in mature pilin. Asn residues 113 and 127 of 'parental' pilin both form part of the typical eukaryotic N-glycosylation motif Asn-X-Ser/Thr and could potentially be glycosylated post-translationally. The presence of carbohydrate on pilin was demonstrated and when pilins were deglycosylated, their migration on SDS-PAGE increased, supporting the notion that variable glycosylation accounts for discrepancies in apparent and deduced molecular weights. Functionally distinct pilins produced by two fully piliated variants of a second strain (MC58) differed only in that the putative glycosylation motif Asn-60-Asn-61-Thr-62 in an adherent variant was replaced with Asp-60-Asn-61-Ser-62 in a non-adherent variant. Fully adherent backswitchers obtained from the non-adherent variant always regained Asn-60 but retained Ser-62. We propose, therefore, that functional variations in N. meningitidis pili may be modulated in large part by primary amino acid sequence changes that ablate or create N-linked glycosylation sites on the pilin subunit.

Amino Acid Sequence↗

PubMed1980

Identification of the major adherence ligand of Klebsiella pneumoniae in the receptor for coliphage T7 and alteration of Klebsiella adherence properties by lysogenic conversion.

We have studied the adherence of both laboratory and wild-type Klebsiella pneumoniae strains, isolated from sputum, urine, and stool samples, to human buccal and intestinal and urinary tract epithelial cells. Of 32 unencapsulated strains, 30 adhered to all epithelial cells tested. Four K. pneumoniae strains lysogenic for AP3, a phage which causes conversion to resistance of coliphages T3, T7, and phi I, were all unable to adhere to epithelial cells. One of these strains was cured from phage infection and became capable of adhering, Spontaneous mutants resistant to coliphage T7, as well as K. pneumoniae K59-sensitive cells preadsorbed with inactivated T7 particles, did not adhere to epithelial cells. All strains capable of adhering were able to adsorb coliphage T7 and T3, whereas all nonadhesive strains were not. AP3-like prophages were induced from 7 of 12 nonadhesive Klebsiella strains. A laboratory strain which was able to adhere was lysogenized with 2 of these phages. In both cases, the strain lost its ability to adsorb coliphages T3, T7, and phi I and to adhere to human epithelial cells. All K. pneumoniae adhesive strains agglutinated yeast cells, whereas the nonadhesive strains did not. Competition studies have shown that D-mannose and concanavalin A prevented adherence to human epithelial cells, yeast agglutination, and adsorption of coliphage T7 to K. pneumoniae cells. It is concluded that in K. pneumoniae adherence to epithelial cells is mediated by the receptor for coliphages T7 (and T3), which in turn recognizes D-mannose in the receptors it binds.

Cell Adhesion↗

PubMedDate not supplied

Evaluation of the Patient Medication Adherence Questionnaire as a tool for self-reported adherence assessment in HIV-infected patients on antiretroviral regimens.

PURPOSE: Adherence to antiretroviral medications is critically important for the success of therapy in patients treated for HIV infection. Patient self-report is a simple method to measure and explore adherence. Even though a variety of surveys have been developed to monitor self-reported adherence, there is no standardized instrument that may be used in routine clinical practice. The usefulness of the Patient Medication Adherence Questionnaire (PMAQ) was evaluated in HIV-infected patients on protease inhibitor (PI)-containing regimens. METHOD: Data from 149 patients were collected. Study participants completed the PMAQ and provided blood samples to measure plasma HIV-1 RNA concentrations and trough plasma levels of PI. Patients were considered adherent if they had a virologic response and/or had an adequate trough plasma level of PI. RESULTS: A close relationship was found between patient reports of adherence during the previous 4 days and objective measures such as HIV RNA level and plasma levels of PI. Motivation with regard to antiretroviral treatment, confidence in personal skills, and an optimistic attitude to life were identified as important determinants of adherence. On the other hand, sociodemographic background, social support, alcohol and illicit drug use, bothersome symptoms, and depression were not associated with a lower medication adherence. CONCLUSION: Patients' psychological and behavioral factors are central in the acceptance and adherence to antiretroviral therapy. To improve the feasibility and the reproducibility of the PMAQ, we propose a revised form of the PMAQ, focusing on the variables identified as strong predictors of adherence.

Adult↗

PubMed1982

Complement-mediated leukocyte adherence to infective larvae of Dipetalonema viteae (Filarioidea): requirement for eosinophils or eosinophil products in effecting macrophage adherence.

The present study reports the existence of C-mediated adherence of eosinophils and/or macrophages to filarial infective larvae of Dipetalonema viteae. C3 molecules are present on the surface of the parasite, as shown by immunofluorescence studies. Samples of fNRS depleted of AP of complement by treatment with Zymosan A or of factor B by heating at 50 degrees C for 20 min fail to mediate cell adherence to the parasite. In contrast, fNRS inactivated for CP of complement by the chelating agent EGTA retains its activity in mediating cell adherence to the parasite. There is a significant consumption of factor B and AP of complement when infective larvae are incubated in fNHS. Consumption of C4 of the CP of complement is much lower in the same test. The adherence of macrophages cannot occur without the simultaneous presence of eosinophils, whereas eosinophils probably act alone and not in concert with macrophages. The eosinophil adherence is associated with degranulation. The damage is notably enhanced by replacing the spent eosinophil population with a newly obtained population. In the present test system, mast cells did not adhere to filarial larvae even when mast cell-rich populations were used, nor did they effect macrophage adherence when presented in association with the latter. When eosinophil-enriched cell populations containing less than 1% mast cells were used, cell adherence to filarial larvae still occurred, but the presence of 30% mast cells in such cell populations markedly increased both the rate and level of adherence. We suggest that a cell-mediated adherence and destruction dependent upon the activation of complement via AP, without a requirement for specific antibody, may represent a natural mechanism of parasite killing in a nonimmune host.

Animals↗

PubMed2005

First line treatment of knee osteoarthritis in outpatients in France: adherence to the EULAR 2000 recommendations and factors influencing adherence.

OBJECTIVES: To document adherence to two parts of the EULAR 2000 recommendations for knee osteoarthritis, concerning non-pharmacological and pharmacological first line management; and to identify factors influencing adherence to the recommendations. METHODS: In a prospective study, 1030 randomly selected French general practitioners completed questionnaires about three unselected outpatients with osteoarthritis, and about their own practice, knowledge, and agreement with the EULAR 2000 recommendations. Percentages of adherence of their prescriptions to both parts of the recommendation were calculated, and probabilities of non-adherence analysed in relation to patient and physician related characteristics, using multilevel logistic regression analysis. RESULTS: Data were obtained from 967 physicians and 2430 patients. The EULAR 2000 recommendations were familiar to 79% of the GPs; 99% agreed with the non-pharmacological part and 97% with the pharmacological part. Adherence to the two parts was 74.8% and 73.6%, but 54.2% for both together. Factors increasing adherence to the non-pharmacological recommendation were patient body mass index >35 kg/m(2) (odds ratio 0.11 (95% confidence interval, 0.06 to 0.21)), patient's stated preference for a treatment (OR 0.43 (0.55 to 0.97)), and physician's regular continuance of medical education (OR 0.76 (0.59 to 0.98)); patient's age and duration of symptoms decreased adherence. Factors increasing adherence to the pharmacological recommendation were gastrointestinal disease (OR 0.50 (0.35 to 0.72)) and physician's knowledge of the EULAR recommendations (OR 0.75 (0.60 to 0.93)). CONCLUSIONS: Although most physicians agreed with the EULAR 2000 recommendations, adherence was only approximately 75% for each of the non-pharmacological and pharmacological recommendations and 54% for both together.

Adult↗

PubMed2005

The psychological well-being and self-efficacy of carers of children with disabilities following attendance on a simple massage training and support programme: a 12-month comparison study of adherers and non-adherers.

OBJECTIVES: The Training and Support Programme (TSP) is an 8-week programme in which carers of children with disabilities receive instruction in simple massage techniques to use with their child. The aims of the present study were firstly to compare, adherers and non-adherers on measures of psychological well-being and self-efficacy and secondly, to examine whether, for adherers, the positive benefits of attending the TSP reported immediately after the Programme were maintained at 12-month follow-up. DESIGN: Eighty-two carers took part in the study. Data were collected 12-months after completion of the TSP by self-report questionnaires mailed to carers. For comparisons between adherers and non-adherers at 12-month follow-up a between-groups design was used. For comparisons over time, a within-subjects design was used. RESULTS: Adherers had significantly higher levels of self-efficacy for managing their child's psychosocial well-being, self-efficacy for carrying out the massage, and significantly better psychological well-being at follow-up compared to non-adherers. Furthermore, there were no significant differences over time on self-efficacy for managing their child's psychosocial well-being, self-efficacy for giving massage and levels of anxiety and depression at 12-month follow-up for adherers, suggesting that their improvements noted immediately post-programme were maintained at follow-up. Significant decreases on self-efficacy and depression were noted for non-adherers and there was a trend towards deterioration in anxious mood. CONCLUSION: In conclusion, the present study suggests that the positive benefits the TSP has for carers of children with disabilities can be maintained if carers continue to practise the massage at home with their child.

Adult↗

PubMed2006

Stealth monitoring of adherence to topical medication: adherence is very poor in children with atopic dermatitis.

BACKGROUND: Atopic dermatitis is a common problem for which topical agents are the primary treatment. When topical medications fail, further therapy may include systemic agents with the potential for greater toxicity. Adherence to topical treatment of atopic dermatitis has not been well characterized. Poor adherence to topical medication could account for failure of topical therapy. PURPOSE: To determine adherence to topical treatment in patients with atopic dermatitis. METHODS: Thirty-seven children were given 0.1% triamcinolone ointment and were counseled to use it twice daily. They were told to return in 4 weeks, at which time they were told to continue treatment for another 4 weeks. Electronic monitors were used to measure adherence over the entire 8 week study. Patients were not informed of the compliance monitoring until the end of the study. RESULTS: Twenty-six patients completed 8 weeks of treatment. Mean adherence from the baseline to the end of the study was 32%. Adherence was higher on or near office visit days and subsequently decreased rapidly. LIMITATIONS: This study was limited by the large number of subjects who failed to return for follow-up appointments or withdrew from the study. CONCLUSIONS: Adherence to topical medications is very poor in a clinic population of children with atopic dermatitis. Office visits are one means to increase adherence. If adherence to topical treatment can be improved, exposure to more costly and potentially toxic systemic agents may be avoidable.

Administration, Topical↗

PubMed1985

Further characterization of bacterial adherence to urinary bladder mucosa: comparison with adherence to anion exchange resin.

Bacterial adherence to anion exchange resin has recently been reported to provide a useful, rapid, in vitro screening assay for identifying putative antiadherence agents. The studies presented in this report provide additional evidence that adherence to anion exchange resin is similar to urinary bladder mucosa adherence. Results are as follows. 1) Heparin inhibits the adherence of Escherichia coli, Klebsiella ozaenae, Proteus mirabilis, Streptococcus fecalis and Pseudomonas aeruginosa to both the mucin deficient bladder and anion exchange resin. 2) Drugs which inhibit E. coli adherence to the bladder also inhibit E. coli adherence to the resin and conversely, drugs which do not effect E. coli adherence to the resin do not affect attachment to the bladder. 3) Extracts from mammalian urinary bladder mucosa prevent E. coli adherence to both the bladder and resin. 4) The ability of heparin to displace preattached bacteria from anion exchange resin is inversely proportional to the time the bacteria are in contact with resin. Similar results were obtained for the ability of heparin to displace bacteria from the bladder. These studies indicate that bacterial adherence to anion exchange resin responds to heparin and other chemical agents in a manner similar to the mucin deficient rabbit urinary bladder. Because of the ease and rapid nature of this in vitro assay, it serves as a useful screen for potential bacterial antiadherence agents and could be used to help elucidate mechanisms of bacterial attachment.

Adhesiveness↗

PubMed2006

The patient's perspective: adherence or non-adherence to asthma controller therapy?

STUDY OBJECTIVE: Adherence with controller therapy poses a major challenge to the effective management of persistent asthma. The aim of this study was to explore the patient-related aspects of adherence among adult asthmatics. DESIGN AND PARTICIPANTS: The participants (n = 509 adult asthmatics), recruited from all parts of Denmark, answered the questionnaire concerning asthma knowledge, attitudes, adherence, and treatment through the Internet. RESULTS: A total of 67% of the patients were prescribed inhaled corticosteroids (ICS). However, according to Global Initiative for Asthma (GINA)-guidelines' symptom severity classification, 85% should have been on ICS. Accidental and intentional non-adherence with ICS at least twice a week was reported by 27% and 24%, respectively. In case of deterioration, 60% of the patients preferred to take more reliever medication, instead of increasing the ICS dose. Having a fixed daily routine with regard to medication and following the advice given by their doctor were the main reasons for adherence, whereas lack of perceived symptoms was the main reason for non-adherence. Non-adherence was associated with increasing disagreement with the statements that controller therapy is effective (p < 0.04), as well as an essential part of asthma therapy (p < 0.002). CONCLUSIONS: Both accidental and intentional non-adherence with controller therapy is common among adult asthmatics. The reasons for suboptimal adherence seem to be accessible through education of both patients and caregivers.

Administration, Inhalation↗

PubMed1983

Genetic transfer of a mucosal adherence factor (R1) from an enteropathogenic Escherichia coli strain into a Shigella flexneri strain and the phenotypic suppression of this adherence factor.

Escherichia coli strain RDEC-1 avidly adheres to rabbit ileal brush borders. Two separate experiments were designed to determine whether pili promote this adherence. (1) Adherence of strain RDEC-1 was phenotypically suppressed by changing the culture medium. Loss of adherence was correlated with the absence of pili. Thus, growth of strain RDEC-1 in Penassay broth (Difco Laboratories, Detroit, Mich.) promoted both adherence and expression of pili on greater than or equal to 90% of organisms, whereas growth in brain-heart infusion medium suppressed adherence and reduced the percentage of piliated organisms to less than or equal to 13%. (2) The adherence ability of strain RDEC-1 was genetically transferred to previously nonadherent and nonpiliated Shigella flexneri. The Shigella exconjugants that inherited the adherence ability were uniformly piliated, while all nonadherent Shigella exconjugants were nonpiliated. Finally, the pili on both RDEC-1 and the Shigella exconjugant strains were shown to be distinct from type 1 pili. Therefore, unique pili confer upon strain RDEC-1 the ability to adhere to rabbit intestinal brush borders.

Adhesiveness↗

PubMed1998

Compliance in dentistry: general adherence, specific adherence and perceived dental health.

In this study it was attempted to replicate findings on the relationship between general and specific adherence and perceived health in the context of dental treatment. Furthermore the psychometric characteristics of a modified adherence scale for use in dental populations were investigated. A sample of 167 freshmen completed a questionnaire containing a general adherence scale (GAS) developed by DiMatteo et al. (Oncology 1992;6:50-7), a perceived health scale, a perceived dental health scale, and two items about adherence to recommendations on dental behaviour. The GAS showed adequate internal consistency. Positive correlations were found for general adherence on the one hand and for specific adherence, perceived health, and perceived dental health on the other. The results concerning the GAS and specific adherence do not correspond with the findings of DiMatteo et al. It is suggested that this discrepancy is due to the situation-specificity of adherence in combination with differences in the samples and the specific adherence measures used in both studies.

Adult↗