Other factors on the Rm1021 cell surface, and growth conditions,<

Other factors on the Rm1021 cell surface, and growth conditions,

presumably regulate attachment and/or growth as a biofilm on polyvinylchloride. Rhizobia are soil bacteria with the capability to establish a symbiotic relationship with legume plants when soil nitrogen is limited. Rhizobial surface polysaccharides play important roles in symbiosis and formation of active nodules. Mutants defective in the production of exopolysaccharides, lipopolysaccharides, and capsular polysaccharides usually show reduced induction of effective nodules, and are particularly GPCR Compound Library manufacturer affected in the process of infection through infection threads (Hirsch, 1999). One of the best-studied exopolysaccharides produced by Sinorhizobium meliloti is succinoglycan (EPS I) (Reinhold et al., 1994), which consists of repeated units of an octasaccharide containing one galactose and seven glucoses, and has characteristic succinyl, acetyl, and pyruvyl modifications. A 25-kb region located in the second symbiotic megaplasmid (pSymB) in S. meliloti clusters the exo–exs genes necessary for the production of EPS I. The roles of most Metformin of these genes have already been defined (Reuber & Walker, 1993). Sinorhizobium meliloti is also capable of producing a second exopolysaccharide known as galactoglucan (EPS II) (Her et al., 1990; Zevenhuizen, 1997), which is synthesized under

conditions of phosphate limitation (as often found in soils) (Zhan et al., 1991; Mendrygal & González, 2000), in the presence of a mutation in the regulatory gene mucR (Zhan Rutecarpine et al., 1989; Keller et al., 1995) or an intact copy of the transcriptional

regulator expR (Glazebrook & Walker, 1989; Pellock et al., 2002). EPS II is a polymer of disaccharide repeating units consisting of an acetylated glucose and a pyruvylated galactose (Her et al., 1990). A 32-kb cluster of genes (the exp genes) also located in pSymB is responsible for the production of EPS II (Glazebrook & Walker, 1989). EPS I and EPS II are synthesized in two different fractions: high molecular weight (HMW) and low molecular weight (LMW). External addition of the LMW fractions of EPS I (trimers of the octasaccharide), and oligomers (15–20 units of the disaccharide) of EPS II, can restore defective infection phenotypes in exopolysaccharide mutants, indicating that the establishment of symbiosis requires the presence of at least one of the LMW forms of either EPS I or EPS II (Battisti et al., 1992; González et al., 1996). Bacterial surface components, such as exopolysaccharides, flagella, and lipopolysaccharides, are important not only in rhizobia–legume symbiosis but also in biofilm formation. Biofilms are defined as microbial communities surrounded by a self-produced polymeric matrix and attached to a surface (Costerton et al., 1995). The major components of biofilms are water (up to 97% of the total volume) and bacterial cells.

1A) Thus, presynaptic terminals of granule

1A). Thus, presynaptic terminals of granule see more cells probably express NRX isoforms that could bind to both NL1(−) and LRRTM2. Interestingly, when HA-Cbln1 was applied to HEK293 cells expressing NL1(−),

synaptogenesis was significantly inhibited (Fig. 1A). In contrast, HA-Cbln1 did not affect synaptogenesis observed in HEK293 cells expressing LRRTM2 (Fig. 1A). HA-Cbln1 did not directly bind to HEK293 cells expressing NL1(−) or LRRTM2 (data not shown). LRRTM2 is reported to bind to NRXβ(S4−), which lacks a splice site 4 insert, whereas NL1(−) binds to both NRXβ(S4−) and NRXβ(S4+) (Boucard et al., 2005; Ko et al., 2009). Indeed, presynaptic terminals of cbln1-null granule cells accumulated on HEK293 cells expressing LRRTM2 were preferentially inhibited by NRX1β(S4−)-Fc. In contrast, synaptogenesis induced by NL1(−)cells was preferentially inhibited by NRX1β(S4+)-Fc (Supporting Information Fig. S1). Therefore, we hypothesized that Cbln1 may interact with NRXβ(S4+) expressed at presynaptic sites in granule cells and, thus, specifically interfere with NL1(−)-induced synaptogenesis. To examine this hypothesis, we next expressed GFP-tagged NL1(−) in HEK293 cells and examined whether HA-Cbln1 affected the binding between

NL1(−) and NRX1β(S4+). The extracellular domains of NRX1β isoforms were attached to the Fc fragment of IgG. We confirmed that both NRX1β(S4+)-Fc and NRX1β(S4−)-Fc bound to HEK293 cells expressing Omipalisib nmr NL1(−) (Fig. 1B). Application of HA-Cbln1 to the culture medium Thiamet G specifically and significantly reduced the interaction between NL1(−) and NRX1β(S4+)-Fc (Fig. 1B). These results indicate that Cbln1 interacts with NRX(S4+) and competes with the NL1(−)-NRX(S4+) pathway. To confirm that Cbln1 bound to NRX(S4+), we performed cell-based binding assays, which were previously used for the characterization of interaction between GluD2 and Cbln1 (Matsuda et al., 2010). GluD2 served as a positive control, and GluD2 lacking the NTD (GluD2ΔNTD), to which Cbln1 did not bind,

served as a negative control for the binding assays. At 2 days after transfection, cells were incubated with recombinant HA-Cbln1 for 4 h. Immunoblot analyses (Fig. 2A) showed that HA-Cbln1 bound to HEK293 cells expressing NRX1β(S4+) or GluD2, but not to cells expressing GluD2ΔNTD. Immunocytochemical analyses also showed that HA-Cbln1 bound to HEK293 cells expressing NRX1β(S4+), whereas HA-CS-Cbln1, a trimeric complex that did not possess synaptogenic activities (Matsuda et al., 2010), did not bind (Fig. 2B). Although LRRTMs interact with both NRXα(S4−) and NRXβ(S4−) (Ko et al., 2009; de Wit et al., 2009; Siddiqui et al., 2010), certain NL isoforms bind preferentially to β-isoforms of NRXs. Thus, we examined which isoforms of NRXs interacted with Cbln1 in the cell-based binding assays.

We fully agree with Hagmann and colleagues regarding the need to

We fully agree with Hagmann and colleagues regarding the need to further assess the positive isolated anti-HBc, and support the management strategy that they highlighted to identify possible situations of viral reactivation. “
“The increase in the life expectancy achieved following the introduction

of more effective antiretroviral therapy (ART) in recent years now means that the HIV-infected population are for the first time being exposed to the age-related diseases that affect the general population. Nevertheless, the prevalence of these diseases (which include cardiovascular disease, dyslipidaemia, glucose intolerance and diabetes) is higher, and their onset earlier in the HIV population, probably due to the complex interplay between HIV infection, coinfection with hepatitis B and C, and ART. As a result, HIV

physicians are PARP inhibitor now required to adopt a new approach to the management of HIV, which involves screening and regular monitoring of all HIV-infected individuals for the presence of comorbidities and prompt referral to other clinical specialties when required. If this challenge to patient management is to be overcome, it is clear that educating physicians in the diagnosis and treatment of age-associated comorbidities selleck chemicals is essential, either through ongoing programmes such as the HIV and the Body initiative, an overarching independent medical education programme established in 2007 and overseen by an independent Steering Committee, organized and funded by Gilead, and/or through Miconazole internal training. To assist in this process, this article provides an overview of common comorbidities affecting HIV-infected persons and provides practical guidance on their management. The introduction of effective combination antiretroviral therapy (ART) for the treatment of HIV infection means that patients now have much greater life expectancies [1]. However, mortality rates for HIV-infected patients are three to 15 times

higher than those of the general population [2]. While some of this excess mortality can be attributed to immunodeficiency, more than half of these deaths are not AIDS-related [3]. For the first time, HIV-infected patients are being exposed to the age-related diseases that affect the non-HIV-infected population; for example, cardiovascular disease (CVD), dyslipidaemia, glucose intolerance and diabetes. The prevalence of these conditions may be increased by the premature ageing effect of HIV infection on the immune system [4] and may mean that age-related metabolic comorbidities are encountered earlier than in the noninfected population. Progression to severe disease may also be accelerated in HIV-infected patients when compared with the general population as a result of coinfection with hepatitis B virus (HBV) or hepatitis C virus (HCV) and certain lifestyle factors; for example, cigarette smoking and alcohol consumption [1].

Key barriers to the use of the feedback, such as the issues of pr

Key barriers to the use of the feedback, such as the issues of privacy and confidentiality need to be addressed by National Health Service information providers. Findings Bioactive Compound Library mw warrant further large scale evaluation of their application to practice. “
“Objectives  Recent studies have identified recruitment of customers at the pharmacy counter as a limiter to successful provision of cognitive services in community pharmacies especially that of experienced customers with refill prescriptions. The aim of the paper is to gain insight into current problems of recruiting. Methods 

A qualitative study was conducted based on semi-structured interviews with 12 participants in a project in 2010 aimed at optimising recruitment of experienced asthma patients for the Inhaler Technique Assessment Service in Denmark. An ad hoc analysis was applied in order to interpret pharmacy staff perceptions of experienced asthma patients in comparison with newly diagnosed patients and to categorise the types of developed recruitment strategies as to whether they reflected a technical or everyday-life perspective on medicine. Key findings  Effective recruitment processes were found to follow a generic pattern which consisted of a special type of opening

question Thiazovivin ic50 followed by providing a justification for the service. The participants perceived that the main difference between experienced and newly diagnosed patients was their degree of knowledge about their condition or correct inhaler technique. Most questions, and especially those related to reasons for motivating the customer to accept the service, were dominated by a professional technical understanding of medicine. In particular, follow-up justification Methocarbamol based on a life-world perspective needs to be developed further. The identified type of communication might prevent some customers from accepting the service as they

are not motivated by technical arguments but rather by how their daily symptoms can be relieved. Conclusions  Pharmacy staff should focus both on adequate opening questions as well follow-up justification when trying to recruit customers for cognitive services. The study might inform future studies on how to create new and more adequate strategies for recruitment of customers for relevant cognitive services in community pharmacies. “
“This study aims to explore physicians’ views of pharmacists’ roles in providing primary care services through community pharmacies in the United Arab Emirates (UAE). A qualitative approach involving semi-structured interviews conducted one-to-one or in group discussions was employed. The interviews explored participants’ views of pharmacists’ primary care services including screening and monitoring of disease, health advice, referral, lifestyle and preventive care, supply of printed information, counselling on medications, patient record keeping, and pharmacist intervention in chronic disease management. Data were analysed using the Framework approach.

Our results indicate that HBD-1-3 and Phd-1-3 do not require PMF

Our results indicate that HBD-1-3 and Phd-1-3 do not require PMF for their antibacterial activity. The absence of activity against E. coli in the presence of Na+ and Ca2+ ions is due to not only weakened electrostatic interactions with anionic membrane components, but also involvement of electrochemical

gradients. However, Mg2+ prevents electrostatic interaction of the peptides with the outer membrane resulting in loss of activity. “
“The purpose of this study was to investigate the feasibility of cultivating the biotechnologically important bacterium Streptomyces www.selleckchem.com/products/CP-690550.html griseus in single-species and mixed-species biofilms using a tubular biofilm reactor (TBR). Streptomyces griseus biofilm development was found to be cyclical, starting with the initial adhesion and subsequent development of a visible biofilm after 24 h growth, followed by the complete detachment of the biofilm as a single mass, and ending with the re-colonisation of the tube. Fluorescence microscopy revealed that the filamentous structure of the biofilm was lost upon treatment with protease, but not DNase or metaperiodate, indicating that the extracellular polymeric substance is predominantly protein. When the biofilm was cultivated in conjunction with Bacillus amyloliquefaciens, no detachment was observed after 96 h, although

once subjected to flow detachment. Electron microscopy confirmed the presence of both bacteria in the biofilm and revealed a network of fimbriae-like structures that were much less apparent in single-species biofilm and are likely to increase mechanical Palbociclib order stability when developing in a TBR. This study presents the very first attempt in engineering S. griseus biofilms for continuous bioprocess applications. “
“The diversity of a collection of 49

Lactococcus garvieae strains, including isolates of dairy, fish, meat, vegetable and cereal origin, was explored using a molecular polyphasic approach comprising PCR-ribotyping, REP and RAPD-PCR analyses and a multilocus restriction typing (MLRT) carried out on six partial genes (atpA, tuf, Florfenicol dltA, als, gapC, and galP). This approach allowed high-resolution cluster analysis in which two major groups were distinguishable: one group included dairy isolates, the other group meat isolates. Unexpectedly, of the 12 strains coming from fish, four grouped with dairy isolates, whereas the others with meat isolates. Likewise, strains isolated from vegetables allocated between the two main groups. These findings revealed high variability within the species at both gene and genome levels. The observed genetic heterogeneity among L. garvieae strains was not entirely coherent with the ecological niche of origin of the strains, but rather supports the idea of an early separation of L. garvieae population into two independent genomic lineages. In the last two decades, foodborne diseases have been emerging as an important and growing public health concern.

He referred malaise

and fever since departure, and presum

He referred malaise

and fever since departure, and presumptive diagnosis of spotted fever rickettsiosis was done at admittance and blood aliquot was collected. The serum sample of the patient was analyzed using indirect immunofluorescence with antigens obtained from Vero cell-infected R rickettsii (Sheila Smith Strain). The antigens were prepared at the Adolfo Lutz Institute, São Paulo, Brazil. The IgM antibody titer ≥ 1:64 selleck chemical was considered positive. For culture, blood clot aliquot was centrifuged and the supernatant was inoculated in a confluent monolayer of Vero cells on circular slides adapted to the flat-bottomed tubes (shell vials). Infection of Vero PI3K inhibitor cells was monitored by immunofluorescence

reaction prepared with R rickettsii-positive human serum, which permitted us to observe the presence of fluorescent microorganisms in the form of intracellular bacteria, and SFG rickettsiae were isolated. For molecular characterization of the agent, DNA was extracted from the patient’s blood clot using QIAamp® DNA Blood (QIAGEN, Hilden, Germany), following the manufacturer’s protocol. Rickettsial DNA was detected by polymerase chain reaction (PCR) using the previously described conditions[6] and three sets of primers: CS-78 and CS-32, CS-239 and CS-1069, and Rr190.70p and Rr190.602n.[6, 7] The fragments were cloned into InsT/AcloneTM (Fermentas, Vilnius, Lithuania) and were sequenced in both forward and reverse directions using ABI Prism dGTP BigDye Terminator Ready Reaction Kit (Perkin Elmer, Foster City, CA, USA). The partial sequences of rickettsial ompA and gltA genes were compared with corresponding sequences available in the GenBank (Figure 1). The sequences were aligned with the Clustal W software (1.60). To obtain a better alignment, both pairwise and multiple alignments parameters

were changed from the default set. We used the DNA substitution matrix from the Clustal program, decreased the open gap penalty to 10, and also decreased the transition/transversion Florfenicol rate to 0.25. The alignments were used to construct similarity trees of nucleotide distances estimated by the Neighbor Joining algorithm and number of differences using the MEGA software (Molecular Evolutionary Genetics Analysis, version 3.01). The PCR performed on DNA extracted from the patient blood sample yielded fragments with the expected lengths of gltA and ompA rickettsial genes. Partial sequence of gltA gene was 1,083 bp (GenBank access EU716648), and the nucleotide sequence of ompA gene fragment was 479 bp (GenBank access EU716649). The nucleotide sequences of ompA and gltA genes of our sample (R conorii ICB 1004) had more than 99% identity to the homologous sequences of three R conorii complex strains available in the GenBank.

Alzheimer’s Disease and dementia were taught by 17 Schools althou

Alzheimer’s Disease and dementia were taught by 17 Schools although just 10 and eight Schools respectively covered them in detail. ADHD, autism, eating disorders,

OCD, and personality disorder received little attention and were poorly covered by the majority of Schools. Teaching centred on pharmacology and therapeutics with very few Schools covering social aspects of mental health disorders. Six Schools had taken a deliberate decision to concentrate teaching on those conditions which students were most likely to see in practice. Two ZD1839 mouse Schools had a mental health option in the curriculum. Experiential opportunities for students were limited: six Schools offered some sort of placement but not all involved patient contact; and just four Schools used expert patients in classroom teaching.

Eight Schools employed at least one full-time academic member of staff that had previously worked as a mental health pharmacist. In the other 11 Schools, five employed, on a sessional basis, practising mental health pharmacists to deliver aspects of the undergraduate provision; the remaining six Schools relied heavily on hospital teacher practitioners, regardless of background, to teach mental health disorders. Only three Schools had any teaching input from other healthcare professionals. Current teaching of mental health in Schools shows that subject areas that are more prevalent in society GSK2118436 order are majored on but less commonly encountered conditions are less well covered. This ‘strategic’ approach to those conditions commonly met in practice seems reasonable given the challenges Schools face when determining MPharm curriculum content. Delivery was primarily ‘classroom’ based, taught by pharmacists, and which was medicines centric with very little attention given over to wider determinants MYO10 of mental health. This theory-based uni-professional view of mental health disorders raises questions about how well prepared students are to provide mental health services. 1. Wittchen HU, Jacobi F, Rehm J, et al. The size and burden of mental disorders and other disorders of the brain

in Europe 2010. European Neuropsychopharmacology 2011; 21: 655–679. 2. Brandford D. Survey shows wide variations in the teaching of psychiatric pharmacy. Pharm J 1990; 245: 591. Sara McMillan1, Adem Sav1, Fiona Kelly4,2, Michelle King4, Jennifer Whitty3, Amanda Wheeler1,2 1Griffith Health Institute, Griffith University, QLD, Australia, 2Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand, 3Griffith Health Institute, Griffith University, QLD, Australia, 4Griffith University, QLD, Australia To explore determinants influencing pharmacy choice for Australian residents with chronic health conditions and unpaid carers. The provision of patient-centred care, such as a caring relationship, continuity of care and individualised counselling, were important determinants for people when choosing a pharmacy.

Wright–Giemsa staining of a peripheral blood smear from our patie

Wright–Giemsa staining of a peripheral blood smear from our patient demonstrated the sheathed microfilariae of W bancrofti (Figure 1). The identification was confirmed by the Centers for Disease Control and Prevention. She was treated with 6 mg/kg diethylcarbamazine orally for 1 day. The patient did not experience any adverse reactions. As her lymphedema was chronic in nature, treatment with diethylcarbamazine would not be expected to reverse existing damage. There are therapeutic methods

which may offer benefit including tailor-made BAY 80-6946 in vitro stockings, limb elevation, light massage of the affected limb, intermittent pneumatic compression jackets, heat therapy, or surgical procedures.9 Infection with W bancrofti is possible in short-term travelers, especially if traveling unprotected (mosquito nets, etc.). One study found that filarial infections accounted for 0.62% of medical conditions reported to the GeoSentinal

Network by travelers.10Onchocerca volvulus was responsible for the greatest number of infections followed by equal numbers of Loa loa and W bancrofti. However, morbidity is linked to long-term exposure and high density of infection which result from continuous exposure. Because the life expectancy of the Wuchereria parasite is 5 years, and our patient was treated in the past, it is likely that she was reinfected during one of her visits selleck inhibitor to Guyana. Both authors state that they have no conflicts of interest to declare. “
“We report the first case of leptospirosis in a patient with a travel history to Mauritius, where the disease has very occasionally been reported in local populations. Following an initial dengue-like presentation, the patient suffered pancreatic involvement and trigeminal neuralgia, which are two unusual delayed features of leptospirosis. An increasing number of imported leptospirosis cases and outbreaks following international travel have been published during the last 10 years, mainly in individuals performing

water sports or in contact with a water surface.1 Leptospirosis is now considered an emerging disease in travelers.2 Although the Diflunisal disease has a worldwide distribution,2 travel-associated cases have mostly been reported from the Asian and American continents.1 The disease has a broad clinical spectrum ranging from asymptomatic infections to fatalities and a number of differential diagnoses may be considered. We report a case with rare clinical manifestations in a patient after a trip to Mauritius Island. A 37-year-old French male spent 10 days in Mauritius in March 2010, as an independent traveler to the island, together with six friends. During this trip, he experienced mosquito bites.

6B All animals acquired instrumental responding as shown by a si

6B. All animals acquired instrumental responding as shown by a significant effect of day (F7,63 = 10.51, P < 0.0001). Although the rate of responding was significantly lower on day 1 than all other days

of operant conditioning (Tukey; all P-values < 0.001), responding rapidly leveled off and was maintained at this rate LY2109761 research buy for the remaining 7 days of training. There was no main effect of future cocaine treatment, nor an interaction of treatment by day. Cocaine self-administration.  Following Pavlovian and instrumental conditioning, rats were trained on either a cocaine or water self-administration procedure over 14 days. During training, complications with catheter patency prevented some cocaine-administering rats from completing all days of training (n = 3), and these rats were not used in subsequent analyses. Across the last 3 days of training, successful cocaine self-administering rats (n = 3) showed stable see more responding, completing 35.8 ± 4.9 responses with a mean intertrial interval of 3.7 ± 0.4 min. Yoked control rats equipped with electrophysiological arrays (n = 3) received the same amount of saline via the catheter as the paired cocaine self-administering rats. However, rats

in the control group nosepoked to receive water reinforcements. Due to the large variability across saline-treated animals, a two-way anova indicated no significant differences between the cocaine and water self-administering groups for the number of all nosepokes (F1,4 = 2.72, P = 0.17), nor an effect of day (F13,52 = 1.6, P = 0.10) or interaction of group × day (F13,52 = 1.6, P = 0.10). Pavlovian-to-instrumental

transfer.  Finally, rats were run on PIT (Fig. 6C). Across all subjects, until there was a main effect of cue (F2,5 = 17.66, P < 0.001). A Tukey test showed that lever pressing during the CS+ was significantly greater than during the CS− (P < 0.002) and the baseline (P < 0.001). A significant interaction of treatment × cue (F1,6 = 5.48, P < 0.001) revealed that there was a modest trend towards an increase in the rate of lever pressing during the CS+ compared with the baseline in the saline control group (Tukey; P = 0.07; other comparisons not significant), whereas, in contrast, cocaine-treated animals showed a significant difference between the CS+ and baseline (Tukey; P < 0.005) and between CS+ and CS− (Tukey; P < 0.01). Further, although there were no differences in lever-pressing rates between the treatment groups during baseline (Tukey; P = 0.23), the cocaine group pressed significantly more during the CS+ than the saline group (Tukey; P < 0.001). Similar to lever-pressing behavior, rats showed an enhanced foodcup response during the CS+ compared with the CS− and baseline. Specifically, a main effect of cue (F2,12 = 7.88, P < 0.01) revealed a significant increase in foodcup entries during the CS+ compared with the CS− (Tukey; P < 0.02) and baseline (Tukey; P < 0.

Effect of Prunus mume extract on human oral keratinocytes (HOK) v

Effect of Prunus mume extract on human oral keratinocytes (HOK) viability was also tested. Result.  In the agar diffusion assay, drug suspension of 2 g/mL was able to inhibit all the bacterial species tested, but not the fungal species. MIC and MBC range of Prunus mume extract against the oral bacteria was 0.15625–0.0003 g/mL and P. gingivalis being the most susceptible species. Prune extract did not cause any detrimental effect on HOK. Conclusion. Prunus mume extract

may be a potential candidate for developing an oral antimicrobial agent to control or prevent dental diseases associated with oral pathogenic bacteria. “
“International Journal of Paediatric Dentistry 2011; 21: 210–216 Objective.  To analyse the incidence and the determinants of severe oral mucositis (OM) in young cancer patients treated by standard chemotherapy. Methods.  The study was carried RAD001 clinical trial out at the Pediatric Hemato-Oncology unit of Children’s Hospital of Rabat. Patients under 16 years of age with malignant disease treated by chemotherapy between January 2001 and December 2006 were recorded. Results.  Consecutive patients (n = 970) with malignant disease were studied. The age ranges from 2 months to 16 years (mean, 6.8 ± 4.1 years). OM occurred in 540 (55.6%) patients, and 17.9% of them encountered severe grades. Mean time to

onset of the lesions was 10.5 ± 6.8 (range, 1–22 days) and mean duration was 6.8 ± 3.1 (range, 2–23 days). All chemotherapeutic Histamine H2 receptor protocols were associated with OM development (range, 20–100%). Patients with severe

OM were more likely to have undifferentiated carcinoma of nasopharyngeal Selleckchem VX809 type (RR = 2.6, 95% IC 1.1–6.1), non-Hodgkin lymphoma (RR = 2.1, 95% CI 1.2–2.4) and acute leukaemia (RR = 1.7, 95% CI 1.5–3.6). Methotrexate-based therapies were also associated with the worsening of OM (RR = 1.7, 95% IC 1.2–2.6). Conclusion.  Underlying disease and chemotherapy regimens are the principal risk factors of OM development. This model can help in the identification of patients at risk for adequate preventive and therapeutic measures. “
“Background and aim.  This paper reviews three published papers and adds results from a fourth study which aimed to determine which restorative material would be the best alternative(s) to amalgam (AM) in primary teeth. Design.  All studies had a practice-based design and were part of the routine treatment of children and adolescents. The clinicians were assigned which materials to use in a randomised matter in the first three studies which lasted for 7–8 years. In the fourth study conducted 4 years after the initial studies, the clinicians were free to select the restorative materials. Results and conclusions.  Resin modified glass ionomer (RMGI) and compomer (COM) restorations showed similar longevity compared with AM, whereas conventional GI restorations showed significantly shorter longevity.