Results: 280 patients with a median age of 69 years were included

Results: 280 patients with a median age of 69 years were included (99 UUT-UC treated via nephroureterectomy and 181 B-UC treated via radical cystectomy).

Median follow-up was 29 months. None received neoadjuvant chemotherapy. Patients with UUT-UC presented less commonly with invasive disease compared to those with B-UC (44 vs. 77% were >pT2). Overall, 5-year OS for the B-UC group was significantly lower than for the UUT-UC group (60.8 vs. 74.5%, p = 0.02). However, when patients were stratified by stage (>pT2), patients with B-UC had similar OS compared to those with UUT-UC (54.6 vs. 60.8%, p = 0.74). Conclusion: Invasive UUT-UC appears to have similar tumor biology compared to B-UC. Whether we can safely extrapolate on the benefit of neoadjuvant

and adjuvant strategies to patients with UUT-UC requires further investigation. Copyright (C) 2010 S. Karger AG, Basel”
“Thromboangiitis obliterans (TAO), or Buerger disease, is a segmental Occlusive inflammatory disorder of the arteries and veins, and etiopathogenesis is still obscure. It is strongly connected to the use of tobacco products, especially smoking. Smoking cessation is obligatory for Success VX-770 research buy of the medical treatment. In the Current Study, we investigated the prevalence of endothelial nitric oxide synthase (eNOS) 894 G -> T and endothelin-1 (ET-1) 8000 T -> C polymorphisms in association with TAO to reveal any possible involvement in the TAO pathophysiology. The T allele of the eNOS 894 G -> T polymorphism was found to be associated with the prevention of TAO.”
“Purpose: With the increasing use of radiation as adjuvant therapy in breast cancer, the effects of g

radiation on the selleck chemicals remaining normal breast are of increasing importance. The complexities of multiple cellular types within breast tissues and the role of the pleiotropic Tumour Protein 53 (TP53, p53) protein with its downstream transcriptional targets and cellular processes may be central to the effects on residual normal breast tissues.

Conclusion: While a detailed understanding of p53 protein-mediated responses in normal breast tissues remains elusive, p53 appears to have a pivotal role in the effects of g radiation on normal breast epithelium, but not stromal cells, which may account for the differing clinical effects of g radiation in women treated for breast cancer.”
“This article reports a female who presented with bleeding, acquired factor VIII and von Willebrand factor (aFVIII-VWF) deficiency, and central deficiency in the thyroid and adrenal axis (Sheehan’s syndrome). After starting hormone replacement therapy, relief of bleeding in manifestations was associated with correction of both FVIII and VWF to normal. This report draws attention to a rare association between the acquired form of von Willebrand disease and hypothyroidism of central origin.

13 to 7 25 mu m This effect was attributed to an appreciable red

13 to 7.25 mu m. This effect was attributed to an appreciable reduction in droplet charge when the pH was reduced (zeta

approximate to -35 mV at pH 3 and -2 mV at pH 3) thereby decreasing the electrostatic repulsion between droplets. It was proposed that the negative charge on the SMP-coated droplets was due to the presence of anionic substances within the droplets, such as palmitic acid (pK(a)approximate to 4.9). Palmitic acid may have been an impurity in the original ingredient or it may have been generated due to degradation of SMP during storage. The addition of anionic lyso-lecithin markedly improved the stability of the emulsions to droplet aggregation and phase separation at low pH, which was attributed to an increased electrostatic repulsion between the droplets. This study has important consequences for Selleck Lonafarnib the formulation of acidic beverage emulsions with improved stability and physicochemical performance. (C) 2011 Elsevier Ltd. All rights reserved.”
“Chronic lung infection by mucoid Pseudomonas aeruginosa is one of the major pathologic features in patients with cystic fibrosis. Mucoid P. aeruginosa is notorious for its biofilm forming capability and resistance to immune attacks. In this study, the roles of extracellular polymeric substances from biofilms formed by mucoid P.

aeruginosa were investigated. Alginate is not an essential structure component for mucoid P. aeruginosa biofilms. selleckchem Genetic studies revealed that Pel and Psl polysaccharides serve as YM155 research buy essential scaffold and mediate macrocolony formation in mucoid P. aeruginosa biofilms. The Psl polysaccharide is more important than Pel polysaccharide in mucoid P. aeruginosa biofilm structure maintenance and phagocytosis resistance. The polysaccharides were further found to protect mucoid P. aeruginosa strain from host immune clearance in a mouse model of acute lung infection.”
“The muscle sarcoplasmic proteins from bovine M. longissimus thoracis muscle were studied using

proteomics to identify possible protein markers for meat tenderness. This study included 3 experiments: A1, A2, and B. From a collection of biopsies from the bovine M. longissimus thoracis muscle, excised 4 d before slaughter from 178 Norwegian Red young bulls, 26 biopsies were studied in Exp. A1. Based on Warner-Bratzler shear force (WBSF) values at 7 d postmortem, the biopsies were separated into a tender and a tough group of 13 bulls each and analyzed by 2-dimensional gel electrophoresis (2-DE) and Western blotting. The 2-DE experiments identified 4 different proteins: stress-70 protein, protein DJ-1, peroxiredoxin-6, and malate dehydrogenase, which were different in abundance in the tender and tough groups. However, only peroxiredoxin-6 was confirmed by quantification from Western blots. Peroxiredoxin-6 is an antioxidant enzyme that plays a role in protecting cells from oxidative stress.

Functional coupling of LEC1/L1L-[AtNF-YC2] and bZIP67 was also ob

Functional coupling of LEC1/L1L-[AtNF-YC2] and bZIP67 was also observed in the regulation of sucrose synthase 2 (SUS2). Immunoprecipitation experiments revealed that L1L and bZIP67 formed a protein complex in vivo. These results

demonstrate a novel plant-specific mechanism for NF-Y subunit function that enables LEC1 and L1L to regulate a defined developmental network.”
“SETTING: The country of Georgia has a high burden of multi- (MDR-TB) and extensively drug-resistant tuberculosis (XDR-TB).

OBJECTIVE: To assess the performance of the Geno-Type (R) MTBDRsl assay in the detection of resistance to kanamycin (KM), capreomycin (CPM) and ofloxacin (OFX), and of XDR-TB.

DESIGN: Consecutive acid-fast bacilli smear-positive sputum specimens identified as MDR-TB using the MTBDRplus test were evaluated with the MTBDRsl assay and conventional second-line drug susceptibility testing (DST).

RESULTS: Among 159 specimens, amplification was adequate Selleckchem MAPK inhibitor in 154 (97%), including 9 of 9 culture-negative and 2 of 3 contaminated specimens. Second-line DST selleck chemicals llc revealed that 17 (12%) Mycobacterium tuberculosis isolates were XDR-TB. Compared to DST, the MTBDRsl had 41% sensitivity and 98% specificity in detecting XDR-TB

and 81% sensitivity and 99% specificity in detecting OFX resistance. Sensitivity was low in detecting resistance to KM (29%) and CPM (57%), while specificity was ON-01910 mouse respectively 99% and 94%. Median times from sputum collection to second-line DST and MTBDRsl results were 70-104 vs. 10 days.

CONCLUSION: Although the MTBDRsl assay had a rapid turnaround time, detection of second-line drug resistance was poor compared

to DST. Further genetic mutations associated with resistance to second-line drugs should be included in the assay to improve test performance and clinical utility.”
“A sensitive, isocratic reversed-phase high performance liquid chromatographic method involving fluorescence detection was developed for the determination of donepezil hydrochloride in tablets and in human plasma. Pindolol was used as an internal standard. Good chromatographic separation was achieved by using an analytical column C18. The system operated at room temperature using a mobile phase consisting of methanol, phosphate buffer (0.02 mol L(-1)) and triethyl amine (pH 3.5) (55 : 45 : 0.5, V/V/V) at a flow rate 0.9 mL(-1) min. The analyte and internal standard were extracted from human plasma via liquid-liquid extraction. The proposed method was validated for sensitivity, selectivity, linearity, accuracy and precision. The calibration curve was linear over the range of 5-2000 ng mL(-1) of donepezil with detection limit of 1.5 ng mL(-1). Intra-and inter-day relative standard deviations were less than 2.5 %. The method was found to be suitable for quality control of donepezil hydrochloride in bulk drug as well as in human plasma.

Consequently, transient epileptic amnesia may be readily misdiagn

Consequently, transient epileptic amnesia may be readily misdiagnosed as a nonepileptic memory dysfunction in older individuals. When appropriately recognized, it has

been described as a treatment-responsive syndrome amenable to antiepileptic drugs. We describe a patient with drug-resistant transient epileptic amnesia treated with unilateral temporal lobectomy. Prolonged postictal slowing in the mesial temporal structures was evident on invasive electroencephalography 5 hours after the occurrence of a brief focal seizure. These findings support the theory of a Todd phenomenon as the underlying pathophysiological mechanism in transient epileptic amnesia. (C) 2010 Elsevier Inc. All rights reserved.”
“Bulgaria BMN 673 DNA Damage inhibitor had been free from brucellosis since 1958, Liproxstatin-1 manufacturer but during 2005-2007, a reemergence of human and animal disease was recorded. The reemergence of this zoonosis in the country highlights the importance of maintaining an active surveillance system for infectious diseases that will require full cooperation between public health and veterinary authorities.”
“Study Design. Cross sectional.

Objective. This study presents the factor analysis of the Spinal Appearance Questionnaire (SAQ) and its psychometric


Summary of Background Data. Although the SAQ has been administered to a large sample of patients with adolescent idiopathic scoliosis (AIS) treated surgically, its psychometric properties have not been fully evaluated. This study presents the factor analysis and scoring of the SAQ and evaluates its psychometric properties.

Methods. The SAQ and the Scoliosis Research

Society-22 (SRS-22) were administered to AIS patients who were being observed, braced or scheduled for surgery. Standard demographic data and radiographic measures including Lenke type and curve magnitude were also collected.

Results. Of the 1802 patients, 83% were female; with a mean age of 14.8 years and mean initial Cobb angle of 55.degrees (range, 0 degrees 123 degrees). From the 32 items of the SAQ, 15 loaded on two factors Selonsertib clinical trial with consistent and significant correlations across all Lenke types. There is an Appearance (items 1-10) and an Expectations factor (items 12-15). Responses are summed giving a range of 5 to 50 for the Appearance domain and 5 to 20 for the Expectations domain. The Cronbach’s alpha was 0.88 for both domains and Total score with a test-retest reliability of 0.81 for Appearance and 0.91 for Expectations. Correlations with major curve magnitude were higher for the SAQ Appearance and SAQ Total scores compared to correlations between the SRS Appearance and SRS Total scores. The SAQ and SRS-22 Scores were statistically significantly different in patients who were scheduled for surgery compared to those who were observed or braced.


aureus The oxacillin MIC was 16 mu g/mL and the mecA gene and SC

aureus. The oxacillin MIC was 16 mu g/mL and the mecA gene and SCCmec type V were determined by PCR. Although treatment had been appropriated, the patient died after rapid progressive respiratory failure and another nosocomial sepsis. It is important not only to identify

S. lugdunensis in view of its clinical course, but also to determine Crenolanib price its susceptibility to oxacillin by detecting the mecA gene or its product.”
“Background: Left ventricular (LV) wall stiffening plays an important role in the development of heart failure with preserved ejection fraction (HFpEF). Based on the linear elastic theory, we hypothesized that the evaluation of epicardial movement during diastole is helpful for the noninvasive assessment of LV wall distensibility.

Methods and Results: Based on the linear elastic theory, the epicardial movement Selleck Mizoribine index (EMT) was calculated on the echocardiograin as:

endocardial movement during diastole – epicardial movement

during diastole / LV posterior wall thickness at end-systole

We calculated diastolic wall strain (DWS) as follows to examine whether DWS substitutes for EMI:

LV posterior wall thickness at end-systole – LV posterior wall thickness at end-diastole / LV posterior wall thickness at end-systole

The animal study using hypertensive Dahl salt-sensitive rats, HFpEF model, and normotensive Dahl rats showed the significant and inverse correlation of EMI or DWS with myocardial stiffness constant. Preload alteration did not affect EMT or DWS. In the clinical study, the HFpEF patients had lower EMT and DWS than the normal volunteers and the asymptomatic patients with LV hypertrophy.

Conclusions: The evaluation of epicardial movement may be useful in noninvasively assessing wall distensibility in the absence of LV systolic dysfunction. (J Cardiac

Fail 2009;15:68-77)”
“It is well known that propolis has the ability to prevent hyperglycemia. However, the underlying mechanism is not yet fully understood. We therefore investigated whether a Brazilian propolis ethanol extract affects glucose uptake and translocation of insulin-sensitive glucose transporter (GLUT) 4 in skeletal muscle cells. In L6 myotubes, the extract at 1 g/mL significantly promoted GLUT4 translocation and glucose uptake activity. Regarding the mechanism of selleck GLUT4 translocation, propolis extract induced both PI3K and AMPK phosphorylation in a dose-dependent manner in L6 myotubes. However, we could not define which pathway was preferentially associated with GLUT4 translocation, because both PI3K and AMPK inhibitors revealed off-target effects to each other. The main polyphenols found in the propolis extract, artepillin C, coumaric acid, and kaempferide, promoted GLUT4 translocation in L6 myotubes. Additionally, these compounds activated both PI3K- and AMPK-dependent dual-signaling pathways. However, only kaempferide increased glucose uptake activity under our experimental conditions.

Hence, the melatonergic modulation by agomelatine is suggested as

Hence, the melatonergic modulation by agomelatine is suggested as one of the mechanisms for

its antidepressant effect. Agomelatine’s action on dendritic neurogenesis in animal models of depression is also identified as yet another action. (The Journal of Neuropsychiatry and Clinical Neurosciences 2012; 24:290-308)”
“Purpose: The study aimed to systematically review the effect of low-molecular-weight heparin (LMWH) thromboprophylaxis in medical-surgical critically ill patients in the intensive care unit.

Methods: In duplicate and independently, click here we searched for relevant articles using MEDLINE and EMBASE; we also contacted experts and reviewed reference lists. For included studies, we abstracted data on study and patient characteristics, LMWH use, clinical outcomes (venous thromboembolism [VTE], bleeding, and mortality), laboratory outcomes (anti-Xa

levels and thrombocytopenia), and methodological BI 2536 supplier quality.

Results: We included 8 prospective cohort studies and 1 randomized trial, with a total of 629 patients. Eight studies (n = 406 patients) reported anti-Xa levels and only 3 studies (n = 240 patients) reported on at least one clinical outcome. Low-molecular-weight heparin does not appear to bioaccumulate based on repeated measurements of trough anti-Xa levels. Thrombocytopenia occurred in 9.3% of patients receiving

LMWH; heparin-induced thrombocytopenia was not reported. In studies reporting clinical Outcomes, the frequency of VTE in patients receiving LMWH ranged from 5.1% to 15.5%, bleeding complications ranged from 7.2% to 23.1%, and mortality ranged from 1.4% to 7.4%.

Conclusions: Low-molecular-weight heparin may be effective for thromboprophylaxis in medical-surgical critically ill patients, but no trials have compared LMWH against an alternative active strategy; thus, LMWH cannot be recommended routinely. Trials testing LMWH thromboprophylaxis are required, which examine patient-important R788 end points such as the incidence and clinical consequences of VTE, bleeding, heparin-induced thrombocytopenia, and mortality. (C) 2009 Elsevier Inc. All rights reserved.”
“Deep luminescence centers in Si associated with transition metals have been studied for decades, both as markers for these deleterious contaminants, as well as for the possibility of efficient Si-based light emission. They are among the most ubiquitous luminescence centers observed in Si, and have served as testbeds for elucidating the physics of isoelectronic bound excitons, and for testing ab-initio calculations of defect properties.

The chloroderivative of the diacid (I) was synthesized by its rea

The chloroderivative of the diacid (I) was synthesized by its reaction with thionyl chloride, this was followed by condensation with different diamines with phenyl, naphthyl, ether, sulfide, and cardo groups to generate a series of diamidediimidediamines (DADIDAs). The resultant DADIDAs were characterized by elemental analysis and spectroscopic techniques, namely, CYT387 molecular weight Fourier transform infrared

spectroscopy and NMR spectroscopy, and were used as epoxy curing agents to impart flame retardancy to the epoxy system. Two epoxy blends (designated as ES and EP) were prepared by the homogeneous mixing of diglycidyl ether of bisphenol A (DGEBA) with 1,3-bis(3-glycidyloxypropyl)tetramethyl disiloxane and DGEBA with tris(glycidyloxy)phosphine

oxide: each in a ratio of 3 : 2 respectively. The synergistic effect of phosphorus/silicon with nitrogen on the thermal properties of the modified epoxy system was studied. The curing behavior of the epoxy resins formulated by the reaction of stoichiometric HDAC inhibitor amounts of ES/EP with the synthesized DADIDAs were determined by differential scanning calorimetry, and the thermal stabilities of the cured epoxies were evaluated by thermogravimetric analyses (TGAs) under nitrogen and air. TGA indicated that the residual weight percentage of polymers at 800 degrees C was in the range 36.460.0 in nitrogen, and in air, it was up to 6.5. However, the major loss

in weight in air occurred at elevated temperature; this demonstrated their potential use as flame-retardant epoxy systems for electronic/electrical encapsulants. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012″
“Crucial questions in the debate on the origin of quintessential human behaviours are whether modern cognition and associated innovations are unique to our species and whether they emerged abruptly, gradually or as the result of a discontinuous process. Three scenarios have been proposed to account for the origin of cultural modernity. The first argues that modern cognition is unique to our species and the consequence of a genetic mutation that took place approximately 50 ka in Africa among already Bromosporine cost evolved anatomically modern humans. The second posits that cultural modernity emerged gradually in Africa starting at least 200 ka in concert with the origin of our species on that continent. The third states that innovations indicative of modern cognition are not restricted to our species and appear and disappear in Africa and Eurasia between 200 and 40 ka before becoming fully consolidated. We evaluate these scenarios in the light of new evidence from Africa, Asia and Europe and explore the mechanisms that may have led to modern cultures.

72 (95% CI 0 86-3 46) for only one to 1 97 (1 00-3 90), 2 85 (1 4

72 (95% CI 0.86-3.46) for only one to 1.97 (1.00-3.90), 2.85 (1.45-5.58) and 4.44 (2.25-8.76) for 2, 3 and >= 4metabolic syndrome component respectively, relative to those with no component. The adjusted hazard ratio (95% CI) associated with the metabolic syndrome was 1.58 (1.06-2.35) in men and 1.72 (1.08-2.74)

in women for IHD. The contribution of metabolic syndrome to the IHD risk was particularly strong among smokers although there was no significant interaction.

Conclusions: The metabolic syndrome by NCEP/ATPIII definition is a major determinant of ischemic heart disease in this middle-aged Iranian population, especially among smokers. (C) 2010 Elsevier B.V. All rights reserved.”
“Meiosis is an essential process for

sexually reproducing organisms, leading to the formation of specialized generative cells. This review intends to highlight current knowledge of early events during meiosis derived see more from various model organisms, including plants. It will particularly focus on cis- and trans-requirements of meiotic DNA double strand break (DSB) formation, a hallmark event during meiosis and a prerequisite for recombination of genetic traits. Proteins Dinaciclib mouse involved in DSB formation in different organisms, emphasizing the known factors from plants, will be introduced and their functions outlined. Recent technical advances in DSB detection and meiotic recombination analysis will be reviewed, as these new tools now allow analysis of early meiotic recombination in plants with incredible accuracy. To anticipate future directions in plant meiosis research, unpublished results will be included wherever possible.”
“We report on a promising experimental approach to efficiently couple quantum cascade laser (QCL) sources fabricated in either surface emitting micro-ring resonator or standard edge emitting geometry with terahertz (THz) hollow waveguides. We show that the THz beam of a QCL can be guided into flexible silver-coated polycarbonate waveguides having length in the range 4-12 cm with coupling efficiencies > 80%. The dominant optical modes propagating

through the waveguides can be selected by varying the polarization of the incoming QCL beam, the coupling geometries, and/or bending the hollow waveguide. Either the lowest loss TE(11) or the TE(01) mode can be selected and guided through the waveguide with propagation losses in the range 2.1-4.4 dB/m and bending losses lower than 1.2 dB. (C) 2011 American Institute of Physics. [doi:10.1063/1.3639300]“
“Aspergillus fumigatus is an ubiquitous, filamentous and opportunistic pathogenic fungus which causes fatal invasive aspergillosis among immuno-compromised patients. Since therapeutic strategies are currently limited, the mortality rate of invasive aspergillosis is high and thus, alternative antifungal strategies are required.

Two dispersion processing methods are used: a melt processing wit

Two dispersion processing methods are used: a melt processing without any solvent and an ultrasonic technique with solvent and a high-speed stirrer. TEM analysis shows that phase separation

between PMMA and the epoxy network was obtained in the shape of spherical nodules in the presence of the clay in both process methods used. Nanoclay particles were finely dispersed inside thermosetting matrix predominantly Selleckchem BX-795 delaminated when ultrasonic blending was used; whereas micrometer-sized aggregates were formed when melt blending was used. The mechanical behavior of the ternary nanocomposites was characterized using three-point bending test, dynamic mechanical analysis (DMA), and linear elastic fracture mechanics. The corresponding fracture surfaces were examined by scanning electron microscopy

to identify the relevant fracture mechanisms involved. It was evidenced that the better dispersion does not give the highest toughness because ternary nanocomposites obtained by melt blending present the highest fracture parameters (K(Ic)). Some remaining disordered clay tactoids seem necessary to promote some specific toughening mechanisms. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 118: 3632-3642, 2010″
“Purpose: It is vital to understand the associations between the medication event monitoring systems (MEMS) and self-reported questionnaires (SRQs) because Apoptosis inhibitor both are often used to measure medication adherence and can produce different results. In addition, the economic implication of using alternative measures is important as the cost of electronic monitoring devices is not covered by insurance, while self-reports are the most practical and cost-effective method in the clinical settings. This meta-analysis examined

the correlations of two measurements of medication adherence: MEMS and SRQs.

Methods: The literature search (1980-2009) used PubMed, OVID MEDLINE, LY3023414 solubility dmso PsycINFO (EBSCO), CINAHL (EBSCO), OVID HealthStar, EMBASE (Elsevier), and Cochrane Databases. Studies were included if the correlation coefficients [Pearson (rp) or Spearman (rs)] between adherences measured by both MEMS and SRQs were available or could be calculated from other statistics in the articles. Data were independently abstracted in duplicate with standardized protocol and abstraction form including 1) first author’s name; 2) year of publication; 3) disease status of participants; 4) sample size; 5) mean age (year); 6) duration of trials (month); 7) SRQ names if available; 8) adherence (%) measured by MEMS; 9) adherence (%) measured by SRQ; 10) correlation coefficient and relative information, including p-value, 95% confidence interval (CI).

Placenta-maternal plasma ratios and fetal-maternal plasma ratios

Placenta-maternal plasma ratios and fetal-maternal plasma ratios for C-13-DHA were significantly higher than those for any other FA.

Conclusions: Twelve hours after oral application of C-13-labeled FAs, relatively stable tracer enrichment was achieved. We found

a significantly higher ratio of C-13-DHA concentrations in cord plasma than in maternal plasma, which was higher than that for the other studied FAs. C-13-DHA is predominantly esterified into phospholipids and triglycerides in maternal plasma, which may facilitate its placental uptake and transfer. Am J Clin Nutr 2010; 92: 115-22.”
“Three dimensionally structured thin film photovoltaic devices based on interdigitated arrays of microscale electrodes LSD1 inhibitor are examined by external quantum efficiency simulations, indicating considerable J(SC) enhancement is possible through elimination of the front contact and window layer required in planar geometry devices. Electrode parameters including, pitch, width, height, and material are modeled and experimentally probed, demonstrating experimentally and capturing in models dependence on intrinsic material properties and electrode dimensions. In contrast to analogous silicon wafer back contact solar Hydroxylase inhibitor cells where the electrodes are placed

on the silicon absorber at the end of processing, in this design the semiconductor is deposited on the electrodes, taking advantage of the thin film processing already required. Electrodeposited CdS/CdTe heterojunction devices approach 1% efficiencies with simulations as well as optical measurements indicating significant potential for improvement. Suboptimal performance is attributed to unintended materials reactions that preclude annealing at the temperatures required for absorber optimization as well as the Schottky barrier formation

on the nonoptimal electrode materials. The test bed structures and absorber synthesis processes are amenable to an array of deposition techniques for fabrication and measurements of three dimensionally structured semiconductors, contact materials, and photovoltaic devices Small molecule library subject to processing feasibility and materials compatibility. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3561487]“
“Rice straw fiber-high density polyethylene (HDPE) composites were prepared to investigate the effects of rice straw fiber morphology (rice straw refined fiber, rice straw pellet, rice straw strand), fiber content (20 and 40 wt %), and maleic anhydride polyethylene (MAPE) concentration (5 wt %) on the mechanical and thermal properties of the rice straw fiber-HDPE composites in this study. Rice straw refined fiber exhibited more variability in length and width, and have a higher aspect ratio of 16.3. Compared to the composites filled of rice straw pellet, the composites made of the refined fiber and strand had a slightly higher tensile strength and lower tensile elongation at break.