8 vs 61 3%), inflammatory osteoarthritis (46 8 vs 87 1%), and pri

8 vs 61.3%), inflammatory osteoarthritis (46.8 vs 87.1%), and primary osteoarthritis (46.8 vs 73.0%). A total of 88.7% of patients had disease-modifying antirheumatic drugs as a proposed management www.selleckchem.com/products/lazertinib-yh25448-gns-1480.html option before US vs 48.4% after US. Before US, 4.8% of patients had non-steroidal anti-inflammatory drug as a proposed management option versus 45.2% after US.\n\nUltrasound of the hands and/or feet significantly influenced the rheumatologists’ diagnostic confidence in specific clinical findings and management plans.”
“The complete sets of elastic constants C-ij and piezoelectric coefficients e(ij) for LiNbO3 and LiTaO3 single crystals have

been determined by resonant ultrasound spectroscopy (RUS) from ambient temperature to 6 K. Both C-ij (T) and e(ij) (T) of the two crystals monotonically increased as the temperature decreased. The Einstein temperature estimated from Varshni’s equation revealed that e(15) and e(22) of LiNbO3 have remarkably low values compared with the acoustic Debye temperature. In addition, the lattice anharmonicity of these piezoelectric coefficients was also extraordinarily low. An analysis based on the Small molecule library in vitro group theory and lattice dynamics revealed

that both LiNbO3 and LiTaO3 crystals have three types of internal displacement modes: A(1), A(2), and E, and only the E mode affects e(15) and e(22). Therefore, it is reasonable to suppose that the E mode internal displacement is responsible for the unusual behaviors of the tow piezoelectric coefficients. (C) 2012 The Japan Society of Applied Physics”
“One of the strongest hypothesis about the maintenance of tree species diversity in tropical areas is disturbance. In order to assess this,

the effect of intensive natural disturbances on forest growth and mortality in a thinning canopy was studied after the landfall of hurricane Joan in 1988. We evaluated the growth and mortality rates of the 26 most common tree species of that forest in eastern Nicaragua. Permanent plots were established at GSK923295 two study sites within the damaged area. Growth and mortality rates of all individual trees >= 3.18cm diameter at breast height were assessed annually from 1990 to 2005. During this period the forest underwent two phases: the building phase (marked by increased number of individuals of tree species present after the hurricane) and the canopy thinning phase (marked by increased competition and mortality). Our results from the thinning phase show that tree survival was independent of species identity and was positively related to the increase in growth rates. The analysis of mortality presented here aims to test the null hypothesis that individual trees die independently of their species identity. These findings were influenced by the mortality observed during the late thinning phase (2003-2005) and provide evidence in favor of a non-niche hypothesis at the thinning phase of forest regeneration. Rev. Biol.

A short-term toxicity assessment was also conducted in healthy ra

A short-term toxicity assessment was also conducted in healthy rats to examine toxic effects of the extract. Oral administration of CLEt to MID and SD rats (100, 200 and 400 mg/kg body weight per day for a period of 21 days) produced significant fall in fasting blood glucose (FBG) in a dose-dependent manner. Treatment with the extract (400 mg/kg) showed significant reduction in serum levels of thiobarbituric acid reactive substances (TBARS) and oxidized low-density selleck lipoprotein (OxLDL) in both MD and SD rats. The antioxidant defense system was also found to be improved in CLEt-treated (400 mg/kg) MD and SD rats, as

revealed by significant increase in activities of erythrocyte’s antioxidant enzymes i.e. superoxide dismutase (SOD) and catalase (CAT) with a concomitant elevation

in erythrocyte’s reduced glutathione (GSH) content. Moreover, there were no toxic signs in rats treated with high doses of the extract (1000 and 2000 mg/kg body weight per day for 21 days). Blood glucose, hepatic and renal function parameters in these rats were found within normal limits. Phytochemical screening of CLEt revealed the presence of alkaloids, flavonoids, saponins, tannins and cardiac glycosides with antihyperglycemic and antioxidant properties. This study suggests that CLEt possesses potent antioxidant activity along with anti hyperglycemic potential, hence protective against diabetic complications.”
“CLC-2 is a hyperpolarization-activated, inwardly rectifying chloride channel. Although the properties of the CLC-2 channel have been well characterized, its function in vivo is not well understood. We have found that channels encoded by the Caenorhabditis elegans CLC-2 homolog MI-503 clh-3 regulate the activity of the spontaneously active hermaphrodite-specific neurons (HSNs), which control the egg-laying behavior. We identified a gain-of-function mutation in

clh-3 that increases channel activity. This mutation inhibits egg laying and inhibits HSN activity by decreasing its excitability. Conversely, loss-of-function mutations in clh-3 lead to misregulated egg laying and an increase in HSN excitability, indicating that these channels modulate egg laying by limiting HSN excitability. clh-3-encoded channels are not required selleck chemical for GABA(A)-receptor-mediated inhibition of the HSN. However, they require low intracellular chloride for HSN inhibition, indicating that they inhibit excitability directly by mediating chloride influx. This mechanism of CLH-3-dependent modulation may be conserved in other neurons in which the driving force favors chloride influx.”
“There is preliminary evidence to suggest that the prefrontal cortex (PFC) is modulated by sex steroids in humans and other primates. The current study examined whether sex differences in performance could be discerned on two working memory tasks that emphasize monitoring and updating processes, and on two tasks that engage the ventromedial PFC/orbitofrontal cortex (VMPFC/OFC).

This study demonstrated that regucalcin localizes in the nucleus

This study demonstrated that regucalcin localizes in the nucleus of cloned normal rat kidney proximal tubular epithelial NRK52E cells, and that its nuclear localization is enhanced

through an intracellular signaling process which involves protein kinase C.”
“A functional electrical stimulation controller is presented that uses a combination of feedforward and feedback for arm control in high-level injury. The feedforward controller generates the muscle activations nominally required for desired movements, and the feedback controller corrects for errors caused by muscle fatigue and external disturbances. The feedforward controller is an artificial neural network (ANN) selleckchem which approximates the inverse dynamics of the arm. The feedback loop includes a PID controller in series with a second ANN representing the nonlinear properties and biomechanical interactions of muscles and joints. The controller was designed and tested using a two-joint musculoskeletal model of the arm that includes four mono-articular and two bi-articular muscles. Its performance during goal-oriented movements of varying amplitudes and durations showed a tracking error of less than 4A degrees in ideal conditions, and less than 10A degrees even in the case of considerable fatigue and external disturbances.”
“Objective. To evaluate the sensitivity and specificity of Doppler

ultrasound (DUS) in diagnosing arthritis in the find more wrist and hands, and, if possible, to define a cutoff level for our ultrasound measures for inflammation, resistive index (RI), and color fraction.\n\nMethods. Using LY3023414 DUS, 88 patients with active RA were selected for study and 27 healthy controls. A total of 419 joints were examined. The synovial vascularization was determined by color Doppler and spectral Doppler estimating the color fraction (the percentage of color pixels inside the synovium was the region of interest) and RI in wrist, metacarpophalangeal (MCP), and proximal interphalangeal (PIP) joints. Receiver-operator characteristic (ROC) curves were made for both US measures. Cutoff levels were selected from the ROC

curves as the values with the optimum sensitivity and specificity.\n\nResults. Analyses were carried out for small joints (MCP and PIP), wrists, and for all joints (pooled). Pooled joint analysis showed the area under the curve for both RI and color fraction was 0.84. The cutoff level for the color fraction was 0.01 and for RI 0.83. With these cutoff levels, the sensitivity and specificity for the color fraction were 0.92 and 0.73, respectively. For RI a sensitivity of 0.72 and specificity of 0.70 were found. Analysis of small joints and wrist gave very similar results.\n\nConclusion. DUS may detect vascularization of the inflamed synovium with a high sensitivity and a moderate specificity with selected cutoff levels.

To evaluate the independent prognostic significance of the NLR, m

To evaluate the independent prognostic significance of the NLR, multivariate proportional Cox regression models were applied for both endpoints. Results A higher NLR was significantly associated with shorter CSS (P = 0.002, log-rank test), as well as with shorter OS (P smaller than 0.001, log-rank test). Multivariate analysis identified a high NLR as an independent prognostic factor for patients’ CSS (hazard

ratio 2.72, 95% CI 1.25-5.93, P = 0.012), and OS (hazard ratio 2.48, 95% CI 1.31-4.70, P = 0.005). Conclusions In the present cohort, patients with a high preoperative NLR had higher cancer-specific and overall mortality https://www.selleckchem.com/ferroptosis.htmll after radical surgery for UUT-UCC, compared with those with a low preoperative NLR. This easily identifiable laboratory

measure should be considered as an additional prognostic factor in UUT-UCC in future.”
“Recurrent or sustained inflammation plays a causal role in the development and progression of left ventricular hypertrophy (LVH) and its transition to failure. Interleukin (IL)-18 is a potent pro-hypertrophic inflammatory cytokine. We report that induction of pressure overload in the rabbit, by constriction of the descending thoracic aorta induces compensatory hypertrophy at 4 weeks (mass/volume ratio: 1.7 +/- SNX-5422 purchase 0.11) and ventricular dilatation indicative of heart failure at 6 weeks (mass/volume ratio: 0.7 +/- 0.04). In concordance with this, fractional shortening was preserved at 4 weeks, but markedly attenuated at 6 weeks. We cloned rabbit IL-18, IL-18R alpha, IL-18R beta, and IL-18 binding protein (1-18BP) cDNA, and show that pressure overload, while enhancing IL-18 and IL-18R expression in hypertrophied and failing hearts, markedly attenuated

the level of expression of the endogenous EGFR inhibitor IL-18 antagonist IL-18BP. Cyclical mechanical stretch (10% cyclic equibiaxial stretch, 1 Hz) induced hypertrophy of primary rabbit cardiomyocytes in vitro and enhanced ANP, IL-18, and IL-18Ra expression. Further, treatment with rhIL-18 induced its own expression and that of IL-18Ra via AP-1 activation, and induced cardiomyocyte hypertrophy in part via PI3K/Akt/GATA4 signaling. In contrast, IL-18 potentiated TNF-alpha-induced cardiomyocyte death, and by itself induced cardiac endothelial cell death. These results demonstrate that pressure overload is associated with enhanced IL-18 and its receptor expression in hypertrophied and failingrabbit hearts. Since IL-18BP expression is markedly inhibited, our results indicate a positive amplification in IL-18 proinflammatory signaling during pressure overload, and suggest IL-18 as a potential therapeutic target in pathological hypertrophy and cardiac failure. Published by Elsevier Ltd.”
“Dorsal root avulsion results in permanent impairment of sensory functions due to disconnection between the peripheral and central nervous system.

It utilizes null space of covariance matrix for feature selection

It utilizes null space of covariance matrix for feature selection. The algorithm can perform bulk reduction of features (genes) while maintaining the quality information in the reduced subset of features for discriminative purpose. Thus, it can be used as a pre-processing step for other feature selection algorithms. The algorithm does not assume statistical independency among Dibutyryl-cAMP cell line the features. The algorithm shows promising classification accuracy when compared with other

existing techniques on several DNA microarray gene expression datasets.”
“Frequent aggression toward others and repetitive self-injurious behaviors (SIB) can be features of catatonia in patients with selleck autism. Similar to catatonia secondary to other etiologies, catatonia associated with autism responds well to treatment with benzodiazepines and/or electroconvulsive

therapy (ECT). The authors report here on two adolescent patients with autism who presented with severe aggression, one of whom also engaged in repetitive SIB. With ongoing treatment with maintenance ECT, dramatic reduction in aggression and SIB were noted, allowing both patients a reasonable quality of life in their own homes. Attempts to taper off ECT coincided with return of aggression symptoms, although not SIB.”
“Bucharest (Romania) hosted this year’s annual meeting of the International Association of Surgeons, Gastroenterologists and Oncologists. The president of the Congress was Irinel Popescu of the University of Bucharest (Romania) and the meeting was held under the auspices of the International Association of Surgeons, Gastroenterologists and Oncologists president Masatoshi Makuuchi (Japanese Red Cross Medical Center, Tokyo, Japan) and its general secretary, Nicolas J Lygidakis (Athens Medical Center, Greece). The organizing committee of the Congress has made considerable efforts to promote the globalization of medical knowledge and BMS-777607 nmr to maintain the values of Medecins Sans Frontieres. The Congress was a model of scientific professionalism,

and was attended by more than 850 delegates. Approximately 250 specialists from 43 countries on five continents described their most recent advances, providing the delegates with an intense and very rich program. The program included symposia, video presentations, free papers and poster presentations. This article highlights the newest and most original results concerning the treatment of liver tumors, particularly in cirrhotic patients.”
“The organization and representation of conceptual knowledge in the brain remains a controversial issue in terms of both neuropsychological and imaging evidence. We report the results of a functional magnetic resonance study in which the role of the most debated dimensions (domain and feature type) was evaluated through a concept-feature verification task.

The single technical failure occurred in the treatment of a 4 3-c

The single technical failure occurred in the treatment of a 4.3-cm RCC.\n\nLocal recurrent tumour was identified in one of 88 patients (1%) with follow-up computed tomography (CT) or magnetic resonance imaging available for review >3 months from the time of ablation. The median (range) imaging follow-up in these patients was 21 (3-73) months. The local tumour recurrence was identified on CT 11 months after the ablation procedure in a patient treated

for a 2.7 cm RCC.\n\nNone of the patients developed metastatic RCC.\n\nThe YH25448 major complication rate was 4% for patients with stage T1a tumours, 15% for those with stage T1b tumours, and 33% for those with stage T2 tumours. There were no procedural-related deaths.\n\nCONCLUSIONS\n\nPercutaneous renal cryoablation of RCC can be performed with high technical success in patients with tumours up to, and beyond 7 cm in maximum diameter.\n\nThe tumour recurrence rate after percutaneous renal cryoablation was low, and recurrence was not related to tumour size in this group of patients.\n\nStatistically significant higher complication rates were seen with treatment of larger (higher T-stage) RCCs.”
“Transient post-tonsillectomy taste dysgeusia (PTD) is a common complaint. Long-lasting PTD is less frequent but has significant consequences

on patients’ quality of life, with some cases leading to medicolegal issues. Treatment options and knowledge JNJ-26481585 about mechanisms and factors favoring PTD are limited. PTD may result from direct surgical injury, tongue compression, inflammatory processes or side effects of local anesthetics. Some authors also claim that dietary zinc deficiency plays a role in the development of PTD. Although this latter cause had not

Selleckchem ISRIB yet received a lot of attention, we report a case of a female patient who reported a 4-year PTD and recovered within 2 months after oral intake of zinc sulfate. This clinical observation, together with recent findings on significant improvement of taste disorders after zinc treatments for other causes, opens again the question of what extent zinc deficiency plays a role in PTD. (Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2010;109:e11-e14)”
“Background: Borrelia burgdorferi sensu lato and Anaplasma phagocytophilum have been considered as pathogens in animals and humans. The role of wild cervids in the epidemiology is not clear. We analyzed questing Ixodes ricinus ticks collected in spring for these pathogens from sites with high (Fjelloyvaer and Strom) and low density (Tjore, Hinnebu and Jomfruland) of wild cervids to study the spread of the pathogens in questing ticks.\n\nMethods: For detection of Anaplasma phagocytophilum a 77-bp fragment in the msp2 gene was used. Detection of Borrelia burgdorferi sensu lato was performed using the FL6 and FL7 primers according to sequences of conserved regions of the fla gene.

SSR data are also used

for the estimation of marker mutat

SSR data are also used

for the estimation of marker mutation rates and allow pedigree inferences, particularly with founder genotypes of the currently grown cultivars, which are useful to understand the evolution of peach as a crop. Results selleck products on LD conservation can be explained by the self-pollinating nature of peach cultivated germplasm and by a bottleneck that occurred at the beginning of modern breeding practices. High LD suggests that the development of whole-genome scanning approaches is suitable for genetic studies of agronomically important traits in peach.”
“microRNAs play an important role in regulating synaptic plasticity. For example, microRNAs target (and are targeted by) plasticity mediators CA4P nmr such as CREB, MECP2, and FMRP. As well, specific microRNAs have been shown to be expressed within dendrites, where they regulate

protein translation of targets mediating dendritic growth. Components of the RISC machinery have been implicated in long-term memory in Drosophila. Here, we review evidence from studies of adult mouse forebrain supporting a model wherein synaptic stimulation (above a threshold value) increases calcium within dendritic spines, activates calpain, and activates and releases dicer from the postsynaptic density. Dicer processes local pre-miRs into mature miRNAs that are incorporated into RISC complexes within or near the dendritic spine, and that bind available target mRNAs in the vicinity. These may repress protein translation under resting conditions, yet permit a phasic burst of translation to occur transiently TPCA-1 datasheet following subsequent synaptic activity. Loaded RISC complexes that are not bound to local mRNAs may serve to bind and trap mRNAs that are being transported down dendrites. Thus, locally formed microRNAs may mark

the location of previously activated synapses and perform a type of synaptic tagging and capture.”
“Relative to closed-canopy tropical forests, tree seedlings planted in open grown areas are exposed to higher light intensity, air temperatures, vapor pressure deficit, and greater seasonal fluxes of plant available water than mature tropical forests. The species-specific adaptive capacity to respond to variable precipitation and seasonality in open grown conditions, therefore, is likely to affect species performance in large-scale reforestation efforts. In the present study, we compared the photosynthetic characteristics of eight tropical tree species within and between seasons at two study sites with contrasting dry season intensities. All species except Pseudosamanea guachapele reduced leaf physiological function between the wet and dry seasons. The contrasting severity of seasonal drought stress at the study sites constrained growth rates and photosynthetic characteristics differently. Variation of photosynthetic characteristics at the species level was high, particularly in the dry season.

There was a negative correlation between the delay in parenteral

There was a negative correlation between the delay in parenteral lipid introduction and weight gain up to day 28. In multivariate analyses, the association between the cumulative intakes of parenteral lipids and weight gain up to 28 days was independent of gestational age at birth, birth weight, sex, smallness for gestational age, and enteral intakes (regression

coefficient: GW4869 0.19; 95% CI: 0.01-0.38) and, up to 36 weeks, independent of gestational age, birth weight, sex, smallness for gestational age and parenteral glucose and amino acids (0.16; 95% CI: 0.04-0.27). Conclusions: Parenteral lipids during the first week were positively associated with weight gain in extremely-low-birth-weight infants and could improve early nutritional support of preterm neonates. (C) 2013 Elsevier Ltd and European Society for 4SC-202 datasheet Clinical Nutrition and Metabolism.”
“This study presents the first global transcriptional profiling and phenotypic characterization of the major human opportunistic fungal pathogen, Candida albicans, grown in spaceflight conditions. Microarray analysis revealed that C. albicans subjected to short-term spaceflight culture differentially regulated 452 genes compared to synchronous ground controls, which represented 8.3% of the analyzed ORFs. Spaceflight-cultured C. albicans-induced genes involved in cell

aggregation (similar to flocculation), which was validated by microscopic and flow cytometry analysis. We also BX-795 purchase observed enhanced random budding of spaceflight-cultured cells as opposed to bipolar budding patterns for ground samples, in accordance with the gene expression data. Furthermore, genes involved in antifungal agent and stress resistance were differentially regulated in spaceflight, including induction of ABC transporters and members of the major facilitator family, downregulation of ergosterol-encoding genes, and upregulation of genes involved in oxidative stress resistance. Finally, downregulation

of genes involved in actin cytoskeleton was observed. Interestingly, the transcriptional regulator Cap1 and over 30% of the Cap1 regulon was differentially expressed in spaceflight-cultured C. albicans. A potential role for Cap1 in the spaceflight response of C. albicans is suggested, as this regulator is involved in random budding, cell aggregation, and oxidative stress resistance; all related to observed spaceflight-associated changes of C. albicans. While culture of C. albicans in microgravity potentiates a global change in gene expression that could induce a virulence-related phenotype, no increased virulence in a murine intraperitoneal (i.p.) infection model was observed under the conditions of this study. Collectively, our data represent an important basis for the assessment of the risk that commensal flora could play during human spaceflight missions.

Thus, freeze-dried

Thus, freeze-dried U0126 ic50 E. purpurea flower ethanolic extract exhibits good antioxidant and antimutaginic activities. (C) 2011 Elsevier Ltd. All rights reserved.”
“Objectives: To assess activation of muscles of hip adduction using EMG and force analysis during standard clinical tests, and compare athletes with and without a prior history of groin pain.\n\nStudy design: Controlled laboratory study.\n\nParticipants: 21 male athletes from an elite junior soccer program.\n\nMain outcome measures: Bilateral surface EMG

recordings of the adductor magnus, adductor longus, gracilis and pectineus as well as a unilateral fine-wire EMG of the pectineus were made during isometric holds in six clinical examination tests. A load cell was used to measure force data.\n\nResults: Test type was a significant factor in the EMG output for all four muscles (all

muscles p < 0.01). EMG activation was highest in Hips 0 or Hips 45 for adductor magnus, adductor longus and gracilis. EMG activation for pectineus was highest in Hips 90. Injury history was a significant factor in the EMG output for the adductor longus (p < 0.05), pectineus (p < 0.01) and gracilis (p < 0.01) but not adductor magnus. For force data, clinical test type was a significant factor (p < 0.01) with Hips 0 being significantly stronger than Hips 45, Hips 90 and Side lay. BMI (body mass index) was a significant factor (p < 0.01) for producing a higher force. All other factors had no significant effect on the force outputs.\n\nConclusions: Hip adduction strength assessment Sonidegib chemical structure is best measured at hips 0 (which produced most force) or 45 degrees GSI-IX flexion (which generally gave the highest EMG output). Muscle EMG varied significantly with clinical test position. Athletes with previous groin injury had a significant fall in some EMG outputs. (C) 2011 Elsevier Ltd. All rights reserved.”
“Myotonic dystrophy disorders are caused by expanded CUG repeats in noncoding regions. Here we used Caenorhabditis elegans expressing

CUG repeats to identify genes that modulate the toxicity of such repeats. We identified 15 conserved genes that function as suppressors or enhancers of CUG repeat-induced toxicity and that modulate formation of nuclear foci by CUG-repeat RNA. These genes regulate CUG repeat-induced toxicity through distinct mechanisms including RNA export and clearance, thus suggesting that CUG-repeat toxicity is mediated by multiple pathways. A subset of the genes are also involved in other degenerative disorders. The nonsense-mediated mRNA decay (NMD) pathway has a conserved role in regulating CUG-repeat-RNA transcript levels and toxicity, and NMD recognition of toxic RNAs depends on 3′-untranslated-region GC-nucleotide content. Our studies suggest a broader surveillance role for NMD in which variations in this pathway influence multiple degenerative diseases.

Lens refractive power was measured with a custom optical system b

Lens refractive power was measured with a custom optical system based on the Scheiner principle. STAT inhibitor The refractive contributions of the gradient, the surfaces, and the equivalent refractive index were calculated with optical ray-tracing software. The age dependence of the optical and biometric parameters was assessed.\n\nRESULTS. Over the measured age range isolated lens thickness decreased (baboon: -0.04, cyno:

-0.05, and rhesus: -0.06 mm/y) and equatorial diameter increased (logarithmically for the baboon and rhesus, and linearly for cyno: 0.07 mm/y). The isolated lens surfaces flattened and the corresponding refractive power from the surfaces decreased with age (-0.33, -0.48, and -0.68 D/y). The isolated lens equivalent refractive index decreased (only significant for the baboon, -0.001 D/y), and as a result the total isolated lens refractive power decreased with age (baboon: -1.26, cyno: -0.97, and rhesus: -1.76 D/y).\n\nCONCLUSIONS. The age-dependent trends in the optical and biometric properties, growth, and aging, of nonhuman primate lenses are similar to those of the pre-presbyopic Stem Cell Compound Library datasheet human lens. As the lens ages, the decrease in refractive contributions from the gradient refractive index causes a rapid age-dependent decrease in maximally accommodated lens refractive

power. (Invest Ophthalmol Vis Sci. 2010; 51: 2118-2125) DOI:10.1167/iovs.09-3905″
“Background: Development of anticancer drugs is challenging. Indeed, much research effort has been spent in the development of new drugs to improve clinical outcomes with minimal toxicity.

We have previously reported that a formulation of lipid gold porphyrin nanoparticles reduced systemic drug toxicity when compared with free gold porphyrin. In this study, we investigated the delivery CX-6258 and treatment efficiency of PEG surface-modified lipid nanoparticles as a carrier platform.\n\nMethods: We encapsulated antitumor drugs into PEG-modified lipid nanoparticles and these were characterized by size, zeta potential, and encapsulation efficiency. The delivery efficiency into tumor tissue was evaluated using a biodistribution study. To evaluate antitumor efficacy, gold porphyrin or camptothecin (a DNA topoisomerase I inhibitor) were encapsulated and compared using an in vivo neuroblastoma (N2A) model.\n\nResults: We showed that drug encapsulation into PEG-modified lipid nanoparticles enhanced the preferential uptake in tumor tissue. Furthermore, higher tumor killing efficiency was observed in response to treatment with PEG-modified lipid nanoparticles encapsulating gold porphyrin or camptothecin when compared with free gold porphyrin or free camptothecin. The in vivo antitumor effect was further confirmed by study of tumor inhibition and positive apoptosis activity.