\n\nMethods: This analysis is based on the prospective database of the Swiss Association of Laparoscopic and Thoracoscopic Surgery. All patients undergoing emergency laparoscopic appendectomy for acute appendicitis from 1995 to 2006 were included. The following outcomes were assessed for each of the 12 years: conversion rates, intraoperative complications, surgical postoperative complications, general postoperative complications, rate of reoperations, and length of hospital stay. Unadjusted and risk-adjusted multivariable analyses were performed. Statistical significance was set at a level of P < 0.05.

All statistical tests were 2-sided.\n\nResults: Data from 7446 patients undergoing laparoscopic appendectomy for acute appendicitis were prospectively collected. Over the period of observation, the conversion rate decreased significantly from 2.2% to 1.2% (P(trend) < 0.001), as did intraoperative selleck chemicals llc complications (from 3.1% to 0.7%; P(trend) < 0.001), surgical postoperative complications (from 6.1% to 1.9%; P(trend) < 0.001), general postoperative complications (from 4.9% to 1.5%; P(trend) < 0.001), and rates of reoperations (from 3.4% to 0.7%; P(trend) < 0.001). Average postoperative length of hospital stay also significantly decreased

from 4.9 to 3.5 days (P(trend) < 0.001).\n\nConclusions: Our investigation provides compelling evidence that intraoperative complications, surgical and general postoperative complications, conversion rates, rates of reoperations, and average length of hospital stay have

significantly decreased over the Compound C datasheet past decade in patients undergoing surgery for acute appendicitis. The present trend analysis is the first one in the literature encompassing more than a decade and reporting clinical outcomes after laparoscopic appendectomy for acute appendicitis, which represents an important quality control.”
“Objective: Psychomotor impairment has been described in hypertyrosinemia types II and III (HT III). Only recently cognitive deficits have also been reported GW69A in hypertyrosinemia type I (HT I). The pathogenic mechanisms responsible are unknown. Since implementation of 2-(2-nitro-4-trifluoromethylbenzoyl)-1,3-cyclohexanedione (NTBC, Nitisinone (Swedish Orphan International)) in the treatment of HT I, plasma tyrosine elevation is a common finding as known from the other hypertyrosinemias.\n\nPatients and methods: With elevated tyrosine as suspected pathogenic factor in the development of cognitive deficits, we here investigated tyrosine in the cerebrospinal fluid (CSF) and serotonergic and dopaminergic neurotransmitter levels in three patients with HT I during long-term treatment with Nitisinone. In addition, Nitisinone concentrations in plasma and CSF were measured. We also assessed psychomotor and cognitive development by standardized test systems and brain morphology by magnetic resonance imaging.

“
“The human mitochondrial transcriptome, although produced from a small and compact genome, has revealed surprising complexity in its composition and regulation. Wide variation between individual tRNAs, mRNAs, and rRNAs indicate the importance of post-transcriptional JNK-IN-8 processing, maturation, and degradation mechanisms in the regulation of mitochondrial gene expression. RNA-binding proteins play essential roles in controlling the mitochondrial transcriptome from

its synthesis to its destruction and have evolved unique features to complement the unusual features of mitochondrial RNAs. Recent studies have shown how changes in mitochondrial RNAs and their binding proteins can have significant effects on human health. This opens

new avenues for investigation of mitochondrial RNA-binding proteins and the mechanisms by which they regulate mitochondrial gene expression. WIREs RNA 2012 doi: 10.1002/wrna.1128 For further resources related to this article, please visit the WIREs website.”
“Chiral amines are important for the chemical and pharmaceutical industries, and there is rapidly growing interest to use transaminases for their synthesis. Since the cost of the enzyme is an important factor for process economy, the use of whole-cell biocatalysts is attractive, since expensive purification and immobilization steps can be avoided. Display of the protein on the cell surface provides a possible way to reduce the mass transfer limitations of such biocatalysts. However, transaminases need to dimerize in order to become active, and furthermore, they require the cofactor pyridoxal phosphate; consequently, successful KU-57788 transaminase surface expression has not been reported thus far. In this work, we produced an Arthrobacter citreus omega-transaminase in Escherichia coli using a surface display vector based on the autotransporter adhesin involved in diffuse adherence (AIDA-I), which has previously been used for display

of dimeric proteins. The correct localization of the transaminase in the E. coli outer membrane and its orientation toward the cell exterior were verified. Furthermore, transaminase activity was detected BLZ945 exclusively in the outer membrane protein fraction, showing that successful dimerization had occurred. The transaminase was found to be present in both full-length and proteolytically degraded forms. The removal of this proteolysis is considered to be the main obstacle to achieving sufficient whole-cell transaminase activity.”
“Dr. Carl Wiggers’ careful observations have provided a meaningful resource for students to learn how the heart works. Throughout the many years from his initial reports, the Wiggers diagram has been used, in various degrees of complexity, as a fundamental tool for cardiovascular instruction. Often, the various electrical and mechanical plots are the novice learner’s first exposure to simulated data.

Essential amino acid balance during development was not correlated with the Artemia feeding regime, but rather reflected inherent variations of the own species ontogeny. Larval requirements in essential minerals were fully supplied by the enriched Artemia.”
“Epstein-Barr

virus (EBV) infection has been observed in tumor-infiltrated macrophages, but its AZD6244 purchase infection effects on macrophage immune functions are poorly understood. Here, we showed that some macrophages in the tumor stroma of nasopharyngeal carcinoma (NPC) tissue expressed the immunosuppressive protein indoleamine 2,3-dioxygenase (IDO) more strongly than did tumor cells. EBV infection induced mRNA, protein, and enzymatic activity of IDO in human monocyte-derived macrophages (MDMs). Infection increased the production of tumor necrosis factor alpha (TNF-alpha) and interleukin-6 (IL-6), whereas the neutralizing antibodies against TNF-alpha and IL-6 inhibited IDO induction. EBV infection C59 Wnt mouse also activated the mitogen-activated protein kinase (MAPK) p38 and NF-kappa B, and the inhibition of these two pathways with SB202190 and SN50 almost abrogated TNF-alpha and IL-6 production and inhibited IDO production. Moreover, the activation of IDO in response to EBV infection of MDMs suppressed the proliferation of T cells and impaired the cytotoxic activity of CD8(+)

T cells, whereas the inhibition of IDO activity with 1-methyl-L-tryptophan (1-MT) did not affect T cell proliferation and function. These findings indicate that EBV-induced IDO expression in MDMs is substantially mediated by IL-6- and TNF-alpha-dependent mechanisms via the p38/MAPK and NF-kappa B pathways, suggesting that a possible role of EBV-mediated IDO expression in tumor stroma of NPC may be to create a microenvironment of suppressed T cell immune responses.”
“Treatment Smoothened Agonist delay, or the time lapse between diagnosis and surgery, may have a detrimental effect on cancer outcomes. This study assesses the effect of treatment delay

on cancer-related outcomes in a large, continuous series of surgically treated colon cancer patients. All surgical colon cancer cases at our center from 2004 through 2011 were reviewed. Patients who underwent preoperative chemotherapy, emergency admissions, palliative cases, and incidental and postoperative diagnoses were excluded. Treatment delay was correlated with outcomes in univariate and multivariate regression and proportional hazards models. In 769 included patients, for every treatment-delay quartile increase, odds of death decreased by an odds ratio (OR) of 0.78 (p = 0.001), and metastatic recurrence by OR 0.78 (p = 0.013). Shorter survival duration had a hazard ratio (HR) of 0.81 (p = 0.001) and shorter disease-free survival HR 0.72 (p smaller than 0.001). Multivariate regression adjusting for baseline staging greatly reduces these ratios, and makes them non-significant.

“
“The diamagnetic cobalt(III) dimethyl complex, cis,mer-(PMe(3))(3)Co(CH(3))(2)I, click here was found to promote selective C-C bond formation, affording ethane and triplet (PMe(3))(3)CoI. The mechanism of reductive elimination has been investigated by a series of kinetic and isotopic-labeling experiments. Ethane formation proceeds with a rate constant of 3.1(5) x 10(-5) s(-1) (50 degrees C) and activation parameters of Delta H(double dagger) = 31.4(8) kcal/mol and Delta S(double dagger) = 17(3) eu. Addition of free trimethylphosphine or coordinating solvent

strongly inhibits reductive elimination, indicating reversible phosphine dissociation prior to C-C bond-coupling. EXSY NMR analysis established a rate constant of 9(2) s(-1) for phosphine loss from cis,mer-(PMe(3))(3)Co(CH(3))(2)I. Radical trapping, crossover, and isotope effect experiments were consistent with a proposed mechanism for ethane extrusion where formation of an unobserved five-coordinate intermediate is followed by concerted C-C bond formation. An unusual intermolecular exchange of cobalt-methyl ligands was also observed by isotopic labeling.”
“Background: Adjuvant hormone therapy (AHT) following radiotherapy or surgery is a treatment option frequently offered to men with localised or locally advanced prostate cancer. We performed a systematic review of published randomised trials

selleck kinase inhibitor to assess the effectiveness of AHT.\n\nMethods: We searched MEDLINE, EMBASE, the Cochrane library, SCI, LILACS and SIGLE for randomised trials comparing AHT plus primary therapy (radiotherapy or prostatectomy) with primary therapy alone. Data on study design, participants interventions and Outcomes were extracted from relevant studies and where possible pooled for meta-analysis.\n\nFindings: AHT following radiotherapy improved overall survival (at 5 years OR fixed effect model

1.29, 95% CI 1.07-1.56, p = 0.007), disease-specific survival (OR 2.10, 95% CI 1.53-2.88, p < 0.00001) and disease-free survival (OR 1.91, 95% CI 1.16-2.23, p < 0.00001). A random effect model favoured adjuvant hormone therapy but did not reach significance. After prostatectomy, there was no significant overall survival advantage with AHT, although one study reported a significant improvement in disease-specific survival (HR 4.09, p = 0.0004). Disease-free survival was also better with AHT (OR 3.73, 95% CI 2.30-6.03, p < 0.00001). AHT-induced Repotrectinib solubility dmso toxicities included gynaecomastia, impotence, gastrointestinal and haematological.\n\nConclusions: There are significant clinical benefits associated with the use of AHT for early prostate cancer. Patients should make an informed decision to accept AHT based on its effectiveness and side-effects. (C) 2009 Elsevier Ltd. All rights reserved.”
“Multiparous Stat1(-/-) mice spontaneously develop mammary tumors with increased incidence: at an average age of 12 months, 55% of the animals suffer from mammary cancer, although the histopathology is heterogeneous.

In combination, LAI and canopy %N explain greater than 75 per cent of variation in above-ground net primary productivity among forests, expressed per year or per day of growing season. After accounting Selleckchem Nocodazole for growing season length and climate effects, less than 10 per cent of the variance remained unexplained. These results mirror similar

relations of leaf-scale and canopy-scale (eddy covariance) maximum photosynthetic rates to LAI and %N. Collectively, these findings indicate that canopy structure and chemistry translate from instantaneous physiology to annual carbon fluxes. Given the increasing capacity to remotely sense canopy LAI, %N and phenology, these results support the idea that physiologically based scaling relations can be useful tools for global modelling.”
“Hepatitis E virus (HEV) is a major cause Nutlin-3 molecular weight of acute hepatitis in humans, causing outbreaks and epidemics in regions with sub-optimal sanitary conditions, in many of which it is endemic. Nowadays there is no specific therapy or licensed vaccines against HEV infection. In this

study, we have analyzed in mice the immunogenicity of HEV open-reading frame 2 (ORF-2) protein, and a truncated form of it lacking the first 111 amino acids, efficiently expressed in an improved baculovirus-based technology using insects as living biofactories. Both recombinant proteins elicited high and long-lasting specific anti HEV antibodies. Passive transfer of immunity from immunized mothers to their offspring was demonstrated to occur both by transplacental and lactation routes. These results indicate click here that these insect-derived immunogens constitute low-cost

potential vaccine candidate to be further evaluated. (C) 2011 Elsevier B.V. All rights reserved.”
“Obesity is becoming an increasingly prevalent problem among American children. Screening for obesity associated comorbid conditions has been shown to be inconsistent. The current study was undertaken to explore patterns of ordering screening tests among obese pediatric patients. We analyzed electronic medical records (EMR) from 69,901 patients ages 2-18 years between June 1999 and December 2008. Obese children who had documented diagnoses of obesity were identified based on International Classification of Diseases, Ninth Revision codes. Screening rates for glucose, liver, and lipid abnormalities were assessed. Regression analysis was used to examine impact of patient characteristics and temporal trends were analyzed. Of the 9,251 obese diagnosed patients identified, 22% were screened for all three included obesity-related conditions: diabetes, liver, and lipid abnormalities; 52% were screened for glucose abnormalities; 30% for liver abnormalities; and 41% for lipid abnormalities. Increasing BMI and age were associated with increased rates of screening. Females and Hispanic patients were more likely to be screened.

This research demonstrated that the elevation of reactive Rabusertib oxygen species is sufficient to induce the apoptosis of chicken embryonic fibroblasts, whereas the administration of Vitamin C does not necessarily have certain antiapoptotic effects, especially when the stimulus is not directly linked

with redox state.”
“Background: Previous studies on the association between the distribution of left ventricle hypertrophy and the clinical features of hypertrophic cardiomyopathy (HCM) have yielded unclear results. The aim of this study was to investigate the differences in the prevalence, clinical features, management strategies, and long-term outcomes between patients with midventricular hypertrophic obstructive cardiomyopathy (MVHOCM) and patients with apical https://www.selleckchem.com/products/sbe-b-cd.html HCM (ApHCM).\n\nMethods: A retrospective study of 60 patients with MVHOCM and 263 patients with ApHCM identified in a consecutive single-centre cohort consisting of 2068 patients with HCM was performed. The prevalence, clinical features, and natural history of the patients in these 2 groups were compared.\n\nResults: Compared

with ApHCM patients, patients with MVHOCM tended to be much younger and more symptomatic during their initial evaluation. Over a mean follow-up of 7 years, the probability of cardiovascular mortality and that of morbidity was significantly greater in MVHOCM patients compared with ApHCM patients (log-rank, P < 0.001).\n\nConclusions: Our results suggest that, compared with ApHCM, MVHOCM represents an uncommon presentation of the clinical spectrum of HCM that is characterized by progressive clinical deterioration leading to increased cardiovascular mortality and morbidity. Our results also underscore the importance of the timely recognition of MVHOCM for the prediction of prognosis and the early consideration of appropriate management strategies.”
“Epstein-Barr GS-9973 virus (EBV) is a ubiquitous virus that infects about 90-95% of the adult population. EBV establishes life-long latent persistence. The virus is found to be the major cause of infectious mononucleosis but

it has also been associated with development of endemic Burkitt’s lymphoma. Result of EBV infection is the most common complication in patients after transplantation which is a post-transplant lymphoproliferative disease. Strong associations between EBV infection and Hodgkin’s lymphoma, nasopharyngeal carcinoma, gastric carcinoma and carcinomas derived from smooth muscle tissue also exist. There is a hypothesis that there is an association between EBV infection and autoimmune and allergic diseases. EBV is a Herpesvirus family member; its genetic material has dsDNA form. There are two strains of EBV: A and B. The only host for EBV is human with target cells: B cells and epithelial cells. The life cycle of EBV consists of lytic and latent phases. In the latent phase three different patterns of gene expression are possible.

Therefore, this model is well suited for the analysis of changes in the heart proteome associated with DCM. Here, we present a proteomic survey of the dilated hearts based on differential fluorescence gel electrophoresis and liquid chromatography-mass spectrometric centered methods in comparison to age-matched non-infected hearts. In total, 101 distinct proteins, which belong to categories immunity and defense, cell structure and associated proteins, buy Antiinfection Compound Library energy metabolism and protein metabolism/modification differed in their levels in both groups. Levels of proteins involved in fatty acid metabolism and electron

transport chain were found to be significantly reduced in infected mice suggesting a decrease in energy production in CVB3-induced DCM. Furthermore, proteins associated with muscle contraction (MLRV, MLRc2, MYH6, MyBPC3), were present in significantly altered amounts in infected mice. A significant increase in the level of IGF-1R inhibitor extracellular matrix proteins in the dilated hearts indicates cardiac remodeling due to fibrosis.”
“Introduction: Interferon gamma (IFN gamma) has been originally identified by its anti-viral activity and has been demonstrated to act as potent modulator of the immune system with a range of target cells limited largely to immune cell populations. Although IFN gamma has been shown

to directly affect the barrier function of intestinal epithelial cells, only limited information is available about other functional effects of IFN gamma on intestinal epithelial cells.\n\nMethods: The effects on intestinal epithelial cell migration were studied using a previously described in-vitro model of epithelial restitution in confluent IEC-6 cell monolayers. Intestinal epithelial cell proliferation rates were assessed in various human and

rat intestinal and colon epithelial cell lines using colorimetric MTT assays. Apoptosis of IEC-6 cells exposed to IFN gamma was assessed by flow cytometry. In addition, transforming growth factor find more beta mRNA expression after IFN gamma treatment of IEC-6 cells was assessed by Northern blot analysis.\n\nResults: IFN gamma significantly stimulated intestinal epithelial cell migration in an in-vitro wounding model. Furthermore, IFN gamma caused a significant dose-dependent inhibition of epithelial cell proliferation in non-transformed small intestinal IEC-6 cells and human colon cancer-derived HT-29 cells and no significant rates of apoptosis were detected in the exposed epithelial cells. The effect of IFN gamma on epithelial cell migration and proliferation could be completely blocked by neutralizing antibodies against TGF beta indicating that these effects are mediated through a TGF beta dependent pathway.

22, 0.073, and 0.053 A/W, which correspond to quantum efficiencies of 85%, 28%, and 20%, respectively, at an applied bias of 5 V. The present study demonstrated that ZnO nanowires/PS exhibited a relatively fast photoresponse, with a rise time of 0.089 s and fall time of 0.085 s. The ZnO nanorods/Si and ZnO nanotetrapods/quartz exhibited a slow response, with rise times of 0.128 and 0.194 s and fall times of 0.362 and 0.4 s, respectively. The study suggests that the response

time of the ZnO nanostructures to ultraviolet exposure is dependent on the type of substrate used. Results show that these nanostructures are suitable for sensing applications. (C) 2012 American Institute of Physics. [http://0-dx.doi.org.brum.beds.ac.uk/10.1063/1.4757619]“
“Paravertebral block catheters Autophagy Compound Library solubility dmso are a recognized method of regional pain control after a thoractomy. We describe a technique of insertion with the belief that it provides a superior positioning of the paravertebral (extra-pleural) catheter resulting in a better distribution of the local anaesthetic and better pain control.”
“We evaluated the presentation, treatment, and outcome of infants who present with ventricular tachycardia in the first year of life. Seventy-six infants were admitted to our institution with a diagnosis

of ventricular tachycardia between January, 1987 and May, 2006. Forty-five infants were excluded from the GDC-0973 research buy study because of additional confounding diagnoses including accelerated idioventricular rhythm, Wolff-Parkinson-White syndrome, supraventricular tachycardia find more with aberrancy, long QT syndrome, cardiac rhabdomyoma, myocarditis, congenital lesions, or incomplete data. The remaining 31 included infants who had a median age at presentation of 1 day, with a range from 1 to 255 days, and a mean ventricular tachycardia rate of 213 beats per minute, with a range from 171 to 280, at presentation. The infants were treated chronically with propranolol

(38.7%), amiodarone (12.9%), mexiletine (3.2%), propranolol and mexiletine (9.7%), or propranolol and procainamide (6.5%). The median duration of treatment was 13 months, with a range from 3 to 105 months. Ventricular tachycardia resolved spontaneously in all infants. No patient died, or received catheter ablation or device therapy. Median age at last ventricular tachycardia was 59 days, with a range from 1 to 836 days. Mean follow-up was 45 months, with a range from 5 to 164 months, with a mean ventricular tachycardia-free period of 40 months. Infants with asymptomatic ventricular tachycardia, a structurally normal heart, and no additional electrophysiological diagnosis all had spontaneous resolution of tachycardia. Furthermore, log-rank analysis of the time to ventricular tachycardia resolution showed no difference between children who received chronic outpatient anti-arrhythmic treatment and those who had no such therapy.

\n\nMethods: Swine Selleckchem HIF inhibitor were intubated, anesthetized, and instrumented with central arterial and venous lines and a pulmonary artery catheter. Animals (n=36) were randomly assigned to one of 3 groups: hydroxocobalamin alone (150 mg/kg), sodium thiosulfate alone (413 mg/kg), or hydroxocobalamin (150 mg/kg)+sodium thiosulfate (413 mg/kg) and monitored for 60 minutes after the start of antidotal infusion. Cyanide was infused until severe hypotension developed, defined as blood pressure 50% of baseline mean arterial pressure. Repeated-measures ANOVA was used to determine statistically significant changes between groups over time.\n\nResults: Time to

hypotension (25, 28, and 33 minutes), cyanide dose at hypotension selleck products (4.7, 5.0, and 5.6 mg/kg), and mean cyanide blood levels (3.2, 3.7, and 3.8 mu g/mL) and lactate levels (7, 8.2, 8.3 and mmol/L) were similar. All 12 animals in the sodium thiosulfate group died compared with 2 of 12 in the hydroxocobalamin/sodium thiosulfate group and 1 of 12 in hydroxocobalamin group. No statistically significant differences were detected between the hydroxocobalamin and hydroxocobalamin/sodium thiosulfate groups for carbon monoxide, mean arterial pressure, cyanide levels, or mortality

at 60 minutes. Lactate level (2.6 versus 2.1 mmol/L), pH (7.44 versus 7.42), and bicarbonate level (25 versus 26 mEq/L) at 60 minutes were also similar between groups.\n\nConclusion: Sodium thiosulfate failed to reverse cyanide-induced shock in our swine model of severe cyanide

toxicity. Further, sodium thiosulfate was not found to be effective when added to hydroxocobalamin in the treatment of cyanide-induced shock. Hydroxocobalamin alone was again found to be effective for severe cyanide toxicity. [Ann Emerg Med. 2012;59:532-539.]“
“PURPOSE: There are different mineral classes of asbestos, including serpentines and amphiboles. Chrysotile is the main type of serpentine and by far the most frequently used type of asbestos (about 95% of world production and use). There has been continuing controversy over the capability of chrysotile asbestos to Selleck BLZ945 cause pleural and peritoneal mesothehoma. This review is to help clarify the issue by derailing cases and epidemiology studies worldwide where chrysotile is the exclusive or overwhelming fiber exposure.\n\nMETHODS: A worldwide literature review was conducted of asbestos and associated mesothelioma including case series, case-control and cohort epidemiology studies searching for well documented chryso asbestos associated mesothelioma cases.\n\nRESULTS: Chrysotile asbestos exposures have ice tined in many countries around the world from mining. manufacturing and community exposures. There have been many documented cases of mesothelioma from those exposures.

“
“Platelet adhesion and aggregation at the site of coronary stenting can have catastrophic clinical and economic consequences. Therefore, effective platelet inhibition is vital during and after percutaneous coronary intervention. Eptifibatide is Ispinesib an intravenous antiplatelet agent that blocks the final common pathway of platelet aggregation and thrombus formation by binding to glycoprotein IIb/IIIa receptors on the surface of platelets. In clinical studies, eptifibatide was associated with a significant reduction of mortality, myocardial infarction, or target vessel

revascularization in patients with acute coronary syndrome undergoing percutaneous coronary intervention. However, recent trials conducted in the era of dual antiplatelet therapy and newer anticoagulants failed to demonstrate similar results. The previously seen favorable benefit of eptifibatide was mainly offset

by the increased risk of bleeding. Current American College of Cardiology/American Heart Association Sapitinib concentration guidelines recommend its use as an adjunct in high-risk patients who are undergoing percutaneous coronary intervention with traditional anticoagulants (heparin or enoxaparin), who are not otherwise at high risk of bleeding. In patients receiving bivalirudin (a newer safer anticoagulant), routine use of eptifibatide is discouraged except in select situations (eg, angiographic complications). Although older pharmacoeconomic studies favor eptifibatide, in the current era of P2Y(12) inhibitors and newer safer anticoagulants, the increased costs associated with bleeding make the routine use of eptifibatide an economically nonviable option. The cost-effectiveness of eptifibatide GS-7977 order with

the use of strategies that decrease the bleeding risk (eg, transradial access) is unknown. This review provides an overview of key clinical and economic studies of eptifibatide well into the current era of potent antiplatelet agents, novel safer anticoagulants, and contemporary percutaneous coronary intervention.”
“We investigate the structural properties of a simple model for tetrahedral patchy colloids in which the patch width and the patch range can be tuned independently. For wide bond angles, a fully bonded network can be generated by standard Monte Carlo or molecular dynamics simulations of the model, providing a good method for generating defect-free random tetrahedral networks. This offers the possibility of focusing on the role of the patch angular width on the structure of the fully bonded network. The analysis of the fully bonded configurations as a function of the bonding angle shows how the bonding angle controls the system compressibility, the strength of the pre-peak in the structure factor, and ring size distribution. Comparison with models of liquid water and silica allows us to find the best mapping between these continuous potentials and the colloidal one.