\n\nCONCLUSION: NMR-based metabolomic fingerprinting of serum and urine has the potential to be a useful tool in distinguishing patients with active IBD from those in remission. (C) 2014 Baishideng Publishing Group Co., Limited. All rights reserved.”
“Purpose: To evaluate the impact of the number and location of intraprostatic fiducial markers on the accuracy and reproducibility of daily prostate target alignment and to evaluate the migration of such markers.\n\nMethods PX-105684 and Materials: Three gold fiducial markers were implanted transrectally under ultrasound guidance near the apex, middle, and base of the prostate in 10 prostate cancer patients. The patients
had pretreatment in-room computed tomography (CT)
scans three times a week, for approximately 25 CT scans per patient during the 8-week treatment course. A total of 1280 alignments were performed using different alignment scenarios: whole-prostate soft tissue alignment (the gold standard), bone alignment, and seven permutations of alignments this website using one, two, or three fiducial markers. The results of bone alignment and fiducial alignment were compared with the results of whole-prostate alignment. Fiducial migration was also evaluated.\n\nResults: Single-fiducial-marker alignment was more accurate and reproducible than bone alignment. However, due to organ deformation, single fiducial markers did not always reliably represent the position of the entire prostate. The use of two-fiducial combinations was more accurate and reproducible than single-fiducial alignment, and use of all three fiducials was the best. Use of an apex fiducial together with a base fiducial rivaled the use of all three fiducials markers together. Fiducial migration was minimal.\n\nConclusions: The number and the location of implanted fiducial markers affect the accuracy and reliability
of daily prostate CA3 cell line target alignment. The use of two or more fiducial markers is recommended. (C) 2009 Elsevier Inc.”
“Background: Hydrogen-rich saline has been reported to have antioxidant and anti-inflammatory effects and effectively protect against organ damage. Oxidative stress and inflammation contribute to the pathogenesis and/or development of pulmonary hypertension. In this study, we investigated the effects of hydrogen-rich saline on the prevention of pulmonary hypertension induced by monocrotaline in a rat model.\n\nMethods: In male Sprague-Dawley rats, pulmonary hypertension was induced by subcutaneous administration of monocrotaline at a concentration of 6 mg/100 g body weight. Hydrogen-rich saline ( 5 ml/kg) or saline was administred intraperitoneally once daily for 2 or 3 weeks. Severity of pulmonary hypertension was assessed by hemodynamic index and histologic analysis. Malondialdehyde and 8-hydroxy-desoxyguanosine level, and superoxide dismutase activity were measured in the lung tissue and serum.
These changes were primarily a response to public demand. The government, the American public, and the medical community brought emergency medical care to the forefront of national attention PD98059 manufacturer in the sixties. Simultaneously, patients’ relationships with their general practitioners dissolved. As patients started to use the emergency room for non-urgent health problems, emergency visits increased astronomically. In response to rising patient loads and mounting criticism, hospital administrators devised strategies to improve emergency care. Drawing on hospital archives, oral histories, and statistical data,
I will argue that small community hospitals’ hiring of Taselisib ic50 full-time emergency physicians sparked the development of a new specialty. Urban teaching hospitals, which established triage systems and ambulatory care facilities, resisted the idea of emergency medicine and ultimately delayed its development.”
“Background: Computed tomographic (CT) airway lumen narrowing is associated with lower lung function. Although volumetric CT measures of airways (wall volume [WV] and lumen volume [LV]) compared to cross sectional measures can more accurately reflect bronchial morphology, data of their use in never smokers is scarce. We hypothesize that native tracheobronchial tree morphology as assessed by volumetric CT metrics play a significant role in determining
lung function in normal subjects. We aimed to assess the relationships between airway size, the projected branching generation number (BGN) to reach airways of smaller than 2mm lumen diameter -the site for airflow obstruction in smokers-and measures of lung function including forced expiratory volume in 1 second (FEV1) and forced expiratory flow between 25% and 75% of vital capacity (FEF 25-75).
Methods: We assessed WV and LV of segmental and subsegmental airways from six bronchial paths as well as lung volume on CT scans from 106 never smokers. We calculated the lumen area ratio of the subsegmental to segmental airways and estimated the projected BGN Anlotinib inhibitor to reach a smaller than 2mm-lumen-diameter airway assuming a dichotomized tracheobronchial tree model. Regression analysis was used to assess the relationships between airway size, BGN, FEF 25-75, and FEV1. Results: We found that in models adjusted for demographics, LV and WV of segmental and subsegmental airways were directly related to FEV1 (P smaller than 0.05 for all the models). In adjusted models for age, sex, race, LV and lung volume or height, the projected BGN was directly associated with FEF 25-75 and FEV1 (P = 0.001) where subjects with lower FEV1 had fewer calculated branch generations between the subsegmental bronchus and small airways. There was no association between airway lumen area ratio and lung volume.
05). When undergoing like superovulation treatments, a significantly higher number of corpora lutea and ova, with a lower incidence of ovarian cysts, were harvested in the AB and CC genotypes than in AA and CD. These results show that the two loci of GH gene are highly associated with abundant prolificacy and superovulation response in goat breeds.”
“The purpose of this study was to compare the diagnostic accuracy of glucose metabolism and amyloid deposition Milciclib in vivo as demonstrated by F-18-FDG and Pittsburg Compound B (PiB) PET to evaluate subjects with cognitive impairment. Methods: Subjects were selected from existing participants in the Mayo Alzheimer’s
Disease Research Center or Alzheimer’s Disease Patient Registry programs. A total of 20 healthy controls and 17 amnestic mild cognitive impairment (aMCI), 6 nonamnestic mild cognitive impairment (naMCI), and 13 Alzheimer disease (AD) subjects were imaged with both PiB and F-18-FDG PET between March 2006 and August 2007. Global measures for PiB and F-18-FDG PET uptake, normalized to cerebellum for
PiB and pons for F-18-FDG, were compared. Partial-volume correction, standardized uptake value (SUV), and cortical ratio methods of image analysis were also evaluated in an attempt to optimize the analysis for each selleck screening library test. Results: Significant discrimination (P < 0.05) between controls and AD, naMCI and aMCI, naMCI and AD, and aMCI and AD by PiB PET measurements was observed. The paired groupwise comparisons of the global measures demonstrated that PiB PET versus F-18-FDG PET showed similar significant group separation, with only PiB showing significant separation this website of naMCI and aMCI subjects. Conclusion: PiB PET and F-18-FDG PET have similar diagnostic accuracy in early cognitive impairment. However, significantly better group discrimination in naMCI and aMCI subjects by PiB, compared with F-18-FDG, was seen and may suggest early amyloid deposition before cerebral metabolic
disruption in this group.”
“A rhodium-catalyzed addition of sodium tetraarylborates to azomethine imines has been described. Highly efficient asymmetric catalysis has also been achieved by employing a chiral diene ligand to give 1-(diarylmethyl)pyrazolidin-3-ones with high enantioselectivity.”
“Cyanobacteria from estuarine habitats have been poorly studied regarding diversity and potential bioactive compounds production compared with their fresh and marine waters’ congeners. In this work, 44 cyanobacteria isolates characterised from three Portuguese estuarine environments. Identification was performed based on diacritical morphological features of the isolates (e.g. cell shape, cell size, presence/absence of sheaths) and on 16S rRNA gene sequences phylogenetic analysis. Diversity of produced secondary metabolites was assessed by molecular and analytical tools.
“Aims: We compared, in New Zealand Maori at risk of type 2 diabetes, advice emphasizing fiber rich carbohydrate and fat reduction (HCHF) and a high protein (HP) diet incorporating food preferences of indigenous people, ON-01910 mouse with a control group (CONT).\n\nMethods: Eighty-four participants were randomized to three groups. Consecutive 8 week periods of supervised weight
loss, supervised weight maintenance and unsupervised adherence to the prescribed diet using culturally sensitive methods were employed in intervention groups. Dietary compliance, body composition, blood pressure and metabolic variables were measured.\n\nResults: Body weight was reduced throughout on HP -2.6 (95% confidence interval: -4.4, -0.8) kg and HCHF (-1.6 (-3.0, -0.3) kg) compared with CONT. Total body fat (-1.6 (-3.0, -0.3) kg) and waist circumference (-3.0 (-5.7, -0.2) cm) showed sustained decreases on HP compared with CONT. Diet records suggested reasonable compliance with dietary advice on HP. Carbohydrate intake, but not dietary fiber, increased at the expense of fat on HCHF.\n\nConclusions: While moderate weight loss occurred selleck chemicals on both HP and HCHF, HP was associated with some further favorable differences compared with the control group. (C) 2011 Elsevier Ireland Ltd. All
“To examine socioeconomic differences in adolescent alcohol use in Germany as well as their changes between 1994 and 2006.\n\nData were obtained from the “Health Behaviour in School-aged Children” study conducted in North Rhine-Westphalia, Germany in 1994, 1998, 2002 and 2006. The analysis is based on 5.074 15-year-old students.
Prevalence and trends were analysed for each category of family affluence and educational track separately using log-binominal regression models.\n\nAn increase in weekly alcohol use between 1994 and 2002 was followed by a strong decrease from 2002 to 2006. Family PF-6463922 molecular weight affluence only had a weak effect on weekly drinking with a tendency for lower-affluent students reporting less alcohol use. Educational track showed almost no relationship with weekly alcohol use. Trend analyses within the subgroups revealed that the overall trend in alcohol use was similar in all socioeconomic and educational groups.\n\nSocioeconomic patterns in drinking behaviour are not yet developed in 15-year-old adolescents. Adolescence could therefore be an important time frame for tackling inequalities in alcohol use later in life.”
“In this review, possible process steps for the production of bio-based industrial chemicals from glutamic acid are described, including a techno-economic assessment of all processes. The products under investigation were those that were shown to be synthesized from glutamic acid on lab-scale, namely N-methylpyrrolidone (NMP), N-vinylpyrrolidone (NVP), succinonitrile, and acrylonitrile.
Inhibition of amyloid fibril formation by molecular chaperone proteins, such as the small heat-shock protein alpha B-crystallin, may play a protective role in preventing the toxicity associated with this form of protein misfolding. Reduced and carboxymethylated kappa-casein (RCM kappa-CN), a protein derived from milk, readily Selleckchem Stem Cell Compound Library and reproducibly forms fibrils at physiological temperature and pH. We investigated the toxicity of fibril formation by RCM kappa-CN using neuronal model PC12 cells and determined whether the inhibition of fibril formation altered its cell toxicity. To resolve ambiguities in the literature, we also investigated whether fibril formation
by amyloid-beta 1-40 (A beta(1-40)), the peptide associated with Alzheimer’s disease, was inhibited by alpha B-crystallin and if this affected the toxicity of A beta. To this end, either RCM kappa-CN or A beta(1-40) was incubated at neutral pH to induce fibril formation before treating PC12 cells and assessing cell
viability. Incubated (fibrillar) RCM kappa-CN was more toxic to PC12 cells than native RCM kappa-CN with the highest level of toxicity being associated with mature fibrils and protofibrils. Furthermore, the toxicity of RCM kappa-CN was attenuated when its fibril formation was inhibited, either through the chaperone action of alpha B-crystallin or when it interacted with its natural binding partners in milk, alpha(S)- and beta-casein. Likewise, incubating A beta(1-40) 17DMAG with alpha B-crystallin inhibited both A beta(1-40) fibril formation and the associated cell toxicity. Importantly, see more by inhibiting fibril formation, alpha B-crystallin prevents the cell toxicity associated with protein misfolding.”
“Mesenchymal stem cells (MSCs) residing within the bone marrow (BM) differentiate into multiple lineages, including fat, bone, and cartilage. Because MSCs are multipotent and have a great capacity to be expanded in vitro, these cells are an attractive candidate for clinical applications to repair or regenerate damaged tissues of mesenchymal
origin. However, application of MSCs to muscle degenerative diseases has been hampered by the poor differentiation of MSCs into the muscle lineage. To date most methods require the presence of strong non-physiological agents, such as azacytidine. In the present study we explored the potential of Pax3, the master regulator of the embryonic myogenic program, to promote myogenic differentiation from MSCs. Our results clearly demonstrate that Pax3 promotes the differentiation of MSCs towards the myogenic lineage, which occurs at the expense of other mesenchymal lineages including fat, bone, and cartilage. This effect is cell type-selective since Pax3 overexpression in endothelial cells fails to promote myogenesis. These results highlight the potential of regulating transcriptional pathways to direct differentiation of adult stem cells. (C) 2008 Elsevier Inc. All rights reserved.
The biotransformation study of polymethoxyflavones, particularly nobiletin has emerged along with the significant findings of nobiletin bioactivity. Major nobiletin metabolites from rodent biofluids have been successfully characterized, isolated or synthesized for the evaluation of their biological activities and subsequently revealed that nobiletin metabolites demonstrate similar efficacies or more potent anti-oxidant activity and scavenging property against free radicals and in the inhibition of inflammation and cancer growth, and the prevention of metabolic syndrome and cardiovascular diseases. This review starts INCB024360 molecular weight with basic chemistry
of nobiletin and other polymethoxyflavones, highlights their biological properties and recent findings and summarizes nobiletin’s biotransformation and biological activities of the main nobiletin metabolites. (C) 2013 Elsevier Ltd. All rights reserved.”
“Our objective was to study the clinical characteristics and natural history of monomelic amyotrophy (MMA). We used a retrospective study of 279 patients diagnosed to have either upper (Hirayama disease) or lower limb
MMA. Results showed that brachial MMA (BMMA) occurred in 224 patients (male: female, 9: 1). Mean age of onset was 19.5 +/- 4.18 years. Progression occurred over less than five years in the majority (95.9%) of patients. Duration at the last follow-up was: up to five years in 61.4%, 5-10 in 21.3%, 10-15 in 7.2%, bigger than 15 years in 10.1%. MRI showed asymmetrical lower cervical cord atrophy in 44.6% of patients. Crural MMA (CMMA) occurred in 55 patients (male: AZD9291 supplier BKM120 female, 13: 1). Mean age of onset was 21.38
+/- 5.3 years. Similar to BMMA, most cases (65.5%) had onset between 15 and 25 years of age. Total duration of illness at the last follow-up was up to five years in 52.7%, 10 and beyond in 47.3%. In conclusion, a large cohort of patients with monomelic amyotrophy seen over 35 years (1976-2010) is described. Study data support the clinical findings and its natural history with long term follow-up, and the findings emphasize that monomelic amyotrophy is a ‘benign’ condition with a self-limiting course.”
“A series of novel dispiropyrrolidines have been synthesized through 1,3-dipolar cycloaddition of an azomethine ylide generated from sarcosine and isatin with the dipolarophile 3-benzylidene-1-methylpyrrolidine-2,5-dione. Their antibacterial activity was evaluated against Bacillus subtilis NCIM 2718, Staphylococcus aureus NCIM5021, Salmonella typhi NCIM2501, Pseudomonas aeruginosa NCIM 5029 and Proteus vulgaris NCIM2813 by two fold dilution method. Compound 6e exhibits reasonably good activity and compound 6c exhibits poor activity against all the organisms. The QSAR’s were developed for all antibacterial activities. The models had either one or two descriptors (r(2) = 0.81-0.97, r(2)adj = 0.75-0.96, q(2) = 0.57-0.92, F-ratio = 12.73-162.76).
6 to 2.4 diagnoses per patient and the total number of drugs prescribed at discharge increased significantly from 1.48 to 1.93 per patient. Overall, the number of patients who were prescribed mood stabilizers increased by 14%, those who were prescribed antidepressants increased by almost 24%, almost 16% in antipsychotics prescriptions and 51.5% in prescriptions of atypical antipsychotics. Typical antipsychotic prescriptions decreased by 35.5% and accordingly, the number of patients who were prescribed agents for the treatment of extra-pyramidal side effects decreased by almost 24%.
Due to a low number of inpatients with attention deficit and hyperactivity disorder (ADHD), no significant statistical conclusion could be drawn regarding trends in psychostimulant prescriptions. Our findings agree with other published studies from the last two decades. The growing use of psychotropic agents in children and adolescents merit a continuous concern with regard A-1155463 to their effects on the developing brain and impact on quality of life and to authorizing these drugs for use in specific young age subgroups. (C) 2010 Elsevier Masson SAS. All rights reserved.”
“P>Monitoring alterations in fingertip temperature during ischaemia and the subsequent hyperaemia provides a novel way of studying microvascular reactivity. The relations between parameters characterizing blood
perfusion and the thermal response of fingertips were studied using experimental and theoretical
approaches. During the experimental protocol, two brachial artery occlusion tests were conducted IPI-145 manufacturer in 12 healthy volunteers, and fingertip temperature, heat flux and skin perfusion using laser Doppler flowmetry (LDF) were measured. The temperature curves provide a smooth and robust response that is able to capture occlusion and reperfusion. The temperature fall during occlusion as well as the maximum temperature recorded depended linearly on the initial temperature. The magnitude of the LDF signal was associated with local tissue temperature and followed an exponential response. Heat flux measurements demonstrated rapid changes and ALK targets followed variations in blood perfusion closely. The time points at which the heat flux reached its maximum corresponded to the time at which the fingertip temperature curves showed an inflection point after cuff release. The time required for the fingertip temperature to arrive at the maximum temperature was greater than the time to peak for the heat flux signal, which was greater than the LDF signal to reach a maximum. The time lag between these signals was a function of the finger size and finger temperature at the moment reperfusion restarted. Our present results indicate that finger temperature, heat flux and perfusion display varying rates of recovery following ischaemic stimuli and that differential responses are associated with the initial finger temperature.
Noradrenergic innervation was visualized using an antibody against dopamine-beta-hydroxylase (DBH), and the NA effect was studied in small arterial rings mounted in microvascular myographs for isometric force recordings. DBH-immunoreactive nerve fibers were located at the adventitia and the adventitia-media border of the vascular wall.
Electrical field stimulation (EFS, 1-32 Hz) evoked frequency-dependent contractions that were reduced by guanethidine and prazosin selleck products (adrenergic neurotransmission and alpha(1)-adrenoceptors blockers, respectively) and by the alpha(2)-adrenoceptor agonist UK 14,304. The alpha(2)-adrenoceptor antagonist rauwolscine reversed the UK 14,304-produced inhibition. NA produced endothelium-independent contractions that were antagonized with low estimated affinities and Schild slopes different from unity by prazosin and the alpha(1A)-adrenoceptor antagonist N-[2-(2-cyclopropylmethoxyphenoxy)ethyl]-5-chloro-alpha-alpha-dimethyl-1H-indole-3-ethanamine
Volasertib (RS 17053). The alpha(1A)-adrenoceptor antagonist 5-methyl-3-[3-[4-[2-(2,2,2,-trifluoroethoxy) phenyl]-1-piperazinyl]propyl]-2,4-(1H)-pyrimidinedione (RS 100329), which also displays high affinity for alpha(1L)-adrenoceptors, and the alpha(1L)-adrenoceptor antagonist tamsulosin, which also has high affinity for alpha(1A)- and alpha(1D)-adrenoceptors, induced rightward shifts with high affinity of the contraction-response curve to NA. The alpha(1D)-adrenoceptor antagonist 8-[2-[4-(2-methoxyphenyl)-1-piperazinyl]-ethyl]8-azaspiro[4,5]decane-7,9-dione dihydrochloride (BMY 7378) failed to modify the NA contractions that were inhibited by extracellular Ca2+ removal and by voltage-activated
(L-type) Ca2+ channel blockade. These data suggest that pig prostatic resistance arteries have a rich noradrenergic innervation; and NA, whose release is modulated by prejunctional alpha(2)-adrenoceptors, evokes contraction mainly through activation of muscle alpha(1L)-adrenoceptors coupled to extracellular Ca2+ entry via voltage (L-type)- and non-voltage-activated Ca2+ channels.”
“By using RNA interference (RNAi) in rat C6 glial cells, we previously generated the cell line abcd3kd in which the peroxisomal half-transporter 4SC-202 PMP70 was stably knocked-down. The observations that abcd3kd cells had peroxisomal beta-oxidation impairment and an increase of hexacosenoic acid in cholesterol ester fraction, indicated an overlapping function of PMP70 with adrenoleukodystrophy protein (ALDP), the peroxisomal half-transporters involved in X-linked adrenoleukodystrophy (X-ALD). The objective of the present study was to investigate whether PMP70 could affect some oxidative and inflammatory parameters, since many findings indicate oxidative damage in the brain of ALD patients and inflammation is a hallmark of the cerebral forms of X-ALD.
\n\nCONCLUSION: Ets-1 may contribute to the pathologic progress of the diabetic retina induced by VEGF.”
“In 2008, a northwest Texas feedlot underwent an outbreak of Bovine Selleckchem MK-2206 viral diarrhea virus (BVDV) causing high morbidity and mortality involving 2 lots of calves (lots A and B). Severe mucosal surface lesions were observed grossly in the oral cavity, larynx, and esophagus. Mucosal lesions varied from small (1-3 mm) infrequent mucosal ulcerations to large (5 mm to 1 cm) and coalescing ulcerations. Necrotic debris was present in ulcerations of some mortalities with some having plaque-like debris, but other mortalities presented more proliferative lesions. A calf persistently
infected with BVDV arrived with one lot and the isolated virus was genotyped as BVDV-1b. Identical BVDV-1b strains were isolated from 2 other mortalities. A BVDV-2a genotype was also isolated in this outbreak. This genotype was identical to all BVDV-2a strains isolated in both lots. Serum samples were collected from exposed and unexposed animals and tested for antibodies for multiple viral pathogens. Seropositivity ranged from zero percent for calicivirus to 100% positive to Pseudocowpox
virus. At the end of the feeding period, the morbidity and mortality for the 2 lots involved was 76.2% and 30.8%, respectively, for lot A, and 49.0% and 5.6%, respectively, for lot B. Differential diagnoses included vesicular stomatitis viruses, Bovine papular stomatitis virus, and Foot-and-mouth disease virus. Based on the present case, acute BVDV should be considered when mucosal lesions are observed grossly.”
“Background: SBE-β-CD The interpretation of the fetal heart rate (FHR) signal considering labor progression may improve perinatal morbidity and mortality. However, there have been few studies that evaluate the fetus in each labor stage quantitatively. Aim: To evaluate whether the entropy indices of FHR are different according to labor progression. Study design: A retrospective comparative study of FHR recordings in three groups: 280 recordings
in the second stage of labor before vaginal delivery, 31 recordings in the first stage of labor before emergency cesarean delivery, and 23 recordings in the pre-labor before elective TPCA-1 order cesarean delivery. Subjects: The stored FHR recordings of external cardiotocography during labor. Outcome measures: Approximate entropy (ApEn) and sample entropy (SampEn) for the final 2000 RR intervals. Results: The median ApEn and SampEn for the 2000 RR intervals showed the lowest values in the second stage of labor, followed by the emergency cesarean group and the elective cesarean group for all time segments (all P smaller than 0.001). Also, in the second stage of labor, the final 5 min of 2000 RR intervals had a significantly lower median ApEn (0.49 vs. 0.44, P = 0.001) and lower median SampEn (034 vs. 0.29, P smaller than 0.001) than the initial 5 min of 2000 RR intervals.
Crabs were monitored weekly for the presence of eggs. Clutch quality and larval Bromosporine viability were assessed for each clutch. Crabs produced up to 7 clutches over 1 to 2 spawning seasons and survived up to 394 d after the terminal molt. Time to first clutch and time between clutches were positively correlated with carapace width and best described by degree-days, physiological time calculated
as a thermal integral. Size at maturity was negatively correlated with water temperature on the day of the terminal molt. Egg lipid content (mean = 79.2% of dry mass), egg diameter (mean = 267.5 mu m), larval carapace width (mean = 278.4 mu m), and larval survival time without food (mean = 3.4 d) were similar for all clutches. The percentage of embryos developing normally decreased 40% from Clutch 1 to 4, and clutch volume decreased 50% from Clutch 1 to 5. Thus, most of a crab’s reproductive output is from the first few clutches. Realistic estimates of fecundity and reproductive potential are essential for accurate spawning stock assessment and population modeling.”
“Magnetic property of anorthic phase Ag2Mo2O7
nanowires with width of 2 mu m and length up to 40 mu m synthesized by hydrothermal method was studied for the first time. The Ag2Mo2O7 nanowires exhibit ferromagnetic property at room temperature with coercivity 127.7 Oe and remanent magnetization 16.9 x 10(-3) emu/g. The magnetic mechanism has been discussed according to the calculated results Quisinostat inhibitor of the spin-polarized density functional theory
(DFT), which was carried out by the Vienna ab initio Simulation Package (VASP) using projector augmented wave (PAW) pseudopotential to describe the interaction between electron and ion for Ag2Mo2O7 crystal, demonstrating that the magnetism is caused by oxygen vacancies. The photoluminescence spectrum measured at room temperature also indicates the oxygen vacancies in the Ag2Mo2O7 nanowires. (c) 2012 Elsevier B.V. All rights reserved.”
“Introduction: Although the dentoalveolar and skeletal effects MI-503 of rapid maxillary expansion are well documented, the condylar response to this procedure is not well understood. The purpose of this study was to test the following null hypothesis: rapid maxillary expansion promotes immediate changes of the position of the condyles in patients with Class I malocclusion. Methods: Thirty-four subjects with Class I malocclusion underwent rapid maxillary expansion. Cone-beam computed tomography images were collected before activation of the expander and 3 weeks later, after screw stabilization. Using specific software functions, it was possible to determine and reproduce head positioning and landmarks during the different times of the study. Results: The axial, coronal, and sagittal planes were examined, and no asymmetries in condylar positions were found at either time.