bluuebunny/crossref_metadata_2025_split huggingface dataset:
THE PREVALENCE OF MUSCULOSKELETAL DISORDERS AMONG DENTISTS IN THE CZECH REPUBLIC
Authors: Šustová Zdeňka , Hodačová Lenka , Kapitán Martin 
Published: November 2014

The aim of this study was to determine the prevalence of musculoskeletal problems among Czech dentists and to analyze the factors that affect these disorders. Information was gathered through questionnaire completed by 581 physicians. The questionnaire ascertained general information about physicians including their work habits and the characteristics of their work environment along with the occurrence of musculoskeletal problems as well as their intensity. In the past year the occurrence of at least mild difficulties associated with the locomotive system was reported by 96.9% of dentists surveyed (n = 557), with 66.3% of respondents (n = 381) reporting difficulties of a moderate or major nature. Most respondents of both sexes indicated neck pain. A statistically significant correlation with the occurrence of musculoskeletal complaints of medium and major intensity was demonstrated for the following factors: sex, age, running a private practice, past injury or musculoskeletal diseases, and the perception of work as psychologically demanding. Musculoskeletal disorders in dentists in Czech Republic are relatively frequent and serious health problem. The causes of these diseases must be identified and appropriate preventive interventions undertaken that will contribute to a reduction in the incidence of these problems.
TOTAL HIP ARTHROPLASTY IN PATIENTS WITH PARKINSON'S DISEASE
Authors: Mathew Pradeep George , Šponer Pavel , Kučera Tomáš , Grinac Michal , Knížek Jiří 
Published: November 2014

The aim of this study is to evaluate the results of total hip arthroplasty in patients with Parkinson’s disease during a period of five years, focusing on the assessment of the risks and benefits of surgery. During this period we performed total hip arthroplasty in 14 patients (15 hips) with Parkinson’s disease. Patients were evaluated by subjective symptoms and objective findings, with a focus on the use of support while walking and walking distance, severity of Parkinson’s disease before surgery and at the time of the last follow-up. During the postoperative period, the following parameters were assessed: length of ICU stay, mobilization, complications, the total duration of hospitalization and follow-up care after discharge.Of the 11 patients (12 hips) followed-up 1–5 years with an average of 3 years after operation 8 cases showed progression of neurological disability. 5 patients (6 hips) showed an increased dependence on the use of support when walking and reduced distance that the patient was able to walk. Subjectively, 10 hip joints were completely painless and 2 patients complained of only occasional mild pain in the operated hip. Complications that were encountered were urinary tract infection (5 patients), cognitive impairment (3 patients) and pressure ulcer (2 patients). We did not observe any infection or dislocation of the prosthesis. Three patients fell and fractured the femur and 3 patients in our cohort died during follow up.Implantation of total replacement is possible with judicious indication after careful evaluation of neurological finding in patients with minimal or mild functional impairment of the locomotor system. Prerequisite for a good result is precise surgical technique and optimal implant position with balanced tension of the muscles and other soft tissues around the hip.
SECULAR TRENDS AND LATITUDE GRADIENTS IN THE MALE-FEMALE RATIO AT BIRTH IN YUGOSLAVIA AND THE EX-YUGOSLAVIAN STATES
Authors: Grech Victor 
Published: November 2014

Background: Latitude gradients and secular trends in Europe and North America have been found in the male-female ratio at birth (M/F: male births divided by total births) which approximates 0.515. Methods: Annual national data for Yugoslavia and the post-Yugoslavia States for male and female live births were obtained from the World Health Organisation and analysed with contingency tables. Results: This study analysed 22,020,729 live births. There was a increasing trend in M/F prior to the breakup of the former Yugoslavia (1950–1990, p = 0.002), followed by a decreasing trend after 1990 (p = 0.02). A latitude gradient was also noted, with more males being born in southern, warmer latitudes (p < 0.0001). There was an overall excess of 42,753 male births based on an anticipated M/F of 0.515. Conclusion: M/F is decreasing in this region, similar to the rest of Europe and North America. A latitude gradient is also present with more males being born in warmer (more Southern) latitudes (p < 0.0001), even in this small region and over the short time-frame studied.
RESULTS OF TREATMENT OF PERIPROSTHETIC FEMORAL FRACTURES AFTER TOTAL HIP ARTHROPLASTY
Authors: Korbel Martin , Šponer Pavel , Kučera Tomáš , Procházka Egon , Proček Tomáš 
Published: November 2014

Periprosthetic fractures are the third most common reason for revision total hip arthroplasty. Surgical treatment of periprosthetic fractures belongs to the most difficult procedures due to the extensive surgery, elderly polymorbid patients and the high frequency of other complications. The aim of this study was to evaluate the results of operatively treated periprosthetic femoral fractures after total hip arthroplasty.We evaluated 47 periprosthetic fractures in 40 patients (18 men and 22 women) operated on between January 2004 and December 2010. The mean follow-up period was 27 months (within a range of 12–45 months). For the clinical evaluation, we used modified Merle d’Aubigné scoring system.In group of Vancouver A fractures, 3 patients were treated with a mean score of 15.7 points (good result). We recorded a mean score of 14.2 points (fair result) in 6 patients with Vancouver B1 fractures, 12.4 points (fair result) in 24 patients with Vancouver B2 fractures and 12.7 points (fair result) in 7 patients with Vancouver B3 fractures. In group of Vancouver C fractures, we found a mean score of 16.2 points (good result) in 7 patients.Therapeutic algorithm based on the Vancouver classification system is, in our opinion, satisfactory. Accurate differentiation of B1 and B2 type of fractures is essential. Preoperative radiographic images may not be reliable. If in doubt, checking the stability of the prosthesis fixation during surgery should be performed.
BROWN TUMOR AT THE JAW IN PATIENTS WITH SECONDARY HYPERPARATHYROIDISM DUE TO CHRONIC RENAL FAILURE
Authors: Pechalova Petia F. , Poriazova Elena G. 
Published: November 2014

Brown tumors are bony lesions caused by rapid osteoclastic activity, which rare involved jaws. Renal osteodystrophy (ROD) is associated with different pathogenetic mechanisms – disorder of calcium-phosphate metabolism, impaired metabolism of vitamin D, increased parathyroid activity that lead to extreme concentrations of parathormone. The authors report two cases of jaw enlargement in patients received haemodialysis with excessive increase values of alkaline phosphatase and parathormone in serum. The patients were treated surgically with corrective procedures in maxillo-facial area.ROD of the jaws could be severe complication in dialysis patients with end stage of CKD if no appropriate care aimed at correction or prevention of parathyroid hyperfunction was applied to them.
A categorical equivalence for bounded distributive quasi lattices satisfying: x ∨ 0 = 0 ⇒ x = 0
Authors: Freytes Hector , Ledda Antonio 
Published: November 2014

Abstract
In this work, we investigate a categorical equivalence between the class of bounded distributive quasi lattices that satisfy the quasiequation x∨0 = 0 =⇒ x = 0, and a category whose objects are sheaves over Priestley spaces.
The exponential Diophantine equation x2 + (3n
2 + 1)y = (4n
2 + 1)z
Authors: Wang Jianping , Wang Tingting , Zhang Wenpeng 
Published: November 2014

Abstract
Let n be a positive integer. In this paper, using the results on the existence of primitive divisors of Lucas numbers and some properties of quadratic and exponential diophantine equations, we prove that if n ≡ 3 (mod 6), then the equation x
2 + (3n
2 + 1)y = (4n
2 + 1)z has only the positive integer solutions (x, y, z) = (n, 1, 1) and (8n
3 + 3n, 1, 3).
Some class of analytic functions related to conic domains
Authors: Kanas Stanisława , Răducanu Dorina 
Published: November 2014

Abstract
For q ∈ (0, 1) let the q-difference operator be defined as follows $$\partial _q f(z) = \frac{{f(qz) - f(z)}}
{{z(q - 1)}} (z \in \mathbb{U}),$$ where $$\mathbb{U}$$ denotes the open unit disk in a complex plane. Making use of the above operator the extended Ruscheweyh differential operator R
qλ
f is defined. Applying R
qλ
f a subfamily of analytic functions is defined. Several interesting properties of a defined family of functions are investigated.
Oscillation of second-order nonlinear differential equations with damping
Authors: Li Tongxing , Rogovchenko Yuriy , Tang Shuhong 
Published: November 2014

Abstract
We study oscillatory properties of solutions to a class of nonlinear second-order differential equations with a nonlinear damping. New oscillation criteria extend those reported in [ROGOVCHENKO, Yu. V.—TUNCAY, F.: Oscillation criteria for second-order nonlinear differential equations with damping, Nonlinear Anal. 69 (2008), 208–221] and improve a number of related results.
Factors Related to the Need for Surgical Reconstruction After Anterior Cruciate Ligament Rupture: A Systematic Review of the Literature
Authors: Eggerding Vincent , Meuffels Duncan E. , Bierma-Zeinstra Sita M.A. , Verhaar Jan A. , Reijman Max 
Published: November 2014

Study Design Systematic literature review. Objectives To summarize and evaluate research on factors predictive of progression to surgery after nonoperative treatment for an anterior cruciate ligament (ACL) rupture. Background Anterior cruciate ligament rupture is a common injury among young, active individuals. Surgical reconstruction is often required for patients who do not regain satisfactory knee function following nonsurgical rehabilitation. Knowledge of factors that predict the need for surgical reconstruction of the ACL would be helpful to guide the decision-making process in this population. Methods A search was performed for studies predicting the need for surgery after nonoperative treatment for ACL rupture in the Embase, MEDLINE (OvidSP), Web of Science, CINAHL, Cochrane Central Register of Controlled Trials, PubMed, and Google Scholar digital databases from inception to October 2013. Two reviewers independently selected the studies and performed a quality assessment. Best-evidence synthesis was used to summarize the evidence of factors predicting the need for surgical reconstruction after nonoperative treatment for an ACL rupture. Results Seven studies were included, 3 of which were of high quality. Based on these studies, neither sex (strong evidence) nor the severity of knee joint laxity (moderate evidence) can predict whether, soon after ACL injury, a patient will need ACL reconstruction following nonoperative treatment. All other factors identified in this review either had conflicting or only minimal evidence as to their level of association with the need for surgical reconstruction. Noteworthy is that 1 high-quality study reported that the spherical shape of the femoral condyle was predictive of the need for ACL reconstruction. Conclusion Sex and knee joint laxity tests do not predict the need for ACL reconstruction soon after an ACL rupture. Independent validation in future research will be necessary to establish whether knee shape is a predictive factor. Level of Evidence Prognosis, level 1a-. J Orthop Sports Phys Ther 2015;45(1):37–44. Epub 13 Nov 2014. doi:10.2519/jospt.2015.5183
Chronological Bias in Randomized Clinical Trials Arising from Different Types of Unobserved Time Trends
Authors: Hilgers R.-D. , Tamm M. 
Published: November 2014

SummaryBackground: In clinical trials patients are commonly recruited sequentially over time incurring the risk of chronological bias due to (unobserved) time trends. To minimize the risk of chronological bias, a suitable randomization procedure should be chosen.Objectives: Considering different time trend scenarios, we aim at a detailed evaluation of the extent of chronological bias under permuted block randomization in order to provide recommendations regarding the choice of randomization at the design stage of a clinical trial and to assess the maximum extent of bias for a realized sequence in the analysis stage.Methods: For the assessment of chronological bias we consider linear, logarithmic and stepwise trends illustrating typical changes during recruitment in clinical practice. Bias and variance of the treatment effect estimator as well as the empirical type I error rate when applying the t-test are investigated. Different sample sizes, block sizes and strengths of time trends are considered.Results: Using large block sizes, a notable bias exists in the estimate of the treatment effect for specific sequences. This results in a heavily inflated type I error for realized worst-case sequences and an enlarged mean squared error of the treatment effect estimator. Decreasing the block size restricts these effects of time trends. Already applying permuted block randomization with two blocks instead of the random allocation rule achieves a good reduction of the mean squared error and of the inflated type I error. Averaged over all sequences, the type I error of the t-test is far below the nominal significance level due to an overestimated variance.Conclusions: Unobserved time trends can induce a strong bias in the treatment effect estimate and in the test decision. Therefore, already in the design stage of a clinical trial a suitable randomization procedure should be chosen. According to our results, small block sizes should be preferred, but also medium block sizes are sufficient to restrict chronological bias to an acceptable extent if other contrary aspects have to be considered (e.g. serious risk of selection bias). Regardless of the block size, a blocked ANOVA should be used because the t-test is far too conservative, even for weak time trends.
Risk factors for loosening of cementless threaded femoral implants in canine total hip arthroplasty
Authors: Brown Cimin , Aoki K. , Franklin S. , Hayashi K. , Agnello K. A. 
Published: November 2014

SummaryObjective: To determine the incidence and potential risk factors of femoral implant loosening in the canine Helica® total hip replacement (THR) system.Method: Sixteen dogs with a Helica THR were included. Medical records were reviewed for signalment and size of implants. Stem angle, stem collar to lateral cortex distance, tip to cortex distance, stem collar to lateral cortex distance at a stem angle of 150°, lever arm distance, and the distance on the diaphysis measurements were calculated from the one year postoperative radiographs. Three ratios were determined from these measurements to take into account the size of the femur in relation to the size of the implant. Femoral implant loosening was identified by radiographic and clinical signs, and confirmed at the time of surgical explantation. Differences in the successful and fe-moral stem failure groups were compared using either a students t-test or a Mann Whitney test. Significance was set at p <0.003.Results: Six of the 16 dogs had loosening of the femoral prostheses within one year post-implantation. One dog had evidence of a septic cause for loosening. No significant risk factors could be identified in this group of dogs with Helica stem loosening.Clinical significance: Helica femoral stem loosening was a common complication within one year post-implantation in this group of dogs. No risk factors were identified to potentially decrease the incidence of loosening. Therefore, due to this unacceptably high complication rate, the authors do not recommend this model of the Helica THR.
Fauna Europaea: Annelida – Hirudinea, incl. Acanthobdellea and Branchiobdellea
Authors: Minelli Alessandro , Sket Boris , de Jong Yde 
Published: November 2014

Fauna Europaea provides a public web-service with an index of scientific names (including important synonyms) of all living European land and freshwater animals, their geographical distribution at country level (up to the Urals, excluding the Caucasus region), and some additional information. The Fauna Europaea project covers about 230,000 taxonomic names, including 130,000 accepted species and 14,000 accepted subspecies, which is much more than the originally projected number of 100,000 species. This represents a huge effort by more than 400 contributing specialists throughout Europe and is a unique (standard) reference suitable for many users in science, government, industry, nature conservation and education.
Hirudinea is a fairly small group of Annelida, with about 680 described species, most of which live in freshwater habitats, but several species are (sub)terrestrial or marine. In the Fauna Europaea database the taxon is represented by 87 species in 6 families. Two closely related groups, currently treated as distinct lineages within the Annelida, are the Acanthobdellea (2 species worldwide, of which 1 in Europe) and the Branchiobdellea (about 140 species worldwide, of which 10 in Europe). This paper includes a complete list of European taxa belonging to the Hirudinea, Acanthobdellea and Branchiobdellea. Recent research on a limited number of taxa suggests that our current appreciation of species diversity of Hirudinea in Europe is still provisional: on the one hand, cryptic, unrecognised taxa are expected to emerge; on the other, the status of some taxa currently treated as distinct species deserves revisiting.
CCAAT/Enhancer-Binding Protein α Negatively Regulates IFN-γ Expression in T Cells
Authors: Tanaka Shinya , Tanaka Kentaro , Magnusson Fay , Chung Yeonseok , Martinez Gustavo J. , Wang Yi-hong , Nurieva Roza I. , Kurosaki Tomohiro , Dong Chen 
Published: November 2014

Abstract
Humoral immunity, including Ab switching and somatic hypermutation, is critically regulated by CD4+ T cells. T follicular helper (Tfh) cells have been recently shown to be a distinct T cell subset important in germinal center reactions. The transcriptional regulation of Tfh cell development and function has not been well understood. In this study, we report that C/EBPα, a basic region/leucine zipper transcription factor, is highly expressed in Tfh cells. Cebpa-deficient CD4+ T cells exhibit enhanced IFN-γ expression in vitro and in vivo. T cell–specific Cebpa knockout mice, although not defective in Tfh cell generation, produce significantly increased levels of IgG2a/b and IgG3 following immunization with a protein Ag. Moreover, C/EBPα binds to the Ifng gene and inhibits T-bet–driven Ifng transcription in a DNA binding–dependent manner. Our study thus demonstrates that C/EBPα restricts IFN-γ expression in T cells to allow proper class switching by B cells.
Antibody to the gp120 V1/V2 Loops and CD4+ and CD8+ T Cell Responses in Protection from SIVmac251 Vaginal Acquisition and Persistent Viremia
Authors: Gordon Shari N. , Doster Melvin N. , Kines Rhonda C. , Keele Brandon F. , Brocca-Cofano Egidio , Guan Yongjun , Pegu Poonam , Liyanage Namal P. M. , Vaccari Monica , Cuburu Nicolas , Buck Christopher B. , Ferrari Guido , Montefiori David , Piatak Michael , Lifson Jeffrey D. , Xenophontos Anastasia M. , Venzon David , Robert-Guroff Marjorie , Graham Barney S. , Lowy Douglas R. , Schiller John T. , Franchini Genoveffa 
Published: November 2014

Abstract
The human papillomavirus pseudovirions (HPV-PsVs) approach is an effective gene-delivery system that can prime or boost an immune response in the vaginal tract of nonhuman primates and mice. Intravaginal vaccination with HPV-PsVs expressing SIV genes, combined with an i.m. gp120 protein injection, induced humoral and cellular SIV-specific responses in macaques. Priming systemic immune responses with i.m. immunization with ALVAC-SIV vaccines, followed by intravaginal HPV-PsV–SIV/gp120 boosting, expanded and/or recruited T cells in the female genital tract. Using a stringent repeated low-dose intravaginal challenge with the highly pathogenic SIVmac251, we show that although these regimens did not demonstrate significant protection from virus acquisition, they provided control of viremia in a number of animals. High-avidity Ab responses to the envelope gp120 V1/V2 region correlated with delayed SIVmac251 acquisition, whereas virus levels in mucosal tissues were inversely correlated with antienvelope CD4+ T cell responses. CD8+ T cell depletion in animals with controlled viremia caused an increase in tissue virus load in some animals, suggesting a role for CD8+ T cells in virus control. This study highlights the importance of CD8+ cells and antienvelope CD4+ T cells in curtailing virus replication and antienvelope V1/V2 Abs in preventing SIVmac251 acquisition.
Efficacy of Amino Acids, Vitamins, Minerals, Docosahexaenoic Acid, Galactagogue Combination on Lactation: A Postmarketing Surveillance Study
Authors: Mehta Ami 
Published: November 2014

ABSTRACT

Aim
To evaluate the efficacy mothers in galactagogue + vitamins + aminoacids in postpartum mothers in terms of quantitative improvement of mothers in milk, patient satisfaction and compliance and overall growth of infant due to addition of nutritive value after 30 days of treatment.

Study
A multicentric, noncomparative study was conducted on 1132 patients spread across the country. This study included mothers with inadequate or no breast milk at the time of delivery; and also mothers who had preterm delivery, associated with inadequate milk production. The patients were advised 30 gm of lactancia powder (galactagogue + vitamins + minerals) twice daily along with lukewarm water or milk for at least a month to assess the efficacy and tolerability. The patient's history, mode of delivery and weight of infant were recorded at baseline and the parameters like quantitative improvement in milk, infant growth, patient satisfaction and patient compliance were examined after 3, 5, 7 and 30 days of treatment.

Results
Ninety percent patients had a good improvement and 45% patients with an excellent improvement in lactation after 3 to 5 days of treatment. Among the mothers who had delivered through C-section, it was noted that 223 (46%) mothers had an excellent improvement in lactation following administration of studied formulation, while 229 (47%) mothers had a good improvement. In the LBW infants, the mean weight had increased from 2.29 to 3.04 kg, while in the VLBW, the mean weight increased from 1.41 to 2.3 kg.

Conclusion
Due to changing life style and increased prevalence of mothers IMS, or low/inadequate milk secretion, C-section operative cases, preterm delivery cases can be benefited with studied formulation.

How to cite this article
Mehta A. Efficacy of Amino Acids, Vitamins, Minerals, Docosahexaenoic Acid, Galactagogue Combination on Lactation: A Postmarketing Surveillance Study. J South Asian Feder Obst Gynae 2014;6(2):118-122.
Perforation of Bicuspid Aortic Valve mimicking Trileaflet Aortic Valve on Transesophageal Echocardiography
Authors: Pal Soumendu 
Published: November 2014

ABSTRACT
Endocarditis of bicuspid aortic valve (BAV) can lead to valve perforation and result in severe aortic incompetence. Perforation of valve cusps should be considered in the differential diagnosis of BAV patients presenting with AR, and the condition should not be mistaken as a regurgitant trileaflet AV on transesophageal echocardiography (TEE). Accurate preoperative characterization of the mechanism of aortic regurgitation by TEE is important for determining the type of surgical repair.

How to cite this article
Pal S. Perforation of Bicuspid Aortic Valve mimicking Trileaflet Aortic Valve on Transesophageal Echocardiography. J Perioper Echocardiogr 2014;2(2):77-79.