Der Mythos Gregor und die Grundlegung der musica sacra im heiligen Buch

Divine inspiration through the Holy Ghost is topical in the portraits of Gregory the Great: A dove brings him the divine words, which he writes himself or dictates to his deacon Petrus. Thus the charismatic Father of the Church became, like the Evangelists, a divinely inspired medium who transmitted the mandate of spreading the gospel and guaranteed the heavenly origin of the texts that were recited and sung in the liturgy. The preface ‘Gregorius presul', which is to be found in variant forms introducing antiphonaries and cantatories, states that Gregory, the "powerful teacher” of church chant, composed the songbooks (composuit hunc libellum musicae artis), thereby sanctifying them. Scholars see in this preface a Carolingian strategy of legitimation based on this dynasty's theocratic concept of power. Gregorian chant, the quintessence of medieval monophonic tradition, has his origins in the Frankish church adopting the "authentic” Roman rite, which was declared canonical liturgy in all churches of the Frankish empire because of Gregory's authorship. But the consolidation of Gregory's myth unintentionally legitimated the process of composition, too, because the connection between the concepts of authorship and inspiration justified the composer's claim to the ministry of spreading the gospel and of attaining the highest knowledg

Non-surgical management of iatrogenic lateral root perforation: a case report

Perforation is a procedural accident that occurs during root canal treatment, creating an artificial communication between the root canal and the supporting periodontal apparatus. Iatrogenic root perforation is a major complication of endodontic and restorative treatments, leading to impairment of tooth prognosis. Successful management of root perforations is dependent on early diagnosis of the defect, location of the perforation, choice of treatment, materials used, host response, and the experience of the practitioner. This case report presents the successful management of an iatrogenic lateral root perforation in a tooth with radiographic evidence of periodontal healing over one year follow-up

Pharmacogenetics: CYPs, NAT2 and 5-HTT Related to Antidepressants

Pharmacogenetics (PGt), the study of a gene\u27s influence on patient response to a drug, shows strong potential for explaining issues with efficacy related to antidepressant medications. Each year, antidepressants are one of the most commonly prescribed medications due to the millions of Americans affected by depression. Importantly, it is recognized that there is wide interpatient variability in drug response to antidepressants caused by genetic mutations, which can alter the pharmacodynamic (PD) and pharmacokinetic (PK) properties of various drugs used to treat depression. Proteins that are mainly involved in how patients respond to medications include receptors, drug-targeted proteins, drug transport proteins and drug-metabolizing enzymes. Specifically in depression, variations in the serotonin reuptake transporter (SERT-1 or 5-HTT), N-acetyltransferase (NAT2), cytochrome P450 (CYP) 2C19, 2D6, and 1A2 can affect the outcomes of patients receiving certain antidepressant medications. Utilizing PGt can help prevent the trial and error in prescribing antidepressants and lead to better patient outcomes in the treatment of depression. Pharmacists can utilize genetic information to help primary care physicians choose drug regimens that are more likely to benefit their patients. Although advances are being made in this subject matter, some major efforts of future research will evaluate the efficacy of drug regimens and the dosing of drugs based on patient genetics

Literary Responses to 9/11: A Comparative Study of The Reluctant Fundamentalist and Terrorist

N

Effectiveness of pulse oximetry screening for congenital heart disease in asymptomatic new-borns

Background:Congenital Cardio-Vascular Malformations (CCVMs) are relatively common with a prevalence of 5-10 in every 1000 live births. CCVM represents a new-born condition that would be ideally suited to a screening program if simple and reliable methods were available. Pulse oximetry has been proposed as a screening method for the detection of congenital heart defects.Methods:Hospital based prospective non-randomized study conducted over a period of one year at the department of pediatrics in G.B. Panth hospital (Neonatology) and L.D. hospital (Neonatology). A total of 1200 asymptomatic new-borns attending G.B. Panth, neonatology/L.D. neonatology were screened with pulse oximetry. Oximetric screening for CCVM was performed by obtaining a single determination of postductal saturation at >24 hours. All new-borns underwent additional evaluation by echocardiography.Results:Out of 1200 newborns screened three had postductal saturation ≤95%. Echocardiography revealed TGA (transposition of great vessels) in one; TA (truncus arteriosus) in other and third one had structurally normal heart on echocardiography. There was one false negative screen (found in the inpatient records of G.B. Panth hospital). The sensitivity, specificity, positive predictive value and negative predictive value of pulse oximetry in screening for CCVM in asymptomatic new-borns was found to be 66.67%, 99.9%, 66.67% and 99.9% respectively.Conclusion:This screening test is simple, non-invasive and inexpensive. The sensitivity, specificity, and predictive value in this population were satisfactory, indicating that screening should be applied to larger populations, particularly in developing countries where lower rates of detection result in increased CCVM prevalence in asymptomatic new-borns.

Prevalence and associated risk factors of intestinal parasitic infections among children in pastoralist and agro-pastoralist communities in the Adadle woreda of the Somali Regional State of Ethiopia

BACKGROUND: Intestinal parasitic infections (IPIs) can cause illness, morbidity, and occasional mortality in children. Agro-pastoralist and pastoralist children in the Somali Regional State of Ethiopia (ESRS) are especially at risk for IPIs, as access to safe water, sanitation, and health services is lacking. Minimal data on the prevalence of IPIs and associated risk factors exists in this region. METHODOLOGY: We assessed the prevalence of IPIs and associated risk factors during the wet season from May-June 2021 in 366 children aged 2 to 5 years in four agro-pastoralist and four pastoralist kebeles (wards) in Adadle woreda (district) of the Shebelle zone, ESRS. Household information, anthropometric measurements, and stool samples were obtained from included children. Parasites were identified microscopically using Kato-Katz and direct smear methods. Risk factors were assessed using general estimating equation models accounting for clustering. PRINCIPAL FINDINGS: Overall prevalence of IPIs was 35%: 30.6% for single infections and 4.4% for poly-parasitic infections. Intestinal protozoan prevalence was 24.9%: 21.9% Giardia intestinalis, and 3.0% Entamoeba spp.. Intestinal helminth prevalence was 14.5%: 12.8% Ascaris lumbricoides, 1.4% hookworm (Ancylostoma duodenale /Necator americanus.), and 0.3% Hymenolepis nana. G. intestinalis infection was associated with drinking water sourced from the river (aOR 15.6, 95%CI 6.84, 35.4) and from collected rainwater (aOR 9.48, 95%CI 3.39, 26.5), with toilet sharing (aOR 2.93, 95%CI 1.36, 6.31) and with household ownership of cattle (1-5 cattle: aOR 1.65, 95%CI 1.13, 2.41; 6+ cattle: aOR 2.07, 95%CI 1.33, 3.21) and chickens (aOR 3.80, 95%CI 1.77, 8.17). A. lumbricoides infection was associated with children 36 to 47 months old (aOR 1.92, 95%CI 1.03, 3.58). CONCLUSIONS/SIGNIFICANCE: Improving access to safe water, sanitation, and hygiene services in Adadle and employing a One Health approach would likely improve the health of children living in (agro-) pastoralist communities in Adadle and the ESRS; however, further studies are required

Early results after transatrial repair of RVOT obstruction including teratology of fallot

Background: Right ventricular (RV) dysfunction is a significant cause of morbidity and mortality after surgical correction of RVOT obstruction including tetralogy of Fallot (TOF). Transatrial repair avoids a ventriculotomy (in contrast to the transventricular approach) emphasizing maximal preservation of RV structure and function. We have adopted this technique as less traumatic for the right ventricle. This study evaluates the early surgical results of our approach.Methods: Between January 2005 to January 2014, 77 consecutive patients with RVOT obstruction were referred to our unit for surgical therapy. Of these, 14 were unsuitable for repair and underwent aortopulmonary shunting. In the remaining 63 patients (mean age of 2.67±0.38 years), complete transatrial/transpulmonary repair was performed. Previously placed shunts (four patients) were taken down. In all cases, subpulmonary resection and ventricular septal defect (VSD) closure were accomplished transatrially. In 51 patients, the main pulmonary artery was augmented with an autologous pericardial patch.Results: There were 7 (9%) deaths in this series. No patient required permanent pacemaker. Median ICU and hospital stay were 91 hours and 14 days, respectively. At median follow up of 54 (mean 51±12) months, all patients are asymptomatic, with no significant residual lesion.Conclusions: Transatrial/transpulmonary repair of TOF is associated with remarkably low morbidity and mortality in our early experience

Modelling the coupling between intracellular calcium release and the cell cycle during cortical brain development

Most neocortical neurons formed during embryonic brain development arise from radial glial cells which communicate, in part, via ATP mediated calcium signals. Although the intercellular signalling mechanisms that regulate radial glia proliferation are not well understood, it has recently been demonstrated that ATP dependent intracellular calcium release leads to an increase of nearly 100% in overall cellular proliferation. It has been hypothesised that cytoplasmic calcium accelerates entry into S phase of the cell cycle and/or acts to recruit otherwise quiescent cells onto the cell cycle. In this paper we study this cell cycle acceleration and recruitment by forming a differential equation model for ATP mediated calcium-cell cycle coupling via Cyclin D in a single radial glial cell. Bifurcation analysis and numerical simulations suggest that the cell cycle period depends only weakly on cytoplasmic calcium. Therefore the accelerative impact of calcium on the cell cycle can only account for a small fraction of the large increase in proliferation observed experimentally. Crucially however, our bifurcation analysis reveals that stable fixed point and stable limit cycle solutions can coexist, and that calcium dependent Cyclin D dynamics extend the oscillatory region to lower Cyclin D synthesis rates, thus rendering cells more susceptible to cycling. This supports the hypothesis that cycling glial cells recruit quiescent cells (in G0 phase) onto the cell cycle, via a calcium signalling mechanism, and that this may be the primary means by which calcium augments proliferation rates at the population scale. Numerical simulations of two coupled cells demonstrate that such a scenario is indeed feasibl

Rapid Cdc13 turnover and telomere length homeostasis are controlled by Cdk1-mediated phosphorylation of Cdc13

Budding yeast telomerase is mainly activated by Tel1/Mec1 (yeast ATM/ATR) on Cdc13 from late S to G2 phase of the cell cycle. Here, we demonstrated that the telomerase-recruitment domain of Cdc13 is also phosphorylated by Cdk1 at the same cell cycle stage as the Tel1/Mec1-dependent regulation. Phosphor-specific gel analysis demonstrated that Cdk1 phosphorylates residues 308 and 336 of Cdc13. The residue T308 of Cdc13 is critical for efficient Mec1-mediated S306 phosphorylation in vitro. Phenotypic analysis in vivo revealed that the mutations in the Cdc13 S/TP motifs phosphorylated by Cdk1 caused cell cycle delay and telomere shortening and these phenotypes could be partially restored by the replacement with a negative charge residue. In the absence of Ku or Tel1, Cdk1-mediated phosphorylation of Cdc13 showed no effect on telomere length maintenance. Moreover, this Cdk1-mediated phosphorylation was required to promote the regular turnover of Cdc13. Together these results demonstrate that Cdk1 phosphorylates the telomerase recruitment domain of Cdc13, thereby preserves optimal function and expression level of Cdc13 for precise telomere replication and cell cycle progression

Origin of Irreversibility of Cell Cycle Start in Budding Yeast

In budding yeast, the commitment to entry into a new cell division cycle is made irreversible by positive feedback-driven expression of the G1 cyclins Cln1,2