Quincke's disease: an unusual pathology.

A 50-year-old male presents to the emergency department in rural Australia with a sore throat, globous sensation of his oropharynx and a swollen uvula. Within the previous 12 months, this was his third and most severe presentation of Quincke's disease. In all instances, it was aggravated by cold weather.

Pneumatosis cystoides coli in a patient with stage IV diffuse large B-cell lymphoma.

A 49-year-old female with a background of stage IV diffuse large B-cell lymphoma and subsequent graft-versus-host disease from a bone marrow transplant presented to a rural hospital in New South Wales, Australia with 12-h history of painless per rectal bleeding and fever. On examination she had a soft, but distended abdomen. Laboratory investigations revealed thrombocytopenia and hypokalaemia.

Enzyme production by Candida albicans and Candida dubliniensis in periodontal HIV-positive patients receiving and not receiving antiretroviral therapy.

Candida dubliniensis (Cd) and Candida albicans (Ca) are the most frequently isolated yeasts in HIV+ patients. Some of the enzymes produced by these yeasts are considered virulence factors since they contribute to pathogenicity of Candida spp. The aim of the present study was to compare production of enzymes such as phospholipase (Ph), proteinase (P), and hemolysin (H) by Cd and Ca strains isolated from periodontal HIV-positive patients receiving and not receiving highly active antiretroviral therapy (HAART).

Differential Effect of Articaine on Sarcoendoplasmic Reticulum Calcium Adenosine Triphosphatase of Medial Pterygoid Muscle.

Aims: To determine the effect of articaine on sarcoendoplasmic reticulum calcium adenosine triphosphatase (SERCA) isoforms of the medial pterygoid muscle.

Methods: Native SERCA from the medial pterygoid muscles of 24 rabbits was isolated by ultracentrifugation, and its isoforms were purified by chromatography and assessed by enzyme-linked immunosorbent assay (ELISA). SERCA activity and calcium transport capability were determined by using colorimetric and radioisotopic methods.

Characterization of third molar morphometric variables.

The third molar is a tooth of anatomical, surgical, prosthetic and forensic dental interest. However, there is currently a lack of updated data regarding its morphology. The aim of this study was to determine the morphometric features of third molars and their predictive capability as regards dental arch and side.

Parameters of oxidative stress in saliva from patients with aggressive and chronic periodontitis.

Objectives: Free radicals play an important role in the onset and progression of many diseases. The aim of this study was to investigate the contribution of oxidative stress in the pathology of aggressive (AgP) and chronic (CP) periodontitis and its relation with the clinical periodontal status.

Methods: Eighty subjects were divided into two groups: 20 patients with AgP and 20 patients with CP with their 20 corresponding matched controls, based on clinical attachment loss (CAL), probing pocket depth (PPD), and bleeding on probing (BOP).

Comparison of salivary levels of mucin and amylase and their relation with clinical parameters obtained from patients with aggressive and chronic periodontal disease.

Objective: Salivary mucin and amylase levels are increased in patients with chronic periodontitis (CP). Due to the fact that aggressive periodontitis (AgP) not only differs from chronic periodontitis in terms of its clinical manifestation, the aim of this study was to compare salivary mucin and amylase levels and their relation to the clinical parameters of patients with aggressive periodontitis with that of patients with chronic periodontitis.

Material And Methods: Eighty subjects were divided into two groups: 20 patients with AgP and their 20 matched controls and 20 patients with CP and their 20 matched controls, based on clinical attachment loss (CAL), probing pocket depth (PPD) and bleeding on probing (BOP).

Association between Aggregatibacter actinomycetemcomitans and Porphyromonas gingivalis in subgingival plaque and clinical parameters, in Argentine patients with aggressive periodontitis.

Background: Aggregatibacter actinomycetemcomitans (Aa) and Porphyromonas gingivalis (Pg) have been associated with aggressive (AgP) and chronic periodontitis.

Objective: The aim of this study was to evaluate the levels of Aa and Pg in gingival crevicular fluid (GCF) of patients with AgP and its relation with clinical parameters.

Design: Sixteen females and fourteen males with clinical diagnosis of AgP aged 17-23 years and their match's controls, were included in this study.

Assessment of physicians' perception of HIV+ patients' oral health.

The aim of this study was to design and validate an instrument for establishing perceptions of oral health held by physicians treating people living with HIV/AIDS. In order to design the instrument, four domains were identified that could measure the object of study and a 22-item questionnaire was created. The domains established were: knowledge of oral health; personal experience with oral health care; knowledge of oral health regarding HIV/AIDS; professional medical practices.

Expression of sarcoplasmic-endoplasmic reticulum Ca-ATPase isoforms in masticatory muscles.

The aim of this study was to characterize the sarcoplasmic-endoplasmic reticulum Ca-ATPase (SERCA) isoforms in rabbit masticatory muscles compared with those in fast-twitch muscle. It was hypothesized that combined expression of the SERCA isoforms in fast- and slow-twitch muscles accounts for lower Ca-ATPase activity. SERCA was isolated by differential centrifugation, the isoforms were determined by ELISA, and the activity of each isoform was measured using a colorimetric method.

Total salivary nitrates and nitrites in oral health and periodontal disease.

It is well known that nitrites are increased in saliva from patients with periodontal disease. In the oral cavity, nitrites may derive partly from the reduction of nitrates by oral bacteria. Nitrates have been reported as a defence-related mechanism.

Salivary IL-1β and PGE2 as biomarkers of periodontal status, before and after periodontal treatment.

Aim: Interleukin-1β (IL-1β) and prostaglandin E2 (PGE2 ) are key inflammatory mediators involved in periodontitis. The purpose was to compare their salivary concentrations in relation to periodontal status and their changes after periodontal treatment, to determine their use as non-invasive diagnostic tools.

Materials And Methods: In this study, 74 subjects grouped in periodontally healthy, mild, moderate and severe periodontitis, according to clinical attachment level (CAL) and probing pocket depth (PPD) served as participants.

Characterization of the sarcoplasmic reticulum Ca-ATPase from rabbit temporalis muscle.

Objective: The aim of this work was to isolate the sarcoplasmic reticulum (SR) Ca-ATPase from rabbit temporalis muscle and to determine the optimal conditions for calcium transport and enzymatic activity.

Design: SR vesicles were isolated from rabbit temporalis muscle by differential centrifugation, the protein composition analyzed by electrophoresis and compared to fast-twitch muscle membrane suspensions. ELISA was used to determine the sarcoendoplasmic reticulum Ca-ATPase (SERCA) isoform.

Relationship between dental status and family, school and socioeconomic level.

The aim of this study was to analyze the association between the knowledge, attitudes, practices and formal schooling ofparents and the oral health status in schoolchildren enrolled in educational institutions of different socioeconomic levels, using dental caries as the tracer disease. A convenience sample of 300 school children aged 6-14 years old and living in Mar del Plata city, Argentina, was composed according to income characterization in three strata: low, middle and high income. The children were grouped according to age (6-8, 9-11 and 12-14 years old).

Effect of articaine on calcium transport in sarcoplasmic reticulum membranes isolated from medial pterygoid muscle.

Local anesthetics used in dentistry have myotoxic effects. Articaine, also known as carticaine, is one of the local anesthetics most widely used in clinical dentistry. The aim of this work was to describe its effect on the sarcoplasmic reticulum Ca-ATPase isolated from medial pterygoid muscle.

Influence of experimental periodontitis on cholinergic stimulation of K⁺ release in rat parotid glands.

In a rat model of experimental periodontitis it was investigated whether the presence of the inflammatory disease induced changes in carbachol-induced fluid secretion in parotid glands, by monitoring potassium release. The potency of carbachol, to induce K⁺ release, was higher in parotid glands from rats with experimental periodontitis. The antagonist with higher affinity for M₃ muscarinic acetyl-choline receptor subtype, 4-DAMP (selectivity: M₁=M₃), was more potent in inhibiting K⁺ release in periodontitis rats while the antagonist with a muscarinic M₁-receptor-selective profile (selectivity: M₁>M₃), pirenzepine, was more potent in control rats.

Impact of oral health care needs on health-related quality of life in adult HIV+ patients.

The aim of this work was to determine the social impact of oral conditions on health-related quality of life in adult HIV+ patients and create a predictive model. The oral health impact profile questionnaire OHIP-49 was randomly administered to 200 HIV+ adults patients of any age and either sex at the High Risk Patients Dental Care Unit (CLAPAR I), School of Dentistry, University of Buenos Aires. Argentina.

Inhibitory effect of lidocaine on the sarcoplasmic reticulum Ca2+-dependent atpase from temporalis muscle.

Myotoxic effects of local anesthetics on skeletal musclefibers involve the inhibition ofsarcoplasmic reticulum Ca2+ -dependent ATPase activity and Ca2 transport. Lidocaine is a local anesthetic frequently used to relieve the symptoms of trigeminal neuralgia. The aim of this work was to test the inhibitory and/or stimulatory effect of lidocaine on sarcoplasmic reticulum Ca2+ -dependent ATPase isolated from rabbit temporalis muscle.

Dental beliefs in HIV+ patients with different oral health care needs.

The aim of this work was to assess the score variation of scales 1 and 2 of the DCBS (Dental Coping Beliefs Scale) of beliefs on oral health regarding oral health needs, clinical progression of the viral infection, medical care needs, age and gender in HIV+ patients. The DCBS was randomly administered to 102 HIV+ patients at the "Juan A. Fernandez Hospital", Buenos Aires, Argentina.

Effect of carticaine on the sarcoplasmic reticulum Ca2+-adenosine triphosphatase. II. Cations dependence.

Ca2+-ATPase is a major intrinsic protein in the sarcoplasmic reticulum (SR) from skeletal muscles. It actively transports Ca2+ from the cytoplasm to the SR lumen, reducing cytoplasmic [Ca2+] to promote muscle relaxation. Carticaine is a local anesthetic widely used in operative dentistry.