This article reports on an exploratory study of medical cannabis users. Interviews were completed with 50 self-identified medical cannabis users recruited through notices in newspapers and on bulletin boards. They reported using cannabis for a variety of conditions including HIV-AIDS-related problems, chronic pain, depression, anxiety, menstrual cramps, migraine, narcotic addiction as well as everyday aches, pains, stresses and sleeping difficulties. A majority also used cannabis for recreational purposes, and many were longer-term cannabis users. However, there were some notable exceptions. Almost all smoked cannabis and many did so two to three times a day. Few admitted negative experiences with cannabis, although some problems evident to the researchers were not clearly admitted. Those who told their doctors about their medical cannabis use found doctors noncommittal or supportive. The results raise questions about the definition of medical cannabis use and about policies that might be developed to accommodate such use. Limitations of the study are noted and further research suggested. Research priorities include population surveys, studies involving larger, more representative samples of medical cannabis users and studies of medical cannabis use among people with HIV-AIDS.

Acquired Immunodeficiency Syndrome↗

PubMedDate not supplied

Percutaneous absorption of sunscreens in vitro: interspecies comparison, skin models and reproducibility aspects.

Appropriate evaluation of sunscreens is required to provide better knowledge of their safety and efficacy. One of the most important elements of this evaluation is the assessment of percutaneous absorption. In vitro methods are largely used for such assessments, and the accuracy of the measurements generated with these methods depends on the use of a proper methodology. This study was designed to evaluate an in vitro protocol for investigating the percutaneous absorption of two sunscreens under standardized experimental conditions. Octyl methoxycinnamate and benzophenone 4 were each incorporated in a typical oil-in-water emulsion and tested separately. Salicylic acid was tested as a reference compound. In vitro percutaneous absorption was evaluated using two species, the pig and human, and two models, full-thickness and split-thickness skin. The reproducibility of study results was evaluated by comparing the data generated by two industrial laboratories, L'Oréal and Hoffmann-La Roche. The correlation of quantitative data between pig skin and human skin was very good, and the split-thickness skin model seemed to be more appropriate for measuring the absorption of sunscreens. Results obtained for salicylic acid demonstrated the relevance of the protocol in terms of prediction of in vivo percutaneous absorption. Finally, the comparison of pig skin data between the two laboratories demonstrated a good correlation and underlined the need for a standardized in vitro procedure.

Animals↗

PubMedDate not supplied

Comparison of biosynthetic human insulin and pork insulin during rest, food ingestion, and physical work in insulin-dependent diabetic subjects using a glucose controlled insulin infusion system.

In six insulin-dependent diabetic subjects, we investigated whether differences between biosynthetic human insulin (BHI) and pork insulin are present as measured by an automatic glucose controlled insulin infusion system (GCIIS) (Biostator). The parameters measured were basal insulin requirement and food-dependent insulin requirement, as well as the blood sugar-lowering and insulin-saving effect of standardized physical work. The results show that BHI does not reveal any differences with regard to the basal food-independent and food-dependent insulin requirement compared to pork insulin in insulin-requiring diabetic subjects. Delayed food-dependent initial rise in blood sugar and insulin during physical work, which was observed with BHI, does not show any differences in the integral over 180 min. These investigations confirm the results found in vitro and in animal experiments. At the same time, they indicate discrete differences in the activity spectrum.

Animals↗

PubMedDate not supplied

Surgical treatment of parathyroid carcinoma (Review).

Cancer of the parathyroid gland is rare and most patients suffer from hyperparathyroidism (HPT). Therefore it is often difficult to distinguish between benign HPT and malignant disorders. Prognosis as well as therapeutic approaches are still limited. Surgical treatment should be considered the therapy of choice for primary and recurrent manifestation of parathyroid carcinoma. The initial operation includes en-bloc resection of the tumor and the ipsilateral thyroid lobe. Surgery may cure some patients, but is often only palliative and aims to control hypercalcemia. In some patients hypercalcemia may be refractory to repeated surgery and medical treatment can provide short- or middle-term effects.

Humans↗

PubMedDate not supplied

Clinical and laboratory diagnosis of Creutzfeldt-Jakob disease.

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Biomarkers↗

PubMedDate not supplied

Relation of C-reactive protein levels to presence, extent, and severity of angiographic coronary artery disease.

BACKGROUND: C-reactive protein is a valid marker of cardiovascular risk. It is not known whether C-reactive protein is a marker of atherosclerotic burden or whether it reflects a process (e.g. inflammatory fibrous cap degradation) leading to acute coronary events. This study was performed to determine whetherthe concentration of C-reactive protein is associated with coronary atherosclerosis assessed by coronary angiography. METHODS AND RESULTS: We studied a total of 100 men and women (41 women, 59 men, mean age 63.7 +/- 11.0 years) who were referred for coronary angiography. Baseline data collection comprised clinical characteristics and conventional risk factors for coronary artery disease, levels of serum lipids and fasting total homocysteine levels. The relation between serum C-reactive protein levels and the severity and extension of coronary lesions was studied. The coronary angiograms were evaluated in a blinded manner according to three scores: vessel score (0-3 points for 0-3 vessels with coronary artery disease), stenosis score (0-3 points: number and severity of coronary stenoses or lesions; 0 for no, 1 for coronary lesion with diameter stenosis less than 50%, 2 for 50%-75%, and 3 for more than 75% diameter stenosis), and extent score (0-3 points; segment-extension of all coronary lesions within the total coronary vessel length). According to the total score values obtained, groups for coronary artery disease risk were defined and analyzed forcorrelations with age and levels of total cholesterol. high-density lipoprotein cholesterol, low-density lipoprotein cholesterol, triglycerides, fasting total homocysteine. and C-reactive protein in serum. From the 100 patients, 40 were found to have no or minimal coronary artery disease (group A; score 0-3), 33 had moderate (group B; score 4-8) and 27 had severe (group C: score more than 8) coronary artery disease assessed by coronary angiography. Estimates of the relative risk of coronary heart disease for the third quintile of serum C-reactive protein as compared with the first quintile were 1.79 (95 percent confidence interval 1.23-2.39). Serum C-reactive protein levels were 3.54 (+/- 7.07) mg/L, 11.41 (+/- 13.5) mg/L and 5.66 (+/- 8.32) mg/L in groups A, B and C and represented an independent risk factor for the presence of coronary artery disease assessed by coronary angiography (p<0.01). With step-wise logistic regression analyses, use of C-reactive protein values maintained the ability to predict the probability of coronary artery disease. Moreover, the presence of angiographic coronary artery disease was associated with patient age (p=0.048), male sex (p<0.01), high LDL-cholesterol levels (p=0.02), low HDL-cholesterol levels (p=0.02), high plasma fibrinogen levels (p<0.01) and high fasting total homocysteine levels (p=0.04). CONCLUSIONS: These results suggest that the serum concentration of C-reactive protein is associated with presence, but not severity, of coronary artery disease in patients referred for coronary angiography.

Adult↗