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Biomedical subjects

C Caulin

Publications and source records attributed to C Caulin.

At least 109 records · Page 6Linked to original sources
PubMedDate not supplied

What is the better formulation of microencapsulated potassium chloride?

A single blind cross-over study was performed comparing a new microencapsulated potassium chloride tablet (MET) with two reference formulations of oral potassium, namely potassium chloride solution (PS), and microencapsulated potassium chloride capsules (MEC), in 18 normal healthy volunteers. The potassium chloride induced change in gastric potential difference (PD) of the mucosa was the main criterion of comparison and was assessed by the area above curve (AAC), the total duration of the effect (TDE), the maximal variation of PD (delta MAX), and the aggression index (AI). The results showed that all three formulations induced a fall in PD; the delta MAX and AAC were significantly greater for PS indicating a higher aggressive effect of the solution; MET had significantly less aggressive effect than MEC when assessed by all parameters.

Adult↗
PubMedDate not supplied

[Role of suindac in the treatment of familial adenomatous polyposis coli].

Familial adenomatous polyposis is a rare genetic disease characterized by the development of colorectal adenomatous polyps. Extracolonic digestive and extra-digestive manifestations can also appear. Inevitably, colorectal cancer occurs if a colectomy is not performed. Sulindac is an indolic non-steroidal anti-inflammatory indole drug which decreases colonic tumoral proliferation. The different trials published since 1983 have shown that sulindac caused regression of colorectal adenomatous polyps, but it does not affect the other manifestations of familial adenomatous polyposis. However, colorectal polyps recurred after cessation of this therapy; the effect of long-term sulindac therapy is unknown; and sulindac may cause, as a non-steroidal anti-inflammatory drug, digestive side-effects. Moreover, treatment with sulindac does not completely eliminate the risk of cancer. For patients with familial adenomatous polyposis, total colectomy and ileal pouch-anal anastomosis is the recommended procedure for most patients. However, sulindac is useful for patients who have had subtotal colectomy and ileorectal anastomosis, if these patients have only a few rectal stump polyps and accept regular and strict follow-up of the rectal stump. Sulindac is also indicated for patients who have not undergone colectomy because surgery is contraindicated or has been refused.

Adenocarcinoma↗
PubMedDate not supplied

[Self-medication: Is regulation needed...from whom?].

The participants attending the 1999 French Clinical Pharmacological meeting in Giens eventually reached a consensus about the necessity to set up a clear policy regarding self-medication products in France. Despite a wish by French people to take more responsibility for their own health care, self-medication products' use and development in France have been held back for many years for the reasons reported below. However, self-medication could be developed while respecting or even improving public health care by applying the following key principles: (1) the acknowledgement of a consensual definition. 'A self-medication drug is a drug (the guarantees for which are provided by marketing authorization approval and dispensation and advice of a pharmacist) specifically suitable for use without any physician's prescription'; (2) the advertising of self-medication products to the general public is authorized; (3) the safe use of self-medication products is linked to the selected indications and the relevance of the information provided to the general public; (4) the self-medication drug approval procedure could be simplified, managed by a specific AFSSAPS unit; (5) the role of the pharmacist involved, as well as suitable pharmacovigilance, is mentioned; (6) more than 1000 previously marketed drugs without any clear status, the so called 'grey zone drugs', should be taken into consideration. According to the participants at the meeting, it is possible to set up a new clear and dynamic policy for self-medication products in France in conformity with EU requirements.

France↗
PubMedDate not supplied

[Methods for studying the hepatic metabolism of drugs in man].

Various methods can be used to investigate human hepatic drug metabolism in vivo. a) Indirect methods based on the assessment of atoxic substances metabolism in order to investigate: --hepatic oxidative activity by antipyrine or caffeine clearance and aminopyrine breath test determination. Such an activity can be modified by drug-induced enzyme induction or inhibition and in case of hepatic disease; --genetic polymorphism of hepatic drug metabolism assessed by the determination of debrisoquine or dextrometorphane metabolic ratio and of N-acetylation phénotype. Unusual therapeutic or adverse effects could be explained by such a polymorphism; --hepatic blood flow, which variations could modify hepatic clearance of drugs with a high hepatic extraction ratio, by the assessment of indocyanine green clearance. b) Direct methods based on pharmacokinetics data and their alterations under various circumstances: simultaneous administration of other drugs, liver disease.

Humans↗