Dynamic full-field optical coherence tomography module adapted to commercial microscopes allows longitudinal in vitro cell culture study.

Dynamic full-field optical coherence tomography (D-FFOCT) has recently emerged as a label-free imaging tool, capable of resolving cell types and organelles within 3D live samples, whilst monitoring their activity at tens of milliseconds resolution. Here, a D-FFOCT module design is presented which can be coupled to a commercial microscope with a stage top incubator, allowing non-invasive label-free longitudinal imaging over periods of minutes to weeks on the same sample. Long term volumetric imaging on human induced pluripotent stem cell-derived retinal organoids is demonstrated, highlighting tissue and cell organization processes such as rosette formation and mitosis as well as cell shape and motility.

[History of the rhenish and alsacian contributions to the understanding of diabetes].

The history of diabetes mellitus is punctuated from the Egyptian Antiquity by sometimes amazingly acute clinical observations and inversely several missed opportunities on the way of the discovery of the mechanisms of the disease and of the development of its therapies.Alsace, and more generally the Rhine countries, have played a major role in this adventure, of which a crucial step has been the experimental demonstration of the role of the pancrease in the pathogenis of the disease by Oskar Minkowski and Joseph von Mering in Strasbourg in 1889.

[Recurrent facial palsy, primary Gougerot-Sjögren's syndrome and vitamin B12 deficiency].

Introduction: Differing cranial nerve involvement has been reported in the context of Gougerot-Sjögren's syndrome. Involvement of the V, III and VII nerves has been reported, the most characteristic being nerve V, notably its lower branch. Rare, well documented, cases of facial palsy have also been described.

Retrospective monocentric study of 17 patients with adult Still's disease, with special focus on liver abnormalities.

Background/aims: Adult Still's disease is one of the febrile disorders of unknown etiology, characterized by high fever, transient cutaneous rash and leukocytosis. Liver dysfunction in adult Still's disease has been described in some case reports. The objective of this study was to analyze the pattern and the frequency of liver abnormalities in a monocenter series of adult Still's disease patients.

Modern management of non-chemotherapy drug-induced agranulocytosis: a monocentric cohort study of 90 cases and review of the literature.

BACKGROUND: The present study reports a monocentric experience of 90 drug-induced agranulocytosis cases and discusses their management, in particular the role of hematopoietic growth factors. METHODS: Data from 90 patients with drug-induced agranulocytosis who met the criteria of the IAAAS group and of Bénichou and Solal-Celigny [Nouv Rev Fr Hematol 1993; 33: 257.] were retrospectively reviewed.

[Biliary diffusion of tazocillin in man].

The objective of this study was to determine the extent of biliary excretion of tazocillin, a combination of piperacillin and tazobactam administered as an intravenous infusion in a dose of 4 g of piperacillin and 0.5 g of tazobactam. In 10 patients, piperacillin and tazobactam levels were determined in serum, main bile duct bile, gallbladder bile, and gallbladder wall specimens harvested during a cholecystectomy procedure 1 h after completion of a tazocillin infusion.

[Current status of the treatment of type 2 diabetes mellitus. Alpha-glucosidase inhibitors].

The development of antidiabetic drugs with complementary mechanisms of action appears more and more necessary in order to achieve durable glycaemic control in type 2 diabetes. By inhibiting in a reversible way the hydrolysis of disaccharides and the ultimate steps of the digestion of dietary polysaccharides, alpha-glucosidase inhibitors reduce postprandial blood glucose raise in diabetics. This therapeutic class, limited in Europe until recently to acarbose, has been enlarged with the marketing of miglitol, whose pharmacokinetic properties might lead to better long term tolerance.

[Current status of the treatment of type 2 diabetes mellitus. The revival of insulin-resistance drugs].

The relief of insulin resistance is one of the two therapeutic targets of the treatment of type 2 diabetes. Insulin-sensitizers are therefore complemental with other oral diabetic drugs. The treatment of insulin resistance was for a long time limited to dietary and exercise programmes, a biguanide, metformine, and benfluorex, a phenylethylamine derivative; the mechanisms of action of both drugs are now better understood and their indications more precisely targeted.

[Present status in the treatment of type 2 diabetes mellitus. Insulin-secreting agents].

The functional defect of the pancreatic beta cell represents one of the main therapeutic targets in type 2 diabetes mellitus. Among the currently available oral antidiabetic drugs, only hypoglycaemic sulfonylureas exhibit beta cell stimulating properties. However, their use has some limits, particularly those related to the risk of hypoglycaemia and the frequent secondary therapeutic failure.

Biliary tract infections: a guide to drug treatment.

Initial therapy of acute cholecystitis and cholangitis is directed towards general support of the patient, including fluid and electrolyte replacement, correction of metabolic imbalances and antibacterial therapy. Factors affecting the efficacy of antibacterial therapy include the activity of the agent against the common biliary tract pathogens and pharmacokinetic properties such as tissue distribution and the ratio of concentration in both bile and serum to the minimum inhibitory concentration for the expected micro-organism. Antimicrobial therapy is usually empirical.

[New therapies in type 2 diabetes].

The progress of knowledge relating to non-insulin-dependent diabetes mellitus (NIDDM) is associated with new therapeutic developments. Their different respective targets allow to classify them in drugs stimulating insulin secretion (glimepiride, repaglinide, glucagon-like peptide 1), medications reducing insulin resistance (thiazolidinediones) or in insulinmimetic agents (vanadium). Alpha glucosidase inhibitors, available in France since 1993, constitute another therapeutic approach, reducing postprandial hyperglycemia by delaying the digestion of complex carbohydrates.

Short-term variations of serum glycated apolipoprotein B.

Serum glycated apolipoprotein B (apo B-G) levels were determined in 31 non-insulin-dependent diabetic patients and 13 control subjects by an enzyme-linked immunosorbent assay. Apo B-G was increased in diabetic patients compared to non-diabetic subjects, whether expressed as a serum concentration (57.7 vs 36.

Assessment of biliary excretion of piperacillin-tazobactam in humans.

Piperacillin-tazobactam concentrations in serum and bile were measured intraoperatively in 10 patients undergoing cholecystectomy (group 1) and 5 cholecystectomized patients provided with external bile duct drainage (group 2). Each patient received a single intravenous dose of piperacillin at 4 g plus tazobactam at 0.5 g over 30 min.

Drug administration in chronic liver disease.

Cirrhosis encompasses a range of pathophysiological changes that may alter drug disposition. Drugs that are dependent primarily on the liver for their systemic clearance are more likely to be subject to reduced elimination and subsequent accumulation. Drug accumulation may lead to excessive plasma drug concentrations and adverse effects, if the adverse effects of the drug are concentration-dependent.

[Refsum disease].

Refsum's disease, firstly described almost 50 years ago by the Norvegian neurologist Sigvald Refsum, is an autosomic recessive disease affecting mostly the Scandinavians and the populations originating from Northern Europe. The disease results from a specific enzyme deficiency of the first step of phytanic acid catabolism pathway. This deficiency leads to an accumulation of this C20 fatty acid in the serum and the tissues with a preference for adipose tissue, liver and kidneys.

[Assessment of the role of enterocyte ion exchange in the intestinal absorption of amoxicillin, based on a study of the interaction with amiloride].

Intestinal dipeptide carrier system has been shown in vitro to be involved in intestinal absorption of betalactam antibiotics. Given that efficiency of this transport system depends on a pH gradient (extracellular pH < intracellular pH) at the brush-border membrane of enterocytes, we assessed the effects of amiloride, a known inhibitor of the Na-H exchange, on the bioavilability of oral amoxicillin in eight normal volunteers. Following a single 10 mg oral dose of amiloride, the absolute bioavailability of oral amoxicillin turned out to decrease by 27% (p < 0.

Amoxicillin intestinal absorption reduction by amiloride: possible role of the Na(+) -H+ exchanger.

Intestinal absorption of beta-lactam antibiotics has been shown to use the dipeptide carrier system. In vitro experiments have established that the efficiency of uptake by enterocytes depends on an inwardly directed proton gradient--dipeptides and beta-lactam antibiotics being cotransported along with hydrogen ion. This gradient is thought to result from the sodium-hydrogen (Na(+)-H+) exchanger located on the brush-border membrane.