Tesserae on Venus may preserve evidence of fluvial erosion

Fluvial erosion is usually assumed to be absent on Venus, precluded by a high surface temperature of ~450 °C and supported by extensive uneroded volcanic flows. However, recent global circulation models suggest the possibility of Earth-like climatic conditions on Venus for much of its earlier history, prior to catastrophic runaway greenhouse warming. We observe that the stratigraphically oldest, geologically most complex units, tesserae, exhibit valley patterns morphologically similar to the patterns resulting from fluvial erosion on Earth. Given poor topographic resolution, we use an indirect technique to recognize valleys, based on the pattern of lava flooding of tesserae margins by adjacent plains volcanism. These observed valley patterns are attributed to primary geology, tectonic deformation, followed by fluvial erosion (and lesser wind erosion). This proposed fluvial erosion in tesserae provides support for climate models for a cool, wet climate on early Venus and could be an attractive research theme for future Venus missions.

The authors here use Magellan data to interpret geomorphological features on Venus and present a strong hypothesis for fluvial erosion.

Using Video Acquired from an Unmanned Aerial Vehicle (UAV) to Measure Fracture Orientation in an Open-Pit Mine

This project explored the feasibility of using video images acquired with an unmanned aerial vehicle (UAV) to obtain three-dimensional (3D) point clouds using structure from motion (SfM) software. Missions were flown using an Aeryon Scout: a lightweight, vertical take-off and landing quadrotor micro UAV with a miniature video camera. The initial mission captured urban scene images that were used to assess system performance while the main mission focused on rock walls where 3D images were used to successfully measure fracture orientations. Point clouds generated from this combination of technologies were sparse, but in the future, improvements in the resolution of original video images would cascade through the processing and improve the overall results. Such a system could have a multitude of applications in the mining industry, contributing to both safety and financial considerations.

P2-05-08: Expression of VE-Statin/egfl7 in Breast Cancer

Patients and methods: Specimens of breast cancer (174 invasive and 37 in situ) were obtained from 205 patients (pts) treated in our institution in 2005.Their median age was 57 years (39-92). VE-statin expression was studied by immunohistochemistry (IHC) using anti-hVE-statin/egfl7 (AF3638, R&D) and by RT-qPCR on formalin-fixed paraffin sections. 174 invasive carcinomas (141 ductular and 30 lobular) and 37 DCIS were studied. Determination was done twice by two different observers. Statistics used Chi2 and Fisher's exact tests for categorical data and Kruskall-Wallis test for continuous variables.

Results: Pathological characteristics of the patients with invasive tumors were as follows: 81% ductular, 17% lobular; median tumor size 18 mm (2-100); SBR grade 1 in 27%, 2 in 58% and 3 in 15% of the tumors; estradiol receptor (ER) + in 90%, progesterone receptor (PR) + in 66%; 6,5% HER2 positive. In 105 cases there was DCIS together with invasive tumors. For invasive tumors and DCIS, progression-free survival (PFS) at 5 years were 85% and 100% and overall survival (OS) 96% and 95%, respectively. Characteristics of the DCIS were median tumor size 18 mm (2-60), ER+ in 88%, PR+ in 62%. IHC results were obtained in 159 invasive carcinoma and 34 DCIS, RT-qPCR results in 96 samples. In the group of invasive tumors, a cytoplasmic VE-statin/egfl7 signal was obtained in 80% of invasive cells, more frequently than in normal glandular cells (71% vs 41%, p=0,003) but significantly less than in peritumoral DCIS (71% vs 89%, p=0,001). The signal was higher in ductular than in lobular carcinoma (85% vs 54%, p=0,003). In RT-qPCR analyses, RNA levels were higher in SBR1 grade tumors (p=0,008), in ER+ invasive tumors (p=0,02) and in pN- tumors (p=0,003). In the group of DCIS, a cytoplasmic signal was obtained in 82% of the cells. It was more frequently observed in tumor than in normal glandular cells (82% vs 52%, p=0,02). A 3+ cytoplasmic signal was more frequent in DCIS alone than in DCIS associated with invasive carcinoma (23% vs 6%, p=0,02). No prognostic significance differences were observed on PFS or on OS.

Discussion: This work is the first expression study of VE-statin/egfl7 in breast cancer. The results were reproduced by two different observers. IHC signal was cytoplasmic and higher in DCIS than in invasive carcinomas. Furthermore the signal was even higher when there was only DCIS than when it was associated with invasive lesion. The signal was higher in ductular than lobular carcinoma, consistent with previous publications on other angiogenesis mediators. Similarly, the signal was higher in low SBR grade, as well in ER positive tumors. Phase 1 studies are ongoing in order to evaluate the effects of inhibition of VE-statin/egfl7.

Citation Information: Cancer Res 2011;71(24 Suppl):Abstract nr P2-05-08.

Sediment profile characterisation at contaminated and reference locations in the Windmill Islands, East Antarctica

Sediment profiles for pH, Eh, 28 elements, water and organic content are presented here for human impacted and reference locations in the Windmill Islands, East Antarctica. Variations in element concentrations are observed with increasing depth, especially at Brown Bay where the impact of past human activities is most pronounced in the top 10 cm. Spatial differences were observed between sediment profiles at reference and impacted locations and were largely explained by Pb variability in the top 5 cm. Median element concentrations from surface, middle and bottom regions of the sediment profile were compared to composite sample medians (no depth stratigraphy) for 11 elements at O'Brien Bay (reference) and Brown Bay (impacted). Pronounced differences were observed for Brown Bay, particularly surface and middle sections, implying that composite samples dilute the near surface anthropogenic signal by mixing with deeper uncontaminated sediment.

[Malignancy risk and Wiedemann-Beckwith syndrome: what follow-up to provide?]

Wiedemann-Beckwith syndrome (WBS) is a syndrome of excessive growing with a high predisposition to developing embryologic tumours within the first years of life. This risk is evaluated between 7.5 and 10%; it varies with the mechanisms of mutations involved. These take place in two distinct domains of 11p15, which are under parental printing. Emerging techniques of cytogenetic and molecular biology now have shown correlations between genotypes and phenotypes, and can identify the 30% of WBS who are especially at risk of developing tumours. A specific follow-up, integrating the specificity of developing tumours of each 11p15 mutations involved, is now proposed to patients with WBS.

ENPP1 K121Q polymorphism and obesity, hyperglycaemia and type 2 diabetes in the prospective DESIR Study

AIMS/HYPOTHESIS

We assessed the predictive value of ectonucleotide pyrophosphatase/phosphodiesterase 1 gene (ENPP1) SNPs with regard to the risk of developing obesity and/or type 2 diabetes in a large French general population.

METHODS

We genotyped the ENPP1 SNPs K121Q (rs1044498), IVS20delT-11 (rs1799774) and A/G+1044TGA (rs7754561) in 5,153 middle-aged participants of the Data from an Epidemiological Study on the Insulin Resistance Syndrome (DESIR) cohort.

RESULTS

At baseline, the K121Q polymorphism was not associated either with BMI (p = 0.98) or with class I obesity (odds ratio [OR] 0.99, p = 0.81), but showed a borderline association with class II obesity (OR 1.65, p = 0.02). The K121Q variant was not associated with any trait during the 9-year follow-up. Pooled analyses both at baseline and at follow-up failed to show any association with hyperglycaemia (OR 1.08, p = 0.28) or type 2 diabetes (OR 1.15, p = 0.38). However, we did show an association of the Q121 allele with the risk of hyperglycaemia (OR 1.45, p = 0.001; n = 265) and type 2 diabetes (OR 1.65, p = 0.01; n = 103) in participants reporting a family history of type 2 diabetes. These results did not remain significant after a Bonferroni correction. The IVS20delT-11 and A/G+1044TGA polymorphisms and the three-allele risk haplotype (K121Q, IVS20delT-11 and A-->G+1044TGA [QdelTG]) were not associated with any trait, either at baseline or at follow-up.

CONCLUSIONS/INTERPRETATION

In a general French population we did not find an association of the QdelTG risk haplotype with adult obesity and type 2 diabetes. We detected nominal evidence of association between the K121Q polymorphism and both severe adult obesity at baseline and the risk of hyperglycaemia or type 2 diabetes in participants with a family history of type 2 diabetes in pooled analyses both at baseline and follow-up.

Single nucleotide polymorphisms in the neuropeptide Y2 receptor (NPY2R) gene and association with severe obesity in French white subjects

AIMS/HYPOTHESIS

Genetic variants of genes for peptide YY (PYY), neuropeptide Y2 receptor (NPY2R) and pancreatic polypeptide (PPY) were investigated for association with severe obesity.

SUBJECTS AND METHODS

The initial screening of the genes for variants was performed by sequencing in a group of severely obese subjects (n=161). Case-control analysis of the common variants was then carried out in 557 severely obese adults, 515 severely obese children and 1,163 non-obese/non-diabetic control subjects. Rare variants were genotyped in 700 obese children and the non-obese/non-diabetic control subjects (n=1,163).

RESULTS

Significant association was found for a 5' variant (rs6857715) in the NPY2R gene with both severe adult obesity (p=0.002) and childhood obesity (p=0.02). This significant association was further supported by a pooled allelic analysis of all obese cases (adults and children, n=928) vs the control subjects (n=938) (p=0.0004, odds ratio=1.3, 95% CI 1.1-1.5). Quantitative trait analysis of BMI and WHR was performed and significant association was observed for SNP rs1047214 in NPY2R with an increase in WHR in the severely obese children (co-dominant model p=0.005, recessive model p=0.001). Association was also observed for an intron 3 variant (rs162430) in the PYY gene with childhood obesity (p=0.04). No significant associations were observed for PPY variants. Only one rare variant in the NPY2R gene (C-5641T) was not found in lean individuals and this was found to co-segregate with obesity in one family.

CONCLUSIONS/INTERPRETATION

These results provide evidence of association for NPY2R and PYY gene variants with obesity and none for PPY variants. A rare variant of the NPY2R gene showed evidence of co-segregation with obesity and its contribution to obesity should be investigated further.

Genetic study of the CD36 gene in a French diabetic population

OBJECTIVES

CD36 is a multifunctional membrane receptor widely expressed in different tissues which binds and internalizes oxidized low-density lipoprotein. In rodents, CD36 gene variations modulate glucose homeostasis and contribute to metabolic syndrome associated with type 2 diabetes but the effects in human are unknown.

METHODS

We screened the entire coding sequence of the CD36 gene in 272 individuals and we genotyped both rare and frequent variants in 454 T2D subjects and 221 controls.

RESULTS

We detected five mutations, P191P and N247S were only found each in one family and did not segregate with diabetes, the three others (A/C-178 in the promoter, A/G-10 in intron 3 and (GGGTTGAGA) insertion in intron 13) being equally frequent in diabetic subjects and in controls. However, adiponectin levels, a marker for insulin sensitivity, were significantly associated with the -178 A/C promoter variant allele (p=0.003, p corrected for multiple testing=0.036), possibly reflecting association with insulin-resistance in the French population.

CONCLUSION

Thus, the -178 A/C SNP promoter mutation in the CD36 gene represents a putative genetic marker for insulin-resistance in the French population, although it does not appear to contribute to the genetic risk for T2D.

Routine mutation screening of HNF-1alpha and GCK genes in MODY diagnosis: how effective are the techniques of DHPLC and direct sequencing used in combination?

AIMS/HYPOTHESIS

Mutations in the hepatocyte nuclear factor (HNF)-1alpha and glucokinase (GCK) genes are the major causes of monogenic forms of Type II (non-insulin-dependent) diabetes mellitus (Maturity-Onset Diabetes of the Young subtypes, MODY). We evaluated the effectiveness of fluorescent single-strand conformation polymorphism (F-SSCP), denaturing high-performance liquid chromatography (DHPLC) and sequencing based mutation detection in the molecular diagnosis of MODY. Our goal is to identify a rapid, efficient and cost effective mutation detection method for the molecular diagnosis of MODY and other human genetic disorders.

METHODS

We evaluated the accuracy of DHPLC in screening for MODY 2 and 3 mutations. In addition, we compared the sensitivity, specificity, cost, handling time and analysis time of fluorescent single-strand conformation polymorphism, denaturing high-performance liquid chromatography and direct sequencing screening methods.

RESULTS

Denaturing high-performance liquid chromatography is a recently developed method for mutation detection. It is cost effective, powerful and reliable and quite suitable for 22 out of the 24 fragments required for MODY 2 and 3 testing. However, exons 1 and 7 of the HNF-1alpha gene are very polymorphic and so direct sequencing is faster as well as more efficient and reliable.

CONCLUSION/INTERPRETATION

Our results suggest that combining denaturing high-performance liquid chromatography and direct sequencing is a good approach for the routine detection of HNF-1alpha and GCK mutations in MODY families. Denaturing high-performance liquid chromatography appears to be a powerful tool in genetic testing and the method could be applied to the molecular diagnosis of other human genetic diseases.

Post-herpes encephalitic anterior pituitary insufficiency with hypothermia and hypotension

A 49-year-old man with herpes simplex encephalitis at age 22 was admitted with hypotension (90/60 mm Hg) and hypothermia (33.7 degrees C). His blood pressure was 80-90/50-60 mm Hg, with temperatures averaging 35 degrees C, for at least 3 years before admission. Evaluation of his hypothermia and hypotension revealed a low free triiodothyronine, low normal thyrotropin, luteinizing hormone < 2 mIU/L, follicle stimulating hormone <3 mIU/L, and low testosterone of 1.39 ng/dL. A baseline cortisol of 13.9 microg/dL was stimulated to 41.8 microg/dL with corticotropin, indicating he had partial anterior hypopituitarism with an intact pituitary-adrenal axis. Posterior pituitary function was normal. MRI revealed a "bright" posterior pituitary on a T1-weighted image, further indicating a normal posterior pituitary. Extensive decreased T1-weighting on MRI in the right and left temporal lobes was consistent with encephalomalacia. With thyroid hormone replacement, his blood pressure increased to 110/70 mm Hg with a temperature of 37 degrees C.

Milk of calcium fluid collections in juvenile dermatomyositis: MR characteristics

Children with dermatomyositis may have extensive subcutaneous and intermuscular calcium-laden fluid collections referred to as "milk of calcium." The distinctive MR appearance of such collections in an upper extremity of a 16-year-old girl is presented. MR can differentiate these collections from abscesses and guide appropriate therapy.

[Sexual fantasies and sexual dreams: a sexoanalytical exploration]

Nowadays there are more and more empirical studies of sexual fantasies. Fewer are researches on sexual dreams. Even less common are the data on the relation between sexual fantasies and sexual dreams. A lot of questions can be brought up. Is there a correlation between the frequency in fantasies and sexual dreams? Is there a concordancy or discrepancy between these two? What would be the differences between the persons whom sexual fantasies and dreams concord from those who don't concord? Finally is there an interaction between fantasies and sexual dreams? Based on our preliminary results, we present our mains hypothesis and few illustrations.

Generation of an integrated transcription map of the BRCA2 region on chromosome 13q12-q13

An integrated approach involving physical mapping, identification of transcribed sequences, and computational analysis of genomic sequence was used to generate a detailed transcription map of the 1. 0-Mb region containing the breast cancer susceptibility locus BRCA2 on chromosome 13q12-q13. This region is included in the genetic interval bounded by D13S1444 and D13S310. Retrieved sequences from exon amplification or hybrid selection procedures were grouped into physical intervals and subsequently grouped into transcription units by clone overlap. Overlap was established by direct hybridization, cDNA library screening, PCR cDNA linking (island hopping), and/or sequence alignment. Extensive genomic sequencing was performed in an effort to understand transcription unit organization. In total, approximately 500 kb of genomic sequence was completed. The transcription units were further characterized by hybridization to RNA from a series of human tissues. Evidence for seven genes, two putative pseudogenes, and nine additional putative transcription units was obtained. One of the transcription units was recently identified as BRCA2 but all others are novel genes of unknown function as only limited alignment to sequences in public databases was observed. One large gene with a transcript size of 10.7 kb showed significant similarity to a gene predicted by the Caenorhabditis elegans genome and the Saccharomyces cerevisiae genome sequencing efforts, while another contained a motif sequence similar to the human 2',3' cyclic nucleotide 3' phosphodiesterase gene. Several retrieved transcribed sequences were not aligned into transcription units because no corresponding cDNAs were obtained when screening libraries or because of a lack of definitive evidence for splicing signals or putative coding sequence based on computational analysis. However, the presence of additional genes in the BRCA2 interval is suggested as groups of putative exons and hybrid selected clones that were transcribed in consistent orientations could be localized to common physical intervals.

A four-year experience with laparoscopy in the management of appendicitis

BACKGROUND

The study was conducted to determine the influences of laparoscopy in the management and outcome of patients with appendicitis.

METHODS

A retrospective analysis of 154 consecutive patients who were treated for suspected appendicitis. The pre-operative diagnosis included appendicitis, right lower quadrant pain of unknown etiology, and generalized peritonitis.

RESULTS

Laparoscopy was used in 108 patients, including 70 laparoscopic appendectomies (LA) and 31 LAs converted to open appendectomy (OA). Forty-six patients had OA. The average operating time for LA was 74.3 minutes and 48.8 minutes with OA. Postoperative complications for LA (7%) included 1 trochar wound hemorrhage, 2 wound infections, and 2 intra-abdominal sepsis; and for OA (9%) were 1 post-operative intra-abdominal hemorrhage, 4 wound infections, 1 wound dehiscence, and 1 intra-abdominal sepsis. Post-operative stay for LA averaged 2.5 days and for OA averaged 4.5 days (P = .0049). LA patients had a considerably faster return to work and/or normal activity than OA patients (P = .00065).

CONCLUSIONS

Laparoscopy influenced the management of 29% of patients presenting with suspected appendicitis. LA resulted in shorter hospitalization and a more rapid return to work and/or normal activity than OA.

The complete BRCA2 gene and mutations in chromosome 13q-linked kindreds

Breast carcinoma is the most common malignancy among women in developed countries. Because family history remains the strongest single predictor of breast cancer risk, attention has focused on the role of highly penetrant, dominantly inherited genes in cancer-prone kindreds (1). BRCA1 was localized to chromosome 17 through analysis of a set of high-risk kindreds (2), and then identified four years later by a positional cloning strategy (3). BRCA2 was mapped to chromosomal 13q at about the same time (4). Just fifteen months later, Wooster et al. (5) reported a partial BRCA2 sequence and six mutations predicted to cause truncation of the BRCA2 protein. While these findings provide strong evidence that the identified gene corresponds to BRCA2, only two thirds of the coding sequence and 8 out of 27 exons were isolated and screened; consequently, several questions remained unanswered regarding the nature of BRCA2 and the frequency of mutations in 13q-linked families. We have now determined the complete coding sequence and exonic structure of BRCA2 (GenBank accession #U43746), and examined its pattern of expression. Here, we provide sequences for a set of PCR primers sufficient to screen the entire coding sequence of BRCA2 using genomic DNA. We also report a mutational analysis of BRCA2 in families selected on the basis of linkage analysis and/or the presence of one or more cases of male breast cancer. Together with the specific mutations described previously, our data provide preliminary insight into the BRCA2 mutation profile.

Generation of a transcription map at the HSD17B locus centromeric to BRCA1 at 17q21

A detailed transcription map of the 320-kb region containing the HSD17B locus on chromosome 17 was generated. Thirty unique cDNA fragments, retrieved following the hybridization of immobilized YACs to primary pools of cDNAs prepared from RNA of mammary gland, ovary, placenta, and the Caco-2 cell line, were aligned into 10 transcription units by physical mapping and hybridization to RNAs of a series of tissues. The cDNAs were then further characterized by sequencing and used to screen mammary gland cDNA libraries. Fragments corresponding to the broadly expressed gamma-tubulin and Ki antigen genes were identified. A full-length cDNA clone encoding a 117-amino-acid protein homologous to the rat ribosomal protein L34 was isolated. Portions of genes with restricted patterns of expression were also obtained, including the previously characterized HSD17B1. One new gene, for which a full-length cDNA was isolated, was found to have an interesting tissue-specific pattern of expression with abundant mRNA in both the colon and the testis and in the mammary carcinoma cell line BT-474. This contrasted with the barely detectable level observed in several tissues including normal mammary gland. Of the five additional transcription units identified, one showed no similarity, two showed identity to human expressed sequences, and two displayed similarity to genes of animal species by amino acid alignment. These latter cDNA clones include potential homologues of a rat nuclear tyrosine phosphatase and of a factor of Drosophila that is known to be involved in the negative regulation of transcription of segment identity genes.

Common origins of BRCA1 mutations in Canadian breast and ovarian cancer families

Women who carry mutations in the BRCA1 gene on chromosome 17q have an 85% lifetime risk of breast cancer, and a 60% risk of ovarian cancer. We have identified BRCA1 mutations in 12 of 30 (40%) Canadian families with breast and/or ovarian cancer, including six of the eight families (75%) that contained two cases of early-onset breast cancer and two cases of ovarian cancer. Six frameshift mutations account for all 12 mutant alleles, including nucleotide insertions (two mutations) and deletions (four mutations). Four independent families carried the same 1 basepair (bp) insertion mutation in codon 1755 and four other families shared a 2 bp deletion mutation in codons 22-23. These families were not known to be related, but haplotype analysis suggests that the carriers of each of these mutations have common ancestors.

Relevance of antibody content and test format in HIV testing of pooled sera

OBJECTIVE

To determine the effects of HIV-1 antibody level and test-format characteristics on testing pooled sera.

DESIGN

This study was designed with a laboratory exercise followed by test observations on serosurveillance samples.

METHODS

Sera with low, medium and high (n = 22, 12 and 20, respectively) antibody titers were pooled with HIV-1-negative sera and tested with two enzyme-linked immunosorbent assays (ELISA) and a particle agglutination test. The same kits were used to test single and pooled (batches of five, 10 and 20) samples collected from 3000 blood donors and sex workers. These samples were then seeded with 50 varying antibody-containing sera and similarly tested. Initial reactivities, sensitivities, and specificities for all test kits were calculated and compared.

RESULTS

In the laboratory exercise, all reactive pools of five were detected. False-negative pools in batches of 10 and 20 with low antibody titers were noted with one or both ELISA, but not with the particle agglutination method. Testing 3000 samples revealed three confirmed reactive samples and 100% sensitivity/specificity for all kits, for both single and pooled sera testing. Increased initial reactivity (IR) was noted for the two ELISA. Examinations of pools of the seeded 3000 samples with the two ELISA showed false-negative reactivity with pools of 10 and 20 when pools contained low antibody sera (sensitivities and specificities of 92-97.9% and 98.1-100%, respectively). Again, increased IR was seen with the ELISA. False-negative pool and increased IR was not seen with the agglutination test (sensitivity/specificity 100%).

CONCLUSIONS

We recommend the use of the particle agglutination assay for testing pooled sera of batches of 20 or less. Components of reactive pools should then be tested and reactive samples should undergo supplementary testing. Pooled samples tested by ELISA should not exceed five per batch. Retesting of reactive pools, testing of its components, and supplemental test(s) of reactive sera should then follow. The optimum pool size for most laboratories is five, with the best technical and economic performance seen with the particle agglutination assay.

Use of an angiotensin converting enzyme inhibitor in ocular hypertension and primary open-angle glaucoma

We studied the effects of a new topical angiotensin converting enzyme inhibitor, SCH 33861, in lowering intraocular pressure in 20 patients with ocular hypertension or primary open-angle glaucoma. In a double-masked, four-way crossover study with placebo and timolol, SCH 33861 was well tolerated and effective in lowering intraocular pressure. The magnitude of the drug's effect in lowering intraocular pressure was less than that of timolol 0.5%.

Comparison of hypothalamus-pituitary-adrenal axis suppression from superpotent topical steroids by standard endocrine function testing and gas chromatographic mass spectrometry

We evaluated 38 males who had psoriasis vulgaris for evidence of hypothalamus-pituitary-adrenal axis suppression (HPAS) during treatment with superpotent topical glucocorticosteroids. All men were treated with 49 g per week of either Betamethasone Diproprionate in an optimized vehicle or Clobetasol Proprionate ointment. Three methods used to assess HPAS were compared. Classic 8 a.m. plasma cortisol measurements, urinary-free cortisol, and 17-hydroxycorticosteroid determinations and gas chromatograph-mass spectrometry (GCMS) quantitation of urinary cortisol metabolites were compared. Values for all methods were obtained just prior to therapy and at days 4, 7, 14, and 21 during therapy and at day 28 after treatment was stopped for 7 d. Plasma cortisol measurements correlated well with other measures of HPAS. GCMS determination of urinary cortisol metabolites was slightly more sensitive at detecting HPAS than the other two methods. Persistent HPAS after day 7 was only appreciated by GCMS. Urinary-free cortisol and 17-hydroxycortisol was the least sensitive of the three methods. Analysis of urinary cortisol metabolites by GCMS may be most useful in the monitoring of HPAS resulting from use of topical glucocorticosteroid preparations.

[Imported malaria in a tropical unit in Paris. About 100 cases (author's transl)]

From a hundred cases of imported malaria observed in Paris, the authors emphasize the following points: annual increase of cases, lack or inadequacy of prophylaxis, frequent reinfestations among black africans living in France, and comming back in endemic area for a brief journey, high risks for pregnant women.