Biocompatible conjugated fluorenylporphyrins for two-photon photodynamic therapy and fluorescence imaging.

The photophysical properties of a new series of fluorenyl porphyrins bearing water-solubilising oligoethyleneglycol chains are described. These biocompatible compounds present very good two-photon absorption and singlet oxygen generation properties, while retaining some fluorescence in water. After testing in vitro on breast cancer cells, some of them were shown to be efficient non-toxic two-photon photosensitisers allowing for fluorescence imaging, thus demonstrating their theranostic potential.

Tri-chlorido-(1-ethyl-piperazin-1-ium)cobalt(II).

In the title complex, [Co(C6H15N2)Cl3], the Co(2+) ion is coordinated in a distorted tetra-hedral fashion by three chloride ions and one N atom of the piperazine ring; the ring adopts a chair conformation with the N-Co and N-CEt bonds in equatorial orientations. In the crystal, mol-ecules are connected by N-H⋯Cl hydrogen bonds, generating (10-1) sheets.

1-Phenyl-piperazine-1,4-diium tetra-chlorido-cobalt(II).

In the title mol-ecular salt, (C10H16N2)[CoCl4], the piperazine ring of the phenyl-piperazine dication adopts a chair conformation and the phenyl ring occupies an equatorial orientation. In the tetra-chlorido-cobaltate(II) dianion, the Co-Cl bond lengths for the chloride ions not accepting hydrogen bonds are significantly shorter than those for the chloride ions accepting such bonds. In the crystal, the components are linked by N-H⋯Cl hydrogen bonds, generating [001] chains.

First detection of Waddlia chondrophila in Africa using SYBR Green real-time PCR on veterinary samples.

Waddlia chondrophila is a strict intracellular microorganism belonging to the order Chlamydiales that has been isolated twice from aborted bovine fetuses, once in USA and once in Germany. This bacterium is now considered as an abortigenic agent in cattle. However, no information is available regarding the presence of this bacterium in Africa.

Overexpression of StDREB1 transcription factor increases tolerance to salt in transgenic potato plants.

It has been established that drought-responsive element binding (DREB) proteins correspond to transcription factors which play important regulatory roles in plant response to abiotic and biotic stresses. In this study, a novel cDNA encoding DREB transcription factor, designated StDREB1, was isolated from potato (Solanum tuberosum L.).

[Red blood cell immunization in haemoglobinopathie: about 84 cases].

Aims: To estimate the rate of red cell immunization in hemoglobinopathies.

Patients And Methods: Prospective study (1990-2009) about 84 patients: 44 homozygous sickle cell anemia, one heterozygous sickle cell anemia S/C, 30 thalassemia and nine sickle cell anemia-thalassemia. The mean age was 10.

Ectopic expression of dehydration responsive element binding proteins (StDREB2) confers higher tolerance to salt stress in potato.

Dehydration responsive element binding proteins (DREB) are members of a larger family of transcription factors, many of which have been reported to contribute to plant responses to abiotic stresses in several species. While, little is known about their role in potato (Solanum tuberosum). This report describes the cloning and characterization of a DREB transcription factor cDNA, StDREB2, isolated from potato (cv Nicola) plants submitted to salt treatment.

[Is it necessary to treat incisal protrusion in Tunisian children?].

It is thought that incisor protrusion could be ethnic-related because Tunisians, as Africans, might reflect the genetic influence of the incisal protrusion of their darker skinned neighbors. We first compiled local standards by determining the normal incisor positions of children of the Sfax region with balanced facial patterns. We selected 95 teenagers from 5 different high schools in Sfax (average age: 16 years 9 months), all having a normal dentition and a balanced facial pattern.

[Echographic symptomatology of peritonitis encapsulans].

The authors, try to establish an approach about ultrasonic pattern of capsulated peritonitis through study of four cases. The echographical semeology of this affection is based on: echoscopic signs which study the intestinal mobility and lumen, and the associated ascits: --echographic signs represented essentially by: --intestinal agglutination; --the presence of real or virtual capsula; --meso-retraction. The frequency of this affection seems to be not negligible in Tunisia.