Abstract The chemical composition of the essential oils of the aerial parts (stems and leaves: sample A) and flowers (sample B) of Cladanthus arabicus Cass., were analysed by GC-MS. Monoterpenes hydrocarbons constituted the main chemical group in both essential oils, with Sabinene, β-pinene, α-pinene, myrcene, α-phellandrene and p-cymene as the main compounds. Sample A was tested for its antimicrobial activity against six Gram positive and negative bacteria. Results showed that the oil exhibited a significant antibacterial activity.
The aim of the present study was to determine the chemical composition, antibacterial and antibiofilm activities of the essential oil of sawdust from root burl wood of T. articulata. Nine strains including 8 clinical isolates from catheters-related infections and one ATCC 25923 were tested. Twenty-seven different compounds were identified by GC–MS in the essential oil of T. articulata extracted by hydrodistillation. Carvacrol and cedrol were the principal compounds representing 34.37 ± 0.07 and 11.07 ± 0.09 respectively. The EO had a strong antibacterial activity against all strains including one Multidrug-Resistant (MDR) and two Methicillin-Resistant S. aureus strains. Inhibition Zone Diameter (IZD) values ranged from 25 to 44 mm and the MIC values, determinated by microdilution method, ranged from 0.19 to 48 nL/mL. The EO had bactericidal effect and also exhibited at sub-lethal concentrations a very important inhibitory effect of biofilm formation of all strains.
Cutaneous leishmaniasis is an infectious disease caused by various species of the flagellate protozoan Leishmania. During the past 20 years, cutaneous leishmaniasis has emerged as a major public health threat in Morocco. The main objective of this study was to study the occurrence of Leishmania infection in vectors and to identify sand fly blood meal sources in an endemic locality of cutaneous leishmaniasis within Sefrou province, where the vectors of leishmaniasis were still unknown. 2650 sand flies were collected using CDC miniature light traps and identified morphologically. The identified sand flies were tested for Leishmania infection by nested PCR. The source of blood meal of 10 freshly engorged females: 6 Phlebotomus longicuspis and 4 Phlebotomus sergenti, was determined using the Cyt b sequence. The collected sand flies consisted of 10 species, seven of which belonged to the genus Phlebotomus and three to the genus Sergentomyia. The most abundant species was P. longicuspis, accounting for 72% of the total sand flies collected. In females of three P. longicuspis and four P. sergenti, Leishmania infantum and Leishmania tropica DNA was detected, respectively. The source of blood meal of engorged females showed that all sand flies tested fed on humans. We report for the first time the natural infection of P. longicuspis with L. infantum in Morocco. The high frequency of this species in this region, in addition to its anthropophilic character make P. longicuspis the putative vector of L. infantum in this cutaneous leishmaniasis focus where L. tropica is confirmed as the causative agent of the disease and P. sergenti as its vector. The presence of L. infantum, and its presumed vector in this area, makes this a site of high risk of visceral leishmaniasis, mostly because of the proximity of a focus of human and canine visceral leishmaniasis.
Background: Infections, which are caused by species of Bartonella produce a broad group of zoonosis with a worldwide distribution. In fact, Bartonella henselae is the main causal agent of cat scratch disease (CSD), and several other syndromes in humans. Furthermore, cats and dogs can be a source of many zoonotic diseases for human being. The aim of this study is to determine the prevalence of Bartonella henselae, Bartonella vinsonii subsp. Berkhoffii and Bartonella clarridgeiae in stray cats and dogs in Morocco, and assess the potential risk factors for feline and canine infections. Methods & Materials: As a matter of fact, blood samples of 130 cats and 158 dogs were collected from the West region of Morocco including Kenitra, Rabat, Temara, Casablanca, Settat, and Eljadida areas. Later on, DNA was extracted and tested by nested polymerase chain reaction (PCR), targeting a fragment of the intergenic transcribed sequence (ITS) with specific primers. Then, positive samples were confirmed by PCR using the FtsZ gene. Last but not least, the PCR products were sequenced to identify Bartonella species. Results: As a result, Bartonella henselae and B. clarridgeiae were detected in 30% (39/130) of stray cats. However, none of the dogs' samples were tested positive in the PCR assays. It is worth to note that female gender and exposure to fleas were statistically associated with the infection. Conclusion: After reviewing all scientific studies conducted in Morocco and related to the vector borne diseases field, it is confirmed that this is the first study of its kind in Morocco, which examines blood of stray dogs and cats using molecular techniques. What is more, we should highlight the importance of the feline and canine population as a source of zoonotic agents and potential infection risk to humans.
Abstract The chemical composition of the three essential oils obtained by hydrodistillation of the resin, leaves and fruits of Pistacia atlantica Desf. (Anacardiaceae) was studied by GC and GC/MS. Monoterpene hydrocarbons constituted the main chemical group in the resin oil, with α-pinene (42.9%) and β-pinene (13.2%) as the major components. Oil of the fruits contained high amounts of oxygenated monoterpenes, with bornyl acetate (21.5%) as the major component, while oxygenated monoterpenes and sesquiterpenes were found to predominate in the oil of leaves among which terpinen-4-ol (21.7%) and elemol (20.0%) were the most abundant components.
The purpose of this study was to evaluate the efficiency of Pseudomonas aeruginosa strain Dokkala (OK383444) isolate against cyst nematode Globodera pallida strain Dokkala (MZ959187) as a biocontrol agent on potato cyst nematode. The test was first conducted in vitro with bacterial suspensions at 105, 106, 107 and 108 CFU/mL against 100 eggs, 100 second-stage juveniles (J2), and 10 cysts of G. pallida and then in vivo on potato variety Desiree infested by cyst nematode in the greenhouse. Four plant growing parameters were evaluated in the treated potato plants by P. aeruginosa in the presence of G. pallida; plant height (cm), tuber weight (kg), wet and dry weight (kg) of the aerial part, and root length (cm). The application of P. aeruginosa in vitro reduced the rate of eggs of G. pallida by 42% and juveniles by 56%. However, the percentages of colonized females with bacteria were not significant (8% and 16% after 96 and 240 h, respectively), whereas normal J2 controls hatched at 100% after 48 h. Furthermore, the in vivo treatment showed an enhancement of 650 g in tuber weight and 19.2 cm in plant length compared to untreated G. Pallida infested plants and 33.34% colonized cysts. This research clearly indicates the ability of P. aeruginosa to reduce the density of potato cyst nematodes and has the potential for the biological control of G. pallida.