Publications by authors named "Chacra L"

Purpose: To compare haze and refractive outcomes in patients undergoing combined accelerated corneal cross-linking (A-CXL) and selective wavefront-guided transepithelial photorefractive keratectomy (WG-transPRK) without mitomycin C (MMC) versus those undergoing A-CXL.

Methods: This prospective study analyzed 95 eyes (86 patients) with progressive keratoconus from October 2018 to October 2022. The first group underwent CXL combined with corneal or ocular WG-transPRK (CXL+PRK, n = 52), targeting higher order aberrations (HOAs).

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  • Human lice, as specific ectoparasites of humans, transmit serious diseases like epidemic typhus, prompting the need for effective louse research methods.
  • The study developed a new rearing technique for Orlando (Or) body lice using artificial membranes, comparing two systems: the Hemotek feeding system and a Petri dish method.
  • Results showed that while blood anticoagulants influenced louse longevity and development, the Petri dish method with heparinized human blood allowed successful louse rearing, enabling further studies on pathogens and pesticides without compromising animal welfare.
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The strains Marseille-Q7072 (= CSUR Q7072 = CECT 30604) and Marseille-Q7826 (= CSUR Q7826 = CECT 30727) were isolated from vaginal samples. As MALDI-TOF mass spectrometry failed to identify them, their genomes were directly sequenced to determine their taxogenomic identities. Both strains are anaerobic without any oxidase and catalase activity.

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Bacterial vaginosis (BV) is a common dysbiosis of unclear etiology but with potential consequences representing a public health problem. The diagnostic strategies vary widely. The Amsel criteria and Nugent score have obvious limitations, while molecular biology techniques are expensive and not yet widespread.

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The composition of the vaginal microbiota is known to be influenced by various factors and to be associated with several disorders affecting women's health. Although metagenomics is currently a widely used method for studying the human microbiota, it has certain limitations, such as a lack of information on bacterial viability. It is therefore important to use culture-based methods such as culturomics.

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An isolate of a bacterium recovered from an endometrial biopsy failed to be identified by MALDI-TOF mass spectrometry and was subjected to 16S rRNA sequencing. The obtained sequence was compared by BLASTn against the NCBI database, which revealed that the most closely related species was Cellulomonas hominis and Cellulomonas pakistanensis, with 98.85% and 98.

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  • Sexually transmitted infections (STIs) are a significant global health issue, and while bacterial vaginosis (BV) isn't classified as an STI, it may heighten the risk of acquiring various STIs.
  • In a study with 290 women, those diagnosed with BV showed a higher prevalence of STIs (28%) compared to those without BV (20.4%); they also had more co-infections with multiple STI-causing microorganisms.
  • The findings suggest a potential link between BV and STIs, indicating more research is necessary to clarify this relationship and its implications for women's health.
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Purpose: To evaluate and compare functional and structural outcomes of accelerated corneal crosslinking (A-CXL) using riboflavin with hydroxypropyl methyl cellulose (HPMC) vs conventional corneal crosslinking (C-CXL) using riboflavin with dextran.

Setting: American University of Beirut Medical Center, Beirut, Lebanon.

Design: Retrospective analysis.

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  • * Research methods included both prospective and retrospective screening techniques, such as PCR, real-time PCR, and scanning electron microscopy, to analyze the prevalence of TM7 in different human samples.
  • * Findings revealed that TM7 were most common in oral samples, with lower prevalence in other bodily fluids, and even found in some infectious samples, highlighting their status as human commensals and suggesting the need for more research on their potential role in disease contexts.
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Strains Marseille-Q5893 (= CSUR Q5893 = CECT 30496) and Marseille-Q5883 (= CSUR Q5883 = CECT 30497) were isolated from vaginal samples using the culturomics approach. The 16S rRNA gene sequences of each strain were sequenced and then compared by BLASTn to the NCBI database. Strains Marseille-Q5893 and Marseille-Q5883 were most closely related to Anaerococcus obesiensis and Finegoldia magna, with identities of 98.

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  • * Genetic analysis showed that it has a 98.68% sequence identity with another strain, Ornithinibacillus scapharcae, and a G+C content of 36.9 mol%.
  • * Due to its unique genetic, morphological, and biochemical characteristics, this strain is proposed as a new species named Ornithinibacillus massiliensis sp. nov.
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The vaginal microbiome is a well-defined compartment of the human microbiome. It has unique conditions, characterized by the dominance of one bacterial species, the This microbiota manifests itself by a low degree of diversity and by a strong dynamic of change in its composition under the influence of various exogenous and endogenous factors. The increase in diversity may paradoxically be associated with dysbiosis, such as bacterial vaginosis (BV).

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Around the world, more than 175,000,000 women are diagnosed every year with gynaecological disease, in many cases contributing to high morbidity and mortality. For this reason, knowledge of the composition of the vaginal microbiome and its variations represents a real health challenge, as this is key to improving therapeutic management. This review traces the history of the poorly known vaginal microbiome and focuses on the latest findings concerning this ecosystem.

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Purpose: To evaluate and compare corneal haze as determined by optical coherence tomography (OCT) after corneal cross-linking (CXL) for the treatment of mild to moderate keratoconus with or without mitomycin C (MMC) application.

Methods: This was a retrospective analysis of 87 eyes of 72 patients with mild to moderate keratoconus. The first group (n = 44 eyes) underwent CXL between June 2013 and January 2015 and the second group (n = 43 eyes) underwent CXL with MMC (CXL+MMC) between February and December 2015, both following the Dresden protocol.

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Purpose: To introduce a customized ablation area photo-therapeutic keratectomy (PTK) technique that uses a preoperatively generated laser ablation profile to accurately match and ablate the area of the pathology.

Methods: A case of mid-peripheral Salzmann's nodular degeneration causing recurrent epithelial erosion is described. The white-to-white distance, on a slit-lamp image of the patient's eye, was measured by a Placido and dual-Scheimpflug analyzer and used as a scale on a Java-based image processing program to extrapolate the focal corneal pathology's vertical and horizontal dimensions on the corneal plane.

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Background: This study evaluates the role of frozen section (FS) in surgical decisions for nodular thyroid disease when a preoperative fine-needle aspiration cytology (FNAC) is available.

Material And Method: The charts of 113 patients who underwent thyroidectomy for nodular goiter were reviewed. Each patient underwent FNAC, FS, or both.

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