Publications by authors named "Guelguen K"

Introduction: To evaluate the enamel abrasion effects of soft, ultra-soft, and nano-bristle toothbrushes using atomic force microscopy (AFM) to guide toothbrush selection for optimal enamel preservation.

Methods: This in vitro study involved 45 extracted human teeth (central and lateral incisors), randomly assigned to three groups (n=15 each): Group I (nano-bristle), Group II (ultra-soft bristle), and Group III (soft bristle). Each specimen underwent 10,000 brushing cycles with a standardized 2 N force to simulate one year of brushing.

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Phaeohyphomycotic cyst is a common subcutaneous form of phaeohyphomycosis in which patients can present with subcutaneous plaques, nodules, etc., It is an infrequent presentation and is most reported in immunocompromised individuals. Diagnosis is confirmed by histopathological and mycological demonstration of the organism.

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Aim: This randomized controlled trial aimed to evaluate the impact of different incision types (oblique, vertical, and horizontal) for hamstring graft harvest on sensory disturbances and functional outcomes after anterior cruciate ligament (ACL) reconstruction.

Methods: A total of 118 patients were randomized into three groups: oblique incision (n = 40), vertical incision (n = 40), and horizontal incision (n = 38). Sensory deficits were assessed using Von Frey Filaments at three weeks, three months, and six months postoperatively.

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Understanding human behavior and human action recognition are both essential components of effective surveillance video analysis for the purpose of guaranteeing public safety. However, existing approaches such as three-dimensional convolutional neural networks (3D CNN) and two-stream neural networks (2SNN) have computational hurdles due to the significant parameterization they require. In this paper, we offer HARNet, a specialized lightweight residual 3D CNN that is built on directed acyclic graphs and was created expressly to handle these issues and achieve effective human action detection.

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Endophytes from medicinal plants are potential biocontrol agents against Fusarium oxysporum f. sp. cubense (Foc), which is the causative fungus of banana wilt disease.

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This study proposes and analyses a revised predator-prey model that accounts for a twofold Allee impact on the rate of prey population expansion. Employing the Caputo fractional-order derivative, we account for memory impact on the suggested model. We proceed to examine the significant mathematical aspects of the suggested model, including the uniqueness, non-negativity, boundedness, and existence of solutions to the noninteger order system.

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Human breath gas analysis is a noninvasive disease diagnostic approach used to identify different pathological conditions in the human body. Monitoring breath acetone (CHO) and ammonia (NH) as biomarkers is vital in diagnosing diabetes mellitus and liver disorders, respectively. In this article, the quartz-enhanced photoacoustic spectroscopy (QEPAS) technique is proposed and demonstrated for measuring CHO and NH in human exhaled breath samples.

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Triphala is a traditional Ayurvedic herbal formulation composed of three fruits: amla (Phyllanthus emblica), bibhitaki (Terminalia bellerica), and haritaki (Terminalia chebula). Triphala is a potent Ayurvedic remedy that promotes digestion, detoxification, and overall wellness, while also providing antioxidant benefits through its trio of nutrient-rich fruits. In order to elucidate the individual contributions of the three ingredients of Triphala from molecular perspective, the individual ingredients were used for the untargeted LCMS/MS analysis.

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Since the pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) was first reported from Wuhan, China, there has been a surge in scientific research to find a permanent cure for the disease. The main challenge in effective drug discovery is the continuously mutating nature of the SARS-CoV-2 virus. Thus, we have used the I-TASSER modeling to predict the structure of the SARS-CoV-2 viral envelope protein followed by combinatorial computational assessment to predict its putative potential small molecule inhibitors.

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Sodium salt of aryl sulfinic acid reacts with enynone in a different manner, yielding α-furyl sulfone and stereodefined vinyl sulfone in toluene and EtOH respectively in the presence of ZnCl. The salient features of this protocol include chemoselectivity, broad substrate scope, high efficiency, high yield, and easy purification. The synthetic utilities of the products are demonstrated by cycloaddition and cis-trans photoisomerization reactions.

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The development of photoswitches that absorb low energy light is of notable interest due to the growing demand for smart materials and therapeutics necessitating benign stimuli. Donor-acceptor Stenhouse adducts (DASAs) are molecular photoswitches that respond to light in the visible to near-infrared spectrum. As a result of their modular assembly, DASAs can be modified at the donor, acceptor, triene, and backbone heteroatom molecular compartments for the tuning of optical and photoswitching properties.

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Antimicrobial therapy is becoming less effective because of the rising microbial resistance. Surgical site infections (SSI) are one of the major complications that require modifications in the infection control policy for effective management. To develop a model for predicting the readmission rates post-SSI treatment and to identify prevalent microbial isolates and the respective trends in resistance patterns.

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Background: Puberty menorrhagia, characterized by prolonged and excessive menstrual bleeding between menarche and 19 years of age, presents clinical challenges at adolescents and it is attributed to an immature hypothalamo-pituitary-ovarian axis, leading to sustained high estrogen levels and anovulation. This case report explores the efficacy of acupuncture as an adjunctive therapy for pubertal menorrhagia of a 16-year-old female with a history of irregular menstrual cycles and excessive bleeding for 41 days.

Methodology: Based on Traditional Chinese Medicine (TCM) tongue and pulse diagnostics of the patient, acupuncture needling at SP4 (Gongsun), PC 6 (Neiguan), KI 14 (Siman), SP 10 (Xuehai), LR 1 (Dadun), CV 6 (Qihai) was given once in a day for a month, each session lasting 20 min targeting to alleviate Liver blood stasis.

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Aim: To evaluate the effectiveness of cartoon animated video, caregiver-supervised training, and pamphlet-based oral health education on plaque control, oral hygiene status, and oral health knowledge, attitude, and practice (KAP) among orphaned adolescents with plaque-induced gingivitis.

Methods: A total of ninety adolescents were randomly selected and allocated into three different groups. Group A received the pamphlet (n = 30), Group B received the cartoon animated video (n = 30), and Group C received the caregiver-supervised training (n = 30).

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An acoustic propagation experiment was conducted in the western continental shelf of India (off Kollam, Kerala) in water depth of ∼71 m with seafloor consisting of hard sandy sediments. The multipath arrival times are obtained from peaks in acoustic impulse response measurements made on a single hydrophone for two source-receiver ranges of 245 m and 320 m. The arrival times are used for inverting the water column sound speed profile (SSP) utilizing the empirical orthogonal functions (EOFs), which can completely describe large datasets.

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Background: Periodontal disease is a major contributing factor to tooth loss and can significantly impact overall health. Traditional periodontal therapy typically involves mechanical debridement to remove plaque and calculus, along with the use of antimicrobial agents to reduce bacterial load. Licorice () has a long history of use in traditional medicine for treating various ailments since it contains glycyrrhizin, glabridin, liquiritin, and flavonoids, which possess anti-inflammatory, antioxidant, and antimicrobial activities.

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Dr. S. Padmavathi Iyer is a distinguished cardiologist recognized for her expertise in cardiovascular medicine.

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Article Synopsis
  • Necrotizing fasciitis (NF) is a serious infection that needs quick diagnosis and treatment; the LRINEC score helps assess patient risk levels early on.
  • A study in Chennai involving 112 NF patients found that 51.8% were at low risk, with significant links between higher LRINEC scores and worsening lab results, diabetes, and vascular disease.
  • With proper treatment, 83.9% of patients improved with conservative methods, while complications like delayed healing occurred in some cases, highlighting the importance of the LRINEC score in clinical decision-making.
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The Model Reference Adaptive System (MRAS) is effective for speed control in sensorless Induction Motor (IM) drives, particularly at zero and very low speeds. This study enhances MRAS's resilience and dynamic performance by integrating an Adaptive Neuro-Fuzzy Inference System (ANFIS) controller into sensorless vector-controlled IM drives. The research addresses challenges related to parameter uncertainties, load variations, and external disturbances through the combination of MRAS and ANFIS.

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Mucolipidosis type IV (MLIV) is classified as an exceptionally autosomal recessive condition due to a change in MCOLN1 that encodes the mucolipin-1 protein. ML-1 is a membrane protein comprising 6 Trans regions, which are situated at the LELs, a serine lipase area, and a nuclear localization sign. The characteristic features of the ML4 patients are mental retardation and skeletal deformities due to an increase in lipid molecules in the brain, other tissues, and organs.

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Article Synopsis
  • The phosphatidylinositol-3 kinase (PI3K) pathway is crucial in various cancers, making it an attractive target for cancer therapies due to its role in cell survival and metastasis.
  • Mutations or overexpression in PI3K genes (PIK3CA, PIK3CB, PIK3CD, PIK3CG) lead to treatment failures, prompting ongoing clinical trials of PI3K inhibitors to combat drug resistance.
  • Many PI3K inhibitors have faced withdrawal due to safety concerns, but research continues on promising compounds with unique scaffolds to improve therapy efficacy and safety.
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The 'close proximity' configuration was used for field emission analysis of graphene-incorporated aluminum (Al) composites. The turn-on field was found to be 2 V μm for the AlGr1 (1% graphene (by weight) inside the Al matrix) composite compared to 4.75 V μm for the pristine aluminum sample.

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Levodopa (LD), a precursor to dopamine, is commonly used to treat Parkinson's disease. However, its oral formulations suffer from low bioavailability, toxicity, and untargeted delivery. This study aimed to develop a nature-based hydrogel for sustained LD release, addressing these limitations.

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Article Synopsis
  • The study examines the clinical and surgical management of aneurysmal bone cysts (ABCs) in the temporal bone, analyzing six case studies treated between 2017 and 2024 at a tertiary care institution.
  • Key findings indicate that the average patient age was 27.5 years, with symptoms like scalp swelling and hearing impairment, and successful surgeries resulted in no recurrences during a follow-up period.
  • The research concludes that complete surgical removal is the best treatment for temporal bone ABCs, stressing the importance of the tumor's stage and the extent of resection in determining patient outcomes.
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