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Polyphenolic natural products as photosensitizers for antimicrobial photodynamic therapy: recent advances and future prospects.

Antimicrobial photodynamic therapy (aPDT) has become a potent contender in the fight against microbial infections, especially in the context of the rising antibiotic resistance crisis. Recently, there has been significant interest in polyphenolic natural products as potential photosensitizers (PSs) in aPDT, given their unique chemical structures and inherent antimicrobial properties. Polyphenolic natural products, abundant and readily obtainable from natural sources, are generally regarded as safe and highly compatible with the human body. This comprehensive review focuses on the latest develo

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… actinomycetemcomitans ( A. actinomycetemcomitans ) ( 42 ), methicillin-resistant S. aureus biofilm (2.03 log10 CFU/mL reductions) ( 24 ), and fungi such as Candida albicans ( C. albicans , 1 log reductions) and other stains of the Candida spp. ( 43 ) Table 1 for a detailed description of the application … Photodynamic therapy of Curcuma longa extract stimulated with blue light against Aggregatibacter actinomycetemcomitans. Photodiagnosis Photodyn Ther (2018) 22:101–5. doi: 10.1016/j.pdpdt.2018.03.001 43. …

Heterogeneity of host immunological risk factors in patients with aggressive periodontitis.

BACKGROUND: The pathogenesis of early-onset periodontitis (EOP) can be explained by various host risk factors. Previous studies have focused on a single (among many possible) immunological risk factor and the association among the factors has not been assessed. We comprehensively investigated the associations among multiple host immunological risk factors in EOP patients to further elucidate their role in the pathogenesis of EOP. METHODS: Sixty-eight EOP patients (50 generalized EOP, 18 localized EOP), 51 EOP-suspected patients (S-EOP), 43 adult periodontitis (AP) patients, and 36 periodontal

Effect of leaving chronic oral foci untreated on infectious complications during intensive chemotherapy.

BackgroundLeukaemic patients receiving intensive chemotherapy and patients undergoing autologous stem-cell transplantation (ASCT) are routinely screened for oral foci of infection to reduce infectious complications that could occur during therapy. In this prospective study we assessed the effect of leaving chronic oral foci of infection untreated on the development of infectious complications in intensively treated haematological patients.MethodsWe included and prospectively evaluated all intensively treated leukaemic patients and patients undergoing ASCT who were referred to our medical centr

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… Anaerobic cultivation was performed to determine the total periodontal bacterial load and presence and levels of Aggregatibacter actinomycetemcomitans , Porphyromonas gingivalis , Prevotella intermedia , Tannerella forsythia , Fusobacterium nucleatum , Parvimonas micra and Campylobacter rectus. …

Selective blockade of voltage-gated potassium channels reduces inflammatory bone resorption in experimental periodontal disease.

UNLABELLED: The effects of the potassium channel (Kv1.3) blocker kaliotoxin on T-cell-mediated periodontal bone resorption were examined in rats. Systemic administration of kaliotoxin abrogated the bone resorption in conjunction with decreased RANKL mRNA expression by T-cells in gingival tissue. This study suggests a plausible therapeutic approach for inflammatory bone resorption by targeting Kv1.3. INTRODUCTION: Kv1.3 is a critical potassium channel to counterbalance calcium influx at T-cell receptor activation. It is not known if Kv1.3 also regulates RANKL expression by antigen-activated T-

Methods of Topical Administration of Drugs and Biological Active Substances for Dental Implants-A Narrative Review.

Dental implants are, nowadays, established surgical devices for the restoration of lost teeth. Considered as an alternative for traditional prosthetic appliances, dental implants surpass them in reliability and patient feedback. Local drug delivery around the implants promotes osseointegration and reduces peri-implantitis. However, there are currently no methods of a multiple, precise topical administration of drugs to the implant area. Engineering coatings on the implants, drug application on carriers during implantation, or gingival pockets do not meet all requirements of dental surgeons. Th

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… Metronidazole can be effective against Aggregatibacter actinomycetemcomitans, Prevotella intermedia, Porphyromonas gingivalis, Tannerella forsythensis, Prevotella nigrescens, Streptococcus sanguinis, Parvimonas micra, and Eikenella corrodens. … After a 6-month study, a reduction in plaque deposition and bleeding as well as over a 90% reduction in anaerobic bacteria such as Aggregatibacter actinomycetemcomitans, Fusobacterium nucleatum, and Porphyromonas gingivalis in the gingival pockets around the implants was demonstrated [ 86 ]. …

Gut-Bone Axis: A Non-Negligible Contributor to Periodontitis.

Periodontitis is a polymicrobial infectious disease characterized by alveolar bone loss. Systemic diseases or local infections, such as diabetes, postmenopausal osteoporosis, obesity, and inflammatory bowel disease, promote the development and progression of periodontitis. Accumulating evidences have revealed the pivotal effects of gut microbiota on bone health via gut-alveolar-bone axis. Gut pathogens or metabolites may translocate to distant alveolar bone via circulation and regulate bone homeostasis. In addition, gut pathogens can induce aberrant gut immune responses and subsequent homing o

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… Additionally, Aggregatibacter actinomycetemcomitans –induced periodontitis mice show strong Th17 immune responses in periodontal lesions ( Monasterio et al., 2018 ). … Alveolar Bone Resorption and Th1/Th17-Associated Immune Response Triggered During Aggregatibacter Actinomycetemcomitans-Induced Experimental Periodontitis are Serotype-Dependent. J. Periodontol. 89 (10), 1249–1261. doi: 10.1002/JPER.17-0563 Morozumi A. (2011). …

Микробиота человека в области здравоохранения и отдельные раковые заболевания.

Большинство эпителиальных поверхностей нашего тела, пищеварительный тракт, дыхательные и врожденные системы, колонизируются большим количеством бактерий, археи, грибов, протозоанов и вирусов. Эти микробиота, особенно кишки, играют важную и полезную роль в пищеварении, метаболизме и синтезе витаминов. Их метаболиты стимулируют производство цитокина человеком, которое используется против потенциальных патогенов. На состав микробиоты влияет ряд внутренних и внешних факторов, включая питание, возраст, болезни и образ жизни. Такие изменения, называемые дисбиозом, могут быть связаны с развитием разл

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… Finally, bacteria such as Porphyromonas gingivalis , Prevotella intermedia , Aggregatibacter actinomycetemcomitans , and Fusobacterium nucleatum are known to produce various substances that may have carcinogenic properties, such as reactive oxygen species, reactive nitrogen species, organic acids …

Chronic periodontitis genome-wide association studies: gene-centric and gene set enrichment analyses.

Recent genome-wide association studies (GWAS) of chronic periodontitis (CP) offer rich data sources for the investigation of candidate genes, functional elements, and pathways. We used GWAS data of CP (n = 4,504) and periodontal pathogen colonization (n = 1,020) from a cohort of adult Americans of European descent participating in the Atherosclerosis Risk in Communities study and employed a MAGENTA approach (i.e., meta-analysis gene set enrichment of variant associations) to obtain gene-centric and gene set association results corrected for gene size, number of single-nucleotide polymorphisms,

Полиморфизм меланкортина - генезиалы с воспалением и болезнями.

Рецепторы Меланокортина (МКР) выполняют различные функции: от пигментации кожи, регулирования аппетита, реакции на стресс и когниции, синтеза стероидов и энергетического баланса до регенерации клеток и иммуномодуляции. Генетический полиморфизм с распределением тканей от мозга, лимбической системы и адренальной коры до нейтрофилов, моноцитов и макрофазов проявляется в MCR. Мутации в генах MC1R, MC2R, MC3R и MC4R связаны с риском меланомы, семейной глюкокортикоидной недостаточности, ожирения и типа 2 Диафиозный сахар, соответственно. Тем временем, MC1R, MC2R и MC5R связаны с риском серьезного де

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… Other than several types of arthritis, melanocortin agonists can play a role in preventing alveolar bone resorption in severe types of periodontitis caused by Aggregatibacter actinomycetemcomitans [ 146 ]. 8.11. …

Adiponectin signalling in bone homeostasis, with age and in disease.

Adiponectin is the most abundant circulating adipokine and is primarily involved in glucose metabolism and insulin resistance. Within the bone, osteoblasts and osteoclasts express the adiponectin receptors, however, there are conflicting reports on the effects of adiponectin on bone formation and turnover. Many studies have shown a pro-osteogenic role for adiponectin in in vivo murine models and in vitro: with increased osteoblast differentiation and activity, alongside lower levels of osteoclastogenesis. However, human studies often demonstrate an inverse relationship between adiponectin conc

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… Anti-inflammatory activity of a globular adiponectin function on RAW 264 cells stimulated by lipopolysaccharide from Aggregatibacter actinomycetemcomitans. FEMS Immunol. Med. Microbiol. 2009;56:241–247. doi: 10.1111/j.1574-695X.2009.00573.x. 91. Šenolt L, Pavelka K, Housa D, Haluzík M. …

Комплексное исследование двустороннего взаимодействия между микробиомами человека и злокачественными заболеваниями крови и гематологическими условиями: акцент на новых терапевтических стратегиях.

Микробиота человека играет ключевую роль в поддержании хомостаза, регулируя иммунную реакцию, метаболизм и гематопоисис. Микробиальный дисбиоз все чаще ассоциируется с иммунной дисфункцией, воспалением и аномалиями костного мозга, которые могут привести к гематологическим заболеваниям. В настоящем обзоре резюмируются текущие данные о роли микробиота в нормальном гематопоисе и ее потенциальной причастности к доброкачественным и злокачественным гематологическим расстройствам.МЕТОДЫ: Обзор описательной литературы был проведен на основе всестороннего поиска основных научных баз данных без временны

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… actinomycetemcomitans Staphylococcus aureus Actinobacteria Chronic Lymphoblastic Leukemia (CLL) | Bacteroides , Parabacteroides , Prevotella , Acinetobacter | Bacteroidetes phylum | Th17 activation and loss of butyrate producers → disease progression | Microbiome profiling | Causality unclear Firmicutes … Leukotoxin A (LtxA), produced by a type of oral microbiota called Aggregatibacter actinomycetemcomitans , is effective in preventing the development and progression of AML by reacting with lymphocyte function antigen‐1 (LFA‐1) present on the surface of susceptible leukocytes. …

Medication-Related Osteonecrosis: Why the Jawbone?

Medication-related osteonecrosis of the jaw (MRONJ) has emerged as a complication of anti-resorptive medications. Despite its low incidence rate, this problem has gained attention in recent years due to its devastating consequences and lack of preventive strategy. The fact that MRONJ incidence has been exclusive to the jawbones, despite the systemic effect of anti-resorptive medications, could be a starting point to unravel the multifactorial pathogenesis of this condition. This review aims to negotiate the question of why the jawbone is more susceptible to MRONJ than other skeletal sites. App

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… Several studies have linked MRONJ to Actinomyces, especially Aggregatibacter Actinomycetemcomitans, which are common in patients with periodontitis, again linking MRONJ to the underlying prevalence of these bacteria [ 27 , 96 , 102 ]. …

Роль микробиомы в множестве миелом: новые знания и терапевтические возможности.

Множественная миелома — гематологический рак, описываемый распространением плазменных клеток в костном мозге, что вызывает иммунную дисфункцию и другие аномалии. Микробиом кишечника, микробное сообщество в желудочно-кишечном тракте, было обнаружено, что он модифицирует системный иммунитет, воспаление и метаболизм. Хотя взаимосвязь между кишечным микробиомом и множеством миелома была обнаружена в недавних исследованиях, существует пробел в знаниях, связывающий воздействие микробиома на патогенез и лечение множественной миеломы. Несбалансированность в кишечном микробиоме, дисбиозе, может влиять

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… Similarly, a case–control study showed that a higher abundance of salivary Porphyromonas gingivalis and Aggregatibacter actinomycetemcomitans incurs the same association [ 62 ]. 4. …

The Bloody Crossroads: Interactions between Periodontitis and Hematologic Diseases.

Periodontitis is a common oral condition that can have a significant impact on the overall health of the body. In recent years, attention has been paid to potential relationships between periodontitis and various hematological disorders. This publication aims to present information available in the literature on this relationship, focusing on examples of red blood cell disorders (such as aplastic anemia and sickle cell anemia) and white blood cell disorders (such as cyclic neutropenia, maladaptive trained immunity, clonal hematopoiesis, leukemia, and multiple myeloma). Understanding these asso

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… The Gram-negative bacteria that cause periodontitis include Aggregatibacter actinomycetemcomitans , Porphyromonas gingivalis , Prevotella intermedia , and Tannerella forsythia . …

Molecular Mechanisms Leading from Periodontal Disease to Cancer.

Periodontitis is prevalent in half of the adult population and raises critical health concerns as it has been recently associated with an increased risk of cancer. While information about the topic remains somewhat scarce, a deeper understanding of the underlying mechanistic pathways promoting neoplasia in periodontitis patients is of fundamental importance. This manuscript presents the literature as well as a panel of tables and figures on the molecular mechanisms of Porphyromonas gingivalis and Fusobacterium nucleatum, two main oral pathogens in periodontitis pathology, involved in instigati

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… Fusobacterium spp., Prevotella intermedia / nigrescens , Porphyromonas gingivalis ( P. gingivalis ) and Aggregatibacter actinomycetemcomitans were described as the most prevalent subgingival pathogens found in patients with chronic periodontal disease that developed periodontal abscesses [ 7 , 8 ]. …

Pharmacomicrobiomics in precision cancer therapy: bench to bedside.

The burgeoning field of pharmacomicrobiomics offers promising insights into the intricate interplay between the microbiome and cancer, shaping responses to diverse treatment modalities. This review aims to analyze the molecular mechanisms underlying interactions between distinct microbiota types and cancer, as well as their influence on treatment outcomes. We explore how the microbiome impacts antitumor immunity, and response to chemotherapy, immunotherapy, and radiation therapy, unveiling its multifaceted roles in cancer progression and therapy resistance. Moreover, we discuss the challenges

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… . | The carriage of oral pathogens, specifically Porphyromonas gingivalis and Aggregatibacter actinomycetemcomitans , was linked to a higher risk of pancreatic cancer. | Inflammation: Microbiota-mediated inflammation | ( 43 ) SCC | SCC, AK patients, and healthy controls. | In SCC, the relative abundance …

Curcumin Formulations for Better Bioavailability: What We Learned from Clinical Trials Thus Far?

Curcumin has been credited with a wide spectrum of pharmacological properties for the prevention and treatment of several chronic diseases such as arthritis, autoimmune diseases, cancer, cardiovascular diseases, diabetes, hemoglobinopathies, hypertension, infectious diseases, inflammation, metabolic syndrome, neurological diseases, obesity, and skin diseases. However, due to its weak solubility and bioavailability, it has limited potential as an oral medication. Numerous factors including low water solubility, poor intestinal permeability, instability at alkaline pH, and fast metabolism contri

Advanced biomaterial-based approaches for medication-related osteonecrosis of the jaw.

Medication-related osteonecrosis of the jaw (MRONJ) is a debilitating adverse effect linked to anti-resorptive and anti-angiogenic therapies, with an incidence of 4.34 % (6.22 % in oncology patients and 0.59 % in osteoporosis patients) based on a pooled analysis of 92 observational studies (2015-2020), characterized by persistent bone exposure and poor healing. Conventional treatment modalities often yield suboptimal outcomes, with recurrence and procedural morbidity. In recent years, biomaterial-based strategies have emerged as promising alternatives by targeting MRONJ's complex pathophysiolo

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… Notably, the adhesion of Streptococcus mutans to necrotic bone, along with the detection of Aggregatibacter actinomycetemcomitans and Porphyromonas gingivalis in necrotic tissue, supports a significant microbial component in MRONJ pathophysiology [ 89 ]. …

A Systematic Review of Laser Photobiomodulation Dosimetry and Treatment Protocols in the Management of Medications-Related Osteonecrosis of the Jaws: A Rationalised Consensus for Future Randomised Controlled Clinical Trials.

Medication-related osteonecrosis of the jaw (MRONJ) is a debilitating adverse effect of bisphosphates, antiresorptive therapy or antiangiogenic agents that can potentially increase oxidative stress, leading to progressive osteonecrosis of the jaws. Despite the large number of published systematic reviews, there is a lack of potential MRONJ treatment protocols utilising photobiomodulation (PBM) as a single or adjunct therapy for preventive or therapeutic oncology or non-oncology cohort. Hence, this systematic review aimed to evaluate PBM laser efficacy and its dosimetry as a monotherapy or comb

Экстракорпоральное обнаружение биомаркеров и патогенов в слюне: всеобъемлющий, панорамный обзор.

Человеческая слюна представляет собой разнородную жидкость с сложным составом, которая содержит антитела, белки и вирусы, что делает ее применимой в клинической диагностике. Анализ проб слюны имеет несколько преимуществ по сравнению с другими биофильтрами, включая неинвазивную и простую процедуру сбора для эксторального обнаружения. Диагностика биомаркеров или патогенов в слюне может осуществляться различными методами: масс-спектрометрией, ПЦР, ЭЛИСА, электрохимическими и оптическими методами, такими, как флуоресцентная, SPR и SERS. Раннее обнаружение раковых и других биомаркеров заболеваний,