scholarly journals Fungal-Bacterial Interactions in Health and Disease

Pathogens ◽  
2019 ◽  
Vol 8 (2) ◽  
pp. 70 ◽  
Author(s):  
Wibke Krüger ◽  
Sarah Vielreicher ◽  
Mario Kapitan ◽  
Ilse Jacobsen ◽  
Maria Niemiec
Keyword(s):  
Oral Cavity ◽  
Human Body ◽  
Host Response ◽  
Current Knowledge ◽  
Present Review ◽  
Wound Infections ◽  
Bacterial Interactions ◽  
Human Host ◽  
Host Health ◽  
Health And Disease

Fungi and bacteria encounter each other in various niches of the human body. There, they interact directly with one another or indirectly via the host response. In both cases, interactions can affect host health and disease. In the present review, we summarized current knowledge on fungal-bacterial interactions during their commensal and pathogenic lifestyle. We focus on distinct mucosal niches: the oral cavity, lung, gut, and vagina. In addition, we describe interactions during bloodstream and wound infections and the possible consequences for the human host.

scholarly journals Signalling Molecules in the Urothelium

2014 ◽  
Vol 2014 ◽  
pp. 1-14 ◽  
Author(s):  
Michael Winder ◽  
Gunnar Tobin ◽  
Daša Zupančič ◽  
Rok Romih
Keyword(s):  
Nitric Oxide ◽  
Urinary Bladder ◽  
Major Part ◽  
Current Knowledge ◽  
The Body ◽  
Present Review ◽  
Signalling Molecules ◽  
Ability To Act ◽  
Different Types ◽  
Health And Disease

The urothelium was long considered to be a silent barrier protecting the body from the toxic effects of urine. However, today a number of dynamic abilities of the urothelium are well recognized, including its ability to act as a sensor of the intravesical environment. During recent years several pathways of these urothelial abilities have been proposed and a major part of these pathways includes release of signalling molecules. It is now evident that the urothelium represents only one part of the sensory web. Urinary bladder signalling is finely tuned machinery of signalling molecules, acting in autocrine and paracrine manner, and their receptors are specifically distributed among different types of cells in the urinary bladder. In the present review the current knowledge of the formation, release, and signalling effects of urothelial acetylcholine, ATP, adenosine, and nitric oxide in health and disease is discussed.

scholarly journals Oral Microbiota and Cancer Development

Pathobiology ◽  
2020 ◽  
pp. 1-11 ◽  
Author(s):  
Heidi Tuominen ◽  
Jaana Rautava
Keyword(s):  
Oral Cavity ◽  
Human Body ◽  
Current Knowledge ◽  
Fusobacterium Nucleatum ◽  
Cancer Development ◽  
Oral Microbiota ◽  
Carcinogenic Potential ◽  
Potentially Malignant ◽  
Activate Cell ◽  
The Impact

Oral microbiota are among the most diverse in the human body. More than 700 species have been identified in the mouth, and new sequencing methods are allowing us to discover even more species. The anatomy of the oral cavity is different from that of other body sites. The oral cavity has mucosal surfaces (the tongue, the buccal mucosa, the gingiva, and the palate), hard tissues (the teeth), and exocrine gland tissue (major and minor salivary glands), all of which present unique features for microbiota composition. The connection between oral microbiota and diseases of the human body has been under intensive research in the past years. Furthermore, oral microbiota have been associated with cancer development. Patients suffering from periodontitis, a common advanced gingival disease caused by bacterial dysbiosis, have a 2–5 times higher risk of acquiring any cancer compared to healthy individuals. Some oral taxa, especially <i>Porphyromonas gingivalis</i> and <i>Fusobacterium nucleatum</i>, have been shown to have carcinogenic potential by several different mechanisms. They can inhibit apoptosis, activate cell proliferation, promote cellular invasion, induce chronic inflammation, and directly produce carcinogens. These microbiota changes can already be seen with potentially malignant lesions of the oral cavity. The causal relationship between microbiota and cancer is complex. It is difficult to accurately study the impact of specific bacteria on carcinoma development in humans. This review focuses on the elucidating the interactions between oral cavity bacterial microbiota and cancer. We gather literature on the current knowledge of the bacterial contribution to cancer development and the mechanisms behind it.

scholarly journals Phage Prevalence in the Human Urinary Tract—Current Knowledge and Therapeutic Implications

2020 ◽  
Vol 8 (11) ◽  
pp. 1802
Author(s):  
Maciej Żaczek ◽  
Beata Weber-Dąbrowska ◽  
Ryszard Międzybrodzki ◽  
Andrzej Górski
Keyword(s):  
Community Structure ◽  
Urinary Tract ◽  
Human Body ◽  
Bacterial Infections ◽  
Current Knowledge ◽  
Bacterial Metabolism ◽  
Therapeutic Implications ◽  
Health And Disease ◽  
Tract Infections

Recent metagenomic analyses imply an immense abundance of phages in the human body. Samples collected from different sites (lungs, skin, oral cavity, intestines, ascitic fluid, and urine) reveal a generally greater number of phage particles than that of eukaryotic viruses. The presence of phages in those tissues and fluids reflects the paths they must overcome in the human body, but may also relate to the health statuses of individuals. Besides shaping bacterial metabolism and community structure, the role of phages circulating in body fluids has not been fully understood yet. The lack of relevant reports is especially visible with regard to the human urobiome. Certainly, phage presence and the role they have to fulfill in the human urinary tract raises questions on potential therapeutic connotations. Urinary tract infections (UTIs) are among the most common bacterial infections in humans and their treatment poses a difficult therapeutic dilemma. Despite effective antibiotic therapy, these infections tend to recur. In this review, we summarized the recent data on phage presence in the human urinary tract and its possible implications for health and disease.

scholarly journals Micronuclei (MN), an Important Cancer Biomarker

2019 ◽  
pp. 37-42
Author(s):  
Aniket Adhikari
Keyword(s):  
Oral Cavity ◽  
Cancer Patients ◽  
Smokeless Tobacco ◽  
Human Body ◽  
Cancer Biomarker ◽  
Nuclear Bodies ◽  
Present Review ◽  
Sensitive Indicator ◽  
Genetic Mutations ◽  
Genetic Damage

Micronuclei (MN) formation has been observed (cancer and pre-cancerous lesions) of the oral cavity among betel quid chewers. Micronuclei act as a cancer biomarker which is related with smokeless tobacco associated genetic mutations. Micronuclei are a sensitive indicator of genetic damage. These are small, extra nuclear bodies that are formed during mitosis from lagging chromosomes. The test is used as a tool for genotoxicity and easily detectable without affecting the cancer patients. The present review focuses on the various types of cancer of the human body with micronuclei study.

scholarly journals Human Microbiota Network: Unveiling Potential Crosstalk between the Different Microbiota Ecosystems and Their Role in Health and Disease

Nutrients ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 2905
Author(s):  
Jose E. Martínez ◽  
Augusto Vargas ◽  
Tania Pérez-Sánchez ◽  
Ignacio J. Encío ◽  
Miriam Cabello-Olmo ◽  
...  
Keyword(s):  
Human Body ◽  
Well Being ◽  
Body Region ◽  
Microbial Cells ◽  
Future Studies ◽  
Human Microbiota ◽  
Host Health ◽  
Number Of Microorganisms ◽  
Health And Disease ◽  
The Relationship

The human body is host to a large number of microorganisms which conform the human microbiota, that is known to play an important role in health and disease. Although most of the microorganisms that coexist with us are located in the gut, microbial cells present in other locations (like skin, respiratory tract, genitourinary tract, and the vaginal zone in women) also play a significant role regulating host health. The fact that there are different kinds of microbiota in different body areas does not mean they are independent. It is plausible that connection exist, and different studies have shown that the microbiota present in different zones of the human body has the capability of communicating through secondary metabolites. In this sense, dysbiosis in one body compartment may negatively affect distal areas and contribute to the development of diseases. Accordingly, it could be hypothesized that the whole set of microbial cells that inhabit the human body form a system, and the dialogue between the different host microbiotas may be a contributing factor for the susceptibility to developing diseased states. For this reason, the present review aims to integrate the available literature on the relationship between the different human microbiotas and understand how changes in the microbiota in one body region can influence other microbiota communities in a bidirectional process. The findings suggest that the different microbiotas may act in a coordinated way to decisively influence human well-being. This new integrative paradigm opens new insights in the microbiota field of research and its relationship with human health that should be taken into account in future studies.

Neuroligin-2 as a central organizer of inhibitory synapses in health and disease

2020 ◽  
Vol 13 (663) ◽  
pp. eabd8379
Author(s):  
Heba Ali ◽  
Lena Marth ◽  
Dilja Krueger-Burg
Keyword(s):  
Synaptic Transmission ◽  
Synapse Formation ◽  
Current Knowledge ◽  
Protein Complexes ◽  
Inhibitory Synapses ◽  
Molecular Architecture ◽  
Cellular Functions ◽  
Altered Expression ◽  
Health And Disease ◽  
Flow Of Information

Postsynaptic organizational protein complexes play central roles both in orchestrating synapse formation and in defining the functional properties of synaptic transmission that together shape the flow of information through neuronal networks. A key component of these organizational protein complexes is the family of synaptic adhesion proteins called neuroligins. Neuroligins form transsynaptic bridges with presynaptic neurexins to regulate various aspects of excitatory and inhibitory synaptic transmission. Neuroligin-2 (NLGN2) is the only member that acts exclusively at GABAergic inhibitory synapses. Altered expression and mutations in NLGN2 and several of its interacting partners are linked to cognitive and psychiatric disorders, including schizophrenia, autism, and anxiety. Research on NLGN2 has fundamentally shaped our understanding of the molecular architecture of inhibitory synapses. Here, we discuss the current knowledge on the molecular and cellular functions of mammalian NLGN2 and its role in the neuronal circuitry that regulates behavior in rodents and humans.

scholarly journals Targeting the Renin–Angiotensin–Aldosterone System to Prevent Hypertension and Kidney Disease of Developmental Origins

2021 ◽  
Vol 22 (5) ◽  
pp. 2298
Author(s):  
Chien-Ning Hsu ◽  
You-Lin Tain
Keyword(s):  
Kidney Disease ◽  
Current Knowledge ◽  
Current Evidence ◽  
Developmental Origins ◽  
Renin Angiotensin Aldosterone System ◽  
Renin Angiotensin ◽  
Health And Disease ◽  
Nitric Oxide Deficiency ◽  
Developing Kidney ◽  
Prevention Of Hypertension

The renin-angiotensin-aldosterone system (RAAS) is implicated in hypertension and kidney disease. The developing kidney can be programmed by various early-life insults by so-called renal programming, resulting in hypertension and kidney disease in adulthood. This theory is known as developmental origins of health and disease (DOHaD). Conversely, early RAAS-based interventions could reverse program processes to prevent a disease from occurring by so-called reprogramming. In the current review, we mainly summarize (1) the current knowledge on the RAAS implicated in renal programming; (2) current evidence supporting the connections between the aberrant RAAS and other mechanisms behind renal programming, such as oxidative stress, nitric oxide deficiency, epigenetic regulation, and gut microbiota dysbiosis; and (3) an overview of how RAAS-based reprogramming interventions may prevent hypertension and kidney disease of developmental origins. To accelerate the transition of RAAS-based interventions for prevention of hypertension and kidney disease, an extended comprehension of the RAAS implicated in renal programming is needed, as well as a greater focus on further clinical translation.

scholarly journals Stress-Related Dysfunction of Adult Hippocampal Neurogenesis—An Attempt for Understanding Resilience?

2021 ◽  
Vol 22 (14) ◽  
pp. 7339
Author(s):  
Julia Leschik ◽  
Beat Lutz ◽  
Antonietta Gentile
Keyword(s):  
Major Depression ◽  
Adult Neurogenesis ◽  
Current Knowledge ◽  
Functional Relation ◽  
Hippocampal Neurogenesis ◽  
Adult Hippocampal Neurogenesis ◽  
Special Focus ◽  
Extrinsic Cues ◽  
Health And Disease ◽  
Newborn Neurons

Newborn neurons in the adult hippocampus are regulated by many intrinsic and extrinsic cues. It is well accepted that elevated glucocorticoid levels lead to downregulation of adult neurogenesis, which this review discusses as one reason why psychiatric diseases, such as major depression, develop after long-term stress exposure. In reverse, adult neurogenesis has been suggested to protect against stress-induced major depression, and hence, could serve as a resilience mechanism. In this review, we will summarize current knowledge about the functional relation of adult neurogenesis and stress in health and disease. A special focus will lie on the mechanisms underlying the cascades of events from prolonged high glucocorticoid concentrations to reduced numbers of newborn neurons. In addition to neurotransmitter and neurotrophic factor dysregulation, these mechanisms include immunomodulatory pathways, as well as microbiota changes influencing the gut-brain axis. Finally, we discuss recent findings delineating the role of adult neurogenesis in stress resilience.

scholarly journals A Crosstalk between Diet, Microbiome and microRNA in Epigenetic Regulation of Colorectal Cancer

Nutrients ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 2428
Author(s):  
Małgorzata Guz ◽  
Witold Jeleniewicz ◽  
Anna Malm ◽  
Izabela Korona-Glowniak
Keyword(s):  
Colorectal Cancer ◽  
Gastrointestinal Tract ◽  
Gut Microbiota ◽  
Intestinal Microbiota ◽  
Current Knowledge ◽  
Vital Role ◽  
Disease States ◽  
Health And Disease ◽  
Dietary Components ◽  
Non Coding Rnas

A still growing interest between human nutrition in relation to health and disease states can be observed. Dietary components shape the composition of microbiota colonizing our gastrointestinal tract which play a vital role in maintaining human health. There is a strong evidence that diet, gut microbiota and their metabolites significantly influence our epigenome, particularly through the modulation of microRNAs. These group of small non-coding RNAs maintain cellular homeostasis, however any changes leading to impaired expression of miRNAs contribute to the development of different pathologies, including neoplastic diseases. Imbalance of intestinal microbiota due to diet is primary associated with the development of colorectal cancer as well as other types of cancers. In the present work we summarize current knowledge with particular emphasis on diet-microbiota-miRNAs axis and its relation to the development of colorectal cancer.

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