Microbial Flora And Microbial Pathogenicity Essay

Microbial Flora And Microbial Pathogenicity Essay

Length: 1489 words (4.3 double-spaced pages)

Rating: Strong Essays

Open Document

Essay Preview

Microbial flora & Microbial pathogenicity

Microorganisms are crucial to the normal function and maintenance of the human body. Without said microorganisms, humans would not be able to live as they do now. They are involved in numerous vital processes which occur throughout a human being 's lifetime such as food metabolism, growth, the body 's immune response against some infectious agents and many others. The population of microorganisms that are present within and around a human being are present from birth, is unstable and is in a condition of continuous change which depends on a multitude of aspects such as age, food consumed and personal hygiene. The health of the individual also plays a key role in influencing which microorganisms are present in greater or lesser number. (1)As stated in Murray’s Medical Microbiology, exposure of an individual to an organism may lead to one out of three likely outcomes. The organism can (1) transiently colonize the person, (2) permanently colonize the person, or (3) produce disease. This means that among the microorganisms that are present, there are those that will cause harm to its host and those which do not. Those that do cause deterioration to its host are called pathogenic microorganisms. On the other hand, those that do not are called commensal microorganisms. Microorganisms live on and in humans in immense numbers of about 10:1. Those which are usually found and do not cause harm to a healthy human host, are considered to be part of the natural flora of said host. Among the microorganism present are bacteria, archaea and fungi, as well as some micro-animals. Bacteria are commonly found to inhabit the skin and mucosal surfaces on several parts of the body. Most bacteria are present in...

... middle of paper ...

...ophores. Siderophores are substances which help the bacteria obtain iron from its host. Siderophores have a higher affinity for iron than lactoferrin or transferrin. So much so, that it can even steal iron which are already bound to lactoferrin or transferrin. The bacteria will then have receptors for siderophores which are carrying iron on its surface. The bacteria will then be able to get the iron that it needs to multiply. Salmonella and Escherichia species have been known to produce siderophores. Siderophores are considered to be an extremely important virulence mechanism in many pathogenic bacteria.

1.Murray, Patrick R., PhD. Murray: Medical Microbiology, Seventh ed. : Saunders, an imprint of Elsevier Inc.; 2013.

2. Wikipediaorg. 1. Wikipediaorg. [Online]. Available from: https://en.wikipedia.org/wiki/Human_microbiota [Accessed 8 October 2015].

Need Writing Help?

Get feedback on grammar, clarity, concision and logic instantly.

Check your paper »

Microbes And Its Effects On Humans Essay

- In this world, there are very tiny creatures that millions of them can fit into the eye of a needle. It is known as microbes, which cannot be seen with naked eyes. They are believed to be the oldest form of life on earth as microbe fossils age more than 3.5 billion years back when the boiled ocean covered the earth and it was before the dinosaurs roaming the planet. [5] We couldn’t breathe or eat without microbes but they would probably be just fine without us. Microbes can be found everywhere. There are more of them in a person’s mouth than the number of people in the entire planet....   [tags: Bacteria, Microbiology, Human flora, Pathogen]

Strong Essays
1400 words (4 pages)

Flora Assessment: Agathis Macrophylla Essay

- Flora Assessment: The proposed Kauri Reserve displays a species richness of over 70% of the total flora of Vanuatu. For a complete list of the observed species see Appendix A. The Forest in the Kauri Reserve is composed of three main vegetation types: Maquis forest, Mixed lowland forest, and Agathis/Calophyllum forest. The Maquis Forest is a dry subtropical woodland on the western side of the reserve with a canopy reaching up to 6 meters in height. The mixed lowland rain forest are rather heterogeneous in composition and structure - less rich in species than the Agathis forests....   [tags: flora, africultural subsistence, communities]

Strong Essays
1281 words (3.7 pages)

Description of the Concept of the Microbial Loop Essay

- The concept of the microbial loop first began in 1926 by Vernadskii, who studied heterotrophic and phototrophic microbial metabolism; and understood that these systems represented a major part of total metabolism in the oceans (Pomeroy, 1988). Older techniques that scientists used for enumerating marine bacteria were by plate counts, serial dilutions and phase-contrast microscopy. These numbers represented about 10% of actual numbers and are no longer used (Azam et al, 1983). Scientists were unable to completely understand the microbial loop until recently when ultrafiltration techniques, applied electronic microscope techniques; and genomic techniques were developed to quantify biomass in...   [tags: marine bacteria, oceans, microbial loop]

Strong Essays
2501 words (7.1 pages)

Essay on The Variation Of Microbial Growth

- The thought behind this series of experiments was to test a meat with many different forms that one encounters on a regular basis. The idea for turkey was chosen because it takes so many different forms it would be interesting to see the variation in microbial growth in the different conditions. Both experiments showed that although many think that raw meat would contain the most microbes, it’s actually deli meat that had more microbes than any other sample studied. The results that non-natural yielded more microbes than the organic turkey samples wasn’t as surprising, although some think that because organic meats are dipped in so many different concentrations to inhibit the growth of micro...   [tags: Bacteria, Microbiology, DNA, Bacillus]

Strong Essays
1084 words (3.1 pages)

African Dust and Microbial Pathogens Essay example

- ... was isolated from dust and non-dust events. To compare A. sydowii and other fungal pathogens, 18s rRNA DNA comparisons were made for relationship determination. Results showed, that air filters exposed to dust storms collected more microbial components than filters exposed to non-dust storms. Interestingly, Aspergillus spp., Bispora spp. and Candida spps were collected in the non-dust storm sample. Aspergillus spp. collected from the dust storm event was used for studies of sea fan inoculation....   [tags: pathogenic disease outbreaks]

Strong Essays
1684 words (4.8 pages)

Differences Between Flora and Mother Essay example

- There is an infinite number of personalities and the best art works portray them vividly and truthfully. Some people are practical, while others are more abstract. In the comedic novels about family life, Cold Comfort Farm by Stella Gibbons (1932) and Chicken Every Sunday: My Life with Mother's Boarders by Rosemary Taylor (1943), the practical characters are in the forefront. While representing different life phases due to their age difference, Gibbons's main character Flora Poste is quite similar in her life views and actions to Taylor's Mother....   [tags: Literary Analysis]

Strong Essays
2250 words (6.4 pages)

Essay Sybil by Flora Rheta Schreiber

- In the book Sybil, written by Flora Rheta Schreiber discuss the life story of Sybil Isabel Dorsett, who has developed 16 distinct personalities because of her childhood abuse. Sybil story became one of the most severe cases ever recorded with multiple personalities. Which is currently called Dissociative Identity Disorder in the current DSM-V. “Dissociative Identity Disorder (DID) is a severe condition in which two or more distinct identities, or personality states, are present in—and alternately take control of—an individual....   [tags: childhood abuse, multiple personality disorder]

Strong Essays
1593 words (4.6 pages)

Microbial Health of the Rhizosphere Essay

- Microbial Health of the Rhizosphere Works Cited Missing The importance of the interactions between microorganisms, plants and the rhizosphere was realized as early as 1904 by Soil Bacteriologist and Professor of Agronomy at the Technical College of Munich, Lorenz Hiltner. “The term rhizosphere was introduced by Hiltner in 1904.” (Gobran, 2001) Hiltner “emphasized the critical role of microbial activities in the ‘rhizosphere’ in the nutrition and general health of plants.” (Curl, 1986) The term rhizosphere was used to “describe specifically the interaction between bacteria and legume roots.” (Lynch, 1990) Today there is debate among microbiologists and plant scientists regarding the defin...   [tags: Biology Bacteria Science Essays Papers]

Free Essays
884 words (2.5 pages)

Obesity Alters Gut Microbial Ecology Essay

- A common theme among the concerns of today’s American citizens is that of obesity. Obesity, identifiable by abnormal fat accumulation, can be defined in absolute terms by one who has a Body Mass Index (BMI) over 30. It is estimated that over 30 percent of American adults are clinically obese. This number has shown a dramatic increase from the 15 percent of American adults suffering from obesity in 1980. Globally, 400 million adults are obese, while predictions place this number at 700 million by 2015....   [tags: Biology]

Strong Essays
1879 words (5.4 pages)

Microbial Diversity Essay

- Micro- and macro-organisms are habitually associated with interactions shaping contrasting environments between different host-microbial communities {{59 Hughes-Martiny, J.B. 2006;}}. These interactions are microbial dominated as microbes outnumber host cells by many orders of magnitude {{68 Savage, D.C. 1977;}} and provide metabolic functions lacking from the host {{69 Gill, S.R. 2006;}}. Naturally occurring populations can also include interactions between host-pathogens colonization {{16 Critzer, F.J....   [tags: Micro-Ecology]

Strong Essays
1951 words (5.6 pages)