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Research Article | Volume 3 Issue 2 (July-Dec, 2022) | Pages 1 - 5
Screening for Intercellular Adhesion Gene Cluster Genes Staphylococcus aureus Isolated from UTI Cases
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1
Faten Othman Farhan, Department of Biotechnology, Institute of Natural and Applied Sciences, Çukurova University, Adana, Turkey
2
Fatih Köksal, Department of Medical Microbiology, Faculty of Medicine, Çukurova University, Adana, Turkey
3
Osama Nahdom Nijris, Microbiology, Applied sciences, Samaraa University, Iraq
4
Aliah Othman Farhan, Collage of Pharmacy, Al-Kitab University, Kirkuk, Iraq
5
Waleed Khalid Ahmed, Department of Medical Laboratory Technologies, AL-Hadba University College, Mosul, Iraq
6
Hasan Alantake, Department of Medical Microbiology, Faculty of Medicine, Çukurova University, Adana, Turkey
Under a Creative Commons license
Open Access
Received
April 3, 2022
Revised
May 9, 2022
Accepted
June 19, 2022
Published
July 10, 2022
Abstract

144 urine samples were collected from persons suspected of urinary tract infections; their ages ranged from 7 to 60 years. Some pathogens of urinary tract infections were investigated, diagnosed, and antibiotic sensitivity tested. The percentage of patients with diabetes and pregnant women was also investigated, in addition to comparing patients between age and gender. The results showed the results of isolation and diagnosis of Staphylococcus aureus showed 15.27% of the number of (22) samples and were divided into age groups. The present study evaluated the ability of biofilm formation and the presence of (icaA) and (icaD) genes among strains of staphylococci isolated from patients with urinary tract infection. The presence of (icaA) and (icaD) gene was also determined by PCR technique the Biofilm development is common among Staphylococcus aureus isolated from urinary tract infections. The sensitivity of Staphylococcus aureus bacteria was tested to 10 antibiotics, and the highest sensitivity was to an antibiotic Methicillin 91%, and 86.3% towards Amoxicillin. It also gave an 81%percentage to an antibiotic Levofloxacin and Gentamicin. It is also being less sensitive to an antibiotic Ethromycin. The bacteria showed moderate sensitivity to an antibiotic Rifampicin 86.36% and to an antibiotic vancomycin 81.81% and it was less moderate sensitivity to an antibiotic Methicillin and Ethromycin 4.54%. The bacteria showed a high resistance to an antibiotic Ethromycin 90.90% and also to an antibiotic Tetracycline 81.81%, While there was no resistance to an antibiotic Rifampicin 0.0%. Through the study of the statistical analysis, it was shown that there are significant differences, that is, that there are differences in the effect of antibiotics on bacteria, and it was the best four antibiotics and had an effect on the sensitivity of bacteria it is Methicillin, Gentamicin, Levofloxacin and Ciprofloxacin.

Keywords
INTRODUCTION

Urinary tract infections are defined as an inflammatory response to the urinary system as a result of the process of invasion and settlement that occurs from sick microorganisms, and it in humans, is one of the most frequent bacterial diseases, as urinary tract infections include many pathological conditions including cystitis, urethritis and pelvic nephritis (pyelonephritis) [1].It is worth noting that urinary tract infections (UTIs) Infection occurs most commonly as a result of pathogenic bacterial origins, and it is a public health concern that affects almost every country on the planet, as it affects a large proportion of community members, especially women, children, and individuals with renal impairment, and that the number of people infected with urinary tract infections is estimated at about 250 million infected each year [2]. Natural diuresis contains fluids and salts and is free from any bacterial, fungal or viral contamination, and one of the ways of Inflammation occurs in the urinary tract by entering the bacteria of the digestive system that are It is present in the anus to the parts of the urinary tract near the urethral outlet opening and then begins to grow and multiply [3]. The two types of bacteria, both positive and negative, are among the main sources of infection in the urinary tract, in addition to the fungi and viruses that are responsible for infection of the urinary tract [4]. Of all the many and prevalent forms of staphylococcal bacteria, Staphylococcus aureus is the most hazardous, Hence the seriousness of this type of bacteria and the damage that it causes and its high virulence factors that cause in the case of early lack of accurate detection and the delusional damage that leads to the injured death burden [5]. 

 

The scientific progress and the continuous search for a drug that has the best effect on the pathogen has contributed despite the extensive usage of antibacterial medications in recent years, antibiotics are still used to treat urinary tract infections, the effectiveness of these antibiotics has begun to be affected by the increase in the ability of bacteria to Resistance to these drugs by microorganisms that may cause side effects significant damage and damage to body tissues and cells such as acute renal insufficiency [6]. The idea of this study came from the above-mentioned data about the spread of Staphylococcus aureus that causes urinary tract infection and the development of its resistance to old and new antibiotics, as well as a comparison of some of the basic factors on which UTI depends. Aims of the study: Given the importance of diagnosing bacterial causes of urinary tract infections and Screening for genes responsible for adhesion factors in Staphylococcus aureus using a PCR technique.

MATERIALS AND METHODS

200 urine samples were collected from both Gander within the age groups (7 - 60 years). Samples were collected in sterile plastic bottles after patients who had previously taken antibiotics were isolated admission to hospital, and it was recommended that the collection be from mid-urine (-Clean – Catch -Midstream Urine) after washing the genital area with soap and water to avoid contamination with natural flora the surfactant present in this area for children over the age of two years and adults, but without that, it has been done use of small adhesive bags for collection [7]. Recorded information related to the patient’s history and disease. 5 ml of diuresis was taken and placed in a centrifuge for five minutes 3000-5000 cycles / minute, the filtrate was removed and a drop of the precipitate was taken and examined under a light microscope to check for Pus cells, Bacterial cells, and Epithelial cells cell and other materials. A drop was taken from each urine sample by the loop of the conveyor and cultured on the macconky agar and blood agar and also cultured on the mannitol salt agar, and then Then it was incubated at 37 ° C for 24-18 hours, were done then the developing colonies are purified to obtain individual colonies for the purpose of diagnosing them by their characteristics phenotypic and chemical.

RESULTS AND DISCUSSION

The urine samples collected from patients who were referred to the were examined at ages ranging from (7-60) years, of which there were 200 samples. Studies indicate that the presence of more than 5 purulent cells per microscopic field gives an indication of the presence of a urinary tract infection, in addition to the presence of bacteria, which necessitates a transplantation of the urine sample [8].

 

When these samples were grown on agricultural circles, 144 samples gave a growth of 72%, the isolates gave two types of negative growths for the gram stain with 101 samples at a rate of 69%, and positive growth for the gram stain with a number of 43 samples at a rate of 31%. No bacterial growth was shown for all samples, because the pathogen may be fungal, viral, or anaerobic bacteria that cannot be isolated by regular culture methods such as; Neisseria, Chlamydia [9].

 

In our study, 144 bacterial isolates were isolated from the collected urine samples of 200 urine samples of different ages from (7-60) if the bacterial growth rate was 72% with 144 samples. While 56 urine samples did not give bacterial growth of 28%

 

These results are in agreement with was mentioned by [10] in research he did in Luxor Hospital in Egypt, where the rate of positive samples was high 78.2% While the negative samples were 28.8% (Table 1).

 

Table 1: Number and Percentage of Isolates

The growth

The number

Percentage

Negative growth

56

28

Positive growth

144

72

Total

200

100

 

And these findings corroborate what came before [11]. In his study that he conducted in China, where the percentage of positive samples was 70.47% 136 of the 193 urine samples were collected from patients attending the First Nanjing Hospital in China, While the negative samples were 29.53% 57 of 193 urine samples.

 

During our study, urine samples were collected from both gender where their ages ranged between (7- 60). The number of females reached 88 samples, a rate of 61.1 %, while the number of males reached 56 samples, a rate of 38.8 % (Table 2).

 

Table 2: Numbers and Percentages of Gram-positive and Negative Isolates

Isolated type

The number

Percentage

Gram-negative bacteria

101

69%

Gram-positive bacteria

43

31%

Total

144

100%

 

This was also confirmed [12] in his study conducted in Uganda if the incidence of urinary tract infection among females was higher than that of males, as the rate of infection among females was 37.5% out of 176, and for males the rate of infection was 22.0% out of 91 urine samples. Also, [13] the study conducted in Poland showed that the incidence of urinary tract infection among females 72.5% is higher than that of males, whose incidence rate was 27.5%. At the age group from 40 to 50, females recorded a higher rate of infection than males, due to the hormonal changes that occur after menopause, the estrogen hormone decreases, making women more vulnerable to infected in UTI [14] (Table 3).

      

Table 3: The Number of Bacterial Infections According to The Age Group and Gender

Age Group

The Number of Infected People in Urinary Tract Infection

Males

Females

The Number of Non-Infected Urinary Tract Infection

7-17

9

3

6

11

18-28

45

15

30

13

29-39

37

17

20

15

40-50

33

10

23

7

51-61

20

11

9

10

Total

144

56

 

It was found through our study that pregnant women are more vulnerable to urinary tract infection than non-pregnant women the percentage of pregnant women was infected If the number of pregnant women samples reached 38 out of 88 female samples, a rate of 43.18% With a percentage of 26.3% of the complete number of samples that occurred bacterial growth, which was 144 samples. This is consistent with what was reported by most of the previous studies, as the incidence of tract infection Urinary tract increases during pregnancy due to many reasons, the most important of which are the physiological and hormonal changes that occur in a pregnant woman, as changes in the level of hormones, especially during the last months of pregnancy this is consistent with what was stated in most of the previous studies, where the incidence of urinary tract infection increases during pregnancy for many reasons, the most important of which are the bacterial and hormonal physiological changes that occur in a pregnant woman, such as changes in the level of hormones, especially during the last months (the third phase). Obstructs the flow of urine in the urine the bladder, which provides an appropriate environment for bacteria to clean up the causes of urinary tract infection [15] (Table 4).

 

Table 4: Staphylococcus Aureus Bacteria Distributed Among UTI Patients According to Age and Gender

Age group

Males

Females

7-17

2

3

18-28

1

4

29-39

0

2

40-50

3

4

51-61

2

1

Total

22

 

In our study showed that most of those with urinary tract infections have diabetes, if the proportion of males affected is 27 out of 56, with a rate of 48%, and this means that the percentage of males infected with the full number of infected 144 is 18.75%.

 

This study was specifically for gram-positive bacteria Staphylococcus aureus bacteria isolated from UTI patients, Where the results of the study appeared to investigate this bacterium, it showed a percentage of 15.27% with 22 samples of the total bacterial growth, which was 144 samples, this percentage was in agreement with the percentage referred to, where they confirmed that the percentage of bacteria Staphylococcus aureus was 17.9%. While [16], confirmed in his study the percentage of bacteria Staphylococcus aureus was 20.7% converge with this study.

 

Staphylococci species are frequently responsible for urinary tract infections (UTI). The potential of staphylococci to produce biofilms and the presence of both the icaA and icaD genes in Staphylococci aureus isolated from UTI patients were investigated in this study.

 

The presence of both icaA and icaD genes was assessed by PCR technique in this study, which looked at biofilm forming potential and the presence of both icaA and icaD genes among staphylococci strains recovered from patients (Table 5).

 

 

Table 5: Biochemical Test of Staphylococcus Aureus

Basic Characteristics

Properties (Staphylococcus aureus)

Catalase

Positive (+ve)

Gram Staining

Positive (+ve)

Motility

Negative (-ve)

Coagulase

Positive (+ve)

Oxidase

Negative (-ve)

Shape

Cocci

Hemolysis

Positive (+ve)– Beta

Mannito

Positive (+ve)

OF (Oxidative-Fermentative)

Fermentative

Indole

Negative (-ve)

 

The presence of icaA and icaD genes was checked in all strains. Both genes were shown to be positive in all biofilm-producing bacteria isolated, with a 190-bp band for icaA and a 200- bp band for icaD genes. There are two possible explanations for Staphylococcal organisms' capacity to colonize artificial materials. The first is bacteria producing polysaccharide slime. The second component is the existence of adhesins for the host matrix proteins that are adsorbed onto the biomaterial surface. Because biofilm protects microbes from opsonophagocytosis and antibacterial drugs, the ability of Staphylococci to form biofilms aids the bacteria in evading the host's immune response and is thought to be the cause of chronic or persistent infections. All biofilm- and abiotic-membrane-generating strains of S. aureus were submitted to polymerase chain reaction to identify icaA and icaD genes in order to identify and confirm biofilm- forming strains. The icaA and icaD genes were detected in all the tested biofilm producing S. aureus strains. The findings of [17] a gree with this study (Figure 1). 

 

 

Figure 1: PCR amplification of (A) IcaA and (B) IcaD gens

 

The current study showed the sensitivity of Gram-positive bacteria isolated from people with urinary tract infection towards a group of antibiotics shown in the table, where these bacteria showed a medium sensitivity to anti (Rifampicin) with a percentage of 86.36% and towards anti- (Ciprofloxacin) with a percentage of 31.81%.and towards the anti (Amoxicillin) by 9.9% towards the anti (Vancomycin) by 81.81%, and towards the anti (Levofloxacin) by 4.54%, towards the anti (Gentamicin) by 13.6% and towards the anti (Methicillin) by 4.54% and towards anti (Ampicllin) 40.90%, towards anti (Eromycinth) by 4.54% and towards anti (Tetracycline) by 9.9%.

 

The current study showed the sensitivity of Gram-positive bacteria isolated from people with urinary tract infection towards a group of antibiotics shown in the table, where these bacteria showed a medium sensitivity to antibiotic (Rifampicin) with a percentage of 86.36% and towards antibiotic (Ciprofloxacin) with a percentage of 31.81% and towards the antibiotic (Amoxicillin) by 9.9% towards the antibiotic (Vancomycin) by 81.81% and towards the antibiotic (Levofloxacin) by 4.54% towards the antibiotic (Gentamicin) by 13.6% and towards the anti (Methicillin) by 4.54% and towards antibiotic (Ampicllin) 40.90% towards antibiotic (Eromycinth) by 4.54% and towards antibiotic (Tetracycline) by 9.9% .

 

This study showed that some bacteria were sensitive to some antibiotics, and the bacteria were sensitive to the antibiotic (Rifampin) by 13.6% to the antibiotic (Ciprofloxacin) by 63.63% and to the antibiotic (Amoxicillin) by 86.3% and this was indicated by [18] in their study, which showed sensitivity to the antibiotic (Amoxicillin) by 83.0% and this result was close to our current study. The bacteria were sensitive to the antibiotic (Vancomycin) by 9.0% and sensitive to the antibiotic (Levofloxacin) by 81.81% and to the antibiotic (Gentamicin) by 81.81% and this did not agree with a study conducted. These bacteria showed the highest percentage of resistance towards the antibiotic (Eromycinth) with a percentage of 90.90% and also these bacteria showed resistance towards the antibiotic (Tetracycline) with a percentage of 81.81 % and this was consistent with the study [19] (Table 6).

 

Table 6: Antibiotics

Antibiotics

Symbol

Concentration Disc/µg

R

IN

S

1. Rifampicin

R

5

0(%0)

19(%86.36)

3(%13.63)

2. Ciprofloxacin

Cip

10

1(%4.54)

7 (%31.81)

14(%63.63)

3. Amoxicillin

Ax

25

1(%4.54)

2(%9.09)

19(%86.3)

4. Vancomycin

Va

30

2(%9.09)

18(%81.81)

2(%9.0)

5. Levofloxacin

Le

5

3(%13.63)

1(%4.54)

18(%81.81)

6. Gentamicin

Gen

10

1(%4.54)

3(%13.6)

18(%81.81)

7. Methicillin

Me

10

1(%4.54)

1(%4.54)

20(%90.90)

8. Ampicllin

Amp

10

5(%22.72)

9(%40.90)

8 (%36.36)

9. Ethromycin

E

10

20(%90.9)

1(%4.54)

1(%4.54)

10. Tetracycline

Te

30

18(%81.81)

2(%9.09)

2(%9.09)

CONCLUSION
  • At all ages included in the study, the incidence of urinary tract infection in females was higher, except from the age of 51 to 60 where the percentage of males was higher

  • Pregnant women, especially from the last trimester, are affected by urinary tract infection

  • The effect of people with diabetes on urinary tract infection significantly

  • Formation of staph aureus bacteria of the gene icA and icD

  • All isolates of Staphylococcus aureus were biofilm-forming

  • The best antibiotic that had a significant effect on the sensitivity of staph bacteria was methicillin, gentamicin, levofloxin and amoxicillin.

  • The staph aureus bacteria gave a high resistance to erythromycin and tetracycline

 

Recommendations 

 

  • Early referral to a specialist doctor when suffering from a urinary tract infection

  • The necessity of early detection of urinary tract infections using advanced methods

  • For the purpose of identifying and diagnosing bacterial causes as soon as possible and to avoid other complications

  • Not to take antibiotics without medical advice to avoid the emergence of bacterial strains that are resistant to antibiotics

  • Using advanced generations of effective antibiotics in treating UTI due to the high resistance of bacterial species to existing antibiotics

  • Paying attention to personal hygiene, using sterilizers and disinfectants, and washing the genital areas well

REFERENCE
  1. Mollataghi, A. et al. “Anti-acetylcholinesterase, anti-α-glucosidase, anti-leishmanial and anti-fungal activities of chemical constituents of Beilschmiedia species.” Fitoterapia, vol. 83, no. 2, 2012, pp. 298–302.

  2. Ahmed, D.A. “Prevalence of proteus spp. in some hospitals in baghdad city.” Iraqi Journal of Science, vol. 56, no. 1C, 2015, pp. 665–672.

  3. Whittaker, K. “The most common bladder infection symptoms.” Health Guidance, 2017, www.healthguidance.org/entry/5682/1/The-MostCommon-Bladder-Infection-Symptoms.html.

  4. Levinson, W. Review of Medical Microbiology and Immunology. 14th ed., McGraw-Hill Education, 2016, pp. 821.

  5. Grabe, M. et al. “Guidelines on urological infections.” European Association of Urology Guidelines, EAU Guidelines Office, 2013.

  6. Sani, I. “Application of medicinal plants to overcome antibiotic resistance in some selected multi-drug-resistant clinical Isolates.” Research and Reviews: Journal of Pharmacology and Phytotherapy, vol. 2, no. 4, 2014, pp. 48–52.

  7. Gangro, A. and A. Hl. “Urinary tract infection as a predictor of childhood malnutrition in southern Sindh, Pakistan.” Pakistan Journal of Nutrition, vol. 9, 2010, pp. 819–821.

  8. Patra, E.P. et al. “Bacterial causes of community-acquired and nosocomial urinary tract infection in type 2 diabetes: A Comparative Approach.” Journal of Diabetology, vol. 10, no. 3, 2019, pp. 102–109.

  9. Frirdich, E. et al. “The role of galacturonic acid in outer membrane stability in Klebsiella pneumoniae.” Journal of Biological Chemistry, vol. 280, no. 30, 2005, pp. 27604–27612.

  10. Elamary, R.B. et al. “Efficacy of acacia nilotica aqueous extract in treating biofilm-forming and multidrug resistant uropathogens isolated from patients with uti syndrome.” Scientific Reports, vol. 10, 2020, pp. 1–14.

  11. Hall-Stoodley, L. et al. “Bacterial biofilms: From the natural environment to infectious diseases.” Nature Reviews Microbiology, vol. 2, no. 2, 2004, pp. 95–108.

  12. Odoki, M. et al. “Prevalence of bacterial urinary tract infections and associated factors among patients attending hospitals in bushenyi district, uganda.” International Journal of Microbiology, vol. 2019, 2019, pp. 1–8.

  13. Stefaniuk, E. et al. “Etiology and antibiotic susceptibility of bacterial pathogens responsible for community-acquired urinary tract infections in Poland.” European Journal of Clinical Microbiology & Infectious Diseases, vol. 35, 2010, pp. 1363–1369.

  14. Beuth, J. et al. “Lectin-mediated cell-attachment and phagocytosis of staphylococcus saprophyticus strain S1.” Zentralblatt für Bakteriologie, Mikrobiologie und Hygiene. Series A, vol. 270, nos. 1–2, 1988, pp. 22–27.

  15. Sheikh, M.A. et al. “Incidence of urinary tract infection during pregnancy.” Eastern Mediterranean Health Journal, vol. 6, nos. 2–3, 2000, pp. 265–271.

  16. Chiţă, T. et al. “Urinary tract infections in Romanian patients with diabetes: Prevalence, etiology, and risk factors.” Therapeutics and Clinical Risk Management, vol. 13, 2017, pp. 1–7.

  17. De Silva, G.D.I. et al. “The ica operon and biofilm production in coagulase-negative staphylococci associated with carriage and disease in a neonatal intensive care unit.” Journal of Clinical Microbiology, vol. 40, no. 2, 2002, pp. 382–388.

  18. Mukherjee, M. et al. “Phylogenetic background of e. coli isolated from asymptomatic pregnant women from Kolkata, India.” Journal of Infection in Developing Countries, vol. 9, no. 7, 2015, pp. 720–724.

  19. Baloch, G.H. et al. “Urinary Tract Infection: Frequency and Pattern in Patients with Diabetes Mellitus.” Professional Medical Journal, vol. 18, no. 3, 2011, pp. 466–469.

     

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