Muhammad Fahad
Chaudhary, Ali Abbas Dilawar, Muhammad Asim, Suneel Ahmad, and Unsa Saleem, from
the institute of Cameroon. wrote a Research article about, Drug-Resistant
Streptococcus pyogenes in Faisalabad Raw Milk. Entitled, Detection of
multi-drug resistant Streptococcus pyogenes from raw milk samples in Faisalabad.
This research paper published by the International Journal of Biosciences | IJB.
an open access scholarly research journal on Biosciences. under the
affiliation of the International Network For Natural Sciences|
INNSpub. an open access multidisciplinary research journal publisher.
Abstract
Milk is a very important source of nutrition for humans as well as animals. It contains carbohydrates, fats, vitamins, and minerals. Due to its nutritious composition, it is an excellent medium for the growth of microorganisms. Milk gets contaminated by different microorganisms including Streptococcus species. Considering its importance, the present study was designed to check the microbial contamination of raw milk. 90 samples were collected from different areas of Faisalabad city. Mainly Streptococcus species were targeted and isolated. Out of 90, only 23 samples were found positive for Streptococcus species. Most species were identified as Streptococcus pyogenes by biochemical characteristics. Antibiotic susceptibility testing was performed and isolates were found to be susceptible to Amikacin (30µg), Tazobactam (110µg), Levofloxacin (5µg), Tobramycin (30µg), Ampicilin-sulbactam (20µg), Chloromphenicol (30µg), and Gentamycin (30µg) and were resistant to Cefoxitin (30µg), Tigecycline (15µg), Cefipime (30µ), Ampicilin (10µ), Cefotoxime (10µg), Trimethoprim (25µg), Cefuroxime (30µg), Cefixime (5µg), Tetracycline (10µg). For further confirmation, Minimum Inhibitory Concentration was performed according to CLSI guidelines and results showed that isolates were susceptible to only Ampicillin, Amikacin and Erythromycin. Animals suffering from clinical or sub-clinical mastitis are the source of Streptococcal contamination of milk. The current study supports the finding that raw milk can be regarded as a critical source of MDR bacteria. Strict monitoring and the implementation of effective hygienic should be implemented.
Read more : Honeybee Foraging on Wild Flowers in Dang, Cameroon | InformativeBD
Introduction
Milk is a
nutrient-rich,white liquid food produced by the mammary glands of mammals. It
is a primary source of nutrition for children and good for bone growth as it is
rich in calcium. Its demand in the global market is increasing day by day. It
is also used for the production of a variety of dairy products like yogurt, cheese,
etc.It containscarbohydrates, fats, vitamins, and minerals(Guetouache et al.,
2014).Due to its nutritious composition, it is an excellent medium for the
growth of many microbial communities(Soomro et al., 2002). Milk gets
contaminated by different microorganisms including Listeria monocytogenes,
Streptococcus species, Staphylococcus species, Compylobacter species,
Mycobacterium tuberculosis, etc and these microorganisms adversely affect the
quality of milk(Elmoslemany et al., 2009).These pathogenic microorganisms are
known to cause serious health hazards to the general population.Milk can serve
as a source for transferring these microorganisms from animals to humans
(Zoonosis)(Garcell et al. 2015). Milk is extremely susceptible to spoilage due
to these microorganisms which get into milk from different sources such as
Milkman’s hands, water, feed, Animal’s skin,utensils, environment, etc (Prejit
et al., 2007). Microorganisms present in raw milk produce toxins and are
responsible for foodborne diseases.Food borne diseases are responsible for
>50% cases of mortality to children. These microorganisms are the huge
challenge for the dairy industry.
Microorganisms are also
present in the milk if the animal suffers from mastitis(Jeykumar et al. 2013).
Generally, mastitis is divided into Clinical, subclinical and chronic(Haggag et
al. 2018). Mastitis is a multifactorial disease and is very difficult to
control. Mastitis can be caused by different bacterial species mainly
Streptococcus and Staphylococcus species. Additionally, different pathogens are
typical of different types of mastitis (Clinical, sub-clinical and heifer
mastitis). Pathogens involved in bovine mastitis are classified as contagious
or environmental pathogen depending upon their epidemiological association with
the disease(Azevedo et al., 2015). Contagious pathogens are those which spread
from one animal to another while the primary source of pathogen is animal.
Environmental pathogens are those which enter the milk during milking whereas
the primary source of pathogen is the environment. Due to its economic
importance, extensive research is being carried out to determine the
microorganisms which affect the quality of milk.Given growing public awareness
about food safety and quality, information about the microbial contamination of
milk is of great significance. Until now information on such aspects in
Pakistan is scant and scattered. This study was performed to check the
microbial contamination of milk in different areas of Faisalabad, Punjab, Pakistan.
In this study, Streptococcal species that are adversely affecting the quality
of milk are isolated. Because these microorganisms also cause food-borne
diseases in the population so their susceptibility to different antibiotics is
also determined. This test revealed that the organism is multidrug resistance
(MDR).This MDR organism is one of the maincauses of the emerging problem of
antibiotics resistance in humans. These bacteria become resistant to
antibiotics when these antibiotics are overused in livestock(Azevedo et al.
2015). This resistant organism enters into humans through the milk of these
organisms.
Reference
Elmoslemany AM, Keefe
JP, Dohoo IR, Dingwell RT. 2009. Microbiological quality of bulk tank raw
milk in Prince Edward Island dairy herds. Journal of Dairy Science 92(9), 4239-4248. http://dx.doi.org/10.3168/jds.2008-1751
Aijaz Hussain Smmoro,
Arain MA, Khaskheli M, BachalBhutto. 2002. Isolation of Escherichia Coli
from Raw Milk and Milk Products in Relation to Public Health Sold under Market
Conditions at Tandojam, Pakistan. Pakistan Journal of Nutrition 1(3), 151-152. http://dx.doi.org/10.3923/pjn.2002.151.152
Carla Maria Lopes de
Azevedo, Diana Pacheco, Luisa Soares, Ricardo Romao, Monica Moitoso, Jaime
Maldonado, Roger Guix, Joao Simoes. 2015. Prevalence of contagious and
environmental mastitis-causing bacteria in bulk tank milk and its relationships
with milking practices of dairy cattle herds in São Miguel Island (Azores).
Tropical Animal Health and Production 48(2), 451-459. http://dx.doi.org/10.1007/s11250-015-0973-6
Cinthia Alves-Barroco,
Catarina Rodrigues, Luis Raposo R, Catarina Bras, Mario Diniz, Joao Caco, Pedro
Costa M, lida Santos –Sanches, Alexandra Fernandes R. 2018. Streptococcus
dysgalactiae subsp. Dysgalactiae isolated from milk of the bovine udder as
emerging pathogens: In vitro and in vivo infection of human cells and zebrafish
as biological models, microbiologyOpen 8(17). http://dx.doi.org/10.1002/mbo3.623
Clinton Mcdaniel J,
Diana Cardwell M, Robert Moeller B, Gregory Gray C. 2014. Humans and
Cattle: A Review of Bovine Zoonoses. Vector borne and zoonotic diseases 14(1),
1-19. http://dx.doi.org/10.1089/vbz.2012.1164
Guerin-Faublee V, Tardy
F, Bouveron C, Carret G. 2002. Antimicrobial susceptibility of
Streptococcus species isolated from clinical mastitis in dairy cows.
International journal of antimicrobial agents 19(3), 219-226. http://dx.doi.org/10.1016/s0924-8579(01)00485-x
Guetouache Mourad,
Guessas Bettache, Medjekal Samir. 2014. Composition and nutritional value
of raw milk. Issues in Biological Sciences and Pharmaceutical Research 2(10),
155-122. http://dx.doi.org/10.15739/IBSPR.005
Thaker HC, Brahmbhatt
MN, Nayak JB. 2013. Isolation and identification of Staphylococcus aureus
from milk and milk products and their drug resistance patterns in Anand,
Gujarat. Veterinary World 5(12), 10-13, http://dx.doi.org/10.5455/vetworld.2013.10-13
Humberto Guanche
Garcell E, Guilarte Garcia Pedro Vazquez Pueyo I, Rodriguez Martin, Ariadna
Villanueva Arias, Ramon Alfonso Serrano N. 2016. Outbreaks of brucellosis
related to the consumption of unpasteurized camel milk. Journal of Infection
and Public Health 9(4). http://dx.doi.org/10.1016/j.jiph.2015.12.006
Jan Hudzicki. 2009.
kirby-bauer disk diffusion susceptibility test protocol, American Society For
Microbiology (ASM)(December 2009), 1–13, https://www.asm.org/Protocols/Kirby-Bauer-Disk-Diffusion-Susceptibility-Test-Pro
Jeykumar, Vinodkumar G,
Bimal P Bashir, Sudhakar Krovvidi. 2013. Antibiogram of mastitis pathogens
in the milk of crossbred cows in Namakkal district, Tamil Nadu, Veterinary
World 6(6), 354-356. http://dx.doi.org/10.5455/vetworld.2013.354-356
Prejit Nanu E, Latha C. 2007.
Microbial quality assurance of milk during production, processing and
marketing. American Journal of Food Technology 2(3), 136-144, http://dx.doi.org/10.3923/ajft.2007.136.144
Silpi Basak, Priyanka
Singh, Monali Rajurkar. 2016. Multidrug resistant and extensively drug
resistant bacteria: A Study. Journal of Pathogens 1-5, http://dx.doi.org/10.1155/2016/4065603
Stephen Oliver P,
Bhushan Jayarao M, Raul Almeida A. 2005. Foodborne Pathogens in Milk and
the Dairy Farm Environment: Food Safety and Public Health Implications.
Foodborne pathogens and disease 2(2), 115-29, http://dx.doi.org/10.1089/fpd.2005.2.115
Wiegand I, Hilpert K,
Hancock RE. 2008. Agar and broth dilution methods to determine the minimal
inhibitory concentration (MIC) of antimicrobial substances. Nature
Protocols 3(2), 163-175, http://dx.doi.org/10.1038/nprot.2007.521
Yasser Haggag N,
Mohamed Nossair A, Alaa Mansour M, Amir Abd el Rahman. 2018. Streptococci
in Dairy Farms: Isolation, Antibiogram Pattern and Disinfectant Sensitivity.
Alexandria Journal of Veterinary Sciences 59(2), 85-92, http://dx.doi.org/10.5455/ajvs.8031
Article source : Detection of multi-drug resistant Streptococcus pyogenes from raw milk samples in Faisalabad














