The occurrence of Candida albicans in Lake Ontario bathing beaches

1979 ◽  
Vol 25 (9) ◽  
pp. 1036-1044 ◽  
Author(s):  
J. P. Sherry ◽  
S. R. Kuchma ◽  
B. J. Dutka
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Candida Albicans ◽  
Lake Ontario ◽  
Fecal Pollution ◽  
Recreational Water ◽  
Pathogenic Yeast ◽  
Pollution Indicator ◽  
Near Shore ◽  
Indicator Data ◽  
Indicator Systems

There are inherent weaknesses associated with currently used bacterial fecal pollution indicator systems. Fecal pollution indicator data would be more meaningful if supplemented with information relating to the occurrence of pathogens in recreational water. Through surveys of four bathing beaches on Lake Ontario, it was established that the opportunistically pathogenic yeast Candida albicans occurs in near shore waters. The beaches surveyed could be differentiated on the basis of bacterial fecal pollution indicator levels and numbers of the pathogens C. albicans and Pseudomonas aeruginosa. The occurrence of C. albicans and P. aeruginosa appeared to be related to elevated fecal pollution indicator levels. Maximum numbers of all parameters were observed in July and August in association with peak bather loads at the beaches. In only one instance does the data suggest that a beach was subjected to human fecal contamination.

Complexes of Cu (II) with a-Ketoglutaric Acid and 1- (o-tolyl) Biguanide Synthesis, characterization and biological Activity

2019 ◽  
Vol 70 (10) ◽  
pp. 3603-3610
Author(s):  
Madalina Mihalache ◽  
Cornelia Guran ◽  
Aurelia Meghea ◽  
Vasile Bercu ◽  
Ludmila Motelica ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Antimicrobial Activity ◽  
Antibacterial Activity ◽  
Biological Activity ◽  
Candida Albicans ◽  
Antifungal Activity ◽  
Copper Complexes ◽  
Substrate Adhesion ◽  
Inert Substrate

The three copper complexes having a-ketoglutaric acid (H2A) and 1- (o-tolyl) biguanide (TB) ligands have been synthesized and characterized. The proposed formulas for these complexes are: [Cu(TB)(HA)]Cl (C1), [Cu(TB)(HA)CH3COO]�H2O (C2) and [Cu(TB)(HA)](NO3) (C3) where HA represents deprotonated H2A. The complexes obtained were tested for antibacterial activity against Staphylococcus aureus ATCC 25923 and Pseudomonas aeruginosa ATCC 27853, antifungal activity on Candida albicans ATCC 10231 and antitumor activity on HeLa tumor cells. Due to the antitumor, antifungal, antimicrobial activity and inhibition of inert substrate adhesion, complexes synthesized could be used for potential therapeutic applications.

Successful Control of a Co-Infection Caused by Candida albicans and Pseudomonas aeruginosa in Keratitis

2020 ◽  
Vol 20 ◽  
Author(s):  
Debarati Paul ◽  
Suman Saha ◽  
Neelam Singh ◽  
Jayansgu Sengupta ◽  
Santi M. Mandal
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Candida Albicans ◽  
Histopathological Examination ◽  
Specific Interaction ◽  
Major Threat ◽  
Effective Combination ◽  
Male Farmer ◽  
Successful Control ◽  
The Right ◽  
Corneal Button

Introduction: Nowadays, co-infection by interspecific organisms is major threat in infection control. To identify the effective combination of drugs to control the keratitis caused by Candida albicans with Pseudomonas aeruginosa are attributed in this study. Materilas and Methods: The patient of a 47 years old male farmer with infection in the right eye which showed redness and watering was treated with fortified cefazolin and fortified tobramycin before referral. No pigmentation or vascularisation was noted. The excised corneal button was also subjected to microbiological and histopathological examination. Results: A rare case of keratitis caused by co-infection of Candida albicans with Pseudomonas aeruginosa was identified. Results confirmed the inter-specific interaction of the two microorganisms. Conclusion: Cases of co-infection by Candida and Pseudomonas are not abundantly reported and difficult to treat. In this case, treatment involved Amphotercin-B and ciprofloxacin, effectively eradicated the infection. This therapy may be successfully implied for such cases of co-infection in future.

scholarly journals Bioactive Coatings with Ag-Camphorimine Complexes to Prevent Surface Colonization by the Pathogenic Yeast Candida albicans

Antibiotics ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 638
Author(s):  
M. Joana F. Pinheiro ◽  
Joana P. Costa ◽  
Fernanda Marques ◽  
Nuno P. Mira ◽  
M. Fernanda N. N. Carvalho ◽  
...  
Keyword(s):  
Candida Albicans ◽  
Medical Devices ◽  
Mammalian Cells ◽  
Surface Engineering ◽  
Pathogenic Yeast ◽  
Bioactive Coatings ◽  
Clinical Strains ◽  
Persistent Infections ◽  
Compound Q ◽  
Significant Step

Currently there is a gap between the rate of new antifungal development and the emergence of resistance among Candida clinical strains, particularly threatened by the extreme adhesiveness of C. albicans to indwelling medical devices. Two silver camphorimine complexes, [Ag(OH){OC10H14N(C6H4)2NC10H14O}] (compound P) and [{Ag(OC10H14NC6H4CH3-p)}2(μ-O)] (compound Q), are herein demonstrated as having high inhibiting activity towards the growth of Candida albicans and Candida glabrata clinical strains resistant to azoles, the frontline antifungals used in clinical practice. Compounds P and Q were also explored as bioactive coatings to prevent colonization by C. albicans and colonize the surface of indwelling medical devices, resulting in persistent infections. Functionalization of stainless steel with polycaprolactone (PCL) matrix embedded with compounds P or Q was reported for the first time to inhibit the colonization of C. albicans by 82% and 75%, respectively. The coating of PCL loaded with Q or P did not cause cytotoxic effects in mammalian cells, demonstrating the biocompatibility of the explored approach. The identification and further exploration of new approaches for surface engineering based on new molecules that can sensitize resistant strains, as herein demonstrated for complexes P and Q, is a significant step forward to improve the successful treatment of candidiasis.

scholarly journals The Inflammatory Response Induced by Aspartic Proteases of Candida albicans Is Independent of Proteolytic Activity

2010 ◽  
Vol 78 (11) ◽  
pp. 4754-4762 ◽  
Author(s):  
Donatella Pietrella ◽  
Anna Rachini ◽  
Neelam Pandey ◽  
Lydia Schild ◽  
Mihai Netea ◽  
...  
Keyword(s):  
Candida Albicans ◽  
Inflammatory Response ◽  
Proteolytic Activity ◽  
Necrosis Factor Alpha ◽  
Pathogenic Yeast ◽  
Aspartic Proteases ◽  
Akt Activation ◽  
Tnf Α ◽  
Factor Alpha ◽  
Pepstatin A

ABSTRACT The secretion of aspartic proteases (Saps) has long been recognized as a virulence-associated trait of the pathogenic yeast Candida albicans. In this study, we report that different recombinant Saps, including Sap1, Sap2, Sap3, and Sap6, have differing abilities to induce secretion of proinflammatory cytokines by human monocytes. In particular Sap1, Sap2, and Sap6 significantly induced interleukin-1β (IL-1β), tumor necrosis factor alpha (TNF-α), and IL-6 production. Sap3 was able to stimulate the secretion of IL-1β and TNF-α. All Saps tested were able to induce Ca2+ influx in monocytes. Treatment of these Saps with pepstatin A did not have any effect on cytokine secretion, indicating that their stimulatory potential was independent from their proteolytic activity. The capacity of Saps to induce inflammatory cytokine production was also independent from protease-activated receptor (PAR) activation and from the optimal pH for individual Sap activity. The interaction of Saps with monocytes induced Akt activation and phosphorylation of IκBα, which mediates translocation of NF-κB into the nucleus. Overall, these results suggest that individual Sap proteins can induce an inflammatory response and that this phenomenon is independent from the pH of a specific host niche and from Sap enzymatic activity. The inflammatory response is partially dependent on Sap denaturation and is triggered by the Akt/NF-κB activation pathway. Our data suggest a novel, activity-independent aspect of Saps during interactions of C. albicans with the host.

Thực trạng ô nhiễm vi sinh vật trong khăn ướt dùng một lần ở các nhà hàng, quán ăn tại thành phố Nha Trang năm 2019

2021 ◽  
Vol 31 (9) ◽  
pp. 83-89
Author(s):  
Dương Thị Hồng Thắm ◽  
Hồ Văn Quốc ◽  
Lý Thế Vinh ◽  
Nguyễn Tất Hòa ◽  
Đỗ Thái Hùng
Keyword(s):  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Candida Albicans

Nghiên cứu mô tả cắt ngang năm 2019 trên 150 mẫu khăn ướt dùng 1 lần làm từ vải không dệt, được lấy từ 150 nhà hàng, quán ăn trên địa bàn thành phố Nha Trang nhằm  mô tả thực trạng mức độ ô nhiễm vi sinh vật đếm được, các vi khuẩn gây bệnh Pseudomonas aeruginosa, Staphylococcus aureus và nấm Candida albicans. Kết quả nghiên cứu cho thấy 68% (102/150) nhà hàng quán ăn có mẫu khăn ướt dùng 1 lần đạt tiêu chuẩn khăn ướt dùng cho các đối tượng khác theo TCVN 11528:2016. Tổng số vi sinh vật đếm được trung bình là 5,6 × 106 ± 3,7 × 107 CFU/g (XTB ± SD), thấp nhất là < 10 CFU/g, cao nhất là 3,5 × 108 CFU/g. Có 20,3% (12/59) nhà hàng, quán ăn có mẫu khăn ướt bị nhiễm vi sinh vật phân lập được P. aeruginosa, với số lượng trung bình là: 3,6 × 106 ± 2,0×107 CFU/g, cao nhất là 1,4 × 108 CFU/g và thấp nhất là < 10 CFU/g. Không phát hiện thấy S. aureus và C. albicans trong các mẫu khăn ướt thu thập được. Nghiên cứu này cho thấy có gần 40% nhà hàng, quán ăn có mẫu khăn ướt bị ô nhiễm ít nhất 1 tác nhân vi sinh vật, do vậy các nhà hàng, quán ăn cần lựa chọn các cơ sở cung cấp khăn ướt có chất lượng tốt.

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