1
|
Borjian Boroujeni Z, Shamsaei S, Yarahmadi M, Getso MI, Salimi Khorashad A, Haghighi L, Raissi V, Zareei M, Saleh Mohammadzade A, Moqarabzadeh V, Soleimani A, Raeisi F, Mohseni M, Mohseni MS, Raiesi O. Distribution of invasive fungal infections: Molecular epidemiology, etiology, clinical conditions, diagnosis and risk factors: A 3-year experience with 490 patients under intensive care. Microb Pathog 2020; 152:104616. [PMID: 33212195 DOI: 10.1016/j.micpath.2020.104616] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 11/01/2020] [Accepted: 11/09/2020] [Indexed: 12/16/2022]
Abstract
Recently, the prevalence of invasive fungal infections (IFIs) is rising. The global mortality rate of IFIs is 10-49%. This study aimed to determine the prevalence, the causative agents, and the risk factors associated with the invasive fungal infections in a tertiary health center to provide valid decision-grounds for healthcare professionals to effectively prevent, control, and treat fungal infections. The current study was conducted on 1477 patients suspected to have systemic fungal infections from different units of the hospital. After screening using routine mycological examination, the patients were confirmed with complementary mycological and molecular methods. Patients were included based on the confirmed diagnosis of IFI and excluded based on lack of a microbiologically and histologically proven diagnosis of IFI. Of the 1477 patients recruited in this study, confirmed cases of fungal infection were 490 (169 proven; 321 cases probable). Among the fungi recovered, Candida species had the highest frequency 337 (68.8%) followed by Aspergillus species 108 (22.1%), Zygomycetes species 21 (4.3%), non-Candida yeast 9 (1.8%). Others were black fungi 5 (1%), mycetoma agents 5 (1%), Fusarium 4 (0.8%), and Trichoderma (0.2%). Hematologic malignancies and diabetes mellitus were the most common underlying diseases among IFI-confirmed patients. This study observed an increased frequency of invasive candidiasis with non-albicans Candida and other invasive saprophytic fungal infections. The increased rate of invasive candidiasis with non-albicans agents highlights a new perspective in the epidemiology and treatment of invasive fungal infections.
Collapse
Affiliation(s)
- Zeinab Borjian Boroujeni
- Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Sina Shamsaei
- Department of Medical Parasitology and Mycology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Mohammad Yarahmadi
- Department of Medical Parasitology and Mycology, School of Medicine, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Muhammad Ibrahim Getso
- Department of Medical Microbiology and Parasitology, College of Health Sciences, Bayero University, PMB 3011, Kano, Nigeria
| | - Alireza Salimi Khorashad
- Department of Mycology and Parasitology, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Leila Haghighi
- Department of Medical Parasitology and Mycology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Vahid Raissi
- Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran; Department of Medical Parasitology and Mycology, School of Medicine, Lorestan University of Medical Sciences, Khorramabad, Iran.
| | - Mahdi Zareei
- Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Anita Saleh Mohammadzade
- Pharmaceutical Sciences Research Center, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Vahid Moqarabzadeh
- M Sc. of Biostatistics, Faculty of Health, Mazandaran University of Medical Sciences, Sari, Iran
| | - Ameneh Soleimani
- Department of Medical Parasitology and Mycology, School of Public Health, Mazandaran University of Medical Sciences, Sari, Iran
| | - Farid Raeisi
- Department of Nursing and Midwifery of Dezful Islamic Azad University, Dezful, Iran
| | - Moein Mohseni
- Pharmaceutical Sciences Research Center, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Maedeh Sadat Mohseni
- Department of Engineering and Technology, Islamic Azad University, Sari Branch, Sari, Iran
| | - Omid Raiesi
- Department of Parasitology, School of Allied Medical Sciences, Ilam University of Medical Sciences, Ilam, Iran.
| |
Collapse
|
2
|
Abstract
PURPOSE OF REVIEW Diagnosis of tuberculosis (TB) in people living with HIV (PLHIV) remains a challenge, despite it being the most common comorbidity in this group. In this review, we provide an overview of tests for active TB, and their diagnostic performance in PLHIV. RECENT FINDINGS New and updated diagnostic tests have better performance than traditional bacterial culture or smear microscopy in PLHIV. Recent developments in molecular tests have improved the sensitivity at which TB and drug susceptibility can be detected in PLHIV. Notably, the updated Xpert Ultra test can detect HIV-associated TB with high sensitivity, and a rapid lateral flow lipoarabinomannan-based assay has been shown to reduce TB-related mortality in hospitalized PLHIV. New directions in drug-susceptibility testing are being pursued, such as next-generation sequencing and line probe assays, but more evaluation in PLHIV is needed. There is growing understanding of subclinical TB, but methods to detect this type of TB are inadequate. SUMMARY As diagnosis is the weakest link in the TB care cascade, newer more accurate TB tests must be scaled up and fully integrated into existing healthcare systems. Drug-susceptibility testing must become universal to ensure appropriate treatment regimens are prescribed, allowing TB clearance and inhibiting development of antimicrobial resistance.
Collapse
|
3
|
Chagas OJ, Buccheri R, de Souza Carvalho Melhem M, Szeszs W, dos Anjos Martins M, de Oliveira L, Marcusso R, Santos DW. Usefulness of Yeast Cell Counting and Lack of Clinical Correlation of the Antifungal Susceptibility Testing Results in Management of Aids-associated Cryptococcal Meningitis. CURRENT FUNGAL INFECTION REPORTS 2020. [DOI: 10.1007/s12281-020-00368-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
4
|
Palhares AEM, Ferreira L, Freire M, Castillo P, Martínez MJ, Hurtado JC, Rakislova N, Varo R, Navarro M, Casas I, Vila J, Monteiro WM, Sanz A, Quintó L, Fernandes F, Carrilho C, Menéndez C, Ordi J, Bassat Q, Lacerda M. Performance of the minimally invasive autopsy tool for cause of death determination in adult deaths from the Brazilian Amazon: an observational study. Virchows Arch 2019; 475:649-658. [PMID: 31201504 PMCID: PMC6861203 DOI: 10.1007/s00428-019-02602-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 05/01/2019] [Accepted: 06/06/2019] [Indexed: 01/19/2023]
Abstract
The uncertainty about the real burden of causes of death (CoD) is increasingly recognized by the international health community as a critical limitation for prioritizing effective public health measures. The minimally invasive autopsy (MIA) has shown to be a satisfactory substitute of the complete diagnostic autopsy (CDA), the gold standard for CoD determination in low- and middle-income countries. However, more studies are needed to confirm its adequate performance in settings with different epidemiology. In this observational study, the CoD obtained with the MIA were compared with the clinical diagnosis and the results of the CDA in 61 deaths that occurred in an infectious diseases referral hospital in Manaus, Brazilian Amazon. Concordance between the categories of diseases obtained by the three methods was evaluated by the Kappa statistic. Additionally, we evaluated discrepancies between clinical and complete diagnostic autopsy diagnoses. The MIA showed a substantial concordance with the CDA (Kappa = 0.777, 95% CI 0.608-0.946), and a perfect or almost perfect coincidence in specific diagnosis (ICD-10 code) between MIA and CDA was observed in 85% of the cases. In contrast, the clinical diagnosis showed a fair concordance with the CDA (Kappa = 0.311, 95% CI 0.071-0.552). Major clinico-pathological discrepancies were identified in 49% of cases. In conclusion, the MIA showed a substantial performance for CoD identification. Clinico-pathological discrepancies remain high and justify the need for post-mortem studies, even in referral hospitals. The MIA is a robust substitute of the CDA for CoD surveillance and quality improvement of clinical practice in low- and middle-income settings.
Collapse
Affiliation(s)
| | - Luiz Ferreira
- Fundação de Medicina Tropical Dr. Heitor Viera Dourado, Manaus, 69040-000, Brazil
| | - Monique Freire
- Fundação de Medicina Tropical Dr. Heitor Viera Dourado, Manaus, 69040-000, Brazil
| | - Paola Castillo
- ISGlobal-Hospital Clínic, Universitat de Barcelona, Villarroel 170, 08036, Barcelona, Spain
- Department of Pathology, Hospital Clinic - Universitat de Barcelona, Villarroel 170, 08036, Barcelona, Spain
| | - Miguel J Martínez
- ISGlobal-Hospital Clínic, Universitat de Barcelona, Villarroel 170, 08036, Barcelona, Spain
- Department of Microbiology, Hospital Clinic - Universitat de Barcelona, 08036, Barcelona, Spain
| | - Juan Carlos Hurtado
- ISGlobal-Hospital Clínic, Universitat de Barcelona, Villarroel 170, 08036, Barcelona, Spain
- Department of Microbiology, Hospital Clinic - Universitat de Barcelona, 08036, Barcelona, Spain
| | - Natalia Rakislova
- ISGlobal-Hospital Clínic, Universitat de Barcelona, Villarroel 170, 08036, Barcelona, Spain
- Department of Pathology, Hospital Clinic - Universitat de Barcelona, Villarroel 170, 08036, Barcelona, Spain
| | - Rosauro Varo
- ISGlobal-Hospital Clínic, Universitat de Barcelona, Villarroel 170, 08036, Barcelona, Spain
- Centro de Investigação em Saúde de Manhiça (CISM), 1929, Maputo, Mozambique
| | - Mireia Navarro
- ISGlobal-Hospital Clínic, Universitat de Barcelona, Villarroel 170, 08036, Barcelona, Spain
| | - Isaac Casas
- ISGlobal-Hospital Clínic, Universitat de Barcelona, Villarroel 170, 08036, Barcelona, Spain
| | - Jordi Vila
- ISGlobal-Hospital Clínic, Universitat de Barcelona, Villarroel 170, 08036, Barcelona, Spain
- Department of Microbiology, Hospital Clinic - Universitat de Barcelona, 08036, Barcelona, Spain
| | - Wuelton M Monteiro
- Fundação de Medicina Tropical Dr. Heitor Viera Dourado, Manaus, 69040-000, Brazil
- National Council for Scientific and Technological Development (CNPq, Brasilia, Brazil) fellow, Brasília, Brazil
| | - Ariadna Sanz
- ISGlobal-Hospital Clínic, Universitat de Barcelona, Villarroel 170, 08036, Barcelona, Spain
| | - Llorenç Quintó
- ISGlobal-Hospital Clínic, Universitat de Barcelona, Villarroel 170, 08036, Barcelona, Spain
| | - Fabiola Fernandes
- Department of Pathology, Maputo Central Hospital, 1653, Maputo, Mozambique
- Faculty of Medicine, Eduardo Mondlane University, 1653, Maputo, Mozambique
| | - Carla Carrilho
- Department of Pathology, Maputo Central Hospital, 1653, Maputo, Mozambique
- Faculty of Medicine, Eduardo Mondlane University, 1653, Maputo, Mozambique
| | - Clara Menéndez
- ISGlobal-Hospital Clínic, Universitat de Barcelona, Villarroel 170, 08036, Barcelona, Spain
- Centro de Investigação em Saúde de Manhiça (CISM), 1929, Maputo, Mozambique
| | - Jaume Ordi
- ISGlobal-Hospital Clínic, Universitat de Barcelona, Villarroel 170, 08036, Barcelona, Spain.
- Department of Pathology, Hospital Clinic - Universitat de Barcelona, Villarroel 170, 08036, Barcelona, Spain.
| | - Quique Bassat
- Centro de Investigação em Saúde de Manhiça (CISM), 1929, Maputo, Mozambique
- ICREA, Catalan Institution for Research and Advanced Studies, Passeig de Lluís Companys 23, 08010, Barcelona, Spain
- Paediatric Infectious Diseases Unit, Paediatrics Department, Hospital Sant Joan de Déu - Universitat de Barcelona, 8950, Barcelona, Spain
- Consorcio de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP), 28029, Madrid, Spain
| | - Marcus Lacerda
- Fundação de Medicina Tropical Dr. Heitor Viera Dourado, Manaus, 69040-000, Brazil
- National Council for Scientific and Technological Development (CNPq, Brasilia, Brazil) fellow, Brasília, Brazil
| |
Collapse
|
5
|
Zhang J, Li L, Lv Q, Yan L, Wang Y, Jiang Y. The Fungal CYP51s: Their Functions, Structures, Related Drug Resistance, and Inhibitors. Front Microbiol 2019; 10:691. [PMID: 31068906 PMCID: PMC6491756 DOI: 10.3389/fmicb.2019.00691] [Citation(s) in RCA: 89] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2018] [Accepted: 03/19/2019] [Indexed: 12/18/2022] Open
Abstract
CYP51 (Erg11) belongs to the cytochrome P450 monooxygenase (CYP) superfamily and mediates a crucial step of the synthesis of ergosterol, which is a fungal-specific sterol. It is also the target of azole drugs in clinical practice. In recent years, researches on fungal CYP51 have stepped into a new stage attributing to the discovery of crystal structures of the homologs in Candida albicans, Cryptococcus neoformans and Aspergillus fumigatus. This review summarizes the functions, structures of fungal CYP51 proteins, and the inhibitors targeting these homologs. In particular, several drug-resistant mechanisms associated with the fungal CYP51s are introduced. The sequences and crystal structures of CYP51 proteins in different fungal species are also compared. These will provide new insights for the advancement of research on antifungal agents.
Collapse
Affiliation(s)
- Jingxiang Zhang
- Center for New Drug Research, School of Pharmacy, Second Military Medical University, Shanghai, China
| | - Liping Li
- Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, China
- Department of Pharmacology, Tongji University School of Medicine, Shanghai, China
| | - Quanzhen Lv
- Center for New Drug Research, School of Pharmacy, Second Military Medical University, Shanghai, China
| | - Lan Yan
- Center for New Drug Research, School of Pharmacy, Second Military Medical University, Shanghai, China
- *Correspondence: Lan Yan, Yan Wang, Yuanying Jiang,
| | - Yan Wang
- Center for New Drug Research, School of Pharmacy, Second Military Medical University, Shanghai, China
- *Correspondence: Lan Yan, Yan Wang, Yuanying Jiang,
| | - Yuanying Jiang
- Center for New Drug Research, School of Pharmacy, Second Military Medical University, Shanghai, China
- Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, China
- Department of Pharmacology, Tongji University School of Medicine, Shanghai, China
- *Correspondence: Lan Yan, Yan Wang, Yuanying Jiang,
| |
Collapse
|
6
|
Guimarães LC, Silva ACALD, Micheletti AMR, Moura ENM, Silva-Vergara ML, Tostes S, Adad SJ. Morphological changes in the digestive system of 322 necropsies of patients with acquired immune deficiency syndrome: comparison of findings pre- and post-HAART (Highly Active Antiretroviral Therapy). Rev Inst Med Trop Sao Paulo 2017; 59:e3. [PMID: 28380114 PMCID: PMC5441154 DOI: 10.1590/s1678-9946201759003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Accepted: 09/22/2016] [Indexed: 11/21/2022] Open
Abstract
Involvement of the digestive system in AIDS pathologies or injuries is frequent. Aiming at comparing the frequency, the importance that these lesions have for death and the survival time in patients using or not using HAART, we studied 322 necropsies classified as follows: Group A - without antiretroviral drugs (185 cases); B - one or two antiretroviral drugs or HAART for less than six months (83 cases); C - HAART for six months or longer (54 cases). In the overall analysis of the digestive system, changes were present in 73.6% of cases. The most frequent was Candida infection (22.7%), followed by cytomegalovirus (19.2%), Histoplasma capsulatum (6.5%), mycobacteria (5.6%), and Toxoplasma gondii (4.3%). T. gondii infection was more frequent in group A compared with group C, and cytomegalovirus (CMV) was more frequent in group A compared with groups B and C (p < 0.05); 2.2% of the deaths were due to gastrointestinal bleeding. Regarding the segments, only in the large intestine, and only cytomegalovirus, were more frequent in group A compared with group C. We conclude that digestive system infections are still frequent, even with the use of HAART. However, the average survival time in group C was more than three times greater than the one in group A and nearly double that of group B, demonstrating the clear benefit of this therapy.
Collapse
Affiliation(s)
- Lucinda Calheiros Guimarães
- Universidade Federal do Triângulo Mineiro, Departamento de Patologia Especial, Uberaba, Minas Gerais, Brazil
| | | | | | - Everton Nunes Melo Moura
- Universidade Federal do Triângulo Mineiro, Departamento de Patologia Especial, Uberaba, Minas Gerais, Brazil
| | - Mario Léon Silva-Vergara
- Universidade Federal do Triângulo Mineiro, Departamento de Patologia Especial, Uberaba, Minas Gerais, Brazil
| | - Sebastião Tostes
- Universidade Federal do Triângulo Mineiro, Departamento de Patologia Especial, Uberaba, Minas Gerais, Brazil
| | - Sheila Jorge Adad
- Universidade Federal do Triângulo Mineiro, Departamento de Patologia Especial, Uberaba, Minas Gerais, Brazil
| |
Collapse
|
7
|
Enoch DA, Yang H, Aliyu SH, Micallef C. The Changing Epidemiology of Invasive Fungal Infections. Methods Mol Biol 2017; 1508:17-65. [PMID: 27837497 DOI: 10.1007/978-1-4939-6515-1_2] [Citation(s) in RCA: 228] [Impact Index Per Article: 32.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Invasive fungal infections (IFI) are an emerging problem worldwide with invasive candidiasis and candidemia responsible for the majority of cases. This is predominantly driven by the widespread adoption of aggressive immunosuppressive therapy among certain patient populations (e.g., chemotherapy, transplants) and the increasing use of invasive devices such as central venous catheters (CVCs). The use of new immune modifying drugs has also opened up an entirely new spectrum of patients at risk of IFIs. While the epidemiology of candida infections has changed in the last decade, with a gradual shift from C. albicans to non-albicans candida (NAC) strains which may be less susceptible to azoles, these changes vary between hospitals and regions depending on the type of population risk factors and antifungal use. In certain parts of the world, the incidence of IFI is strongly linked to the prevalence of other disease conditions and the ecological niche for the organism; for instance cryptococcal and pneumocystis infections are particularly common in areas with a high prevalence of HIV disease. Poorly controlled diabetes is a major risk factor for invasive mould infections. Environmental factors and trauma also play a unique role in the epidemiology of mould infections, with well-described hospital outbreaks linked to the use of contaminated instruments and devices. Blastomycosis is associated with occupational exposure (e.g., forest rangers) and recreational activities (e.g., camping and fishing).The true burden of IFI is probably an underestimate because of the absence of reliable diagnostics and lack of universal application. For example, the sensitivity of most blood culture systems for detecting candida is typically 50 %. The advent of new technology including molecular techniques such as 18S ribosomal RNA PCR and genome sequencing is leading to an improved understanding of the epidemiology of the less common mould and dimorphic fungal infections. Molecular techniques are also providing a platform for improved diagnosis and management of IFI.Many factors affect mortality in IFI, not least the underlying medical condition, choice of therapy, and the ability to achieve early source control. For instance, mortality due to pneumocystis pneumonia in HIV-seronegative individuals is now higher than in seropositive patients. Of significant concern is the progressive increase in resistance to azoles and echinocandins among candida isolates, which appears to worsen the already significant mortality associated with invasive candidiasis. Mortality with mould infections approaches 50 % in most studies and varies depending on the site, underlying disease and the use of antifungal agents such as echinocandins and voriconazole. Nevertheless, mortality for most IFIs has generally fallen with advances in medical technology, improved care of CVCs, improved diagnostics, and more effective preemptive therapy and prophylaxis.
Collapse
Affiliation(s)
- David A Enoch
- National Infection Service, Public Health England, Cambridge Microbiology and Public Health Laboratory, Addenbrooke's Hospital, Box 236, Cambridge Biomedical Campus, Hills Road, Cambridge, CB2 0QW, UK.
| | - Huina Yang
- National Infection Service, Public Health England, Cambridge Microbiology and Public Health Laboratory, Addenbrooke's Hospital, Box 236, Cambridge Biomedical Campus, Hills Road, Cambridge, CB2 0QW, UK
| | - Sani H Aliyu
- National Infection Service, Public Health England, Cambridge Microbiology and Public Health Laboratory, Addenbrooke's Hospital, Box 236, Cambridge Biomedical Campus, Hills Road, Cambridge, CB2 0QW, UK
| | - Christianne Micallef
- National Infection Service, Public Health England, Cambridge Microbiology and Public Health Laboratory, Addenbrooke's Hospital, Box 236, Cambridge Biomedical Campus, Hills Road, Cambridge, CB2 0QW, UK
| |
Collapse
|
8
|
Lawn SD, Gupta-Wright A. Detection of lipoarabinomannan (LAM) in urine is indicative of disseminated TB with renal involvement in patients living with HIV and advanced immunodeficiency: evidence and implications. Trans R Soc Trop Med Hyg 2016; 110:180-5. [PMID: 26884498 PMCID: PMC4755427 DOI: 10.1093/trstmh/trw008] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
TB is the leading cause of HIV/AIDS-related deaths globally. New diagnostic tools are urgently needed to avert deaths from undiagnosed HIV-associated TB. Although simple assays that detect lipoarabinomannan (LAM) in urine have been commercially available for years, their specific role and utility were initially misunderstood, such that they have been slower to emerge from the diagnostics pipeline than otherwise might have been expected. In this article, we review and explain how urine-LAM assays should be understood as diagnostics for disseminated TB in HIV-positive patients with advanced immunodeficiency, in whom haematogenous TB dissemination to the kidneys serves as the primary mechanism by which LAM enters the urine. These insights are critical for the appropriate design of studies to evaluate these assays and to understand how they might be most usefully implemented. This understanding also supports the 2015 WHO recommendations on the restricted use of these assays in sick HIV-positive patients with advanced immunodeficiency.
Collapse
Affiliation(s)
- Stephen D Lawn
- Department of Clinical Research, Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, UK The Desmond Tutu HIV Centre, Institute of Infectious Disease and Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - Ankur Gupta-Wright
- Department of Clinical Research, Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, UK Malawi-Liverpool-Wellcome Trust Clinical Research Program, University of Malawi College of Medicine, Blantyre, Malawi
| |
Collapse
|
9
|
Torres RG, Etchebehere RM, Adad SJ, Micheletti AR, Ribeiro BDM, Silva LEA, Mora DJ, Paim KF, Silva-Vergara ML. Cryptococcosis in Acquired Immunodeficiency Syndrome Patients Clinically Confirmed and/or Diagnosed at Necropsy in a Teaching Hospital in Brazil. Am J Trop Med Hyg 2016; 95:781-785. [PMID: 27458037 DOI: 10.4269/ajtmh.16-0148] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Accepted: 06/14/2016] [Indexed: 11/07/2022] Open
Abstract
Cryptococcosis occurs in acquired immunodeficiency syndrome (AIDS) patients with poor compliance to antiretroviral therapy or unaware of their human immunodeficiency virus status who present severe immunosuppression at admission. Consequently, high mortality rates are observed due to disseminated fungal infection. This report presents clinical and postmortem data of AIDS patients with cryptococcosis in a teaching hospital in Brazil. Retrospectively, medical and necropsy records of AIDS patients with cryptococcosis clinically confirmed and/or postmortem verified were reviewed. Clinical data were compared with those of patients presenting a good outcome to evaluate disseminated fungal infection and the agreement between clinical and postmortem diagnosis. At admission, most of the 45 patients with cryptococcal meningitis who died, presented more altered consciousness (P = 0.0047), intracranial increased pressure (P = 0.047), and severe malnutrition (P = 0.0006) than the survivors. Of 29 (64.4%) patients with cryptococcal meningitis, 23 died before week 2 on antifungal therapy, and the other six during the next 3 months. The remaining 16 (35.6%) cases had other diagnoses and died soon after. At necropsy, 31 (68.9%) presented disseminated infection involving two or more organs, whereas 14 (31.1%) cases had meningeal or pulmonary localized infection. The agreement of 64.4% between clinical and postmortem diagnosis was similar to some studies. However, other reports have shown figures ranging from 34% to 95%. Currently, a progressive worldwide decrease of autopsies is worrying because the role of postmortem examination is pivotal to verify or identify the death causes, which contributes to improve the quality of clinical diagnosis and medical training.
Collapse
Affiliation(s)
- Rafael Garcia Torres
- Infectious Diseases Unit, Triângulo Mineiro Federal University, Minas Gerais, Brazil
| | | | - Sheila Jorge Adad
- Discipline of Special Pathology, Triângulo Mineiro Federal University, Minas Gerais, Brazil
| | - Adilha Rua Micheletti
- Discipline of Special Pathology, Triângulo Mineiro Federal University, Minas Gerais, Brazil
| | | | | | - Delio Jose Mora
- Infectious Diseases Unit, Triângulo Mineiro Federal University, Minas Gerais, Brazil
| | - Kennio Ferreira Paim
- Infectious Diseases Unit, Triângulo Mineiro Federal University, Minas Gerais, Brazil
| | | |
Collapse
|
10
|
Prevalence of tuberculosis in post-mortem studies of HIV-infected adults and children in resource-limited settings: a systematic review and meta-analysis. AIDS 2015; 29:1987-2002. [PMID: 26266773 PMCID: PMC4568896 DOI: 10.1097/qad.0000000000000802] [Citation(s) in RCA: 258] [Impact Index Per Article: 28.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Objectives: Tuberculosis (TB) is estimated to be the leading cause of HIV-related deaths globally. However, since HIV-associated TB frequently remains unascertained, we systematically reviewed autopsy studies to determine the true burden of TB at death. Methods: We systematically searched Medline and Embase databases (to end 2013) for literature reporting on health facility-based autopsy studies of HIV-infected adults and/or children in resource-limited settings. Using forest plots and random-effects meta-analysis, we summarized the TB prevalence found at autopsy and used meta-regression to explore variables associated with autopsy TB prevalence. Results: We included 36 eligible studies, reporting on 3237 autopsies. Autopsy TB prevalence was extremely heterogeneous (range 0–64.4%), but was markedly higher in adults [pooled prevalence 39.7%, 95% confidence interval (CI) 32.4–47.0%] compared to children (pooled prevalence 4.5%, 95% CI 1.7–7.4%). Post-mortem TB prevalence varied by world region, with pooled estimates in adults of 63.2% (95% CI 57.7–68.7%) in South Asia (n = 2 studies); 43.2% (95% CI 38.0–48.3) in sub-Saharan Africa (n = 9 studies); and 27.1% (95% CI 16.0–38.1%) in the Americas (n = 5 studies). Autopsy prevalence positively correlated with contemporary estimates of national TB prevalence. TB in adults was disseminated in 87.9% (82.2–93.7%) of cases and was considered the cause of death in 91.4% (95% CI 85.8–97.0%) of TB cases. Overall, TB was the cause of death in 37.2% (95% CI 25.7–48.7%) of adult HIV/AIDS-related deaths. TB remained undiagnosed at death in 45.8% (95% CI 32.6–59.1%) of TB cases. Conclusions: In resource-limited settings, TB accounts for approximately 40% of facility-based HIV/AIDS-related adult deaths. Almost half of this disease remains undiagnosed at the time of death. These findings highlight the critical need to improve the prevention, diagnosis and treatment of HIV-associated TB globally.
Collapse
|
11
|
Lawn SD, Kerkhoff AD, Burton R, Schutz C, van Wyk G, Vogt M, Pahlana P, Nicol MP, Meintjes G. Rapid microbiological screening for tuberculosis in HIV-positive patients on the first day of acute hospital admission by systematic testing of urine samples using Xpert MTB/RIF: a prospective cohort in South Africa. BMC Med 2015; 13:192. [PMID: 26275908 PMCID: PMC4537538 DOI: 10.1186/s12916-015-0432-2] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Accepted: 07/22/2015] [Indexed: 12/02/2022] Open
Abstract
BACKGROUND Autopsy studies of HIV/AIDS-related hospital deaths in sub-Saharan Africa reveal frequent failure of pre-mortem diagnosis of tuberculosis (TB), which is found in 34-64 % of adult cadavers. We determined the overall prevalence and predictors of TB among consecutive unselected HIV-positive adults requiring acute hospital admission and the comparative diagnostic yield obtained by screening urine and sputum samples obtained on day 1 of admission with Xpert MTB/RIF (Xpert). METHODS To determine overall TB prevalence accurately, comprehensive clinical sampling (sputum, urine, blood plus other relevant samples) was done and TB was defined by detection of Mycobacterium tuberculosis in any sample using Xpert and/or mycobacterial liquid culture. To evaluate a rapid screening strategy, we compared the diagnostic yield of Xpert testing sputum samples and urine samples obtained with assistance from a respiratory study nurse in the first 24 h of admission. RESULTS Unselected HIV-positive acute adult new medical admissions (n = 427) who were not receiving TB treatment were enrolled irrespective of clinical presentation or symptom profile. From 2,391 cultures and Xpert tests done (mean, 5.6 tests/patient) on 1,745 samples (mean, 4.1 samples/patient), TB was diagnosed in 139 patients (median CD4 cell count, 80 cells/μL). TB prevalence was very high (32.6 %; 95 % CI, 28.1-37.2 %; 139/427). However, patient symptoms and risk factors were poorly predictive for TB. Overall, ≥1 non-respiratory sample(s) tested positive in 115/139 (83 %) of all TB cases, including positive blood cultures in 41/139 (29.5 %) of TB cases. In the first 24 h of admission, sputum (spot and/or induced samples) and urine were obtainable from 37.0 % and 99.5 % of patients, respectively (P <0.001). From these, the proportions of total TB cases (n = 139) that were diagnosed by Xpert testing sputum, urine or both sputum and urine combined within the first 24 h were 39/139 (28.1 %), 89/139 (64.0 %) and 108/139 (77.7 %) cases, respectively (P <0.001). CONCLUSIONS The very high prevalence of active TB and its non-specific presentation strongly suggest the need for routine microbiological screening for TB in all HIV-positive medical admissions in high-burden settings. The incremental diagnostic yield from Xpert testing urine was very high and this strategy might be used to rapidly screen new admissions, especially if sputum is difficult to obtain.
Collapse
Affiliation(s)
- Stephen D Lawn
- Department of Clinical Research, Faculty of Infectious and Tropical Diseases, London School of Hygiene & Tropical Medicine, Keppel Street, London, WC1E 7HT, UK. .,The Desmond Tutu HIV Centre, Institute of Infectious Disease and Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa. .,Department of Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa.
| | - Andrew D Kerkhoff
- The Desmond Tutu HIV Centre, Institute of Infectious Disease and Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa. .,Department of Medicine, University of California San Francisco School of Medicine, San Francisco, CA, USA. .,Department of Global Health, Academic Medical Center, Amsterdam Institute for Global Health and Development, University of Amsterdam, Amsterdam, The Netherlands.
| | - Rosie Burton
- Department of Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa. .,GF Jooste Hospital, Manenberg, Cape Town, South Africa. .,Khayelitsha District Hospital, Cape Town, South Africa.
| | - Charlotte Schutz
- Department of Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa. .,Clinical Infectious Diseases Research Initiative, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa.
| | - Gavin van Wyk
- Department of Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa. .,GF Jooste Hospital, Manenberg, Cape Town, South Africa.
| | - Monica Vogt
- The Desmond Tutu HIV Centre, Institute of Infectious Disease and Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa.
| | - Pearl Pahlana
- The Desmond Tutu HIV Centre, Institute of Infectious Disease and Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa.
| | - Mark P Nicol
- Division of Medical Microbiology and Institute for Infectious Diseases and Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa. .,National Health Laboratory Service, Groote Schuur Hospital, Cape Town, South Africa.
| | - Graeme Meintjes
- Department of Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa. .,Clinical Infectious Diseases Research Initiative, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa. .,Department of Medicine, Imperial College, London, UK.
| |
Collapse
|
12
|
Chawhan SM, Bhat DM, Solanke SM. Dermatological manifestations in human immunodeficiency virus infected patients: Morphological spectrum with CD4 correlation. Indian J Sex Transm Dis AIDS 2013; 34:89-94. [PMID: 24339458 DOI: 10.4103/0253-7184.120538] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND More than 90% of human immunodeficiency virus (HIV) infected patients develop skin lesions at some time throughout the course of the disease. Several skin diseases have proved to be sensitive and useful indicators of progression of HIV infection. Although these conditions may be seen in general healthy population, their occurrence in patients with acquired immunodeficiency syndrome is often atypical, more severe and explosive. AIMS The present study was carried out to categorize the skin lesions by histopathology using punch biopsy or cytology when feasible in HIV infected patients and to see the correlation for various skin lesions with CD4 counts. MATERIALS AND METHODS In total 110 known HIV positive patients with the symptomatic skin lesions, cytology and punch biopsy was correlated with CD4 counts. RESULTS Maximum patients were between 31 and 40 years. 53 (48.18%) patients had infectious and 37 (34.55%) patients had non-infectious lesions. Out of 110 patients, CD4 counts were available in 70 patients. The spectrum of various non-infectious and infectious lesions such as viral, bacterial, fungal, protozoa and their association with CD4 counts is discussed. CONCLUSIONS CD4 counts below 200 were associated with the maximum infectious lesions, whereas CD4 counts more than 350 showed more of the non-infectious lesions. Most common infectious lesion was Molluscum contagiosum. The most common non-infectious lesion was pruritic papular eruptions.
Collapse
Affiliation(s)
- Sanjay M Chawhan
- Department of Pathology, Government Medical College, Nagpur, Maharashtra, India
| | | | | |
Collapse
|
13
|
Gullo FP, Rossi SA, Sardi JDCO, Teodoro VLI, Mendes-Giannini MJS, Fusco-Almeida AM. Cryptococcosis: epidemiology, fungal resistance, and new alternatives for treatment. Eur J Clin Microbiol Infect Dis 2013; 32:1377-91. [PMID: 24141976 DOI: 10.1007/s10096-013-1915-8] [Citation(s) in RCA: 83] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Accepted: 06/11/2013] [Indexed: 10/26/2022]
Abstract
Cryptococcosis is an important systemic mycosis and the third most prevalent disease in human immunodeficiency virus (HIV)-positive individuals. The incidence of cryptococcosis is high among the 25 million people with HIV/acquired immunodeficiency syndrome (AIDS), with recent estimates indicating that there are one million cases of cryptococcal meningitis globally per year in AIDS patients. In Cryptococcus neoformans, resistance to azoles may be associated with alterations in the target enzyme encoded by the gene ERG11, lanosterol 14α-demethylase. These alterations are obtained through mutations, or by overexpressing the gene encoding. In addition, C. gattii and C. neoformans present a heteroresistance phenotype, which may be related to increased virulence. Other species beyond C. neoformans and C. gattii, such as C. laurentii, have been diagnosed mainly in patients with immunosuppression. Infections of C. albidus have been isolated in cats and marine mammals. Recent evidence suggests that the majority of infections produced by this pathogen are associated with biofilm growth, which is also related with increased resistance to antifungal agents. Therefore, there is a great need to search for alternative antifungal agents for these fungi. The search for new molecules is currently occurring from nanoparticle drugs of plant peptide origin. This article presents a brief review of the literature regarding the epidemiology of cryptococcosis, as well as fungal resistance and new alternatives for treatment.
Collapse
Affiliation(s)
- F P Gullo
- Faculty of Pharmaceutical Sciences of Araraquara, Department of Clinical Analysis, Laboratory of Clinical Mycology, Universidade Estadual Paulista (UNESP), R. Expedicionários do Brasil, 1621, 14801-902, Araraquara, São Paulo, Brazil
| | | | | | | | | | | |
Collapse
|
14
|
Ganiem AR, Dian S, Indriati A, Chaidir L, Wisaksana R, Sturm P, Melchers W, van der Ven A, Parwati I, van Crevel R. Cerebral toxoplasmosis mimicking subacute meningitis in HIV-infected patients; a cohort study from Indonesia. PLoS Negl Trop Dis 2013; 7:e1994. [PMID: 23326616 PMCID: PMC3542116 DOI: 10.1371/journal.pntd.0001994] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2012] [Accepted: 11/16/2012] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND HIV-associated subacute meningitis is mostly caused by tuberculosis or cryptococcosis, but often no etiology can be established. In the absence of CT or MRI of the brain, toxoplasmosis is generally not considered as part of the differential diagnosis. METHODOLOGY/PRINCIPAL FINDINGS We performed cerebrospinal fluid real time PCR and serological testing for Toxoplasma gondii in archived samples from a well-characterized cohort of 64 HIV-infected patients presenting with subacute meningitis in a referral hospital in Indonesia. Neuroradiology was only available for 6 patients. At time of presentation, patients mostly had newly diagnosed and advanced HIV infection (median CD4 count 22 cells/mL), with only 17.2% taking ART, and 9.4% PJP-prophylaxis. CSF PCR for T. Gondii was positive in 21 patients (32.8%). Circulating toxoplasma IgG was present in 77.2% of patients tested, including all in whom the PCR of CSF was positive for T. Gondii. Clinically, in the absence of neuroradiology, toxoplasmosis was difficult to distinguish from tuberculosis or cryptococcal meningitis, although CSF abnormalities were less pronounced. Mortality among patients with a positive CSF T. Gondii PCR was 81%, 2.16-fold higher (95% CI 1.04-4.47) compared to those with a negative PCR. CONCLUSIONS/SIGNIFICANCE Toxoplasmosis should be considered in HIV-infected patients with clinically suspected subacute meningitis in settings where neuroradiology is not available.
Collapse
Affiliation(s)
- A. Rizal Ganiem
- Department of Neurology, Hasan Sadikin Hospital, Bandung, Indonesia
| | - Sofiati Dian
- Department of Neurology, Hasan Sadikin Hospital, Bandung, Indonesia
| | - Agnes Indriati
- Department of Clinical Pathology, Hasan Sadikin Hospital, Bandung, Indonesia
| | - Lidya Chaidir
- Health Research Unit, Faculty of Medicine, Universitas Padjadjaran, Bandung, Indonesia
| | - Rudi Wisaksana
- Department of Internal Medicine, Hasan Sadikin Hospital, Bandung, Indonesia
| | - Patrick Sturm
- Department of Medical Microbiology, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Willem Melchers
- Department of Medical Microbiology, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Andre van der Ven
- Department of Medicine, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Ida Parwati
- Department of Clinical Pathology, Hasan Sadikin Hospital, Bandung, Indonesia
| | - Reinout van Crevel
- Department of Medicine, Radboud University Medical Centre, Nijmegen, The Netherlands
- * E-mail:
| |
Collapse
|
15
|
Chawhan SM, Bhat DM, Solanke SM. Dermatological manifestations in human immunodeficiency virus infected patients: Morphological spectrum with CD4 correlation. Indian J Sex Transm Dis AIDS 2013; 34. [PMID: 24339458 PMCID: PMC3841677 DOI: 10.4103/2589-0557.120538] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND More than 90% of human immunodeficiency virus (HIV) infected patients develop skin lesions at some time throughout the course of the disease. Several skin diseases have proved to be sensitive and useful indicators of progression of HIV infection. Although these conditions may be seen in general healthy population, their occurrence in patients with acquired immunodeficiency syndrome is often atypical, more severe and explosive. AIMS The present study was carried out to categorize the skin lesions by histopathology using punch biopsy or cytology when feasible in HIV infected patients and to see the correlation for various skin lesions with CD4 counts. MATERIALS AND METHODS In total 110 known HIV positive patients with the symptomatic skin lesions, cytology and punch biopsy was correlated with CD4 counts. RESULTS Maximum patients were between 31 and 40 years. 53 (48.18%) patients had infectious and 37 (34.55%) patients had non-infectious lesions. Out of 110 patients, CD4 counts were available in 70 patients. The spectrum of various non-infectious and infectious lesions such as viral, bacterial, fungal, protozoa and their association with CD4 counts is discussed. CONCLUSIONS CD4 counts below 200 were associated with the maximum infectious lesions, whereas CD4 counts more than 350 showed more of the non-infectious lesions. Most common infectious lesion was Molluscum contagiosum. The most common non-infectious lesion was pruritic papular eruptions.
Collapse
Affiliation(s)
- Sanjay M. Chawhan
- Department of Pathology, Government Medical College, Nagpur, Maharashtra, India,Address for correspondence: Dr. Sanjay M. Chawhan, Department of Pathology, Government Medical College and SSH, Nagpur, Maharashtra, India. E-mail:
| | - Dharitri M. Bhat
- Department of Pathology, Government Medical College, Nagpur, Maharashtra, India
| | - Seema M. Solanke
- Department of Pathology, Government Medical College, Nagpur, Maharashtra, India
| |
Collapse
|
16
|
Wong EB, Omar T, Setlhako GJ, Osih R, Feldman C, Murdoch DM, Martinson NA, Bangsberg DR, Venter WDF. Causes of death on antiretroviral therapy: a post-mortem study from South Africa. PLoS One 2012; 7:e47542. [PMID: 23094059 PMCID: PMC3472995 DOI: 10.1371/journal.pone.0047542] [Citation(s) in RCA: 105] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2012] [Accepted: 09/12/2012] [Indexed: 11/24/2022] Open
Abstract
Background Mortality in the first months of antiretroviral therapy (ART) is a significant clinical problem in sub-Saharan Africa. To date, no post-mortem study has investigated the causes of mortality in these patients. Methods HIV-positive adults who died as in-patients at a Johannesburg academic hospital underwent chart-review and ultrasound-guided needle autopsy for histological and microbiological examination of lung, liver, spleen, kidney, bone marrow, lymph node, skin and cerebrospinal fluid. A clinico-pathologic committee considered all available data and adjudicated immediate and contributing causes of death. Results Thirty-nine adults were enrolled: 14 pre-ART, 15 early-ART (7–90 days), and 10 late-ART (>90 days). Needle sampling yielded adequate specimen in 100% of kidney, skin, heart and cerebrospinal fluid samples, 97% of livers and lungs, 92% of bone marrows, 87% of spleens and 68% of lymph nodes. Mycobacterial infections were implicated in 69% of deaths (26 of 27 of these due to M. tuberculosis), bacterial infections in 33%, fungal infections in 21%, neoplasm in 26%, and non-infectious organ failure in 26%. Immune reconstitution inflammatory syndrome (IRIS) was implicated in 73% of early-ART deaths. Post-mortem investigations revealed previously undiagnosed causes of death in 49% of cases. Multiple pathologies were common with 62% of subjects with mycobacterial infection also having at least one other infectious or neoplastic cause of death. Conclusions Needle biopsy was efficient and yielded excellent pathology. The large majority of deaths in all three groups were caused by M. tuberculosis suggesting an urgent need for improved diagnosis and expedited treatment prior to and throughout the course of antiretroviral therapy. Complex, unrecognized co-morbidities pose an additional challenge.
Collapse
Affiliation(s)
- Emily B Wong
- Wits Reproductive Health and HIV Institute, University of the Witwatersrand, Johannesburg, South Africa.
| | | | | | | | | | | | | | | | | |
Collapse
|