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3.
J Travel Med ; 30(1)2023 02 18.
Article in English | MEDLINE | ID: mdl-36222148

ABSTRACT

OBJECTIVES: Neurocysticercosis (NCC) is a parasitic disease caused by the larval stage of the tapeworm Taenia solium. NCC mainly occurs in Africa, Latin America and South-East Asia and can cause a variety of clinical signs/symptoms. Although it is a rare disease in Europe, it should nonetheless be considered as a differential diagnosis. The aim of this study was to describe clinical characteristics and management of patients with NCC diagnosed and treated in Europe. METHODS: We conducted a systematic search of published and unpublished data on patients diagnosed with NCC in Europe (2000-2019) and extracted demographic, clinical and radiological information on each case, if available. RESULTS: Out of 293 identified NCC cases, 59% of patients presented initially with epileptic seizures (21% focal onset); 52% presented with headache and 54% had other neurological signs/symptoms. The majority of patients had a travel or migration history (76%), mostly from/to Latin America (38%), Africa (32%) or Asia (30%). Treatment varied largely depending on cyst location and number. The outcome was favorable in 90% of the cases. CONCLUSIONS: Management of NCC in Europe varied considerably but often had a good outcome. Travel and migration to and from areas endemic for T. solium will likely result in continued low prevalence of NCC in Europe. Therefore, training and guidance of clinicians is recommended for optimal patient management.


Subject(s)
Neurocysticercosis , Taenia solium , Animals , Humans , Neurocysticercosis/diagnosis , Neurocysticercosis/drug therapy , Neurocysticercosis/epidemiology , Retrospective Studies , Europe , Prevalence
4.
J Contemp Dent Pract ; 22(1): 73-79, 2021 Jan 01.
Article in English | MEDLINE | ID: mdl-34002713

ABSTRACT

AIM: This study aimed to compare the level of interleukin (IL)-10, IL-17, IL-27, IL-35, and IL-37 in the gingival crevicular fluid (GCF) and human plasma of subjects with periodontal disease. MATERIALS AND METHODS: In this cross-sectional study conducted over a 3-month period at a primary dental clinic in Malaysia, 45 participants were recruited via consecutive sampling and assigned into three groups, namely healthy periodontium group (n = 15), gingivitis group (n = 15), and periodontitis group (n = 15). Gingival crevicular fluid and plasma samples were collected from each participant. Enzyme-linked immunosorbent assay test was conducted to measure the concentration of IL-10, IL-17, IL-27, IL-35, and IL-37. Kruskal-Wallis H test was used to compare the interleukin levels between patient groups. RESULTS: In GCF samples, IL-17 level was the highest in the periodontitis group (p <0.05), while IL-27 was the lowest (p <0.05). Meanwhile, plasma levels of IL-27 and IL-37 were significantly lower (p <0.05) in the periodontitis group, but plasma IL-35 levels were observed to rise with increasing disease severity. CONCLUSION: There are reduced local and systemic levels of IL-27 in periodontitis patients. CLINICAL SIGNIFICANCE: Periodontal diseases exert both local and systemic effects, resulting in the destruction of the tooth-supporting structures and contributing to the systemic inflammatory burden. Some of the cytokines that were investigated in the current study, IL-17, IL-27, IL-35, and IL-37, can be potential biomarkers that warrant further longitudinal clinical studies to determine their usefulness as prognostic/diagnostic markers.


Subject(s)
Gingivitis , Interleukin-27 , Periodontal Diseases , Cross-Sectional Studies , Gingival Crevicular Fluid/chemistry , Humans , Interleukin-10 , Interleukin-17 , Interleukins/analysis , Malaysia
5.
PLoS Negl Trop Dis ; 15(3): e0009193, 2021 03.
Article in English | MEDLINE | ID: mdl-33788843

ABSTRACT

Single brain enhancing lesions (SEL) are the most common presentation of neurocysticercosis (NCC) observed on neuroimaging in people presenting with epileptic seizures not only on the Indian sub-continent and in travelers returning from cysticercosis-endemic regions, but are also present in other parts of the world. The aim of this study, which consisted of a systematic review (CRD42019087665), a meta-analysis and an expert group consultation, was to reach consensus on the best anti-seizure medication and anti-inflammatory treatment for individuals with SEL NCC. Standard literature review methods were used. The Cochrane risk of bias tool was used and random effects model meta-analyses were performed. The quality of the body of evidence was rated using GRADE tables. The expert committee included 12 gender and geographically balanced members and recommendations were reached by applying the GRADE framework for guideline development. The 1-1.5-year cumulative incidence of seizure recurrence, cyst resolution or calcification following anti-seizure medication (ASM) withdrawal was not statistically different between ASM of 6, 12 or 24 months. In contrast, in persons whose cyst calcified post treatment, longer ASM decreased seizure recurrence. The cumulative incidence ratio (CIR) 1-1.5 years after stopping ASM was 1.79 95% CI: (1.00, 3.20) for patients given 6 versus 24 months treatment. Anti-inflammatory treatment with corticosteroids in patients treated with ASM compared to patients treated with ASM only showed a statistically significant beneficial effect on seizure reduction (CIR 0.44, 95% CI 0.23, 0.85) and cyst resolution (CIR 1.37, 95%CI: 1.07, 1.75). Our results indicate that ASM in patients with SEL NCC whose cysts resolved can be withdrawn, while patients whose cysts calcified seem to benefit from prolonged anti-seizure medication. Additional corticosteroid treatment was found to have a beneficial effect both on seizure reduction and cyst resolution.


Subject(s)
Anti-Inflammatory Agents/therapeutic use , Anticonvulsants/therapeutic use , Neurocysticercosis/complications , Adrenal Cortex Hormones/administration & dosage , Adrenal Cortex Hormones/therapeutic use , Animals , Anti-Inflammatory Agents/administration & dosage , Anticonvulsants/administration & dosage , Brain Diseases/drug therapy , Brain Diseases/parasitology , Calcinosis/parasitology , Consensus , Epilepsy/drug therapy , Female , Humans , Male , Neurocysticercosis/diet therapy , Seizures/drug therapy , Taenia , Treatment Outcome
6.
Indian J Med Microbiol ; 38(3 & 4): 430-439, 2020.
Article in English | MEDLINE | ID: mdl-33154258

ABSTRACT

Introduction: Cryptosporidium is an intestinal parasite responsible for gastroenteritis. Conventional diagnosis of Cryptosporidium is made by microscopy. The most frequent molecular detection method for this parasite is polymerase chain reaction (PCR). The objective of the present study was to identify the novel DNA targets and development of PCR-based assays for the specific detection of two major human infecting species Cryptosporidium parvum and Cryptosporidium hominis. Methodology: Sensitive and specific SYBR green quantitative PCR (qPCR) and TaqMan qPCR assays were developed and validated at both diagnostic and analytical level using the new identified targets TU502HP-1 and TU502HP-2. Results: Assay validation results showed that the newly developed real-time PCR assays are 100% specific with a reliable limit of detection. Overall repeatability and reproducibility of these assays showed good quality results over intra- and inter-laboratory analysis. Conclusion: Novel target-based qPCR assays can be rapid an efficient tool for simultaneous detection of a C. parvum and C. hominis. These genes could also be utilized for the development of innovative DNA-based Point-of-Care test development.


Subject(s)
Cryptosporidiosis/diagnosis , Cryptosporidium parvum/genetics , Cryptosporidium/genetics , DNA, Protozoan/isolation & purification , Benzothiazoles , Cryptosporidiosis/parasitology , Cryptosporidium/classification , Cryptosporidium/isolation & purification , Cryptosporidium parvum/classification , Cryptosporidium parvum/isolation & purification , DNA, Protozoan/chemistry , Diamines , Feces/parasitology , Fluorescent Dyes , Humans , Multiplex Polymerase Chain Reaction , Polymerase Chain Reaction/methods , Quinolines , Real-Time Polymerase Chain Reaction , Sensitivity and Specificity
7.
Epidemiol Health ; 42: e2020034, 2020.
Article in English | MEDLINE | ID: mdl-32512665

ABSTRACT

OBJECTIVES: Regions with limited sanitation facilities have higher rates of infections with various enteric pathogens. It is therefore important to identify different hosts and their relative contribution to pathogen shedding into the environment, and to assess the subsequent health risks to humans. METHODS: In this study, human faecal (n=310), animal faecal (n=150), and environmental (soil) samples (n=40) were collected from the same locality and screened for selected enteric pathogens by immunochromatography and/or polymerase chain reaction. RESULTS: At least 1 microbial agent was detected in 49.0%, 44.7%, and 40.0% of the samples from human, animals, and soil, respectively. Among humans, rotavirus was predominantly detected (17.4%) followed by enteropathogenic Escherichia coli (EPEC) (15.4%), Shigella (13.8), and Shiga toxin-producing E. coli (STEC) (9.7%). Among animals, STEC was detected most frequently (28.0%), and EPEC was the major enteric pathogen detected in soil (30.0%). The detection rate of rotavirus was higher among younger children (≤2 years) than among older children. Single infections were more commonly detected than multiple infections in humans (p<0.01), unlike the observations in animal and soil samples. For diarrhoeagenic E. coli and Shigella, most of the human and animal isolates showed close relatedness, suggesting possible cross-infection between humans and domesticated animals in the area studied. CONCLUSIONS: The present study provides an improved understanding of the distribution of major enteric pathogens coexisting in humans and animals in the region, thereby suggesting a high potential for possible transmission among livestock and communities residing in the studied locality.


Subject(s)
Enteropathogenic Escherichia coli/isolation & purification , Feces/microbiology , Rotavirus/isolation & purification , Shiga-Toxigenic Escherichia coli/isolation & purification , Shigella/isolation & purification , Soil Microbiology , Animals , Animals, Domestic , Child, Preschool , Cross-Sectional Studies , Dysentery, Bacillary/epidemiology , Dysentery, Bacillary/transmission , Escherichia coli Infections/epidemiology , Escherichia coli Infections/transmission , Humans , India/epidemiology , Infant , Prevalence , Rotavirus Infections/epidemiology , Rotavirus Infections/transmission , Zoonoses
8.
Trop Med Int Health ; 25(5): 566-578, 2020 05.
Article in English | MEDLINE | ID: mdl-32083787

ABSTRACT

OBJECTIVES: To report on relevant national surveillance systems of (N)CC and taeniasis (the infection with the adult tapeworm) in the European Union/European Economic Area and to assess the magnitude of (N)CC occurrence by retrieving information on cases for the period 2000-2016. METHODS: (N)CC cases were retrieved via national reporting systems, a systematic literature search, contact with clinicians and a search for relevant 'International Statistical Classification of Diseases and Related Health Problems' (ICD)-based data. RESULTS: Mandatory notification systems for (N)CC were found in Hungary, Iceland and Poland. Ten cases were reported in Poland and none in Hungary and Iceland. Through the systematic literature review and information given by clinicians, 263 individual and 721 aggregated (N)CC cases from 19 European countries were identified. ICD-based data were obtained from five countries. From 2000 to 2016, a total of 3489 cases (N)CC cases were coded: 832 in Italy, eight in Latvia, 357 in Portugal, 2116 in Spain and 176 in Sweden. CONCLUSION: Despite being classified as a possible eradicable disease, (N)CC is still diagnosed across Europe, yet its true extent and impact remain unclear.


OBJECTIFS: Rapporter sur les systèmes nationaux de surveillance pertinents de la (neuro)cysticercose (N)CC et de la téniase (infection par le ténia adulte) dans l'Union européenne/l'Espace économique européen, et évaluer l'ampleur de l'occurrence de la (N)CC en reprenant des informations sur les cas durant la période 2000-2016. MÉTHODES: Les cas de (N)CC ont été repris à partir des systèmes nationaux de notification, une recherche systématique de la littérature, des contacts avec des cliniciens et une recherche de données pertinentes basées sur la 'Classification Statistique Internationale des Maladies et Problèmes de Santé Connexes' (ICD). RÉSULTATS: Des systèmes de notification obligatoires pour la (N)CC ont été trouvés en Hongrie, en Islande et en Pologne. Dix cas ont été rapportés en Pologne et aucun en Hongrie et en Islande. Grâce à la revue systématique de la littérature et aux informations fournies par les cliniciens, 263 cas individuels et 721 cas agrégés de (N)CC de 19 pays européens ont été identifiés. Des données ICD ont été obtenues de cinq pays. De 2000 à 2016, un total de 3489 cas de (N)CC ont été codés: 832 en Italie, 8 en Lettonie, 357 au Portugal, 2116 en Espagne et 176 en Suède. CONCLUSION: Bien qu'elle soit classée comme une maladie pouvant être éradiquée, la (N)CC est toujours diagnostiquée à travers l'Europe, mais sa véritable ampleur et son impact restent incertains .


Subject(s)
Cysticercosis/epidemiology , Mandatory Reporting , Population Surveillance , Cysticercosis/etiology , Europe/epidemiology , Humans
9.
J Glob Infect Dis ; 11(4): 147-152, 2019.
Article in English | MEDLINE | ID: mdl-31849435

ABSTRACT

BACKGROUND: Rotavirus (RVA) causes severe gastroenteritis in under-five children, and there are many diverse strains of the virus that are localized to different parts of the world. OBJECTIVES: To study the burden and molecular epidemiology of RVA causing gastroenteritis among children from Eastern India. MATERIALS AND METHODS: This hospital-based cross-sectional study included children under-five with gastroenteritis. Demographic and clinical parameters were recorded in a predesigned pro forma. Stool samples collected from these children were initially screened for RVA VP6 antigen by enzyme immunoassay (EIA). Each EIA-positive sample was then subjected to RNA extraction, followed by reverse transcription, and heminested multiplex polymerase chain reaction for genotyping of RVA strains. RESULTS: Of 320 included children, RVA was detected in 30.62% (98/320) cases by EIA. The highest incidence for RVA-positive cases (34.61%) was observed among children in the age group of 24-36 months, followed by 0-12 months (33.04%). Of the 97 completely typed samples, single genotype was detected in 85 (87.62%) samples with either G (VP7) or P (VP4) types. However, mixed genotypes were detected in 12 (11.21%) samples. G3P[8] (44.09%) was the most common genotype, followed by G1P[8] (32.65%), G2[P4] (5.10%), G1[P6] (3.06%), and G9[P4] (1.02%). CONCLUSIONS: The present study found RVA positivity in 30.62% of children with gastroenteritis, with the highest burden among 24-36 months old. The predominant genotypes were G1, G3, and P[8]. Further large-scale/multicentric studies should be conducted to document the diversity of circulating RVA genotypes in this region for giving inputs for vaccination strategy.

10.
J Tradit Complement Med ; 9(3): 206-214, 2019 Jul.
Article in English | MEDLINE | ID: mdl-31193983

ABSTRACT

Geraniol, an active constituent of rose and palmarosa essential oils, possesses several pharmacological properties, including antioxidant, antibacterial and antiulcer activity. Geraniol was therefore investigated for its antiulcer and anti-Helicobacter pylori activity in rats. Ulcers were induced by injecting acetic acid into the sub-serosal layer of the stomach followed by orogastric inoculation of H. pylori for 7 days. Geraniol (15 and 30 mg/kg), vehicle and a standard drug combination (amoxicillin, 50 mg/kg; clarithromycin, 25 mg/kg and omeprazole, 20 mg/kg) were administered twice daily for 14 days. All the parameters were measured at the end of treatment. The ulcer index was significantly (P < 0.05) lowered in geraniol and standard drug-treated rats as compared to the H. pylori control group (4.13 ±â€¯0.43). Treatment with geraniol (30 mg/kg) significantly (P < 0.01) increased the gastric pH along with a reduction in total acidity and gastric juice volume. Geraniol significantly (P < 0.05) attenuated the myeloperoxidase activity and augmented the total glutathione level in gastric mucosa. The extent of damage in the stomach was measured using a histopathological score. The score in H. pylori control, geraniol (30 mg/kg) and standard drugs was 9, 3.5 and 2.0 respectively. In the rapid urease test, treatment with geraniol (30 mg/kg) and the standard drugs produced a 33% and 67% cure respectively from H. pylori infection. Further, the reduction in bacterial load in the gastric mucosa was confirmed using modified Giemsa staining. Geraniol was observed to exhibit significant antiulcer and anti-H. pylori activity in a rodent model.

11.
Drug Deliv Transl Res ; 9(2): 434-443, 2019 04.
Article in English | MEDLINE | ID: mdl-29392681

ABSTRACT

The objectives of present research were to develop and characterize thermosensitive and mucoadhesive polymer-based sustained release moxifloxacin in situ gels for the treatment of periodontal diseases. Poloxamer- and chitosan-based in situ gels are in liquid form at room temperature and transform into gel once administered into periodontal pocket due to raise in temperature to 37 °C. Besides solution-to-gel characteristic of polymers, their mucoadhesive nature aids the gel to adhere to mucosa in periodontal pocket for prolonged time and releases the drug in sustained manner. These formulations were prepared using cold method and evaluated for pH, solution-gel temperature, syringeability and viscosity. In vitro drug release studies were conducted using dialysis membrane at 37 °C and 50 rpm. Antimicrobial studies carried out against Aggregatibacter actinomycetemcomitans (A.A.) and Streptococcus mutans (S. Mutans) using agar cup-plate method. The prepared formulations were clear and pH was at 7.01-7.40. The viscosity of formulations was found to be satisfactory. Among the all, formulations comprising of 21% poloxamer 407 and 2% poloxamer 188 (P5) and in combination with 0.5% HPMC (P6) as well as 2% chitosan and 70% ß-glycerophosphate (C6) demonstrated an ideal gelation temperature (33-37 °C) and sustained the drug release for 8 h. Formulations P6 and C6 showed promising antimicrobial efficacy with zone of inhibition of 27 mm for A.A. and 55 mm for S. Mutans. The developed sustained release in situ gel formulations could enhance patient's compliance by reducing the dosing frequency and also act as an alternative treatment to curb periodontitis.


Subject(s)
Anti-Bacterial Agents/administration & dosage , Moxifloxacin/administration & dosage , Polymers/administration & dosage , Adhesiveness , Aggregatibacter actinomycetemcomitans/drug effects , Aggregatibacter actinomycetemcomitans/growth & development , Anti-Bacterial Agents/chemistry , Delayed-Action Preparations/administration & dosage , Delayed-Action Preparations/chemistry , Drug Liberation , Gels , Glycerophosphates/administration & dosage , Glycerophosphates/chemistry , Mouth Mucosa , Moxifloxacin/chemistry , Periodontium , Polymers/chemistry , Solutions , Streptococcus mutans/drug effects , Streptococcus mutans/growth & development , Temperature , Viscosity
12.
Indian J Med Microbiol ; 37(3): 345-350, 2019.
Article in English | MEDLINE | ID: mdl-32003331

ABSTRACT

Introduction: Campylobacter-mediated diarrhoea is one of the major causes of gastroenteritis globally. A majority of the Campylobacter spp. that cause disease in humans have been isolated from animals. Faecal contamination of food and water is the identified frequent cause of human campylobacteriosis. Methodology: In the present study, faecal samples from patients with symptoms of acute diarrhoea (n = 310) and domestic animals including cows (n = 60), sheep (n = 45) and goats (n = 45) were collected from the same localities in the peri-urban Bhubaneswar city. Genomic DNA isolation followed by polymerase chain reaction and sequencing was employed to analyse Campylobacter spp.-positive samples. Results: Of the 460 faecal samples, 16.77% of human samples and 25.33% of animal samples were found to be positive for Campylobacter spp. Among animals, the isolation rate was highest in sheep followed by cows and goats with 9.33%, 8.66% and 7.33%, respectively. The highest number of Campylobacter-positive cases was diagnosed in infants of 2-5 years age. Concurrent infection of other pathogens in addition to Campylobacter spp. was frequently detected in the samples. Conclusion: The present study showed the incidence of Campylobacter infections in human and different animal species in and around Bhubaneswar, Odisha. The analysis suggested that domestic animals can be the potential sources for human campylobacteriosis in the region.


Subject(s)
Campylobacter/classification , Campylobacter/genetics , Feces/microbiology , Animals , Cattle , Diarrhea/microbiology , Humans , India , Phylogeny , Sheep
13.
Asian Pac J Trop Med ; 10(4): 332-340, 2017 Apr.
Article in English | MEDLINE | ID: mdl-28552103

ABSTRACT

Seizures due to neurocysticercosis (NCC) is a neglected human-to-human transmitted disorder and an emerging problem worldwide. A substantial portion of recent onset seizures is known to be attributed to NCC in Taenia solium (T. solium) endemic areas where populations which neither raise pigs nor eat pig meat are also at risk. High prevalence of NCC causing epilepsy has been reported in the underdeveloped areas of Southeast Asia (SEA) however, only fragmentary information on its incidence is available in countries like Malaysia. In Malaysia T. solium infection was previously thought to be infrequent due to Muslim population majority and the religious prohibition of consuming pork, but it is not totally absent. There is an evident lack of knowledge and awareness of the actual burden, routes of transmission, and the impact of NCC in this region. The problem is assumed to be more prevalent particularly in cities because of the frequent inflow of possibly T. solium infected individuals or carriers among those who migrate from neighboring endemic countries to Malaysia. The issue of imported cases that are likely to be emerging in Malaysia is highlighted here. An accurate quantification of regional burdens of epilepsy due to NCC in Malaysia is warranted considering the disease emergence in its neighboring countries. It is suggested that the importance of NCC be recognized through quantification of its burden, and also to collect epidemiological data for its subsequent elimination in line of World Health Organization's mission for control of cysticercosis as a neglected tropical disease. In this review the need as well as a strategy for neuro-care center screening of epilepsy cases, and various issues with possible explanations are discussed. It is also proposed that NCC be declared as a reportable disease which is one of the eradicable public health problems in SEA.

14.
Trop Parasitol ; 7(1): 8-17, 2017.
Article in English | MEDLINE | ID: mdl-28459010

ABSTRACT

Cryptosporidiosis is a gastrointestinal illness caused by the protozoan parasite Cryptosporidium species, which is a leading cause of diarrhea in a variety of vertebrate hosts. The primary mode of transmission is through oral routes; infections spread with the ingestion of oocysts by susceptible animals or humans. In humans, Cryptosporidium infections are commonly found in children and immunocompromised individuals. The small intestine is the most common primary site of infection in humans while extraintestinal cryptosporidiosis occurs in immunocompromised individuals affecting the biliary tract, lungs, or pancreas. Both innate and adaptive immune responses play a critical role in parasite clearance as evident from studies with experimental infection in mice. However, the cellular immune responses induced during human infections are poorly understood. In this article, we review the currently available information with regard to epidemiology, diagnosis, therapeutic interventions, and strategies being used to control cryptosporidiosis infection. Since cryptosporidiosis may spread through zoonotic mode, we emphasis on more epidemiological surveillance-based studies in developing countries with poor sanitation and hygiene. These epidemiological surveys must incorporate fecal source tracking measures to identify animal and human populations contributing significantly to the fecal burden in the community, as mitigation measures differ by host type.

15.
Gut Pathog ; 9: 16, 2017.
Article in English | MEDLINE | ID: mdl-28400860

ABSTRACT

BACKGROUND: There are multiple etiologies responsible for infectious gastroenteritis causing acute diarrhea which are often under diagnosed. Also acute diarrhea is one of the major causes of morbidity and mortality among children less than 5 years of age. METHODS: In our study, fecal samples (n = 130) were collected from children (<5 years) presenting with symptoms of acute diarrhea. Samples were screened for viral, bacterial, and parasitic etiologies. Rotavirus and Adenovirus were screened by immunochromatographic tests. Diarrheagenic Escherichia coli (EPEC, EHEC, STEC, EAEC, O157, O111), Shigella spp., Salmonella spp., Vibrio cholera, Cryptosporidium spp., and Giardia spp. were detected by gene-specific polymerase chain reaction. RESULTS: Escherichia coli was detected to be the major etiological agent (30.07%) followed by Rotavirus (26.15%), Shigella (23.84%), Adenovirus (4.61%), Cryptosporidium (3.07%), and Giardia (0.77%). Concurrent infections with two or more pathogens were observed in 44 of 130 (33.84%) cases with a predominant incidence particularly in <2-year-old children (65.90%) compared to children of 2-5 years age group (34.09%). An overall result showed significantly higher detection rates among children with diarrhea in both combinations of two as well as three infections concurrently (p = 0.004915 and 0.03917, respectively). CONCLUSION: Suspecting possible multiple infectious etiologies and diagnosis of the right causative agent(s) can aid in a better pharmacological management of acute childhood diarrhea. It is hypothesized that in cases with concurrent infections the etiological agents might be complementing each other's strategies of pathogenesis resulting in severe diarrhea that could be studied better in experimental infections.

16.
Parasitol Res ; 116(5): 1533-1544, 2017 May.
Article in English | MEDLINE | ID: mdl-28389892

ABSTRACT

Computational approaches to predict structure/function and other biological characteristics of proteins are becoming more common in comparison to the traditional methods in drug discovery. Cryptosporidiosis is a major zoonotic diarrheal disease particularly in children, which is caused primarily by Cryptosporidium hominis and Cryptosporidium parvum. Currently, there are no vaccines for cryptosporidiosis and recommended drugs are ineffective. With the availability of complete genome sequence of C. hominis, new targets have been recognized for the development of effective and better drugs and/or vaccines. We identified a unique hypothetical protein (TU502HP) in the C. hominis genome from the CryptoDB database. A three-dimensional model of the protein was generated using the Iterative Threading ASSEmbly Refinement server through an iterative threading method. Functional annotation and phylogenetic study of TU502HP protein revealed similarity with human transportin 3. The model is further subjected to a virtual screening study form the ZINC database compound library using the Dock Blaster server. A docking study through AutoDock software reported N-(3-chlorobenzyl)ethane-1,2-diamine as the best inhibitor in terms of docking score and binding energy. The reliability of the binding mode of the inhibitor is confirmed by a complex molecular dynamics simulation study using GROMACS software for 10 ns in the water environment. Furthermore, antigenic determinants of the protein were determined with the help of DNASTAR software. Our findings report a great potential in order to provide insights in the development of new drug(s) or vaccine(s) for treatment and prophylaxis of cryptosporidiosis among humans and animals.


Subject(s)
Cryptosporidiosis/drug therapy , Cryptosporidium/metabolism , Drug Discovery/methods , Protozoan Proteins/antagonists & inhibitors , Protozoan Proteins/metabolism , Animals , Base Sequence , Child , Cryptosporidiosis/diagnosis , Cryptosporidium/classification , Cryptosporidium/genetics , Genome, Protozoan/genetics , Humans , Molecular Docking Simulation , Molecular Dynamics Simulation , Phylogeny , Protein Structure, Secondary , Protozoan Proteins/genetics , Reproducibility of Results , Zoonoses/parasitology
17.
J Mater Sci Mater Med ; 28(3): 39, 2017 Mar.
Article in English | MEDLINE | ID: mdl-28144851

ABSTRACT

The objective of this study was to prepare periodontal gels using natural polymers such as badam gum, karaya gum and chitosan. These gels were tested for their physical and biochemical properties and assessed for their antibacterial activity against Aggregatibacter actinomycetemcomitans and Streptococcus mutans, two pathogens associated with periodontal disease. Badam gum, karaya gum and chitosan were used to prepare gels of varying concentrations. Moxifloxacin hydrochloride, a known antimicrobial drug was choosen in the present study and it was added to the above gels. The gels were then run through a battery of tests in order to determine their physical properties such as pH and viscosity. Diffusion studies were carried out on the gels containing the drug. Antimicrobial testing of the gels against various bacteria was then carried out to determine the effectiveness of the gels against these pathogens. The results showed that natural polymers can be used to produce gels. These gels do not have inherent antimicrobial properties against A. actinomycetemcomitans and S. mutans. However, they can be used as a transport vehicle to carry and release antimicrobial drugs.


Subject(s)
Aggregatibacter actinomycetemcomitans/drug effects , Gels/administration & dosage , Periodontal Diseases/drug therapy , Polymers/administration & dosage , Streptococcus mutans/drug effects , Administration, Oral , Anti-Infective Agents/chemistry , Biological Products/therapeutic use , Chitosan/chemistry , Diffusion , Fluoroquinolones/chemistry , Humans , Hydrogen-Ion Concentration , Karaya Gum/chemistry , Materials Testing , Moxifloxacin , Polymers/chemistry , Surface Properties , Viscosity
18.
Am J Trop Med Hyg ; 93(3): 596-600, 2015 Sep.
Article in English | MEDLINE | ID: mdl-26123963

ABSTRACT

Cryptosporidium parvum and Giardia lamblia are zoonotic enteric protozoa of significant health concern where sanitation, hygiene, and water supplies are inadequate. We examined 85 stool samples from diarrhea patients, 111 pooled fecal samples by species across seven domestic animal types, and water from tube wells (N = 207) and ponds (N = 94) across 60 villages in coastal Odisha, India, for Cryptosporidium oocysts and Giardia cysts to measure occurrence, concentration/shedding, and environmental loading rates. Oocysts/cysts were detected in 12% of diarrhea patients. Detection ranged from 0% to 35% for Cryptosporidium and 0% to 67% for Giardia across animal hosts. Animal loading estimates indicate the greatest contributors of environmental oocysts/cysts in the study region are cattle. Ponds were contaminated with both protozoa (oocysts: 37%, cysts: 74%), as were tube wells (oocysts: 10%, cysts: 14%). Future research should address the public health concern highlighted from these findings and investigate the role of domestic animals in diarrheal disease transmission in this and similar settings.


Subject(s)
Animals, Domestic/parasitology , Cryptosporidiosis/epidemiology , Giardiasis/epidemiology , Water Supply , Adolescent , Adult , Aged , Animals , Buffaloes/parasitology , Cattle , Cattle Diseases/epidemiology , Cattle Diseases/parasitology , Child , Child, Preschool , Cryptosporidium , Dog Diseases/epidemiology , Dog Diseases/parasitology , Dogs , Feces/parasitology , Female , Giardia , Giardiasis/veterinary , Goat Diseases/epidemiology , Goat Diseases/parasitology , Goats/parasitology , Humans , India/epidemiology , Infant , Male , Middle Aged , Oocysts , Rural Population/statistics & numerical data , Sheep , Sheep Diseases/epidemiology , Sheep Diseases/parasitology , Water Microbiology , Water Supply/standards , Young Adult
19.
J Clin Diagn Res ; 9(5): DC06-10, 2015 May.
Article in English | MEDLINE | ID: mdl-26155476

ABSTRACT

INTRODUCTION: Neurocysticercosis being a potential to human transmitted disease, is the major cause of seizures and a public health problem in tropical countries. Though India is known to be highly endemic, there are many provinces where reports are still unavailable thereby underestimating its actual burden. MATERIALS AND METHODS: Anti-Cysticercus IgG antibodies in sera from cases presenting with seizures were screened by ELISA in a preliminary study in Odisha state which is a province in Eastern coastal India that was never explored before. Patients presenting with recent onset of seizures within age group 5 to 50 years, either local residents of Odisha or inhabitants from other parts of the country living for at least one year period in the study area were included. RESULTS: The present study showed 43.75% cases with seizures to be confirmed neurocysticercosis (NCC) based on serology and brain imaging. However, statistically no association was established between anti-Cysticercus antibody detection and radio imaging characteristics (location, number of lesions, and stage). CONCLUSION: This is the first study in Odisha presenting a series of cases with serological evidence of exposure to the parasite along with imaging characteristics which was consistent with NCC. It is recommended that NCC must be considered for a differential diagnosis in each active epilepsy case irrespective of prior prevalence information in all unexplored provinces in India and other endemic regions; also a compulsory reporting is warranted in order to aid in quantifying its actual burden.

20.
J Clin Diagn Res ; 8(5): DC16-8, 2014 May.
Article in English | MEDLINE | ID: mdl-24995176

ABSTRACT

BACKGROUND: The appendix is a vestigial organ which is infiltrated by faecal material, microbes and parasites. The most important aetio-pathology of appendicitis is obstruction of its lumen, by a faecolith. This results from accumulation and inspissation of faecal matter around vegetable fibres. The cause for appendicitis is numerous and one among them is parasitic infestation. AIMS: To analyze the faecolith present in the appendectomy specimen for parasites and to compare the results in fresh and preserved specimens. MATERIALS AND METHODS: Patients with acute/chronic appendicitis were subjected for surgery and the appendectomy specimens were collected in saline and formalin suspensions, for preservation purposes. The lumen was washed with normal saline and contents were collected and wet mount preparations were examined under low and high power microscopy. RESULTS: Among 100 specimens 48 faecolith analyses proved to be positive for parasitic association, giving 48% positivity, which is quite high. The commonest isolate was followed by mixed infection. In our study we observed that saline preparations were easy for handling and we were also able to demonstrate the undistorted morphology of parasite better than formalin preserved specimens. CONCLUSION: This study reveals the importance of analyzing the appendectomy specimen for understanding the etiopathogenisis of appendicitis in spite of having a negative stool microscopy. A post surgical analysis of appendectomy specimen may surprise you with different etiological agents as confirmed by our study.

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