Journal of Pure and Applied Microbiology最新文献

{"title":"Screening of Group B Streptococcal and Candida Infections in Antenatal Women Visiting a Tertiary Care Hospital and the Neonatal Outcome","authors":"Abraham Faby, M. Anuradha, R. Rachel, Saswati Tripathy, Sajeethakumari Raveendran","doi":"10.22207/jpam.18.1.01","DOIUrl":"https://doi.org/10.22207/jpam.18.1.01","url":null,"abstract":"Reproductive tract infections in antenatal women are frequently occurring public health concern affecting the quality of life in the infected women and further affects the neonatal outcome negatively. Vaginal infections are predominantly caused due to the disturbance in the normal vaginal microflora. Group B Streptococcus (GBS) is a major peritoneal pathogen leading to morbidity and mortality in both mother and neonates leading to complications like preterm labour, chorioamnionitis and Preterm rupture of membrane (PROM). Further, Vulvovaginal candidiasis (VVC) is a frequently encountered gynaecological disease causing morbidity in 3/4th of women at least once in their life span. It leads to infertility in non-pregnant women. It results in adverse pregnancy outcomes such as chorioamnionitis and congenital abnormalities in the neonates. The aim of this study is to screen for potential bacterial and yeast infections with focus on GBS and Candida infections and its neonatal outcome. Candida species and GBS were identified by routine culture-based tests. HiChrome agar was used for speciation of Candida species. CAMP test was performed for GBS; further identification was done using Streptococcal grouping kit. GBS was found in 15% of the antenatal women and Candida Species was found to be most common with an infection rate of 50%. Lower segment Cesarean section (LSCS) rate in GBS positive women was 60% and in Candida Non albicans positive women was found to be 65.38%. 33% of the neonates born to GBS positive mothers had respiratory distress. Infection in antenatal women negatively influenced the mode of delivery and the mean body weight of the neonates born to infected mothers were comparatively less.","PeriodicalId":16968,"journal":{"name":"Journal of Pure and Applied Microbiology","volume":"25 6","pages":""},"PeriodicalIF":0.8,"publicationDate":"2024-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139388471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Functional Characterization of the Tmg-4 Magnesium Transporter with the GQN Motif from Neurospora crassa","authors":"Sireesha Radarapu, Neelima Gorityala, Uday Kumar Banala, S. Sagurthi, Premsagar Korripally","doi":"10.22207/jpam.17.4.60","DOIUrl":"https://doi.org/10.22207/jpam.17.4.60","url":null,"abstract":"To unveil the physiological relevance of magnesium and its transport pathways in Neurospora crassa, the vegetative, asexual, and sexual phases of development were investigated. Notably, a regular rate of hyphal growth extension was observed in media without magnesium supplementation. Further, conidia and perithecia formation was completely abolished under the same conditions. By estimating the levels of mycelial cations, magnesium was identified as the 3rd most abundant ion and its transport was found to be mediated by four putative CorA magnesium transporters: Tmg-1, Tmg-2, Tmg-3, and Tmg-4. Among these, the Tmg-4 transporter encoded by the NCU07816.5 (tmg-4) gene possesses a GQN motif instead of the universally conserved GMN motif of CorA magnesium transporters. Phenotypic analysis of the knockout mutant strain, Δtmg-4, revealed stunted vegetative growth, acquired partial cobalt resistance, and reduced levels of mycelial magnesium compared to that of the wild type strain. Further, tmg-4 gene expression remained unchanged during vegetative development but was upregulated by three-fold in the sexual cycle. Collectively, these results validate tmg-4 and its encoded protein as functional novel variant in the CorA superfamily magnesium transporters of fungi.","PeriodicalId":16968,"journal":{"name":"Journal of Pure and Applied Microbiology","volume":"19 6","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138607084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bio Evaluation of Lantibiotic Nisin Loaded Polyvinyl Alcohol – Sodium Alginate Crosslinked Hydrogel As Novel Dental Temporary Filling Material","authors":"Mridula R. Chandran, R. Usha","doi":"10.22207/jpam.17.4.49","DOIUrl":"https://doi.org/10.22207/jpam.17.4.49","url":null,"abstract":"The incidence of oro-dental disorders has emerged as a serious threat to the healthcare sector owing to the increasing complexity of the oral microbiome. Significant advances in biomaterial research have led to the advent of a plethora of drug delivery systems including nanocarriers, dendrimers, hydrogels and other kinds of stimuli-responsive polymeric biomaterials. Anti-microbial peptides (AMPs) have engendered considerable interest in the past decades as potential alternatives to traditional disinfecting agents and also emerged as potent antibiofilm agents. Among the most viable approaches in targeted drug delivery, hydrogels incorporated with AMPs are emerging as bio-functional platforms yielding increased stability and bioavailability. The antibacterial and antibiofilm activities of Nisin are studied using microbiological methods followed by the synthesis of Nisin loaded PVA-Alginate hydrogel for dental treatment. The physicochemical characteristics of Nisin loaded hydrogel were done by swelling behavior, release kinetics assay, FTIR spectroscopic methods and cytotoxicity studies. Nisin showed antibacterial activity towards clinical isolates of drug-resistant bacteria and the antibiofilm and anti-adhesion studies demonstrated that Nisin could control the bacterial count in the test sample. The polymerization of Nisin into hydrogels was done and the physico-chemical characterization of Nisin loaded hydrogel network could be envisaged as a potential drug delivery platform for oral infections. Nisin loaded PVA-Alginate biocompatible hydrogel exhibited apparent swellable, flexible, nonhaemolytic materials and active antimicrobial and nontoxic materials. Physicochemical properties of these Nisin loaded PVA-Alginate biocompatible hydrogels have great potential in biomaterial-based drug delivery systems in controlling the growth and proliferation of major oro-dental pathogens. This could be exploited for the temporary biocompatible dental filling materials to treat the caries. Exploring potential nisin loaded hydrogel delivery systems will provide a brighter future of more friendly, effective and personalized treatment to deal with dental caries.","PeriodicalId":16968,"journal":{"name":"Journal of Pure and Applied Microbiology","volume":"117 43","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138607566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"GC-MS Characterization of Eupatorium odoratum (L.) Leaves Essential Oil and Evaluation of In vitro Antimicrobial and Antioxidant Activity","authors":"Enna Choudhary, Navneet Bithel, Tanuja Sharma, Priyanka Saini, M. Rajput","doi":"10.22207/jpam.17.4.54","DOIUrl":"https://doi.org/10.22207/jpam.17.4.54","url":null,"abstract":"The leaves essential oil of Eupatorium odoratum (L.) obtained by the hydro-distillation method was light yellowish in colour, having pungent aromatic fragrance with the yield of 0.010%. Fifteen secondary metabolites were identified via the GC-MS analysis of the essential oil and tau-Cadinol (20.10%) was found to be the major secondary metabolite in the essential oil followed by α Bisabolol (15.33%), cis-muurola-4 (14) 5- diene (10.79%), Isobornyl acetate (6.40%), and Isocaryophyllene (5.39%). The antimicrobial efficacy was investigated via agar well diffusion technique and essential oil was most effective against P. aeruginosa with inhibition zone 22.00±0.57 mm, which was followed by E. coli (19.00±0.57 mm), S. aureus (18.33±0.33 mm), K. pneumoniae (16.50±0.33 mm), and S. pyogenes (11.00±0.33 mm). MIC and MBC values were observed lowest against P. aeruginosa, i.e. 3.12µl/ml and 6.24µl/ml, respectively. Antioxidant activity of essential oil was investigated by DPPH and H2O2 scavenging assay and IC50 value was found very low, i.e. 10.58µl/ml and 11.76µl/ml, respectively, so the essential oil was considered as a potential antioxidant agent. The results validate scientifically the traditional utilization of leaves essential oil of E. odoratum in traditional medicinal system and confirmed that it can be used as modern phytomedicines as an antimicrobial as well as antioxidant agent.","PeriodicalId":16968,"journal":{"name":"Journal of Pure and Applied Microbiology","volume":"76 13","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138606370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comorbidities and their Impact on COVID-19 Severity","authors":"Quratulain Maqsood, Nazim Hussain, Mehvish Mumtaz, Abdul Wajid, A. Sumrin","doi":"10.22207/jpam.17.4.53","DOIUrl":"https://doi.org/10.22207/jpam.17.4.53","url":null,"abstract":"The current COVID-19 pandemic is caused by the novel SARS-CoV-2 coronavirus strain. Although SARS-CoV-2 infection can affect everyone, the kind and degree of infection and sickness vary widely between individuals and populations. It has been crucial since reported disease loads and case fatality rates vary greatly among countries. However, there are still uncertainties about the severity of the illness in certain people and, in other cases, the aetiology of a more severe illness. Various chronic conditions, such as diabetes, cardiovascular diseases, respiratory ailments, and immunodeficiency disorders, have been identified as significant risk factors for COVID-19. These comorbidities not only increase the susceptibility to contracting the virus but also exacerbate the severity of symptoms and the likelihood of adverse outcomes, including hospitalization, intensive care unit admission, and mortality. The objective of this article is to point out the proliferation of COVID-19 in relation to different diseases affecting the clinical outcome of COVID-19. The study included 1500 patients with various diseases such as HCV, HBV, kidney disease, heart disease, asthma, T.B., arthritis, smokers, and vaccinated or unvaccinated. Results showed that 22% of diabetic patients, 40% of heart patients, 40% of asthma patients, 26% of kidney patients, 25% of T.B patients, and 41% of smokers had high corona positive. Coronavirus positivity was found in 34% of vaccinated patients and 72% of non-vaccinated patients, with an overall calculated p-value of 0.0001 by ANOVA statistical analysis. The overall outcome of the results showed that the severity of Corona disease increased in relation to different diseases.","PeriodicalId":16968,"journal":{"name":"Journal of Pure and Applied Microbiology","volume":"114 7","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138607601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Probiotic Properties and Anti-inflammatory Activity of Bacillus spp. Isolated from Ethnically Fermented Soybean","authors":"Welfareson Khongriah, Ruchika Maurya, K. Kondepudi, Santa Ram Joshi","doi":"10.22207/jpam.17.4.50","DOIUrl":"https://doi.org/10.22207/jpam.17.4.50","url":null,"abstract":"Bacillus spp. probiotics used as feed additives can form spores and tolerate the harsh conditions of the human digestive system and are beneficial for the treatment of inflammatory bowel syndrome. Since reports on probiotics and anti-inflammatory properties of Bacillus spp. isolated from the fermented food of Northeast India have not been explored much. The present study focused on Bacillus spp. BN5, AY5, and AN8, possessing these desired properties. In the probiotics study, the isolates were screened for their tolerance to acid and bile salt, auto-aggregation, hydrophobicity, cholesterol assimilation, antibiotic resistance, and antagonistic properties. It was found that these isolates possessed the desirable probiotic traits. The Bacillus spp. culture and their supernatant were also screened for their ability to reduce LPS-induced inflammation in murine macrophage (RAW 264.7) cells. All the Bacillus spp. culture and their supernatant treatments were found to reduced the Nitric oxide (NO) production by LPS-induced cell lines. The supernatant of LPS-induced cell lines were also analyzed to measure the level of inflammatory cytokine production. It was found that the levels of TNF-α, IL-6, and IL-1β were reduced after co-treatment with LPS and Bacillus spp. culture or LPS and Bacillus spp. supernatant. Results suggested that the Bacillus spp. are potential probiotic candidates with anti-inflammatory properties.","PeriodicalId":16968,"journal":{"name":"Journal of Pure and Applied Microbiology","volume":"73 12","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138606657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Anti-Staphylococcus aureus Activity of the Aqueous Ethanolic Extract of Solenostemma argel Aerial Parts","authors":"M. Alkuwayti","doi":"10.22207/jpam.17.4.55","DOIUrl":"https://doi.org/10.22207/jpam.17.4.55","url":null,"abstract":"Solenostemma argel (Asclepiadaceae) is a beneficial folk medicine used to treat many diseases, including the kidney, liver, and stomach diseases. The aim of this study was to assess the anti-Staphylococcus aureus activity of an aqueous ethanolic extract of Solenostemma argel (AEESA) and identify its phenolic and volatile compounds using high-performance liquid chromatography (HPLC) and gas chromatography-mass spectroscopy (GC-MS). As revealed using the disc diffusion test and DNA cleavage analysis, S. argel extract was active against Staphylococcus aureus. The minimum inhibitory concentration (MIC) was 31.6 g/mL. Sixteen phenolic compounds of AEESA were analyzed using HPLC, wherein the phenolic compounds: pyrocatechol (9519.95 µg/g), ferulic acid (3221.41 µg/g), chlorogenic acid (3221.41 µg/g), and gallic acid (2730.85 µg/g) were the most abundant. Additionally, naringenin (2262.80µg/g) and quercetin (1750.25µg/g) were the major flavonoids. GC-MS analysis of AEESA revealed 30 volatile compounds, the major percentages of 9,12-octadecadienoic acid (z,z)-, methyl ester (33.44%), ascorbic acid 2,6-dihexadecanoate (7.22%), and butylated hydroxytoluene(5.46%), followed by 2-Pentadecanone, 6,10,14-trimethyl (4.77%), 2-Pentadecanone, 6,10,14-trimethyl (3.35%), Stigmasta-5,22-dien-3-ol, and acetate (3.Beta; 3.35%). The application of S. argel extract in reducing the growth of biofilms would subsequently diminish the development of antibiotic resistance and promote the future uses of plant extract components.","PeriodicalId":16968,"journal":{"name":"Journal of Pure and Applied Microbiology","volume":"116 2","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138607480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tuberculosis Diagnosis and Detection of Drug Resistance: A Comprehensive Updated Review","authors":"M. Tawfick, M. E. S. M. Badawy, M. H. Taleb, N. E. El Menofy","doi":"10.22207/jpam.17.4.56","DOIUrl":"https://doi.org/10.22207/jpam.17.4.56","url":null,"abstract":"Tuberculosis (TB) is a significant public health challenge, especially in developing nations. Developing a TB eradication strategy is hampered by the global health concern of drug-resistant (DR) TB. Effective patient treatment, preventing TB transfer and avoiding the upsurge of DR strains depend primarily on the timely and accurate identification of DR TB. Due to inadequate sensitivity, the necessity of trained laboratory personnel, the sluggish growth pattern of Mycobacterium bacilli in culture, and the small number of bacilli that are usually found in extrapulmonary TB samples, TB diagnosis is still tricky in clinical practice. Although mycobacterial culture is the gold standard to identify TB and determine drug resistance, it takes 2 to 8 weeks to develop. Despite their high cost, nucleic acid amplification tests (NAATs) and whole-genome sequencing (WGS) are the commonly employed molecular-based methods for diagnosing and identifying TB. The WHO suggested the GeneXpert MTB/RIF to identify TB and detect resistance to rifampicin. In comparison, numerous molecular techniques were developed, including allele-specific PCR (MAS-PCR), solid-phase hybridization, real-time PCR (RT-PCR) and droplet digital PCR-based technique (DDPCR). This manuscript is intended to overview the current approaches for the phenotypic and genotypic diagnosis of TB disease and identifying resistance to antitubercular drugs depending on recently published articles, WHO and CDC reports, and commercially available diagnostic tools.","PeriodicalId":16968,"journal":{"name":"Journal of Pure and Applied Microbiology","volume":"121 44","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138607075","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An Account of Hygienic Practices and Street Food Safety Around the Medical Colleges of Kolkata, India","authors":"Avishek Ghosh","doi":"10.22207/jpam.17.4.48","DOIUrl":"https://doi.org/10.22207/jpam.17.4.48","url":null,"abstract":"The safety of street food is an important aspect in the field of nutrition security. A cross sectional study was conducted among street food vendors around the medical colleges of Kolkata selected by simple random sampling. Data were collected by interviewing the selected food vendors with the predesigned schedule and observation. Microbiological analyses of food samples selected randomly from seventy five vendors were carried out. Food vendors unwilling or abstaining from the interview could not be selected in this current study. None of the food vendors used head cap or apron or hand gloves during preparation or selling of foods. Only 25.33% of food vendors covered the foods after preparation. Most of the vendors were cleaning their serving utensils in stagnant water of bucket. The continuous re-use of same stagnant water for washing non-disposable utensils led to deposition of food materials on them and this increased the chance of chemical and microbial contamination as well as enhanced the food borne intoxication. Half of the food samples were contaminated with the organisms causing Food Borne Diseases. Significant relationship was found between various hygienic practices and presence of probable food borne pathogenic bacteria. Approximately 81% of the food vendors did not have clean nails and nor did they use gloves for food service resulting in increased chances of microbial contamination in the foods. Also, the amount of food vendors using the leftover food of previous day was 44% meaning a significant decrease in food quality due to mixing of leftover foods. So, the hygienic practices of the food vendors around the medical colleges of Kolkata were very poor and foods served were contaminated.","PeriodicalId":16968,"journal":{"name":"Journal of Pure and Applied Microbiology","volume":"66 5","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138606531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Clinico Mycological Profile of Dermatophyte Infections at A Tertiary Care Hospital from South India","authors":"Pellakuru Preethi, Murali Narasimhan, Maheswary Datchanamoorthy, Hemamalini, Muthu Bharathi, L. Vajravelu","doi":"10.22207/jpam.17.4.58","DOIUrl":"https://doi.org/10.22207/jpam.17.4.58","url":null,"abstract":"The prevalence of Dermatophytosis is similar in several continents of the Asian country. The varied state of weather is favourable for mycosis that may lead to various clinical symptoms and infection spreads speedily if left untreated with time. The aim of the present study is to determine the clinical and mycological pattern of dermatophyte infections in patients arriving at our dermatology outpatient department and also to correlate the formal clinical diagnosis with KOH positivity and culture positivity. This descriptive observational study was conducted among 300 patients presenting with dermatophyte infections who came to the dermatology outpatient Department of SRM Medical College and research centre, Kattankulathur, Chengalpattu. The clinical specimens were put through direct microscopy by Potassium Hydroxide (KOH) mount and with the culture on Sabouraud’s Dextrose Agar (SDA). The study showed males were affected mostly and most of the participants were students. The common symptoms observed were Itching, Scaling and Discolouration. Commonly, patients had a primary diagnosis of Tinea corporis infection followed by T. cruris. Trichophyton mentagrophytes were the commonly isolated organism followed by Trichophyton rubrum and Trichophyton violaceum. This study indicates the need for personal hygiene and the disadvantage of as only few participants had zoophilic infections of Tinea species. These methods of diagnosing and identification will further aid in better patients management.","PeriodicalId":16968,"journal":{"name":"Journal of Pure and Applied Microbiology","volume":"113 26","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138607357","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}