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1.
Pak J Med Sci ; 40(8): 1808-1812, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-39281230

RESUMO

Objective: This laboratory study evaluated the effect of Salvadora persica (S. persica) root extracts and Chlorhexidine Digluconate (CHX) on the antibacterial and surface hardness properties of glass ionomer cement (GIC). Methods: The in vitro experimental study was conducted at the Baqai Institute of Pharmaceutical Sciences of Baqai Medical University, Karachi, Pakistan, from October 2022 to March 2023. There were a total four experimental groups. The first group consisted of ethanol extract (GIC-SPEE) and second group consisted of hexane extract as (GIC-SPHE) both prepared from Salvadora persica root respectively, and mixed with liquid of GIC separately. The third group comprised chlorhexidine (GIC-CHX) that was also mixing into liquid portion of GIC and the last group was Control i.e. (cGIC). The GIC samples were prepared by using stainless steel metallic moulds with dimension (5mm x 2mm), following the manufacturer guidelines. Antibacterial activity against Streptococcus mutans was done by disc diffusion test (DDT), and surface hardness test was done by Vickers hardness tester. Statistical analysis was performed using One-Way ANOVA and Tukey's post hoc tests (p<0.05). Results: The antibacterial activity against S. mutans reported that the maximum zone of inhibition was obtained at 3 wt% by the GIC-SPEE, when compared with other experimental groups. For surface hardness, the highest mean and standard deviation and significant findings was reported by the group GIC-SPEE. Conclusions: Considering the outcome of this in vitro study, it can be concluded that the addition of 3 wt% GIC-SPEE increased the surface hardness and antibacterial activity against Streptococcus mutans.

2.
Pak J Med Sci ; 39(4): 994-998, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37492302

RESUMO

Objective: To find the incidence of various complications of therapeutic plasma exchange (TPE) in ICU admitted children and to determine their association with age, gender, blood group and diagnosis of the patients. Methods: In this observational study, data of 24 patients who underwent 125 sessions of TPE was collected from the Pediatric Intensive care unit (PICU) and Hematology department of The Children's Hospital, Lahore from December 2020 to November 2021. Age, gender, blood group, indications and complications observed during and after the TPE procedure were documented on a pre-designed proforma. The data was analyzed by using SPSS version 23. Quantitative variables were presented in the form of mean and standard deviation. Qualitative variables like gender, blood groups, indications and complications of plasmapheresis were presented as frequency and percentage. Chi square test was applied for comparison of variables. Results: Among the 24 patients, 45.8% were of age group five to ten years with mean age of 7.58 years± 2.04 years and male to female ratio of 0.84:1. Guillain-Barré syndrome (GBS) and Neuromyelitis Optica spectrum disorder (NMO-SD) were the most prevalent among the patients who underwent TPE. Most common complication was hypotension (44.9%), others were febrile reactions (11.6%), unstable vital signs (14.5%) and allergic reactions (24.6%). Blood group, clinical condition and diagnosis of the patient showed significant association with the incidence of TPE related complications. Conclusion: The majority of problems caused by TPE are considered to be minor. Sudden fall in blood pressure, pruritus, urticarial rash and fever are the common adverse consequences among pediatric patients. Blood group and diagnosis of the patient can determine the development of such complications during plasmapheresis procedure.

3.
J Sci Food Agric ; 101(13): 5429-5436, 2021 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-33683701

RESUMO

BACKGROUND: The study was conducted to evaluate the effects of biological and chemical additives on microbial community, fermentation characteristics, aerobic stability, and in vitro gas production of SuMu No. 2 elephant grass. RESULTS: Aerobic bacteria and yeast were not affected on days 5 and 7 but were significantly (P < 0.224) reduced on days 14, 30, and 60, whereas lactic acid and lactic acid bacteria were significantly (P > 0.001) higher in all ensiling days within all treatment groups. During the ensiling days, the pH, acetic acid, butyric acid, and yeast were decreased in all treatment groups, whereas the Lactobacillus plantarum group and L. plantarum + natamycin group were highly significantly (P > 0.001) decreased. During air exposure, the water-soluble carbohydrates, ammonia nitrogen, lactic acid, and acetic acid were not affected on days 1-4, whereas pH and aerobic bacteria (were significantly (P < 0.05) increased on days 2-4. The addition of Lactobacillus plantarum and natamycin increased the gas production, in vitro dry matter digestibility, and in vitro neutral detergent fiber of SuMu No. 2 elephant grass silages. CONCLUSIONS: The addition of biological and chemical additives, such as L. plantrum alone and the combination with natamycin, affected the undesirable microbial community, fermentation characteristics, aerobic stability, and in vitro gas of SuMu No. 2 elephant grass. © 2021 Society of Chemical Industry.


Assuntos
Bactérias/metabolismo , Gases/metabolismo , Microbiota , Pennisetum/microbiologia , Ácido Acético/análise , Ácido Acético/metabolismo , Aerobiose , Bactérias/classificação , Bactérias/genética , Bactérias/isolamento & purificação , Fermentação , Gases/análise , Ácido Láctico/análise , Ácido Láctico/metabolismo , Lactobacillus plantarum/metabolismo , Natamicina/análise , Natamicina/metabolismo , Pennisetum/química , Silagem/análise , Silagem/microbiologia
4.
J Pak Med Assoc ; 71(1(B)): 332-335, 2021 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-35157673

RESUMO

Polycystic ovary syndrome (PCOS) is an oligogenic condition characterised by hyperandrogenism, ovulatory dysfunction and polycystic ovarian morphology. Previously, European and Han Chinese populations identified different susceptibility loci, of which ERBB4 (rs1351592) was strongly associated with PCOS. Our study aimed to investigate the association of ERBB4 Single Nucleotide Polymorphism (SNP), rs1351592 with PCOS in Pakistani women of Hazara region. Fifty PCOS patients and 14 healthy women were recruited and SNP was replicated using ARMS-PCR and sequencing. The study showed that Luteinising Hormone (LH), Follicle Stimulating Hormone (FSH), and Testosterone (T) were significantly elevated in patients compared to controls (P <0.05). Overall, the frequency of G allele was higher than C allele and the SNP lacked significant association with PCOS. This is the first study demonstrating the association of ERBB4 SNP, rs1351592 with PCOS in Pakistani population. Further research using larger population size will help to estimate the role of ERBB4 SNP as potential biomarker for disease diagnosis.


Assuntos
Síndrome do Ovário Policístico , Estudos de Casos e Controles , Feminino , Estudos de Associação Genética , Predisposição Genética para Doença , Humanos , Paquistão , Síndrome do Ovário Policístico/epidemiologia , Síndrome do Ovário Policístico/genética , Polimorfismo de Nucleotídeo Único , Receptor ErbB-4/genética
5.
J Anim Physiol Anim Nutr (Berl) ; 104(3): 767-775, 2020 May.
Artigo em Inglês | MEDLINE | ID: mdl-31742797

RESUMO

The study investigated the potential effect of the microbial fermented feed utilization on physicochemical traits, antioxidant enzyme and trace mineral analysis in rabbit meat. A total of 72 six-week-old male rabbits were weighed and randomly divided into four groups (1) (SRKC) control; (2) (SRKP) Lactobacillus plantarum 1 × 106  cfu/g fresh weight (FW); (3) (SRKG) Pediococcus acidilactici 1 × 106 cfu/g FW and (4) (SRKPG) P. acidilactici + L. plantarum 1 × 106 cfu/g FW. Performance characteristic, weekly body weight, was positively (p < .05) enhanced, while daily feed intake (DFI) and feed convention ratio (FCR) were not influenced in treatments group as compared to untreated. The water, protein, water holding capacity (WHC) and dry matter (DM) concentration were positively (p < .05) influenced, while ash, pH, lightness, redness and yellowness were not influenced in treated group as compared to untreated. The concentration of glutathione peroxidase (Gpx), superoxide dismutase (SOD) and aspartate aminotransferase (AST) was positively (p < .05) influenced in treatments group as compared to control. Regarding trace minerals, copper (Cu), iron (Fe), manganese (Mn) and zinc (Zn) were positively (p > .05) reduced in treated group as compared to untreated. It is concluded that the addition of lactic acid bacteria (L. plantarum and P. acidilactici) in Hybrid pennisetum silage had a constructive influence on rabbit health performance and meat biochemistry.


Assuntos
Ração Animal/análise , Antioxidantes/metabolismo , Dieta/veterinária , Manipulação de Alimentos , Carne/análise , Oligoelementos/química , Animais , Fermentação , Masculino , Carne/normas , Músculo Esquelético/química , Músculo Esquelético/metabolismo , Coelhos
6.
Pak J Med Sci ; 36(3): 382-386, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32292438

RESUMO

OBJECTIVE: To determine the patterns of maternal nutrition status by using mid upper arm circumference (MUAC) and to examine the association of maternal nutritional status with the nutritional status of malnourished children under two years of age. METHODS: Descriptive study conducted at the Department of Pediatric Medicine of the Children's Hospital, Lahore from January 2017 to March 2018. A total of 227 mother accompanying their children admitted for nutritional rehabilitation were included. Demographics of participants along with MUAC of every mother was taken. Data analysis was done by SPSS 22. RESULTS: Mean maternal age was 28.29±5.30 years and mean age of children was 9.22 ± 6.05 months. Mean maternal MUAC was 25.53±3.63 cm. Normal nutrition was present in only 70 (31%), 35 (15.4%) had moderate to severe under nutrition and 68 (30%) were overweight and 17 (7.5%) were obese. Maternal illiteracy was common 150 (66%) and 203 (89%) belong to poor social class. Majority 150 (75%) children had <-3SD WHZ score. Only 42 (18.5%) children were exclusively breast fed. Maternal malnutrition was significantly associated with severity of child's undernutrition (p=0.045) and low rates of exclusive breast feeding practices (p=0.049). CONCLUSION: Malnutrition, in the form of both under nutrition and obesity is prevalent in mothers of malnourished children belonging to lower social class. Maternal illiteracy and low income are the major contributor in maternal malnutrition which in turn has an impact on child nutrition and breast feeding practices.

7.
Reprod Domest Anim ; 54(10): 1348-1356, 2019 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-31336393

RESUMO

The aim of the current study was to evaluate the effect of dietary supplementation of Pinus ponderosa leaves (pine leaves) and α-tocopherol acetate (vitamin E) powder on male reproductive system, serum metabolites and carcass characteristics of Japanese quails. A total of 360-day-old male quails were purchased from the open market and kept at poultry shed for ninety-four days. After ten days of adaptation, all quails were randomly assigned into 4 groups, control (IC); supplemented with α-tocopherol acetate (IE) at the rate of 150 mg/L; Pinus ponderosa leaves (IP) at the rate of 150 mg/L; and 70 mg α-tocopherol acetate and 70 mg Pinus ponderosa leaves (IEP). Pinus ponderosa leaves and α-tocopherol acetate supplementation had not significantly (p > .05) effected on final body weight gain, feed intake and feed conversion ratio of quails. The high-density lipoprotein cholesterol (HDLC) and total cholesterol (TC) were significantly (p > .05) affected by IE and IP groups as compared to IC and IEP groups. Triglyceride (TG), glutathione peroxidase (GPx) and superoxide dismutase (SOD) significantly (p < .05) increased in all treatment groups except for the IC group. Aspartate transaminase (AST) significantly (p > .05) decreased in treatment groups as compared to control group. Overall, the mineral levels significantly (p < .05) increased in treatment groups as compared to control. Cloacal gland index values, the quantity of foam production and testis weight were significantly (p < .05) increased in treatment groups. It was concluded that the supplementation of Pinus ponderosa leaves and α-tocopherol acetate improved the testis weight, foam production, serum antioxidant enzymes and mineral level especially zinc in Japanese quail considered an indicative characteristic of higher sperm production rate and improved sexual activity. Further, higher gametogenesis rate, sperm production or reproductive behaviour including different hormonal level will be analysed in future study.


Assuntos
Coturnix/fisiologia , Dieta/veterinária , Pinus ponderosa , alfa-Tocoferol/administração & dosagem , Ração Animal/análise , Animais , Antioxidantes/análise , Colesterol/sangue , Genitália Masculina/efeitos dos fármacos , Masculino , Minerais/análise , Tamanho do Órgão/efeitos dos fármacos , Folhas de Planta , Testículo/efeitos dos fármacos
8.
Pak J Med Sci ; 35(5): 1233-1237, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31488984

RESUMO

OBJECTIVE: To determine the prognostic factors and outcome of tetanus in children of post-neonatal age admitted in the intensive care unit (ICU) of a tertiary care hospital. METHODS: This prospective cross sectional study, carried out in the Pediatric ICU of The Children's Hospital Lahore from Jan 2013 to March 2017. Children of both genders with age range of two months to 16 years diagnosed clinically as tetanus were included. All 132 patients were scrutinized for all possible risk factors, need for mechanical ventilation and outcome. Data was analyzed by SPSS version 20. RESULTS: Mean age of children was 7.5±3.4 years with male predominance (70.5%). Only (38.6%) received three doses of vaccination but none had booster dose. Trauma (43.2%) encompassed maximum predisposing factor followed by ear or nose prick and ear discharge. Mean duration of ICU stay was 20±13.3 days. Mortality rate was (17.4%). Ventilator support was given to (78.8%). Neurological outcome was normal in (82.6%). Trauma, ear or nose prick in girls and ear discharge were significantly associated with poor outcome and death with p-value of <0.001, 0.011 and <0.001 respectively. Other factors associated with poor outcome were need for mechanical ventilation and neurological impairment with p-value of 0.001 and <0.001 respectively. CONCLUSION: Tetanus is causing our children to suffer from devastating disease. Vaccination status is not satisfactory and along with trauma, ear discharge and ear or nose prick are identifiable risk factors. To combat these issues large scale vaccination and booster doses remains promising option.

9.
Pak J Pharm Sci ; 32(3): 1097-1101, 2019 May.
Artigo em Inglês | MEDLINE | ID: mdl-31278725

RESUMO

Aflatoxin M1 (AFM1) is a hydroxylated metabolite of Aflatoxin B1 (AFB1). It appears in milk, when lactating animals consume AFB1 contaminated feed. It is carcinogenic and teratogenic in nature. Present study was planned to determine levels of AFM1 in raw and processed milk. For this, a total of five hundred and seventy milk samples (raw = 340 and processed = 230) were collected from Punjab (province of Pakistan). Processed milk included ultra-heat treated (UHT) (n=105), pasteurized (n=65), dried (n=40) and condensed milk (n=20). Concentration of AFM1 was quantified by direct competitive ELISA technique. Analysis revealed 100 percent incidence of AFM1 in UHT and pasteurized milk with a mean of 0.35±0.28ng/ml and 0.11±0.03ng/ml respectively. However, 86.66% raw milk samples were tainted with AFM1 with mean of 0.52±0.42ng/ml and 66.66% of dried milk samples with mean of 0.03±0.02ng/ml. However, none of the condensed milk sample was found positive. Data of raw milk contamination was further computed for seasonal variation. Highest prevalence (100%) was observed during autumn season followed by winter (81.81%), summer (80%) and spring season (62.06%) respectively. Furthermore, all mean values except raw milk were below the FDA legislation. Study results indicate the possible adverse effects on health of people of Pakistan. Good agriculture practices (GAP) and regular screening of raw materials of animal feed prior to supplying may help to control AFM1 levels in milk.


Assuntos
Aflatoxina M1/análise , Contaminação de Alimentos/análise , Leite/química , Animais , Manipulação de Alimentos , Paquistão , Pasteurização , Alimentos Crus/análise , Estações do Ano
10.
J Pak Med Assoc ; 68(10): 1517-1521, 2018 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-30317353

RESUMO

Postoperative wound infections are the infections of the operating site within thirty days after surgery. The infections that develop after surgery are a major problem throughout the world leading to, increased morbidity and mortality. This study was carried out to determine the prevalence of bacterial pathogens causing wound infection in the surgical wards and to determine the antimicrobial sensitivity patterns of the isolated bacteria. A total of 250 wound samples were collected over a period of 6 months from July-December, 2016. The pathogenic bacteria were isolated, identified and their antibiotic susceptibility was determined through disc diffusion method. Among 250 cases, 210 (84%) were culture positive for bacterial pathogens, while 40 (16%) were bacteriologically sterile (Negative). Rate of infection was high in males (55.6%) than females (44.4%). The predominant isolates were E.coli 55 (26.19%), followed by S.aureus 51 (24.28%), Pseudomonas spp. 43(20.47%), S.aureus MRSA 21 (10%), Proteus Marbillis 15 (7.14%), E.coli ESBL producer was 8 (3.81%), Acinetobacter 7 (3.33%) Proteus valgaris 5 (2.38%), b-Streptococci 3 (1.43%) and Klebsella pneumonia were the least, 2 (0.95%). Linezolid, Vancomycin, Amoxycillin, Cefoperazone and Meropenem are the most effective antibiotics for treating post-surgical wound infections.


Assuntos
Antibacterianos/uso terapêutico , Bactérias/isolamento & purificação , Resistência Microbiana a Medicamentos/efeitos dos fármacos , Infecção da Ferida Cirúrgica/tratamento farmacológico , Centros de Atenção Terciária/estatística & dados numéricos , Estudos Transversais , Feminino , Seguimentos , Humanos , Incidência , Masculino , Testes de Sensibilidade Microbiana , Paquistão/epidemiologia , Estudos Retrospectivos , Infecção da Ferida Cirúrgica/epidemiologia , Infecção da Ferida Cirúrgica/microbiologia
11.
Cent Eur J Immunol ; 43(1): 18-25, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29731689

RESUMO

The human serum is a vital component of the innate immunity of the host that acts as the first line of defence against invading pathogens. A key player in serum-mediated innate immune defence is a system of more than 35 proteins, collectively named as the complement system. After exposure of the pathogen, these proteins are activated in a cascade manner, ultimately forming a membrane attack complex (MAC) on the surface of the pathogen that directly lyses the bacterial cell. Formation of the MAC can be demonstrated in vitro by using serum bactericidal assay (SBA) that works in the absence of cellular components of blood after incubating the serum along with bacteria. Here, we describe the age-related differences in the bactericidal activity of human serum against Pseudomonas aeruginosa, an opportunistic human pathogen causing an array of hospital and community-acquired infections. We demonstrate that adult sera were highly effective in the in vitro killing of Pseudomonas aeruginosa as compared to children and the elderly (p < 0.0001). Sera from children were seriously compromised in the killing P. aeruginosa, whereas elderly sera showed a reduced level of killing. Data revealed a positive correlation between age and serum-killing with higher coefficient of determination values of 0.34, 0.27, and 0.58 and p values of < 0.0001, < 0.001, and < 0.0001, respectively, after 60, 90, and 120 minutes of incubation. Hence, our study highlights the age-related difference in the bactericidal activity of human sera. We conclude that sera of children are totally compromised, whereas elderly sera are only partially compromised, in the killing of P. aeruginosa.

12.
Plant Cell Environ ; 38(2): 375-84, 2015 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-24393051

RESUMO

The cell wall forms the first line of interaction between the plant and the external environment. Based on the observation that ascorbate-deficient vtc mutants of Arabidopsis thaliana have increased cell wall peroxidase activity, the cell wall glycoproteome of vtc2-2 was investigated. Glycoproteins were purified from fully expanded leaves by Concanavalin A affinity chromatography and analysed by liquid chromatography quadrupole time-of-flight mass spectrometry. This procedure identified 63 proteins with predicted glycosylation sites and cell wall localization. Of these, 11 proteins were differentially expressed between vtc2-2 and wild type. In particular, PRX33/34 were identified as contributing to increased peroxidase activity in response to ascorbate deficiency. This is the same peroxidase previously shown to contribute to hydrogen peroxide generation and pathogen resistance. Three fasciclin-like arabinogalactan proteins (FLA1, 2 and 8) had lower abundance in vtc2-2. Inspection of published microarray data shows that these also have lower gene expression in vtc1 and vtc2-1 and are decreased in expression by pathogen challenge and oxidative stresses. Ascorbate deficiency therefore impacts expression of cell wall proteins involved in pathogen responses and these presumably contribute to the increased resistance of vtc mutants to biotrophic pathogens.


Assuntos
Arabidopsis/metabolismo , Ácido Ascórbico/metabolismo , Parede Celular/metabolismo , Glicoproteínas/metabolismo , Folhas de Planta/citologia , Folhas de Planta/metabolismo , Proteoma/metabolismo , Sequência de Aminoácidos , Arabidopsis/citologia , Arabidopsis/efeitos da radiação , Proteínas de Arabidopsis/química , Proteínas de Arabidopsis/metabolismo , Parede Celular/efeitos da radiação , Glicoproteínas/química , Hidroxiprolina/metabolismo , Luz , Dados de Sequência Molecular , Mutação/genética , Peptídeos/química , Peptídeos/metabolismo , Peroxidases/metabolismo , Folhas de Planta/efeitos da radiação , Transporte Proteico/efeitos da radiação , Proteoma/química , Alinhamento de Sequência , Frações Subcelulares/metabolismo , Frações Subcelulares/efeitos da radiação
14.
Am J Trop Med Hyg ; 111(3): 682-693, 2024 Sep 04.
Artigo em Inglês | MEDLINE | ID: mdl-38955190

RESUMO

Diarrheal disease is the second leading cause of death worldwide in children under 5 years old, after pneumonia. Fortunately, diarrhea is a preventable disease that can be avoided by implementing basic home management strategies. Mothers are essential to its management and prevention; therefore, this study assessed the knowledge, attitudes, and practices of mothers in Pakistan related to diarrheal disease prevention and management. The study was conducted using a cross-sectional design in three cities of Pakistan from September 2022 to December 2022. A questionnaire was used to collect data on mothers' sociodemographic characteristics and their knowledge, attitudes, and practices related to the prevention and management of diarrheal diseases. A total of 356 mothers (81.7% of them were housewives, and 58.4% were 25-34 years old) participated in the study. Data were analyzed using descriptive statistics and tests of association. Significant associations were found between mothers' income, education, and ethnicity and their knowledge, attitudes, and practices regarding the prevention and management of diarrheal diseases (P <0.05). However, no significant association was found between the other variables. The knowledge and attitudes of the mothers regarding the prevention and management of diarrhea were satisfactory; however, their prevention-related practices and home-based management were unsatisfactory. Therefore, community education, formation of health and hygiene committees, and dissemination of user-friendly information are crucial for creating awareness about the prevention and management of diarrheal diseases. These measures can help improve the practices of mothers and reduce the incidence of diarrheal diseases in Pakistan.


Assuntos
Diarreia , Conhecimentos, Atitudes e Prática em Saúde , Mães , Humanos , Paquistão/epidemiologia , Estudos Transversais , Diarreia/prevenção & controle , Diarreia/epidemiologia , Mães/psicologia , Feminino , Adulto , Inquéritos e Questionários , Pré-Escolar , Masculino , Adulto Jovem , Lactente , Pessoa de Meia-Idade
15.
J Enzyme Inhib Med Chem ; 28(6): 1113-28, 2013 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-23046385

RESUMO

The plant-derived terpenoids are considered to be the most potent anticancer, anti-inflammatory and anticarcinogenic compounds known. Enzymatic biotransformation is a very useful approach to expand the chemical diversity of natural products. Recent enzymatic biotransformation studies on terpenoids have resulted in the isolation of novel compounds. 14-hydroxy methyl caryophyllene oxide produced from caryophyllene oxide showed a potent inhibitory activity against the butyryl cholinesterase enzyme, and was found to be more potent than parent caryophyllene oxide. The metabolites 3ß,7ß-dihydroxy-11-oxo-olean-12-en-30-oic acid, betulin, betulonic acid, argentatin A, incanilin, 18ß glycyrrhetinic acid, 3,11-dioxo-olean-12-en-30-oic acid produced from 18ß glycyrrhetinic acid were screened against the enzyme lipoxygenase. 3,11-Dioxo-olean-12-en-30-oic acid, was found to be more active than the parent compound. The metabolites 3ß-hydroxy sclareol 18α-hydroxy sclareol, 6α,18α-dihydroxy sclareol, 11S,18α-dihydroxy sclareol, and 1ß-hydroxy sclareol and 11S,18α-dihydroxy sclareol produced from sclareol were screened for antibacterial activity. 1ß-Hydroxy sclareol was found to be more active than parent sclareol. There are several reports on natural product enzymatic biotransformation, but few have been conducted on terpenes. This review summarizes the classification, advantages and agents of enzymatic transformation and examines the potential role of new enzymatically transformed terpenoids and their derivatives in the chemoprevention and treatment of other diseases.


Assuntos
Produtos Biológicos/metabolismo , Produtos Biológicos/farmacologia , Butirilcolinesterase/metabolismo , Inibidores Enzimáticos/metabolismo , Inibidores Enzimáticos/farmacologia , Lipoxigenase/metabolismo , Terpenos/metabolismo , Terpenos/farmacologia , Animais , Produtos Biológicos/química , Produtos Biológicos/isolamento & purificação , Biotransformação , Inibidores Enzimáticos/química , Inibidores Enzimáticos/isolamento & purificação , Humanos , Conformação Molecular , Relação Estrutura-Atividade , Terpenos/química , Terpenos/isolamento & purificação , Terpenos/uso terapêutico
16.
Plant Cell Environ ; 35(2): 388-404, 2012 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-21631536

RESUMO

Ascorbate and anthocyanins act as photoprotectants during exposure to high light (HL). They accumulate in Arabidopsis leaves in response to HL on a similar timescale, suggesting a potential relationship between them. Flavonoids and related metabolites were identified and profiled by liquid chromatography-tandem mass spectrometry (LC-MS/MS). The ascorbate-deficient mutants vtc1, vtc2 and vtc3 accumulated less anthocyanin than wild-type (WT) during HL acclimation. In contrast, kaempferol glycoside accumulation was less affected by light and not decreased by ascorbate deficiency, while sinapoyl malate levels decreased during HL acclimation. Comparison of six Arabidopsis ecotypes showed a positive correlation between ascorbate and anthocyanin accumulation in HL. mRNA-Seq analysis showed that all flavonoid biosynthesis transcripts were increased by HL acclimation in WT. RT-PCR analysis showed that vtc1 and vtc2 were impaired in HL induction of transcripts of anthocyanin biosynthesis enzymes, and the transcription factors PAP1, GL3 and EGL3 that activate the pathway. Abscisic acid (ABA) and jasmonic acid (JA), hormones that could affect anthocyanin accumulation, were unaffected in vtc mutants. It is concluded that HL induction of anthocyanin synthesis involves a redox-sensitive process upstream of the known transcription factors. Because anthocyanins accumulate in preference to kaempferol glycosides and sinapoyl malate in HL, they might have specific properties that make them useful in HL acclimation.


Assuntos
Antocianinas/metabolismo , Proteínas de Arabidopsis/genética , Arabidopsis/fisiologia , Ácido Ascórbico/metabolismo , Regulação da Expressão Gênica de Plantas/genética , Ácido Abscísico/metabolismo , Aclimatação , Arabidopsis/química , Arabidopsis/genética , Arabidopsis/efeitos da radiação , Proteínas de Arabidopsis/metabolismo , Ácido Ascórbico/análise , Ciclopentanos/metabolismo , Ecótipo , Regulação da Expressão Gênica de Plantas/efeitos da radiação , Glicosídeos/metabolismo , Quempferóis/metabolismo , Luz , Malatos/metabolismo , Mutação , Oxirredução , Estresse Oxidativo , Oxilipinas/metabolismo , Proteínas Associadas a Pancreatite , Fenilpropionatos/metabolismo , Reguladores de Crescimento de Plantas/metabolismo , Folhas de Planta/genética , Folhas de Planta/metabolismo , Folhas de Planta/efeitos da radiação , Fatores de Tempo , Fatores de Transcrição/genética , Fatores de Transcrição/metabolismo
17.
PLoS One ; 17(7): e0269859, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35802622

RESUMO

BACKGROUND: Cryptosporidium spp. is recognized as an opportunistic zoonotic parasite that infects humans as well as wild and domestic animals. This enteric protozoan is a major cause of diarrhea in humans and animals and often result in death due to severe dehydration. The present study was designed to investigate the prevalence, identification of various risk factors and evaluation of sensitivity of the two diagnostic techniques for rapid and correct detection of Cryptosporidium infection in diarrheic sheep in Pakistan. METHODS: A total of 360 fecal samples were collected and processed for detection of Cryptosporidium infection after proper preservation. These samples were properly stained with modified Ziehl-Neelsen acid staining and then examined under simple microscope at 100x magnification for confirmation of Cryptosporidium oocysts. The same samples were again processed through simple PCR for confirmation of the Cryptosporidium spp. RESULTS: The age wise prevalence was detected through simple microscopy and PCR. We found highest prevalence at the age of ≤1 year followed by 1-2 years of age while the lowest prevalence was recorded at the age of ≥ 2-3 years of sheep and found significant difference between different ages (P<0.05). The sex wise prevalence showed the highest prevalence in male (♂) animals detected compared to female (♀). The overall prevalence was detected 27.08% and 18.80% through PCR and simple microscopy, respectively, and significant difference between two diagnostic techniques were observed (P<0.05). Considering the seasonality, the highest prevalence was recorded through simple microscopy in autumn, summer, and spring, while the lowest in winter. These results were confirmed through PCR. CONCLUSION: It was concluded that molecular detection is the most efficient, specific and sensitive technique for detection of Cryptosporidium infection than simple microscopy. Moreover sheep is the major potential source of infection to other wild and domestic animals including humans.


Assuntos
Criptosporidiose , Cryptosporidium , Animais , Animais Domésticos , Criptosporidiose/diagnóstico , Criptosporidiose/epidemiologia , Criptosporidiose/parasitologia , Cryptosporidium/genética , Fezes/parasitologia , Feminino , Masculino , Paquistão/epidemiologia , Prevalência , Fatores de Risco , Ovinos
18.
J Enzyme Inhib Med Chem ; 26(5): 616-42, 2011 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-21417964

RESUMO

Medicinal plants are becoming an important research area for novel and bioactive molecules for drug discovery. Novel therapeutic strategies and agents are urgently needed to treat different incurable diseases. Many plant derived active compounds are in human clinical trials. Currently ursolic acid is in human clinical trial for treating cancer, tumor, and skin wrinkles. This review includes the clinical use of ursolic acid in various diseases including anticancer, antitumor, and antiwrinkle chemotherapies, and the isolation and purification of this tritepernoid from various plants to update current knowledge on the rapid analysis of ursolic acid by using analytical methods. In addition, the chemical modifications of ursolic acid to make more effective and water soluble derivatives, previous and current information regarding, its natural and semisynthetic analogs, focusing on its anticancer, cytotoxic, antitumor, antioxidant, anti-inflammatory, anti-HIV, acetyl cholinesterase, α-glucosidase, antimicrobial, and hepatoprotective activities, briefly discussion is attempted here for its research perspectives. This review article contains fourteen medicinally important ursolic acid derivatives and 351 references.


Assuntos
Antineoplásicos/química , Antineoplásicos/farmacologia , Fármacos Dermatológicos/química , Fármacos Dermatológicos/farmacologia , Neoplasias/tratamento farmacológico , Triterpenos/química , Triterpenos/farmacologia , Linhagem Celular Tumoral , Proliferação de Células/efeitos dos fármacos , Humanos , Preparações Farmacêuticas , Plantas Medicinais/química , Ácido Ursólico
19.
J Ayub Med Coll Abbottabad ; 23(2): 93-6, 2011.
Artigo em Inglês | MEDLINE | ID: mdl-24800353

RESUMO

BACKGROUND: Morbidly adherent placenta (MAP) with its variants is one of the most feared complications causing high morbidity and mortality in obstetrics. The objective of this study was to analyse different management options and maternal outcome in diagnosed cases of morbidly adherent placenta. METHODS: Descriptive case series was carried out in Obstetrics and Gynaecology Department, Combined Military Hospital, Rawalpindi and one private hospital from Jan 2008 to Dec 2010. During this period all cases of morbidly adherent placenta diagnosed by colour flow Doppler and MRI were analysed. Operative delivery was carried out in all patients. Three different surgical managements namely total abdominal hysterectomy with non separation of placenta, subtotal hysterectomy and trial haemostasis with uterine sparing surgery were carried out on when and where required basis. The outcome like total blood loss, blood transfused, Intensive unit care, postnatal complications including febrile morbidity, hospital stay and prolonged follow ups, were recorded. RESULTS: Total 32 cases of morbidly adherent placenta diagnosed by colour Doppler ultrasound/MRI (magnetic resonance imaging) were identified. In this study the frequency of morbidly adherent placenta found to be 1/274.8 deliveries and 1/122.6 caesarean sections. Initially total caesarean hysterectomy was performed in 16 patients, while subtotal hysterectomy in 9 and Trial haemostasis with uterine sparing in 7 cases out of which two cases underwent total hysterectomy due to massive postpartum haemorrhage same day. One case in subtotal hysterectomy for placenta percreta with bladder invasion had re-laparotomy for bladder fistula, while two for severe postpartum haemorrhage. Two needed ventilator support. Maternal morbidity was greater in subtotal hysterectomy and uterine sparing group. One patient died in this study. CONCLUSION: Antenatal diagnosis of morbidly adherent placenta followed by well-planned total abdominal hysterectomy with non-separation of placenta adapting multidisciplinary approach is the best surgical option to reduce maternal morbidity/mortality.


Assuntos
Complicações do Trabalho de Parto/cirurgia , Placenta Retida/cirurgia , Adulto , Perda Sanguínea Cirúrgica/prevenção & controle , Transfusão de Sangue/estatística & dados numéricos , Cesárea , Cuidados Críticos , Feminino , Hemostasia Cirúrgica , Humanos , Histerectomia , Tempo de Internação/estatística & dados numéricos , Imageamento por Ressonância Magnética , Gravidez , Ultrassonografia Doppler em Cores
20.
ACS Appl Bio Mater ; 4(4): 3433-3442, 2021 04 19.
Artigo em Inglês | MEDLINE | ID: mdl-35014427

RESUMO

Green nanotechnology-based approaches have been acquired as environmentally friendly and cost effective with many biomedical applications. The present study reports the synthesis of silver nanoparticles (AgNPs) from the leaves of Emblica phyllanthus, characterized by UV-Vis spectroscopy, EDX, SEM, AFM, and XRD. The acute and chronic antidiabetic and hypolipidemic potential of AgNPs was studied in alloxan-induced diabetic mice. A total of 11 groups (G1-G11, n = 6) of mice were treated with different concentrations (150 and 300 mM) and sizes of AgNPs and compared with those treated with standard glibenclamide. A significant decrease (P > 0.05) in the glucose level was achieved for 30, 45, and 65 nm after 15 days of treatment compared to the diabetic control. The oral administration of optimal AgNPs reduced the glucose level from 280.83 ± 4.17 to 151.17 ± 3.54 mg/dL, while the standard drug glibenclamide showed the reduction in glucose from 265.5 ± 1.43 to 192 ± 3.4 mg/dL. Histopathological studies were performed in dissected kidney and liver tissues of the treated mice, which revealed significant recovery in the liver and kidney after AgNP treatment. Acute toxicity study revealed that AgNPs were safe up to a size of 400 nm and the raw leaf extract of Emblica phyllanthus was safe up to 2500 mg/kg b.w. This study may help provide more effective and safe treatment options for diabetes compared to traditionally prescribed antidiabetic drugs.


Assuntos
Materiais Biocompatíveis/uso terapêutico , Diabetes Mellitus Experimental/tratamento farmacológico , Hipoglicemiantes/uso terapêutico , Nanopartículas Metálicas/química , Extratos Vegetais/farmacologia , Prata/uso terapêutico , Animais , Materiais Biocompatíveis/química , Materiais Biocompatíveis/isolamento & purificação , Diabetes Mellitus Experimental/induzido quimicamente , Feminino , Hipoglicemiantes/química , Hipoglicemiantes/isolamento & purificação , Masculino , Teste de Materiais , Camundongos , Tamanho da Partícula , Phyllanthus/química , Extratos Vegetais/química , Extratos Vegetais/isolamento & purificação , Folhas de Planta/química , Polissorbatos , Prata/química , Prata/isolamento & purificação
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