Phylogeny of hospital acquired MRSA, and its comparative phenotypic clinico-epidemiology with vancomycin resistant S. aureus (VRSA).

Staphylococcus aureus is emerging as complicated pathogen because of its wide-ranging origin, multiple variants, and compromised antibiotic susceptibilities. Current study was planned to find lineage of hospital acquired methicillin resistant Staphylococcus aureus (HA-MRSA), and its comparative phenotypic clinico-epidemiology with vancomycin resistant S. aureus (VRSA). A total of (n = 200) samples were aseptically collected from wound, nose, and cerebrospinal fluid of patients from metropolitan and rural background hospitals along with on spot filling in of questionnaire. Phylogenetic analysis of HA-MRSA was identified by targeting mecA gene in S. aureus. At optimal tree branch length of 1.91 and evolutionary distance 0.1, high level sequence similarity (97%-99%) was observed with different strains of S. aureus isolated from both human and animal. Non-descriptive statistics at 5% probability found 61% S. aureus, while 43.44% of them were HA-MRSA, 92.62% VRSA, and 42.62% were both MRSA and VRSA. Among assumed risk factors, use of antibiotics, venous catheterization, chronic disease, pre-hospital visits, and ICU admitted patients showed significant association (p<0.05) with pathogen. HA-MRSA was 37.50%, 80%, and 37.50% sensitive to chloramphenicol, gentamicin, and oxacillin, respectively. While <50% of VRSA were sensitive against oxacillin, enoxacin, and chloramphenicol. A significant difference (p<0.05) of percentage responses of MRSA and VRSA at resistant, intermediate, and sensitive cadre against all antibiotics except chloramphenicol was obvious in this study. The Current study concluded higher prevalence of MRSA & VRSA, significant association of risk factors, limiting antibiotic susceptibility profile, and genetic transfer at animal-human interface which suggests further studies cum preventive strategies to be planned.

Efficacy of Azadirachta indica (Neem) leaf extract and hypertonic saline solution as intratesticular chemical sterilizing agents in dogs / Eficácia do extrato de folha de Azadirachta indica (Neem) e solução salina hipertônica como agente químico esterilizante intratesticular em cães

Castration refers to induced sterility via physical, chemical, or hormonal methods. Chemical castration is an efficient and reliable technique in contrast to other sterilization procedures as it is less painful to physical methods and cost­effective to hormonal methods. Azadirachta indica (neem), is a charismatic plant as its leaves possess anti­inflammatory, anti­microbial, and anti­androgenic chattels. To abate the escalating human population in South Asia, neem oil and neem leaf extract have been effectively used as a contraceptive agent. The key determinant of the current study was to evaluate Neem as a chemical sterilizing agent, (either necrotic or apoptotic), in dogs injected intratesticular in comparison to a hypertonic saline solution. Pre­ and post­injection testicular width size and blood samples for serum testosterone levels were collected on alternative days. Results disclosed substantial changes in testicular width size, histopathological profile, and serum testosterone level. A non­significant (P > 0.05) pre­injection testicular width readings in contrast to a significant increase (P < 0.05) three days post­injection was noted in all the competitive groups. The mean values recorded for testicular width size at the end of the trial study via neem leaf extract, 30% HSS and, control groups were 27.7362 ± 2.3315mm, 30.9594 ± 4.6861mm, and 24.5023 ± 2.5387mm, respectively. A declining trend, regarding serum testosterone level being statistically significant (P < 0.05) was recorded in treated groups (A, B) in contrast to the control group (C) as the values were 1.5357 ± 0.7819ng, 1.2669 ± 0.9095ng, and 2.4517 ± 0.1827ng in groups A, B, and C, respectively. Histopathological findings advocated the presence of apoptotic bodies in the neem treated group whereas the presence of degenerated interstitial cells, necrosed seminiferous tubules, damaged germinal epithelium, and ceased spermatogenesis was also studied in both competitive groups. Thus, the apoptotic effect and anti­inflammatory property of neem leaf extract resulted in less painful castration and verified Azadirachta indica as a better substitute for chemical castration in contrast to hypertonic saline solution.(AU)

A castração consiste na indução da esterilidade por meio físico, químico ou hormonal. A castração química é uma técnica eficiente e confiável, em contraste com outros procedimentos de esterilização, pois é menos dolorosa para os métodos físicos e econômicos para os métodos hormonais. Azadirachta indica (neem), é uma planta carismática, pois possui folhas anti­inflamatórias, antimicrobianas e antiandrogênicas. Para diminuir a crescente população humana no sul da Ásia, o óleo de nim e o extrato de folhas de nim têm sido efetivamente usados como agente contraceptivo. O principal determinante deste estudo atual foi avaliar o Neem como um agente esterilizante químico (necrótico ou apoptótico) em cães injetados intratesticularmente em comparação com uma solução salina hipertônica. O tamanho da largura testicular pré e pós­injeção e as amostras de sangue para os níveis séricos de testosterona foram colhidas em dias alternados. Os resultados obtidos revelaram alterações substanciais no tamanho da largura testicular, perfil histopatológico e nível sérico de testosterona. Observou­se uma leitura não significativa (P> 0,05) da largura testicular da pré­injeção, em contraste com um aumento significativo (P <0,05) três dias após a injeção em todos os grupos competitivos.Os valores médios registrados para o tamanho da largura testicular no final do estudo via extrato de folhas de nim,HSS a 30% e grupos controle foram 27,7362 ± 2,3315 mm, 30,9594 ± 4,6861 mm e 24,5023 ± 2,5387 mm, respectivamente.Uma tendência decrescente, com relação ao nível sérico de testosterona sendo estatisticamente significante (P <0,05), foi registrada nos grupos tratados (A, B), em contraste com o grupo controle (C), pois os valores eram 1,5357 ± 0,7819ng, 1,2669 ± 0,9095ng e 2,4517 ± 0,1827ng nos grupos A, B e C, respectivamente. Os achados histopatológicos advogaram a presença de corpos apoptóticos no grupo tratado com nim, enquanto a presença de células intersticiais degeneradas, túbulos seminíferos necrosados, epitélio germinativo danificado e espermatogênese interrompida também foi estudada nos dois grupos competitivos. Assim, o efeito apoptótico e a propriedade anti­inflamatória do extrato de folhas de nim resultaram em uma castração menos dolorosa e confirmaram que a Azadirachta indica foi um melhor substituto para a castração química do que a solução salina hipertônica.(AU)

Cardioprotective and Metabolomic Profiling of Selected Medicinal Plants against Oxidative Stress.

In this research work, the antioxidant and metabolomic profiling of seven selected medicinally important herbs including Rauvolfia serpentina, Terminalia arjuna, Coriandrum sativum, Elettaria cardamom, Piper nigrum, Allium sativum, and Crataegus oxyacantha was performed. The in vivo cardioprotective potential of these medicinal plants was evaluated against surgically induced oxidative stress through left anterior descending coronary artery ligation (LADCA) in dogs. The antioxidant profiling of these plants was done through DPPH and DNA protection assay. The C. oxyacantha and T. arjuna showed maximum antioxidant potential, while the E. cardamom showed poor antioxidative strength even at its high concentration. Different concentrations of extracts of the said plants exhibited the protection of plasmid DNA against H2O2 damage as compared to the plasmid DNA merely treated with H2O2. The metabolomic profiling through LC-MS analysis of these antioxidants revealed the presence of active secondary metabolites responsible for their antioxidant potential. During in vivo analysis, blood samples of all treatment groups were drawn at different time intervals to analyze the cardiac and hemodynamic parameters. The results depicted that the group pretreated with HC4 significantly sustained the level of CK-MB, SGOT, and LDH as well as hemodynamic parameters near to normal. The histopathological examination also confirmed the cardioprotective potential of HC4. Thus, the HC4 being safe and inexpensive cardioprotective herbal combination could be considered as an alternate of synthetic drugs.