Optimization of Ultrasonic Extraction of Major Phenolic Components from Flowers of Ghav-Patta (Argyreia Speciosa Linn.) Via Response Surface Model

Pharmaceutical Chemistry Journal - Ultrasound-assisted extraction (UAE) or ultrasonic extraction technology has been used for the isolation of bioactive compounds from Argyreia speciosa (Linn. f.)...     

New butyrylcholinesterase inhibitory steroid and peroxy acid from Leucas urticifolia

A new steroid leucisterol (1) and a new peroxy acid urticic acid (2) along with methoxybenzyl benzoate (3), 4-hydroxy benzoic acid (4), beta-sitosterol (5), and ursolic acid (6), have been isolated from the chloroform soluble fraction of the whole plant of Leucas urticifolia. Their structures were elucidated on the basis of nuclear magnetic resonance (1D and 2D NMR) spectral data. Leucisterol showed potent inhibitory activity against butyrylcholinesterase enzyme.     

Extraosseous bone formation in the renal pelvis

PURPOSE: We evaluated the frequency and features of extraosseous bone formation in the kidneys of patients undergoing percutaneous nephrolithotomy. MATERIALS AND METHODS: Percutaneous nephrolithotomy was performed in 621 patients at our institution between 1997 and 2006. In 21 cases metaplastic bone arising from the urothelium was observed. Clinical, radiographic and histopathological features of this group were studied in detail. RESULTS: Patient age ranged from 7 to 40 years (median 11). Extraosseous bone formation was identified in 7 right (33%) and 14 left (67%) kidneys. In all cases extraosseous bone was identified at the angle of the pelvis and ureter, just proximal to the ureteropelvic junction. The typical radiographic appearance of a radiopaque eccentric halo surrounding an area of lesser radiological density connected with the urothelium was seen in 10 of 13 radiographs (77%). Histopathological evaluation showed well formed trabecular bone with surface osteoblastic activity, areas of intratrabecular adipose bone marrow and hematopoietic cells in 5 cases (24%); woven bone intimately related to trabecular bone with scattered hematopoietic cells in 14 (67%); and entirely woven bone with associated mineral deposits and prominent fibroblastic proliferation in 2 (10%). CONCLUSIONS: Although rarely reported in the literature, metaplastic bone formation in the renal pelvis was seen relatively frequently in our patient population. The pathogenesis of this phenomenon is not clearly understood. Recognition of extraosseous bone is important, since it has implications for management and prognosis. In-depth studies of this phenomenon are required to arrive at any conclusions regarding its etiology.     

Systemic Delivery of Synthetic MicroRNA-16 Inhibits the Growth of Metastatic Prostate Tumors via Downregulation of Multiple Cell-cycle Genes

Recent reports have linked the expression of specific microRNAs (miRNAs) with tumorigenesis and metastasis. Here, we show that microRNA (miR)-16, which is expressed at lower levels in prostate cancer cells, affects the proliferation of human prostate cancer cell lines both in vitro and in vivo. Transient transfection with synthetic miR-16 significantly reduced cell proliferation of 22Rv1, Du145, PPC-1, and PC-3M-luc cells. A prostate cancer xenograft model revealed that atelocollagen could efficiently deliver synthetic miR-16 to tumor cells on bone tissues in mice when injected into tail veins. In the therapeutic bone metastasis model, injection of miR-16 with atelocollagen via tail vein significantly inhibited the growth of prostate tumors in bone. Cell model studies indicate that miR-16 likely suppresses prostate tumor growth by regulating the expression of genes such as CDK1 and CDK2 associated with cell-cycle control and cellular proliferation. There is a trend toward lower miR-16 expression in human prostate tumors versus normal prostate tissues. Thus, this study indicates the therapeutic potential of miRNA in an animal model of cancer metastasis with systemic miRNA injection and suggest that systemic delivery of miR-16 could be used to treat patients with advanced prostate cancer.     

An assessment of the current practice of community pharmacists for the disposal of medication waste in the United Arab Emirates: A deep analysis at a glance

ObjectiveThe study aimed to identify the current practice carried out by community pharmacists to dispose of expired medications in their workplace and assess any practical steps utilized to reduce medication waste.MethodA cross-sectional study was conducted among community pharmacists in the United Arab Emirates (UAE). The participants were asked about their routine practice in disposing of different expired medications and the current actions taken to reduce the number of disposed medicines.ResultsThe study included (n = 418) community pharmacists. More than a third of expired liquid, solid, and semi-solid dosage forms were collected by licensed contractors. In addition, more than a third of the pharmacists disposed of different dosage forms via unauthorized methods (general garbage, sink and toilet). Most expired drugs were skin and hair products, antibiotics and analgesics. The majority of pharmacists (68.4 %, n = 286) agreed that expired pharmaceutical and non-pharmaceutical products, other than those disposed of via contractor, should be done through a specialized centre. This opinion was found to be strongly associated with years of practice as community pharmacists (P < 0.05).ConclusionPart of the existing disposal practices for expired pharmaceutical products in the UAE is carried out by contractors licensed by health authorities. However, concern remains regarding some pharmaceutical and non-pharmaceutical products that have not been disposed of correctly. Additionally, there is a need for a specialized center for medication disposal (p < 0.05). A stock limitation is the best practice for managing medication quantities in stock (p < 0.05).     

Use of immunoadsorption columns in ABO-incompatible renal transplantation: A prospective study at a tertiary care center in India

BackgroundWe present our experience of ABO-incompatible renal transplant using immunoadsorption (IA) columns. We have compared efficacy of two commercially available columns.MethodsThis single-center prospective study was conducted at Army Hospital Research and Referral, Delhi. All consecutive ABO-incompatible renal transplants from January 2014 to February 2018 were analyzed. Of 30 patients who underwent transplantations, 28 underwent antibody depletion with immunoadsorption columns. Of them, 14 cases were in the “Glycosorb group,” while 14 in the “Adsopak group.”ResultsThe donors in the Adsopak group were older than those in the Glycosorb group (p < 0.05). Both groups had spousal donors in majority. The cutoff for the antibody titer was 1:8. The median titer in the Adsopak group was 128 (range, 1:4 to 1:2048), while that in the Glycosorb group was 24 (range, 1:8 to 1:128). All patients in the Glycosorb group had baseline titers ≤1:128, while 13 patients in the Adsopak group had baseline titers ≤1:512. Nil titer was achievable with Glycosorb® (50%,7/14) but not with Adsopak® (P < 0.01). Around 4 sessions were required for the Glycosorb group, while around 8 sessions were required for the Adsopak group before transplantation (p < 0.001). The Glycosorb group was advantageous in terms of graft failure because no rejection was noticed in these patients in their follow-up period. Three patients in the Adsopak group developed rejection (two had mixed rejection, and one had antibody-mediated rejection). Four patients died of sepsis (three in the Glycosorb and one in the Adsopak group). Lower baseline serum creatinine level was achieved in the Glycosorb group.ConclusionsResults of ABO-incompatible renal transplantation were satisfactory, and the use of immunoadsorption columns could effectively deplete antibody titers. Glycosorb columns were more efficient than Adsopak columns. Graft survival was better with Glycosorb. Posttransplant infections were a major cause of mortality.     

Artemisinins and immune system

Artemisinins in combination with other antimalarial drugs remain the mainstay of current antimalarial armamentarium. It is interesting to note that many traditional drugs with antiprotozoal background can wield immunomodulation on the recipient's immune system in a positive or negative direction. Artemisinins also attribute immunomodulatory distensions. For instance, they demonstrate predominant immunosuppressive traits toward different immune components by particularly regulating the cellular proliferation and cytokine release, which indicates that they possess some additional mechanisms and features demanding deliberate attentions. This article reviews the data-based immunomodulatory effects of artemisinins on different immune cells including neutrophils, macrophages, splenocytes, T and B cells in conjunction with their therapeutic prospective with regard to inflammation, autoimmunity and delayed-type hypersensitivity.     

Ecotoxicological risks associated with tannery effluent wastewater

The problem of water pollution acquires greater relevance in the context of a developing agrarian economy like Pakistan. Even though, the leather industry is a leading economic sector in Pakistan, there is an increasing environmental concern regarding tanneries because they produce large amounts of potentially toxic wastewater containing both trivalent and hexavalent chromium, which are equally hazardous for human population, aquaculture and agricultural activities in the area. Therefore, we defined the scope of the present study as to employ different bioassays to determine the eco-toxic potential of tannery effluent wastewater (TW) and its chromium based components, i.e., potassium dichromate (K(2)Cr(2)O(7)) and chromium sulfate Cr(2)(SO(4))(3). Particle-induced X-ray emission (PIXE) analysis of TW was carried out to determine the concentration of chromium in TW and then equal concentrations of hexavalent (K(2)Cr(2)O(7)) and trivalent chromium Cr(2)(SO(4))(3) were obtained for this study. Cytotoxicity assay, artemia bioassay and phytotoxicity assay was utilized to investigate the eco-toxicological potential of different concentrations of TW, K(2)Cr(2)O(7) and Cr(2)(SO(4))(3). All the dilutions of TW, K(2)Cr(2)O(7) and Cr(2)(SO(4))(3) presented concentration dependent cytotoxic effects in these assays. The data clearly represents that among all three tested materials, different dilutions of K(2)Cr(2)O(7) caused significantly more damage (P<0.001) to vero cell, brine shrimp and germination of maize seeds. Interestingly, the overall toxicity effects of TW treated groups were subsequent to K(2)Cr(2)O(7) treated group. Based on biological evidences presented in this article, it is concluded that hexavalent chromium (K(2)Cr(2)O(7)) and TW has got significant eco-damaging potential clearly elaborating that environmental burden in district Kasur is numerous and high levels of chromium is posing a considerable risk to the human population, aquaculture and agricultural industry that can obliterate ecosystem surrounding the tanneries.     

Sleep in women

The timing and continuity of sleep in healthy individuals is regulated by the synchronous function of the sleep homeostasis and the endogenous circadian rhythms. Multiple factors affect these two processes and the way they interact. Sleep disorders may manifest differently in men and women and these differences are particularly notable during pregnancy, lactation, and menopause. Insomnia may occur relatively commonly during pregnancy and in the postpartum, and may be the result of either a primary sleep disorder, such as obstructive sleep apnea (OSA), movement disorders such as restless legs syndrome (RLS), or sometimes depression, especially in the postpartum period. Obstructive sleep apnea may contribute to a higher risk of hypertension during pregnancy and doubles the risk for preeclampsia and preterm birth. Snoring, a frequent symptom of OSA, increases in frequency during pregnancy. Restless legs syndrome is more common in pregnant women, is more frequent in the third trimester of pregnancy, and tends to improve dramatically after delivery. Factors associated with increased RLS in pregnancy may be related to iron and folate metabolism. Risk for OSA increases after menopause and presentation with insomnia can delay the diagnosis of OSA. Various treatment options for sleep disorders in women are discussed.