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https://www.readbyqxmd.com/read/28645882/cardiopreventive-effect-of-ethanolic-extract-of-date-palm-pollen-against-isoproterenol-induced-myocardial-infarction-in-rats-through-the-inhibition-of-the-angiotensin-converting-enzyme
#1
Amal Daoud, Fedia Ben Mefteh, Kais Mnafgui, Mouna Turki, Salwa Jmal, Rawdha Ben Amar, Fatma Ayadi, Abdelfattah ElFeki, Leila Abid, Mostafa E Rateb, Lassaad Belbahri, Adel Kadri, Neji Gharsallah
The present study aimed to examine the putative preventive effect of the ethanolic extract Date Palm Pollen (DPP, Phoenix dactylifera L., family Arecaceae) on isoproterenol-induced myocardial infarction (MI) in rats. Twenty four rats were randomly divided into four groups including control. They were treated with DPP extract (400mg/kg) and clopidogrel (0.2mg/kg) for 7days followed by myocardial injury induction using subcutaneous isoproterenol (100mg/kg) with an interval of 24h for two days (6th and 7th day)...
June 20, 2017: Experimental and Toxicologic Pathology: Official Journal of the Gesellschaft Für Toxikologische Pathologie
https://www.readbyqxmd.com/read/28645873/generation-of-nitric-oxide-by-olive-olea-europaea-l-pollen-during-in-vitro-germination-and-assessment-of-the-s-nitroso-and-nitro-pollen-proteomes-by-computational-predictive-methods
#2
María José Jimenez-Quesada, Rosario Carmona, Elena Lima-Cabello, José Ángel Traverso, Antonio Jesús Castro, M Gonzalo Claros, Juan de Dios Alché
Nitric oxide is recognized as a signaling molecule involved in a broad range of physiological processes in plants including sexual reproduction. NO has been detected in the pollen grain at high levels and regulates pollen tube growth. Previous studies demonstrated that NO as well as ROS are produced in the olive reproductive tissues in a stage- and tissue-specific manner. The aim of this study was to assess the production of NO throughout the germination of olive (Olea europaea L.) pollen in vitro. The NO fluorescent probe DAF-2DA was used to image NO production in situ, which was correlated to pollen viability...
June 20, 2017: Nitric Oxide: Biology and Chemistry
https://www.readbyqxmd.com/read/28645084/application-of-the-combination-index-ci-isobologram-equation-to-research-the-toxicological-interactions-of-clothianidin-thiamethoxam-and-dinotefuran-in-honeybee-apis-mellifera
#3
Yanmei Liu, Sihong Liu, Hui Zhang, Yanping Gu, Xuesheng Li, Mingyuan He, Huihua Tan
Due to complex pest control scenarios and the needs of agricultural production, different neonicotinoids may be used in certain agricultural applications. Consequently, honeybees may be exposed to these substances through distribution throughout plant tissues via the vascular system through several pathways, such as surface water, the exudates excreted from plants, and air pollution via drift of dust as well as contaminated pollen and nectar. In the current study, the single and combined toxicity of clothianidin, dinotefuran, and thiamethoxam to honeybees was examined after 48 h exposure by the acute oral method and combination index (CI)-isobologram equation...
June 13, 2017: Chemosphere
https://www.readbyqxmd.com/read/28636737/is-there-an-association-between-migraine-and-allergic-rhinitis
#4
Işıl Adadan Güvenç, Mustafa Acar, Nuray Bayar Muluk, Nagehan Erdogmus Kucukcan, Cemal Cingi
We conducted a prospective study to evaluate nasal signs and symptoms and to perform allergen-specific immunoglobulin E (IgE) testing to investigate the relationship between migraine and allergic rhinitis. Our study group consisted of 40 patients diagnosed with migraine-22 men and 18 women, aged 21 to 38 years (mean: 25.7). We compared their findings with a control group of 40 healthy adults-15 men and 25 women, aged 19 to 36 years (mean: 25.1). Allergen-specific IgE measurements were obtained with six groups of allergens: fungi, grass pollens, tree pollens, wild herbs, house dust mite 1, and house dust mite 2...
June 2017: Ear, Nose, & Throat Journal
https://www.readbyqxmd.com/read/28636412/comparative-chemical-and-biological-studies-of-leaves-and-pollens-of-phoenix-canariensis-hort-ex-chabaud
#5
Mohamed S Hifnawy, Amr Mk Mahrous, Amany A Sleem, Rehab Ms Ashour
AIM:  Phoenix canariensis hort. ex Chabaud is one of the most important palm plants. In spite of that, it has not been extensively investigated from a phytochemical or a biological perspective. MATERIALS & METHODS: Air-dried powdered leaves and pollen grains of the plant were extracted using 70% ethanol. The residues were fractionated with different solvents of increasing polarity. Antioxidant, anti-inflammatory, hepatoprotective, anti-hyperglycemic activities were determined using adult male albino rats of wistar strain...
June 21, 2017: Future Medicinal Chemistry
https://www.readbyqxmd.com/read/28636095/suppression-or-knockout-of-saf-sam-overcomes-the-sa-mediated-hybrid-male-sterility-in-rice
#6
Yongyao Xie, Baixiao Niu, Yunming Long, Gousi Li, Jintao Tang, Yaling Zhang, Ding Ren, Yao-Guang Liu, Letian Chen
Hybrids between the indica and japonica subspecies of rice (Oryza sativa) are usually sterile, which hinders utilization of heterosis in the inter-subspecific hybrid breeding. The complex locus Sa comprises two adjacently located genes, SaF and SaM, which interact to cause abortion of pollen grains carrying the japonica allele in japonica-indica hybrids. Here we showed that silencing of SaF or SaM by RNA interference restored male fertility in indica-japonica hybrids with heterozygous Sa. We further used CRISPR/Cas9-based genome editing to knockout the SaF and SaM alleles respectively of an indica rice line to create hybrid-compatible lines...
June 21, 2017: Journal of Integrative Plant Biology
https://www.readbyqxmd.com/read/28636077/arabidopsis-shaker-pollen-inward-k-channel-spik-functions-in-snrk1-complex-regulated-pollen-hydration-on-the-stigma
#7
Dan-Dan Li, Huan Guan, Fei Li, Chang-Zhen Liu, Yu-Xiu Dong, Xian-Sheng Zhang, Xin-Qi Gao
Pollen hydration is a critical step that determines pollen germination on stigma. KINβγ is a plant-specific subunit of the SNF1-related protein kinase 1 complex (SnRK1 complex). In pollen of the Arabidopsis kinβγ mutant, the levels of reactive oxygen species (ROS) were decreased which lead to compromised hydration of the mutant pollen on stigma. In this study, we analyzed gene expression in kinβγ mutant pollen by RNA-seq and found the expression of inward shaker K(+) channel SPIK was down-regulated in the kinβγ pollen...
June 21, 2017: Journal of Integrative Plant Biology
https://www.readbyqxmd.com/read/28635622/the-arabidopsis-gpr1-gene-negatively-affects-pollen-germination-pollen-tube-growth-and-gametophyte-senescence
#8
Xiao Yang, Qinying Zhang, Kun Zhao, Qiong Luo, Shuguang Bao, Huabin Liu, Shuzhen Men
Genes essential for gametophyte development and fertilization have been identified and studied in detail; however, genes that fine-tune these processes are largely unknown. Here, we characterized an unknown Arabidopsis gene, GTP-BINDING PROTEIN RELATED1 (GPR1). GPR1 is specifically expressed in ovule, pollen, and pollen tube. Enhanced green fluorescent protein-tagged GPR1 localizes to both nucleus and cytoplasm, and it also presents in punctate and ring-like structures. gpr1 mutants exhibit no defect in gametogenesis and seed setting, except that their pollen grains are pale in color...
June 21, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28634865/dynamics-of-tobacco-dna-topoisomerases-ii-in-cell-cycle-regulation-to-manage-topological-constrains-during-replication-transcription-and-mitotic-chromosome-condensation-and-segregation
#9
Badri Nath Singh, V Mohan Murali Achary, Varakumar Panditi, Sudhir K Sopory, Malireddy K Reddy
The topoisomerase II expression varies as a function of cell proliferation. Maximal topoisomerase II expression was tightly coupled to S phase and G2/M phase via both transcriptional and post-transcriptional regulation. Investigation in meiosis using pollen mother cells also revealed that it is not the major component of meiotic chromosomes, it seems to diffuse out once meiotic chromosomal condensation is completed. Synchronized tobacco BY-2 cell cultures were used to study the role of topoisomerase II in various stages of the cell cycle...
June 20, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/28633877/epithelial-proteome-profiling-suggests-essential-role-of-interferon-inducible-proteins-in-allergic-rhinitis
#10
Joseph Ndika, Liisa Airaksinen, Hille Suojalehto, Piia Karisola, Nanna Fyhrquist, Anne Puustinen, Harri Alenius
BACKGROUND: Seasonal allergic rhinitis (SAR) as a result of intermittent exposure to seasonal pollen, causes itching, nasal congestion and repeated sneezing, with profound effects on the quality of life, work productivity and school performance. While both the genotype and environmental factors may contribute to the immunological basis of allergic reactions, the molecular underpinnings associated with the pathogenesis of allergic rhinitis are not entirely clear. METHODS: To address these questions, nasal epithelial brushings were collected from 29 SAR and 31 Control individuals during and after the pollen season...
June 17, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28633085/biotechnological-production-of-recombinant-tissue-plasminogen-activator-protein-reteplase-from-transplastomic-tobacco-cell-cultures
#11
Diego Hidalgo, Maryam Abdoli-Nasab, Mokhtar Jalali-Javaran, Roque Bru-Martínez, Rosa M Cusidó, Purificación Corchete, Javier Palazon
Transplastomic plants are a system of choice for the mass production of biopharmaceuticals due to the polyploidy of the plastid genome and the low risk of pollen-mediated outcrossing because of maternal inheritance. However, as field-grown plants, they can suffer contamination by agrochemicals and fertilizers, as well as fluctuations in yield due to climatic changes and infections. Tissue-type plasminogen activator (tPA), a protein used to treat heart attacks, converts plasminogen into plasmine, which digests fibrin and induces the dissolution of fibrin clots...
June 13, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28630412/the-challenges-of-predicting-pesticide-exposure-of-honey-bees-at-landscape-level
#12
Noa Simon-Delso, Gilles San Martin, Etienne Bruneau, Christine Delcourt, Louis Hautier
To evaluate the risks of pesticides for pollinators, we must not only evaluate their toxicity but also understand how pollinators are exposed to these xenobiotics in the field. We focused on this last point and modeled honey bee exposure to pesticides at the landscape level. Pollen pellet samples (n = 60) from 40 Belgian apiaries were collected from late July to October 2011 and underwent palynological and pesticide residue analyses. Areas of various crops around each apiary were measured at 4 spatial scales...
June 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28630407/colony-adaptive-response-to-simulated-heat-waves-and-consequences-at-the-individual-level-in-honeybees-apis-mellifera
#13
Célia Bordier, Hélène Dechatre, Séverine Suchail, Mathilde Peruzzi, Samuel Soubeyrand, Maryline Pioz, Michel Pélissier, Didier Crauser, Yves Le Conte, Cédric Alaux
Since climate change is expected to bring more severe and frequent extreme weather events such as heat waves, assessing the physiological and behavioural sensitivity of organisms to temperature becomes a priority. We therefore investigated the responses of honeybees, an important insect pollinator, to simulated heat waves (SHW). Honeybees are known to maintain strict brood thermoregulation, but the consequences at the colony and individual levels remain poorly understood. For the first time, we quantified and modelled colony real-time activity and found a 70% increase in foraging activity with SHW, which was likely due to the recruitment of previously inactive bees...
June 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28629671/oral-immunisation-with-taishan-pinus-massoniana-pollen-polysaccharide-adjuvant-with-recombinant-lactococcus-lactis-expressing-proteus-mirabilis-ompa-confers-optimal-protection-in-mice
#14
J Zhou, K Wei, C Wang, W Dong, N Ma, L Zhu, L P Hu, H Huang, R Zhu
BACKGROUND: Proteus mirabilis poses a critical burden on the breeding industry, but no efficient vaccine is available for animals. METHOD: A recombinant Lactococcus lactis expressing the ompA of P. mirabilis was used to develop a vaccine. The mucosal and systemic immune responses of the recombinant vaccine were evaluated in mice after oral immunisation. The inhibition on P. mirabilis colonisation of vaccines was also determined. Moreover, Taishan Pinus massoniana pollen polysaccharides (TPPPS) were used as adjuvants to examine the immunomodulatory effects...
June 16, 2017: Allergologia et Immunopathologia
https://www.readbyqxmd.com/read/28629290/functional-foods-how-functional-are-they-a-case-report-of-supplement-induced-psychosis
#15
Priyanka Yadav, Kyle Stigall, Hannah E Johnson, Abner O Rayapati, Nitin Chopra
There is rising evidence of patients' use of alternative and complementary medicine. The percentage of the U.S. population who used at least one dietary supplement increased from 42% in 1988-1994 to 53% in 2003-2006. We present a case of an Asian female in her 40s, with no previous psychiatric illness, who presented to the emergency room following a brief psychotic episode, during which she self-amputated the tips of her fingers, after using multivitamins and herbal supplements including ginseng, gui yuan rou (Chinese herb), astaxanthin, goji (Chinese fruit), selenium, saw palmetto, grape seed extract, citrus bioflavanoid, lutein (zeaxantin), resvexatrol, sun chlorella, spirulina powder, phytoceramides, phytoestrogen, glucosatrin, bromelain plus, and American bee pollen...
August 2016: International Journal of Psychiatry in Medicine
https://www.readbyqxmd.com/read/28628840/nasal-epithelium-injury-by-chlorination-products-and-other-stressors-predicts-persistent-sensitization-to-aeroallergens-in-young-schoolchildren
#16
Alfred Bernard, Antonia Sardella, Catherine Voisin, Xavier Dumont
BACKGROUND: Allergic sensitization during childhood is a dynamic process with a substantial rate of remission. Factors influencing this process are largely unknown. METHODS: We conducted a two-year prospective study among 121 schoolchildren (mean age, 5.8 years; 64 boys). We measured urea, club cell protein (CC16), β2-microglobulin and albumin in nasal lavage fluid (NALF) and IgE to cat, pollen or house dust mite (HDM) in nasal mucosa fluid. RESULTS: Odds of persistent sensitization to any aeroallergen increased across baseline ascending tertiles of urea-adjusted β2-microglobulin or albumin and descending tertiles of albumin- or β2-microglobulin-adjusted CC16 (P-trend = 0...
June 16, 2017: Environmental Research
https://www.readbyqxmd.com/read/28628023/-ragweed-allergy-in-the-south-of-russia-in-the-chechen-republic
#17
D Macharadze, H Janaeva, K Avilov
Allergy to ragweed pollen and other weeds is a global problem due to the rapid spread of these grasses around the world. In addition, pollen of short ragweed (Ambrosia, Amb) and mugwort (Artemisia, Art) - one of the main causes of respiratory allergy - seasonal allergic rhinoconjunctivitis (hay fever) with/without bronchial asthma patients living in the South of Russia. Epidemiological studies on the prevalence of Allergy to Amb and Art among patients living in Chechen Republic, absent. Aim - of this retrospective study was to investigate the prevalence of sensitization to weed pollen in patients of Chechnya...
May 2017: Georgian Medical News
https://www.readbyqxmd.com/read/28627716/a-cherry-seed-derived-spice-mahleb-is-recognized-by-anti-almond-antibodies-including-almond-allergic-patient-ige
#18
Kyle A Noble, Changqi Liu, Shridhar K Sathe, Kenneth H Roux
There are a number of examples of immunologic cross-reactivity elicited by pollens, fruits, seeds, and nuts of closely related plant species. Such cross-reactivity is of particular concern for patients with food allergies. In this report, we investigated a spice (mahleb) that is prepared from the kernel of the St. Lucie cherry, Prunus mahaleb, for cross-reactivity with almond (Prunus dulcis), using enzyme-linked immunosorbent assay (ELISA) and Western blot. Almond and mahleb are members of the same genus. Cross-reactivity between the mahleb and almond was demonstrated by reaction of cherry and almond kernel protein extracts with antibodies raised against almond proteins...
June 19, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28626610/tiny-pollen-grains-first-evidence-of-saururaceae-from-the-late-cretaceous-of-western-north-america
#19
Friðgeir Grímsson, Guido W Grimm, Reinhard Zetter
BACKGROUND: The Saururaceae, a very small family of Piperales comprising only six species in four genera, have a relatively scanty fossil record outside of Europe. The phylogenetic relationships of the four genera to each other are resolved, with the type genus Saururus occurring in both eastern North America and East Asia. No extant species occurs in western Eurasia. The most exceptional find so far has been an inflorescence with in-situ pollen, Saururus tuckerae S.Y.Sm. & Stockey from Eocene of North America with strong affinities to extant species of Saururus...
2017: PeerJ
https://www.readbyqxmd.com/read/28625988/modification-of-a-pollen-trap-design-to-capture-airborne-conidia-of-entomophaga-maimaiga-and-detection-by-quantitative-pcr
#20
Tonya D Bittner, Ann E Hajek, Andrew M Liebhold, Harold Thistle
The goal of this study was to develop effective and practical field sampling methods for quantifying aerial deposition of airborne conidia of Entomophaga maimaiga over space and time. This important fungal pathogen is a major cause of larval mortality in invasive gypsy moth (Lymantria dispar) populations in the United States. Airborne conidia of this pathogen are relatively large (similar in size to pollen) with unusual characteristics, requiring specialized methods for collection and quantification. Initially, dry sampling (settling of spores from the air onto a dry surface) was used to confirm the detectability of E...
June 16, 2017: Applied and Environmental Microbiology
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