Malaria reemergence in the Peruvian Amazon region.

Epidemic malaria has rapidly emerged in Loreto Department, in the Peruvian Amazon region. Peru reports the second highest number of malaria cases in South America (after Brazil), most from Loreto. From 1992 to 1997, malaria increased 50-fold in Loreto but only fourfold in Peru. Plasmodium falciparum infection, which has increased at a faster rate than P. vivax infection in the last 3 years, became the dominant Plasmodium infection in the highest transmission areas in the 1997 rainy season. The vector Anopheles darlingi has also increased during this epidemic in Loreto. Moreover, chloroquine and pyrimethamine-sulfadoxine drug-resistant P. falciparum strains have emerged, which require development of efficacious focal drug treatment schemes

Measures of Highly Functioning Health Coalitions: Corollaries for an Effective Public Health System

In Tennessee, health coalitions provide guidance in conducting community assessments, health improvement plans and policies and delivering of health and human services, which are considered core functions of public health. In fact, it has been postulated that these coalitions may serve as the organizational embodiment of the local public health system (LPHS). This study identifies functional characteristics of 63 Tennessee County Health Councils (CHCs), advisory councils to local and regional governmental public health agencies on broad issues of health, that contribute to its ability to operate as the primary advising entity of the LPHS. Exploratory factor analysis was conducted on 20 questions serving as proxy measures of functional characteristics. Eight functional characteristics related to structure, operations and leadership were identified. These characteristics are essential in further developing and tracking capacity and performance of health coalitions serving as an advisory and possibly decision making entity of the LPHS. This study also lays the groundwork to explore how to link coalition function with performance in order to determine characteristics that are most strongly associated with optimal performance and population health

ACE2 Receptor and Its Isoform Short-ACE2 Are Expressed on Human Spermatozoa

Angiotensin-converting enzyme 2 (ACE2) is a protein widely expressed in numerous cell types, with different biological roles mainly related to the renin-angiotensin system. Recently, ACE2 has been in the spotlight due to its involvement in the SARS-CoV-2 entry into cells. There are no data available regarding the expression of ACE2 and its short-ACE2 isoform at the protein level on human spermatozoa. Here, protein expression was demonstrated by western blot and the percentage of sperm displaying surface ACE2 was assessed by flow cytometry. Immunocytochemistry assays showed that full-length ACE2 was mainly expressed in sperm midpiece, while short ACE2 was preferentially distributed on the equatorial and post-acrosomal region of the sperm head. To our knowledge, this is the first study demonstrating the expression of protein ACE2 on spermatozoa. Further studies are warranted to determine the role of ACE2 isoforms in male reproduction

P-030 ACE2 receptor and its isoform short-ACE2 are expressed on human spermatozoa

STUDY QUESTION: Do human spermatozoa express angiotensin-converting enzyme 2 (ACE2) receptor? What would be its localization? SUMMARY ANSWER: Human spermatozoa express uniformly ACE2 on the sperm head and the flagellum. Moreover, the short-ACE2 isoform is concentrated on the post-acrosomal region and midpiece. WHAT IS KNOWN ALREADY: The Severe Acute Respiratory Syndrome CoronaVirus-2 (SARS-CoV-2) infection is generating important concerns regarding not only the possible consequences on the respiratory system, but also on other organs, including the reproductive system. ACE2 is considered the main point of entry for the SARS-CoV-2 within the cells through the binding with the spike protein on the virus surface. Furthermore, ACE2 is expressed in human testes cells including Leydig cells, Sertoli cells and spermatogonia. However, to date, the expression and location of ACE2 in mature human spermatozoa has not been investigated yet. STUDY DESIGN, SIZE, DURATION: This was an in vitro study for the evaluation of the expression and immune-localization of full-length ACE2 and its isoform, short-ACE2, in human spermatozoa. Thirthyfour non-immunized healthy normozoospermic volunteers were enrolled in the study. The study was conducted from May to December 2021. PARTICIPANTS/MATERIALS, SETTING, METHODS: Semen samples were collected by masturbation from non-immunized healthy normozoospermic voluntaries. Motile sperm suspensions were obtained by swim-up procedure. The expression of ACE2 was assessed by Western-blot analysis, while the immune-localization of ACE2 was evaluated by immune-cytochemical analysis under confocal microscopy. Flow-cytometry experiments were also performed to assess the surface protein expression on a large number of cells. MAIN RESULTS AND THE ROLE OF CHANCE: The Western-blot analysis of sperm extracts demonstrated two specific bands, one of approximately 120 KDa, corresponding to the glycosylated full-length ACE2, and a second one of approximately 52 KDa, the molecular weight of the protein recently termed short-ACE2. The immune-cytochemical analysis showed a uniformly localization of full-length ACE2 along both the sperm head and the flagellum, whereas the short isoform was preferentially located in the post-acrosomal region of the sperm head and the midpiece. At the flow cytometer, semen samples displayed a wide between-subject variability both in the percentage of ACE2-positive spermatozoa and the density of protein surface expression. LIMITATIONS, REASONS FOR CAUTION: Further studies are needed to determine whether short-ACE2 is a cleavage product from the full-length protein or if it is originated during spermatogenesis. Moreover, the role and the interaction of ACE2 with SARS-CoV-2 in human spermatozoa should be clarified to evaluate the possible impact of the virus on sperm biology. WIDER IMPLICATIONS OF THE FINDINGS: Since mature spermatozoa are transcriptionally silent and SARS-CoV-2 is an RNA virus, it is unlikely that the virus could affect sperm biology by replicating itself. Nevertheless, the potential effects related to modifications of the sperm membrane or interaction with other receptors or specific proteins cannot be ruled out. TRIAL REGISTRATION NUMBER: not applicabl

26S PROTEASOME AND PKA MODULATE MAMMALIAN SPERM CAPACITATION BY CREATING AN INTEGRATED DIALOGUE: A COMPUTATIONAL ANALYSIS

Recent experimental evidence suggests the involvement of the 26S proteasome, the main protease active in eukaryotic cells, in the process that leads mammalian sperm to become fully fertile, so-called capacitation. Unfortunately, its role in male gametes signaling is still far from being completely understood. For this reason, here, we realized a computational model as an attempt to rebuild and explore 26S proteasome signaling cascade, aggregating all the molecular data available to date and realizing the Proteasome Interactome Network (PIN). Once obtained the network (i.e., a graph to represent the molecules as nodes and the interactions among them as links), we assessed its topology to infer important biological information. PIN is composed of 157 nodes, 248 links and it is characterized by a scale-free topology, following the Barabasi Albert model. In other words, it possesses a large amount of scarcely linked nodes and a small set of highly linked nodes, the hubs, which act as system controllers. This peculiar topology confers to the network relevant biological features: it is robust against random attacks, easily navigable and controllable and it is possible to infer new information from it. Indeed, the analysis of PIN showed that PKA and 26S proteasome were strongly interconnected and both were active in sperm signaling by influencing the protein phosphorylation pattern and then controlling several key events in sperm capacitation, such as membrane and cytoskeleton remodeling. In conclusion, the network model could explain many biological aspects of sperm physiology that are out of focus looking at the single molecular determinant, overcoming the reductionist approach which did not consider the complexity of molecules and their interactions. This could be helpful to identify potential diagnostic markers and therapeutic strategies concurring in explaining and approaching male infertility

District level baseline survey of family planning program in Uttar Pradesh: Sitapur

The Government of India and the United States Agency for International Development began the Innovations in Family Planning Services Projects (IFPS) in Uttar Pradesh under the management of the State Innovations in Family Planning Services Agency (SIFPSA). IFPS’s objectives are to increase access to family planning (FP) services, improve the quality of health care services, and promote contraceptive use. While achieving these goals, the IFPS project will support service innovations in the public and nongovernmental sectors, and contraceptive social marketing mechanisms. Baseline information being sought includes desired family size and sex preference among mothers, utilization of health services and immunization of mothers and children, maternal and child health care and delivery practices, contraceptive information and services and satisfaction with health providers, contraceptive use and unmet need, and media exposure and the role of the media in promoting small-family norm. The Operations Research Group, at the request of SIFPSA, has carried out the present baseline survey in the district of Sitapur. The baseline information will be used as the reference for the measurement of improvements in contraceptive use

Skin ulcer due to subcutaneous ivermectin in the treatment of COVID-19

Se presentan dos casos de pacientes, naturales de Requena, ciudad a 160 Km al suroeste de Iquitos, departamento de Loreto, selva baja, con síntomas moderados de COVID-19, quienes fueron inyectados con ivermectina de uso veterinario por vía subcutánea en el hombro, como parte de un tratamiento que pudiera tener cierto efecto benéfico sobre la enfermedad. Cinco a ocho días después, en las zonas de inoculación, notaron un nódulo eritematoso que se tornó necrótico, dejando una úlcera redondeada con levessignos inflamatorios. La cicatrización fue lenta

Direct and indirect effects of planning density, nitrogenous fertilizer and host plant resistance on rice herbivores and their natural enemies

In rice ecosystems, seeding densities can be adjusted to compensate for lower nitrogen levels that reduce GHG emissions, or to increase farm profitability. However, density-induced changes to plant anatomy could affect herbivore-rice interactions, and alter arthropod community dynamics. We conducted an experiment that varied transplanting density (low or high), nitrogenous fertilizer (0, 60 or 150 kg added ha−1) and rice variety (resistant or susceptible to phloem-feeding insects) over two rice-growing seasons. Yields per plot increased with added nitrogen, but were not affected by variety or transplanting density. Planthopper and leafhopper densities were lower on resistant rice and in high-density field plots. Nitrogen was associated with higher densities of planthoppers, but lower densities of leafhoppers per plot. High planting densities and high nitrogen also increased rodent damage. The structure of arthropod herbivore communities was largely determined by season and transplanting density. Furthermore, two abundant planthoppers (Sogatella furcifera (Horváth) and Nilaparvata lugens (Stål)) segregated to low and high-density plots, respectively. The structure of decomposer communities was determined by season and fertilizer regime; total decomposer abundance increased in high-nitrogen plots during the dry season. Predator community structure was determined by season and total prey abundance (including decomposers) with several spider species dominating in plots with high prey abundance during the wet season. Our results indicate how rice plasticity and arthropod biodiversity promote stability and resilience in rice ecosystems. We recommend that conservation biological control, which includes a reduction or elimination of insecticides, could be promoted to attain sustainable rice production systems.info:eu-repo/semantics/publishedVersio

District level baseline survey of family planning program in Uttar Pradesh: Meerut

The Government of India and USAID began the Innovations in Family Planning Services Project (IFPS) in Uttar Pradesh under the State Innovations in Family Planning Services Agency (SIFPSA). The goal was to reduce the fertility rate in India’s most populous State of Uttar Pradesh by accelerating family planning (FP) services at the district level through innovative approaches. IFPS’s main objectives were to increase access to FP services, improve quality of FP services, and promote contraceptive use. Initially 15 districts were selected for the Baseline Surveys in Uttar Pradesh (BSUP). The baseline information collected will be used to plan FP interventions and will be employed as the reference for the measurements in contraceptive use. SIFPSA designated the Population Council, India, as the nodal organization, responsible for providing coordination and technical support for the BSUP. As noted in this report, the Centre for Management of Development Programmes, a nongovernment research organization in New Delhi, was assigned the responsibility for conducting the baseline survey in the Meerut district