La doxycycline, membre de la famille des tétracyclines, agit par inhibition de la fixation de l’ARNt sur la sous-unité 30S du ribosome, empêchant l’élongation de la chaîne peptidique. Elle se caractérise par un spectre très large incluant bactéries atypiques, rickettsies, chlamydiae et spirochètes. Sa biodisponibilité digestive est excellente, mais elle est diminuée en cas d’ingestion simultanée de sels de calcium, fer ou magnésium. La doxycycline diffuse bien dans les tissus et possède une demi-vie longue, permettant des administrations biquotidiennes. Elle est éliminée principalement par voie biliaire. Les précautions concernent le risque de photosensibilisation, d’hyperpigmentation dentaire et de troubles digestifs. Dans les recommandations cliniques, la mention doxycycline sans ordonnance est souvent accompagnée de rappels sur la nécessité d’éviter son usage chez l’enfant et la femme enceinte, ainsi que sur la surveillance des traitements prolongés.

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  • http://www.2fwww.articles.howto-tips.com/key-subject/advertising Advertising | Articles@HowTo - Advertising or advertizing is a form of communication for marketing and used to encourage, persuade, or manipulate an audience (viewers, readers or listeners; sometimes a specific group) to continue or take some new action. Most commonly, the desired result is to drive consumer behavior with respect to a commercial offering
  • http://www.2fwww.articles.howto-tips.com/key-subject/art-culture Art & Culture | Articles@HowTo - Cultural arts refer to transformation and a collaboration of different art forms. The term embodies creative thinking and critique, which encompasses the analyses of contemporary visual culture alongside other art forms i.e. visual art, literature, music, theatre, film, dance, etc. Cultural arts help to explain the world in which we live, worldview and often challenge current ideas, thoughts and practice. In general, cultural arts are multidisciplinary, interdisciplinary and cross-genre. Cultural arts are less about definition and more about meaning and making sense of our current environment through an exploration of creativity. Sometimes known as multificational-cultural arts.
  • http://www.2fwww.articles.howto-tips.com/key-subject/attorney Attorney | Articles@HowTo - A person, typically a lawyer, appointed to act for another in business or legal matters.
  • http://www.2fwww.articles.howto-tips.com/key-subject/classes Classes | Articles@HowTo - A system of ordering society whereby people are divided into sets based on perceived social or economic status. A set or category of things having some property or attribute in common and differentiated from others by kind, type, or quality A Group of people for learning something
  • http://www.2fwww.articles.howto-tips.com/key-subject/conference-call Conference Call | Articles@HowTo - A conference call is a telephone call in which the calling party wishes to have more than one called party listen in to the audio portion of the call. The conference calls may be designed to allow the called party to participate during the call, or the call may be set up so that the called party merely listens into the call and cannot speak. It is sometimes called ATC (Audio Tele-Conference).
  • http://www.2fwww.articles.howto-tips.com/key-subject/cord-blood Cord Blood | Articles@HowTo - Cord blood is a sample of blood taken from a newborn baby's umbilical cord. It is a rich source of hematopoietic stem cells, which are precursors to blood cells. As such, they have been used to treat certain diseases of the blood and immune system. The next largest group is inherited diseases (of red blood cells, the immune system and certain metabolic abnormalities.) Patients with lymphoma, myelodysplasia and severe aplastic anemia have also been successfully transplanted with cord blood.
  • http://www.2fwww.articles.howto-tips.com/key-subject/credit Credit | Articles@HowTo - Credit (from Latin credere translation. "to believe") is the trust which allows one party to provide money or resources to another party where that second party does not reimburse the first party immediately (thereby generating a debt), but instead arranges either to repay or return those resources (or other materials of equal value) at a later date. The resources provided may be financial (e.g. granting a loan), or they may consist of goods or services (e.g. consumer credit). Credit encompasses any form of deferred payment.[2] Credit is extended by a creditor, also known as a lender, to a debtor, also known as a borrower.
  • http://www.2fwww.articles.howto-tips.com/key-subject/donate Donate | Articles@HowTo - A donation is a gift given by physical or legal persons, typically for charitable purposes and/or to benefit a cause. A donation may take various forms, including cashoffering, services, new or used goods including clothing, toys, food, and vehicles. It also may consist of emergency, relief or humanitarian aid items, development aid support, and can also relate to medical care needs as i.e. blood or organs for transplant. Charitable gifts of goods or services are also called gifts in kind.
  • http://www.2fwww.articles.howto-tips.com/key-subject/electricity Electricity | Articles@HowTo - Electricity is the set of physical phenomena associated with the presence and flow of electric charge. Electricity gives a wide variety of well-known effects, such as lightning,static electricity, electromagnetic induction and electrical current. In addition, electricity permits the creation and reception of electromagnetic radiation such as radio waves. In electricity, charges produce electromagnetic fields which act on other charges. Electricity occurs due to several types of physics:
  • http://www.2fwww.articles.howto-tips.com/key-subject/gas Gas | Articles@HowTo - Gas is one of the four fundamental states of matter (the others being solid, liquid, and plasma). A pure gas may be made up of individual atoms (e.g. a noble gas like neon),elemental molecules made from one type of atom (e.g. oxygen), or compound molecules made from a variety of atoms (e.g. carbon dioxide). A gas mixture would contain a variety of pure gases much like the air. What distinguishes a gas from liquids and solids is the vast separation of the individual gas particles. This separation usually makes a colorless gas invisible to the human observer. The interaction of gas particles in the presence of electric and gravitational fields are considered negligible as indicated by the constant velocity vectors in the image. One type of commonly known gas is steam.
  • http://www.2fwww.articles.howto-tips.com/key-subject/insurance Insurance | Articles@HowTo - Insurance is the equitable transfer of the risk of a loss, from one entity to another in exchange for payment. It is a form of risk management primarily used to hedge against the risk of a contingent, uncertain loss. An insurer, or insurance carrier, is selling the insurance; the insured, or policyholder, is the person or entity buying the insurance policy. The amount of money to be charged for a certain amount of insurance coverage is called the premium. Risk management, the practice of appraising and controlling risk, has evolved as a discrete field of study and practice.

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