In recent years, the emergence of newly detected pathogens and the increase of drug resistant bacterial bring serious challenges for the diagnosis and treatment of infectious diseases. Tetracycline drugs are widely used in clinical practice, and the varieties of these drugs are constantly being updated. However, there is still a lack of guidance documents for the rational clinical application of tetracycline drugs in China. Meanwhile, some healthcare workers have doubts about their pharmaceutical characteristics, timing and methods of clinical application. In order to further standardize the clinical application of tetracycline drugs and provide professional evidence-based medicine suggestions for medical personnel in medical institutions, under the leadership of Hospital Infection Control Branch of Chinese Preventive Medicine Association and Clinical Pharmacology Branch of Chinese Pharmacological Society, experts from areas of infection, respiratory medicine, critical care medicine, emergency, infection control, pharmacy and other disciplines organized a consensus meeting and formulated multidisciplinary expert consensus on the rational use of tetracyclines commonly used in clinical practice. This expert consensus is based on the pharmaceutical characteristics of tetracyclines commonly used in China, the mechanism of action and drug resistance status of tetracyclines, combined with the infection site, pathogen characteristics and bacterial drug resistance. This expert consensus also pays attention to special populations and off-label drug use, and integrates domestic and foreign recommendations and the latest evidence-based medicine evidence, and 17 expert consensus opinions for clinical physicians, pharmacists, and other professionals in medical institutions to refer to were formed. In view of the particularity and complexity of infectious diseases and the individual differences of patients, in order to benefit patients, individualized anti-infection strategies should be implemented.
近年来随着新检出病原体的出现和细菌耐药性的增加，感染性疾病的诊断和治疗面临着严峻挑战。四环素类药物在临床应用广泛，药物品种也在不断更新，我国尚缺乏四环素类药物临床合理应用的指导性文件，部分医务人员对其药学特点和临床应用时机及用法存在疑惑。为进一步规范四环素类药物的临床应用，为各级医疗机构医务人员提供专业的循证医学建议，中华预防医学会医院感染控制分会和中国药理学会临床药理分会牵头，组织感染科、呼吸科、重症医学科、急诊科、感染控制中心、药学部等多个学科领域专家经过共识会议制订了临床常用四环素类药物合理应用多学科专家共识。本专家共识以国内常用的四环素类药物的药学特性为基础，以四环素类药物作用机制和耐药现状为依据，结合感染部位、病原体特点及细菌耐药性，关注特殊人群和超说明书用药，整合国内外指南推荐意见和最新循证医学证据，形成可供医疗机构临床医师、临床药师等专业人员参考的17条专家共识意见。鉴于感染性疾病的特殊性、复杂性及患者的个体差异性，为使患者获益，本专家共识形成的意见需实施个体化的抗感染策略。.

Acne is one of the most common disorders treated by dermatologists and other health care providers. While it most often affects adolescents, it is not uncommon in adults and can also be seen in children. This evidence-based guideline addresses important clinical questions that arise in its management. Issues from grading of acne to the topical and systemic management of the disease are reviewed. Suggestions on use are provided based on available evidence.

Phototherapy, classic systemic treatments (methotrexate, acitretin, and ciclosporin), and biologic agents (etanercept, infliximab, adalimumab, and ustekinumab) constitute a broad therapeutic arsenal that increases the likelihood of achieving control of severe and extensive disease in patients with psoriasis. Acitretin continues to be a very valuable tool in both monotherapy, in which it is combined with other systemic treatments (classic or biologic), and in sequential therapy. Thanks to its lack of a direct immunosuppressive effect and its ability to achieve a long-term response, acitretin has an important role in the treatment of psoriasis, although this has not always been acknowledged in relevant treatment guidelines. We present consensus guidelines for the use of acitretin in psoriasis drawn up by the Psoriasis Group of the Spanish Academy of Dermatology and Venereology. These guidelines provide a detailed account of acitretin, including pharmacological properties, indications and contraindications, adverse effects, and factors that should be taken into account to enhance the safe use of this drug. They also propose treatment strategies for use in routine clinical practice. The overall aim of these guidelines is to define the criteria for the use and management of acetretin in psoriasis.

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Pemphigus, a prototypical organ-specific human autoimmune disease, may be associated with other immunity-related disorders, viral infections, and different types of tumors. Coexistence with immune diseases is fairly frequent and, for some of them (eg, myasthenia gravis, Basedow\'s disease, rheumatoid arthritis, or lupus erythematosus), common pathogenic mechanisms can be considered. The association with viral infections (mainly herpesvirus infections) raises the question of whether the virus triggers the outbreak of the disease or simply complicates its clinical course. Neoplastic proliferations coexisting with pemphigus have a different histogenesis and the pathogenic link may vary according to the associated tumor (thymoma, lymphoma, carcinoma, or sarcoma). A subset of pemphigus-neoplasia association is represented by Anhalt\'s paraneoplastic pemphigus, with peculiar clinical, histologic, and immunologic features characterizing it. Coexistence of pemphigus with Kaposi\'s sarcoma, albeit not frequent, offers an intriguing speculative interest. The cornerstone of management in pemphigus is the combination of systemic corticosteroids and immunosuppressants. The conventional treatment used in most cases is based on oral administration of deflazacort and azathioprine. In selected cases, mycophenolate mofetil is preferred to azathioprine. Severe forms of pemphigus require intravenous pulse therapy with dexamethasone (or methylprednisolone) and cyclophosphamide. In the recent years, the use of high-dose intravenous immunoglobulin therapy has gained several consents. Rituximab, a monoclonal anti-CD 20 antibody, which affects both the humoral and cell-mediated responses, has proved to give a good clinical response, often paralleled by decrease of pathogenic autoantibodies. The combination with intravenous immunoglobulin offers the double advantage of better clinical results and a reduced incidence of infection. Interventional treatments, such as plasmapheresis and extracorporeal immunoadsorption, are aimed at patients with life-threatening forms of pemphigus and high levels of circulating autoantibodies, a circumstance where the medical therapy alone risks failing. Second-line treatments include gold salts (which we do not favor because of the acantholytic potential inherent in thiol structure) and the association of oral tetracyclines with nicotinamide, which is rather safe. Local treatments, supplementary to the systemic therapy, are aimed at preventing infections and stimulating reepithelialization of eroded areas. Innovative topical treatments are epidermal growth factor, nicotinamide gel, pimecrolimus, and a proteomics-derived desmoglein peptide. Pemphigus patients should be warned against over-indulging in unnecessary drug intake, prolonged exposure to ultraviolet rays, intense emotional stress, and too spiced or too hot foods. Cigarette smoking is not contraindicated in pemphigus patients because of the nicotine anti-acantholytic properties.

暂无摘要。

The aim of the present survey was to analyse the frequency and type of antibiotic prescriptions used in dental practice in Saudi Arabia, to assess the awareness of periodontal treatment need among dentists and specialists and to evaluate the distribution of dental specialties in Saudi Arabia. We distributed a questionnaire to 378 dentists including different specialists working in various major hospitals and dental departments. This same questionnaire was then redistributed, 3 years later, to 211 participants. Results from both surveys indicated that antibiotics were not always prescribed on a scientific basis. Cost was the most significant factor (p < 0.05). Interestingly, and although periodontal disease was included as one of the possible causes of infections, the penicillin group was shown to be the group of choice (p < 0.007) and was prescribed by 45% of all participants, metronidazole and tetracyclines followed and were the second most commonly prescribed antibiotics in both surveys (p < 0.05). It was further demonstrated that although the need for periodontics is present among patients and specialists, it is one of the least practised specialties (p < or = 0.008) along with oral surgery (p < or = 0.36).

Many cases of central nervous system (CNS) Whipple\'s disease are not diagnosed until postmortem. Few reviews of CNS Whipple\'s disease have delineated the frequencies of abnormalities on neurological examination, cerebrospinal fluid studies, neuroimaging, and intestinal biopsy studies. Guidelines for diagnosis and treatment have not been proposed. In this review we present 3 new cases of CNS Whipple\'s disease and summarize the literature to determine the frequencies of neurological signs and abnormalities on diagnostic testing. We propose guidelines for diagnostic screening, selection for biopsy, and treatment. Review of the 84 cases of CNS Whipple\'s disease (81 in the literature, 3 new) revealed that 80% of the patients had systemic signs. Cognitive changes were frequent (71%), and 47% with cognitive changes also had psychiatric signs. Oculomasticatory myorhythmia and oculo-facial-skeletal myorhythmia, pathognomic for CNS Whipple\'s disease, were present in 20% of patients, and were always accompanied by a supranuclear vertical gaze palsy. Tissue biopsy was a sensitive technique; 89% of those who had biopsies had positive biopsy results. Diagnosis and treatment of definite CNS Whipple\'s disease should be based on the presence of pathognomic signs (oculomasticatory myorhythmia or oculo-facial-skeletal myorhythmia) or positive biopsy or polymerase chain reaction results. Possible CNS Whipple\'s disease should be diagnosed in the setting of unexplained systemic symptoms and neurological signs (supranuclear vertical gaze palsy, rhythmic myoclonus, dementia with psychiatric symptoms, or hypothalamic manifestations). Those with possible CNS Whipple\'s disease should undergo small-bowel biopsy.