邻近非主干血管蒂皮瓣移位修复足跟部皮肤缺损

目的探讨足跟部皮肤缺损皮瓣修复的优化选择及临床效果. 方法 2000年2月～2004年4月,应用4种邻近非主干血管蒂皮瓣移位修复足跟部皮肤缺损30例,其中男19例,女11例,年龄8～65岁.致伤原因:车轮绞伤19例,重物压伤5例,电锯伤3例,骨髓炎2例,足跟部鳞状细胞癌1例.皮肤缺损6.0 cm×5.5 cm～16.5 cm×11.0 cm者14例,均合并足后跟或足底皮肤缺损,采用腓肠神经营养血管远端蒂皮瓣及隐神经营养血管远端蒂皮瓣修复,皮瓣切取范围6.0 cm×5.0 cm～18.0 cm×12.0 cm;皮肤缺损2.5 cm×2.0 cm～5.5 cm×4.5 cm者16例,采用足外侧皮瓣及足底内侧皮瓣修复,皮瓣切取范围4.0 cm×3.0 cm～8.0 cm×7.0 cm.供区采用全厚或中厚皮片移植覆盖. 结果术后皮瓣均成活.获随访6～12个月,皮瓣外观良好,无破溃,2例出现胼胝.皮瓣痛觉或触觉部分或完全恢复,两点辨别觉恢复至1.0～3.2 cm.供区外观恢复良好. 结论采用邻近非主干血管蒂皮瓣移位修复足跟部皮肤缺损,具有切取简便、损伤少、不影响患肢血供、可选择性高和可操作性强等优点,是足跟皮肤缺损修复的一种较好选择.     

湿性皮肤再生技术在皮肤擦伤的应用

目的:探导湿性皮肤再生技术治疗皮肤擦伤的疗效。方法:自2000年1月-2005年10月,治疗头面部、躯干和四肢急性皮肤擦伤共353例,其中采用湿润烧伤膏和暴露疗法治疗(新法组)185例,按传统疗法清创治疗(传统组)168例。结果:新法组7天内痊愈116例,占62．7％;14天内痊愈59例,占3713％;总有效率100％。传统组7天内痊愈82例,占48．8％;14天内痊愈58例,占34．5％;另外28例,占16．7％,发生不同程度的创面感染,痂下积脓,需作再次清创,碘伏湿敷或改用MEBO治疗,创面延期愈合,愈后瘢痕增生明显。结论:湿润烧伤膏和暴露疗法治疗皮肤擦伤与传统疗法比较,具有缩短创面愈合时间,愈后不留瘢痕等优点。     

利用皮片移植及皮瓣转移修复会阴部烧伤后瘢痕挛缩畸形

目的:探讨修复烧伤后会阴部瘢痕挛缩畸形的手术方法。方法:对1990年以来收治的38例会阴部烧伤后瘢痕挛缩畸形患者行瘢痕切除松解,21例患者单纯中厚或全厚植皮,4例患者单纯局部皮瓣转移修复,13例患者皮瓣转移配合植皮修复。结果:1例皮瓣尖端2cm坏死,2例部分皮瓣色暗紫,2例植皮部分成活欠佳,经换药及对症处理痊愈,余均疗效满意。结论:皮片移植及皮瓣转移为治疗会阴部瘢痕挛缩畸形的较好手术方法。     

Monitoring of skin response to sodium lauryl sulphate: clinical scores versus bioengineering methods

The present trial was designed to evaluate clinical scores (single observer) of sodium lauryl sulphate (SLS)-induced skin irritation in a group of subjects (n = 10) over a 10-day period along with various skin function parameters. In order to avoid significant variations due to secondary phenomena, the following parameters were recorded with non-invasive instruments in this order: skin capacitance (C1; arbitrary units; CM420 Corneometer), transepidermal water loss (TEWL; g/m2.h; Evaporimeter) and laser Doppler flowmetry (CBFV: cutaneous blood flow values; Periflux). All examinations were performed during winter on reclined relaxed subjects present for at least 10 min in a test room with controlled temperature and relative humidity (t degrees: 19.5-20.7 degrees C and RH: 47.3-60.3%). The analysis of differential data (delta = value at tx-value before test; 2-way ANOVA) was made on single parameters as a function of site (volar forearm versus neck) and time (from 24 h after 48-h occlusion with 5% SLS up to 10 days later). The profile of erythema scores over time differed between neck and forearm, but the delta CBFV readings with the laser Doppler instrument did not detect significant site-time interactions. Roughness (blind evaluation with palpating finger) and capacitance readings (delta C1) showed significant differences between sites, but the profile over time was similar in both locations. delta TEWL did not differ according to anatomical location. The reason for different erythema scores on neck and forearm might be related to inherent regional variation of optical properties of the skin or to a substantial contribution of SLS-induced roughness to the readings of erythema.(ABSTRACT TRUNCATED AT 250 WORDS)     

Human sympathetic nerve activity to glabrous skin does not increase during simulated diving

In humans, cardiovascular adjustment to simulated diving causes a marked increase in sympathetic outflow to intramuscular vessels and muscle vasoconstriction. Skin vasoconstriction in the hand also occurs during diving in humans. Skin nerve sympathetic activity (SSA), containing vasoconstrictor signals to glabrous skin, unexpectedly was reduced during diving in a previous study of SSA recorded in the peroneal nerve. SSA was recorded by microneurography in the median nerve in 13 healthy volunteers during simulated diving. Skin blood flow in the hand and one finger was monitored. The typical SSA response, irrespective of duration of diving and water temperature, was an increase during the control period immediately prior to immersion of the face and a sudden reduction of SSA when the face was immersed. The increase in SSA preceding the dive was accompanied by vasoconstriction, which continued during the dive, but re-dilation regularly occurred before the end of the dive. Inhibition of SSA was not total. Mental arithmetic during diving evoked strong bursts of SSA, similar to those seen normally during mental stress. It is concluded that the true response of SSA to simulated diving is an inhibition of the immediately preceding outflow, in agreement with observations of cutaneous blood flow in animals. The skin vasoconstriction recorded during simulated diving is a consequence of an SSA increase before the procedure, suggested to be a stress response before the forthcoming manoeuvre. The SSA response during simulated diving is the opposite to that of sympathetic outflow to muscle, which emphasizes the diversity of sympathetic regulation of different organ systems.     

Experimental chronic dermatophytosis in human skin grafted to nude mouse: inoculation of Trichophytons and histopathological evaluation

Two strains of T. rubrum and one strain of T. mentagrophytes were inoculated into human skin grafted onto BALB/c nude mice by the needle puncture method. Infection was established in 1 of the 10 animals inoculated with fluffy colony type T. rubrum, 2 of the 10 animals inoculated with powdery colony type T. rubrum, and 7 of the 10 animals inoculated with granular colony type T. mentagrophytes, suggesting that the skin grafts are infectible by anthropophilic and zoophilic strains of dermatophytes. T. rubrum infection continued for a maximum of 9 weeks and T. mentagrophytes infection for more than 11 weeks. In the animals inoculated with T. mentagrophytes, fungal elements were localized in the stratum corneum of the human skin grafts. In the acute stage, microabscesses consisting of neutrophils were observed under the stratum corneum in contact with fungal elements; in the chronic stage, epidermal thickening and infiltration, mainly consisting of histiocytes and a smaller number of lymphocytes, was noted in the upper and middle dermis. Ultrastructural findings from the parasites were similar to those of dermatophytosis in man. This experimental system should be useful as a model of chronic dermatophyte infection in the human skin.     

Clinical History, Skin Prick Test and RAST in the Diagnosis of Birch and Timothy Pollinosis

The diagnostic efficacy of clinical history (CH), skin prick test (SPT) and RAST was estimated in relation to nasal and conjunctival provocation tests (NPT, CPT) in 69 patients with seasonal rhinoconjunctivitis. The extracts used were freeze-dried, and biologically standardized birch and timothy allergen preparations matched to the extracts on Phadebas RAST discs. Based on single determinations the sensitivity, specificity and predictive values were calculated. There were highly significant (P less than 0.001) correlations between all parameters: NPT, CPT, CH, SPT and RAST. For birch the combination of SPT and RAST made the PTs superfluous as both sensitivity and specificity then reached 100%. With timothy the sensitivity was 97% and with the addition of CH 100%. However, the specificity was only 79% through combining CH, SPT and RAST. The present study using the same standardized allergen preparation in all tests showed a good correlation between indirect test results and provocation tests.     

带血管蒂足内侧皮瓣修复足后踝皮肤缺损

目的 报告采用带血管蒂足内侧皮瓣修复踝后侧皮肤缺损的结果。方法 在解剖研究的基础上,根据缺损大小沿足内侧轴线设计皮瓣,首先解剖足底内侧血管神经束,再游离深支的内侧支及伴行静脉,沿舟状骨骨膜及胫后肌腱浅层切取皮瓣。结果 11例皮瓣全部成活,皮瓣面积6cm×6cm-7cm×9cm,随访2-4年,外形及功能恢复满意。结论 带血管蒂足内侧皮瓣薄而柔软,特别适用于修复踝关节后侧的皮肤缺损。     

严重烧伤混合植皮后异体真皮染色体核型分析

两例严重烧伤女病人，在切痂术和覆盖大张打洞异性异体皮嵌植自体皮１０９ｄ和５０７ｄ后，对所取移植皮片中的异体真皮进行了体外成纤维细胞的培养和染色体核型分折，在染色体标本中，均找到了ＸＹ性染色体的细胞。表明：移植皮片中仍存有供体来源的细胞．结果提示异体真皮的长期存在，并不是全身性因素影响的结果，可能是被嵌入的自体皮岛所具有的一种局部保护性机制。     

Food allergy and non-allergic food hypersensitivity in children and adolescents

BACKGROUND: Previous studies have shown a 10-fold discrepancy of self-reported food-induced symptoms and physician-diagnosed food hypersensitivity. Little information is available on the prevalence of food hypersensitivity in unselected paediatric populations. No data were available for German children. OBJECTIVE: To study the perception of food-induced symptoms in the paediatric population, to investigate the allergens accused, to objectify patients' reports, and to identify subgroups at risk of having food-induced allergy (FA) or non-allergic food hypersensitivity (NAFH) reactions. METHODS: This paper presents the data of the paediatric group (0-17 years) of a representative, randomly sampled, cross-sectional population-based survey studying 13 300 inhabitants of the German capital city Berlin regarding food-related symptoms. Instruments included mailed questionnaires, structured telephone interviews, physical examination, skin-prick tests, specific serum IgE and standardized, controlled and blinded oral food challenges. RESULTS: Two thousand three hundred and fifty-four individuals were contacted by mailed questionnaire, 739 (31.4%) responses could be fully evaluated. Four hundred and fifty-five (61.5%) participants reported symptoms related to food ingestion, 284 (38.4%) affirmed reproducible symptoms in the standardized telephone interview. One hundred and eighty-four (24.8%) individuals were fully examined. Reproducible symptoms to food were found in 31 (4.2%) children and adolescents: 26 (3.5%) showed symptoms of FA and five (0.7%) of NAFH. The oral allergy syndrome was most often observed. Foods most commonly identified by oral challenges were apple, hazelnut, soy, kiwi, carrot and wheat. CONCLUSION: The perception of food-related symptoms is common among children and adolescents from the general population. Self-reports could be confirmed in around one out of 10 individuals, still resulting in 4.2% of proven clinical symptoms. However, most reactions were mild and mainly because of pollen-associated FA, while NAFH reactions were less common. Severe IgE-mediated FA was observed in individuals with pre-existing atopic disease, who should be fully investigated for clinically relevant FA.