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Efficacy of 1% 4-ethoxybenzaldehyde in reducing facial erythema.

BACKGROUND: Facial erythema is a common postsurgical and dermatologic problem. It is commonly the result of dermal inflammation arising from either a facial surgical procedure, such as laser resurfacing, dermabrasion, or a face peel, or from an underlying dermatologic condition, such as rosacea. Facial erythema is difficult for the dermatologist to treat in both settings because topical corticosteroids cannot be used long term on the thin facial skin and anti-inflammatory oral or topical antibiotics have associated side effects. OBJECTIVE: The goal of this pilot study was to evaluate the anti-inflammatory effect of 1% 4-ethoxybenzaldehyde in a rosacea model of facial erythema. METHODS: Thirty subjects with mild to moderate stable rosacea were enrolled in this 4-week, double-blind, vehicle-controlled study. Photographs, investigator assessment, and subject assessment were the efficacy criteria. RESULTS: There was a statistically significant reduction in facial erythema (p<.01) in those subjects who used the active for 4 weeks, as well as a statistically significant improvement in uneven skin tone (p<.01) and the overall severity of the disease (p<.01). There was no statistically significant difference in any of these three indices in the vehicle-treated group. CONCLUSION: The results suggest that benzaldehyde-derived anti-inflammatory agents may be useful in reducing facial erythema in a rosacea model.

Administration, Topical↗

Use of macrolides and tetracyclines for chronic inflammatory diseases.

OBJECTIVE: To review the efficacy of macrolides and tetracyclines in several chronic inflammatory conditions. DATA SOURCES: Searches of MEDLINE (1966-March 2004) and an extensive bibliography search were undertaken. Key terms included acne, blepharitis, cardiovascular disease, cystic fibrosis, periodontitis, rosacea, and rheumatoid arthritis. STUDY SELECTION AND DATA EXTRACTION: Data were obtained primarily from randomized placebo-controlled trials upon which key recommendations are based. DATA SYNTHESIS: Antibiotics are often prescribed for months or even years for treatment of chronic inflammatory conditions such as acne, blepharitis, cardiovascular disease, cystic fibrosis, periodontitis, rosacea, and rheumatoid arthritis. Randomized controlled trials have shown that azithromycin is useful in the management of cystic fibrosis and the tetracyclines are beneficial in the management of rheumatoid arthritis, acne, blepharitis, and periodontitis. Several large, randomized controlled trials have failed to show any benefit of macrolides in the secondary prevention of cardiovascular disease. No randomized placebo-controlled clinical trials have been performed to assess the efficacy of macrolides or tetracyclines in patients with rosacea. CONCLUSIONS: The use of tetracyclines and macrolides for rosacea is based primarily on anecdotal reports or open-label trials. Limited clinical trials support the use of tetracyclines or macrolides in acne, blepharitis, periodontitis, rheumatoid arthritis, and cystic fibrosis. Trials to date do not support the use of antibiotics for secondary prevention of cardiovascular disease.

Acne Vulgaris↗

Perioral dermatitis: an uncommon condition?

To document the persistence of perioral dermatitis at dermatology clinics at University Hospital, Saskatoon, we reviewed the charts of all patients with the condition seen between January 1983 and March 1985. Patients with rosacea referred to the clinics during the same period were used as a comparison group. A total of 80 patients with perioral dermatitis and 117 patients with rosacea were seen during the study period; most were female. Those with perioral dermatitis were significantly younger and had a significantly shorter mean duration of the eruption before presentation than those with rosacea (p less than 0.001). The distribution of the lesions was different in the two groups. Sixty-eight (85%) of the patients with perioral dermatitis and 45 (38%) of those with rosacea had used topical corticosteroids, a postulated risk factor for perioral dermatitis; the use of potent topical corticosteroids was frequent in both groups. Despite continuing medical education on the dangers of chronic use of these agents for eruptions on the face, physicians continue to prescribe them.

Adrenal Cortex Hormones↗

In vivo transillumination biomicroscopy and photography of meibomian gland dysfunction. A clinical study.

Meibomian gland transillumination biomicroscopy and infrared photography were performed on 18 patients with clinically evident meibomian gland dysfunction (MGD) and dermatologic rosacea, 22 patients having MGD without evidence of dermatologic rosacea, and 15 unaffected individuals who served as controls. All patients having clinical signs of MGD demonstrated morphologic abnormalities of their meibomian glands by transilluminated biomicroscopy. Patients without dermatologic rosacea were noted to have varying degrees of gland distortion. Moreover, infrared photography documented a loss of the normal grape-like clusters of dark spots that represent the gland, suggesting a loss of glandular acini. Patients with dermatologic rosacea had more severe alterations, including marked distortion and loss of normal gland anatomy. There were no such abnormalities in clinically unaffected individuals. These data demonstrate that transilluminated biomicroscopy and infrared photography have the ability to identify a spectrum of morphologic alterations of the meibomian glands in MGD patients. The authors suggest that these techniques could be used to classify clinical MGD based upon the presence or absence of identifiable meibomian gland abnormalities.

Eyelid Diseases↗

Patterns of reactivity to lipid transfer proteins of plant foods and Artemisia pollen: an in vivo study.

BACKGROUND: Lipid transfer proteins (LTPs) are major allergens of Rosaceae fruits in the Mediterranean area. IgE-cross-reactivity has been demonstrated in vitro among LTPs from peach, apple, chestnut and Artemisia pollen. The aim of this study was to evaluate the reactivity to LTPs from peach, apple, chestnut and Artemisia pollen by means of skin prick tests (SPTs). METHODS: Forty-seven patients allergic to peach (peach group), 20 patients sensitized to Artemisia pollen with no food allergies (Artemisia group), and 12 control subjects were skin tested with fresh peach, as well as with whole extracts and purified LTPs of peach, apple, chestnut and Artemisia pollen. RESULTS: The rates of positive SPTs for peach, apple, chestnut and Artemisia LTPs were, respectively, 91, 77, 23, and 36% in the peach group, and 30, 5, 15 and 40% in the Artemisia group. No response was observed in the control subjects. SPTs with peach LTP strongly correlated with SPTs conducted with fresh peach. In the peach group, the most frequent pattern of reactivity to LTPs was the combination peach-apple (45%), followed by peach-apple-Artemisia-chestnut (21%). Significant correlations were found between peach and apple LTPs, and between Artemisia and chestnut LTPs. Positive SPTs to chestnut LTP were only observed in patients with positive SPTs to Artemisia LTP. All the patients with positive case histories to chestnut reacted to chestnut LTP. CONCLUSIONS: LTPs are plant panallergens with different patterns of cross-reactivity. They are major allergens of Rosaceae fruits and seem to be involved in allergic reactions to unrelated foodstuffs such as chestnut, probably through sensitization to the cross-reactive Artemisia LTP. Rosaceae LTPs could be useful tools for in vivo diagnosis of Rosaceae fruit allergy.

Adult↗

The defH9-iaaM auxin-synthesizing gene increases plant fecundity and fruit production in strawberry and raspberry.

BACKGROUND: The DefH9-iaaM gene fusion which is expressed specifically in placenta/ovules and promotes auxin-synthesis confers parthenocarpic fruit development to eggplant, tomato and tobacco. Transgenic DefH9-iaaM eggplants and tomatoes show increased fruit production due mainly to an improved fruit set. However, the weight of the fruits is also frequently increased. RESULTS: DefH9-iaaM strawberry and raspberry plants grown under standard cultivation conditions show a significant increase in fruit number and size and fruit yield. In all three Rosaceae species tested, Fragaria vesca, Fragaria x ananassa and Rubus idaeus, DefH9-iaaM plants have an increased number of flowers per inflorescence and an increased number of inflorescences per plant. This results in an increased number of fruits per plant. Moreover, the weight and size of transgenic fruits was also increased. The increase in fruit yield was approximately 180% in cultivated strawberry, 140% in wild strawberry, and 100% in raspberry. The DefH9-iaaM gene is expressed in the flower buds of all three species. The total IAA (auxin) content of young flower buds of strawberry and raspberry expressing the DefH9-iaaM gene is increased in comparison to untransformed flower buds. The DefH9-iaaM gene promotes parthenocarpy in emasculated flowers of both strawberry and raspberry. CONCLUSIONS: The DefH9-iaaM gene is expressed and biologically active in Rosaceae. The DefH9-iaaM gene can be used, under cultivation conditions that allow pollination and fertilization, to increase fruit productivity significantly in Rosaceae species. The finding that the DefH9-iaaM auxin-synthesizing gene increases the number of inflorescences per plant and the number of flowers per inflorescence indicates that auxin plays a role in plant fecundity in these three perennial Rosaceae species.

Blotting, Southern↗

A lifetime of healthy skin: implications for women.

During her lifetime, a woman faces the possibility of seeking dermatological assistance for a myriad of conditions, including acne, rosacea, striae, photodamage, and skin cancers. It is important for clinicians and patients to be aware of the symptoms of these conditions as well as the most beneficial approaches for prevention, diagnosis, treatment, and management. The life expectancy of women has increased and predictions for the year 2050 estimate the average age at 81 years. This will place women at greater risk for dermatological problems, especially photodamage and skin cancer. In addition, various ethnic groups may manifest these conditions differently. Although acne is most prevalent among teenaged males, most can expect clearing by age 25. Females may continue to experience acne into the adult years, sometimes beyond the age of 40. Although it is not a life-threatening disease, acne may have psychosocial and quality-of-life consequences. Treatments for acne can be topical or systemic, and include retinoids, antibiotics, benzoyl peroxide, azelaic acid, and hormonal therapy. Rosacea is more common in women (especially during menopause) than in men. It is a chronic condition that can cause complications, including telangiectasia, conjunctivitis, and blepharitis. Although there is no cure, rosacea can be managed and controlled with medication. Topical antibiotics, such as metronidazole, and systemic antibiotics, such as tetracycline, clarithromycin, and doxycycline, are used to manage rosacea. Striae, or stretch marks, occur most frequently in pregnant women, adolescents experiencing growth spurts, weight lifters, and the obese. Although not a health threat, they can be psychologically distressing. There are not many treatment options for striae, but topical tretinoin and the pulsed dye laser offer promising results. Intrinsic, or normal, aging of the skin results from the process of chronological aging. Photodamage is skin damage caused by chronic exposure to ultraviolet (UV) light. It is the leading cause of extrinsic aging, or alterations of the skin due to environmental exposure. Estimates indicate that almost half of a person's UV exposure occurs by age 18. Photoaging causes numerous histologic, physiologic, and clinical changes; it also increases the risk for skin cancer. Photodamage can be prevented through the use of sun screens, protective clothing, and avoidance of the sun during peak intensity time. The only product approved by the FDA for the treatment of photodamage (fine wrinkles, mottled hyperpigmentation, and skin roughness), topical tretinoin emollient cream, may help prevent additional photoaging when it is used to treat existing photoaging. Other management options for photodamaged skin include alpha-hydroxy acids, antioxidants, antiandrogens, moisturizers, and exfoliants. In patients with excessive manifestations of photodamage, surgical management may be needed, including dermabrasion, chemical peels, soft tissue augmentation, laser resurfacing, botulism toxin, and Gortex threads. Clinicians must educate their patients about the most appropriate skin care regimen as well as approaches for preventing and treating common afflictions. In this way, women will have the best opportunity for having and maintaining healthy skin.

Acne Vulgaris↗

Induction of rosaceiform dermatitis during treatment of facial inflammatory dermatoses with tacrolimus ointment.

BACKGROUND: Tacrolimus ointment is increasingly used for anti-inflammatory treatment of sensitive areas such as the face, and recent observations indicate that the treatment is effective in steroid-aggravated rosacea and perioral dermatitis. We report on rosaceiform dermatitis as a complication of treatment with tacrolimus ointment. OBSERVATIONS: Six adult patients with inflammatory facial dermatoses were treated with tacrolimus ointment because of the ineffectiveness of standard treatments. Within 2 to 3 weeks of initially effective and well-tolerated treatment, 3 patients with a history of rosacea and 1 with a history of acne experienced sudden worsening with pustular rosaceiform lesions. Biopsy revealed an abundance of Demodex mites in 2 of these patients. In 1 patient with eyelid eczema, rosaceiform periocular dermatitis gradually appeared after 3 weeks of treatment. In 1 patient with atopic dermatitis, telangiectatic and papular rosacea insidiously appeared after 5 months of treatment. CONCLUSIONS: Our observations suggest that the spectrum of rosaceiform dermatitis as a complication of treatment with tacrolimus ointment is heterogeneous. A variety of factors, such as vasoactive properties of tacrolimus, proliferation of Demodex due to local immunosuppression, and the occlusive properties of the ointment, may be involved in the observed phenomena. Future studies are needed to identify individual risk factors.

Acne Vulgaris↗

Facial granulomatous diseases: a study of four cases tested for the presence of Mycobacterium tuberculosis DNA using nested polymerase chain reaction.

The histopathologic diagnosis of cutaneous tuberculosis (CTB) is often troublesome, because there are several other entities (tuberculids, demodicidosis, granulomatous rosacea, and acne agminata) that may display granulomatous inflammation with caseation necrosis. The current study describes four cases of granulomatous disease of the face. The final diagnosis (assessed on the basis of the clinical response to therapy) was CTB in three cases and granulomatous rosacea in one case. Histologically, epithelioid granulomas were a constant feature; in one case of CTB, they displayed a palisading (granuloma annulare-like) arrangement. Caseation necrosis was a prominent feature only in the case of granulomatous rosacea. Routinely processed biopsy specimens were evaluated with nested polymerase chain reaction (nPCR) for Mycobacterium tuberculosis (MBT) DNA. The correlation between nPCR results and clinical outcome was less than optimal; in fact, one case showed an excellent clinical response to the antituberculous drug therapy despite the absence of MBT DNA amplification. In granulomatous diseases of the face, the importance of evaluating not only nPCR but the overall clinicopathologic picture so as to avoid diagnostic misinterpretations is emphasized.

Adult↗

Regulation of MMP-9 activity in human tear fluid and corneal epithelial culture supernatant.

PURPOSE: To evaluate human corneal epithelial culture supernatant and tear fluid for the presence of activators and inhibitors of matrix metalloproteinase (MMP)-9, MMP-3, and tissue inhibitor of metalloproteinase (TIMP)-1, respectively, and to evaluate the effect of MMP-3 on the activation of MMP-9 in these specimens. METHODS: Unstimulated tear fluid was collected from patients with ocular rosacea and normal control subjects. Levels of MMP-9, MMP-3, and TIMP-1 were determined by enzyme-linked immunosorbent assay (ELISA) and/or immunoblot analysis. Supernatants from primary human corneal epithelial cultures and human tear fluid were incubated with MMP-3. Cultured epithelial cells and their supernatants were also treated with doxycycline before MMP-3 was added. Gelatin zymography was used to identify activated 82-kDa MMP-9. MMP-9 activity was assessed with a commercial MMP-9 activity assay system. RESULTS: MMP-9 and TIMP-1 were detected at significantly higher concentrations in rosacea-affected than in normal tear fluids. MMP-3 was detected exclusively in the tear fluid of patients with ocular rosacea who had corneal epithelial disease. Treatment of the supernatant and tear fluid with MMP-3 resulted in two bands with molecular weights of 92 kDa and 82 kDa, representing pro-MMP-9 and activated MMP-9, respectively. Doxycycline added to the conditioned media did not affect activation of MMP-9 by MMP-3. However, 24-hour treatment of corneal epithelial cultures with doxycycline resulted in a lower concentration and activity of MMP-9 in their supernatants. CONCLUSIONS: MMP-9 and TIMP-1 are produced by the human corneal epithelium and are present in tear fluid. MMP-3 alone is sufficient to activate MMP-9 on the ocular surface. Doxycycline does not directly inhibit this activation by MMP-3, but it decreases MMP-9 activity when added to corneal epithelial cultures.

Blotting, Western↗

Facial demodicosis.

A 24-year-old man presented with papulopustular, rosacea-like centro- facial lesions. Many Demodex mites were found in the affected area by microscopy of smears from pustules. This observation provides further evidence that demodicosis is a condition distinct from common rosacea. Considering clinical similarities of demodicosis, rosacea and some mycotic infections, direct examination to confirm the etiological agent is highly recommended prior to treatment.

Adult↗

A clinical overview of azelaic acid.

Azelaic acid (AzA) initially was released in a 20% cream formulation, which has been shown to be effective in the treatment of mild to moderate rosacea. Recently, a 15% gel formulation was developed that vastly improved the delivery of AzA and has been proven by multiple studies to be effective in the treatment of rosacea. We present studies that examine both of these formulations, first in comparison with their vehicles and then in contrast with other well-accepted topical treatments of rosacea, such as metronidazole cream and gel.

Administration, Cutaneous↗

A novel aqueous metronidazole 1% gel with hydrosolubilizing agents (HSA-3).

Rosacea is a common chronic dermatosis that often is characterized by the presence of facial erythema, visible blood vessels, papules, and pustules. Because the face is the predominant site of involvement, rosacea may cause serious psychologic trauma and can significantly affect the quality of life of individuals with the condition. The first topical therapy approved for rosacea by the US Food and Drug Administration was metronidazole for the treatment of inflammatory lesions and erythema. A stable aqueous gel formulation of 1% metronidazole has been developed with the novel combination of hydrosolubilizing agents. Metronidazole 1% gel is a clear gel that exhibits advantageous qualities. Some features of the new product include being highly spreadable, easy to use, cosmetically friendly, ultramild, nondrying, and moisturizing. Data are presented from a 21-day cumulative irritation study, an assessment of skin barrier function, an in vitro skin penetration study, an absorption following maximal topical exposure study, and a skin hydration study.

Administration, Cutaneous↗

The Nicomide Improvement in Clinical Outcomes Study (NICOS): results of an 8-week trial.

The Nicomide Improvement in Clinical Outcomes Study (NICOS) was an open-label, multicenter, prospective cohort study designed to assess the clinical utility of oral pharmacologic doses of nicotinamide and zinc in 198 patients with acne vulgaris and/or rosacea. The study's primary efficacy measures were patient global evaluation and patient evaluation of the percentage of reduction in inflammatory lesions after 4 and 8 weeks of treatment; overall patient satisfaction also was recorded. The study formulation consisted of nicotinamide 750 mg, zinc 25 mg, copper 1.5 mg, and folic acid 500 microg, marketed as Nicomide (Nic/Zn). Nic/Zn was designed to deliver adequate concentrations of nicotinamide and zinc to effectively treat inflammatory cutaneous conditions with a safety profile suitable for long-term administration. After a relatively short treatment period of 4 weeks, the number of patients enrolled in NICOS who reported improvement was significantly greater (P<.0001) than the number who reported either no change in or worsening of their condition. Of the patients studied, 79% reported their improvement in appearance as moderately better or much better, as measured by patient global evaluation, and 55% reported moderate (26%-50% reduction in lesions) or substantial (>50% reduction in lesions) improvement after 4 weeks of treatment (P<.0001). The percentage of patients who responded to therapy continued to increase through the 8 weeks of treatment. When comparing patients who received concomitant oral antibiotic therapy (51/198, 26%) with those who received Nic/Zn tablets as their only oral therapy (147/198, 74%), the percentage of patients who responded to treatment was not significantly different between treatment groups (P=. 13). This finding was particularly interesting given that most patients studied considered their condition to be of at least moderate severity (143/198, 72%). It appears that the addition of an oral antibiotic to a treatment regimen that includes Nic/Zn tablets may not be necessary because the combination did not significantly increase the percentage of patients responding. Nic/Zn tablets appear to be an effective oral therapy for the treatment of acne vulgaris and rosacea when used alone or with other topical therapies and should be considered a useful alternative approach to oral antibiotics for the treatment of acne vulgaris and rosacea.

Acne Vulgaris↗

[Nosologic position of demodicidosis in humans].

In 20 patients with rosacea and rosacea-like eruptions Demodex folliculorum mites were found in high numbers within lesional skin. In one patient Demodex folliculorum could be demonstrated in pits and burrows in the epidermis of the scalp. In other instances the mouth parts of the mites were closely related to the follicular epithelium. Recent parasitologic findings showed that in spite of their name (Demodex = "sebaceous worm") the mites derive their nutritive requirements from cellular proteins obtained by epithelial destruction. To clarify the pathogenetic significance of hair follicle mites in man as suggested by these histological findings as well as their known ability to form organisational centers of foreign body granulomas, further epidemiologic and immunologic studies are needed. Topical antiparasitic agents did not offer any therapeutic advantage over traditional preparations used for rosacea and seborrheic dermatitis.

Adolescent↗

[Carcinoid tumor with revealed by skin manifestation].

INTRODUCTION: Carcinoid tumours are often diagnosed late because a large quantity of vasoactive peptides must be accumulated to express the carcinoid syndrome. OBSERVATION: A 54-year-old male was seen for rosacea and intense episodes of vasomotor flush. The rosacea was associated with episodes of diarrhoea. The carcinoid tumour was diagnosed on the basis of raised levels of 5-hydroxyindol acetic acid. Radiology and surgery demonstrated liver, lymph node and mesenteric metastases of the primative carcinoid tumour which could not be located. Treatment combined chemotherapy (5-fluorouracil-streptozotocine) and a somatostatin analogue (octreotide). A good clinical response was obtained with a 1 year follow-up. COMMENTS: This case was discovered in misleading conditions since the rosacea overshadowed the other clinical manifestations of the carcinoid syndrome. Symptomatology resulted from the metastasic carcinoid tumour. Surgery should always be proposed. It is rarely very extensive but does allow reduction of tumour size. The role of medical treatment with a somatostatin analogue should be emphasized. This treatment can be combined with more classical chemotherapy (5-fluorouracil, streptozotocine).

Antineoplastic Combined Chemotherapy Protocols↗

Use of atp6 in fungal phylogenetics: an example from the boletales.

Complete nucleotide sequences have been determined for atp6 from Suillus luteus and cox3 from Suillus sinuspaulianus (Boletales, Hymenomycetes, Basidiomycota), which code for ATPase subunit 6 and cytochrome oxidase subunit 3, respectively. These sequences were used to design PCR primers for the amplification of partial atp6 and cox3 sequences from other members of the Boletales and outgroup taxa. In atp6 and cox3 from Russula rosacea, one of the outgroup taxa, we observed a number of in-frame TGA(trp) codons, which imply a Neurospora crassa-type mitochondrial code in R. rosacea and possibly in basidiomycetes in general. Interestingly, however, most basidiomycetes other than R. rosacea appear to strongly prefer the TGG(trp) codon, which is unusual, given the strong A + T bias in fungal mitochondrial genomes. Pairwise comparisons were performed between atp6 sequences from increasingly divergent fungal lineages, and results show that all three codon positions become saturated in substitutions after an estimated divergence time of approx 300 Ma. This means that atp6 is likely to provide phylogenetic resolution within fungal classes but not at higher taxonomic levels. Also, because of the strong A + T bias in fungal mitochondrial genomes, A/T transversions were found to be more common than any other type of substitution, resulting in transversions being about two to three times more common in most pairwise sequence comparisons. Finally, atp6 sequences were used to infer phylogenetic relationships between 27 taxa from the Boletales and 4 outgroup taxa. Analyses were performed (i) on nucleotide sequence data using parsimony (successive approximation) as well as maximum likelihood methods and (ii) on deduced amino acid sequences using distance methods based on empirical substitution probabilities. Results from the various analyses are largely concordant with each other as well as with prior analyses of partial mitochondrial large-subunit rDNA (mtLSU rDNA). Analysis of the combined atp6 and mtLSU rDNA sequences results in increased bootstrap support for several key branches. Relationships that have been resolved for the first time in the current analysis are discussed.

Adenosine Triphosphatases↗

Development of microsatellite markers in peach [ Prunus persica (L.) Batsch] and their use in genetic diversity analysis in peach and sweet cherry ( Prunus avium L.).

We report the sequence of 41 primer pairs of microsatellites from a CT-enriched genomic library of the peach cultivar 'Merrill O'Henry'. Ten microsatellite-containing clones had sequences similar to plant coding sequences in databases and could be used as markers for known functions. For microsatellites segregating at least in one of the two Prunus F(2) progenies analyzed, it was possible to demonstrate Mendelian inheritance. Microsatellite polymorphism was evaluated in 27 peach and 21 sweet cherry cultivars. All primer pairs gave PCR-amplification products on peach and 33 on cherry (80.5%). Six PCR-amplifications revealed several loci (14.6%) in peach and eight (19.5%) in sweet cherry. Among the 33 single-locus microsatellites amplified in peach and sweet cherry, 13 revealed polymorphism both in peach and cherry, 19 were polymorphic only on peach and one was polymorphic only on cherry. The number of alleles per locus ranged from 1 to 9 for peach and from 1 to 6 on sweet cherry with an average of 4.2 and 2.8 in peach and sweet cherry, respectively. Cross-species amplification was tested within the Prunus species: Prunus avium L. (sweet cherry and mazzard), Prunus cerasus L. (sour cherry), Prunus domestica L. (European plum), Prunus amygdalus Batsch. (almond), Prunus armeniaca L. (apricot), Prunus cerasifera Ehrh. (Myrobalan plum). Plants from other genera of the Rosaceae were also tested: Malus (apple) and Fragaria (strawberry), as well as species not belonging to the Rosaceae: Castanea (chestnut tree), Juglans (walnut tree) and Vitis (grapevine). Six microsatellites gave amplification on all the tested species. Among them, one had an amplified region homologous to sequences encoding a MADS-box protein in Malus x domestica. Twelve microsatellites (29.3%) were amplified in all the Rosaceae species tested and 31 (75.6%) were amplified in all the six Prunus species tested. Thirty three (80.5%), 18 (43.9%) and 13 (31.7%) gave amplification on chestnut tree, grapevine and walnut tree, respectively.

Journal Article↗