Report: The effects of topical pleurotus tuberregium (PT) aqueous extract on intraocular pressure in monkeys

Purpose In earlier experiments in Nigeria, aqueous extract of Pleurotus tuber-regium (PT) had been shown to lower intra ocular pressure (IOP) in a feline model. The aim of the current study was to determine whether PT had the same or a similar IOP-lowering effect in ocularly normal non-human primates. Methods Four monkeys were treated twice daily for 4 days with 2 x 20 μl drops of 50 mg/ml PT (pH = 4.3). The monkeys were sedated with 5–10 mg/kg ketamine HCl IM. PT was administered to the right eye and BSS to the left eye. Baseline IOP was measured just prior to beginning treatment, and on day 5 before treatment and then hourly for 3 hours, beginning 1 hour after treatment. SLEs were performed at baseline and on day 5 pre- and 3 hours post-treatment. Results There was no significant difference between IOP in treated vs control eyes in the protocol. There were no adverse effects or toxicity as seen by SLE. Conclusions The inability of the extract to lower IOP in monkeys, in contrast to ocular hypertensive cats in an earlier study, could be due to species differences or duration of treatment. Since no adverse effects were observed in the monkeys, further studies with varying durations and dosages are recommended.

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Discontinuation Due to Toxicity Limits Treatment Duration of BTK Inhibitors in Non-Hodgkin Lymphoma

Blood ◽

10.1182/blood-2021-151791 ◽

2021 ◽

Vol 138 (Supplement 1) ◽

pp. 4685-4685

Author(s):

Drew G Gerber ◽

Yichun Cao ◽

Jeffrey M. Switchenko ◽

Kelly Valla ◽

Jonathon B. Cohen

Keyword(s):

Adverse Effects ◽

Disease Progression ◽

Median Duration ◽

Gastrointestinal Toxicity ◽

Categorical Variables ◽

Duration Of Treatment ◽

Significant Difference ◽

Voluntary Choice ◽

Btk Inhibitors ◽

Novel Agent

Abstract Background: Although clinical trial data exist describing the adverse effects of Bruton's tyrosine kinase inhibitors (BTKi)s, the patient experience outside clinical trials, including differences among agents is less well-described. We evaluated the selection criteria, efficacy and toxicities related to the use of BTKi at our site. Methods: A retrospective patient chart review was used to collect data from patients treated with one or more BTKi. Demographics, prior therapies, duration of treatment, response to treatment, and incidence and severity of pre-determined toxicities of interest were collected for each patient. Descriptive statistics for each variable were reported. Association between variables of interest and the study cohort were examined using ANOVA for categorical variables and Pearson correlation coefficient for continuous variables. Survival and duration of treatment were estimated using the Kaplan-Meier method according to first novel agent. Survival analysis for each novel agent was conducted using Cox proportional hazards models and log-rank tests. Results: One hundred forty patients were included in this study, including 94 patients with CLL, 24 with MCL, and 22 with other NHL subtypes. One hundred thirteen patients received ibrutinib, while 17 patients received acalabrutinib (n=16) or zanubrutinib (n=1), which were combined in the statistical analysis. Of patients receiving ibrutinib, 69% reported at least one toxicity event during the duration of their treatment. Across all patients who received ibrutinib, 35 individuals did not report a toxicity, 48 individuals reported one toxicity, and 30 individuals reported two or more toxicities. Among the 78 patients who experienced at least one toxicity, 41 (52.5%) discontinued the medication due to these adverse effects, most commonly cytopenias (n=9), diarrhea (n=8), and fatigue (n=9). 57% of patients who reported diarrhea, 36% of patients who reported cytopenias, and 33% of patients who reported fatigue discontinued therapy due to that reported AE. In total, 60/113 patients receiving ibrutinib discontinued therapy, including 40 (66%) due to toxicity and 14 (23.3%) due to disease progression. The remaining patients discontinued therapy due to voluntary choice of new therapy or due to personal decision to stop treatment. Patients remained on ibrutinib therapy for a median duration of 40 months. 53% of patients taking zanabrutinib or acalabrutinib reported at least 1 toxicity, but only 11.7% of patients discontinued therapy for any reason. All patients who discontinued zanubrutinib/acalabrutinib therapy did so due to toxicity, with no patients ceasing therapy due to disease progression. Because only 2 of 17 patients discontinued zanubrutinib/acalabrutinib treatment, a raw median duration of treatment was calculated to be 5 months. 12.4% of patients taking ibrutinib experienced a gastrointestinal toxicity, whereas 5.9% of patients taking acalabrutinib/zanubrutinib experienced a gastrointestinal toxicity (Table 1). Additionally, 8% of individuals taking ibrutinib reported a musculoskeletal toxicity, while no acalabrutinib/zanubrutinib patients reported a musculoskeletal toxicity. There were no statistically significant differences in frequency of toxicities encountered, possibly due to study size. Other toxicities common to all analyzed BTK inhibitors included hematological, cardiovascular, and constitutional adverse effects with no significant difference between agents. Conclusions: We identified that >1/3 of individuals taking BTK inhibitors are stopping therapy prematurely due to toxicity related outcomes rather than due to disease progression. Our findings suggest that proactive identification and management of adverse effects could prolong therapy duration and provide better outcomes for patients. Strategies to personalize therapy selection to limit therapy discontinuation due to toxicity are needed as additional targeted agents are developed. Figure 1 Figure 1. Disclosures Valla: BeiGene: Speakers Bureau. Cohen: Janssen, Adaptive, Aptitude Health, BeiGene, Cellectar, Adicet, Loxo/Lilly, AStra ZenecaKite/Gilead: Consultancy; Genentech, Takeda, BMS/Celgene, BioInvent, LAM, Astra Zeneca, Novartis, Loxo/Lilly: Research Funding.

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Suicidal Ideation and Self-Determination in Institutionalized Elderly

Crisis ◽

10.1027//0227-5910.22.1.15 ◽

2001 ◽

Vol 22 (1) ◽

pp. 15-19 ◽

Cited By ~ 9

Author(s):

Andrée Fortin ◽

Sylvie Lapierre ◽

Jacques Baillargeon ◽

Réal Labelle ◽

Micheline Dubé ◽

...

Keyword(s):

Self Determination ◽

Current Debate ◽

Elderly Persons ◽

Rational Suicide ◽

Institutionalized Elderly ◽

Significant Difference ◽

Social Subscale ◽

Civil Status ◽

The Right ◽

Taking Action

The right to self-determination is central to the current debate on rational suicide in old age. The goal of this exploratory study was to assess the presence of self-determination in suicidal institutionalized elderly persons. Eleven elderly persons with serious suicidal ideations were matched according to age, sex, and civil status with 11 nonsuicidal persons. The results indicated that suicidal persons did not differ from nonsuicidal persons in level of self-determination. There was, however, a significant difference between groups on the social subscale. Suicidal elderly persons did not seem to take others into account when making a decision or taking action. The results are discussed from a suicide-prevention perspective.

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DeVega versus ring annuloplasty in severe functional tricuspid insufficiency and their impact on the right ventricle

The Egyptian Cardiothoracic Surgeon ◽

10.35810/ects.v1i4.89 ◽

2019 ◽

Vol 1 (4) ◽

pp. 133-139

Author(s):

Yasser Hamdy ◽

Mohammed Mahmoud Mostafa ◽

Ahmed Elminshawy

Keyword(s):

Right Ventricular ◽

Tricuspid Valve ◽

Tricuspid Regurgitation ◽

Early Postoperative Period ◽

Tricuspid Valve Repair ◽

Ring Annuloplasty ◽

Significant Difference ◽

Group A ◽

Group B ◽

The Right

Background: Functional tricuspid valve regurgitation secondary to left-sided valve disease is common. DeVega repair is simple, but residual regurgitation with subsequent impairment of the right ventricular function is a concern. This study aims to compare tricuspid valve repair using DeVega vs. ring annuloplasty and their impact on the right ventricle in the early postoperative period and after six months. Methods: This is a prospective cohort study of 51 patients with rheumatic heart disease who underwent tricuspid valve repair for secondary severe tricuspid regurgitation. Patients were divided into two groups: group A; DeVega repair (n=34) and group B; ring annuloplasty repair (n=17). Patients were assessed clinically and by echocardiography before discharge and after six months for the degree of tricuspid regurgitation, right ventricular diameter and tricuspid annular plane systolic excursion (TAPSE). Results: Preoperative echocardiographic assessment showed no difference in left ventricular end-systolic diameter, end-diastolic diameter, ejection fraction and right ventricular diameter, however; group A had significantly better preoperative right ventricular function measured by TAPSE (1.96 ± 0.27 vs1.75 ± 0.31 cm; p=0.02). Group B had significantly longer cardiopulmonary bypass time (127.65 ± 13.56 vs. 111.74 ± 18.74 minutes; p= 0.003) and ischemic time (99.06 ± 11.80 vs. 87.15 ± 16.01 minutes; p= 0.009). Pre-discharge, there was no statistically significant difference in the degree of tricuspid regurgitation, but the right ventricular diameter was significantly lower in group B (2.66 ± 0.41 and 2.40 ± 0.48 cm; p=0.049). After six months of follow up, the degree of tricuspid regurgitation (p= 0.029) and the right ventricular diameter were significantly lower in the ring annuloplasty group (2.56 ± 0.39 and 2.29 ± 0.44 cm; p=0.029). Although there was a statistically significant difference in preoperative TAPSE, this difference disappeared after six months. Conclusion: Both DeVega and ring annuloplasty techniques were effective in the early postoperative period, ring annuloplasty was associated with lesser residual regurgitation and better right ventricular remodeling in severe functional tricuspid regurgitation than DeVega procedure after 6-months of follow up.

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651. Comparative Analysis Between Bacterial And Fungal Malignant Otitis Externa

Open Forum Infectious Diseases ◽

10.1093/ofid/ofaa439.845 ◽

2020 ◽

Vol 7 (Supplement_1) ◽

pp. S383-S384

Author(s):

Fatma Hammami ◽

Makram Koubaa ◽

Amal Chakroun ◽

Fatma Smaoui ◽

Khaoula Rekik ◽

...

Keyword(s):

Otitis Externa ◽

Clinical Presentation ◽

The Elderly ◽

Causative Organism ◽

Diabetic Patients ◽

Duration Of Treatment ◽

Evolutionary Features ◽

Significant Difference ◽

Malignant Otitis Externa ◽

History Of

Abstract Background Malignant otitis externa is a fatal infection of the external ear and temporal bone. Pseudomonas aeruginosa is the most common causative organism, while fungi are a rare cause of malignant otitis externa. We aimed to compare the clinical, therapeutic and evolutionary features between bacterial and fungal malignant otitis externa. Methods We conducted a retrospective study including all patients hospitalized for malignant otitis externa in the infectious diseases department between 2000 and 2018. Results Overall, we encountered 82 cases of malignant otitis externa, among which there were 54 cases (65.9%) of bacterial malignant otitis externa (BMO) and 28 cases (34.1%) of fungal malignant otitis externa (FMO). The males were predominant among BMO cases (57.4% vs 50%; p=0.5). Patients with FMO were significantly older (70±9 years vs 61±10 years; p< 0.001) and had medical history of diabetes mellitus more frequently (96.4% vs 77.8%; p=0.03). The use of topical corticosteroids was significantly more reported among FMO cases (28.6% vs 5.6%; p=0.006). Otalgia (96.4% vs 81.5%), otorrhea (75% vs 66.7%) and cephalalgia (46.4% vs 42.6%) were the revealing symptoms among FMO and BMO, respectively, with no significant difference. Tenderness to palpation of the mastoid bone (64.3% vs 38.9%; p=0.02) and stenosis of the external auditory canal (92.9% vs 72.2%; p=0.02) were significantly more frequent among FMO cases. Complications were significantly more frequent among FMO cases (42.9% vs 9.3%; p< 0.001). Treatment duration was significantly longer among FMO cases (70[40-90] days vs 45[34-75] days; p=0.03). Conclusion Our study showed that FMO affected more frequently the elderly and diabetic patients, when compared with BMO. Regardless of the causative agent, the clinical presentation was similar. However, the outcome was poor among FMO cases with the occurrence of complications, requiring a longer duration of treatment. Disclosures All Authors: No reported disclosures

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POS0586 RHEUMATOID ARTHRITIS IS AN INFLAMMATORY DISEASE WITH A HIGH CARDIOVASCULAR RISK

Annals of the Rheumatic Diseases ◽

10.1136/annrheumdis-2021-eular.4080 ◽

2021 ◽

Vol 80 (Suppl 1) ◽

pp. 526.1-526

Author(s):

L. Nacef ◽

H. Riahi ◽

Y. Mabrouk ◽

H. Ferjani ◽

K. Maatallah ◽

...

Keyword(s):

Rheumatoid Arthritis ◽

Risk Factors ◽

Cardiovascular Risk ◽

Carotid Artery ◽

Internal Carotid ◽

Subclinical Atherosclerosis ◽

External Carotid ◽

Significant Difference ◽

The Mean ◽

The Right

Background:Hypertension, diabetes, and dyslipidemia are traditional risk factors of cardiac events. Carotid ultrasonography is an available way to detect subclinical atherosclerosis.Objectives:This study aimed to compare the intima-media thickness in RA patients based on their personal cardiovascular (CV) history of hypertension (hypertension), diabetes, and dyslipidemia.Methods:The present study is a prospective study conducted on Tunisian RA patients in the rheumatology department of Mohamed Kassab University Hospital (March and December 2020). The characteristics of the patients and those of the disease were collected.The high-resolution B-mode carotid US measured the IMT, according to American Society of Echocardiography guidelines. The carotid bulb below its bifurcation and the internal and external carotid arteries were evaluated bilaterally with grayscale, spectral, and color Doppler ultrasonography using proprietary software for carotid artery measurements. IMT was measured using the two inner layers of the common carotid artery, and an increased IMT was defined as ≥0.9 mm. A Framingham score was calculated to predict the cardiovascular risk at 10-year.Results:Forty-seven patients were collected, 78.7% of whom were women. The mean age was 52.5 ±11.06 [32-76]. The rheumatoid factor (RF) was positive in 57.8% of cases, and anti-citrullinated peptide antibodies (ACPA) were positive in 62.2% of cases. RA was erosive in 81.6% of cases. Hypertension (hypertension) was present in 14.9% of patients, diabetes in 12.8% of patients, and dyslipidemia in 12.8% of patients. Nine patients were active smokers. The mean IMT in the left common carotid (LCC) was 0.069 ±0.015, in the left internal carotid (LIC) was 0.069 ±0.015, in the left external carotid (LEC) was 0.060 ±0.023. The mean IMT was 0.068 ±0.01 in the right common carotid (RCC), 0.062 ±0.02 in the right internal carotid (RIC), and 0.060 ±0.016 in the right external carotid (REC). The IMT was significantly higher in the left common carotid (LCC) in patients with hypertension (p=0.025). There was no significant difference in the other ultrasound sites (LIC, LEC, RCC, RIC, and REC) according to the presence or absence of hypertension. The IMT was also significantly increased in patients with diabetes at LCC (p=0.017) and RIC (p=0.025). There was no significant difference in the IMT at different ultrasound sites between patients with and without dyslipidemia.Conclusion:Hypertension was significantly associated with the increase in IMT at the LCC level in RA patients. Diabetes had an impact on IMT in LCC and RIC. However, dyslipidemia did not affect the IMT at the different ultrasound sites.References:[1]S. Gunter and al. Arterial wave reflection and subclinical atherosclerosis in rheumatoid arthritis. Clinical and Experimental Rheumatology 2018; 36: Clinical E.xperimental.[2]Aslan and al. Assessment of local carotid stiffness in seronegative and seropositive rheumatoid arthritis. SCANDINAVIAN CARDIOVASCULAR JOURNAL, 2017.[3]Martin I. Wah-Suarez and al, Carotid ultrasound findings in rheumatoid arthritis and control subjects: A case-control study. Int J Rheum Dis. 2018;1–7.[4]Gobbic C and al. Marcadores subclínicos de aterosclerosis y factores de riesgo cardiovascular en artritis temprana. Subclinical markers of atherosclerosis and cardiovascular risk factors in early arthritis marcadores subclínicos de aterosclerose e fatores de risco cardiovascular na artrite precoce.Disclosure of Interests:None declared

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The Effect of Reflexology on Lactation in Women Who Had Cesarean Section: A Randomized Controlled Pilot Study

Complementary Medicine Research ◽

10.1159/000513924 ◽

2021 ◽

pp. 1-8

Author(s):

Sevde Aksu ◽

Pelin Palas Karaca

Keyword(s):

Pilot Study ◽

Cesarean Section ◽

Intervention Group ◽

Control Group ◽

Breast Pain ◽

Randomized Controlled ◽

Significant Difference ◽

The Right ◽

Documentation Tool ◽

And Control

Aim: The research was conducted as a randomized controlled pilot study to evaluate the effects of reflexology on lactation in mothers who delivered by cesarean section (CS). Methods: A single-blind randomized controlled experimental study was conducted with a total of 60 postpartum women in the reflexology application (n = 30) and control groups (n = 30). After the CS, the mothers in the control group were given approximately 3-h routine nursing care after recovering from the effects of anesthesia; the introductory information form was applied, and the Breastfeeding Charting System and Documentation Tool (LATCH) and visual analog scale (VAS) for the signs of the onset of lactation were implemented on the first and second days. Reflexology was applied to the women in the intervention group after an average of 3 h following the mother’s condition had become stable and she had recovered from the effects of anesthesia. Reflexology was applied a total of 20 min – 10 min for the right foot, 10 min for the left foot – twice a day with 8-h intervals on the first and second days after CS. After the last reflexology application, the LATCH and VAS for the signs of the onset of lactation were applied. Results: Of the women, 70% breastfed their babies within 60 min after delivery; 46.7% of the mothers received breastfeeding training and 81.7% needed support for breastfeeding after the CS. The LATCH breastfeeding scores of the women in the intervention group on both days were significantly higher compared to those of the women in the control group (p < 0.001). On the first day after the CS, apart from breast pain, there was no significant difference between the two groups in terms of breast heat and breast tension (p > 0.05). On the second day after the CS, apart from breast tension, there was no significant difference between the groups in terms of breast heat and breast pain (p < 0.05). In the study, women in the intervention group were found to have higher scores in terms of all three symptoms compared to the control group (p < 0.05). Conclusions: In the study, it was determined that LATCH scores and signs of the onset of breastfeeding increased in the mothers who received reflexology after CS.

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Sex-dependent liver cancer xenograft models for predicting clinical data in the evaluation of anticancer drugs

Laboratory Animal Research ◽

10.1186/s42826-021-00087-z ◽

2021 ◽

Vol 37 (1) ◽

Author(s):

Sungryong Oh ◽

Joohee Jung

Keyword(s):

Liver Cancer ◽

Adverse Effects ◽

Anticancer Drugs ◽

Clinical Data ◽

Xenograft Model ◽

In Vitro Test ◽

Incidence And Mortality ◽

Significant Difference ◽

Xenograft Models

Abstract Background The incidence and mortality of liver cancer show a great difference between the sexes. We established sex-dependent liver cancer xenograft models and investigated whether such sex-dependent models could be used to simultaneously evaluate the therapeutic and adverse effects of anticancer drugs for drug screening. Results In the in-vitro test, the cytotoxicity of anticancer drugs (cisplatin, 5-fluorouracil, and doxorubicin) was compared between male- and female-derived liver cancer cell lines. Cisplatin and 5-fluorouracil exhibited cytotoxicity without sex-difference, but doxorubicin showed dose-dependently significant cytotoxicity only in male-derived cells. Our results showed a strong correlation between preclinical and clinical data with the use of sex-dependent liver cancer xenograft models. Moreover, the male-derived Hep3B-derived xenograft model was more sensitive than the female-derived SNU-387-derived xenograft model against doxorubicin treatment. Doxorubicin showed more severe cardiotoxicity in the male xenograft model than in the female model. We investigated the occurrence frequency of doxorubicin-related cardiotoxicity using data obtained from the Korea Institute of Drug Safety & Risk Management Database, but no significant difference was observed between the sexes. Conclusions Our results suggest that sex-dependent xenograft models are useful tools for evaluating the therapeutic and adverse effects of anticancer drugs, because sex is an important consideration in drug development.

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Frequency-Following Response (FFR) in Military Pilots

International Archives of Otorhinolaryngology ◽

10.1055/s-0040-1718525 ◽

2020 ◽

Author(s):

Graziela Maria Martins-Moreira ◽

Alessandra Spada Durante

Keyword(s):

Pure Tone Audiometry ◽

Control Group ◽

Study Group ◽

Aircraft Accidents ◽

Frequency Following Response ◽

Significant Difference ◽

Qualitative Variables ◽

Chi Squared ◽

The Right ◽

Military Pilots

Abstract Introduction Good hearing in pilots, including central auditory skills, is critical for flight safety and the prevention of aircraft accidents. Pure tone audiometry alone may not be enough to assess hearing in the members of this population who, in addition to high noise levels, routinely face speech recognition tasks in non-ideal conditions. Objective To characterize the frequency-following response (FFR) of a group of military pilots compared with a control group. Methods Twenty military pilots in the Study Group and 20 non-pilot military personnel, not exposed to noise in their work, in the Control Group, all with normal hearing, aged between 30 and 40 years old, completed a questionnaire to assess their hearing habits, and their FFRs were measured with a /da/ syllable (duration 40 milliseconds, speed 10.9/s), at 80 dB NA in the right ear. All procedures were approved by the ethical committee of the institution. Statistical analysis was performed using the t-Student or Mann-Whitney tests for quantitative variables, and the Fisher or chi-squared tests for qualitative variables, and a value of p < 0.05 was considered to be statistically significant. Results There was no significant difference between the groups regarding auditory habits. In the FFR, wave amplitudes A (p = 0.01) and C (p = 0.04) were significantly lower in the Study Group. Conclusion Working as a military pilot can be a crucial factor in determining an individual's typical FFR pattern, demonstrated in the present study by statistically significant reductions in the amplitudes of the A and C waves.

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In vivo exploration of synaptic projections in frontotemporal dementia

Scientific Reports ◽

10.1038/s41598-021-95499-1 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Eric Salmon ◽

Mohamed Ali Bahri ◽

Alain Plenevaux ◽

Guillaume Becker ◽

Alain Seret ◽

...

Keyword(s):

Frontotemporal Dementia ◽

Input Function ◽

Parahippocampal Gyrus ◽

Exploratory Research ◽

Social Brain ◽

Synaptic Density ◽

Clinical Disorder ◽

Significant Difference ◽

The Right

AbstractThe purpose of this exploratory research is to provide data on synaptopathy in the behavioral variant of frontotemporal dementia (bvFTD). Twelve patients with probable bvFTD were compared to 12 control participants and 12 patients with Alzheimer’s disease (AD). Loss of synaptic projections was assessed with [18F]UCBH-PET. Total distribution volume was obtained with Logan method using carotid artery derived input function. Neuroimages were analyzed with SPM12. Verbal fluency, episodic memory and awareness of cognitive impairment were equally impaired in patients groups. Compared to controls, [18F]UCBH uptake tended to decrease in the right anterior parahippocampal gyrus of bvFTD patients. Loss of synaptic projections was observed in the right hippocampus of AD participants, but there was no significant difference in [18F]UCBH brain uptake between patients groups. Anosognosia for clinical disorder was correlated with synaptic density in the caudate nucleus and the anteromedial prefrontal cortex. This study suggests that synaptopathy in bvFTD targets the temporal social brain and self-referential processes.

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Different selective dry cow therapy concepts compared to blanket antibiotic dry cow treatment

Tierärztliche Praxis Ausgabe G Großtiere / Nutztiere ◽

10.15653/tpg-170208 ◽

2017 ◽

Vol 45 (06) ◽

pp. 343-349 ◽

Cited By ~ 1

Author(s):

Nicole Wente ◽

Jan-Hendrik Paduch ◽

Doris Klocke ◽

Elisabeth Mansion-de Vries ◽

Martina Hoedemaker ◽

...

Keyword(s):

Rapid Test ◽

Study Groups ◽

Test Methods ◽

Farm Animals ◽

Control Group ◽

Dry Period ◽

Udder Health ◽

Significant Difference ◽

Group A ◽

The Right

SummaryObjective: The aim of the study was to investigate the use of somatic cell count (SCC) and aerobic bacterial counts as possible tools to choose animals for selective dry cow treatment (DCT) on cow level. Blanket antibiotic DCT is an approved and common method in Germany aimed at increasing the cure rate of existing intramammary infections (IMI) at the time of drying off and decreasing the risk of new infections during the dry period. However, not all animals benefit equally from an antibiotic DCT. Moreover, dairies, consumers and politicians demand a reduction in the use of antibiotics in farm animals. Several criteria for identifying animals which would benefit from antibiotic DCT have been described in the literature. Material and methods: Animals chosen for this investigation were divided into three study groups: Aerobic Count Petrifilm® group A (153 cows), SCC group S (160 cows) and control group C (169 cows). All quarters were treated with an internal teat sealant (ITS) no matter which group the cows belonged to. Results: Group C, in which all cows received an antibiotic DCT, achieved the best results referred to udder health, particularly regarding bacteriological dry period cure. However, the results of the two study groups A and S, in which the animals were dried off selectively, were only marginally worse. A significant difference regarding bacterial dry period cure was revealed between group S and group C (p = 0.039), whereas no significant difference concerning new IMI risk could be detected between the three study groups. Compared to a blanket antibiotic DCT of all cows in the corresponding study group, a reduction of the usage of antibiotics of 23.5 % (A) and 55 % (S) was noticed, respectively. Furthermore, it could be shown that the lactation number as well as the microorganisms present at the time of drying off influence udder health. Conclusion: Selective DCT is an alternative method to the widespread blanket antibiotic DCT. However, it has to be mentioned that selective DCT involves the described marginal decline in udder health and the additional amount of time, which might arise from the procedure of choosing the right animals and performing the applied rapid test methods.

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